LPDES SECTION 316(B) SUBMITTAL

Teche Power Station

237 Newman Street

Baldwin, St. Mary Parish, Louisiana 70514

Agency Interest No. 2432

LPDES Permit # LA0002887

Project No. 126934.03

January 2009

Submitted for: 

Cleco Power, LLC 

2030 Donahue Ferry Rd 

P.O. Box 5000 

Pineville, Louisiana 

Submitted by: 

4171 Essen Lane 

Baton Rouge, LA 70809
Table of Contents ________________________________________________ 

1.0 INTRODUCTION ............................................................................................... 1-1 

1.1 Regulatory Applicability.................................................................................. 1-2 

1.2 ............................................................................................................. 1-2 Purpose

2.0 FACILITY DESCRIPTION ................................................................................ 2-1 

2.1 Facility Location .............................................................................................. 2-1 

2.2 Source Waterbody Description........................................................................ 2-1 

2.2.1 Physical Characteristics........................................................................... 2-1 

2.2.2 Water Quality........................................................................................... 2-1 

2.2.3 Existing Habitat ....................................................................................... 2-2 

2.2.4 Mean Annual Flow .................................................................................. 2-3 

2.3 Cooling Water Intake Structure Design........................................................... 2-3 

2.3.1 Unit 1& 2 CWIS ...................................................................................... 2-3 

2.3.2 Unit 3 CWIS ............................................................................................ 2-4 

2.4 Cooling Water System..................................................................................... 2-4 

2.5 Facility Capacity Utilization............................................................................ 2-4 

3.0 HISTORICAL INFORMATION......................................................................... 3-1 

3.1 Gulf South Research Institute Investigation (1970’s)...................................... 3-1 

3.2 LDWF Ichthyofauna Data Collection Program (1986 – 2004) .......................3-2 

3.3 Threatened, Endangered, and Other Aquatic Species of Concern...................3-3 

4.0

.................................................................. 4-1 

FISH/SHELLFISH IMPINGEMENT AND ENTRAINMENT 

CHARACTERIZATION STUDY REPORT

LPDES 316b submittal_final.doc January 2009 

i 
Table of Contents (Cont.) __________________________________________ 

List of Tables____________________________________________________ 

2-1 TPS Cooling Water Intake Design 

3-1 Taxa Collected by LDWF from 1986 - 2004 Northeast Point of Marsh Island, LA 

3-2 Taxa Collected by LDWF from 1986 – 2004 Stumpy Bayou, LA 

3-3 Taxa Collected by LDWF from 1988 – 2004 Lake Fausse Point, LA 

3-4 Threatened & Endangered Species and Species of Concern Listed in St. Mary 

Parish, LA 

List of Figures ___________________________________________________ 

2-1 Vicinity Map / Source Water & Surface Water System 

2-2 Charenton Canal Cross Section 

2-3 Water Balance Diagram 

2-4 Intake Units 1 & 2 Cooling Water Structure Plan & Sections 

2-5 Unit 3 Cooling Water Intake Structure Plan & Sections 

3-1 LDWF Sampling Stations 

3-2 Abundance (Individuals/Seine) of Anchoa mitchilli by Month for 2001 and 2003 

Station 419, Northeast Point of Marsh Island 

3-3 Abundance (Indivduals/Seine) of Micropogonias undulates by Month for 2001-

2003 Station 419, Northeast Point of Marsh Island 

3-4 Abundance (Individuals/Seine) of Farfantepenaeus aztecus by Month for 2001-

2003 Station 419, Northeast Point of Marsh Island 

3-5 Abundance (Individual/Seine) of Cynoscion arenarius by Month for 2001 and 

2003 Station 419, Northeast Point of Marsh Island 

3-6 Abundance (Individuals/Seine) of Litopenaeus setiferus by Month for 2001 and 

2003 Station 419, Northeast Point of Marsh Island 

3-7 Callinectes sapidus Abundance (Individuals/Seine) by Month 2001 Station 419 

Northeast Point of Marsh Island 

3-8 Abundance (Individuals/Seine) of Anchoa mitchilli by Month for 2001-2003 

Station 648, Stumpy Bayou 

3-9 Abundance (Individuals/Seine) of Micropogonia undulates by Month for 2001-

2003 Station 648, Stumpy Bayou 

3-10 Abundance (Individuals/Seine) of Brevoortia patronus by Month for 2001-2003 

Station 648, Stumpy Bayou 

3-11 Abundance (Individuals/Seine) of Palaemonetes spp. by Month for 2001-2003 

Station 648, Stumpy Bayou 

LPDES 316b submittal_final.doc January 2009 

ii 
Table of Contents (Cont.) __________________________________________ 

List of Figures (Cont.)_____________________________________________ 

3-12 Abundance (Individuals/Seine) of Mugil cephalus by Month for 2001-2003 

Station 648, Stumpy Bayou 

3-13 Total Catch (Numbers of Individuals) by Month for 2001-2003 Station 419, 

Northeast Point of Marsh Island 

3-14 Total Catch (Numbers of Individuals) by Month for 2001-2003 Station 648, 

Stumpy Bayou 

List of Attachments ______________________________________________ 

Attachment A Fish/Shellfish Impingement and Entrainment Characterization 

Study Report 

Attachment B Agency Data Requests/Responses 

LPDES 316b submittal_final.doc January 2009 

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LPDES 316b submittal_final.doc January 2009 

iv 

Table of Contents (Cont.) __________________________________________ 

List of Acronyms_________________________________________________ 

°C Degree Celsius 

o

F Degree Fahrenheit 

BTA Best Technology Available 

CFR Code of Federal Regulations 

cfs Cubic feet per second 

CWIS Cooling Water Intake System 

EPA Environmental Protection Agency 

ESA Endangered Species Act 

fps Feet per second 

gpm Gallons per minute 

g/L Grams per Liter 

GSRI Gulf States Research Institute 

IM&E Impingement Mortality and/or Entrainment 

LAC Louisiana Administrative Code 

LDEQ Louisiana Department of Environmental Quality 

LDWF Louisiana Department of Wildlife & Fisheries 

LPDES Louisiana Pollutant Discharge Elimination System 

mg/L Milligrams per Liter 

MGD Million gallons per day 

MW Megawatts 

NOAA National Oceanic & Atmospheric Administration 

PIC Proposal for Information Collection 

ppt Parts per thousand 

USACE U.S. Army Corps of Engineers 

USFWS U.S. Fish and Wildlife Service 

USGS U.S. Geological Survey 
1.0 INTRODUCTION 

Section 316(b) of the Clean Water Act requires that cooling water intake structures 

(CWIS) reflect the best technology available (BTA) for minimizing environmental 

impacts due to the impingement of fish and shellfish on intake structures and the 

entrainment of eggs and larvae through cooling water systems. The Environmental 

Protection Agency (EPA) published regulations applicable to existing electric generating 

facilities (Phase II facilities) in the Federal Register on July 9, 2004. These regulations, 

codified in the Code of Federal Regulations (CFR) Chapter 40 Part 125 Subpart J, 

became effective September 7, 2004. On January 25, 2007, the Second U.S. Circuit 

Court of Appeals remanded several provisions of the Phase II rule. On July 9, 2007, the 

EPA published a Federal Register notice suspending all parts of the Phase II regulations 

except 40 CFR 125.90(b) [Louisiana Administrative Code (LAC) 33:IX.4731.B]. 

CWIS of existing facilities are now regulated on a case-by-case basis using best 

professional judgment per LAC 33:IX.4731.B. The suspended Phase II regulations 

established performance standards for CWIS of existing electric generating facilities 

which withdraw more than 50 million gallons per day (MGD) of surface waters, more 

than 25 percent of which is used for cooling purposes. These performance standards 

required an 80 to 95 percent reduction in impingement mortality and a 60 to 90 percent 

reduction in entrainment. The waterbody type on which the facility is located, the 

facility’s capacity utilization rate, and the magnitude of the design intake flow relative to 

the waterbody flow determined whether a facility would be required to meet the 

performance standards for impingement mortality only, or both impingement mortality 

and entrainment (IM&E). The final rule allowed these performance standards to be met 

through a combination of technology improvements, operational measures, and/or 

restoration measures and provided an option for site-specific performance standards if 

economic conditions did not justify the full costs of meeting the standards. 

The suspended Phase II regulation required that each affected facility develop and submit 

a Proposal for Information Collection (PIC) to the applicable permitting agency prior to 

implementation of data collection activities. The PIC was to include: 

 A description of the proposed and/or implemented technologies, operational 

measures, and/or restoration measures that will be evaluated to aid in developing 

a compliance strategy to meet the performance standards 

 A list and description of any historical studies characterizing Impingement 

Mortality and Entrainment (IM&E) and/or the physical and biological conditions 

in the vicinity of the CWIS and their relevance to the proposed study 

 A summary of any past or ongoing consultations with regulatory agencies and 

other stakeholders that are relevant to the study 

 A sampling plan for any new field studies needed to estimate IM&E. 

A PIC was submitted to the Louisiana Department of Environmental Quality (LDEQ) for 

review and comment on April 6, 2006 in advance of implementing field studies. In a 

LPDES 316b submittal_final.doc January 2009 

1-1 
LPDES 316b submittal_final.doc January 2009 

1-2 

letter dated August 7, 2007, Cleco submitted responses to LDEQ comments related to the 

PIC. IM&E characterization studies in accordance with the PIC sampling plan were 

performed from June 2006 to May 2007 (Attachment A). 

1.1 REGULATORY APPLICABILITY

The Teche Power Station (Teche) is an existing steam electric generating station with a 

CWIS that withdraws greater than 50 MGD of surface water, more than 25 percent of 

which is used for cooling purposes. Therefore, the facility was subject to the 

requirements of the Phase II regulations prior to remand. The facility is located on the 

Charenton Canal, a tidally influenced body of water, and was subject to both IM&E 

performance standards. 

Teche currently operates under a Louisiana Pollutant Discharge Elimination System 

(LPDES) Permit No. LA0002887 issued by the LDEQ. The permit renewal was received 

on December 29, 2004 and became effective February 1, 2005. The permit was modified 

on January 7, 2008 to reflect the Second U.S. Circuit Court of Appeals ruling. The 

modified permit includes a schedule for initiating compliance with Section 316(b) Phase 

II rule requirements of the Clean Water Act and applicable State regulations. 

1.2 PURPOSE

The purpose of this document is to satisfy compliance requirements in accordance with 

the modified LPDES permit for the Teche Power Plant. The permit requires that the 

following information be submitted within four years from the original effective data of 

the LPDES permit: 

 Source water physical data 

 Cooling water intake structure data 

 Cooling water system data 

 Source water biological characterization data 

 IM&E characterization assessment 
2.0 FACILITY DESCRIPTION 

The Teche Power Station is owned and operated by Cleco Corporation. The facility 

consists of three steam electric generating units, with a total generation capacity of 477 

megawatts (MW). The following is a description of the facility and the source 

waterbody. A description of the design and operation of the CWIS and the rate of 

withdrawal of cooling water relative to the source waterbody is also included. 

2.1 FACILITY LOCATION

The Teche Facility is located in St. Mary Parish adjacent to the town of Baldwin, 

Louisiana at Latitude 29o

 49’ 21” N, Longitude 91o 32’ 35” W, as shown on Figure 2-1. 

All three units utilize once-through cooling water systems. Cooling water is withdrawn 

through CWIS located on the western banks of the Charenton Canal (Subsegment number 

060601). The cooling water discharge system for Units 1 and 2 is located approximately 

540 feet downstream of its CWIS and the cooling water discharge system for Unit 3 is 

located approximately 1,620 feet downstream of its CWIS (Figure 2-2). 

2.2 SOURCE WATERBODY DESCRIPTION

The Charenton Canal is located in the lower portion of the Vermilion-Teche River Basin 

as shown on Figure 2-1. This sub-segment is in a coastal area that is tidally influenced. 

Water in the Charenton Canal, during low flows, comes from Lake Fausse Pointe, the 

western portion of Bayou Teche and the eastern portion of Bayou Teche. Most of the 

flow in the eastern portion of Bayou Teche is water from the Atchafalaya basin that flows 

into the Wax Lake Outlet and then flows westward through the West Calumet floodgates 

toward the Charenton Canal. The Charenton Canal drains into West Cote Blanche Bay, 

which is connected to the Gulf of Mexico by East Cote Blanche Bay. During high flow 

conditions, water flows westward from the Atchafalaya River into the Gulf Intracoastal 

Waterway, which crosses the Charenton Canal. 

2.2.1 Physical Characteristics 

The Charenton Canal is approximately 220 feet wide in front of Units 1 and 2 CWIS and 

approximately 235 feet wide in front of Unit 3, with an average depth of approximately 

30 feet (Figure 2-2). Water levels in the canal range from El. – 13.5 inches at low water 

conditions to El. + 2.5 inches at high water conditions. 

2.2.2 Water Quality 

Conductivity data taken from June 1998 to December 1998 from the LDEQ water quality 

station 0674 on the Charenton Canal south of Baldwin, Louisiana corresponds to an 

average salinity of approximately 0.2 parts per thousand (ppt). This meets the definition 

LPDES 316b submittal_final.doc 2-1 January 2009 
for a tidal river or stream (salinity is less than or equal to 0.5 ppt). Conductivity data 

from two locations on the Charenton Canal obtained on September 19, 2000 was also 

available from FTN’s Synoptic Survey of the Mermentau/Vermilion-Teche Basins. This 

data corresponds to salinity concentrations of approximately 1 and 2 ppt and meets the 

definition for an estuary (salinity is greater than 0.5 ppt and typically less than 30 ppt). 

Therefore, the Charenton Canal in the vicinity of the Teche facility may be classified as 

either a tidal river or an estuary, based upon the relative influence of freshwater inflow 

and tide stage. 

Over a 12 month period (June 2006 – May 2007) water quality data was collected for the 

316b Phase II Impingement Mortality and Entrainment Characterization at the Unit 3 

CWIS: Mean DO concentration was 6.8 milligrams per liter (mg/L) (range 1.3 – 11.3 

mg/L), mean temperature was 73.0o

 Fahrenheit (oF) (range 48.3 – 92.1 oF), mean salinity 

was 0.19 grams per liter (g/L) (range 0.01 – 1.68 g/L), and mean pH was 7.78 (7.13 – 

9.34). The water quality data that was collected may be found in Table 9-1 in the 

Fish/Shellfish Impingement and Entrainment Characterization Study (Attachment A). 

2.2.3 Existing Habitat 

The Cleco Teche Power Station’s CWIS are located on the Charenton Drainage and 

Navigation Canal in the Vermilion-Teche River Basin, Baldwin, St. Mary Parish, 

Louisiana. There is one CWIS for Units 1 and 2 and one CWIS for Unit 3. The intake 

for Unit 3 consists of a sheet pile flume on the shoreline: a constructed intake bay is 

located between the screens and the canal. The front face of the plume has four openings 

located below normal water levels of the canal. Water intake for Units 1 and 2 is 

withdrawn from the canal through an inlet channel and gated structure approximately 500 

feet downstream of Unit 3. 

The following habitat characterization for the Charenton Canal applies to both CWIS 

given the proximity of the two structures and consistent morphology. The Charenton 

Canal is comprised of eutrophic tidal waters characterized by continuous, bidirectional 

flow based upon response to the moon. The manmade canal is approximately six miles in 

length from the headwaters discharging from Bayou Teche to the confluence of West 

Cote Blanche Bay. This canal provides a pathway for barge traffic between the two water 

bodies. It has a shallow bank structure with a strip of riparian forested land on both sides 

of the canal. In the vicinity of the study area, the substrate consists of a mud (silt, loam 

and clay) with a relatively flat stream bottom. The canal has a uniform depth of 

approximately 30 feet. The stream bank is stable with no erosion slips and is covered 

completely with different types of trees and shrubs. The land use for the surrounding area 

is primarily agriculture with some light industrial and urban land. Further south the land 

use is wetland forest. The elevation of the study area is approximately 2 feet above mean 

sea level. The property is relatively flat. In the general area, the topography slopes 

south-southwest. 

LPDES 316b submittal_final.doc 2-2 January 2009 
2.2.4 Mean Annual Flow 

The Charenton Canal exhibits both negative and positive flow as indicated at the U.S. 

Geological Survey (USGS) Station 07385790 at Baldwin, Louisiana. Flow reversals are 

common during low river flow conditions. A review of the daily flow data at the USGS 

station for the period of October 2001 to September 30, 2002 revealed that 106 values out 

of 362 were negative. The remaining values were positive indicating that flow is 

predominantly towards the gulf. The daily mean stream flow values range from positive 

(toward the gulf) 8,390 cubic feet per second (cfs) to negative (toward Bayou Teche) 

4,820 cfs. The annual mean flow based on this data is 1840 cfs. Critical flow is 989.4 

cfs and the harmonic mean flow is 2968.2 cfs (LDEQ, 2004). The average tidal influence 

is approximately 2 inches (LDEQ, 2004). 

2.3 COOLING WATER INTAKE STRUCTURE DESIGN

The Teche facility operates two separate and distinct CWIS; one for Units 1 and 2, and 

one for Unit 3. The following is a description of the design and operations of each 

CWIS. Table 2-1 is a summary of the cooling water intake design for Units 1 and 2 and 

Unit 3. A water balance diagram for both CWIS may be found on Figure 2-3. 

2.3.1 Unit 1& 2 CWIS 

Cooling water for Units 1 and 2 is withdrawn from the Charenton Canal through an inlet 

channel and gate structure located at Latitude 29° 49’ 20”N, Longitude 91° 32’ 35”W. 

The intake channel culminates at the cooling water screen and pump crib house. The crib 

house contains a single traveling water screen, four circulating water pumps, four service 

water pumps, and one screen wash pump. (Figure 2-4). The combined design flow rate 

for the Units 1 and 2 CWIS is 51,200 gallons per minute (gpm) (74 MGD), which is 

approximately 6 percent of the mean annual flow of the Charenton Canal. The area of 

influence for the CWIS for Units 1 and 2 is assumed to be the full width of the Charenton 

Canal. The screen and pump structure sits back from the Charenton Canal and has 

provisions for two traveling water screens; however, only one traveling screen is 

currently installed and operating. The screen is of standard design, with 3/8-inch mesh. 

All flow entering the screen and pump structure is screened by the single installed screen. 

The current screen has no provisions for handling fish and returning them to the canal 

and there are no lateral fish passages in the screen structure to allow fish to escape. The 

existing approach velocity to the traveling screen at normal water levels for Units 1 and 2 

is calculated to be 0.24 feet per second (fps). At extreme low water level, the approach 

velocity is 0.40 fps. The existing through screen velocity at normal water levels for Units 

1 and 2 is 0.92 fps. At extreme low water level, the through velocity is 0.76 fps. The 

CWIS for Units 1 and 2 are peaking units and operate as needed to meet energy demands, 

usually only for a few hours. During the IM&E Study, the CWIS for Units 1 and 2 

operated 47 days out of the year from May 1, 2006 to May 1, 2007 for a total of 124 

hours. 

LPDES 316b submittal_final.doc 2-3 January 2009 
LPDES 316b submittal_final.doc 2-4 January 2009 

2.3.2 Unit 3 CWIS 

The Unit 3 CWIS consists of a sheet pile flume and a screen and pump structure located 

at Latitude 29° 49’ 22”N, Longitude 91° 32’ 32”W. The pump structure contains two 

traveling water screens and circulating water, service water and screen wash pumps. 

Water from the Charenton Canal enters the Unit 3 CWIS though four openings in the 

front face of the flume, which are located below normal water levels. Water passes 

through the flume to the screen and pump structure (Figure 2-5). The design flow rate for 

the Unit 3 CWIS is 157,500 gpm (227 MGD), which is approximately 16 percent of the 

mean annual flow of the Charenton Canal. The area of influence for the CWIS for Unit 3 

is assumed to be the full width of the Charenton Canal. Circulating water flows through 

intake flumes into intake bays and through traveling water screens before entering the 

circulating water pumps. The traveling water screens are of standard design, with 3/8-

inch mesh and no provisions for removing and returning fish to the Charenton Canal. As 

with Units 1 and 2, the traveling water screen is set back from the shoreline and there are 

no lateral fish passages. The existing approach velocity to the traveling screens at normal 

water levels for Unit 3 is calculated to be 0.72 fps. At extreme low water level, the 

approach velocity is 1.04 fps. The existing through screen velocity at normal water levels 

for unit 3 is 0.72 fps. At extreme low water level, the through velocity is 1.04 fps. The 

CWIS for Unit 3 operates 24 hours per day and 365 days per year, except during 

maintenance shutdowns. During the IM&E Study, the CWIS for Unit 3 operated for 338 

days during the year from May 1, 2006 to May 1, 2007 for a total of 7,670 hours. 

2.4 COOLING WATER SYSTEM

The Teche facility utilizes a once-through cooling water system. Cooling water is 

withdrawn through CWIS located on the western banks of the Charenton Canal 

(subsegment 060601). Design intake rate for this plant is 182,600 gpm. There are two 

CWIS; one for Units 1 and 2 and one for Unit 3. Circulating water flows through an 

intake flume into intake bays and through traveling water screens before entering the 

circulating water pumps. The cooling water system operates 365 days of the year. 

The Teche Units 1 and 2 are peaking units and are each normally operated with one of 

two available circulating water pumps operating. During the summer months, a 

combination of one and two-pumps operating is typical. Unit 3 operates as a base loaded 

unit. It operates with one of two available circulating water pumps during the colder 

months of November, December, January and February. During the rest of the year it 

typically operates with two pumps or a combination of one and two pumps. The cooling 

water system uses 64.02 percent of the design intake flow. 

2.5 FACILITY CAPACITY UTILIZATION

The Teche Units 1 and 2 are peaking units rated at 71 MW and with a capacity utilization 

factor of less than 15 percent. Unit 3 is a 335 MW base-loaded unit with a capacity 

utilization factor of approximately 37 percent. Capacity factors were provided by Cleco 

and are based upon operational data from 2000 to 2005. 
3.0 HISTORICAL INFORMATION 

The following is a discussion of historical studies that have been conducted to assess 

CWIS IM&E, and to characterize the physical and biological conditions of the waterbody 

in the vicinity of the CWIS. These studies provide information regarding the species 

potentially susceptible to IM&E. An IM&E Characterization Study was conducted from 

June 2006 to May 2007 to collect updated information to characterize current levels of 

IM&E at the facility and determine the calculation baseline against which compliance 

with performance standards will be measured. A summary of the findings is described in 

Section 4.0 below. 

3.1 GULF SOUTH RESEARCH INSTITUTE INVESTIGATION (1970’S) 

From 1971 to 1973, Gulf South Research Institute (GSRI) conducted an investigation of 

the ecological condition of the Charenton Canal for Cleco. The full report identifying 

specific methods, data collected, statistical analyses, investigation results and conclusions 

is not available. However, a summary of the first two years of the investigation was 

presented to the Louisiana Stream Control Commission in a public hearing on June 28, 

1973. The following information was obtained from a transcript of the public hearing. 

The investigation was designed to sample nekton, phytoplankton, and benthic organisms 

from several locations to determine the ecological condition of the Charenton Canal. To 

compare the ecological condition near the Teche Facility with that of the surrounding 

environment, sampling occurred near the Teche Facility, two miles from the Station, and 

4.5 miles from the Station on the Charenton Canal. Nektonic organisms were collected 

with otter and surface trawls. Phytoplankton was collected and identified from water 

samples and benthic organisms were collected with a Peterson dredge. Otter trawls 

samples showed no significant difference in the nekton community between the sampling 

locations. Surface trawls collected fish from heated waters (assuming this refers to 

discharge waters) during the periods of elevated temperatures, from 33° Celsius (°C) to 

42°C, however the testimony states that during visual observation fish typically moved 

away from heated waters. The results from benthic sampling were not completely 

analyzed at the time of testimony, but appeared to show no significant difference between 

sampling locations. Phytoplankton sampling also showed no significant difference in the 

phytoplankton community between sampling locations. It was noted that a radioactive 

C14 technique showed a significant reduction in phytoplankton productivity entrained in 

the cooling water during summer with periods of elevated water temperature from 37°C 

to 45oC. The reduction in phytoplankton productivity appeared to be compensated for in 

the reproductive potential of the phytoplankton community because no overall significant 

difference between sampling locations was identified. 

The study was summarized by the following, “There are localized disturbances in the 

biology of the area but the overall population appears to be healthy.” The limitations of 

LPDES 316b submittal_final.doc 3-1 January 2009 
the information given in the testimony should be noted. It would be inappropriate to 

compare the limited information provided in the testimony to future studies because no 

information was provided regarding the final conclusions of the three year study, 

sampling frequencies, methods, or the parameters tested to assess ecological condition 

(e.g., species composition, abundance, species richness, diversity, biomass, catch per unit 

effort). 

 

3.2 LDWF ICHTHYOFAUNA DATA COLLECTION PROGRAM (1986 – 2004) 

The Louisiana Department of Wildlife and Fisheries (LDWF) regularly collects 

ichthyofauna data with a variety of sampling methods throughout the state. Data has 

been requested from the LDWF sampling stations in the vicinity of the Teche Facility 

that would be representative of the ichthyofaunal communities likely to be found at the 

facility. Data were collected from 1986 to 2004 in monthly samples from two locations 

in the Vermilion-Teche watershed. Stumpy Bayou, Station 648 in the LDWF database, is 

located northeast of Cypremort Point and drains into Vermilion Bay (Figure 3-1). Station 

419 in the LDWF database is located off of the northeast point of Marsh Island, in West 

and East Cote Blanche Bays (Figure 3-1). The Teche facility is located on the Charenton 

Canal which receives water from both Bayou Teche and West Cote Blanche Bay, 

depending on tide, river stage, and wind direction. Bayou Teche typically has a 

freshwater to brackish signature whereas West Cote Blanche has brackish to marine 

signature. The LDWF does not collect data from the Charenton Canal specifically, 

however there is a direct connection between Charenton Canal and West Cote Blanche 

Bay. Samples collected at Stumpy Bayou and the northeast point of Marsh Island is 

representative of the taxa that would be expected at the Teche Facility from the estuarine 

influence. 

 

Sampling methods at the Station 419 and Station 648 were not consistent. Samples from 

Station 419, the northeast point of Marsh Island, were collected with a 16-foot flat otter 

trawl in 10 minute trawls. Samples at Station 648, Stumpy Bayou, were collected with a 

50-foot seine with 0.25-inch delta mesh. Both of these sampling methods are commonly 

used in estuarine environments where large areas are surveyed. As with any sampling 

method, trawls and seines are biased. They underestimate the largest and smallest 

organisms found in the environment sampled. However, the data collected does represent 

general species composition for the area of interest (Tables 3-1 and 3-2). 

Species composition, abundance, and total catch by month from 1986 to 2004 were 

examined from Station 419 and Station 648. Data from 2001 to 2003 were summarized 

for monthly species abundance (Figures 3-2 through 3-12) and total monthly catch. The 

most abundant species (≥ 50 individuals/collection) from Station 419 were: bay 

anchovy (Anchoa mitchilli), Atlantic croaker (Micropogonias undulatus), brown shrimp 

(Farfantepenaeus aztecus), sand seatrout (Cynoscion arenarius), blue crab (Callinectes 

sapidus), and white shrimp (Litopenaeus setiferus). The most abundant species (≥ 50 

individuals/collection) from Station 648 were: bay anchovy (Anchoa mitchilli), Atlantic 

croaker (Micropogonias undulatus), Gulf menhaden (Brevoortia patronus), grass shrimp 

LPDES 316b submittal_final.doc 3-2 January 2009 
(Palaemonetes spp.), and striped mullet (Mugil cephalus). Annual trends in total catch at 

Station 419 indicate that total catch was generally greatest in the summer and fall (Figure 

3-13). Total catch at Station 648 was generally greatest in the spring (Figure 3-14). 

The LDWF also regularly samples ichthyofauna at various locations within Lake Fausse 

Point (Figure 3-1). Waters from Lake Fausse Point flow into Bayou Teche and therefore 

have the potential to influence the ichthyofauna of Charenton Canal. Lake Fausse Point 

ichthyofauna data were collected with numerous sampling methods: 1) rotenone, 2) hoop 

nets, 3) gill nets, 4) seines, and 5) electrofishing. Some sampling methods target 

particular species and therefore do not give a representative sample of all taxa present in 

the lake. However, in combining taxa collected from all sampling methods, a fairly 

comprehensive list can be compiled (Table 3-3). The LDWF sampling schedule for Lake 

Fausse Point is not consistent in sampling methods or throughout the year. Some 

sampling methods were used seasonally while others were completed annually. Although 

it is apparent from the data that seasonal variation in catch is lower in lakes than in 

estuaries, predictions of seasonal abundance can not be made from these data. 

The data collected by the LDWF can be used to predict the composition of species that 

might be collected during impingement and entrainment sampling at the Teche facility. 

However, since sampling methods were not consistent, relative abundance of species 

expected to be impinged and entrained cannot be predicted. 

3.3 THREATENED, ENDANGERED, AND OTHER AQUATIC SPECIES OF 

CONCERN

Certain animal species are protected in Louisiana under the Endangered Species Act 

(ESA) of 1973 and Louisiana state regulations. These species are of particular concern 

for 316(b) compliance because the EPA Phase II Rule requires the identification of all 

threatened, endangered, and other protected species that might be susceptible to 

impingement and entrainment at CWIS. A review of the United States Fish and Wildlife 

Service (USFWS) and the LDWF Natural Heritage Program threatened and endangered 

species databases for St. Mary Parish, Louisiana was conducted (Table 3-4). The species 

listed are identified as having the potential to exist within aquatic habitats throughout St. 

Mary Parish. However, no sightings data have been reviewed. Parish threatened and 

endangered species lists are created based on sightings data and/or the potential for 

suitable habitat to exist within a parish. Data requests were submitted to National 

Oceanic and Atmospheric Administration (NOAA), USFWS, and the Louisiana Natural 

Heritage Program for specific sightings data for any of the protected species in the 

vicinity of the Charenton Canal. The USFWS responded in a letter to the data request 

and follow-up phone conversations (personal communication, Angela Culpepper). Their 

database does not include sightings data for any of the aquatic protected species within 

one mile of the Charenton Canal. The NOAA Fisheries office in St. Petersburg, Florida 

is responsible for aquatic marine threatened and endangered species in the Gulf of 

Mexico, i.e., sea turtles. They indicated (personal communication, Eric Hawk) that no 

specific sightings data for any of the protected sea turtles in the vicinity of the Charenton 

LPDES 316b submittal_final.doc 3-3 January 2009 
LPDES 316b submittal_final.doc 3-4 January 2009 

Canal exists. The Louisiana Natural Heritage Program responded in a letter indicating 

that no rare, threatened, or endangered species or critical habitats of concern were found 

within the areas of the facility. Copies of data requests and responses are included in 

Attachment B. 
4.0 FISH/SHELLFISH IMPINGEMENT AND 

ENTRAINMENT CHARACTERIZATION STUDY

REPORT 

A fish and shellfish IM&E Characterization Study was performed in the Charenton Canal 

at the Teche Power Station located in Baldwin in Saint Mary Parish, Louisiana. Teche 

Power Station utilizes a once-through cooling water system consisting of three (Units 1, 

2, and 3) oil and natural gas-fired generating units with a total capacity of 430 MW. 

Only Unit 3 was sampled for IM&E during the period of this study. IM&E results from 

Unit 3 are used to estimate IM&E for Units 1 and 2 based on proportional design flowrelated extrapolations, to give an IM&E characterization of the entire station. 

This final report (Attachment A) includes results from 12 months of impingement and 

entrainment sampling data, from June 2006 to May 2007. A brief summary of the results 

may be found below: 

 A total of 942 eggs, 203 larvae, and 12,828 juvenile fish and shellfish 

were collected from 117 entrainment samples during 12 months of 

sampling at Teche Power Station. All ichthyoplankton combined 

represented 28 species belonging to 21 families. 

 A total of 45,352 individual fish and shellfish were collected from 117 

impingement samples during 12 months of sampling at Teche Power 

Station. All impinged fish and shellfish combined represented 52 species, 

belonging to 32 families. 

 There were an estimated 196.7 million eggs/larvae/juveniles entrained at 

the Teche Power Station from June 2006 to May 2007, under actual 

operating flow conditions. However, as many as 369.6 million 

eggs/larvae/juveniles could have been entrained in this same period if the 

station had operated at full design capacity flows. 

 There were an estimated 417,722 juveniles/adults impinged at Teche 

Power Station from June 2006 to May 2007, under actual operating flow 

conditions. However, as many as 765,720 juveniles/adults could have 

been impinged in this same period if the station had operated at full design 

capacity flows.

LPDES 316b submittal_final.doc 4-1 January 2009 
TABLES
Table 2-1 

TPS Cooling Water Intake Design 

LPDES Section 316(b) Submittal 

Teche Power Station 

Baldwin, St. Mary Parish, Louisiana 

Location – Balwin, St. Mary Parish, Louisiana 

Latitude – 29.49.21 

Longitude – 91.32.35 

Waterbody – Charenton Navigation and Drainage Canal 

Estimated Intake Flow (Based on design circulating pump capacity) 

TPS-1 & TPS-2 TPS-3 

Plant design 60.6 cfs 298.6 cfs 

 

Through Screen Velocities 

TPS-1 & TPS-2 TPS-3 

Normal Water Level 0.24 fps 0.72 fps 

Extreme Low Water Level 0.40 fps 1.04 fps 

Water Level 

Elevations – based on Mean Sea Level (MSL) (based on Unit 3 data from Sargent 

& Lundy, 1968?) 

 HWL – + 12 feet 6 inches El. 

 LWL – - 1 foot 1.5 inches El. 

 ELWL – - 2 feet 6 inches El. 

 NWL – + 3 inches El. 

 

Direction of flow – Southwest (to Gulf), with tidal influence to the Northwest 

(inland) except when high rainfall or diversion water maintains flow to Gulf 

Width of river – Approximately 220 feet at intake of Units 1 and 2 and 235 feet at 

intake of Unit 3 (taken from depth and width survey during 1966 Temperature 

Survey) 

Water depths – Approximate in front of intakes (assumes depth of 37 feet at + 1.0 

MSL taken from depth and width survey during 1966 Temperature Survey and 

from stream cross sections during 1971 Temperature Study) 

N:\CLIENT\CLECO\Teche\LPDES 316b Submittal\Tables\Table 2-1 TPS CWIS Design.doc 1
Table 2-1 

TPS Cooling Water Intake Design 

LPDES Section 316(b) Submittal 

Teche Power Station 

Baldwin, St. Mary Parish, Louisiana 

TPS-1 & TPS-2 TPS-3 

Maximum Depth 46.5 feet 48.5 feet 

Minimum Depth 33.5 feet 36.5 feet 

Normal Depth 35 feet 37 feet 

 

River Flow 

Annual mean flow – 1840 cfs (USGS Station 07385790) 

Critical flow – 989.4 cfs (LDEQ memo dated 1/5/04) 

 Harmonic mean flow – 2,968.2 cfs (LDEQ memo dated 1/5/04) 

Other information 

– the river is used as a drainage and navigation channel 

– canal has never been dredged 

– brackish conditions exist (chlorides vary from 70 to 19,000 mg/l as Cl) 

(Sargent & Lundy, 1968?) 

– average hardness = 100.05 mg/l (LDEQ memo dated 1/5/04) 

– 15 percentile TSS = 22.7 mg/l (LDEQ memo dated 1/5/04) 

– average salinity = 0.2 ppt (LDEQ station 0674) 

Structures (data from drawings provided by Cleco) 

 

Intake Structure TPS-1 & TPS-2 TPS-3 

 Location NW shore NW shore 

 Configuration shoreline shoreline 

 Number of bays 2 4 

 Bay width 11 feet 2 inches 13 feet 11 inches 

 Bottom intake bay opening – El. -25 feet - 25 feet 

 Top intake bay opening – El. -17 feet - 17 feet 

 Top intake sheet pile wall – El. +9 feet 6 inches + 9 feet 6 inches 

 Top of intake structure – El. +14 feet 6 inches +14 feet 9 inches 

Traveling water screens 

Location 11.5 feet upstream of 

circ. pumps 

29 feet upstream of 

circ. pumps 

 Number 1 2 

 Rotation speeds 2.8 rpm 

 Width 10 feet 10 feet 

 Spray nozzle configuration front front 

 Pressure 

 Trough configuration Concrete Concrete - screen wash, 

pipe to canal 

N:\CLIENT\CLECO\Teche\LPDES 316b Submittal\Tables\Table 2-1 TPS CWIS Design.doc 2
Table 2-1 

TPS Cooling Water Intake Design 

LPDES Section 316(b) Submittal 

Teche Power Station 

Baldwin, St. Mary Parish, Louisiana 

N:\CLIENT\CLECO\Teche\LPDES 316b Submittal\Tables\Table 2-1 TPS CWIS Design.doc 3

Circulating Water Pumps 

 Number of pumps 4 2 

 Type of pumps Vertical mixed flow Vertical mixed flow 

 Inlet elevation -12 feet 4 inches 

 Rating 125 hp @ 880 rpm 766 hp @ 440 rpm 

 Flow per pump cfs (gpm) 2 @ 23.4 cfs (10,500 

gpm) and 2 @ 29.4 cfs 

(13,200 gpm) 

149.3 cfs (67,000 gpm) 

Bottom of Well -12 feet 6 inches -14 feet 

Screen Wash Pumps 

 Number 1 2 

 Flow per pump (capacity) 800 gpm 

Low Pressure Service Water Pumps 

Number 4 2 

Rating (hp @ rpm) hp @1160 rpm 

Flow per pump (capacity) 1,000 gpm 7,500 gpm 

Cooling Water Discharge 

 Outfall Number T01, T05 T01, T05 

 Location of discharges downstream 540 feet, 1300 feet 870 feet, 1620 feet 

Power Generation

 

TPS-1 & TPS-2 TPS-3 

Fuel Type Natural gas Natural gas 

Plant Output (design) 71 MW 335 MW 

Operating mode peaking base-loaded 

Plant capacity utilization factor 1 < 15 % > 15 % 

 

1

 based on capacity factors calculated by Cleco and projected rates 
Table 3-1 

Taxa Collected by LDWF from 1986 to 2004 

Northeast Point of Marsh Island, Louisiana 

(Stumpy Bayou, Louisiana) 

LPDES Section 316(b) Submittal 

Teche Power Station 

Baldwin, St. Mary Parish, Louisiana 

Taxa collected: 

Scientific Name Common Name 

Polyodon spathula Paddlefish 

Ictalurus furcatus Blue catfish 

Dorosoma cepedianum Gizzard shad 

Dorosoma petenense Threadfin shad 

Gobiesocidae Skilletfish 

Farfantepenaeus aztecus Brown shrimp 

Litopenaeus setiferus White shrimp 

Callinectes sapidus Blue crab 

Anchoa mitchilli Bay anchovy 

Micropogonias undulatus Atlantic croaker 

Leiostomus xanthurus Spot 

Brevoortia partronus Gulf menhaden 

Polydactylus octonemus Atlantic threadfin 

Cynoscion arenarius Sand seatrout 

Arius felis Sea catfish 

Sphoeroides nephelus Southern puffer 

Palaemonetes vulgaris Grass shrimp 

Bagre marinus Gafftopsail catfish 

Membras martinica Rough silverside 

Trinectes maculatus Hogchoker 

Mugil cephalus Striped mullet 

Lolliguncula brevis Atlantic brief squid 

Citharichthys spilopterus Bay whiff 

Chaetodipterus faber Atlantic spadefish 

Bairdiella chrysoura Silver perch 

Paralichthys lethostigma Southern flounder 

Chloroscombrus chrysurus Atlantic bumper 

Synodus doetens Inshore lizardfish 

Anchoa hepsetus Striped anchovy 

Symphurus plagiusa Blackcheek tonguefish 

Achirus lineatus Lined sole 

Etropus crossotus Fringed flounder 

Trichiurus lepturus Atlantic cutlassfish 

Caranx hippos Crevalle jack 

N:\CLIENT\CLECO\Teche\LPDES 316b Submittal\Tables\Table 3-1Station 419 summary table.doc 1
Table 3-1 

Taxa Collected by LDWF from 1986 to 2004 

Northeast Point of Marsh Island, Louisiana 

(Stumpy Bayou, Louisiana) 

LPDES Section 316(b) Submittal 

Teche Power Station 

Baldwin, St. Mary Parish, Louisiana 

Taxa collected Northeast Point of Marsh Island continued: 

Scientific Name Common Name 

Menticirrhus americanus Southern kingfish 

Cynoscion nebulosus Spotted seatrout 

Menidia beryllina Inland silverside 

Elops saurus Ladyfish 

Lutjanus griseus Gray snapper 

Pogonias cromis Black drum 

Archosargus probatocephalus Sheepshead 

Lagodon rhomboides Pinfish 

Scomberomorus maculatus Spanish mackerel 

Prionotus longispanosus Bigeye searobin 

Sphyraena guachancho Guaguanche 

Penaeus duorarum Pink shrimp 

Xiphopenaeus kroyeri Seabob 

Dasyatis sabina Atlantic stingray 

Ophichthus gomesi Shrimp eel 

Centropristis philadelphica Rock sea bass 

Selene vomer Lookdown 

Selene setapinnis Atlantic moonfish 

Stellifer lanceolatus Star drum 

Dormitator maculatus Fat sleeper 

Gobionellus hastatus Sharptail goby 

Gobiosoma bosci Naked goby 

Peprilus alepidotus Harvestfish 

Gobiesox strumosus Skilletfish 

Porichthys plectrodon Atlantic midshipman 

Macrobrachium ohione River shrimp 

Gobionellus shufeldti Freshwater goby 

Syacium gunteri Shoal flounder 

Peprilus burti Gulf butterfish 

Hemicaranx amblyrhynchus Bluntnose jack 

Sphoeroides parvus Least puffer 

Menticirrhus littoralis Gulf kingfish 

Paleamonetes spp. Grass shrimp 

Negaprion brevirostris Lemon shark 

Menippe adina Gulf stone crab 

Xanthidae Unidentified mud crab 

Note: 

Data collected using 16' flat otter trawl, 10 minute trawls at Latitude 29°34’24”, 

Longitude 91°42’12”. 

N:\CLIENT\CLECO\Teche\LPDES 316b Submittal\Tables\Table 3-1Station 419 summary table.doc 2
Table 3-2 

Taxa Collected by LDWF from 1986 to 2004 

Stumpy Bayou, Louisiana 

LPDES Section 316(b) Submittal 

Teche Power Station 

Baldwin, St. Mary Parish, Louisiana 

Taxa collected: 

Scientific Name Common Name 

Micropterus salmoides Largemouth bass 

Micropterus punctulatus Spotted bass 

Morone mississippiensis Yellow bass 

Pomoxis annularis White crappie 

Pomoxis nigromaculatus Black crappie 

Pomoxis spp. Crappie 

Lepomis macrochirus Bluegill 

Lepomis microlophus Redear sunfish 

Lepomis punctatus Spotted sunfish 

Lepomis cyanellus Green sunfish 

Lepomis humilis Orangespotted sunfish 

Lepomis gulosus Warmouth 

Lepomis spp. Hybrid sunfish 

Aplodinotus grunniens Freshwater drum 

Ictalurus natalis Yellow bullhead 

Ictalurus melas Black bullhead 

Ictalurus punctatus Channel catfish 

Ictalurus furcatus Blue catfish 

Lepisosteus oculatus Spotted gar 

Dorosoma cepedianum Gizzard shad 

Dorosoma petenense Threadfin shad 

Alosa chrysochloris Skipjack herring 

Fundulus confluentus Marsh killifish 

Fundulus jenkinsi Saltmarsh topminnow 

Gambusia affinis Mosquitofish 

Lucania parva Rainwater killifish 

Poecilia latipinna Sailfin molly 

Farfantepenaeus aztecus Brown shrimp 

Litopenaeus setiferus White shrimp 

Callinectes sapidus Blue crab 

Anchoa mitchilli Bay anchovy 

Micropogonias undulatus Atlantic croaker 

Leiostomus xanthurus Spot 

Brevoortia partronus Gulf menhaden 

Cynoscion arenarius Sand seatrout 

Palaemonetes vulgaris Grass shrimp 

N:\CLIENT\CLECO\Teche\LPDES 316b Submittal\Tables\Table 3-2 Station 648 summary table.doc 1
Table 3-2 

Taxa Collected by LDWF from 1986 to 2004 

Stumpy Bayou, Louisiana 

LPDES Section 316(b) Submittal 

Teche Power Station 

Baldwin, St. Mary Parish, Louisiana 

N:\CLIENT\CLECO\Teche\LPDES 316b Submittal\Tables\Table 3-2 Station 648 summary table.doc 2

Taxa collected Stumpy Bayou continued: 

Scientific Name Common Name 

Bagre marinus Gafftopsail catfish 

Membras martinica Rough silverside 

Trinectes maculatus Hogchoker 

Mugil cephalus Striped mullet 

Citharichthys spilopterus Bay whiff 

Bairdiella chrysoura Silver perch 

Paralichthys lethostigma Southern flounder 

Prionotus tribulus Bighead searobin 

Symphurus plagiusa Blackcheek tonguefish 

Achirus lineatus Lined sole 

Etropus crossotus Fringed flounder 

Caranx hippos Crevalle jack 

Cynoscion nebulosus Spotted seatrout 

Menidia beryllina Inland silverside 

Fundulus similis Longnose killifish 

Elops saurus Ladyfish 

Sciaenops ocellatus Red drum 

Lagodon rhomboides Pinfish 

Strongylura marina Atlantic needlefish 

Cyprinodon variegatus Sheepshead minnow 

Fundulus grandis Gulf killifish 

Syngnathus scovelli Gulf pipefish 

Oligoplites saurus Leatherjacket 

Dormitator maculatus Fat sleeper 

Gobioides broussoneti Violet goby 

Gobionellus hastatus Sharptail goby 

Gobiosoma bosci Naked goby 

Microgobius gulosus Clown goby 

Panopeus herbstii Atlantic mud crab 

Uca pugnax Atlantic marsh fiddler 

Macrobrachium ohione River shrimp 

Syngnathus louisianae Chain pipefish 

Palaemonetes pugio Grass shrimp 

Palaemonetes paludosus Grass shrimp 

Rhithropanopeus harrisii Mud crab 

Gobionellus shufeldti Freshwater goby 

Procambarus clarki Red swamp crawfish 
Table 3-2 

Taxa Collected by LDWF from 1986 to 2004 

Stumpy Bayou, Louisiana 

LPDES Section 316(b) Submittal 

Teche Power Station 

Baldwin, St. Mary Parish, Louisiana 

Taxa collected Stumpy Bayou continued: 

Scientific Name Common Name 

Procambarus blandingi White river crawfish 

Mugil curema White mullet 

Fundulus pulvereus Bayou killifish 

Eurytium limosum Broadback mud crab 

Eucinostomus argenteus Spotfin mojarra 

Adinia xenica Diamond killifish 

Xanthidae Unidentified mud crab 

Lutjanus jocu Dog snapper 

 

Note: Data collected using 50’ seine with 1⁄4 inch delta mesh at Latitude 29°50’24”, 

Longitude 91°47’36”. 

N:\CLIENT\CLECO\Teche\LPDES 316b Submittal\Tables\Table 3-2 Station 648 summary table.doc 3
Table 3-3

Taxa Collected by LDWF from 1988 to 2004 

Lake Fausse Point, Louisiana 

LPDES Section 316(b) Submittal 

Teche Power Station 

Baldwin, St. Mary Parish, Louisiana 

N:\CLIENT\CLECO\Teche\LPDES 316b Submittal\Tables\Table 3-3 Lake Fausse Point summary table.doc 1 

Taxa collected: 

Scientific Name Common Name 

Micropterus salmoides Largemouth bass 

Morone mississippiensis Yellow bass 

Pomoxis annularis White crappie 

Pomoxis nigromaculatus Black crappie 

Lepomis macrochirus Bluegill 

Lepomis microlophus Redear sunfish 

Lepomis humilis Orangespotted sunfish 

Lepomis gulosus Warmouth 

Lepomis megalotis Longear sunfish 

Aplodinotus grunniens Freshwater drum 

Ictalurus natalis Yellow bullhead 

Ictalurus punctatus Channel catfish 

Pylodictis olivaris Flathead catfish 

Ictalurus furcatus Blue catfish 

Lepisosteus oculatus Spotted gar 

Dorosoma cepedianum Gizzard shad 

Dorosoma petenense Threadfin shad 

Anchoa mitchilli Bay anchovy 

Micropogonias undulatus Atlantic croaker 

Brevoortia partronus Gulf menhaden 

Cynoscion arenarius Sand seatrout 

Trinectes maculatus Hogchoker 

Mugil cephalus Striped mullet 

Bairdiella chrysoura Silver perch 

Paralichthys lethostigma Southern flounder 

Elops saurus Ladyfish 

Strongylura marina Atlantic needlefish 

Gobioides broussoneti Violet goby 

Gobiidae Unknown goby 

Morone saxatilis Striped bass 

Anguilla rostrata American eel 

Cyprinidae Unknown minnows 

Ictaluridae Unknown madtoms 

Carpoides carpio Common carp 

Ictiobus bubalus Smallmouth buffalo 

Ictiobus cyprinellus Bigmouth buffalo 
Table 3-3

Taxa Collected by LDWF from 1988 to 2004 

Lake Fausse Point, Louisiana 

LPDES Section 316(b) Submittal 

Teche Power Station 

Baldwin, St. Mary Parish, Louisiana 

N:\CLIENT\CLECO\Teche\LPDES 316b Submittal\Tables\Table 3-3 Lake Fausse Point summary table.doc 2 

Taxa collected Lake Fausse Point continued: 

Scientific Name Common Name 

Ameiurus melas Black bullhead 

Notemigonus crysoleucas Golden shiner 

Menidia audens Mississippi silverside 

Mugil cephalus Striped mullet 

Amia calva Bowfin 

Morone chrysops White bass 

Polyodon spathula Paddlefish 

Lepisosteus platostomus Shortnose gar 

Labidesthes sicculus Brook silverside 

Note: Data collected using rotenone, hoop nets, gill nets, seines, electrofishing at 

Latitude 29° 57’ 14.34”, Longitude 91° 34’ 43.19”. 
Table 3-4 

Threatened and Endangered Species and Species of Concern Listed 

in St. Mary Parish, Louisiana 

LPDES Section 316(b) Submittal 

Teche Power Station 

Baldwin, St. Mary Parish, Louisiana 

Common Name Scientific Name Federal 

Rank 

State 

Rank 

Global 

Rank 

Gulf sturgeon Acipenser oxyrinchus desotoi LT 

Pallid sturgeon Scaphirhynchus albus LE 

Green sea turtle Chelonia mydas LT 

Hawksbill sea turtle Eretmochelys imbricate LE 

Leatherback sea turtle Dermochelys coriacea LE 

Loggerhead sea turtle Caretta caretta LT 

Kemp’s Ridley sea turtle Lepidochelys kempii LE 

Paddlefish Polyodon spathula S3 G4 

EXPLANATION OF RANKING CATEGORIES EMPLOYED BY NATURAL HERITAGE PROGRAMS 

NATIONWIDE 

Each element is assigned a single global rank as well as a state rank for each state in which it occurs. Global ranking 

is done under the guidance of NatureServe, Arlington, VA. State ranks are assigned by each state’s Natural Heritage 

Program, thus a rank for a particular element may vary considerably from state to state. Federal ranks are designated 

by the U.S. Fish & Wildlife Service under the provisions of the Endangered Species Act of 1973. 

FEDERAL RANKS: 

LE = Listed Endangered 

LT = Listed Threatened 

STATE RANK: 

S3 = rare and local throughout the state or found locally (even abundantly at some of its locations) in a restricted 

region of the state, or because of other factors making it vulnerable to extirpation (21 to 100 known extant 

populations) 

GLOBAL RANKS: 

G4 = apparently secure globally, though it may be quite rare in parts of its range, especially at the periphery (100 to 

1000 known extant populations) 

Sources: USFWS and LDWF Natural Heritage Program Databases 

N:\CLIENT\CLECO\Teche\LPDES 316b Submittal\Tables\Table 3-4 St. Mary Parish T&E.doc 1 
 

FIGURES
0686

0691

0674

0100

07385790

07385800

07385700

CLECO POWER, LLC

BALDWIN, LOUISIANA

FIGURE 2-1

VICINITY MAP / SOURCE WATER

AND SURFACE WATER SYSTEM

LPDES SECTION 316(b) SUBMITTAL

TECHE POWER STATION

BALDWIN, ST. MARY PARISH, LOUISIANA

3.5 1.75 0

Miles

APPROVED BY CHECKED BY DRAWN BY OFFICE

BTR D. COMEAUX 01/08/09

DRAWINGNUMBER cleco_126934_AV02

REFERENCE:

USGS 100K Topographic Quadrangle Maps

Baton Rouge, Crowley, Morgan City & White Lake, LA

TO GULF

CALUMET FLOOD GATES

CHARENTON CANAL

FLOODGATES

BAYOU TECHE

TECHE POWER STATION

INTRACOASTAL WATERWAY

Legend

Sampling Stations

DEQ

USGS

NGS USA Topographic Maps

Map Document: (G:\Drafting\Cleco\126934\ArcView\GIS_Documents\Project_Maps\MXD\cleco_126934_AV02.mxd) 1/12/2009 -- 3:57:58 PM

Baldwin

OID AGENCY STREAM_SEG STATION_NU

0 DEQ 060501 0100

1 DEQ 060601 0674

2 DEQ 061001 0691

3 DEQ 060907 0686

4 USGS 07385700

5 USGS 07385800

6 USGS 07385790




LDWF Station 419

LDWF Station 648

LDWF Lake Fausse Point

Stations

Charenton Canal

W e s t C o t e B l a n c h e B a y

E a s t C o t e B l a n c h e B a y

V e r m i l i o n

B a y

Bayou Teche

FIGURE 3-1

LDWF SAMPLING STATIONS

REFERENCE:

Landsat Thematic Mapper Satellite Image: 2002 RGB753-Pan Merge,

LDEQ (2002) [louisiana-tm753-pan-fusion-2002]

CLECO POWER, LLC

BALDWIN, LOUISIANA

Miles

4 2 0 4

LPDES SECTION 316(b) SUBMITTAL

TECHE POWER STATION

BALDWIN, ST. MARY PARISH, LOUISIANA

APPROVED BY CHECKED BY DRAWN BY OFFICE

BTR D. COMEAUX 01/08/09

DRAWINGNUMBER cleco_126934_AV01 Map Document: (G:\Drafting\Cleco\126934\ArcView\GIS_Documents \Project_Maps\MXD\cleco_126934_AV01.mxd) 1/12/2009 -- 3:55:15 PM
 

ATTACHMENT A

FISH/SHELLFISH IMPINGEMENT AND

ENTRAINMENT CHARACTERIZATION STUDY

REPORT
FINAL

FISH/SHELLFISH IMPINGEMENT AND ENTRAINMENT

CHARACTERIZATION STUDY REPORT

Cleco Power LLC 

Teche Power Station 

Baldwin, St. Mary Parish, Louisiana 

Covering Sampling from June 2006–May 2007

January 2009

Submitted For: 

Teche Power Station 

237 Newman St. 

Baldwin, St. Mary Parish, Louisiana 70514 

Prepared By: 

4171 Essen Lane 

Baton Rouge, LA 70809 
 

N:\CLIENT\CLECO\Teche\LPDES 316b Submittal\Teche Final IM&E 316b Report4.doc January 2009 

i 

TABLE OF CONTENTS ___________________________________________ 

1.0 Introduction ..................................................................................................................................... 1-1

2.0 Sampling & Data Collection Methods .............................................................................................. 2-1

2.1 Impingement Sampling ......................................................................................................... 2-1

2.2 Entrainment Sampling .......................................................................................................... 2-2

3.0 Field Processing & Identification ..................................................................................................... 3-1

3.1 Laboratory Processing of Entrainment Samples ................................................................... 3-1

3.2 Quality Assurance & Quality Control .................................................................................... 3-2

3.3 Data Analysis ....................................................................................................................... 3-2

3.4 Threatened & Endangered Species ...................................................................................... 3-2

4.0 Impingement Results ...................................................................................................................... 4-1

4.1 Abundance, Density, and Percent Occurrence ..................................................................... 4-1

4.1.1 Estimated Annual Impingement ............................................................................... 4-8

4.1.2 Seasonal & Diel Patterns of Impingement ............................................................. 4-11

5.0 Entrainment Results ........................................................................................................................ 5-1

5.1 Abundance, Density, and Percent Occurrence ..................................................................... 5-1

5.1.1 Estimated Annual Entrainment ................................................................................ 5-4

5.1.2 Seasonal & Diel Patterns of Entrainment ................................................................ 5-7

6.0 Entrainment & Impingement Impacts .............................................................................................. 6-1

7.0 IM & E Lights On/ Lights Off Sampling ............................................................................................ 7-1

7.1 Entrainment Light/ No Light Analysis .................................................................................... 7-1

7.2 Impingement Light/ No Light Analysis .................................................................................. 7-1

7.4 Tidal Flow Conditions and Effects on Impingement & Entrainment ...................................... 7-2

7.5 Results ................................................................................................................................. 7-2

8.0 Equivalent Adult Loss ..................................................................................................................... 8-1

9.0 Physical Parameters ....................................................................................................................... 9-1

10.0 Species Life-History Information ..................................................................................................... 9-7

10.1 Atlantic Croaker .................................................................................................................... 9-9

10.2 Bay Anchovy ........................................................................................................................ 9-9

10.3 Blue Crab ............................................................................................................................. 9-9

10.4 Hogchoker .......................................................................................................................... 9-10

10.5 Brown Shrimp ..................................................................................................................... 9-10

10.6 Ohio River Shrimp .............................................................................................................. 9-10

11.0 References ................................................................................................................................... 10-1
 

N:\CLIENT\CLECO\Teche\LPDES 316b Submittal\Teche Final IM&E 316b Report4.doc January 2009 

ii 

List of Tables ___________________________________________________ 

Table 2-1: Distribution of sampling periods during each sample week ....................................................... 2-1

Table 3-1: Codes used in the field to identify the fish condition ................................................................ 3-1 

Table 4-1: Species list, in phylogenetic order, of all impinged fish/shellfish collected to date at Teche Power 

Station, and the representation among lifestages (Juvenile, Adult) based on specimens 

identified to at least the family level, June 2006–May 2007. .............................................. 4-1 

Table 4-2: Annual total and percent composition fish/shellfish collected during impingement sampling, June 

2006–May 2007. ............................................................................................................... 4-2 

Table 4-3: Assessment of condition for impinged specimens collected, using the criteria described in 

section 2 ........................................................................................................................... 4-5 

Table 4-4: Estimated ANNUAL impingement by species at Teche Power Station based on full design flow 

(calculation baseline) operation, June 2006–May 2007. ................................................... 4-9 

Table 5-1: Species list, in phylogenetic order, of all entrained fish/shellfish collected to date at Teche Power 

Station, and the representation among lifestages (Egg, Larvae, Juvenile, Adult) based on 

sample collections for those specimens identified down to at least the family level, June 

2006–May 2007. ................................................................................................................ 5-1 

Table 5-2: Total annual collected and percent composition for fish/shellfish collected during entrainment 

samples, June 2006–May 2007 ......................................................................................... 5-2 

Table 5-3: Estimated ANNUAL entrainment by species at Teche Power Station based on full station 

(calculation baseline) operation, June 2006–May 2007. .................................................... 5-5 

Table 6-1: Estimated total entrainment and impingement by species at Teche Power Station based on 

actual flow Units 1, 2,& 3 cooling water flow, June 2006-May 2007 (Scenario-1). ............. 4-2 

Table 6-2: Estimated total entrainment and impingement by species at Teche Power Station based on Units 

1, 2, & 3 design capacity cooling water flow rates during the 12-month monitoring period 

(Scenario-2) ....................................................................................................................... 4-6 

Table 7-1: Lights on/ lights off sampling periods at Teche Power Station, April 2007-May 2007. ............... 5-1 

Table 9-1: Water quality data collected from Unit 3 intake flow during sampling events at Teche Power 

Station, June 2006–May 2007 ........................................................................................... 9-2 
 

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List of Figures __________________________________________________ 

Figure 1-1: Flow data for actual operation of Unit 3 at Teche Power Station during the 12-month sample 

period, June 2006 – May 2007 .......................................................................................... 1-2

Figure 2-1: Entrainment sampling set-up at Teche Power Station, showing the plankton net collecting 

entrained organisms from the intake bypass pipe, June 2006–May 2007. ........................ 2-3

Figure 4-1: Estimated impingement rate (# of fish/shellfish per week) at Teche Power Station, June 2006-

May 2007. ....................................................................................................................... 4-12 

Figure 4-2: Seasonal patterns of impingement rates (# of fish/shellfish per week) for the 7 most abundant 

fish/shellfish impinged at Teche Power Station, June 2006–May 2007. ......................... 4-12 

Figure 5-1: Estimated entrainment rate for eggs, larvae, & juvenile (# of fish/shellfish per week) at Teche 

Power Station, June 2006–May 2007. ............................................................................... 5-7 

Figure 5-2: Seasonal patterns of entrainment rates (# of fish/shellfish per week) with full pump design flow 

at Teche Power Station, June 2006–May 2007. ............................................................... 5-8 

Figure 9-1: Hydrograph showing the conditions near Teche Power Station during the 12-month sampling 

period, June 2006–May 2007 ............................................................................................ 9-1 

Figure 9-2: Daily discharge data showing the conditions near Teche Power Station during the 12-month 

sampling period, June 2006–May 2007 ............................................................................. 9-2 

Figure 9-3: Dissolved oxygen and salinity data recorded at Teche Power Station during the 12-month 

sampling period, June 2006–May 2007 ............................................................................. 9-7 

Figure 9-4: The relationship between salinity and D.O. versus IM&E at Teche Power Station during the 12-

month sampling period, June 2006–May 2007 .................................................................. 9-8 

List of Appendices _______________________________________________ 

Appendix A Standard Operating Procedure (SOP) 

Appendix B Tables Listing the Total Actual & Estimated Weekly Entrainment (eggs and larvae) and 

Impingement (Juvineniles and Adults) Densities 

Appendix C National Heritage Species List 

Appendix D Lights On/Lights Off Sampling Data 
 

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Acronyms and Abbreviations ______________________________________ 

BPJ Best Professional Judgment 

CDS Comprehensive Demonstration Study 

CWIS Cooling Water Intake Structure 

DO Dissolved Oxygen 

EAL Equivalent Adult Loss 

EPA U.S. Environmental Protection Agency 

ESA Endangered Species Act 

IM&E Impingement Mortality and Entrainment 

ISO Independent System Operator (New England) 

LDEQ Louisiana Department of Environmental Quality 

LDWF Louisiana Department of Wildlife and Fisheries 

LPDES Louisiana Pollutant Discharge Elimination System 

LSU Louisiana State University 

MGD Million Gallons per Day 

m Meter 

m3 Cubic Meter 

mm Millimeter 

MW Megawatts 

PIC Proposal for Information Collection 

QA Quality Assurance 

QA/QC Quality Assurance/Quality Control 

QC Quality Control 

SOP Standard Operating Procedure 

SRNR LSU Agricultural Center, School of Renewable Natural Resources 

TL Total Length 

USFWS U.S. Fish and Wildlife Service 

USGS U.S. Geological Survey 

YOY Young of Year 
 

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Report Summary ________________________________________________ 

A fish and shellfish Impingement Mortality and Entrainment Characterization (IM&E) Study 

was performed in the Charenton Canal at the Teche Power Station located in Baldwin in Saint 

Mary Parish, Louisiana. Teche Power Station is an existing steam electric generating facility that 

is operated by Cleco Power LLC (Cleco) with a once through cooling system for existing Units 

1, 2, and 3. 

This final report includes results from 12 months of impingement and entrainment sampling data, 

from June 2006 to May 2007. 

• A total of 942 eggs, 203 larvae, and 12,828 juvenile fish and shellfish were 

collected from 117 entrainment samples during 12 months of sampling at Teche 

Power Station. All ichthyoplankton combined represented 28 species belonging 

to 21 families. 

• All of the entrained species in the egg stage could not be identified to a particular 

species or group. 

• The most abundant entrained species in the larval stage were Decapoda 

(unidentified crab & shrimp), unidentified fish remains, and Gobiidae (gobies) 

which together accounted for approximately 39%, 26%, and 24% of the entrained 

larvae. 

• The most abundant entrained species in the juvenile stage were bay anchovy and 

mysid shrimp, which accounted for approximately 32% and 56% of the 

entrainment larvae, respectively. 

• A total of 45,352 individual fish and shellfish were collected from 117 

impingement samples during 12 months of sampling at Teche Power Station. All 

impinged fish and shellfish combined represented 52 species, belonging to 32 

families. Atlantic croaker was the most abundant species and accounted for 

approximately 33% of the total number of fish and shellfish collected, 

respectively. Other abundant species impinged during the 12 months of sampling 

include unidentified shrimp remains (14%), brown shrimp (13%), Ohio river 

shrimp (10%), blue crab (9%), and bay anchovy (8%). Shellfish accounted for 

46% of all impinged fish and shellfish. 

• Weekly impingement rates averaged 14,726 fish per week over the entire 12-

month sampling period. However, this average was strongly influenced by high 

abundances of Atlantic croaker in June and July 2006. 

• There were an estimated 196.7 million eggs/larvae/juveniles entrained at the 

Teche Power Station from June 2006 to May 2007, under actual operating flow 

conditions. However, as many as 369.6 million eggs/larvae/juveniles could have 

been entrained in this same period if the station had operated at full design 

capacity flows. 
 

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• There were an estimated 417,722 juveniles/adults impinged at Teche Power 

Station from June 2006 to May 2007, under actual operating flow conditions. 

However, as many as 765,720 juveniles/adults could have been impinged in this 

same period 7if the station had operated at full design capacity flows. 
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1.0 Introduction 

Shaw Environmental, Inc (Shaw) and Providence Engineering and Environmental Group LLC 

(Providence) in conjunction with Louisiana State University (LSU) Agricultural Center, School 

of Renewable Natural Resources (SRNR) conducted a 12-month Impingement Mortality and 

Entrainment (IM&E) sampling program at the Cleco Teche LLC (Cleco) Teche Power Station 

located in St. Mary Parish, Louisiana, from June 2006 to May 2007. This sampling program was 

conducted in accordance with the now suspended 316(b) Phase II Rule to satisfy data 

requirements necessary to characterize the existing levels of IM&E at this facility, as described 

in the Proposal for Information Collection (PIC) submitted to Louisiana Department of 

Environmental Quality (LDEQ) on April 6, 2006. The purpose of this monitoring was to 

evaluate the occurrence and abundance of species impinged and entrained in the cooling water 

intakes at Teche Power Station. 

Teche Power Station utilizes a once-through cooling water system consisting of three (Units 1, 2, 

and 3) oil and natural gas-fired generating units with a total capacity of 430 megawatts (MW). 

Only Unit 3 was sampled for IM&E during the period of this study. IM&E results from Unit 3 

are used in this report to estimate IM&E for Units 1 and 2 based on proportional design flowrelated extrapolations, to give an IM&E characterization of the entire station. The daily flow 

rates for Unit 3 for June 2006 through May 2007 are presented on Figure 1-1. 

There are two cooling water intake structures (CWIS); one for Units 1 and 2, and one for Unit 3. 

The existing intake structures for the Units 1 and 2 and Unit 3 cooling water system are each 

equipped with two sets of standard traveling water screens (3/8-mesh) designed to prevent debris 

from entering the power plant with no fish and shellfish protection features. A high pressure 

spray header washes debris and organisms off the screens and into the return trough leading back 

to the Charenton Canal. Impinged fish and shellfish were collected from this return trough. 

Entrained fish and shellfish were sampled from a bypass tap located on the main cooling water 

intake pipe, behind the Unit 3 circulating water pump. Each of the monthly, 24-hour sampling 

events was broken into three, 8 hour blocks. 

The original goal of this study was to provide the data necessary to characterize the baseline 

IM&E impacts and to propose reductions in accordance with the Phase II 316(b) regulations. 

The Phase II Rule has been formally suspended and Cleco’s Louisiana Pollutant Discharge 

Elimination System (LPDES) permit has been modified to remove the requirement to submit a 

CDS. 

However, this IM&E characterization study does provide the most current information to assess 

the facility’s IM&E impacts. These impacts can be compared to the calculation baseline 
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condition, with respect to the Best Professional Judgment (BPJ) criteria currently in place. No 

previous IM&E studies, or 316(b) demonstrations, have occurred at this facility. 

Figure 1-1: Flow data for actual operation of Unit 3 at Teche Power Station during the 12-

month sample period, June 2006 –May 2007. 
 

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2.0 Sampling & Data Collection Methods 

All impingement and entrainment sampling followed the monthly schedule described in the 

Standard Operating Plan (SOP) located in Appendix A. 

2.1 Impingement Sampling 

Impingement sampling was conducted by collecting all fish and shellfish washed off both of the 

Unit 3 traveling water screens and into the collection basket for a period of 24 hours (i.e. one 

sample event). Each impingement sampling event covered an entire 24-hour period, which was 

divided into three 8-hour sampling blocks (Table 2-1). Immediately prior to the sampling event 

the traveling screens were rotated for at least two continuous cycles to ensure that all previously 

accumulated organisms/debris were cleared. A custom-fitted 1⁄4-inch nylon knotless mesh net 

liner was set inside the metal debris basket; this allowed for organisms to remain in optimal 

condition during the collection period. The mesh net liner conservatively retained all organisms 

impinged on the 3⁄8-inch square mesh of the traveling water screens. The metal debris basket was 

mounted on a pulley system operated by a hand-crank. This set-up allowed for the basket to be 

lowered into the screenwash discharge fish-return during sampling and hoisted up during sample 

retrieval. All fish and shellfish collected were measured to the nearest mm, and identified to the 

lowest practical taxon level using standard taxonomic keys. Overall condition (live, dead, 

head/body only), was also assessed on each collected specimen. Field notes included start/end 

times, number of screens operating, tide stage and direction, and other additional information 

related to general sampling conditions. 

Table 2-1: Distribution of sampling periods during each sample week. 

Sample Block 8-hr. Period 

Time of 100 m3

Entrainment 

Sample 

A – morning 02:00-10:00 07:30 – 10:00 

B – day 10:00 –18:00 15:30 – 18:00 

C – night 18:00 – 02:00 23:30 – 02:00 

Each 8-hour impingement sample was processed immediately on-site. Sample processing 

involved separating fish and shellfish from debris and other non-target organisms (reptiles, 

amphibians, and other non-target invertebrates). Impinged fish and shellfish were identified to 

the lowest possible taxon (usually species) and counted. Fish and shellfish were measured to the 

nearest 1-millimeter (mm) total length (TL). If more than 100 individuals of any species were 
 

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observed, then length measurements were obtained for a representative sub-sample of 25 

individuals. 

Total impingement density during each week was used to evaluate seasonal occurrence patterns 

by species. Diel abundance patterns were also evaluated by comparing the average density 

among the three distinct impingement sampling blocks. Seasonal abundance patterns were also 

evaluated in a similar manner. To obtain values for non-sampled weeks, the average 

impingement for the closest week prior to, and after, that particular non-sampled week was used. 

In most cases, this average value was used for multiple non-sampled weeks between sample 

weeks. For example, if total impingement for sample week A and sample week D was 100,000 

fish and 200,000 fish, respectively, then the average value between weeks A and D (150,000 

fish) was used to obtain values for the non-sampled weeks B and C. If the interval between 

sample events was four weeks, these non-sampled weeks are identified as such (marked in red) 

in Appendix B. 

2.2 Entrainment Sampling 

Traditional towed plankton net entrainment sampling techniques require the assumption that the 

location of sampling is representative of the plankton abundance entrained in the circulating 

water flows. Assumptions regarding the representativeness of the sample were not needed for 

the entrainment data, since collections were made directly from the cooling water intake. The 

entrainment samples used a digital pipe-mounted flow meter to measure entrainment sample 

flows through the net. The entrainment sampling did not require a flow meter outside the net 

since the net was not towed through the water column. 

A total of three entrainment samples were collected during each 24-hour sample event. The 

number of fish and shellfish eggs and larvae present in each entrainment sample were converted 

to density estimates (number of fish and shellfish eggs/larvae per 100 cubic meters {m3 } of 

water). Average weekly entrainment density was used to evaluate seasonal occurrence patterns 

by species. Diel abundance patterns were also evaluated by comparing the average weekly 

density among the three distinct entrainment sampling blocks. 

An innovative sampling method was used to collect fish and shellfish entrainment samples from 

Unit 3. A ball-valve actuated tap on the circulating water system piping situated downstream of 

Unit 3’s circulating pumps allowed for direct sampling of the fish and shellfish that were 

entrained within the plant’s cooling water flow. The 4-inch bypass pipe and associated valves 

supplied a constant stream of intake cooling water to an energy dissipation tank where a standard 

0.5-meter (m) diameter plankton net (0.505 mm mesh) was used to collect the entrained 

organisms (Figure 2-1). During entrainment sampling, the net ring was held in place under the 

pipe while the net floated freely in the tank. A flow meter (Greyline Instruments Area Velocity 

Flow meter with velocity/level sensor QZO2L Model-AVFM-II-C1A2A1A4A with a flow 
 

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totalizer) was used to measure the volume of intake water sampled, with an instantaneous 

velocity accuracy of ±2%, according to the manufacturer’s specifications. Each entrainment 

sample was collected from approximately 100 m3

 of intake water and the collection efficiencies 

for entrainment samples were always 100%. The minimum duration of sampling (time needed to 

obtain more than 100 m3

) was consistent, but somewhat dependent on cooling water intake flow. 

Sampling flows into and out of the sampling tank could also be controlled by manually adjusting 

the valves to achieve the desired flow rate. Sample volume collected was typically between 100 

to 110 m3

, regardless of sample duration. Based on these conditions, there is no reason to 

suspect that any extrusion of organisms through the mesh occurred with this entrainment 

sampling method. 

Figure 2-1: Entrainment sampling set-up at Teche Power Station, showing the plankton net 

collecting entrained organisms from the intake bypass pipe, June 2006 – May 2007. 
 

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3.0 Field Processing & Identification 

All impingement samples were collected and identified by Providence with the assistance of 

fisheries biologists from LSU SRNR on-site at Teche Power Station. All impingement samples 

were processed in accordance with Shaw/Providence/LSU’s quality assurance and quality 

control (QA/QC) specifications, as described in the SOP document for this project (see 

Appendix A). Field guides/taxonomic keys were used to identify fish and shellfish down to the 

lowest practical taxon. A count, a measurement of each individual’s total length (mm), and a 

note of the condition of each individual was recorded on the information data sheet for each 

sample event. 

The condition of the fish collected was also observed during the study. Individuals that were 

measured for TL were also inspected for screen marks, injury, etc. Individuals were categorized 

as live (L) or dead (D) and field codes were used to qualitatively record any injury/damage status 

SOP (Table 2-2). 

Table 3-1: Codes used in the field to identify the fish condition. 

Observed Condition Code 

Live/Dead, in good condition L D 

*Dead, in poor condition/decomposing -- 1 

Fin Damage 2 2 

Scale Damage 3 3 

Blackspot 4 4 

Skin Ulcer/Lesion 5 5 

Wound, General 6 6 

Fungal Growth 8 8 

Head/Tail only (or other described in remarks) 9 9 

*indicates that specimen may have been dead prior to impingement on the screens (in river, or intake 

tunnel/forebay) 

3.1 Laboratory Processing of Entrainment Samples 

All entrainment samples were preserved with 10% buffered formalin and stored in a cooler onsite. Preserved samples were shipped via courier to LSU SRNR Laboratory in Baton Rouge. All 

entrainment samples were processed in accordance with Shaw/Providence/LSU’s quality 

assurance and quality control (QA/QC) specifications, as described in the SOP document for this 

project. A minimum criterion of 200 eggs or 100 larvae was used to invoke sub-sampling 

procedures. However, for this study, the entire contents for all entrainment samples were fully 
 

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examined, identified, and enumerated without splitting. Entrained fish and shellfish eggs, larvae, 

and juveniles were identified to the lowest practical (distinguishable) taxonomic unit and 

enumerated. Any juvenile fish and shellfish observed in the ichthyoplankton samples were 

included with the counts, but designated as young-of-year (YOY), or juvenile. The total number 

of ichthyoplankton in each sample of a known filtered volume was used to calculate volumebased ichthyoplankton densities (i.e. the number of eggs or larvae per 100 m3

).

3.2 Quality Assurance & Quality Control 

The goal of the QA/QC Plan was to ensure that work performance and resulting data/reports 

were of the highest quality and provided in a cost-effective, scientifically defensible, and timely 

manner. The reliability, accuracy, and truth of results reported were monitored through QA 

procedures and maintained a required level of reliability through QC procedures. 

The sampling coordinator trained all field personnel and performed an on-site QA inspection of 

field procedures during the first sample event. For the impingement sampling, the QA/QC 

inspection program was conducted in the field with the assistance of LSU personnel. All of the 

samples that were collected and processed (i.e. sorting, counting, and identification) were 

checked by another project biologist on-site. A more detailed description of the specific QA/QC 

plan is included in the project SOP. 

3.3 Data Analysis 

The raw number of fish and shellfish present in each impingement and entrainment sample were 

converted to rates or density estimates (number of impinged or entrained fish and shellfish per 

unit volume). Average weekly impingement or entrainment density was used to evaluate 

seasonal occurrence patterns by species. Night and day abundance patterns were also evaluated 

by comparing the average weekly density (which was estimated by using empirical “as sampled” 

data) of the three distinct sample blocks. Seasonal abundance patterns were also evaluated in a 

similar manner. For each of the 52 weeks (June 2006 through May 2007), weekly impingement 

and entrainment densities were calculated based on the fish and shellfish identified during each 

sampling event. To obtain impingement and entrainment densities for weeks that were not 

sampled, the average density from the closest week prior to, and after, that particular nonsampled week was used to determine non-sample week values (see Section 1.1). 

The total raw numbers of impinged or entrained fish and shellfish collected on the Unit 3 screens 

during the 12-month sampling period was extrapolated to flow-based estimates for the entire 

station (Units 1, 2, and 3). Annual flow-based impingement was estimated for each species by 

multiplying the impingement density (number of fish and shellfish per impingement sample 

volume) by the total design flow volume of cooling water for the entire station. Annual flowbased entrainment was also calculated in this manner. The total number of impinged and 
 

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entrained fish and shellfish during the 12-month sampling period were estimated for each species 

within a sample block by multiplying the density (number of fish and shellfish per sample 

volume) by the total volume of cooling water used by the facility during the week, by solving for 

X as shown below: 

(Number of fish collected during 8- hour block or 

100m3

 sample)

= 

(X number of estimated fish collected in a week of 8-hour blocks or 

100m3

 sample)

(Volume of cooling water used during 8-hour block) (Volume of cooling water used during a week of 8- hour blocks)

It is important to note that the same raw number of entrained or impinged individuals do not 

result in the same number of flow-based estimated individuals. The reason for this is that the 

entrainment is sampled from a much smaller proportional volume than impingement. 

Entrainment samples were typically collected from 100m3

 (26,417 gallons) of water during each 

8-hour sample block, whereas an impingement sample is collected from 64,320,080 gallons of 

water flowing through the Unit-3 screens during each 8-hour sample block. Converting the raw 

numbers to densities (number of impinged or entrained fish and shellfish per unit volume) prior 

to extrapolating to annual flows accounts for these differences in sample volumes. For example, 

during this study there were 4 individual freshwater drum impinged during this study, resulting 

in an estimated 64 freshwater drum when the raw numbers are extrapolated based on annual 

flow. For this same species, only 1 freshwater drum larva was collected in the entrainment 

samples. However, because of the volume differences between impingement and entrainment 

sampling methods, this single individual resulted in an estimated 22,385 freshwater drum when 

the raw numbers are extrapolated based on annual flow. 

Also, for an estuarine system, such as the Charenton Canal, the number of fish/shellfish eggs & 

larvae far exceed the number of juvenile or adult stages of fish/shellfish present in the water 

column at any given time (with seasonal variability). 

Two flow scenarios were evaluated with this IM&E data collected at Teche. Scenario-1 included 

only the actual flows from all Units, while Scenario-2 included the 100% design flows of all 

Units. This Scenario-2 assumed continuous full-flow operations during the 12-month study 

period. Results for both scenarios are outlined in Section 6.1. 

3.4 Threatened & Endangered Species 

Certain animal species are protected in Louisiana under the Endangered Species Act (ESA) of 

1973 and Louisiana state regulations. These species are of particular concern because the 

remanded Phase II 316(b) rule required the identification of all threatened, endangered, and other 

protected species that might be susceptible to impingement at the CWIS. The U.S. Fish and 

Wildlife Service (USFWS) and the LDWF, Natural Heritage Program threatened and endangered 
 

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species databases for St. Mary Parish, Louisiana were reviewed. St. Mary Parish has the potential 

to contain eight threatened and endangered aquatic species (Appendix C). However, there were 

no sightings data for this location. Threatened and endangered species lists by parish are created 

based on sightings data and/or the potential for suitable habitat to exist within a parish. Data 

requests were submitted to National Oceanic and Atmospheric Administration (NOAA), 

USFWS, and the Louisiana National Heritage Program for specific sightings data for any of the 

protected species in the vicinity of the Charenton Canal. The USFWS responded to the data 

request in a letter and follow-up phone conversations and emails (personal communication with 

Angela Culpepper, 11/1/2004 to 11/23/2004). Their database does not include sightings data for 

any of the aquatic species within a one mile radius of the Charenton Canal. The Louisiana 

National Heritage Program responded to the data request in a letter. Their database does not 

include any rare, threatened, or endangered species within one mile of the Charenton Canal. The 

NOAA Fisheries office in St. Petersburg, Florida is responsible for aquatic marine threatened 

and endangered species in the Gulf of Mexico, i.e., sea turtles. NOAA Fisheries indicated that no 

specific sightings data for any of the protected sea turtles in the vicinity of the Charenton Canal 

exists (Personal communication with Eric Hawk, 11/5/2004). 
 

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4.0 Impingement Results 

4.1 Abundance, Density, and Percent Occurrence 

A total of 45,352 individual organisms (24,530 fish, 20,822 shellfish) were collected from thirtynine, 24-hour impingement sample events during the 12-month sampling period. Impingement 

sample events were broken into three, 8-hour sample blocks (morning, day, night), for a total of 

117 8-hour sampling blocks. Table 4-1 includes all fish and shellfish impingement collections 

from June 2006 – May 2007. Table 4-2 includes a total count and percent composition of all 

impinged species from June 2006–May 2007. All impingement samples were collected from the 

metal debris basket which held the mesh net liner insert for Unit 3 screens. 

Table 4-1: Species list, in phylogenetic order, of all impinged fish/shellfish collected to date 

at Teche Power Station, and the representation among lifestages (Juvenile, Adult) based on 

specimens identified down to at least the family level, June 2006–May 2007. 

FAMILY/GROUP GENUS-SPECIES1 COMMON NAME 

Anguillidae Anguilla rostrata American eel 

Aphredoderidae Aphredoderus sayanus pirate perch 

Ariidae 

Ariopsis felis hardhead catfish 

Bagre marinus gafftopsail catfish 

Atherinopsidae 

Membras martinica rough silverside 

Menidia beryllina inland silverside 

Bothidae Citharichthys spilopterus bay whiff 

Cambaridae 

cambarid crawfish 

Orconectes hobbsi pontchartrain painted crawfish 

Orconectes spp. orconectid crawfish 

Veticambarus spp. veticambarid crawfish 

Catostomidae Ictiobus cyprinellus bigmouth buffalo 

Centrarchidae 

Lepomis gulosus warmouth 

Lepomis macrochirus bluegill 

Lepomis megalotis longear sunfish 

Lepomis symmetricus bantam sunfish 

Pomoxis annularis white crappie 

Clupeidae 

Dorosoma cepedianum gizzard shad 

Dorosoma petenense threadfin shad 

Alosa chrysochloris skipjack herring 

Brevoortia patronus gulf menhaden 

Decapoda decapod crab 

Eleotridae Dormitator maculatus fat sleeper 

Elopidae Elops saurus ladyfish 

Engraulidae Anchoa mitchilli bay anchovy 

 
 

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FAMILY/GROUP GENUS-SPECIES1 COMMON NAME 

Fundulidae Lucania parva rainwater killifish 

Gobiidae 

Bathygobius soporator frillfin goby 

Ctenogobius shufeldti freshwater goby 

cods 

Gobioides broussonetii violet goby 

Gobiosoma bosc naked goby 

Gobionellus oceanicus highfin goby 

Grapsidae Sesarma cinereum driftline crab 

Ictaluridae

Ameiurus melas black bullhead 

Ameiurus natalis yellow bullhead 

Ictalurus furcatus blue catfish 

Ictalurus punctatus channel catfish 

Pylodictis olivaris flathead catfish 

Lutjanidae Lutjanus griseus -gray snapper 

Moronidae Morone saxatilis striped bass 

Mugilidae Mugil cephalus striped mullet 

Ocypodidae Uca rapax fiddler crab 

Uca subcylindrica laguna madre fiddler 

Palaemonidae Macrobrachium ohione Ohio river shrimp 

Paralichthyidae Paralichthys lethostigma southern flounder 

Penaeidae Farfantepenaeus aztecus brown shrimp 

Poeciliidae Gambusia affinis western mosquitofish 

Polyodontidae Polyodon spathula paddlefish 

Portunidae Callinectes sapidus blue crab 

Sciaenidae 

Aplodinotus grunniens freshwater drum 

Cynoscion arenarius sand seatrout 

Micropogonias undulatus Atlantic croaker 

Sciaenops ocellatus red drum 

Soleidae Trinectes maculates hogchoker 

Syngnathidae Syngnathus scovelli gulf pipefish 

Triglidae Prionotus tribulus bighead searobin 

Xanthidae Rhithropanopeus harrisii mud crab 

Unidentified Shrimp Remains 

32 total families 52 total species ID’s, 2 gensus-only ID’s, 3 family-only 

ID 

Table 4-2: Annual total and percent composition fish/shellfish collected during 

impingement sampling, June 2006–May 2007. 

COMMON NAME Total 

Collected 

PERCENT 

COMPOSITION 

Atlantic croaker 15,126 33.40% 

shrimp remains 6,335 14.00% 

brown shrimp 5,849 12.90% 

Ohio river shrimp 4,374 9.60% 
 

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4-3 

COMMON NAME Total 

Collected 

PERCENT 

COMPOSITION 

blue crab 4,227 9.30% 

bay anchovy 3,519 7.76% 

hogchoker 2,437 5.40% 

sand seatrout 928 2.00% 

bay whiff 886 1.95% 

gulf menhaden 736 1.60% 

threadfin shad 156 0.30% 

blue catfish 126 0.30% 

southern flounder 102 0.20% 

hardhead catfish 99 0.20% 

fat sleeper 85 0.20% 

gizzard shad 44 < 0.1% 

violet goby 44 < 0.1% 

freshwater goby 36 < 0.1% 

mud crab 32 < 0.1% 

gray snapper 22 < 0.1% 

bluegill 20 < 0.1% 

channel catfish 17 < 0.1% 

ladyfish 17 < 0.1% 

striped mullet 16 < 0.1% 

bighead searobin 13 < 0.1% 

highfin goby 12 < 0.1% 

bigmouth buffalo 11 < 0.1% 

inland silverside 10 < 0.1% 

rough silverside 9 < 0.1% 

paddlefish 6 < 0.1% 

American eel 4 < 0.1% 

freshwater drum 4 < 0.1% 

naked goby 4 < 0.1% 

pirate perch 4 < 0.1% 

warmouth 4 < 0.1% 

black bullhead 3 < 0.1% 

frillfin goby 3 < 0.1% 

gulf pipefish 3 < 0.1% 

skipjack herring 3 < 0.1% 

bantam sunfish 2 < 0.1% 

cambarid crawfish 2 < 0.1% 

flathead catfish 2 < 0.1% 

gafftopsail catfish 2 < 0.1% 

orconectid crawfish 2 < 0.1% 

red drum 2 < 0.1% 

yellow bullhead 2 < 0.1% 

cods 1 < 0.1% 

driftline crab 1 < 0.1% 
 

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4-4 

COMMON NAME Total 

Collected 

PERCENT 

COMPOSITION 

fiddler crab 1 < 0.1% 

fiddler crab 1 < 0.1% 

longear 1 < 0.1% 

pontchartrain painted 

crawfish 1 < 0.1% 

rainwater killifish 1 < 0.1% 

decapod crabs 1 < 0.1% 

striped bass 1 < 0.1% 

western mosquitofish 1 < 0.1% 

white crappie 1 < 0.1% 

veticambarid crawfish 1 < 0.1% 

TOTAL COUNT/ 

AVERAGE RATE & 

LENGTH 

45,352 100% 

 

All impinged fish and shellfish combined represented 52 species, belonging to 32 families. 

Overall, Atlantic croaker was the most abundant species and accounted for approximately 33% 

of the total number of fish and shellfish collected, respectively. The condition of impinged fish 

and shellfish was assessed for all measured specimens, according to the criteria described in 

Section 2 of this report. Overall, 41% of impinged specimens were dead and 14% were live 

upon collection (Table 4-3). Another 45% of impinged organisms were not measured, and 

therefore the condition was not assessed. This proportion of specimens not assessed was 

comprised mostly of Atlantic croaker. This species exhibited numbers greater than 100 for 

certain sample events, so only representative samples were measured/ assessed. It should also be 

noted that 100% mortality was assumed for all fish and shellfish impinged on these traveling 

screens on an 8-hour rotation schedule without any fish protection measures in place. 

Overall, of the 45,352 fish/shellfish (dead or live) collected, only 13% exhibited some type of 

damage. The occurrence of headless shrimp was the most common damage observed for 

impinged organisms, resulting in the “unidentified shrimp” category. The only damage criteria 

that occurred was categorized under the “general wound” criteria (code-6), with no specific 

attributes associated with impingement (screen marks, etc.). There was also one blue crab (dead) 

with “black spot” observed on its shell. However, because the crab was already dead and in poor 

condition, the “black spot” observed was most likely a result of decomposition, not necessarily 

related to the black spot disease parasite found in some fish species.
N:\CLIENT\CLECO\Teche\LPDES 316b Submittal\Teche Final IM&E 316b Report4.doc 

4-5

Table 4-3: Assessment of condition for impinged specimens collected, using the criteria described in Sectio

Common Name 

NO 

CONDITION 

RECORDED 

LIVE (no 

damage L) 

LIVE 

(general 

wound L-6) 

LIVE 

TOTAL 

DEAD (no 

damage L) 

DEAD 

(black 

spot D-4) 

DEAD 

(general 

wound D-6) 

DEAD 

(headle

ss D-9) 

Alosa chrysochloris 0 0 0 0 3 0 0 0 Ameiurus melas 0 3 0 3 0 0 0 0 Ameiurus natalis 0 0 0 0 2 0 0 0 Anchoa mitchilli 1,095 13 0 13 2,373 0 38 0 Anguilla rostrata 0 2 0 2 2 0 0 0 Aphredoderus sayanus 0 0 0 0 4 0 0 0 Aplodinotus grunniens 0 0 0 0 4 0 0 0 Ariopsis felis 0 5 0 5 93 0 1 0 Bagre marinus 0 0 0 0 1 0 1 0 Bathygobius soporator 0 0 0 0 3 0 0 0 Brevoortia patronus 442 1 0 1 291 0 2 0 Callinectes sapidus 1,391 2,602 0 2,602 230 1 3 0 Cambaridae 0 1 0 1 1 0 0 0 Citharichthys spilopterus 530 3 0 3 352 0 1 0 Ctenogobius shufeldti 0 15 0 15 21 0 0 0 Cynoscion arenarius 45 4 0 4 876 0 3 0 Decapoda 0 1 0 1 0 00 Dormitator maculatus 0 62 0 62 22 0 1 0 Dorosoma cepedianum 0 0 0 0 41 0 3 0 Dorosoma petenense 0 1 0 1 153 0 2 0 Elops saurus 0 0 0 0 15 0 2 0 Farfantepenaeus aztecus 801 4 0 4 5,044 0 0 0 Gambusia affinis 0 0 0 0 1 0 0 0 Gobiidae 0 0 0 0 1 0 0 0 Gobioides broussonetii 0 16 0 16 20 0 8 0 Gobionellus oceanicus 0 0 0 0 11 0 1 0 Gobiosoma bosc 0 0 0 0 4 0 0 0 
N:\CLIENT\CLECO\Teche\LPDES 316b Submittal\Teche Final IM&E 316b Report4.doc 

4-6

Common Name 

NO 

CONDITION 

RECORDED 

LIVE (no 

damage L) 

LIVE 

(general 

wound L-6) 

LIVE 

TOTAL 

DEAD (no 

damage L) 

DEAD 

(black 

spot D-4) 

DEAD 

(general 

wound D-6) 

DEAD 

(headle

ss D-9) 

Ictalurus furcatus 0 24 1 25 100 0 1 0 Ictalurus punctatus 0 6 0 6 7 0 4 0 Ictiobus cyprinellus 2 0 0 0 7 0 2 0 Lepomis gulosus 0 2 0 2 2 0 0 0 Lepomis macrochirus 0 1 0 1 18 0 1 0 Lepomis megalotis 0 1 0 1 0 0 0 0 Lepomis symmetricus 0 0 0 0 2 0 0 0 Lucania parva 0 0 0 0 1 0 0 0 Lutjanus griseus 0 0 0 0 22 0 0 0 Macrobrachium ohione 1,499 1,852 0 1,852 1,019 0 4 0 Membras martinica 0 0 0 0 8 0 1 0 Menidia beryllina 0 0 0 0 10 0 0 0 Micropogonias undulatus 14,029 13 0 13 1,078 0 6 0 Morone saxatilis 0 0 0 0 1 0 0 0 Mugil cephalus 0 1 0 1 15 0 0 0 Orconectes hobbsi 0 1 0 1 0 0 0 0 Orconectes spp. 1 1 0 1 0 0 0 0 Paralichthys lethostigma 0 11 0 11 87 0 4 0 Polyodon spathula 0 0 0 0 6 0 0 0 Pomoxis annularis 0 0 0 0 1 0 0 0 Prionotus tribulus 0 0 0 0 13 0 0 0 Pylodictis olivaris 0 0 0 0 2 0 0 0 Rhithropanopeus harrisii 0 29 0 29 3 0 0 0 Sciaenops ocellatus 0 0 0 0 2 0 0 0 Sesarma cinereum 0 0 0 0 1 0 0 0 Syngnathus scovelli 0 0 0 0 3 0 0 0 Trinectes maculatus 493 1,657 0 1,657 282 0 5 0 Uca rapax 0 1 0 1 0 0 0 0 Uca subcylindrica 0 0 0 0 1 0 0 0 Unid. Shrimp remains 0 0 0 0 390 0 0 5,945 
N:\CLIENT\CLECO\Teche\LPDES 316b Submittal\Teche Final IM&E 316b Report4.doc 

4-7

Common Name 

NO 

CONDITION 

RECORDED 

LIVE (no 

damage L) 

LIVE 

(general 

wound L-6) 

LIVE 

TOTAL 

DEAD (no 

damage L) 

DEAD 

(black 

spot D-4) 

DEAD 

(general 

wound D-6) 

DEAD 

(headle

ss D-9) 

Veticambarus spp. 0 1 0 1 0 0 0 0 TOTAL 20,328 6,334 1 6,335 12,649 1 94 5,945PERCENT OF TOTAL 44.8% 14.0% 
N:\CLIENT\CLECO\Teche\LPDES 316b Submittal\Teche Final IM&E 316b Report4.doc January 2009 

4-8 

4.1.1 Estimated Annual Impingement 

A total of 765,720 individual fish and shellfish were estimated to be impinged at Teche Power 

Station for the duration of the 12-month sampling period. This impingement estimate assumes 

100% capacity generation with full design flow (253.4 MGD) from Units 1, 2, and 3. Table 4-4 

lists the total estimated numbers of fish and shellfish impinged for all species. This scenario 

provides the basis for the calculation baseline impingement at this facility and will be referred to 

as such throughout the document. 

Over the entire 12-month sampling period, the average estimated design flow impingement was 

approximately 14,726 fish and shellfish per week (ranging from 1,876 to 68,165 per week). In 

terms of flow, this average impingement represents approximately 8.3 fish or shellfish impinged 

for every 1 million gallons of cooling water flow. 

Note that the following sections discuss impingement at Teche Power Station in terms of these 

estimated numbers, compared to the impingement “as sampled” in earlier sections of this report. 
N:\CLIENT\CLECO\Teche\LPDES 316b Submittal\Teche Final IM&E 316b Report4.doc 

4-9 

Table 4-4: Estimated ANNUAL impingement by species at Teche Power Station based on full design flow 

baseline) operation, June 2006–May 2007. 

SPECIES/TAXA COMMON NAME 

TOTAL NUMBER COLLECTED 

ANNUAL ESTIMATED IMPINGEMENT (MORNING) 

ANNUAL ESTIMATED IMPINGEMENT (DAY) 

ANNESTIIMPI(NIG

Alosa chrysochloris skipjack herring 3 0 37 

Ameiurus melas black bullhead 3 0 37 

Ameiurus natalis yellow bullhead 2 0 0 

Anchoa mitchilli bay anchovy 3,519 10,895 20,153 

Anguilla rostrata American eel 4 37 37 

Aphredoderus sayanus pirate perch 4 9 0 

Aplodinotus grunniens freshwater drum 4 0 37 Ariopsis felis hardhead catfish 99 257 386 

Bagre marinus gafftopsail catfish 2 0 18 Bathygobius soporator frillfin goby 3 9 0 Brevoortia patronus gulf menhaden 736 1,025 10,031 

Callinectes sapidus blue crab 4,227 16,641 19,266 

Cambaridae cambarid crawfish 2 0 37 

Citharichthys spilopterus bay whiff 886 2,538 322 

Ctenogobius shufeldti freshwater goby 36 432 74 

Cynoscion arenarius sand seatrout 928 2,487 2,124 

Decapoda decapod crabs 1 14 0 

Dormitator maculatus fat sleeper 85 193 92 

Dorosoma cepedianum gizzard shad 44 69 377 

Dorosoma petenense threadfin shad 156 496 1,241 

Elops saurus ladyfish 17 14 83 

Farfantepenaeus aztecus brown shrimp 5,849 25,054 15,979 

Gambusia affinis western mosquitofish 1 0 0 

Gobiidae cods 1 18 0 Gobioides broussonetii violet goby 44 285 285 

Gobionellus oceanicus highfin goby 12 110 110 Gobiosoma bosc naked goby 4 37 110 

Ictalurus furcatus blue catfish 126 561 717 

Ictalurus punctatus channel catfish 17 92 165 
SPECIES/TAXA COMMON NAME 

TOTAL NUMBER COLLECTED 

ANNUAL ESTIMATED IMPINGEMENT (MORNING) 

ANNUAL ESTIMATED IMPINGEMENT (DAY) 

ANNESTIIMPI(NIG

N:\CLIENT\CLECO\Teche\LPDES 316b Submittal\Teche Final IM&E 316b Report4.doc 

4-10 

Ictiobus cyprinellus bigmouth buffalo 11 55 92 Lepomis gulosus warmouth 4 74 37 Lepomis macrochirus bluegill 20 138 285 Lepomis megalotis longear 1 0 37 

Lepomis symmetricus bantam sunfish 2 0 74 

Lucania parva rainwater killifish 1 0 0 

Lutjanus griseus gray snapper 22 184 74 Macrobrachium ohione Ohio river shrimp 4,374 19,818 25,771 Membras martinica rough silverside 9 120 18 Menidia beryllina inland silverside 10 55 0 Micropogonias undulatus Atlantic croaker 15,126 57,895 58,598 Morone saxatilis striped bass 1 0 0 

Mugil cephalus striped mullet 16 193 74 Orconectes hobbsi 

pontchartrain painted crawfish 1 37 0 

Orconectes spp. orconectid crawfish 2 18 0 

Paralichthys lethostigma southern flounder 102 772 552 

Polyodon spathula paddlefish 6 0 92 Pomoxis annularis white crappie 1 0 0 

Prionotus tribulus bighead searobin 13 74 18 Pylodictis olivaris flathead catfish 2 18 0 

Rhithropanopeus harrisii mud crab 32 368 598 

Sciaenops ocellatus red drum 2 18 0 

Sesarma cinereum driftline crab 1 0 0 

Syngnathus scovelli gulf pipefish 3 18 28 

Trinectes maculatus hogchoker 2,437 14,347 8,270 Uca rapax fiddler crab (rapax) 1 37 0 

Uca subcylindrica 

fiddler crab (subcyclindrica) 1 0 14 

 Unid. Shrimp remains 6,335 6,335 28,630 

Veticambarus spp. veticambarid crawfish 1 0 18 

TOTAL 45,352 184,143 182,391 3
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4-11 

4.1.2 Seasonal & Diel Patterns of Impingement 

The average estimated impingement at Teche Power Station was 14,726 fish and shellfish per 

week (Figure 4-1) and strongly driven by higher abundances of Atlantic croaker (Figure 4-2). 

The 11-week period from 04 June 2006 to 23 July 2006 accounted for approximately 36% of the 

total impingement for the entire year. The 8-week period from 10 Sept 2006 to 29 October 2006 

accounted for approximately 36% of the total impingement for the entire year. The 4-week 

period from 06 May 2007 to 27 May 2007 accounted for approximately 11% of the total 

impingement for the entire year. During the week of 17 Sept 2006, weekly impingement peaked 

at 68,165 fish and shellfish per week. During the sample weeks of 04 June 2006 to 23 July 2006, 

weekly total impingement averaged 34,836 fish and shellfish per week and during the sample 

weeks of 10 Sept 2006 to 29 October 2006; impingement averaged 34,063 fish and shellfish per 

week. During the sample weeks of 06 May 2007 to 27 May 2007, impingement averaged 20,356 

fish and shellfish per week. 

Overall, annual impingement totals were highest during the night (399,186) sampling blocks than 

during the morning (184,143) and day (182,391) sampling blocks. The day and night sampling 

periods exhibited similar impingements rates. A quantitative assessment of diel patterns of 

impingement from these data however is difficult because the sampling blocks overlap twilight 

periods (sunrise/sunset) which strongly influence fish behavior and abundances throughout a 24-

hour period. 

Seasonal variation in ambient water quality conditions may have also influenced the patterns of 

impingement observed at Teche. One of the peak impingement periods during July 2006 

occurred during a period of extremely low dissolved oxygen (D.O.) of 1.3 mg/L (see Figure 9-

2). It is likely that this period of low D.O. during the summer may have contributed to high 

levels of impingement, particularly for Atlantic croaker, although there is no site-specific data to 

support this correlation. In this scenario, a low D.O. fish kill unrelated to the presence of the 

intake structure may have increased the loading of impinged fish that entered the intake. D. O. 

levels were improving by mid September and October when two other peaks in impingement 

abundance occurred. However, two distinct peaks in salinity coincided with increased 

impingement during this period (see Figure 9-2). Shrimp were the most abundant organism 

during these distinct periods of increased salinity. It is likely that the abundance of shrimp 

(brown shrimp, Ohio river shrimp, unidentified shrimp) was related to increased salinity in the 

vicinity of Teche Power Station during the fall season; a period when brown shrimp typically 

exhibit movements out of the estuary as sub-adults (R. Harlan, LSU-SRNR personal 

communication 11/9/2006). Furthermore, based on this life history information and the timing 

of abundance, it is also likely that the majority of the “unidentified” shrimp (headless) were 

brown shrimp which tend to become more easily damaged than Ohio river shrimp (R. Harlan, 

LSU-SRNR personal communication 1/5/2007). 
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4-12 

Figure 4-1: Estimated impingement rate (# of fish/shellfish per week) at Teche Power 

Station, June 2006-May 2007. 

Figure 4-2: Seasonal patterns of impingement rates (# of fish/shellfish per week) for the 

7 most abundant fish/shellfish impinged at Teche Power Station, June 2006 – May 2007. 
N:\CLIENT\CLECO\Teche\LPDES 316b Submittal\Teche Final IM&E 316b Report4.doc January 2009 

5-1 

5.0 Entrainment Results 

5.1 Abundance, Density, and Percent Occurrence 

A total of 942 eggs, 203 larvae, and 12,828 juveniles were collected from 117 entrainment 

samples during the sampling period (6 June 2006 to 22 May 2007). All ichthyoplankton 

combined represented 28 species belonging to 21 families (Table 5-1). Eggs that could not be 

identified due to ambiguous characteristics or damage were listed as “unidentified.” 

The decapod crab/shrimp were the most abundant species in the larval stage, accounting for 

approximately 39% of the entrained larvae species. The most abundant species in the juvenile 

stage was the mysid shrimp, comprising 56% of the entrained juvenile species (Table 5-2). All 

species represented in the entrainment samples also occurred in the impingement samples with 

the exception of banded drum, (Larimus fasciatus), mysid/opossum shrimp (Taphromysis 

louisianae), least killifish (Heterandria formosa), fairy shrimp (Phyllopodous branchiopoda), 

and mantis shrimp (Squilla empusa). The absence of these species from the entrainment samples 

may be attributed to the physical and hydrological characteristics of the CWIS as well as life 

history traits of different species (demersal, pelagic, or adhesive eggs or larval dispersal in the 

water column). 

Table 5-1: Species list, in phylogenetic order, of all entrained fish/shellfish collected to date 

at Teche Power Station, and the representation among lifestages (Egg, Larvae, Juvenile, 

Adult) based on sample collections for those specimens identified down to at least the 

family level, June 2006–May 2007. 

FAMILY/GROUP GENUS-SPECIES COMMON NAME LIFESTAGES REPRESENTED

Anguillidae Anguilla rostrata American eel J 

Ariidae Ariopsis felis hardhead catfish J 

Atherinopsidae Menidia beryllina inland silverside L 

Bothidae Citharichthys spilopterus bay whiff J 

Catostomidae suckers L 

Lepomis spp. lepomis L,J 

Clupeidae Dorosoma cepedianum gizzard shad L 

Dorosoma spp. dorosoma L 

Brevoortia patronus gulf menhaden J 

Dorosoma petenense threadfin shad J 

Cyprinidae carps and minnows L 

Cyprinodontidae Fundulus spp. fundulus L,J 

Decapoda decapod crabs L 

Elopidae Elops saurus ladyfish L 

Engraulidae Anchoa mitchilli bay anchovy J 
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5-2 

FAMILY/GROUP GENUS-SPECIES COMMON NAME LIFESTAGES REPRESENTED

Gobiidae cods L,J 

Ctenogobius shufeldti freshwater goby J 

Gobioides broussonetii violet goby J 

Gobiosoma bosc naked goby J 

Gobiosoma robustum code goby 

Gobiosoma spp. unidentified gobies L,J 

Ictaluridae Ictalurus spp. ictalurid catfish L 

ictalurid catfish J 

Ictalurus furcatus blue catfish J 

Ictalurus punctatus channel catfish J 

Palaemonidae Macrobrachium ohione river shrimp J 

Penaeidae Farfantepenaeus aztecus brown shrimp J 

Poeciliidae Heterandria formosa least killifish J 

Portunidae Callinectes sapidus blue crab J 

Sciaenidae Aplodinotus grunniens freshwater drum L,J 

drums and croakers L,J 

Cynoscion arenarius sand seatrout J 

Larimus fasciatus banded drum J 

Micropogonias undulatus Atlantic croaker J 

Soleidae Trinectes maculatus hogchoker J 

Squillidae Squilla empusa mantis shrimp J 

Phyllopodous branchiopoda fairy shrimp J 

Syngnathidae Syngnathus scovelli gulf pipefish L,J 

Unidentified fish remains L,J 

Mysidae Taphromysis louisianae mysid shrimp J 

Unidentified shrimp remains J 

Unidentified egg E 

21 total families 28 species ID’s, 5 genus-only ID’s, 6 family-only ID’s 

Table 5-2: Total annual collected and percent composition for fish/shellfish collected 

during entrainment samples, June 2006–May 2007. 

COMMON NAME 

PERCENT COMPOSITION 

UNIT 3 ENTRAINMENT 

JUVENILE LARVAE EGGS 

American eel 0.2% 

Atlantic croaker < 0.0% 

banded drum < 0.0% 

bay anchovy 32.1% 
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5-3 

COMMON NAME 

PERCENT COMPOSITION 

UNIT 3 ENTRAINMENT 

JUVENILE LARVAE EGGS 

bay whiff < 0.0% 

blue catfish < 0.0% 

blue crab 0.8% 

brown shrimp < 0.0% 

carps and minnows 0.5% 

channel catfish 

code goby < 0.0% 

cods < 0.0% 24.1% 

decapod crabs 0.5% 39% 

dorosoma 3.9% 

drums and croakers 0.5% 

fairy shrimp 0.2% 

freshwater drum < 0.0% 0.5% 

freshwater goby < 0.0% 

fundulus < 0.0% 0.5% 

gizzard shad < 0.0% 1.0% 

gulf menhaden 

gulf pipefish 3.6% 0.5% 

hardhead catfish < 0.0% 

hogchoker < 0.0% 

ictalurid catfish 0.2% 0.5% 

ictalurid catfish 

inland silverside < 0.0% 0.5% 

ladyfish 1.0% 

least killifish 

lepomis < 0.0% 1.0% 

mantis shrimp < 0.0% 

mysid shrimp 3.1% 

naked goby 56.1% 

Ohio river shrimp < 0.0% 

sand seatrout 34.1% 
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5-4 

COMMON NAME 

PERCENT COMPOSITION 

UNIT 3 ENTRAINMENT 

JUVENILE LARVAE EGGS 

Suckers < 0.0% 0.5% 

threadfin shad 

unidentified fish 

remains 1.2% 25.6% 

unidentified shrimp 

remains < 0.0% 

unidentified egg 100.0% 

unidentified gobies < 0.0% 

violet goby < 0.0% 

TOTALS 100% 100% 100% 

5.1.1 Estimated Annual Entrainment 

A total of 369,594,332 fish and shellfish (eggs, larvae, juveniles) were estimated to be entrained 

at Teche Power Station during the duration of the 12-month sampling period (6 June 2006 to 22 

May 2007). This entrainment estimate assumes 100% capacity generation with full design flow 

(253.4 MGD) from Units 1, 2, and 3. Table 5-3 lists the total estimated numbers of fish and 

shellfish entrained for all species. This scenario provides the basis for the calculation baseline 

entrainment at this facility and will be referred to as such throughout the document. 

Weekly total estimated entrainment at Teche Power Station, over the entire 12-month sampling 

period, averaged an estimated design flow entrainment of 7,107,583 fish and shellfish per week 

(ranging from 179,083 to 48,262,947 per week). 

Note that the following sections discuss entrainment at Teche Power Station in terms of these 

estimated numbers, compared to the entrainment “as sampled” in earlier sections of this report. 
Table 5-3: Estimated ANNUAL entrainment by species at Teche Power Station based on full station (calcu

operation, June 2006–May 2007. 

LIFESTAGE SPECIES/TAXA COMMON NAME 

TOTAL 

NUMBER 

COLLECTED 

ANNUAL 

ESTIMATED 

ENTRAINMENT 

(MORNING) 

ANNUAL 

ESTIMATED 

ENTRAINMENT 

(DAY) 

ANN

ESTIM

ENTRAI

(NIG

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5-5 

EGG Unidentified egg unidentified egg 942 4,342,770 156,698 18

Egg Total 942 4,342,770 156,698 18

LARVAE 

Aplodinotus grunniens freshwater drum 1 0 0 

Catostomidae suckers 1 0 22,385 

Cyprinidae carps and minnows 1 0 22,385 

Decapoda decapod crabs 80 1,130,463 537,250 

Dorosoma cepedianum gizzard shad 2 0 0 

Dorosoma spp. dorosoma 8 22,385 134,312 

Elops saurus ladyfish 2 44,771 22,385 

Fundulus spp. fundulus 1 22,385 0 

Gobiidae cods 49 492,479 514,864 Ictalurus spp. ictalurid catfish 1 0 22,385 

Lepomis spp. lepomis 2 44,771 22,385 

Menidia beryllina inland silverside 1 0 22,385 

Sciaenidae drums and croakers 1 0 0 

Syngnathus scovelli gulf pipefish 1 44,771 0 

UNID. FISH REMAINS 52 179,083 1,275,968 

Larvae Total 203 1,981,109 2,596,708 

JUVENILE 

Anchoa mitchilli bay anchovy 4,118 10,778,576 17,628,511 85

Anguilla rostrata American eel 25 134,312 246,240 

Aplodinotus grunniens freshwater drum 2 0 22,385 

Ariopsis felis hardhead catfish 3 0 0 

Brevoortia patronus gulf menhaden 460 1,477,437 4,409,926 5

Callinectes sapidus blue crab 100 526,057 313,396 1

Citharichthys spilopterus bay whiff 6 0 22,385 

Ctenogobius shufeldti freshwater goby 1 0 33,578 

Cynoscion arenarius sand seatrout 3 0 0 
Table 5-3: Estimated ANNUAL entrainment by species at Teche Power Station based on full station (calcu

operation, June 2006–May 2007. 

LIFESTAGE SPECIES/TAXA COMMON NAME 

TOTAL 

NUMBER 

COLLECTED 

ANNUAL 

ESTIMATED 

ENTRAINMENT 

(MORNING) 

ANNUAL 

ESTIMATED 

ENTRAINMENT 

(DAY) 

ANN

ESTIM

ENTRAI

(NIG

N:\CLIENT\CLECO\Teche\LPDES 316b Submittal\Teche Final IM&E 316b Report4.doc 

5-6

Dorosoma petenense threadfin shad 1 0 22,385 

Farfantepenaeus aztecus brown shrimp 6 89,542 0 

Fundulus spp. f 1 0 33,578 

Gobiidae gobies 69 335,781 291,010 1Gobioides broussonetii violet goby 3 0 0 

Gobiosoma bosc naked goby 28 246,240 44,771 

Gobiosoma robustum code goby 0 0 0 

Gobiosoma spp. unidentified goby 6 0 0 

Heterandria formosa least killifish 2 0 33,578 

Ictaluridae ictalurid catfish 1 33,578 0 

Ictalurus furcatus blue catfish 1 0 0 

Ictalurus punctatus channel catfish 1 0 0 

Larimus fasciatus banded drum 1 0 0 

Lepomis spp. Lepomis 1 0 0 

Macrobrachium ohione ohio river shrimp 309 481,286 682,755 9

Micropogonias undulatus Atlantic croaker 2 22,385 22,385 

Phyllopodous branchiopoda fairy shrimp 4 89,542 0 

Sciaenidae drums and croakers 23 335,781 44,771 

Squilla empusa mantis shrimp 397 2,305,697 2,764,598 7

Syngnathus scovelli gulf pipefish 2 22,385 0 

Taphromysis louisianae mysid shrimp 7,219 43,528,432 34,921,242 105

Trinectes maculatus hogchoker 29 44,771 0 1

UNID. FISH REMAINS 2 44,771 22,385 

UNID. SHRIMP REMAINS 2 0 0 

Juvenile Total 12,828 60,496,574 61,559,881 218

GRAND TOTAL ENTRAINMENT 13,973 66,820,452 64,313,286 238,46
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5-7 

5.1.2 Seasonal & Diel Patterns of Entrainment 

Overall entrainment densities were highest during fall and spring; specifically October 2006 and 

May 2007. The total combined entrainment in October 2006 and May 2007 accounted for 

approximately 52% of the total entrainment for the entire year. Juveniles peaked at 

approximately 47.3 million during one week in the fall, and 41.1 million during one week in the 

spring (Figure 5-1). Eggs peaked at approximately 8.4 million during one week in spring only, 

while larvae remained largely absent from the intake throughout the year, with only minor 

abundances during one week in June (1.1 million) and another week in October (0.9 million). 

Seasonal patterns of species abundance patterns were observed for eggs, larvae and juveniles. 

Unidentified mysid shrimp (juvenile) accounted for the majority of the peak in abundance from 

October 2006 (67%) to May 2007 (77%) (Figure 5-2). 

Figure 5-1: Estimated entrainment rate for eggs, larvae, & juvenile (# of fish/shellfish per 

week) at Teche Power Station, June 2006–May 2007. 

The most abundant species in the egg stage were the unidentified eggs, which accounted for 

approximately 100% of the entrained egg species. Some fish and shellfish were “unidentified” 

due to ambiguous characteristics or damage to the organism. The most abundant species in the 

larval stage were the unidentified decapod crabs, which accounted for approximately 39% of the 

entrained larvae species. The most abundant species in the juvenile stage were mysid shrimp, 

which accounted for approximately 56% of the entrained juvenile species. 
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5-8 

Figure 5-2: Seasonal patterns of entrainment rates (# of fish/shellfish per week) with full 

pump design flow at Teche Power Station, June 2006–May 2007. 
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6-1 

6.0 Entrainment & Impingement Impacts 

• The total estimated number of individual fish and shellfish eggs entrained for the 

duration of the 12-month sampling period (June 2006 – May 2007) was: 

- 15.30 million for actual station flows (Scenario-1) 

- 23.47 million for 100% design capacity station flows (Scenario-2) 

• The total estimated number of individual fish and shellfish larvae entrained for 

the duration of the 12-month sampling period (June 2006 – May 2007) was: 

- 3.23 million for actual station flows (Scenario-1) 

- 5.29 million for 100% design capacity station flows (Scenario-2) 

• The total estimated number of individual fish and shellfish juveniles entrained for 

the duration of the 12-month sampling period (June 2006 – May 2007) was: 

- 178.14 million for actual station flows (Scenario-1) 

- 340.83 million for 100% design capacity station flows (Scenario-2) 

• The total estimated number of individual fish and shellfish (juvenile, adult) 

impinged for the duration of the 12-month sampling period (June 2006 – May 

2007) was: 

- 417,722 for actual station flows (Scenario-1) 

- 765,720 for 100% design capacity station flows (Scenario-2). 

Tables 6-1 and 6-2 list the total estimated numbers of organisms entrained and impinged for all 

species under both operational flow scenarios. The estimated weekly impingement under both 

scenarios of impingement and entrainment impacts are based on the densities of all lifestages of 

fish and shellfish collected during the sampling period and actual flow data (or design flow 

capacity) for cooling water used at Teche Power Station. Scenario-1 takes in account all times 

during the 12-month sampling period when the facility did not draw any cooling water from the 

Charenton Canal including scheduled outages, standby periods, and single circulating water 

pump operations. Scenario-2 assumes 100% design flow operation, as permitted, year-round. 
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6-2 

Table 6-1: Estimated total entrainment and impingement by species at Teche Power Station based on actu3 cooling water flow during the 12-month monitoring period, June 2006–May 2007 (Scenario-1). 

SCENARIO-1 TOTAL IMPACT ENTRAINMENT IM

SPECIES COMMON NAME EGG LARVAE JUVENILE YOAlosa chrysochloris skipjack herring Ameiurus melas black bullhead Ameiurus natalis yellow bullhead Anchoa mitchilli bay anchovy 61,502,245 Anguilla rostrata American eel 484,702 Aphredoderus sayanus pirate perch Aplodinotus grunniens freshwater drum 8,631 17,254 Ariopsis felis hardhead catfish 51,143 Bagre marinus gafftopsail catfish Bathygobius soporator frillfin goby Brevoortia patronus gulf menhaden 5,031,044 Callinectes sapidus blue crab 1,089,065 Cambaridae cambarid crawfish Catostomidae suckers 17,061 Citharichthys spilopterus bay whiff 113,013 Ctenogobius shufeldti freshwater goby 13,081 Cynoscion arenarius sand seatrout 49,951 Cyprinidae carps and minnows 8,631 Decapoda decapod crabs 1,413,307 Dormitator maculates fat sleeper 
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6-3 

SCENARIO-1 TOTAL IMPACT ENTRAINMENT IM

SPECIES COMMON NAME EGG LARVAE JUVENILE YODorosoma cepedianum gizzard shad 24,145 Dorosoma petenense threadfin shad 12,072 Dorosoma spp. dorosoma 66,449 Elops saurus ladyfish 32,490 Farfantepenaeus aztecus brown shrimp 46,138 Fundulus spp. fundulus 10,713 20,427 Gambusia affinis western mosquitofish Gobiidae cods 409,964 839,076 Gobioides broussonetii violet goby 95,517 Gobionellus oceanicus highfin goby Gobiosoma bosc naked goby 307,080 Gobiosoma robustum code goby 37,850 Gobiosoma spp. unidentified goby 60,526 Heterandria Formosa least killifish 30,529 Ictaluridae ictalurid catfish 12,843 Ictalurus furcatus blue catfish 20,427 Ictalurus punctatus channel catfish 8,674 Ictalurus spp. ictalurid catfish 17,061 Ictiobus cyprinellus bigmouth buffalo Larimus fasciatus banded drum 10,102 Lepomis gulosus warmouth Lepomis macrochirus bluegill 
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6-4 

SCENARIO-1 TOTAL IMPACT ENTRAINMENT IM

SPECIES COMMON NAME EGG LARVAE JUVENILE YOLepomis megalotis longear Lepomis spp. lepomis 51,148 31,073 Lepomis symmetricus bantam sunfish Lucania parva rainwater killifish Lutjanus griseus gray snapper Macrobrachium ohione Ohio river shrimp 7,126,335 Membras martinica rough silverside Menidia beryllina inland silverside 17,061 Micropogonias undulatus Atlantic croaker 23,911 Morone saxatilis striped bass Mugil cephalus striped mullet Orconectes hobbsi Pontchartrain painted crawfish Orconectes spp. orconectid crawfish Paralichthys lethostigma southern flounder Phyllopodous branchiopoda fairy shrimp 28,203 Polyodon spathula paddlefish Pomoxis annularis white crappie Prionotus tribulus bighead searobin Pylodictis olivaris flathead catfish Rhithropanopeus harrisii mud crab Sciaenidae drums and croakers 9,049 174,228 Sciaenops ocellatus red drum 
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6-5 

SCENARIO-1 TOTAL IMPACT ENTRAINMENT IM

SPECIES COMMON NAME EGG LARVAE JUVENILE YOSesarma cinereum driftline crab Squilla empusa mantis shrimp 9,111,272 Syngnathus scovelli gulf pipefish 34,087 18,281 Taphromysis louisianae mysid shrimp 91,047,395 Trinectes maculatus hogchoker 752,992 Uca rapax fiddler crab (rapax) Uca subcylindrica fiddler crab (subcyclindrica) 

Unidentified egg 15,303,743 

Unidentified fish remains 1,107,533 45,391 

Unidentified shrimp remains 25,686 

Veticambarus sp. Veticambarid crawfish 

TOTAL 15,303,743 3,227,331 178,143,537 
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6-6 

Table 6-2: Estimated total entrainment and impingement by species at Teche Power Station based on 100Units 1, 2, & 3 during the 12-month monitoring period, June 2006–May 2007 (Scenario-2). 

SCENARIO-2 TOTAL IMPACT ENTRAINMENT IM

SPECIES COMMON NAME EGG LARVAE JUVENILE YOAlosa chrysochloris skipjack herring Ameiurus melas black bullhead Ameiurus natalis yellow bullhead Anchoa mitchilli bay anchovy 113,527,613 Anguilla rostrata American eel 805,875 Aphredoderus sayanus pirate perch Aplodinotus grunniens freshwater drum 22,385 44,771 Ariopsis felis hardhead catfish 78,349 Bagre marinus gafftopsail catfish Bathygobius soporator frillfin goby Brevoortia patronus gulf menhaden 11,147,935 Callinectes sapidus blue crab 2,361,661 Cambaridae cambarid crawfish Catostomidae suckers 22,385 Citharichthys spilopterus bay whiff 156,698 Ctenogobius shufeldti freshwater goby 33,578 Cynoscion arenarius sand seatrout 89,542 Cyprinidae carps and minnows 22,385 Decapoda decapod crabs 1,936,338 Dormitator maculatus fat sleeper 
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6-7 

SCENARIO-2 TOTAL IMPACT ENTRAINMENT IM

SPECIES COMMON NAME EGG LARVAE JUVENILE YODorosoma cepedianum gizzard shad 44,771 Dorosoma petenense threadfin shad 22,385 Dorosoma spp. dorosoma 179,083 Elops saurus ladyfish 67,156 Farfantepenaeus aztecus brown shrimp 134,312 Fundulus spp. fundulus 22,385 33,578 Gambusia affinis western mosquitofish Gobiidae cods 1,096,885 1,701,291 Gobioides broussonetii violet goby 134,312 Gobionellus oceanicus highfin goby Gobiosoma bosc naked goby 794,682 Gobiosoma robustum code goby 89,542 Gobiosoma spp. unidentified goby 134,312 Heterandria formosa last killifish 55,964 Ictaluridae ictalurid catfish 33,578 Ictalurus furcatus blue catfish 33,578 Ictalurus punctatus channel catfish 22,385 Ictalurus spp. ictalurid catfish 22,385 Ictiobus cyprinellus bigmouth buffalo Larimus fasciatus banded drum 22,385 Lepomis gulosus warmouth Lepomis macrochirus bluegill 
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6-8 

SCENARIO-2 TOTAL IMPACT ENTRAINMENT IM

SPECIES COMMON NAME EGG LARVAE JUVENILE YOLepomis megalotis longear Lepomis spp. lepomis 67,156 44,771 Lepomis symmetricus bantam sunfish Lucania parva rainwater killifish Lutjanus griseus gray snapper Macrobrachium ohione Ohio river shrimp 10,800,961 Membras martinica rough silverside Menidia beryllina inland silverside 22,385 Micropogonias undulatus Atlantic croaker 44,771 Morone saxatilis striped bass Mugil cephalus striped mullet Orconectes hobbsi pontchartrain painted crawfish Orconectes spp. orconectid crawfish Paralichthys lethostigma southern flounder Phyllopodous branchiopoda fairy shrimp 89,542 Polyodon spathula paddlefish Pomoxis annularis white crappie Prionotus tribulus bighead searobin Pylodictis olivaris flathead catfish Rhithropanopeus harrisii mud crab Sciaenidae drums and croakers 22,385 537,250 Sciaenops ocellatus red drum 
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6-9 

SCENARIO-2 TOTAL IMPACT ENTRAINMENT IM

SPECIES COMMON NAME EGG LARVAE JUVENILE YOSesarma cinereum driftline crab Squilla empusa mantis shrimp 12,311,976 Syngnathus scovelli gulf pipefish 44,771 44,771 Taphromysis louisianae mysid shrimp 184,254,320 Trinectes maculatus hogchoker 1,108,078 Uca rapax fiddler crab (rapax) Uca subcylindrica fiddler crab (subcyclindrica) 

Unidentified egg 23,471,104 

Unidentified fish remains 1,701,291 67, 156 

Unidentified shrimp remains 67,156 

Veticambarus sp. Veticambarid crawfish 

TOTAL 23,471,104 5,294,150 340,829,079 
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7-1 

7.0 IM & E Lights On/ Lights Off Sampling 

A sub-study was conducted to evaluate the potential effect of outdoor lighting in the vicinity of 

the cooling water intake structure on IM&E at Teche Power Station. Comparisons were made 

between the “lights-off” treatment group of samples and the “lights-on” control group of 

samples. A total of eight 24-hour routine/baseline IM&E samples were collected with the “lights 

on” in conjunction with eight 24-hour routine/baseline IM&E samples collected with the “lights 

off” (Table 7-1). This study occurred during the last two months (April 2007 and May 2007) of 

the 12-month sampling, June 2006 – May 2007. 

Table 7-1: Lights on/ lights off sampling periods at Teche Power Station, April 2007–May 

2007. 

SAMPLING 

BLOCK/SUB-BLOCK 

COMBINATION

TREATMENT

COMMENTS LIGHT NO-LIGHT

8 hrs night C-2 & A-1 combined C-2 & A-1 combined Compares combined sub-sampling blocks 

(between 22:00-06:00). 

C block 

8 hrs evening/night C C Compares baseline sampling times between 18:00-02:00 

A block 

8 hrs night/morning A A Compares baseline sampling times between 02:00-10:00 

A & C blocks 

16 hrs 

evening/night/morning 

A & C A & C Compares baseline sampling times between 

18:00-10:00 

7.1 Entrainment Light/ No Light Analysis 

After analyzing all life stages in the combined C and A entrainment light/no light sample, 

comparable differences were recognizable. Juvenile bay anchovy, gulf menhaden, and gulf 

pipefish exhibited the largest increase (based on numeric data) in entrainment abundance during 

“no-light” sampling (65%, 62%, and 57%, respectively) (Appendix D). 

7.2 Impingement Light/ No Light Analysis 

Bay anchovy and river shrimp exhibited the largest decrease (based on numeric data) in 

impingement abundance during “no-light” sampling (37% and 84% respectively). Gulf 

menhaden, Atlantic croaker, and hogchoker exhibited the largest increase (based on numeric 

data) in impingement abundance during “no-light sampling (47% and 84% respectively). A few 

other species although small in number were found in the in either the “light” or “no-light” 

sampling period. Highfin goby, clown goby, striped bass, freshwater drum, spotted seatrout, 

brown shrimp, golden shiner, fairy shrimp, and spot (often mistaken for Atlantic croaker) were 

found only in the “no-light” sampling, whereas bigmouth buffalo, violet goby, rainwater 
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7-2 

killifish, striped mullet, flathead catfish, gulf pipefish, brown shrimp, pirate perch, and fiddler 

crab were only found in the “light” sampling. 

7.4 Tidal Flow Conditions and Effects on Impingement & Entrainment 

The Charenton Canal is located in a coastal area with a hydraulic connection to the Gulf of 

Mexico. This water level of the Charenton Canal is subject to tidal exchange, wind activity, and 

variable freshwater input which affect water quality parameters such as D.O. and salinity. These 

variable conditions were likely a factor in the observed fish and shellfish abundances during this 

study. 

During the sample week of May 15, 2007, impingement and entrainment densities were 

substantially greater than other sample weeks during the lights on/lights off sampling; possibly 

due to a previous rainfall and tidal flow conditions. A total of 4,580 entrained organisms were 

collected during this sample event representing 95% of all entrainment collected during the lights 

on/lights off sampling during, April 2007 and May 2007. A total of 4,880 impinged organisms 

were collected during this sample event representing 86% of all impingement collected during 

the lights on/lights off sampling during April 2007 and May 2007. 

7.5 Results 

During the study, mean impingement and entrainment (all stages – egg, larvae, juvenile, and 

adult) were higher during all “no-light” sampling blocks compared to the same periods of “light” 

sampling blocks. There was no apparent mean difference in impingement or entrainment 

between lights-on vs. lights off during this short two month study. However, a more intensive 

study, targeting periods of peak abundances of impingement and entrainment, may reveal 

substantial differences. 
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8-1 

8.0 Equivalent Adult Loss 

Equivalent adult loss (EAL) models have been developed over the past 30 years (Goodyear 

1978, Horst 1980, and others) from numerous impact assessments that allow for comparisons of 

the impact of power plants to other known sources of fish population impacts (natural mortality, 

commercial/recreational fishing, etc.). The raw numbers of fish eggs and larvae that are entrained 

in cooling water intake structures are quite large on an annual basis. However, the naturally high 

mortalities of these life stages of fish and shellfish require that a similar “currency” is used to 

compare the relative impacts of the CWIS on adult fish populations in the source water. Age 

specific mortality rates are required to convert the raw entrainment and impingement numbers 

into age-1 equivalents. While these mortality rates are obtained from published reports, there are 

inherent assumptions and sources of variability built into these rates (e.g., inter-annual variation). 

Another required assumption of this model is that the fish population is stable (neither increasing 

nor decreasing) and stationary. Furthermore, a host of density dependent factors (e.g., decreased 

fecundity with increased population size), which regulate fish populations in the natural 

environment, are not incorporated into the equivalent adult model. 

The numerous assumptions built into the model result in a conservative estimate of the “worstcase scenario” in terms of the number of equivalent adults impacted. As with any type of 

ecological modeling, the quality of the resulting numbers is only as good as the data used in the 

model. Therefore, the age-1 equivalent adult estimates in this report should be used with caution 

in comparison to specific known/unknown “real world” situations that affect fish populations, 

including density dependence, inter-annual variation, disease, and other factors that can affect 

the standing crop of adult fish. 

The species impinged at Teche Power Station that accounted for approximately 92% of the 

impingement and were evaluated for the age-1 equivalent analysis consists of: 

• Atlantic croaker 

• bay anchovy 

• blue crab 

• brown shrimp 

• hog choker 

• Ohio river shrimp 

• unidentified shrimp. 

 

The species entrained at Teche Power Station that accounted for approximately 88% of the 

entrainment that were evaluated for the age equivalent analysis include: 

• bay anchovy 
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8-2 

• mysid shrimp. 

The following life history parameters Shaw and Providence researched for the age equivalent 

analysis are necessary to build the equivalent adult model included: 

• Age specific survival, egg to larval stages, between larval stages, postlarval to age 

1, and subsequent annual survivorship. 

• Age specific sex ratio of spawning adults at each age. 

• Age specific fecundity (number of eggs produced per year). 

• Length at age. The length at age is used to estimate the age structure of the fish 

impinged at the facility. 

After exhaustive literature searches for the required data outlined above, it was apparent that 

sufficient data was not available to complete this analysis for the most abundant species 

impinged and entrained at Teche Power Station. The age-1 equivalent adult loss modeling was 

therefore not evaluated for this facility. This type of modeling exercise conducted for facilities 

with similar freshwater species assemblages often reveals that the age-1 equivalent impacts can 

often be orders of magnitude lower than the raw numbers might otherwise suggest. This is likely 

to be the case for Teche as well; however, age-1 equivalent impact cannot be quantified with the 

limited available data. 
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9-1

9.0 Physical Parameters 

Stream flow data from U.S. Geological Survey (USGS) gauging station 073815450 at Chicot 

Pass, Louisiana, located approximately 4.2 miles upstream of the Teche Power Station contains 

publicly available data including gage height (Figure 9-1) and discharge (Figure 9-2). 

According to Figure 9-1, the highest peak in gage height was during February 2007 just weeks 

after an increase in flow indicated in the discharge graph (Figure 9-2); IM&E during this time 

frame exhibited low numbers. The daily discharge data (Figure 9-2) shows both positive and 

negative discharge values including flow reversals. 

Figure 9-1: Hydrograph showing the conditions near Teche during the 12-month sampling 

period June 2006–May 2007. 
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9-2 

Figure 9-2: Daily discharge data showing the conditions near Teche during the 12-month 

sampling period June 2006–May 2007. 

Temperature, D.O., salinity, and pH were recorded at the time of the IM&E sampling and 

included in the table below (Table 9-1). D.O. and salinity are shown in the graph below (Figure

9-3). In general these parameters exhibited some degree of seasonal variation, typical for this 

estuarine water body type. There were two instances of short-term salinity spikes during 

September 2006 and October 2006 which may have been attributed to storm-driven tidal flows. 

D.O. levels and saturation reached a low point during July, as expected when the water 

temperatures were greatest. Section 4.1.2 explains how salinity and D.O. affected IM during the 

12-month study. Salinity and D.O. did not significantly affect entrainment. 
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9-3 

Table 9-1: Water quality data collected from Unit 3 intake flow during sampling events at 

Teche Power Station, June 2006–May 2007. 

DATE TIME SAMPLE 

BLOCK TEMP. D.O. D.O. SAT. SALINITY pH 

06-06-06 9:00 1A 27.8 5.70 74.1 0.19 7.80 

06-06-06 15:00 1B 29.7 5.63 73.8 0.18 7.51 

06-06-06 23:00 1C 28.4 5.70 73.7 0.20 7.59 

06-13-06 7:15 2A 30.4 5.90 78.4 0.20 7.84 

06-13-06 15:15 2B 30.8 6.90 93.3 0.21 8.04 

06-13-06 23:15 2C 30.6 6.70 90.0 0.21 8.10 

06-20-06 7:30 3A 30.2 6.30 83.5 0.17 8.54 

06-20-06 15:30 3B 31.2 8.00 107.0 0.18 8.48 

06-20-06 23:45 3C 30.3 7.30 97.1 0.16 8.73 

06-27-06 7:30 4A 30.7 3.70 49.8 0.16 8.59 

06-27-06 15:30 4B 31.9 4.40 60.4 0.17 8.18 

06-27-06 23:30 4C 31.5 6.20 84.5 0.19 8.41 

07-05-06 7:30 5A 30.7 4.30 57.3 0.19 7.59 

07-05-06 15:30 5B 31.4 4.80 64.7 0.20 7.71 

07-05-06 23:30 5C 30.1 4.30 56.7 0.18 7.74 

07-18-06 7:30 6A 33.4 2.10 29.3 0.14 7.54 

07-18-06 15:30 6B 33.2 6.40 89.3 0.18 8.12 

07-18-06 23:30 6C 32.6 1.30 18.1 0.14 7.52 

08-01-06 7:30 7A 32.4 5.60 77.1 0.16 7.78 

08-01-06 15:30 7B 33.1 8.70 121.0 0.19 8.27 

08-01-06 23:30 7C 32.1 3.80 51.8 0.14 7.43 

08-15-06 07:30 8A 31.8 2.80 37.7 0.14 7.35 

08-15-06 15:30 8B 32.7 3.40 46.0 0.14 7.42 

08-15-06 23:30 8C 32.6 4.10 57.4 0.13 7.76 

08-29-06 07:30 9A 30.8 2.60 35.5 0.13 7.54 

08-29-06 15:30 9B 30.1 4.00 52.8 0.13 7.87 

08-29-06 23:30 9C 31.3 4.30 57.8 0.13 8.11 

09-05-06 07:30 10A 31.1 3.50 47.6 0.19 7.40 

09-05-06 15:30 10B 30.5 6.30 84.0 0.23 7.70 

09-05-06 23:30 10C 30.8 4.23 56.2 0.21 7.66 
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9-4 

DATE TIME SAMPLE 

BLOCK TEMP. D.O. D.O. SAT. SALINITY pH 

09-12-06 07:30 11A 30.5 6.20 82.1 0.43 7.67 

09-12-06 15:30 11B 31.1 6.20 82.8 0.59 7.55 

09-12-06 23:30 11C 30.4 4.50 60.2 0.41 7.49 

09-19-06 08:00 12A 29.6 3.20 42.2 0.23 7.29 

09-19-06 15:00 12B 29.4 3.70 48.4 0.21 7.48 

09-19-06 23:00 12C 28.2 4.80 61.1 0.20 7.84 

09-26-06 07:40 13A 26.8 7.00 86.3 0.22 8.69 

09-26-06 15:25 13B 27.3 7.20 92.4 0.21 8.70 

09-26-06 23:15 13C 27.3 6.20 78.5 0.21 8.54 

10-03-06 07:45 14A 27.9 4.70 60.0 0.25 7.52 

10-03-06 15:00 14B 27.7 5.50 70.2 0.27 8.09 

10-03-06 23:00 14C 28.2 5.00 64.0 0.25 7.71 

10-10-06 07:15 15A 25.3 6.60 80.0 0.18 7.91 

10-10-06 15:00 15B 25.4 6.60 79.8 0.18 8.15 

10-10-06 22:45 15C 25.7 6.40 78.2 0.18 7.84 

10-17-06 07:15 16A 24.1 6.40 77.0 1.48 7.78 

10-17-06 15:05 16B 24.5 6.30 75.7 1.68 8.47 

10-17-06 23:00 16C 24.3 5.60 66.6 1.39 7.83 

10-24-06 07:15 17A 19.6 7.60 83.0 0.25 8.87 

10-24-06 15:30 17B 19.7 8.10 88.0 0.26 9.32 

10-24-06 00:15 17C 19.2 6.30 68.8 0.24 9.34 

10-31-06 07:15 18A 19.8 6.90 76.1 0.09 7.88 

10-31-06 15:17 18B 20.3 6.70 73.6 0.08 7.89 

10-31-06 23:15 18C 21.1 7.00 78.4 0.07 7.63 

11-07-06 7:15 19A 18.7 6.60 70.3 0.06 7.50 

11-07-06 15:00 19B 18.4 7.25 74.5 0.05 7.24 

11-07-06 23:00 19C 18.4 7.80 82.7 0.05 7.33 

11-14-06 7:15 20A 20.2 9.07 99.8 0.01 7.91 

11-14-06 15:05 20B 23.8 8.40 99.2 -- 7.68 

11-14-06 23:00 20C 23.7 7.60 88.4 0.01 7.83 

11-21-06 7:20 21A 13.3 9.10 86.2 0.08 7.65 

11-21-06 14:59 21B 12.3 9.00 82.6 0.07 7.53 
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9-5 

DATE TIME SAMPLE 

BLOCK TEMP. D.O. D.O. SAT. SALINITY pH 

11-21-06 11:00 21C 13.9 8.40 81.4 0.08 7.82 

11-28-06 7:25 22A 14.7 9.10 89.5 0.16 7.64 

11-28-06 15:20 22B 16.2 11.30 115.4 0.18 7.90 

11-28-06 23:00 22C 15.7 9.80 99.0 0.17 7.42 

12-05-06 7:15 23A 10.4 9.40 84.1 0.10 7.51 

12-05-06 15:15 23B 10.3 11.20 100.0 0.11 7.50 

12-05-06 23:10 23C 11.4 10.20 93.8 0.15 7.62 

12-19-06 7:15 24A 15.5 7.20 85.3 0.13 7.30 

12-19-06 14:47 24B 16.1 7.30 86.2 0.13 7.42 

12-19-06 23:00 24C 16.1 7.30 86.7 0.14 7.36 

01-02-07 7:00 25A 14.3 7.60 73.7 0.06 7.19 

01-02-07 15:00 25B 13.7 7.90 76.0 0.07 7.33 

01-02-07 23:00 25C 14.1 7.60 73.9 0.07 7.26 

01-16-07 7:40 26A 16.5 7.70 78.7 0.05 7.98 

01-16-07 15:30 26B 14.4 9.10 89.0 0.06 7.91 

01-16-07 23:00 26C 13.3 8.90 85.0 0.06 7.72 

01-30-07 8:40 27A 10.3 9.20 81.7 0.05 7.13 

01-30-07 15:01 27B 10.4 8.70 78.5 0.05 7.21 

01-30-07 10:25 27C 10.2 9.00 80.5 0.06 7.16 

02-06-07 7:20 28A 9.1 8.80 76.4 0.07 7.42 

02-06-07 14:50 28B 10.1 9.53 84.3 0.06 7.33 

02-06-07 23:10 28C 10.7 8.60 77.3 0.07 7.49 

02-22-07 7:25 29A 11.9 9.40 86.6 0.10 7.48 

02-22-07 15:36 29B 12.8 7.90 74.7 0.11 7.83 

02-22-07 23:30 29C 13.7 8.40 81.3 0.11 7.22 

03-06-07 8:00 30A 13.9 9.50 91.5 0.10 7.67 

03-06-07 15:50 30B 14.5 9.10 89.5 0.09 7.70 

03-06-07 11:30 30C 14.6 9.60 95.1 0.12 7.79 

03-15-07 8:15 31A 16.3 8.50 87.1 0.17 7.55 

03-15-07 16:08 31B 18.6 7.70 81.5 0.15 7.68 

03-15-07 23:30 31C 21.1 7.10 76.0 0.15 7.58 

04-03-07 7:00 32A 22.6 7.10 82.0 0.16 7.72 
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9-6 

DATE TIME SAMPLE 

BLOCK TEMP. D.O. D.O. SAT. SALINITY pH 

04-03-07 15:00 32B 23.5 8.00 94.3 0.17 7.63 

04-02-07 23:40 32C 22.1 7.70 88.3 0.16 7.76 

04-10-07 6:50 33A 15.9 7.60 78.4 0.19 7.75 

04-10-07 14:50 33B 16.4 7.30 74.4 0.19 7.64 

04-09-07 23:15 33C 15.9 8.50 86.2 0.19 7.53 

04-17-07 7:05 34A 21.0 7.70 86.8 0.17 7.90 

04-17-07 14:40 34B 20.6 8.60 96.0 0.18 7.91 

04-16-07 23:10 34C 20.5 8.00 89.0 0.16 8.09 

04-24-07 6:40 35A 20.4 7.60 84.7 0.21 7.71 

04-24-07 14:40 35B 22.7 7.40 85.3 0.20 7.68 

04-23-07 23:07 35C 19.4 7.60 82.9 0.21 7.60 

05-01-07 23:00 36C 21.7 9.30 105.7 0.22 7.83 

05-02-07 7:00 36A 20.8 6.80 76.4 0.22 7.89 

05-02-07 14:50 36B 19.2 8.40 91.1 0.23 7.51 

05-08-07 1:00 37C 27.3 5.00 62.8 0.15 7.86 

05-08-07 9:00 37A 26.8 5.00 62.0 0.14 8.07 

05-08-07 17:00 37B 27.9 5.90 75.9 0.13 8.32 

05-14-07 23:35 38C 28.4 4.60 59.3 0.16 7.45 

05-15-07 7:30 38A 27.7 5.10 65.2 0.18 7.71 

05-15-07 15:30 38B 25.5 6.30 76.6 0.20 8.00 

05-21-07 22:30 39C 25.0 5.00 60.4 0.20 7.77 

05-22-07 6:55 39A 24.8 5.60 67.8 0.20 7.88 

05-22-07 14:55 39B 25.6 5.80 40.8 0.20 7.70 
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9-7 

Figure 9-3: Dissolved oxygen and salinity data recorded at Teche Power Station during the 

12-month sampling period, June 2006–May 2007. Peak salinities and low D.O. values are 

denoted with an asterisk (*). 

In general, two specific parameters, salinity and D.O., exhibited some degree of seasonal 

variation, at Teche Power Station, June 2006 through May 2007. Figure 9-4 demonstrates a 

narrow range of salinity across a large range of IM&E. Only three high D.O. values are near 8 

mg/L with only two high entrainment events and one low entrainment event. Increased D.O. 

does not significantly effect entrainment or impingement; however, low D.O., expected during 

the summertime during low flow critical conditions, caused an increase in impingement. 
N:\CLIENT\CLECO\Teche\LPDES 316b Submittal\Teche Final IM&E 316b Report4.doc January 2009 

9-8 

Figure 9-4: The relationship between salinity and D.O. versus IM&E at Teche Power 

Station during the 12-month sampling period, June 2006–May 2007. 
N:\CLIENT\CLECO\Teche\LPDES 316b Submittal\Teche Final IM&E 316b Report4.doc January 2009 

9-9 

Species Life-History Information 

A narrative description of each species of importance (as determined by abundance) follows 

below. 

9.1 Atlantic Croaker 

During the 12 months of sampling, a total of 2 Atlantic croakers were collected through 

entrainment and a total of 15,126 Atlantic croakers were collected through impingement. This 

translates to an estimated annual entrainment of 44,771 and an estimated annual impingement of 

235,530. The majority of Atlantic croaker impinged included juveniles and adults ranging in size 

from 21 to 283 mm TL. Atlantic croaker are members of the croakers and drum family, 

Sciaenidae, and are distributed from Massachusetts to the Gulf of Mexico along the Atlantic 

coast. Atlantic croakers are bottom-feeders that consume invertebrates such as crustaceans and 

worms and occasionally smaller fish. It is found on sand and mud bottoms inshore and a variety 

of bottoms offshore. Males make a croaking sound using their air bladders to attract females 

during spawning season. Spawning occurs offshore in the winter while the eggs and larvae move 

inshore to mature. 

9.2 Bay Anchovy 

During the 12 months of sampling, a total of 4,118 bay anchovy were collected through 

entrainment and a total of 3,519 bay anchovy were collected through impingement. This 

translates to an estimated annual entrainment of 113,504,337 and an estimated annual 

impingement of 65,659. The majority of bay anchovy impinged included juveniles and adults 

ranging in size from 16-81 mm TL. Bay anchovy are members of the Engraulidae family and are 

distributed along the Gulf of Mexico and the Atlantic coast. Bay anchovy consume zooplankton 

and small invertebrates and can tolerate a wide range of salinities, from sea to brackish waters. 

Bay anchovy are distributed into coastal sounds, bays, rivers, tidal creeks and impoundments. 

During the warmer months they spawn in estuarine and oceanic waters over a variety of 

substrates and water depths ranging from shallow to 100 feet, therefore no specific habitat is 

critical for this species. 

9.3 Blue Crab 

During the 12 months of sampling, a total of 100 blue crab were collected through entrainment 

and a total of 4,227 blue crab were collected through impingement. This translates to an 

estimated annual entrainment of 2,361,661 and an estimated annual impingement of 74,433. The 

majority of blue crab impinged included juveniles and adults ranging in size from 4 to 205 mm 

TL. Blue crab are members of the Portunidae family, and are distributed in Atlantic coastal 

waters from Long Island to the Gulf of Mexico. Blue crab support one of Louisiana’s most 
N:\CLIENT\CLECO\Teche\LPDES 316b Submittal\Teche Final IM&E 316b Report4.doc January 2009 

9-10 

valuable commercial fisheries. Blue crab are bottom-dwellers in every type of habitat from salty 

waters of the Gulf of Mexico to brackish waters of bays and estuaries. They consume plant 

material, small crustaceans, and worms. Spawning occurs in high salinity waters at the mouth of 

bays whereas juveniles and adult males migrate to lower saline water to tributaries, tidal creeks 

and salt marshes where benthic fauna is abundant. During the warmer months adults occupy 

shallower waters while in winter months they burrow deeper channels to remain inactive. 

Spawning occurs during the summer. 

9.4 Hogchoker 

During the 12 months of sampling, a total of 29 hogchokers were collected through entrainment 

and a total of 2,437 hogchokers were collected through impingement. This translates to an 

estimated annual entrainment of 1,108,078 and an estimated annual impingement of 49,057. The 

majority of hogchokers impinged included juveniles and adults ranging in size from 15 to 110 

mm TL. Hogchokers are members of the flounders and sole family, Achiridae, and are 

distributed in freshwater streams and rivers along the coast of parts of North America from the 

Atlantic to the Gulf of Mexico. Hogchokers consume worms and small crustaceans. Adults 

inhabit coastal waters also entering fresh waters (hundreds of miles upstream). Spawning occurs 

in the spring where hogchokers migrate downstream. After hatching, larvae then move upstream. 

9.5 Brown Shrimp 

During the 12 months of sampling, a total of 6 brown shrimp were collected through entrainment 

and a total of 5,849 brown shrimp were collected through impingement. This translates to an 

estimated annual entrainment of 134,312 and an estimated annual impingement of 95,645. The 

majority of brown shrimp included juveniles and adults ranging in size from 35 to 128 mm TL. 

brown shrimp are members of the Penaeidae family and are a major component of the Gulf of 

Mexico shrimp fishery. Spawning occurs in the Gulf of Mexico where the eggs hatch into freeswimming larvae that move by tidal, wind and currents into shallow estuarine bay areas and 

attach to vegetation. Juveniles move into deeper bay areas as they mature. Brown shrimp 

consume worms and amphipods. During the winter post-larvae remain offshore in the Gulf of 

Mexico for a period of time before moving into estuaries in the spring. Brown shrimp prefer to 

inhabit vegetated areas of bays. Juveniles emigrate from bays to the Gulf of Mexico from May to 

August with peaks from May to July, in association with a full moon and tidal cycles. 

9.6 Ohio River Shrimp 

During the 12 months of sampling, a total of 309 river shrimp were collected through 

entrainment and a total of 4,374 river shrimp were collected through impingement. This 

translates to an estimated annual entrainment of 10,797,857 and an estimated annual 

impingement of 93,017. The majority of river shrimp impinged included juveniles and adults 

ranging in size from 12 to 103 mm TL. River shrimp are members of the Penaeidae family and 
N:\CLIENT\CLECO\Teche\LPDES 316b Submittal\Teche Final IM&E 316b Report4.doc January 2009 

9-11 

are distributed in the eastern United States seaboard to the Gulf of Mexico and are the only 

Macrobrachium spp. found in the Mississippi River. River shrimp prefer open side channels and 

borders of main channels, especially when the borders are flooded and plant and animal 

materials available for foraging. They occupy habitat with low visibility with greater abundances 

of suspended particulate matter. 
N:\CLIENT\CLECO\Teche\LPDES 316b Submittal\Teche Final IM&E 316b Report4.doc January 2009 

10-1 

10.0 References 

Bigelow, H.B. & Schroeder W.C. (1953). Fishery Bulletin of the Fish and Wildlife Service. 

Fish/shellfish of the Gulf of Maine. Volume 53. Retrieved December 19, 2007, from 

http://www.gma.org/fogm/Default.htm 

Chesapeake Bay Program Office. (2005). America’s Premier Watershed Restoration Partnership. 

Blue Crab. Retrieved December 19, 2007, from 

http://www.chesapeakebay.net/info/blue_crab.cfm 

Chesapeake Bay Program Office. (2005). America’s Premier Watershed Restoration Partnership. 

Atlantic Croaker. Retrieved December 19, 2007, from 

http://www.chesapeakebay.net/info/atlantic_croaker.cfm

Cook, R.L. (2002). The Texas Shrimp Fishery. Retrieved December 19, 2007, from 

http://www.tpwd.state.tx.us/publications/pwdpubs/media/pwd_rp_v3400_857.pdf

Delaney, L. (2005). Department of Natural Resources of South Carolina. Bay Anchovy. 

Retrieved December 19, 2007, from http://www.dnr.sc.gov/cwcs/pdf/Bayanchovy.pdf

Douglas, N. H. 1974. Freshwater Fish/shellfish of Louisiana. Baton Rouge, LA: Claitor’s 

Publishing Division. 

EPA (U.S. Environmental Protection Agency). 2004. National Pollutant Discharge Elimination 

System – Final Regulations to Establish Requirements for Cooling Water Intake 

Structures at Phase II Existing Facilities: Final Rule, 69 Federal Register. 41576 (To be 

codified at 40 CFR § 125 Subpart J). 

Goodyear, C.P. 1978 Entrainment Impact Estimates Using the Equivalent Adult Approach. 

FWS/OBS – 78/65, U.S. Department of the Interior, U.S. Fish & Wildlife Service, 

Washington, DC. Prepared by U.S. Fish & Wildlife Service. 

Horst, T.J. 1980. The Equivalent Adult Model: A general model for fisheries impact assessment. 

Presented at the Northeast Fish and Wildlife Conference, Ellenville, New York. 

LSU (Louisiana State University) Ag Center. (2006). Biological Info: A Shrimp’s Niche In Its 

Ecosystem. Retrieved December 19, 2007, from 

http://www.seagrantfish.lsu.edu/biological/shrimpniche.htm 

LSU (Louisiana State University) Ag Center. (2006). Biological Info: Atlantic Croaker. 

Retrieved December 19, 2007, from 

http://www.chesapeakebay.net/info/atlantic_croaker.cfm
N:\CLIENT\CLECO\Teche\LPDES 316b Submittal\Teche Final IM&E 316b Report4.doc January 2009 

10-2 

McClane, A. J. (1974). Field Guide to Freshwater Fish/shellfish of North America. New York, 

NY: Henry Holt and Company, LLC. 

Pflieger, W. L. 1975. The Fish/shellfish of Missouri. Missouri: Missouri Department of 

Conservation. 

Ramos, R.T. (2007) Fishwatchers. Trinectes maculates: Hogchoker. Retrieved December 19, 

2007, from http://filaman.ifm-geomar.de/Summary/SpeciesSummary.php?id=4260

Texas A&M. (2005). Invertebrates: The other Food Source. Retrieved December 19, 2007, from 

http://oceanworld.tamu.edu/resources/oceanography-book/invertebrates.htm

USFWS (U.S. Fish and Wildlife Service). 2006. Endangered and Threatened of Louisiana 

Parish List. 

USFWS (U.S. Fish and Wildlife Service). 1989. Species Profiles: Life Histories and 

Environmental Requirements of Coastal Fish/shellfish and Invertebrates. Bay Anchovy. 

Biological Report 82 (11-97). Retrieved December 19, 2007, from 

http://www.nwrc.usgs.gov/wdb/pub/species_profiles/82_11-097.pdf

Wenner, E. (2005). Ohio Shrimp. Retrieved December 19, 2007, from 

http://www.dnr.sc.gov/cwcs/pdf/Ohioshrimp.pdf 

Zinski, S. C. (2006). The Blue Crab Archives. Blue Crab Life Cycle. Retrieved December 19, 

2007, from http://www.bluecrab.info/lifecycle.html
 

 

Appendix A

Standard Operating Procedure (SOP)
STANDARD OPERATING PROCEDURES

FISH IMPINGEMENT & ENTRAINMENT

CHARACTERIZATION STUDY

TECHE POWER STATION

JUNE 2006 – JUNE 2007

20 June 2006 

Prepared By: 

11 Northeastern Blvd. 

Salem, NH 03079 
CLECO – Teche IM&E Standard Operating Procedures 01-21-2009 2

Table of Contents 

Table of Contents .......................................................................................................................................... 2

1.0 Summary............................................................................................................................................ 3

2.0 Project Organization........................................................................................................................... 4

3.0 Equipment & Materials....................................................................................................................... 5

3.1 Equipment Maintenance & Calibration..................................................................................... 5

4.0 Impingement Sampling (Providence) ................................................................................................. 6

4.1 Initial Set-Up ............................................................................................................................ 6

4.2 Sample Processing & Identification ......................................................................................... 8

4.3 Threatened or Endangered Species Protocol........................................................................ 10

5.0 Entrainment Sampling (Providence)................................................................................................. 11

5.1 Set-up/Calibration.................................................................................................................. 11

5.2 Sample Collection & Processing............................................................................................ 11

6.0 Laboratory Processing & Identification (LSU) .................................................................................. 14

6.1 Sorting ................................................................................................................................... 15

6.2 Subsampling (Splitting).......................................................................................................... 16

6.3 Identification & Enumeration.................................................................................................. 17

7.0 Quality Assurance/Quality Control (QA/QC) Plan ............................................................................ 19

7.1 QA/QC Inspection Schedule.................................................................................................. 19

7.2 Field QC Inspection Procedures – Impingement ID............................................................... 20

7.3 Laboratory Ichthyoplankton Sorting QA/QC Procedures ....................................................... 21

7.4 Laboratory Ichthyoplankton Identification QA/QC Procedures............................................... 22

8.0 Data Management & Control (Shaw) ............................................................................................... 23

8.1 Audits & Control Limits .......................................................................................................... 23

8.2 Field & Laboratory Procedure Audits..................................................................................... 24

8.3 Data Processing & Reporting Audits...................................................................................... 24

8.4 Control Limits......................................................................................................................... 25
CLECO – Teche IM&E Standard Operating Procedures 01-21-2009 3

1.0 Summary 

• Impingement and Entrainment sampling at the Teche facility is being conducted 

once per month for 12 months, so that the baseline-level impacts on the plant’s 

cooling water intake system can be characterized. 

• Each weekly/biweekly Impingement and Entrainment sampling event will be 

divided into three 8-hour sample blocks over a 24-hour period, using the 

following schedule as an example: 

SAMPLE 

BLOCK START END 

A 08:00 hrs 16:00 hrs 

B 16:00 hrs 24:00 hrs 

C 24:00 hrs 08:00 hrs 

• An impingement sample will consist of all fish/shellfish collected from the 

traveling water screens during each 12-hour sample block. 

• An entrainment sample will consist of all fish/shellfish collected from a 100 m3 

sample at the intake pipe sampling tap during each 12-hour sample block. 

• If conflicts with plant operations schedules arise, it may be necessary to split the 

sample blocks over non-consecutive 8-hour periods. 

• Call-ahead to the control room 24-hours in advance of sampling to ensure that the 

plant is operating and to coordinate sampling efforts with the plant staff. Be sure 

that the control room is logging all unit/pump/screen operations for the 24 hours 

prior to, and during, sample events. 

• Use field guides/keys to identify all impinged fish/shellfish to the lowest practical 

level. 

• Be sure to follow all procedures listed in this manual during all sampling events. 

• Include a copy of the field data sheets with all samples transported to LSU. 

• Use the following list of contacts when needed: 
CLECO – Teche IM&E Standard Operating Procedures 01-21-2009 4

2.0 Project Organization 

Deborah Saxton (Shaw) is the project manager and is responsible for all aspects of the 

impingement and entrainment sampling at Teche. Brian Dresser (Shaw) is the fisheries 

biologist/sampling technical advisor. He is responsible for project set-up in the field, 

maintenance of the QA/QC program, database management, and reporting. Landon Parr 

(Providence) is the field biologist and responsible for the on-site collection and 

identification of routine impingement samples from the Teche cooling water intake system. 

William Kelso (LSU) is responsible for the laboratory processing and identification of 

ichthyoplankton from entrainment samples and periodic confirmation/QC checks of 

impingement samples. Mike Flynn is the CLECO-Teche Client and will be coordinating our 

efforts with the plant operations staff. 

NAME ORGANIZATION PROJECT 

ROLE PHONE EMAIL 

Deborah Saxton Shaw E & I Project 

Manager 225-987-7325 (office) deborah.saxton@shawgrp.com

Brian Dresser 

Shaw E & I Fisheries 

Biologist 

603-870-4515 (office) 

603-289-0455 (cell) brian.dresser@shawgrp.com

Mike Schurtz Providence 225-766-7400 (office) mikeschurtz@providenceeng.com

Phillip Parker Providence 225-766-7400 (office) phillipparker@providenceeng.com

Landon Parr 

Providence Field Fisheries 

Biologist 

225-766-7400 (office) 

225-615-6745 (cell) landonparr@providenceeng.com

Kelso/Rutherford Lab LSU Sample ID 225-578-4176 (office) wkelso@lsu.edu

Teche Control Room CLECO 

Mike Flynn CLECO 318-484-7632 (office) charlie.vanhoof@cleco.com
CLECO – Teche IM&E Standard Operating Procedures 01-21-2009 5

3.0 Equipment & Materials 

The following equipment is needed during each impingement and entrainment sampling 

event: 

GENERAL IMPINGEMENT ENTRAINMENT 

PPE (hard hat, glasses, boots, ear 

protection, etc. 

Health & Safety Plan (HASP) 

SOP document 

Clipboard 

Digital camera w/ batteries 

Headlamp, extra batteries 

Work light 

Pencils/sharpies 

Coolers/ice 

Phone 

Field Guides/Taxonomic Keys to fish 

& shellfish 

Coolers/ice 

Physical & Water Quality Monitoring 

Equipment (DO meter, pH meter, 

Thermometer, etc.) 

Louisiana Scientific Collecting Permit 

Liner net (1/4” Ace knotless) 

Large plastic tub 

Fish/shellfish ID keys 

Neoprene/nitrile gloves 

5-gal buckets 

Bungee cords/staps 

Fish board/meter stick 

Fine/coarse forceps 

Ziploc bags 

Dip net 

Cable ties 

Datasheets 

Entrainment sampling tank 

Plankton net assembly 

Cod end jar 

Squirt bottle 

Stopwatch 

Graduated cylinder 

Sample bottles 

Label tape/internal labels 

Datasheets 

Buffered Formalin 

3.1 Equipment Maintenance & Calibration 

All equipment will be kept in good, working condition throughout the duration of the 

project. For equipment that requires regular maintenance or calibration, such procedures 

will adhere to the manufacturer’s recommendations, or a higher standard. The impingement 

basket and net liner shall be kept free of holes. If holes cannot be repaired without 

compromising the effectiveness of the net, the net shall be replaced immediately. If 

damage/holes develop on the metal impingement basket frame, notify plant maintenance 

personnel for repair. The net liner shall be rinsed and hung dry after each use. The 

debris/fish basket shall be removed from the fish return trough when sampling is completed 

and stored in a location designated by plant staff. Plankton nets shall also be rinsed and 

hung dry after each use. 
CLECO – Teche IM&E Standard Operating Procedures 01-21-2009 6

4.0 Impingement Sampling (Providence) 

4.1 Initial Set-Up 

1. Call the control room within 24-hours of planned sampling time to determine 

operational status, and to announce the timeframe of your sampling plans, etc. If 

records of pump/screen status have not been updated, the control room needs to 

begin recording all pump/screen activity at this time, continuing for the duration 

of the sample event. Log sheets will be provided to the control room, be sure to 

collect the log sheet at the end of each sample event. 

2. With the client’s approval, plant operations will be trained to set the impingement 

sampling basket at the onset of the 24-hour sampling event to maximize the 

efficiency of the impingement sampling. This will be done after a complete 

screenwash cycle to ensure that no debris/organisms are carried-over from earlier. 

Plant staff should also post the “sampling in progress” signage in a conspicuous 

location. 

3. Place the impingement collection basket into the fish return basin, ensuring that 

no organisms escape from the basket during sampling. 

4. Plan to arrive at Teche at least three hours prior to the end of the first 8-hour 

sampling block to allow for set-up and completion of entrainment sampling. 

6:00 set collection basket plant operations sets basket at 06:00, after screenwash 

7:00 

8:00 

9:00 

10:00 collect entrainment arrive at Teche within ~3 hr. of end of 1st sample block 

11:00 

12:00 

13:00 

14:00 set collection basket sort/ID catch from 1st 8-hr. sample block 

15:00 

16:00 

17:00 

18:00 collect entrainment 

19:00 

20:00 

21:00 

22:00 set collection basket sort/ID catch from 2nd 8-hr. sample block 

23:00 

0:00 

1:00 

2:00 collect entrainment 

3:00 
CLECO – Teche IM&E Standard Operating Procedures 01-21-2009 7

4:00 

5:00 

6:00 sort/ID catch from 3rd 8-hr. sample block 

5. Call the control room upon arrival at the plant to confirm pump operations and the 

time of last screen operation with control room. 

6. Observe the contents of the impingement collection basket. If there has been no 

screen activity since the basket was set at the beginning of the 12-hour sampling 

block, it will be empty. Record appropriate notes regarding unit/pump/screen 

operations. 

7. If it appears that the basket has been overwhelmed by one or multiple screenwash 

cycles, discuss with plant operations staff to determine what their status was. If it 

appears that any portion of the collection may have been lost due to heavy debris 

loads/clogging, the sampling block must be re-run and attended by Shaw field 

personnel. 

8. At the end of each 8-hour sample block, a plant operator needs to run ALL 

screens associated with ALL pumps currently in operation. This needs to happen 

at the 8-hour mark regardless of any previous screen rotations within the sample 

block to ensure the collection of the complete 8-hour composite sample. 

9. Determine the length of time required for a complete screenwash cycle. This can 

be done by multiplying the number of screen panels by the time required for each 

screen panel to pass a fixed point. For example, if there are 50 screen panels and 

each one takes 30 seconds to pass through a marked point, the total time required 

for a complete screenwash cycle is 1,500 seconds (25 minutes). To ensure that no 

debris/organisms are left behind, the screenwash should continue for two 

complete rotations (50 minutes in this example) whenever possible. All screens 

should maintain a consistent operating speed throughout the wash cycle. 

10. For occasions when the fish/debris loads are high, the basket should be checked 

and cleared periodically. However, most occasions will not require the 

impingement basket to be attended continuously. Every effort should be made to 

not remove the basket during an active screen wash/rotation cycle. 

11. If you’re not certain of the screen operations during any sampling interval, verify 

with the control room whether any additional screenwashes have been initiated 

since the net has been set. Note any such derivations from the 8-hour schedule on 

the field data sheet. 

12. Upon completion of the first 8-hour sample block and screenwash cycle, lift the 

collection basket out of the sluiceway and remove all debris/organisms. Place all 
CLECO – Teche IM&E Standard Operating Procedures 01-21-2009 8

debris/organisms into buckets to be sorted. Large debris (branches, trash, etc.) 

may be discarded as directed by plant staff, only after inspected for fish/shellfish. 

13. Replace the collection basket back into the sluiceway for the next 8-hour sample 

block. Repeat the above procedure for the remainder of the sampling event. 

14. Repeat the above procedure (starting at step #8 above) at the end of the second 

and third 8-hour sample blocks. 

4.2 Sample Processing & Identification 

1. At the end of each 8-hour sampling block, the contents of the impingement basket 

need to be sorted and processed. Remove the entire contents of the impingement 

sampling net into 5-gal buckets or directly onto a sorting table. Pre-sort any 

organisms to be identified/measured. 

2. Keep all other debris in a bucket(s) to be re-inspected for any overlooked 

fish/shellfish. DO NOT DISCARD ANY DEBRIS UNTIL INSPECTED 

CAREFULLY FOR FISH/SHELLFISH. DO NOT DISCARD ANY 

FISH/SHELLFISH UNTIL SAMPLE IS CLEARED OF ANY QC 

INSPECTION.

3. Inspect debris for fish/shellfish by filling the bucket containing debris ~3/4 full of 

water. Carefully remove pieces of debris from the bucket, inspecting each 

handful for fish/shellfish. Shake clumps of debris in the water to loosen/remove 

any organisms. After debris has been removed, any remaining fish/shellfish 

should be clearly visible in the bucket. 

4. Another field technician should re-inspect the debris for any fish/shellfish that 

may have been missed by the original sorter. 

5. Use the field guides/taxonomic keys to identify fish/shellfish down to the lowest 

practical level, count and measure each individual (mm, total length), note the 

condition of each individual, and record all information on the data sheet. 

6. Another field technician should re-inspect the organisms identified by the original 

technician for any fish/shellfish that may have been misidentified. If there is any 

discrepancy, a representative sample should be sent to LSU for final ID. 

7. Determine the condition of each individual and inspect for any screen marks, 

injury, etc. If possible, determine whether each individual was alive or dead when 

impinged, based on observed condition. Record code(s) on the field sheet 

according to the parameters listed below (note that in some cases more than one 

code may be applicable): 
CLECO – Teche IM&E Standard Operating Procedures 01-21-2009 9

Observed Condition Code 

Live L 

Dead (after impingement) D 

Dead (prior to impingement) 1 

Fin Damage 2 

Scale Damage 3 

Blackspot 4 

Skin Ulcer/Leision 5 

Wound, General 6 

Fungal Growth 8 

Lamprey scar 9 

Other (describe in remarks) 10 

8. Fish impingement at Teche has never been monitored, so it is difficult to predict 

numbers and densities prior to initiating this study. However, if impingement is 

extremely high (1,000+ total numbers) at times, a subsampling procedure may be 

employed (procedure to be determined). 

9. Measure length (total length TL) for fishes, carapace width for crabs, carapace 

length for shrimp/crayfish, and maximum shell width for bivalves. 

10. While length measurements from all individuals is desired, if a large number 

(100+) of individuals of a single species have been observed from any sample 

event, record lengths from a representative subsample of 25 individuals. 

11. For individuals that cannot be identified in the field, follow the procedure below: 

• Take a digital photograph of the individual on the measuring board. Keep 

the individual (and others that are suspected to be the same) in a labeled 

bag stored in the iced cooler and bring back to LSU lab for storage until 

positive identification is made. 

• Time/date stamp the file and name according to the sample ID information 

• Store all questionable/unconfirmed identifications until final identification 

has been made and the sample has been cleared of any QC inspection. 
CLECO – Teche IM&E Standard Operating Procedures 01-21-2009 10

• If necessary, fish specimens will be sent to a recognized expert on fish 

identification (possibly LDWF). 

12. It may be necessary to ship an entire sample collection to the LSU Lab for final 

identification and/or QC checks. For either case, be sure to label the bag(s) with 

location, sample number, sample block, sample date, start/end time, initials of 

collector 

13. A voucher specimen and digital photograph for each species collected during the 

project will be maintained by the LSU laboratory as a reference collection for 

identification confirmation. If necessary, photographs only will be used for large 

specimens. 

14. Other specimens, once identified, counted, and measured, can be discarded 

according to existing protocol at Teche. 

4.3 Threatened or Endangered Species Protocol 

Any occurrences of threatened or endangered species must be reported to LDWF in 

accordance with the scientific collecting permit for this project. While there are no 

occurrences of any T&E species for the habitat associated with this intake structure on 

Charenton Canal, field personnel should be vigilant in their observations of all organisms so 

that rare species do not get overlooked and/or mis-identified as something more common. 

For this reason, it is important that all field personnel familiarize themselves with the T&E 

species that may have the potential to exist within St. Mary Parish. 
CLECO – Teche IM&E Standard Operating Procedures 01-21-2009 11

5.0 Entrainment Sampling (Providence) 

Entrainment samples will be collected within the same 8-hour sample blocks as 

impingement. However, the entrainment sample collection will only run for the amount of 

time needed to collect between 100 to 150 m3 of water from the intake pipe sampling tap 

(about 2 to 3 hours). Each entrainment sample must be collected within the same 8-hour 

window as the impingement sample block. Follow the procedures listed below: 

5.1 Set-up/Calibration 

1. Confirm with control room whether it’s clear to open the valves on the 4” 

sampling tap from the intake pipe 

2. With authorization of the control room, close the valve closest to the entrainment 

tank and open both valve(s) closest to the main intake pipes. Let the water flow 

through the 4” piping system for a few minutes to flush out any accumulated 

debris. 

3. Close one of the valves closest to the main intake pipe and open the valve closest 

to the entrainment tank, allowing water to flow into the tank for another few 

minutes to flush, fill tank to appropriate volume. 

4. If a flowmeter is used to determine sample flow/volume, ensure that the 

equipment is properly calibrated. Otherwise, calibrate the entrainment sampling 

tank to determine the time it will take to sample 100 cubic meters of water. This 

will be accomplished as follows: 

• Drain the collection container that is marked to a known volume. 

• Open all necessary valves. 

• Time how long it takes to fill the container (without the net) to the known 

volume mark. 

• Calculate (or use calibration table) to determine the time required to pump 

100 cubic meters. 

• Record calibration information and start time on the data form. 

5.2 Sample Collection & Processing 

1. Inspect the plankton net to ensure that there are no rips or tears. Check to ensure 

that the cod-end bottle fitting is secured to the net, tighten clamp if needed 
CLECO – Teche IM&E Standard Operating Procedures 01-21-2009 12

2. Attach cod-end bottle to plankton net, place net over the entrainment tank where 

the flow enters the tank. Secure the net in place using the appropriate clamps, 

boards, etc. 

3. Begin sampling by opening the entrainment tank valve and allow the water to 

flow into the net for the appropriate time interval to obtain between 100 to 150 m3

of volume. 

4. Check the net periodically to ensure that it is secure and that it is not becoming 

clogged. Loosen any kinks as needed. 

5. At the end of sampling period, close the entrainment tank valve to shut off the 

flow into the tank. Remove the net from any clamps/hangers and begin to rinse 

all plankton/filtrate towards the cod-end of the net. 

6. Gently rinse the entire length of the net in the sampling tank. Be sure not to fully 

immerse the 50 cm opening of the net to minimize any losses of organisms from 

the net. 

7. When the entire length of the net has been rinsed toward the cod-end, grasp the 

bottle and slowly decant excess water through the lower part of the net to further 

concentrate the sample/filtrate. 

8. Use a wash bottle to wash the concentrated filtrate from the lower walls of the net 

and back into the sample bottle. Wash-down from the outside of the net only to 

avoid damage to, or extrusion of, organisms within the net. 

9. At this point the volume in the sample bottle should be ~250 mL (about 1⁄4 the 

bottle volume). During times of heavy sample loads, multiple sample jars may be 

needed (1 of X, 2 of X, etc.). Note any multiple bottles on data sheet. 

10. Preserve the sample by adding enough ethanol to end up with a 5 to 15% buffered 

formalin. It is a good idea to keep a stock of pre-mixed 20% formalin solution 

(label as such) on-hand so that you can simply double the sample volume with 

20% formalin to end up with exactly a 10% solution. 

11. Label bottles (sharpie on label tape) and internal tags (pencil on waterproof paper) 

with the location, sample number, sample block, sample date, start/end time, 

volume collected, initials of collector: 

TECHE 1A (1 of #) 

09 MAY 2006 19:49 – 22:05 

123 m3

 BKD 
CLECO – Teche IM&E Standard Operating Procedures 01-21-2009 13

12. Cover and gently agitate to ensure that the preservative is thoroughly mixed with 

the sample contents. Ensure that the sample is labeled and place into cooler (no 

ice needed if preserved). Keep in a shaded, cool area until transfer to laboratory. 

Include a copy of the data sheet associated with all samples to be transported to 

LSU 

13. After noting the flowmeter value (total volume sampled), drain the entrainment 

tank. Any flowmeter calibrations should be conducted according to the 

manufacturer’s specifications 
CLECO – Teche IM&E Standard Operating Procedures 01-21-2009 14

6.0 Laboratory Processing & Identification (LSU) 

Impingement samples will be submitted to the laboratory for a preliminary QC check of 

field identifications. These samples will be transported on ice. Always include the 

appropriate data sheet with any shipments to the lab. Upon arrival at the LSU lab, the 

samples will be processed immediately, or transferred to a freezer. Once field personnel 

have passed initial QC requirements, impingement QC inspections by another field 

technician will be conducted on an ongoing (100% of samples) basis whenever possible. 

Whenever discrepancies exist in the field, samples will be shipped to LSU for resolution. 

Entrainment samples will be placed in a cooler and transported to the LSU lab after the 

completion of each sample week, resulting in 3 bottles for a typical shipment. Always 

include the appropriate data sheet with any shipments to the lab. The turn-around time (to 

return data to Shaw) for any given sample should not exceed 6 weeks from arrival in the 

laboratory. Fish/shellfish eggs and larvae collected will be picked and sorted from each 

entrainment sample. Ichthyoplankton will be categorized by egg or larval stages and 

identified to the lowest practical taxonomic level, measured, and counted. Taxonomic 

identification shall be to the lowest practical level. As appropriate for distinct taxa not 

readily identifiable to species level, several representative specimens shall be appropriately 

preserved and retained in reference collections for possible further identification by 

taxonomic specialists. Further identification may be deemed necessary for distinct taxa not 

readily identifiable to species if such taxa are (1) represented by more than a few specimens 

and are relatively abundant in samples from a sampling date, (2) seasonally abundant, (3) 

represented by a few specimens in samples from the majority of sampling dates, or (4) 

relatively abundant in samples from the majority of sampling dates. Taxonomic 

identifications by specialists are not part of the scope of work for these projects, but may be 

determined appropriate based on the above listed considerations. Enumeration of highly 

abundant species at any life stage may be accomplished by subsampling methods that are 

widely accepted as valid and considered appropriate for enumeration of ichthyoplankton. 

Due to the limited knowledge-base of identifying shellfish down to the species level, the 

“lowest practical level” for the majority of shellfish identifications will likely be to the 

Order or Family level. The term “shellfish” for the purposes of this project includes 

crustacean and molluscan species of direct commercial and recreational economic 

importance in Louisiana and include the following taxonomic groups, specimens from 

which should be identified and enumerated: 

• Freshwater crawfish (crayfish) of the families, Cambaridae and Astacidae 
CLECO – Teche IM&E Standard Operating Procedures 01-21-2009 15

• Grass shrimp of the Family Palaemonidae (Palaemontes spp. and Macrobrachium 

spp.) 

• Oppossum shrimp of the Order Mysidacea, Family Mysidae 

• Marine/estuarine shrimp of the Family Penaeidae (e.g., brown shrimp, 

Farfantepenaeus aztecus, white shrimp, Litopenaeus setiferus, pink shrimp, 

Penaeus duorarum, etc.) 

• Crabs of the Family Portunidae (e.g., Callinectes sapidus, etc.) and the Family 

Xanthidae (e.g., Menippe spp., Rhithropanopeus spp.) 

• American oyster, Crassostrea virginica 

The occurrence of freshwater mussels of the Family Unionidae should be noted, but 

identification and enumeration is not required unless significant numbers of specimens are 

included in sample collections. Identification and enumeration of the Unionidae are not 

included in the scope of work for these projects. For the purpose of these projects, other 

common and abundant taxa of Crustacea that include species that are small in size [e.g., 

copepods, amphipods, ostracods, branchiopod cladocerans, euphausiids (krill)] are not 

included in the term shellfish. Further taxonomic identification may be conducted if 

required for some shellfish groups. 

The following procedures will be used to process all entrainment samples: 

6.1 Sorting 

1. Upon receipt of samples, check to see that all samples are properly logged into the 

laboratory and that the field sheets and bottle labels are correct. 

2. Add Rose Bengal solution, if required, to each sample and additional formalin if 

needed. 

3. Ensure that all laboratory equipment is in working order. 

4. Record the sample number and other header information from the sample field 

data sheet to the entrainment laboratory data sheet/log. 

5. Place the coarse mesh screen/sieve over the appropriate finer sieve (0.300 and 

0.500 for Teche & Evangeline, respectively) and empty contents of sample bottle 

for a single sample onto the screen. Gently rinse with tap water to remove excess 

Rose Bengal and preservative. Efforts should be made to salvage the used 

formalin in accordance with the laboratory waste disposal procedures. The LSU 

laboratory is responsible for disposing of used formalin. 

6. Any larger organisms retained on the upper screen will be identified to species 

and included on the data sheet. Lifestages other than egg/larvae will be noted 
CLECO – Teche IM&E Standard Operating Procedures 01-21-2009 16

where applicable. The organisms on the lower/finer sieve will be egg/larvae to be 

sorted and identified. 

7. Place the entire sample, or a manageable portion, in a glass Petri dish, shallow 

sorting tray, or other similar device. 

8. Sort the fish/shellfish eggs and larvae from the debris and place in Petri dish or 

vials. If the sorter is familiar with the species being picked out from the sample, 

then preliminary taxonomic groupings can be made. This step will make the 

species identification more efficient for the person to ID the organisms. 

6.2 Subsampling (Splitting) 

If upon visual inspection of the sample jar, there are very large numbers of eggs or larvae 

(greater than 1000; approximately) those organisms may be subsampled (split). CONSULT 

THE LABORATORY TASK LEADER BEFORE SUBSAMPLING. Subsampling the 

dominant taxon will occur only after sorting the sample to remove less frequently occurring 

species or life stages. As a general rule, subsampling should not be conducted on samples 

containing fewer than 1,000 ichthyoplankton (eggs or larvae) in the sample. The entire 

sample should be processed without subsampling whenever possible. The procedure for 

splitting follows: 

1. Dilute the sample with tap water to bring the volume to about 250ml. 

2. Pour the sample into a Folsom or Motada-type plankton splitter and split the 

sample into two equal aliquots. 

3. Pour off each aliquot into separate containers (each is now a 1/2 split) and 

visually inspect each aliquot. 

4. If large numbers of eggs/larvae still exist, pour off one of these aliquots back into 

the Folsom splitter and continue splitting in this manner (1/4, 1/8, 1/16, 1/32, etc.) 

until the number of organisms in the subsample is between 100 and 200. Record 

the number of splits on the data form. 

5. Sort the sample as above, beginning with the smallest split aliquot. 

6. Once at least 100 individual eggs/larvae of a given species have been identified 

from a 1⁄2 split (or 200 from a 1⁄4 split, so on), the sorter no longer needs to pickout that species from that particular split if the minimum number is met. 

7. As an example, when a 1/32 split is examined for eggs, the number of eggs of 

each species are recorded. If more than 550 eggs (e.g. 551) are counted for any 
CLECO – Teche IM&E Standard Operating Procedures 01-21-2009 17

species, the total number of that species in the sample will be reported as 551 x 32 

= 17,632 and that species need not continue to be counted in other splits. If 

however, less than 550 eggs of a species are counted in the first 1/32 split, a 

second split (1/16) is fully counted (except for those species which already met 

the 550 criteria in the first split). When the combined total of the first and second 

split (now a 1/16 volume) for any species exceeds 200 eggs (e.g. 260), the number 

of eggs for that species will be reported as 260 x 16 = 4,160 for the sample. 

6.3 Identification & Enumeration 

1. Once sorted, species (or lowest taxonomic unit) can be identified, counted, and 

grouped by life stage (e.g., egg, larvae, or juvenile). Identifications shall be made 

using a microscope with appropriate magnification and lighting to allow for 

differentiation of morphological characteristics (pigmentation, fin ray counts, 

myomere counts, etc.) 

2. Appropriate early life-stage taxonomic references/keys shall be used to identify 

all organisms, based on morphological characteristics. Common and scientific 

names will follow the most updated version of the AFS standard reference for 

fishes, and similar reference for shellfish. 

3. Place each life stage (egg, larvae, or juvenile) of each species in a separate vial. 

4. Record species, lifestage, and counts on the laboratory data sheet/log. 

5. The data will be entered into an Excel spreadsheet containing the appropriate 

fields (location, date, time, sample event/block number, sample volume, species, 

EGGS LARVAE 

Split Number Split Number 

1/32 550 1/32 300 

1/16 200 1/16 300 

1/8 200 1/8 300 

1/4 100 1/4 200 

1/2 100 1/2 100 
CLECO – Teche IM&E Standard Operating Procedures 01-21-2009 18

number, density, etc.) as formatted and provided by the Shaw sampling 

coordinator. 

6. Data from the lab shall be forwarded to Providence for review, then to the Shaw 

Sampling Coordinator for filing and data entry/management & analysis. 

7. All processed samples shall be archived by LSU throughout the duration of the 

project and for a minimum of one year after the last sample is processed. 
7.0 Quality Assurance/Quality Control (QA/QC) Plan 

The goal of this QA/QC Plan is to ensure that work performance and resulting data & 

reports are of the highest quality and provided in a cost-effective, scientifically defensible, 

and timely manner. The approach taken by Shaw is to monitor the reliability, accuracy, and 

truth of results reported through quality assurance procedures and to maintain a required 

level of reliability through quality control (QC) procedures. All deliverables are subject to 

QA/QC guidelines, checks, and reviews. The following specific procedures will be 

instituted as part of the QA/QC program for this project. 

1. A reference collection of all species of fish found in samples taken during this 

project will be retained (photos or preserved specimens). A specimen(s) of each 

species (of various sizes, if possible) will be photographed or preserved and be 

available for reference should any questions of fish identification arise. 

2. A thorough system of logging and tracking of data will be instituted and followed. 

3. Field personnel will be trained by Shaw to perform required tasks. Laboratory 

personnel will be trained by LSU. Demonstrated proficiency to identify 

Louisiana fish/shellfish species, and the ability to use a taxonomic key is essential 

for both field and lab personnel. 

4. A Continuous Sampling Plan (CSP-1), quality control protocol to verify the 

acceptability of results will be incorporated into the program to insure an average 

outgoing quality limit (AOQL). This procedure calls for an initial complete 

inspection of eight (8) field and laboratory samples. If all of the initially 

inspected samplings or error free, a randomly selected sample within a block of 

samples is selected. If the random sample passes, a random sample out of the 

next block of seven will be processed. This will continue unless a sample fails 

inspection after which the plan will revert to complete re-inspection until the 

prescribed number of samples pass. 

5. The field identification QC inspection protocol will exceed the CSP-1 

requirements by having another on-site field technician re-inspect all sorted 

organisms and identifications. 

7.1 QA/QC Inspection Schedule 

1. The sampling coordinator will train all field personnel in the procedures listed in 

this manual. Initial QC inspections will be conducted on 100% of samples 

collected during “dry-run” or preliminary collection date(s). 

2. Upon training, field personnel will conduct QC inspections on all (100%) of 

identifications made in the field. No individual inspect their own work. For 
CLECO – Teche IM&E Standard Operating Procedures 01-21-2009 20

occasions when this is not possible in the field, samples will be shipped to the lab 

where the laboratory QC inspection schedule (1 in 7 samples inspected after the 

initial 8 passes) 

3. Upon training, lab personnel will conduct randomly assigned QC inspections on 

identifications made in the lab. One in seven samples will be subject to a QC 

inspection and no individual will process more than eight samples without being 

subject to a QC inspection. The inspections will be assigned such that no 

individual will inspect their own work. 

4. The laboratory manager/task leader will notify personnel when a sample is 

scheduled for a QC inspection. This schedule will be based on a random number 

table to assign inspections for 1 in every 7 random samples. 

5. The sampling coordinator (A Shaw fisheries biologist) will schedule at least one 

on-site QA inspection/site-visit of field and laboratory procedures during at least 

one of the first several sample events. This site visit will provide assurance to the 

Shaw project team that the general and project-specific laboratory procedures are 

being followed to ensure the integrity of data resulting from such procedures. The 

sampling coordinator will spend several hours at each field/laboratory site to 

monitor adherence to standard operating procedures and to check such things as 

accuracy of counts, identifications, and other measurements. All field and 

laboratory sampling/procedural programs will be audited at least once during the 

12-month sampling period by Shaw personnel. Reprocessing of field samples 

will be conducted for those programs where it is feasible. The reprocessing will 

be conducted according to a CSP-1 procedure to assure an AOQ of 10 percent. 

Laboratory quality control and quality assurance procedures by task are outlined 

as follows. 

A. Quality Control 

1. Sample sorting/processing/identifications 

2. Use of Standard Data Sheets/data entry 

3. CSP-1 Procedure to Assure 10 Percent AOQL 

B. Quality Assurance 

1. Laboratory & field procedures inspection by Senior Staff 

2. Instrument Calibration as required 

7.2 Field QC Inspection Procedures – Impingement ID 

1. All field identifications will be confirmed on-site by a third party (LSU) field 

biologist. This procedure exceeds the requirements for a Continuous Sampling 
CLECO – Teche IM&E Standard Operating Procedures 01-21-2009 21

Plan (CSP-1) quality control program used to assure that the Average Outgoing 

Quality Limit (AOQL) is 10 percent 

2. If any discrepancies exist, the specimen in question will be submitted to the LSU 

laboratory for resolution of ID. 

3. QC inspections will be conducted in accordance with standard procedures listed 

in this document, by a person other than the original sample processor. 

4. A collection is termed acceptable if 90 percent or more of the total fish of a 

particular species have been identified properly. Any discrepancies will be 

resolved and the data sheets updated as required. 

5. Note that if similar organisms are identified only down to the genus level, but the 

QC inspector is able to separate out two or more species, this does not constitute a 

misidentification. However, the inspector should inform the original ID’er of the 

particular features/characteristics used to make the identification down to the next 

level. 

7.3 Laboratory Ichthyoplankton Sorting QA/QC Procedures 

The following specific procedures will be used for the sample sorting component of this 

study: 

1. A Continuous Sampling Plan (CSP-1) quality control program will be used to 

assure that the Average Outgoing Quality Limit (AOQL) is 10 percent 

2. A defect will be defined as the sample sorter missing (failing to remove) 10 

percent of the total specimens available to be sorted from the sample. When the 

total number of specimens initially removed is less than 10, a defect will occur 

only if the recheck shows more than one specimen was missed 

3. All samples are listed by sample number and assigned QC numbers starting with 

one. Quality control sorting is conducted by a qualified individual other than the 

original sorter. 

4. All samples will be initially inspected until 8 consecutive samples are found to be 

within the defined limits. Inspection will then proceed at one sample randomly 

selected from the next lot of 7 consecutive samples until a defective sample is 

found. When this occurs, 100 percent reinspection occurs until 8 consecutive 

nondefective samples are found. Then the cycle repeats itself. 

5. If the QC value for any re-worked sample is different from the original value, a 

resolution is made and the appropriate value is entered on the data form. 
CLECO – Teche IM&E Standard Operating Procedures 01-21-2009 22

However the sample will only be considered defective if the difference is 10 

percent or more. 

6. A record of all QA/QC checks, results and other pertinent notations will be 

documented in a QA/QC logbook. 

7.4 Laboratory Ichthyoplankton Identification QA/QC Procedures 

The following specific procedures will be used for the ichthyoplankton identification 

component of this study: 

1. A CSP-1 program will be used to assure that the Average Outgoing Quality Limit 

(AOQL) is 10 percent 

2. A sample will be considered defective only if an error of 10 percent or more is 

made in identifying or counting ichthyoplankton. 

3. When the total number of specimens initially removed is less than 10, a defect 

will occur only if the recheck shows more than one specimen was missed. 

4. All samples are listed by sample number and assigned QC numbers starting with 

one. Quality Control identification is conducted by a qualified individual other 

than the original taxonomist. 

5. All samples will be initially inspected until 8 consecutive samples are found to be 

within the defined limits. Inspection will then proceed at one sample randomly 

selected from the next lot of 7 consecutive samples until a defective sample is 

found. When this occurs, 100 percent reinspection occurs until 8 consecutive 

nondefective samples are found. Then the cycle repeats itself. 

6. If the QC value for any re-worked sample is different from the original value, a 

resolution is made and the appropriate value is entered on the data form. 

However the sample will only be considered defective if the difference is 10 

percent or more. 

7. A record of all QA/QC checks, results and other pertinent notations will be 

documented in a QA/QC logbook. 
CLECO-Teche Impingement & Entrainment Sampling 

 SHEET _____ of _____ 

8.0 Data Management & Control (Shaw) 

Samples and data sheets will be generated in the field. Whenever practical, data collected in 

the field will be recorded directly on data sheets. These sheets will be designed so no 

further transcription is necessary prior to input of data into the database. Providence will 

retain original field data sheets to compare with the sample and QC data sets generated by 

the LSU lab. LSU will submit all laboratory data to Providence for comparison with field 

data sheets. Final impingement and entrainment data will be forwarded to the Shaw 

sampling coordinator. Samples to be processed in the LSU laboratory will be recorded and 

logged according to LSU standard laboratory procedures, including QA/QC procedures. 

The Shaw Sampling Coordinator will be responsible for ensuring that all samples, data 

forms, and related materials pertaining to the project are properly logged and 

recorded/entered into an Access database created for this project. This database will contain 

all pertinent information regarding the samples. The data entered will be forwarded to the 

appropriate personnel for data processing, analysis, and reporting. 

Data will be entered into an Access database. A log of data entry will be maintained so that 

Shaw can provide assurance that all data have been entered and QC inspected. All copies of 

data sheets will be stored in the central files of the Salem office. Data entries will be 

manually verified and will be subject to QA/QC procedures. A listing of the input data, 

identified by a file name and a time and date, will be produced. This listing will be 

examined closely by the responsible task leader or their authorized representatives for 

obvious inconsistencies. 

8.1 Audits & Control Limits 

The sampling coordinator will be responsible for the project auditing to monitor the quality 

of data produced throughout the monitoring program. The auditing program is designed to 

monitor the reliability, accuracy, and truth of results reported, to determine when corrective 

measures must be undertaken to provide a record of Shaw's quality assurance program and 

to assure an Average Outgoing Quality (AOQ) of 10 percent for field and laboratory 

applications and two percent for data handling. Audits will be conducted by senior 

biologists or by representatives designated by the QA officer. 
CLECO-Teche Impingement & Entrainment Sampling 

 SHEET _____ of _____ 

8.2 Field & Laboratory Procedure Audits 

In field and laboratory tasks, the level of reliability will be monitored by placing a biologist 

who has complete familiarity with the task into the sampling crew to allow him to monitor 

adherence to standard operating procedures and to check such things as accuracy of counts, 

identifications, and other measurements. All field and laboratory sampling/procedural 

programs will be audited at least once during the 12-month sampling period by Shaw 

personnel. Reprocessing of field samples will be conducted for those programs where it is 

feasible. The reprocessing will be conducted according to a CSP-1 procedure to assure an 

AOQ of 10 percent. Field quality control and quality assurance procedures by task are 

outlined as follows. 

A. Quality Control 

1. Field Sampling SOP's 

2. Use of Standard Data Sheets 

3. CSP-1 Procedure to Assure 10 Percent AOQL 

B. Quality Assurance 

1. Field Inspection by Senior Staff 

2. Instrument Calibration as required 

8.3 Data Processing & Reporting Audits

The level of accuracy of data files will be assured by file audits and computer error routines. 

Database files will be audited for data input and recording errors by the responsible task 

leader scanning fields of each file and verifying 10 percent of the content of each file with 

the original data sheets. Computer error checks will be made for all species codes recorded 

against the species list. When computer results are generated by programs, those programs 

will be tested with standard data sets to assure that the program produces accurate results. 

This will assure that data handling is accomplished successfully and that computer 

programming errors are absent. Any results from calculations not performed by computer 

will be subject to a 10 percent spot check. Project files will be examined periodically for 

completeness. 

The quality assurance officer or his designated representative will report the results of audits 

in a memorandum to the project manager. Any non-conformances to the QA program or 

Standard Operating Procedures and recommended corrective actions (or completed actions 
CLECO-Teche Impingement & Entrainment Sampling 

 SHEET _____ of _____ 

if only minor corrections are necessary) will be listed in this memorandum. Audit memos 

will be filed in the quality assurance file. Additionally, the following records will be kept of 

quality assurance checks: 

• Field Procedures: All quality assurance checks will be documented in a QA field 

log book. This log will contain a record of any observed deviations from standard 

operating procedures and numerical results of auditing procedures such as 

independent counts and species identifications. 

• Data File Processing Procedures: A log of all audit checks will be maintained. 

Program documentation will be such that steps will be easily followed by an 

independent auditor. 

Errors which are detected during auditing procedures will be corrected. In the event errors 

are detected subsequent to issuance of a report, the report will be amended to reflect the 

necessary changes. 

8.4 Control Limits 

Control limits will be used as criteria for action, or for evaluating the significance of 

variations between duplicate measurements on the same sample. Any deviations from SOP 

in field tasks that have not been authorized by the project manager will be considered 

significant. Differences in counts, percentage agreement in identifications, and other 

measurement tasks which differ by greater than 10 percent will be considered significant. 

This 10 percent variation will be the definition of a sample which should be rejected in the 

CSP-l. 

Any errors resulting from incorrect computer programs will be considered significant. 

Errors in computerized data files arising from data entry errors or observed by hand 

calculations may not exceed two percent for each file. Errors in database tables and any 

other numerical results may not exceed two percent 
APPENDIX B

Tables listing the total numbers (actual & estimated)

1 for

weekly entrainment (eggs/larvae/juveniles) and impingement

(juveniles/adults)

 

1 Note for Appendix Tables: values of “0.5” for actual numbers as sampled occur for occasions where values were 

obtained by averaging from adjacent weeks to obtain a value for a non-sampled week. All estimated numbers are 

rounded to one decimal place for concise presentation in these tables, therefore the “Total” for each week may 

exhibit apparent rounding errors for a given column/week. However, all calculations for the data analysis in this 

report used raw numbers without rounding. 
Table B -1: Total weekly entrainment (eggs and larvae) densities (number per 100 m3) as sampled during the MORNING samp

SHADED columns were derived by averaging from adjacent weeks. 

N:\CLIENT\CLECO\Teche\IM&E Characterization\Characterization Report\Appendix\Appendix B-Final 1 IME Report.doc 

SAMPLE WEEK Æ 06-04-06 06-11-06 06-18-06 06-25-06 07-02-06 07-09-06 07-16-06 07-23-07 07-30-06 08-06-06 08-13-06 

Aplodinotus grunniens 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Catostomidae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Cyprinidae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Decapoda 1.0 4.0 26.0 5.0 3.0 3.0 3.0 2.0 1.0 0.5 0.0 Dorosoma cepedianum 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Dorosoma spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Elops saurus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Fundulus spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Gobiidae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ictalurus spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Lepomis spp. 0.0 0.0 0.0 0.0 0.0 0.5 1.0 0.5 0.0 0.0 0.0 Menidia beryllina 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Sciaenidae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Syngnathus scovelli 0.0 0.0 0.0 0.0 0.0 0.5 1.0 0.5 0.0 0.0 0.0 

Unidentified fish remains 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Unidentified egg 0.0 1.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

TOTAL 1.0 5.0 26.0 5.0 3.0 4.0 5.0 3.0 1.0 0.5 0.0 

SAMPLE WEEK Æ 09-03-06 09-10-06 09-17-06 09-24-06 10-01-06 10-08-06 10-15-06 10-22-06 10-29-06 11-05-06 11-12-06 

Aplodinotus grunniens 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Catostomidae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Cyprinidae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Decapoda 0.0 1.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Dorosoma cepedianum 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Dorosoma spp. 0.0 0.0 0.0 0.0 0.0 0.0 1.0 0.0 0.0 0.0 0.0 Elops saurus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Fundulus spp. 0.0 0.0 1.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Gobiidae 0.0 6.0 0.0 0.0 0.0 0.0 16.0 0.0 0.0 0.0 0.0 Ictalurus spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Lepomis spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Menidia beryllina 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Sciaenidae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Syngnathus scovelli 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Unidentified fish remains 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Unidentified egg 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 TOTAL 0.0 7.0 1.0 0.0 0.0 0.0 17.0 0.0 0.0 0.0 0.0 
Table B -1: Total weekly entrainment (eggs and larvae) densities (number per 100 m3) as sampled during the MORNING samp

SHADED columns were derived by averaging from adjacent weeks. 

N:\CLIENT\CLECO\Teche\IM&E Characterization\Characterization Report\Appendix\Appendix B-Final 1 IME Report.doc 

SAMPLE WEEK Æ 12-03-06 12-10-06 12-17-06 12-24-06 12-31-06 01-07-07 01-14-07 01-24-07 01-28-07 02-04-07 02-1

Aplodinotus grunniens 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Catostomidae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Cyprinidae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Decapoda 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Dorosoma cepedianum 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Dorosoma spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Elops saurus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Fundulus spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Gobiidae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ictalurus spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Lepomis spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Menidia beryllina 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Sciaenidae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Syngnathus scovelli 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Unidentified fish remains 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Unidentified egg 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

TOTAL 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

SAMPLE WEEK Æ 03-04-07 03-11-07 03-18-07 03-25-07 04-01-07 04-08-07 04-15-07 04-22-07 04-29-07 05-06-07 05-1

Aplodinotus grunniens 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Catostomidae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Cyprinidae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Decapoda 0.0 0.0 0.0 0.0 0.0 0.0 0.0 1.0 0.0 0.0 Dorosoma cepedianum 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Dorosoma spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Elops saurus 0.0 0.0 0.5 0.5 1.0 0.0 0.0 0.0 0.0 0.0 Fundulus spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Gobiidae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ictalurus spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Lepomis spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Menidia beryllina 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Sciaenidae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Syngnathus scovelli 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Unidentified fish remains 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Unidentified egg 0.0 0.0 0.0 0.0 0.0 0.0 0.0 7.0 173.0 13.0 TOTAL 0.0 0.0 0.5 0.5 1.0 0.0 0.0 8.0 173.0 13.0 
Table B-2: Estimated total weekly entrainment (eggs and larvae) based on design flow data during the MORNING sample b

100% design flow). Data in SHADED columns were derived by averaging from adjacent weeks. 

N:\CLIENT\CLECO\Teche\IM&E Characterization\Characterization Report\Appendix\Appendix B-Final 1 IME Report.doc 

SAMPLE WEEK Æ 06-04-06 06-11-06 06-18-06 06-25-06 07-02-06 07-09-06 07-16-06 07-23-07 07-30-06 

Aplodinotus grunniens 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Catostomidae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Cyprinidae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Decapoda 22,385.4 89,541.6 582,020.7 111,927.1 67,156.2 67,156.2 67,156.2 44,770.8 22,385.4 Dorosoma cepedianum 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Dorosoma spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Elops saurus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Fundulus spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Gobiidae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ictalurus spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Lepomis spp. 0.0 0.0 0.0 0.0 0.0 11,192.7 22,385.4 11,192.7 0.0 Menidia beryllina 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Sciaenidae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Syngnathus scovelli 0.0 0.0 0.0 0.0 0.0 11,192.7 22,385.4 11,192.7 0.0 Unidentified fish remains 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Unidentified egg 0.0 22,385.4 0.0 0.0 0.0 0.0 0.0 0.0 0.0 TOTAL 22,385.4 111,927.1 582,020.7 111,927.1 67,156.2 89,541.6 111,927.1 67,156.2 22,385.4 

SAMPLE WEEK Æ 09-03-06 09-10-06 09-17-06 09-24-06 10-01-06 10-08-06 10-15-06 10-22-06 10-29-06 11

Aplodinotus grunniens 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Catostomidae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Cyprinidae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Decapoda 0.0 22,385.4 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Dorosoma cepedianum 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Dorosoma spp. 0.0 0.0 0.0 0.0 0.0 0.0 22,385.4 0.0 0.0 Elops saurus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Fundulus spp. 0.0 0.0 22,385.4 0.0 0.0 0.0 0.0 0.0 0.0 Gobiidae 0.0 134,312.5 0.0 0.0 0.0 0.0 358,166.6 0.0 0.0 Ictalurus spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Lepomis spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Menidia beryllina 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Sciaenidae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Syngnathus scovelli 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Unidentified fish remains 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Unidentified egg 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 TOTAL 0.0 156,697.9 22,385.4 0.0 0.0 0.0 380,552.0 0.0 0.0 
Table B-2: Estimated total weekly entrainment (eggs and larvae) based on design flow data during the MORNING sample b

100% design flow). Data in SHADED columns were derived by averaging from adjacent weeks. 

N:\CLIENT\CLECO\Teche\IM&E Characterization\Characterization Report\Appendix\Appendix B-Final 1 IME Report.doc 

SAMPLE WEEK Æ 12-03-06 12-10-06 12-17-06 12-24-06 12-31-06 01-07-07 01-14-07 01-24-07 01-28-07 02-04-07 02-1

Aplodinotus grunniens 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Catostomidae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Cyprinidae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Decapoda 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Dorosoma cepedianum 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Dorosoma spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Elops saurus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Fundulus spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Gobiidae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ictalurus spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Lepomis spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Menidia beryllina 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Sciaenidae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Syngnathus scovelli 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Unidentified fish remains 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Unidentified egg 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

TOTAL 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

SAMPLE WEEK Æ 03-04-07 03-11-07 03-18-07 03-25-07 04-01-07 04-08-07 04-15-07 04-22-07 04-29-07 05-06-07 05-1

Aplodinotus grunniens 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Catostomidae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Cyprinidae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Decapoda 0.0 0.0 0.0 0.0 0.0 0.0 0.0 22,385.4 0.0 0.0 Dorosoma cepedianum 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Dorosoma spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Elops saurus 0.0 0.0 11,192.7 11,192.7 22,385.4 0.0 0.0 0.0 0.0 0.0 Fundulus spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Gobiidae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ictalurus spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Lepomis spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Menidia beryllina 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Sciaenidae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Syngnathus scovelli 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Unidentified fish remains 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Unidentified egg 0.0 0.0 0.0 0.0 0.0 0.0 0.0 156,697.9 3,872,676.1 291,010.3 TOTAL 0.0 0.0 11,192.7 11,192.7 22,385.4 0.0 0.0 179,083.3 3,872,676.1 291,010.3 
Table B-3: Estimated total weekly entrainment (eggs and larvae) based on actual flow data during the MORNING sample b

columns were derived by averaging from adjacent weeks. 

N:\CLIENT\CLECO\Teche\IM&E Characterization\Characterization Report\Appendix\Appendix B-Final 1 IME Report.doc 

SAMPLE WEEK 

Æ 06-04-06 06-11-06 06-18-06 06-25-06 07-02-06 07-09-06 07-16-06 07-23-07 07-30-06 

Aplodinotus grunniens 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Catostomidae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Cyprinidae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Decapoda 13,654.8 59,285.9 443,387.3 85,306.5 51,178.0 51,154.2 51,130.3 33,640.3 16,150.2 

Dorosoma cepedianum 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Dorosoma spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Elops saurus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Fundulus spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Gobiidae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ictalurus spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Lepomis spp. 0.0 0.0 0.0 0.0 0.0 8,521.7 17,043.4 8,521.7 0.0 

Menidia beryllina 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Sciaenidae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Syngnathus scovelli 0.0 0.0 0.0 0.0 0.0 8,521.7 17,043.4 8,521.7 0.0 

Unidentified fish remains 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Unidentified egg 0.0 14,821.5 0.0 0.0 0.0 0.0 0.0 0.0 0.0 TOTAL 13,654.8 74,107.4 443,387.3 85,306.5 51,178.0 68,197.6 85,217.2 50,683.7 16,150.2 

SAMPLE WEEK 

Æ 09-03-06 09-10-06 09-17-06 09-24-06 10-01-06 10-08-06 10-15-06 10-22-06 10-29-06 11-0

Aplodinotus grunniens 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Catostomidae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Cyprinidae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Decapoda 0.0 12,072.4 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Dorosoma cepedianum 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Dorosoma spp. 0.0 0.0 0.0 0.0 0.0 0.0 7,050.7 0.0 0.0 Elops saurus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Fundulus spp. 0.0 0.0 10,712.8 0.0 0.0 0.0 0.0 0.0 0.0 Gobiidae 0.0 72,434.6 0.0 0.0 0.0 0.0 112,811.3 0.0 0.0 Ictalurus spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Lepomis spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Menidia beryllina 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Sciaenidae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Syngnathus scovelli 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Unidentified fish remains 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Unidentified egg 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 TOTAL 0.0 84,507.0 10,712.8 0.0 0.0 0.0 119,862.0 0.0 0.0 
Table B-3: Estimated total weekly entrainment (eggs and larvae) based on actual flow data during the MORNING sample b

columns were derived by averaging from adjacent weeks. 

N:\CLIENT\CLECO\Teche\IM&E Characterization\Characterization Report\Appendix\Appendix B-Final 1 IME Report.doc 

SAMPLE WEEK 

Æ 12-03-06 12-10-06 12-17-06 12-24-06 12-31-06 01-07-07 01-14-07 01-24-07 01-28-07 02-04-07 02-1

Aplodinotus grunniens 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Catostomidae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Cyprinidae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Decapoda 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Dorosoma cepedianum 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Dorosoma spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Elops saurus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Fundulus spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Gobiidae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ictalurus spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Lepomis spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Menidia beryllina 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Sciaenidae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Syngnathus scovelli 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Unidentified fish remains 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Unidentified egg 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

TOTAL 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

SAMPLE WEEK 

Æ 03-04-07 03-11-07 03-18-07 03-25-07 04-01-07 04-08-07 04-15-07 04-22-07 04-29-07 05-06-07 

Aplodinotus grunniens 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Catostomidae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Cyprinidae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Decapoda 0.0 0.0 0.0 0.0 0.0 0.0 0.0 9,048.8 0.0 0.0 Dorosoma cepedianum 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Dorosoma spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Elops saurus 0.0 0.0 4,315.6 4,315.6 8,631.1 0.0 0.0 0.0 0.0 0.0 Fundulus spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Gobiidae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ictalurus spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Lepomis spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Menidia beryllina 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Sciaenidae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Syngnathus scovelli 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Unidentified fish remains 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Unidentified egg 0.0 0.0 0.0 0.0 0.0 0.0 0.0 63,341.6 2,102,807.6 211,324.0 TOTAL 0.0 0.0 4,315.6 4,315.6 8,631.1 0.0 0.0 72,390.4 2,102,807.6 211,324.0 
Table B-4: Total weekly entrainment (eggs and larvae) densities (number per 100 m3) as sampled during the DAY sample block

columns were derived by averaging from adjacent weeks. 

N:\CLIENT\CLECO\Teche\IM&E Characterization\Characterization Report\Appendix\Appendix B-Final 1 IME Report.doc 

SAMPLE WEEK Æ 06-04-06 06-11-06 06-18-06 06-25-06 07-02-06 07-09-06 07-16-06 07-23-07 07-30-06 08-06-06 08-13-06 

Aplodinotus grunniens 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Catostomidae 0.0 0.0 0.0 1.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Cyprinidae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Decapoda 2.0 4.0 18.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Dorosoma cepedianum 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Dorosoma spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Elops saurus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Fundulus spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Gobiidae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ictalurus spp. 0.0 0.0 0.0 1.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Lepomis spp. 0.0 0.0 0.0 1.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Menidia beryllina 0.0 0.0 0.0 1.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Sciaenidae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Syngnathus scovelli 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Unidentified fish remains 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Unidentified egg 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

TOTAL 2.0 4.0 18.0 4.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

SAMPLE WEEK Æ 09-03-06 09-10-06 09-17-06 09-24-06 10-01-06 10-08-06 10-15-06 10-22-06 10-29-06 11-05-06 11-12-06 

Aplodinotus grunniens 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Catostomidae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Cyprinidae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Decapoda 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Dorosoma cepedianum 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Dorosoma spp. 0.0 1.0 0.0 0.0 0.0 0.0 5.0 0.0 0.0 0.0 0.0 Elops saurus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Fundulus spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Gobiidae 4.0 1.0 0.0 0.0 0.0 0.0 17.0 0.0 0.0 0.0 0.0 Ictalurus spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Lepomis spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Menidia beryllina 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Sciaenidae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Syngnathus scovelli 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Unidentified fish remains 0.0 0.0 0.0 1.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Unidentified egg 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 TOTAL 4.0 2.0 0.0 1.0 0.0 0.0 22.0 0.0 0.0 0.0 0.0 
Table B-4: Total weekly entrainment (eggs and larvae) densities (number per 100 m3) as sampled during the DAY sample block

columns were derived by averaging from adjacent weeks. 

N:\CLIENT\CLECO\Teche\IM&E Characterization\Characterization Report\Appendix\Appendix B-Final 1 IME Report.doc 

SAMPLE WEEK Æ 12-03-06 12-10-06 12-17-06 12-24-06 12-31-06 01-07-07 01-14-07 01-24-07 01-28-07 02-04-07 02-1

Aplodinotus grunniens 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Catostomidae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Cyprinidae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Decapoda 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Dorosoma cepedianum 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Dorosoma spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Elops saurus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Fundulus spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Gobiidae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ictalurus spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Lepomis spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Menidia beryllina 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Sciaenidae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Syngnathus scovelli 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Unidentified fish remains 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Unidentified egg 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

TOTAL 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

SAMPLE WEEK Æ 03-04-07 03-11-07 03-18-07 03-25-07 04-01-07 04-08-07 04-15-07 04-22-07 04-29-07 05-06-07 05-1

Aplodinotus grunniens 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Catostomidae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Cyprinidae 0.0 0.0 0.0 0.0 0.0 1.0 0.0 0.0 0.0 0.0 Decapoda 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Dorosoma cepedianum 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Dorosoma spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Elops saurus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Fundulus spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Gobiidae 0.0 0.0 0.0 0.0 0.0 1.0 0.0 0.0 0.0 0.0 Ictalurus spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Lepomis spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Menidia beryllina 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Sciaenidae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Syngnathus scovelli 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Unidentified fish remains 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 1.0 2Unidentified egg 0.0 0.0 0.0 0.0 0.0 0.0 0.0 3.0 0.0 0.0 TOTAL 0.0 0.0 0.0 0.0 0.0 2.0 0.0 3.0 0.0 1.0 2
Table B-5: Estimated total weekly entrainment (eggs and larvae) based on design flow data during the DAY sample block (Estim

design flow data. Data in SHADED columns were derived by averaging from adjacent weeks. 

N:\CLIENT\CLECO\Teche\IM&E Characterization\Characterization Report\Appendix\Appendix B-Final 1 IME Report.doc 

SAMPLE WEEK Æ 06-04-06 06-11-06 06-18-06 06-25-06 07-02-06 07-09-06 07-16-06 07-23-07 07-30-06 08

Aplodinotus grunniens 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Catostomidae 0.0 0.0 0.0 22,385.4 0.0 0.0 0.0 0.0 0.0 

Cyprinidae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Decapoda 44,770.8 89,541.6 402,937.4 0.0 0.0 0.0 0.0 0.0 0.0 Dorosoma cepedianum 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Dorosoma spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Elops saurus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Fundulus spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Gobiidae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ictalurus spp. 0.0 0.0 0.0 22,385.4 0.0 0.0 0.0 0.0 0.0 Lepomis spp. 0.0 0.0 0.0 22,385.4 0.0 0.0 0.0 0.0 0.0 

Menidia beryllina 0.0 0.0 0.0 22,385.4 0.0 0.0 0.0 0.0 0.0 

Sciaenidae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Syngnathus scovelli 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Unidentified fish remains 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Unidentified egg 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

TOTAL 44,770.8 89,541.6 402,937.4 89,541.6 0.0 0.0 0.0 0.0 0.0 

SAMPLE WEEK Æ 09-03-06 09-10-06 09-17-06 09-24-06 10-01-06 10-08-06 10-15-06 10-22-06 10-29-06 11

Aplodinotus grunniens 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Catostomidae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Cyprinidae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Decapoda 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Dorosoma cepedianum 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Dorosoma spp. 0.0 22,385.4 0.0 0.0 0.0 0.0 111,927.1 0.0 0.0 Elops saurus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Fundulus spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Gobiidae 89,541.6 22,385.4 0.0 0.0 0.0 0.0 380,552.0 0.0 0.0 Ictalurus spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Lepomis spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Menidia beryllina 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Sciaenidae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Syngnathus scovelli 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Unidentified fish remains 0.0 0.0 0.0 22,385.4 0.0 0.0 0.0 0.0 0.0 Unidentified egg 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 TOTAL 89,541.6 44,770.8 0.0 22,385.4 0.0 0.0 492,479.0 0.0 0.0 
Table B-5: Estimated total weekly entrainment (eggs and larvae) based on design flow data during the DAY sample block (Estim

design flow data. Data in SHADED columns were derived by averaging from adjacent weeks. 

N:\CLIENT\CLECO\Teche\IM&E Characterization\Characterization Report\Appendix\Appendix B-Final 1 IME Report.doc 

SAMPLE WEEK Æ 12-03-06 12-10-06 12-17-06 12-24-06 12-31-06 01-07-07 01-14-07 01-24-07 01-28-07 02-04-07 02-1

Aplodinotus grunniens 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Catostomidae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Cyprinidae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Decapoda 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Dorosoma cepedianum 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Dorosoma spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Elops saurus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Fundulus spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Gobiidae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ictalurus spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Lepomis spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Menidia beryllina 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Sciaenidae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Syngnathus scovelli 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Unidentified fish remains 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Unidentified egg 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

TOTAL 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

SAMPLE WEEK Æ 03-04-07 03-11-07 03-18-07 03-25-07 04-01-07 04-08-07 04-15-07 04-22-07 04-29-07 05-06-07 05-1

Aplodinotus grunniens 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Catostomidae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Cyprinidae 0.0 0.0 0.0 0.0 0.0 22,385.4 0.0 0.0 0.0 0.0 Decapoda 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Dorosoma cepedianum 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Dorosoma spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Elops saurus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 22,38Fundulus spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Gobiidae 0.0 0.0 0.0 0.0 0.0 22,385.4 0.0 0.0 0.0 0.0 Ictalurus spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Lepomis spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Menidia beryllina 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Sciaenidae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Syngnathus scovelli 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Unidentified fish remains 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 22,385.4 514,86Unidentified egg 0.0 0.0 0.0 0.0 0.0 0.0 0.0 67,156.2 0.0 0.0 89,54TOTAL 0.0 0.0 0.0 0.0 0.0 44,770.8 0.0 67,156.2 0.0 22,385.4 626,79
Table B-6: Estimated total weekly entrainment (eggs and larvae) based on actual flow data during the DAY sample block. D

were derived by averaging from adjacent weeks. 

N:\CLIENT\CLECO\Teche\IM&E Characterization\Characterization Report\Appendix\Appendix B-Final 1 IME Report.doc . 

SAMPLE WEEK Æ 06-04-06 06-11-06 06-18-06 06-25-06 07-02-06 07-09-06 07-16-06 07-23-07 07-30-06 0

Aplodinotus grunniens 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Catostomidae 0.0 0.0 0.0 17,061.3 0.0 0.0 0.0 0.0 0.0 

Cyprinidae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Decapoda 27,309.6 59,285.9 306,960.4 0.0 0.0 0.0 0.0 0.0 0.0 

Dorosoma cepedianum 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Dorosoma spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Elops saurus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Fundulus spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Gobiidae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Ictalurus spp. 0.0 0.0 0.0 17,061.3 0.0 0.0 0.0 0.0 0.0 

Lepomis spp. 0.0 0.0 0.0 17,061.3 0.0 0.0 0.0 0.0 0.0 

Menidia beryllina 0.0 0.0 0.0 17,061.3 0.0 0.0 0.0 0.0 0.0 

Sciaenidae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Syngnathus scovelli 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Unidentified fish remains 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Unidentified egg 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

TOTAL 27,309.6 59,285.9 306,960.4 68,245.2 0.0 0.0 0.0 0.0 0.0 

SAMPLE WEEK Æ 09-03-06 09-10-06 09-17-06 09-24-06 10-01-06 10-08-06 10-15-06 10-22-06 10-29-06 11

Aplodinotus grunniens 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Catostomidae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Cyprinidae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Decapoda 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Dorosoma cepedianum 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Dorosoma spp. 0.0 12,072.4 0.0 0.0 0.0 0.0 35,253.5 0.0 0.0 Elops saurus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Fundulus spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Gobiidae 40,408.5 12,072.4 0.0 0.0 0.0 0.0 119,862.0 0.0 0.0 Ictalurus spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Lepomis spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Menidia beryllina 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Sciaenidae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Syngnathus scovelli 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Unidentified fish remains 0.0 0.0 0.0 9,462.5 0.0 0.0 0.0 0.0 0.0 Unidentified egg 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 TOTAL 40,408.5 24,144.9 0.0 9,462.5 0.0 0.0 155,115.6 0.0 0.0 
Table B-6: Estimated total weekly entrainment (eggs and larvae) based on actual flow data during the DAY sample block. D

were derived by averaging from adjacent weeks. 

N:\CLIENT\CLECO\Teche\IM&E Characterization\Characterization Report\Appendix\Appendix B-Final 1 IME Report.doc 

SAMPLE WEEK Æ 12-03-06 12-10-06 12-17-06 12-24-06 12-31-06 01-07-07 01-14-07 01-24-07 01-28-07 0

Aplodinotus grunniens 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Catostomidae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Cyprinidae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Decapoda 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Dorosoma cepedianum 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Dorosoma spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Elops saurus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Fundulus spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Gobiidae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Ictalurus spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Lepomis spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Menidia beryllina 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Sciaenidae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Syngnathus scovelli 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Unidentified fish remains 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Unidentified egg 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

TOTAL 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

SAMPLE WEEK Æ 03-04-07 03-11-07 03-18-07 03-25-07 04-01-07 04-08-07 04-15-07 04-22-07 04-29-07 05-06-0

Aplodinotus grunniens 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.Catostomidae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.

Cyprinidae 0.0 0.0 0.0 0.0 0.0 8,631.1 0.0 0.0 0.0 0.Decapoda 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.Dorosoma cepedianum 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.Dorosoma spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.Elops saurus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.Fundulus spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.Gobiidae 0.0 0.0 0.0 0.0 0.0 8,631.1 0.0 0.0 0.0 0.Ictalurus spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.Lepomis spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.Menidia beryllina 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.Sciaenidae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.Syngnathus scovelli 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.Unidentified fish remains 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 16,255.

Unidentified egg 0.0 0.0 0.0 0.0 0.0 0.0 0.0 27,146.4 0.0 0.

TOTAL 0.0 0.0 0.0 0.0 0.0 17,262.2 0.0 27,146.4 0.0 16,255.
Table B-7: Total weekly entrainment (eggs and larvae) densities (number per 100 m3) as sampled during the NIGHT sample blo

columns were derived by averaging from adjacent weeks. 

N:\CLIENT\CLECO\Teche\IM&E Characterization\Characterization Report\Appendix\Appendix B-Final 1 IME Report.doc 

SAMPLE WEEK Æ 06-04-06 06-11-06 06-18-06 06-25-06 07-02-06 07-09-06 07-16-06 07-23-07 07-30-06 08-06-06 08-13-06 

Aplodinotus grunniens 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Catostomidae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Cyprinidae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Decapoda 2.0 1.0 4.0 0.0 2.0 1.0 0.0 0.0 0.0 0.0 0.0 Dorosoma cepedianum 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Dorosoma spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Elops saurus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Fundulus spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Gobiidae 0.0 2.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ictalurus spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Lepomis spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Menidia beryllina 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Sciaenidae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Syngnathus scovelli 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Unidentified fish remains 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Unidentified egg 0.0 17.0 12.0 0.0 1.0 1.0 1.0 0.5 0.0 0.0 0.0 

TOTAL 2.0 20.0 16.0 0.0 3.0 2.0 1.0 0.5 0.0 0.0 0.0 

SAMPLE WEEK Æ 09-03-06 09-10-06 09-17-06 09-24-06 10-01-06 10-08-06 10-15-06 10-22-06 10-29-06 11-05-06 11-12-06 

Aplodinotus grunniens 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Catostomidae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Cyprinidae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Decapoda 0.0 2.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Dorosoma cepedianum 0.0 2.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Dorosoma spp. 0.0 1.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Elops saurus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Fundulus spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Gobiidae 0.0 0.0 0.0 0.0 0.0 0.0 2.0 0.0 0.0 0.0 0.0 Ictalurus spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Lepomis spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Menidia beryllina 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Sciaenidae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Syngnathus scovelli 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Unidentified fish remains 0.0 0.0 1.0 1.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Unidentified egg 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 TOTAL 0.0 5.0 1.0 1.0 0.0 0.0 2.0 0.0 0.0 0.0 0.0 
Table B-7: Total weekly entrainment (eggs and larvae) densities (number per 100 m3) as sampled during the NIGHT sample blo

columns were derived by averaging from adjacent weeks. 

N:\CLIENT\CLECO\Teche\IM&E Characterization\Characterization Report\Appendix\Appendix B-Final 1 IME Report.doc 

SAMPLE WEEK Æ 12-03-06 12-10-06 12-17-06 12-24-06 12-31-06 01-07-07 01-14-07 01-24-07 01-28-07 02-04-07 02-1

Aplodinotus grunniens 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Catostomidae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Cyprinidae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Decapoda 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Dorosoma cepedianum 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Dorosoma spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Elops saurus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Fundulus spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Gobiidae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ictalurus spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Lepomis spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Menidia beryllina 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Sciaenidae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Syngnathus scovelli 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Unidentified fish remains 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Unidentified egg 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

TOTAL 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

SAMPLE WEEK Æ 03-04-07 03-11-07 03-18-07 03-25-07 04-01-07 04-08-07 04-15-07 04-22-07 04-29-07 05-06-07 05-1

Aplodinotus grunniens 0.0 0.0 0.0 0.0 0.0 1.0 0.0 0.0 0.0 0.0 Catostomidae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Cyprinidae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Decapoda 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Dorosoma cepedianum 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Dorosoma spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Elops saurus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Fundulus spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Gobiidae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ictalurus spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Lepomis spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Menidia beryllina 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Sciaenidae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 1.0 0.0 0.0 Syngnathus scovelli 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Unidentified fish remains 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 1.0 0.0 Unidentified egg 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 110.0 363.0 13TOTAL 0.0 0.0 0.0 0.0 0.0 1.0 0.0 1.0 111.0 363.0 13
Table B-8: Estimated total weekly entrainment (eggs and larvae) based on design flow data during the NIGHT sample block (E

100% design flow) . Data in SHADED columns were derived by averaging from adjacent weeks. 

N:\CLIENT\CLECO\Teche\IM&E Characterization\Characterization Report\Appendix\Appendix B-Final 1 IME Report.doc 

SAMPLE WEEK Æ 06-04-06 06-11-06 06-18-06 06-25-06 07-02-06 07-09-06 07-16-06 07-23-07 07-30-06 08-06

Aplodinotus grunniens 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0Catostomidae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0

Cyprinidae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0

Decapoda 44,770.8 22,385.4 89,541.6 0.0 44,770.8 22,385.4 0.0 0.0 0.0 0

Dorosoma cepedianum 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0

Dorosoma spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0

Elops saurus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0

Fundulus spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0

Gobiidae 0.0 44,770.8 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0

Ictalurus spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0

Lepomis spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0

Menidia beryllina 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0

Sciaenidae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0

Syngnathus scovelli 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0

Unidentified fish remains 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0

Unidentified egg 0.0 380,552.0 268,624.9 0.0 22,385.4 22,385.4 22,385.4 11,192.7 0.0 0

TOTAL 44,770.8 447,708.2 358,166.6 0.0 67,156.2 44,770.8 22,385.4 11,192.7 0.0 0

SAMPLE WEEK Æ 09-03-06 09-10-06 09-17-06 09-24-06 10-01-06 10-08-06 10-15-06 10-22-06 10-29-06 11-05-06 

Aplodinotus grunniens 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Catostomidae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Cyprinidae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Decapoda 0.0 44,770.8 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Dorosoma cepedianum 0.0 44,770.8 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Dorosoma spp. 0.0 22,385.4 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Elops saurus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Fundulus spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Gobiidae 0.0 0.0 0.0 0.0 0.0 0.0 44,770.8 0.0 0.0 0.0 Ictalurus spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Lepomis spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Menidia beryllina 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Sciaenidae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Syngnathus scovelli 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Unidentified fish remains 0.0 0.0 22,385.4 22,385.4 0.0 0.0 0.0 0.0 0.0 0.0 Unidentified egg 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 TOTAL 0.0 111,927.1 22,385.4 22,385.4 0.0 0.0 44,770.8 0.0 0.0 0.0 
Table B-8: Estimated total weekly entrainment (eggs and larvae) based on design flow data during the NIGHT sample block (E

100% design flow) . Data in SHADED columns were derived by averaging from adjacent weeks. 

N:\CLIENT\CLECO\Teche\IM&E Characterization\Characterization Report\Appendix\Appendix B-Final 1 IME Report.doc 

SAMPLE WEEK Æ 12-03-06 12-10-06 12-17-06 12-24-06 12-31-06 01-07-07 01-14-07 01-24-07 01-28-07 02-04-07 02-1

Aplodinotus grunniens 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Catostomidae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Cyprinidae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Decapoda 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Dorosoma cepedianum 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Dorosoma spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Elops saurus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Fundulus spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Gobiidae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ictalurus spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Lepomis spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Menidia beryllina 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Sciaenidae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Syngnathus scovelli 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Unidentified fish remains 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Unidentified egg 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

TOTAL 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

SAMPLE WEEK Æ 03-04-07 03-11-07 03-18-07 03-25-07 04-01-07 04-08-07 04-15-07 04-22-07 04-29-07 05-06-07 

Aplodinotus grunniens 0.0 0.0 0.0 0.0 0.0 22,385.4 0.0 0.0 0.0 0.0 Catostomidae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Cyprinidae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Decapoda 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Dorosoma cepedianum 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Dorosoma spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Elops saurus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Fundulus spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Gobiidae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ictalurus spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Lepomis spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Menidia beryllina 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Sciaenidae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 22,385.4 0.0 0.0 Syngnathus scovelli 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Unidentified fish remains 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 22,385.4 0.0 Unidentified egg 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 2,462,395.2 8,125,904.3 TOTAL 0.0 0.0 0.0 0.0 0.0 22,385.4 0.0 22,385.4 2,484,780.6 8,125,904.3 
Table B-9: Estimated total weekly entrainment (eggs and larvae) based on actual flow data during the NIGHT sample block. D

columns were derived by averaging from adjacent weeks. 

N:\CLIENT\CLECO\Teche\IM&E Characterization\Characterization Report\Appendix\Appendix B-Final 1 IME Report.doc 

SAMPLE WEEK Æ 06-04-06 06-11-06 06-18-06 06-25-06 07-02-06 07-09-06 07-16-06 07-23-07 07-30-06 08

Aplodinotus grunniens 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Catostomidae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Cyprinidae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Decapoda 27,309.6 14,821.5 68,213.4 0.0 34,118.7 17,059.3 0.0 0.0 0.0 

Dorosoma cepedianum 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Dorosoma spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Elops saurus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Fundulus spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Gobiidae 0.0 29,643.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Ictalurus spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Lepomis spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Menidia beryllina 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Sciaenidae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Syngnathus scovelli 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Unidentified fish remains 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Unidentified egg 0.0 251,965.1 204,640.3 0.0 17,059.3 17,051.4 17,043.4 8,521.7 0.0 

TOTAL 27,309.6 296,429.5 272,853.7 0.0 51,178.0 34,110.7 17,043.4 8,521.7 0.0 

SAMPLE WEEK Æ 09-03-06 09-10-06 09-17-06 09-24-06 10-01-06 10-08-06 10-15-06 10-22-06 10-29-06 11-05-

Aplodinotus grunniens 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0Catostomidae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0Cyprinidae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0Decapoda 0.0 24,144.9 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0Dorosoma cepedianum 0.0 24,144.9 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0Dorosoma spp. 0.0 12,072.4 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0Elops saurus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0Fundulus spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0Gobiidae 0.0 0.0 0.0 0.0 0.0 0.0 14,101.4 0.0 0.0 0Ictalurus spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0Lepomis spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0Menidia beryllina 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0Sciaenidae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0Syngnathus scovelli 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0Unidentified fish remains 0.0 0.0 10,712.8 9,462.5 0.0 0.0 0.0 0.0 0.0 0Unidentified egg 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0TOTAL 0.0 60,362.2 10,712.8 9,462.5 0.0 0.0 14,101.4 0.0 0.0 0
Table B-9: Estimated total weekly entrainment (eggs and larvae) based on actual flow data during the NIGHT sample block. D

columns were derived by averaging from adjacent weeks. 

N:\CLIENT\CLECO\Teche\IM&E Characterization\Characterization Report\Appendix\Appendix B-Final 1 IME Report.doc 

SAMPLE WEEK Æ 12-03-06 12-10-06 12-17-06 12-24-06 12-31-06 01-07-07 01-14-07 01-24-07 01-28-07 0

Aplodinotus grunniens 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Catostomidae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Cyprinidae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Decapoda 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Dorosoma cepedianum 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Dorosoma spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Elops saurus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Fundulus spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Gobiidae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Ictalurus spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Lepomis spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Menidia beryllina 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Sciaenidae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Syngnathus scovelli 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Unidentified fish remains 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Unidentified egg 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 TOTAL 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

SAMPLE WEEK Æ 03-04-07 03-11-07 03-18-07 03-25-07 04-01-07 04-08-07 04-15-07 04-22-07 04-29-07 05-06-07 

Aplodinotus grunniens 0.0 0.0 0.0 0.0 0.0 8,631.1 0.0 0.0 0.0 0.0 Catostomidae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Cyprinidae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Decapoda 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Dorosoma cepedianum 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Dorosoma spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Elops saurus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Fundulus spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Gobiidae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ictalurus spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Lepomis spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Menidia beryllina 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Sciaenidae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 9,048.8 0.0 0.0 Syngnathus scovelli 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Unidentified fish remains 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 12,155.0 0.0 

Unidentified egg 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 1,337,045.3 5,900,816.9 

TOTAL 0.0 0.0 0.0 0.0 0.0 8,631.1 0.0 9,048.8 1,349,200.3 5,900,816.9 
Table B-10: Total weekly entrainment (juvenile) densities (number per 100 m3) as sampled during the MORNING sample block

columns were derived by averaging from adjacent weeks.

N:\CLIENT\CLECO\Teche\IM&E Characterization\Characterization Report\Appendix\Appendix B-Final 1 IME Report.doc 

SAMPLE WEEK Æ 06-04-06 06-11-06 06-18-06 06-25-06 07-02-06 07-09-06 07-16-06 07-23-07 07-30-06 08-06-06 08-13-06 

Anchoa mitchilli 20.0 25.0 1.0 0.0 16.0 16.0 16.0 10.0 4.0 9.5 15.0 Anguilla rostrata 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.5 1.0 0.5 0.0 

Aplodinotus grunniens 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Ariopsis felis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Brevoortia patronus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Callinectes sapidus 1.0 0.0 0.0 1.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Citharichthys spilopterus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ctenogobius shufeldti 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Cynoscion arenarius 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Dorosoma petenense 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Farfantepenaeus aztecus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Fundulus spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Gobiidae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Gobioides broussonetii 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Gobiosoma bosc 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Gobiosoma robustum 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Gobiosoma spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Heterandria formosa 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Ictaluridae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Ictalurus furcatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Ictalurus punctatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Larimus fasciatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Lepomis spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Macrobrachium ohione 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.5 1.0 1.5 2.0 

Micropogonias undulatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Phyllopodous branchiopoda 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Sciaenidae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Squilla empusa 10.0 9.0 19.0 0.0 12.0 16.5 21.0 10.5 0.0 0.0 0.0 

Syngnathus scovelli 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Taphromysis louisinae 4.0 2.0 0.0 1.0 0.0 4.0 8.0 4.5 1.0 0.5 0.0 

Trinectes maculatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Unidentified fish remains 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Unidentified shrimp remains 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 TOTAL 35.0 36.0 20.0 2.0 28.0 36.5 45.0 26.0 7.0 12.0 17.0 
Table B-10: Total weekly entrainment (juvenile) densities (number per 100 m3) as sampled during the MORNING sample block

columns were derived by averaging from adjacent weeks.

N:\CLIENT\CLECO\Teche\IM&E Characterization\Characterization Report\Appendix\Appendix B-Final 1 IME Report.doc 

SAMPLE WEEK Æ 09-03-06 09-10-06 09-17-06 09-24-06 10-01-06 10-08-06 10-15-06 10-22-06 10-29-06 11-05-06 11-12-06 

Anchoa mitchilli 2.0 57.0 7.0 5.0 3.0 8.0 18.0 63.0 63.0 9.0 4.0 Anguilla rostrata 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Aplodinotus grunniens 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ariopsis felis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Brevoortia patronus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Callinectes sapidus 0.0 0.0 7.0 0.0 4.0 0.0 8.0 0.0 0.0 0.0 0.0 Citharichthys spilopterus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ctenogobius shufeldti 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Cynoscion arenarius 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Dorosoma petenense 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Farfantepenaeus aztecus 0.0 0.0 0.0 0.0 1.0 0.0 3.0 0.0 0.0 0.0 0.0 Fundulus spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Gobiidae 0.0 7.0 0.0 0.0 4.0 1.0 3.0 0.0 0.0 0.0 0.0 Gobioides broussonetii 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Gobiosoma bosc 0.0 0.0 0.0 0.0 0.0 0.0 1.0 0.0 0.0 0.0 0.0 Gobiosoma robustum 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Gobiosoma spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Heterandria formosa 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ictaluridae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ictalurus furcatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ictalurus punctatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Larimus fasciatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Lepomis spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Macrobrachium ohione 0.0 0.0 0.0 1.0 0.0 2.0 0.0 1.0 0.0 1.0 0.0 Micropogonias undulatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Phyllopodous branchiopoda 0.0 0.0 0.0 0.0 0.0 0.0 4.0 0.0 0.0 0.0 0.0 Sciaenidae 0.0 0.0 0.0 0.0 0.0 0.0 15.0 0.0 0.0 0.0 0.0 Squilla empusa 0.0 4.0 0.0 1.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Syngnathus scovelli 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Taphromysis louisinae 3.0 15.0 0.0 8.0 17.0 14.0 1,027.0 1.0 64.0 4.0 12.0 

Trinectes maculatus 0.0 1.0 0.0 0.0 0.0 0.0 1.0 0.0 0.0 0.0 0.0 Unidentified fish remains 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Unidentified shrimp remains 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 TOTAL 5.0 84.0 14.0 15.0 29.0 25.0 1,080.0 65.0 127.0 14.0 16.0 
Table B-10: Total weekly entrainment (juvenile) densities (number per 100 m3) as sampled during the MORNING sample block

columns were derived by averaging from adjacent weeks.

N:\CLIENT\CLECO\Teche\IM&E Characterization\Characterization Report\Appendix\Appendix B-Final 1 IME Report.doc 

SAMPLE WEEK Æ 12-03-06 12-10-06 12-17-06 12-24-06 12-31-06 01-07-07 01-14-07 01-24-07 01-28-07 02-04-07 

Anchoa mitchilli 32.0 16.5 1.0 0.5 0.5 0.5 0.0 0.0 0.0 4.0 Anguilla rostrata 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Aplodinotus grunniens 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ariopsis felis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Brevoortia patronus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Callinectes sapidus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Citharichthys spilopterus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ctenogobius shufeldti 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Cynoscion arenarius 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Dorosoma petenense 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Farfantepenaeus aztecus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Fundulus spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Gobiidae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Gobioides broussonetii 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Gobiosoma bosc 0.0 1.5 3.0 1.5 1.5 1.5 0.0 0.0 0.0 0.0 

Gobiosoma robustum 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Gobiosoma spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Heterandria formosa 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Ictaluridae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.5 1.0 0.0 

Ictalurus furcatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Ictalurus punctatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Larimus fasciatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Lepomis spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Macrobrachium ohione 1.0 1.0 1.0 1.0 1.0 1.0 1.0 0.5 0.0 0.0 

Micropogonias undulatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Phyllopodous branchiopoda 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Sciaenidae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Squilla empusa 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Syngnathus scovelli 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Taphromysis louisinae 22.0 11.5 1.0 0.5 0.5 0.5 0.0 1.0 2.0 7.0 

Trinectes maculatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Unidentified fish remains 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Unidentified shrimp remains 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

TOTAL 55.0 30.5 6.0 3.5 3.5 3.5 1.0 2.0 3.0 11.0 
Table B-10: Total weekly entrainment (juvenile) densities (number per 100 m3) as sampled during the MORNING sample block

columns were derived by averaging from adjacent weeks.

N:\CLIENT\CLECO\Teche\IM&E Characterization\Characterization Report\Appendix\Appendix B-Final 1 IME Report.doc 

SAMPLE WEEK Æ 03-04-07 03-11-07 03-18-07 03-25-07 04-01-07 04-08-07 04-15-07 04-22-07 04-29-07 05-06-07 05-1

Anchoa mitchilli 6.0 1.0 2.0 2.0 3.0 3.0 0.0 0.0 3.0 0.0 1Anguilla rostrata 0.0 0.0 0.5 0.5 1.0 0.0 2.0 0.0 0.0 0.0 Aplodinotus grunniens 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ariopsis felis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Brevoortia patronus 0.0 0.0 0.0 0.0 0.0 30.0 2.0 7.0 6.0 0.0 1Callinectes sapidus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Citharichthys spilopterus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ctenogobius shufeldti 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Cynoscion arenarius 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Dorosoma petenense 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Farfantepenaeus aztecus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Fundulus spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Gobiidae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Gobioides broussonetii 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Gobiosoma bosc 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Gobiosoma robustum 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Gobiosoma spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Heterandria formosa 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ictaluridae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ictalurus furcatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ictalurus punctatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Larimus fasciatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Lepomis spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Macrobrachium ohione 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Micropogonias undulatus 0.0 0.0 0.0 0.0 0.0 0.0 1.0 0.0 0.0 0.0 Phyllopodous branchiopoda 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Sciaenidae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Squilla empusa 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Syngnathus scovelli 0.0 0.0 0.0 0.0 0.0 0.0 0.0 1.0 0.0 0.0 Taphromysis louisinae 2.0 0.0 1.0 1.0 2.0 1.0 31.0 0.0 39.0 1.0 53Trinectes maculatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Unidentified fish remains 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Unidentified shrimp remains 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 TOTAL 8.0 1.0 3.5 3.5 6.0 34.0 36.0 8.0 48.0 1.0 56
Table B-11: Estimated total weekly entrainment (juvenile) based on design flow data during the MORNING sample block (Esti

design flow). Data in SHADED columns were derived by averaging from adjacent weeks. 

N:\CLIENT\CLECO\Teche\IM&E Characterization\Characterization Report\Appendix\Appendix B-Final 1 IME Report.doc 

SAMPLE WEEK Æ 06-04-06 06-11-06 06-18-06 06-25-06 07-02-06 07-09-06 07-16-06 07-23-07 07-30-06 08-0

Anchoa mitchilli 447,708.2 559,635.3 22,385.4 0.0 358,166.6 358,166.6 358,166.6 223,854.1 89,541.6 212,66Anguilla rostrata 0.0 0.0 0.0 0.0 0.0 0.0 0.0 11,192.7 22,385.4 11,19Aplodinotus grunniens 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ariopsis felis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Brevoortia patronus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Callinectes sapidus 22,385.4 0.0 0.0 22,385.4 0.0 0.0 0.0 0.0 0.0 Citharichthys spilopterus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ctenogobius shufeldti 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Cynoscion arenarius 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Dorosoma petenense 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Farfantepenaeus aztecus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Fundulus spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Gobiidae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Gobioides broussonetii 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Gobiosoma bosc 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Gobiosoma robustum 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Gobiosoma spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Heterandria formosa 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ictaluridae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ictalurus furcatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ictalurus punctatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Larimus fasciatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Lepomis spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Macrobrachium ohione 0.0 0.0 0.0 0.0 0.0 0.0 0.0 11,192.7 22,385.4 33,57Micropogonias undulatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Phyllopodous branchiopoda 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Sciaenidae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Squilla empusa 223,854.1 201,468.7 425,322.8 0.0 268,624.9 369,359.3 470,093.6 235,046.8 0.0 Syngnathus scovelli 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Taphromysis louisinae 89,541.6 44,770.8 0.0 22,385.4 0.0 89,541.6 179,083.3 100,734.4 22,385.4 11,19Trinectes maculatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Unidentified fish remains 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Unidentified shrimp remains 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 TOTAL 783,489.4 805,874.8 447,708.2 44,770.8 626,791.5 817,067.5 1,007,343.5 582,020.7 156,697.9 268,62
Table B-11: Estimated total weekly entrainment (juvenile) based on design flow data during the MORNING sample block (Esti

design flow). Data in SHADED columns were derived by averaging from adjacent weeks. 

N:\CLIENT\CLECO\Teche\IM&E Characterization\Characterization Report\Appendix\Appendix B-Final 1 IME Report.doc 

SAMPLE WEEK Æ 09-03-06 09-10-06 09-17-06 09-24-06 10-01-06 10-08-06 10-15-06 10-22-06 10-29-06 11-05

Anchoa mitchilli 44,770.8 1,275,968.4 156,697.9 111,927.1 67,156.2 179,083.3 402,937.4 1,410,280.9 1,410,280.9 201,46

Anguilla rostrata 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Aplodinotus grunniens 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ariopsis felis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Brevoortia patronus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Callinectes sapidus 0.0 0.0 156,697.9 0.0 89,541.6 0.0 179,083.3 0.0 0.0 Citharichthys spilopterus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ctenogobius shufeldti 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Cynoscion arenarius 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Dorosoma petenense 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Farfantepenaeus aztecus 0.0 0.0 0.0 0.0 22,385.4 0.0 67,156.2 0.0 0.0 Fundulus spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Gobiidae 0.0 156,697.9 0.0 0.0 89,541.6 22,385.4 67,156.2 0.0 0.0 Gobioides broussonetii 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Gobiosoma bosc 0.0 0.0 0.0 0.0 0.0 0.0 22,385.4 0.0 0.0 Gobiosoma robustum 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Gobiosoma spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Heterandria formosa 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ictaluridae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ictalurus furcatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ictalurus punctatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Larimus fasciatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Lepomis spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Macrobrachium ohione 0.0 0.0 0.0 22,385.4 0.0 44,770.8 0.0 22,385.4 0.0 22,38Micropogonias undulatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Phyllopodous branchiopoda 0.0 0.0 0.0 0.0 0.0 0.0 89,541.6 0.0 0.0 Sciaenidae 0.0 0.0 0.0 0.0 0.0 0.0 335,781.2 0.0 0.0 Squilla empusa 0.0 89,541.6 0.0 22,385.4 0.0 0.0 0.0 0.0 0.0 Syngnathus scovelli 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Taphromysis louisinae 67,156.2 335,781.2 0.0 179,083.3 380,552.0 313,395.8 22,989,817.3 22,385.4 1,432,666.3 89,54Trinectes maculatus 0.0 22,385.4 0.0 0.0 0.0 0.0 22,385.4 0.0 0.0 Unidentified fish remains 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Unidentified shrimp remains 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

TOTAL 111,927.1 1,880,374.5 313,395.8 335,781.2 649,176.9 559,635.3 24,176,244.1 1,455,051.7 2,842,947.2 313,39
Table B-11: Estimated total weekly entrainment (juvenile) based on design flow data during the MORNING sample block (Esti

design flow). Data in SHADED columns were derived by averaging from adjacent weeks. 

N:\CLIENT\CLECO\Teche\IM&E Characterization\Characterization Report\Appendix\Appendix B-Final 1 IME Report.doc 

SAMPLE WEEK Æ 12-03-06 12-10-06 12-17-06 12-24-06 12-31-06 01-07-07 01-14-07 01-24-07 01-28-07 

Anchoa mitchilli 716,333.2 369,359.3 22,385.4 11,192.7 11,192.7 11,192.7 0.0 0.0 0.0 Anguilla rostrata 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Aplodinotus grunniens 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Ariopsis felis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Brevoortia patronus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Callinectes sapidus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Citharichthys spilopterus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ctenogobius shufeldti 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Cynoscion arenarius 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Dorosoma petenense 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Farfantepenaeus aztecus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Fundulus spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Gobiidae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Gobioides broussonetii 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Gobiosoma bosc 0.0 33,578.1 67,156.2 33,578.1 33,578.1 33,578.1 0.0 0.0 0.0 Gobiosoma robustum 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Gobiosoma spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Heterandria formosa 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ictaluridae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 11,192.7 22,385.4 Ictalurus furcatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Ictalurus punctatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Larimus fasciatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Lepomis spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Macrobrachium ohione 22,385.4 22,385.4 22,385.4 22,385.4 22,385.4 22,385.4 22,385.4 11,192.7 0.0 Micropogonias undulatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Phyllopodous branchiopoda 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Sciaenidae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Squilla empusa 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Syngnathus scovelli 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Taphromysis louisinae 492,479.0 257,432.2 22,385.4 11,192.7 11,192.7 11,192.7 0.0 22,385.4 44,770.8 1

Trinectes maculatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Unidentified fish remains 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Unidentified shrimp remains 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

TOTAL 1,231,197.6 682,755.0 134,312.5 78,348.9 78,348.9 78,348.9 22,385.4 44,770.8 67,156.2 2
Table B-11: Estimated total weekly entrainment (juvenile) based on design flow data during the MORNING sample block (Esti

design flow). Data in SHADED columns were derived by averaging from adjacent weeks. 

N:\CLIENT\CLECO\Teche\IM&E Characterization\Characterization Report\Appendix\Appendix B-Final 1 IME Report.doc 

SAMPLE WEEK Æ 03-04-07 03-11-07 03-18-07 03-25-07 04-01-07 04-08-07 04-15-07 04-22-07 04-29-07 05-06-07 05-

Anchoa mitchilli 134,312.5 22,385.4 44,770.8 44,770.8 67,156.2 67,156.2 0.0 0.0 67,156.2 0.0 313Anguilla rostrata 0.0 0.0 11,192.7 11,192.7 22,385.4 0.0 44,770.8 0.0 0.0 0.0 Aplodinotus grunniens 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ariopsis felis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Brevoortia patronus 0.0 0.0 0.0 0.0 0.0 671,562.3 44,770.8 156,697.9 134,312.5 0.0 425Callinectes sapidus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Citharichthys spilopterus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ctenogobius shufeldti 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Cynoscion arenarius 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Dorosoma petenense 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Farfantepenaeus aztecus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Fundulus spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Gobiidae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Gobioides broussonetii 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Gobiosoma bosc 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Gobiosoma robustum 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Gobiosoma spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Heterandria formosa 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ictaluridae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ictalurus furcatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ictalurus punctatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Larimus fasciatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Lepomis spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Macrobrachium ohione 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 22Micropogonias undulatus 0.0 0.0 0.0 0.0 0.0 0.0 22,385.4 0.0 0.0 0.0 Phyllopodous branchiopoda 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Sciaenidae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Squilla empusa 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Syngnathus scovelli 0.0 0.0 0.0 0.0 0.0 0.0 0.0 22,385.4 0.0 0.0 Taphromysis louisinae 44,770.8 0.0 22,385.4 22,385.4 44,770.8 22,385.4 693,947.7 0.0 873,031.0 22,385.4 11,886Trinectes maculatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Unidentified fish remains 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Unidentified shrimp remains 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 TOTAL 179,083.3 22,385.4 78,348.9 78,348.9 134,312.5 761,104.0 805,874.8 179,083.3 1,074,499.7 22,385.4 12,647
Table B-12: Estimated total weekly entrainment (juvenile) based on actual flow data during the MORNING sample block. Dat

were derived by averaging from adjacent weeks. 

N:\CLIENT\CLECO\Teche\IM&E Characterization\Characterization Report\Appendix\Appendix B-Final 1 IME Report.doc 

SAMPLE WEEK Æ 06-04-06 06-11-06 06-18-06 06-25-06 07-02-06 07-09-06 07-16-06 07-23-07 07-30-06 08-

Anchoa mitchilli 273,096.3 370,536.9 17,053.4 0.0 272,949.4 298,578.7 272,695.0 157,852.4 64,600.9 148,

Anguilla rostrata 0.0 0.0 0.0 0.0 0.0 0.0 0.0 7,892.6 16,150.2 7,

Aplodinotus grunniens 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ariopsis felis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Brevoortia patronus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Callinectes sapidus 13,654.8 0.0 0.0 17,061.3 0.0 0.0 0.0 0.0 0.0 Citharichthys spilopterus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ctenogobius shufeldti 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Cynoscion arenarius 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Dorosoma petenense 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Farfantepenaeus aztecus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Fundulus spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Gobiidae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Gobioides broussonetii 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Gobiosoma bosc 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Gobiosoma robustum 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Gobiosoma spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Heterandria formosa 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ictaluridae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ictalurus furcatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ictalurus punctatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Larimus fasciatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Lepomis spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Macrobrachium ohione 0.0 0.0 0.0 0.0 0.0 0.0 0.0 7,892.6 16,150.2 23,Micropogonias undulatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Phyllopodous branchiopoda 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Sciaenidae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Squilla empusa 136,548.1 133,393.3 324,013.8 0.0 204,712.0 307,909.3 357,912.2 165,745.1 0.0 

Syngnathus scovelli 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Taphromysis louisinae 54,619.3 29,643.0 0.0 17,061.3 0.0 74,644.7 136,347.5 71,033.6 16,150.2 7,

Trinectes maculatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Unidentified fish remains 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Unidentified shrimp remains 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

TOTAL 477,918.5 533,573.2 341,067.1 34,122.6 477,661.4 681,132.8 766,954.7 410,416.3 113,051.6 187,
Table B-12: Estimated total weekly entrainment (juvenile) based on actual flow data during the MORNING sample block. Dat

were derived by averaging from adjacent weeks. 

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SAMPLE WEEK Æ 09-03-06 09-10-06 09-17-06 09-24-06 10-01-06 10-08-06 10-15-06 10-22-06 10-29-06 1

Anchoa mitchilli 20,204.3 688,128.8 74,989.5 47,312.7 27,391.2 73,854.9 126,912.7 79,891.1 324,009.7 8

Anguilla rostrata 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Aplodinotus grunniens 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ariopsis felis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Brevoortia patronus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Callinectes sapidus 0.0 0.0 74,989.5 0.0 36,521.7 0.0 56,405.7 0.0 0.0 Citharichthys spilopterus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ctenogobius shufeldti 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Cynoscion arenarius 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Dorosoma petenense 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Farfantepenaeus aztecus 0.0 0.0 0.0 0.0 9,130.4 0.0 21,152.1 0.0 0.0 Fundulus spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Gobiidae 0.0 84,507.0 0.0 0.0 36,521.7 9,231.9 21,152.1 0.0 0.0 Gobioides broussonetii 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Gobiosoma bosc 0.0 0.0 0.0 0.0 0.0 0.0 7,050.7 0.0 0.0 Gobiosoma robustum 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Gobiosoma spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Heterandria formosa 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ictaluridae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ictalurus furcatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ictalurus punctatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Larimus fasciatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Lepomis spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Macrobrachium ohione 0.0 0.0 0.0 9,462.5 0.0 18,463.7 0.0 1,268.1 0.0 Micropogonias undulatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Phyllopodous branchiopoda 0.0 0.0 0.0 0.0 0.0 0.0 28,202.8 0.0 0.0 Sciaenidae 0.0 0.0 0.0 0.0 0.0 0.0 105,760.6 0.0 0.0 Squilla empusa 0.0 48,289.7 0.0 9,462.5 0.0 0.0 0.0 0.0 0.0 

Syngnathus scovelli 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Taphromysis louisinae 30,306.4 181,086.5 0.0 75,700.4 155,217.0 129,246.1 7,241,077.1 1,268.1 329,152.8 3

Trinectes maculatus 0.0 12,072.4 0.0 0.0 0.0 0.0 7,050.7 0.0 0.0 Unidentified fish remains 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Unidentified shrimp remains 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

TOTAL 50,510.6 1,014,084.6 149,979.1 141,938.2 264,782.0 230,796.6 7,614,764.7 82,427.3 653,162.5 12
Table B-12: Estimated total weekly entrainment (juvenile) based on actual flow data during the MORNING sample block. Dat

were derived by averaging from adjacent weeks. 

N:\CLIENT\CLECO\Teche\IM&E Characterization\Characterization Report\Appendix\Appendix B-Final 1 IME Report.doc 

SAMPLE WEEK 

Æ 12-03-06 12-10-06 12-17-06 12-24-06 12-31-06 01-07-07 01-14-07 01-24-07 01-28-07 0

Anchoa mitchilli 274,318.2 143,282.9 8,683.8 4,316.5 4,265.8 4,265.8 0.0 0.0 0.0 3

Anguilla rostrata 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Aplodinotus grunniens 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ariopsis felis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Brevoortia patronus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Callinectes sapidus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Citharichthys spilopterus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ctenogobius shufeldti 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Cynoscion arenarius 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Dorosoma petenense 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Farfantepenaeus aztecus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Fundulus spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Gobiidae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Gobioides broussonetii 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Gobiosoma bosc 0.0 13,025.7 26,051.4 12,949.6 12,797.5 12,797.5 0.0 0.0 0.0 Gobiosoma robustum 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Gobiosoma spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Heterandria formosa 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ictaluridae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 4,270.8 8,572.4 Ictalurus furcatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ictalurus punctatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Larimus fasciatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Lepomis spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Macrobrachium ohione 8,572.4 8,683.8 8,683.8 8,633.1 8,531.6 8,531.6 8,541.6 4,270.8 0.0 Micropogonias undulatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Phyllopodous branchiopoda 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Sciaenidae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Squilla empusa 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Syngnathus scovelli 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Taphromysis louisinae 188,593.8 99,863.8 8,683.8 4,316.5 4,265.8 4,265.8 0.0 8,541.6 17,144.9 6

Trinectes maculatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Unidentified fish remains 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Unidentified shrimp remains 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

TOTAL 471,484.4 264,856.2 52,102.9 30,215.8 29,860.7 29,860.7 8,541.6 17,083.1 25,717.3 9
Table B-12: Estimated total weekly entrainment (juvenile) based on actual flow data during the MORNING sample block. Dat

were derived by averaging from adjacent weeks. 

N:\CLIENT\CLECO\Teche\IM&E Characterization\Characterization Report\Appendix\Appendix B-Final 1 IME Report.doc 

SAMPLE WEEK 

Æ 03-04-07 03-11-07 03-18-07 03-25-07 04-01-07 04-08-07 04-15-07 04-22-07 04-29-07 05-06-07 

Anchoa mitchilli 51,530.1 8,785.3 5,681.1 9,957.9 25,893.4 25,893.4 0.0 0.0 36,464.9 0.0 2Anguilla rostrata 0.0 0.0 1,420.3 2,489.5 8,631.1 0.0 17,367.6 0.0 0.0 0.0 Aplodinotus grunniens 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ariopsis felis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Brevoortia patronus 0.0 0.0 0.0 0.0 0.0 258,933.5 17,367.6 63,341.6 72,929.7 0.0 2Callinectes sapidus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Citharichthys spilopterus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ctenogobius shufeldti 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Cynoscion arenarius 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Dorosoma petenense 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Farfantepenaeus aztecus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Fundulus spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Gobiidae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Gobioides broussonetii 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Gobiosoma bosc 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Gobiosoma robustum 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Gobiosoma spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Heterandria formosa 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ictaluridae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ictalurus furcatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ictalurus punctatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Larimus fasciatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Lepomis spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Macrobrachium ohione 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Micropogonias undulatus 0.0 0.0 0.0 0.0 0.0 0.0 8,683.8 0.0 0.0 0.0 Phyllopodous branchiopoda 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Sciaenidae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Squilla empusa 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Syngnathus scovelli 0.0 0.0 0.0 0.0 0.0 0.0 0.0 9,048.8 0.0 0.0 Taphromysis louisinae 17,176.7 0.0 2,840.6 4,979.0 17,262.2 8,631.1 269,198.1 0.0 474,043.3 16,255.7 8,0Trinectes maculatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Unidentified fish remains 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Unidentified shrimp remains 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 TOTAL 68,706.7 8,785.3 9,942.0 17,426.3 51,786.7 293,458.0 312,617.2 72,390.4 583,437.9 16,255.7 8,6
Table B-13: Total weekly entrainment (juvenile) densities (number per 100 m3) as sampled during the DAY sampling block. Da

were derived by averaging from adjacent weeks. 

N:\CLIENT\CLECO\Teche\IM&E Characterization\Characterization Report\Appendix\Appendix B-Final 1 IME Report.doc 

SAMPLE WEEK Æ 06-04-06 06-11-06 06-18-06 06-25-06 07-02-06 07-09-06 07-16-06 07-23-07 07-30-06 08-06-06 

Anchoa mitchilli 26.0 121.0 0.0 1.0 8.0 7.5 7.0 3.5 0.0 6.5 

Anguilla rostrata 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Aplodinotus grunniens 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Ariopsis felis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Brevoortia patronus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Callinectes sapidus 0.0 1.0 0.0 2.0 0.0 0.0 0.0 0.0 0.0 0.0 

Citharichthys spilopterus 0.0 0.0 0.0 1.0 0.0 0.0 0.0 0.0 0.0 0.0 

Ctenogobius shufeldti 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Cynoscion arenarius 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Dorosoma petenense 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Farfantepenaeus aztecus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Fundulus spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Gobiidae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Gobioides broussonetii 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Gobiosoma bosc 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Gobiosoma robustum 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Gobiosoma spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Heterandria formosa 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Ictaluridae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Ictalurus furcatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Ictalurus punctatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Larimus fasciatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Lepomis spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Macrobrachium ohione 0.0 0.0 0.0 1.0 0.0 0.0 0.0 0.0 0.0 0.5 

Micropogonias undulatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Phyllopodous branchiopoda 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Sciaenidae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Squilla empusa 11.0 5.0 9.0 17.0 25.0 23.5 22.0 11.0 0.0 0.0 

Syngnathus scovelli 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Taphromysis louisinae 48.0 1.0 0.0 3.0 0.0 2.5 5.0 2.5 0.0 0.0 

Trinectes maculatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Unidentified fish remains 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Unidentified shrimp remains 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

TOTAL 85.0 128.0 9.0 25.0 33.0 33.5 34.0 17.0 0.0 7.0 
Table B-13: Total weekly entrainment (juvenile) densities (number per 100 m3) as sampled during the DAY sampling block. Da

were derived by averaging from adjacent weeks. 

N:\CLIENT\CLECO\Teche\IM&E Characterization\Characterization Report\Appendix\Appendix B-Final 1 IME Report.doc 

SAMPLE WEEK Æ 09-03-06 09-10-06 09-17-06 09-24-06 10-01-06 10-08-06 10-15-06 10-22-06 10-29-06 11-05-06 11

Anchoa mitchilli 0.0 126.0 2.0 7.0 0.0 4.0 3.0 87.0 95.0 11.0 

Anguilla rostrata 0.0 1.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Aplodinotus grunniens 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ariopsis felis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Brevoortia patronus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Callinectes sapidus 0.0 0.0 8.0 0.0 0.0 1.0 0.0 0.0 1.0 0.0 Citharichthys spilopterus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ctenogobius shufeldti 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Cynoscion arenarius 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Dorosoma petenense 0.0 1.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Farfantepenaeus aztecus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Fundulus spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Gobiidae 0.0 4.0 0.0 0.0 0.0 3.0 6.0 0.0 0.0 0.0 Gobioides broussonetii 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Gobiosoma bosc 0.0 0.0 0.0 0.0 0.0 1.0 0.0 0.0 0.0 1.0 Gobiosoma robustum 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Gobiosoma spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Heterandria formosa 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ictaluridae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ictalurus furcatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ictalurus punctatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Larimus fasciatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Lepomis spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Macrobrachium ohione 0.0 4.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 3.0 Micropogonias undulatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Phyllopodous branchiopoda 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Sciaenidae 0.0 0.0 0.0 0.0 0.0 0.0 2.0 0.0 0.0 0.0 Squilla empusa 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Syngnathus scovelli 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Taphromysis louisinae 1.0 35.0 5.0 22.0 1.0 37.0 250.0 51.0 102.0 18.0 

Trinectes maculatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Unidentified fish remains 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Unidentified shrimp remains 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 TOTAL 1.0 171.0 15.0 29.0 1.0 46.0 261.0 138.0 198.0 33.0 
Table B-13: Total weekly entrainment (juvenile) densities (number per 100 m3) as sampled during the DAY sampling block. Da

were derived by averaging from adjacent weeks. 

N:\CLIENT\CLECO\Teche\IM&E Characterization\Characterization Report\Appendix\Appendix B-Final 1 IME Report.doc 

SAMPLE WEEK Æ 12-03-06 12-10-06 12-17-06 12-24-06 12-31-06 01-07-07 01-14-07 01-24-07 01-28-07 02-04-07 02-

Anchoa mitchilli 57.0 29.0 1.0 0.5 0.5 0.5 0.0 0.5 1.0 2.0 

Anguilla rostrata 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Aplodinotus grunniens 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Ariopsis felis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Brevoortia patronus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Callinectes sapidus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Citharichthys spilopterus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Ctenogobius shufeldti 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Cynoscion arenarius 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Dorosoma petenense 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Farfantepenaeus aztecus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Fundulus spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Gobiidae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Gobioides broussonetii 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Gobiosoma bosc 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Gobiosoma robustum 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Gobiosoma spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Heterandria formosa 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Ictaluridae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Ictalurus furcatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Ictalurus punctatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Larimus fasciatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Lepomis spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Macrobrachium ohione 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Micropogonias undulatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Phyllopodous branchiopoda 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Sciaenidae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Squilla empusa 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Syngnathus scovelli 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Taphromysis louisinae 171.0 86.5 2.0 3.0 3.0 3.0 4.0 7.0 10.0 2.0 

Trinectes maculatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Unidentified fish remains 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Unidentified shrimp remains 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

TOTAL 228.0 115.5 3.0 3.5 3.5 3.5 4.0 7.5 11.0 4.0 
Table B-13: Total weekly entrainment (juvenile) densities (number per 100 m3) as sampled during the DAY sampling block. Da

were derived by averaging from adjacent weeks. 

N:\CLIENT\CLECO\Teche\IM&E Characterization\Characterization Report\Appendix\Appendix B-Final 1 IME Report.doc 

SAMPLE WEEK Æ 03-04-07 03-11-07 03-18-07 03-25-07 04-01-07 04-08-07 04-15-07 04-22-07 04-29-07 05-06-07 05-13

Anchoa mitchilli 5.0 3.0 4.0 4.0 5.0 7.0 4.0 1.0 1.0 4.0 Anguilla rostrata 0.0 0.0 0.0 0.0 0.0 0.0 0.0 3.0 1.0 0.0 Aplodinotus grunniens 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ariopsis felis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Brevoortia patronus 0.0 0.0 2.5 2.5 5.0 88.0 4.0 31.0 14.0 0.0 1Callinectes sapidus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Citharichthys spilopterus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ctenogobius shufeldti 1.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Cynoscion arenarius 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Dorosoma petenense 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Farfantepenaeus aztecus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Fundulus spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Gobiidae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Gobioides broussonetii 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Gobiosoma bosc 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Gobiosoma robustum 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Gobiosoma spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Heterandria formosa 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ictaluridae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ictalurus furcatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ictalurus punctatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Larimus fasciatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Lepomis spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Macrobrachium ohione 0.0 6.0 3.0 3.0 0.0 1.0 1.0 0.0 0.0 0.0 Micropogonias undulatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Phyllopodous branchiopoda 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Sciaenidae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Squilla empusa 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Syngnathus scovelli 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Taphromysis louisinae 10.0 4.0 2.0 2.0 0.0 0.0 7.0 0.0 0.0 1.0 3Trinectes maculatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Unidentified fish remains 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 1.0 Unidentified shrimp remains 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 TOTAL 16.0 13.0 11.5 11.5 10.0 96.0 16.0 35.0 16.0 6.0 5
Table B-14: Estimated total weekly entrainment (juvenile) based on design flow data during the DAY sample block (Estimates 

flow). Data in SHADED columns were derived by averaging from adjacent weeks. 

N:\CLIENT\CLECO\Teche\IM&E Characterization\Characterization Report\Appendix\Appendix B-Final 1 IME Report.doc 

SAMPLE WEEK Æ 06-04-06 06-11-06 06-18-06 06-25-06 07-02-06 07-09-06 07-16-06 07-23-07 07-30-06 08-06-06 

Anchoa mitchilli 582,020.7 2,708,634.8 0.0 22,385.4 179,083.3 167,890.6 156,697.9 78,348.9 0.0 145,505.2 

Anguilla rostrata 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Aplodinotus grunniens 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ariopsis felis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Brevoortia patronus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Callinectes sapidus 0.0 22,385.4 0.0 44,770.8 0.0 0.0 0.0 0.0 0.0 0.0 Citharichthys spilopterus 0.0 0.0 0.0 22,385.4 0.0 0.0 0.0 0.0 0.0 0.0 Ctenogobius shufeldti 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Cynoscion arenarius 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Dorosoma petenense 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Farfantepenaeus aztecus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Fundulus spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Gobiidae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Gobioides broussonetii 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Gobiosoma bosc 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Gobiosoma robustum 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Gobiosoma spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Heterandria formosa 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ictaluridae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ictalurus furcatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ictalurus punctatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Larimus fasciatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Lepomis spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Macrobrachium ohione 0.0 0.0 0.0 22,385.4 0.0 0.0 0.0 0.0 0.0 11,192.7 Micropogonias undulatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Phyllopodous branchiopoda 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Sciaenidae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Squilla empusa 246,239.5 111,927.1 201,468.7 380,552.0 559,635.3 526,057.2 492,479.0 246,239.5 0.0 0.0 Syngnathus scovelli 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Taphromysis louisinae 1,074,499.7 22,385.4 0.0 67,156.2 0.0 55,963.5 111,927.1 55,963.5 0.0 0.0 Trinectes maculatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Unidentified fish remains 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Unidentified shrimp remains 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 TOTAL 1,902,760.0 2,865,332.6 201,468.7 559,635.3 738,718.6 749,911.3 761,104.0 380,552.0 0.0 156,697.9 
Table B-14: Estimated total weekly entrainment (juvenile) based on design flow data during the DAY sample block (Estimates 

flow). Data in SHADED columns were derived by averaging from adjacent weeks. 

N:\CLIENT\CLECO\Teche\IM&E Characterization\Characterization Report\Appendix\Appendix B-Final 1 IME Report.doc 

SAMPLE WEEK Æ 09-03-06 09-10-06 09-17-06 09-24-06 10-01-06 10-08-06 10-15-06 10-22-06 10-29-06 11-05-06 

Anchoa mitchilli 0.0 2,820,561.8 44,770.8 156,697.9 0.0 89,541.6 67,156.2 1,947,530.8 2,126,614.1 246,239.5 

Anguilla rostrata 0.0 22,385.4 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Aplodinotus grunniens 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ariopsis felis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Brevoortia patronus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Callinectes sapidus 0.0 0.0 179,083.3 0.0 0.0 22,385.4 0.0 0.0 22,385.4 0.0 Citharichthys spilopterus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ctenogobius shufeldti 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Cynoscion arenarius 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Dorosoma petenense 0.0 22,385.4 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Farfantepenaeus aztecus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Fundulus spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Gobiidae 0.0 89,541.6 0.0 0.0 0.0 67,156.2 134,312.5 0.0 0.0 0.0 Gobioides broussonetii 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Gobiosoma bosc 0.0 0.0 0.0 0.0 0.0 22,385.4 0.0 0.0 0.0 22,385.4 Gobiosoma robustum 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Gobiosoma spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Heterandria formosa 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ictaluridae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ictalurus furcatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ictalurus punctatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Larimus fasciatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Lepomis spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Macrobrachium ohione 0.0 89,541.6 0.0 0.0 0.0 0.0 0.0 0.0 0.0 67,156.2 Micropogonias undulatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Phyllopodous branchiopoda 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Sciaenidae 0.0 0.0 0.0 0.0 0.0 0.0 44,770.8 0.0 0.0 0.0 Squilla empusa 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Syngnathus scovelli 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Taphromysis louisinae 22,385.4 783,489.4 111,927.1 492,479.0 22,385.4 828,260.2 5,596,352.8 1,141,656.0 2,283,311.9 402,937.4 Trinectes maculatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Unidentified fish remains 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Unidentified shrimp remains 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 TOTAL 22,385.4 3,827,905.3 335,781.2 649,176.9 22,385.4 1,029,728.9 5,842,592.3 3,089,186.7 4,432,311.4 738,718.6 1
Table B-14: Estimated weekly entrainment (juvenile) densities based on actual flow data during the DAY sample block (Estima

design flow). Data in SHADED columns were derived by linear interpolation from adjacent weeks. N:\CLIENT\CLECO\Teche\IM&E Characterization\Characterization Report\Appendix\Appendix B-Final 1 IME Report.doc 

SAMPLE WEEK Æ 12-03-06 12-10-06 12-17-06 12-24-06 12-31-06 01-07-07 01-14-07 01-24-07 01-28-07 02-04-07 

Anchoa mitchilli 1,275,968.4 649,176.9 22,385.4 11,192.7 11,192.7 11,192.7 0.0 11,192.7 22,385.4 44,770.8 

Anguilla rostrata 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Aplodinotus grunniens 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ariopsis felis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Brevoortia patronus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Callinectes sapidus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Citharichthys spilopterus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ctenogobius shufeldti 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Cynoscion arenarius 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Dorosoma petenense 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Farfantepenaeus aztecus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Fundulus spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Gobiidae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Gobioides broussonetii 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Gobiosoma bosc 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Gobiosoma robustum 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Gobiosoma spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Heterandria formosa 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ictaluridae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ictalurus furcatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ictalurus punctatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Larimus fasciatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Lepomis spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Macrobrachium ohione 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Micropogonias undulatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Phyllopodous branchiopoda 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Sciaenidae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Squilla empusa 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Syngnathus scovelli 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Taphromysis louisinae 3,827,905.3 1,936,338.1 44,770.8 67,156.2 67,156.2 67,156.2 89,541.6 156,697.9 223,854.1 44,770.8 Trinectes maculatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Unidentified fish remains 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Unidentified shrimp remains 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 TOTAL 5,103,873.8 2,585,515.0 67,156.2 78,348.9 78,348.9 78,348.9 89,541.6 167,890.6 246,239.5 89,541.6 
Table B-14: Estimated weekly entrainment (juvenile) densities based on actual flow data during the DAY sample block (Estima

design flow). Data in SHADED columns were derived by linear interpolation from adjacent weeks. N:\CLIENT\CLECO\Teche\IM&E Characterization\Characterization Report\Appendix\Appendix B-Final 1 IME Report.doc 

SAMPLE WEEK Æ 03-04-07 03-11-07 03-18-07 03-25-07 04-01-07 04-08-07 04-15-07 04-22-07 04-29-07 05-06-0

Anchoa mitchilli 111,927.1 67,156.2 89,541.6 89,541.6 111,927.1 156,697.9 89,541.6 22,385.4 22,385.4 89,541.Anguilla rostrata 0.0 0.0 0.0 0.0 0.0 0.0 0.0 67,156.2 22,385.4 0.

Aplodinotus grunniens 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.

Ariopsis felis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.Brevoortia patronus 0.0 0.0 55,963.5 55,963.5 111,927.1 1,969,916.2 89,541.6 693,947.7 313,395.8 0.

Callinectes sapidus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.

Citharichthys spilopterus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.Ctenogobius shufeldti 22,385.4 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.Cynoscion arenarius 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.Dorosoma petenense 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.Farfantepenaeus aztecus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.Fundulus spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.Gobiidae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.Gobioides broussonetii 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.Gobiosoma bosc 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.Gobiosoma robustum 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.Gobiosoma spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.Heterandria formosa 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.Ictaluridae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.Ictalurus furcatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.Ictalurus punctatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.Larimus fasciatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.Lepomis spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.Macrobrachium ohione 0.0 134,312.5 67,156.2 67,156.2 0.0 22,385.4 22,385.4 0.0 0.0 0.

Micropogonias undulatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.

Phyllopodous branchiopoda 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.Sciaenidae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.Squilla empusa 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.Syngnathus scovelli 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.Taphromysis louisinae 223,854.1 89,541.6 44,770.8 44,770.8 0.0 0.0 156,697.9 0.0 0.0 22,385.

Trinectes maculatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.

Unidentified fish remains 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 22,385.Unidentified shrimp remains 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.TOTAL 358,166.6 291,010.3 257,432.2 257,432.2 223,854.1 2,148,999.5 358,166.6 783,489.4 358,166.6 134,312.
Table B-15: Estimated total weekly entrainment (juvenile) based on actual flow data during the DAY sample block. Data in SH

derived by averaging from adjacent weeks. 

N:\CLIENT\CLECO\Teche\IM&E Characterization\Characterization Report\Appendix\Appendix B-Final 1 IME Report.doc 

SAMPLE WEEK Æ 06-04-06 06-11-06 06-18-06 06-25-06 07-02-06 07-09-06 07-16-06 07-23-07 

07-30-

06 08-0

Anchoa mitchilli 355,025.1 1,793,398.7 0.0 17,061.3 136,474.7 139,958.8 119,304.1 55,248.4 0.0 101,3

Anguilla rostrata 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Aplodinotus grunniens 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ariopsis felis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Brevoortia patronus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Callinectes sapidus 0.0 14,821.5 0.0 34,122.6 0.0 0.0 0.0 0.0 0.0 Citharichthys spilopterus 0.0 0.0 0.0 17,061.3 0.0 0.0 0.0 0.0 0.0 Ctenogobius shufeldti 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Cynoscion arenarius 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Dorosoma petenense 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Farfantepenaeus aztecus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Fundulus spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Gobiidae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Gobioides broussonetii 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Gobiosoma bosc 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Gobiosoma robustum 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Gobiosoma spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Heterandria formosa 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ictaluridae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ictalurus furcatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ictalurus punctatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Larimus fasciatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Lepomis spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Macrobrachium ohione 0.0 0.0 0.0 17,061.3 0.0 0.0 0.0 0.0 0.0 7,7Micropogonias undulatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Phyllopodous branchiopoda 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Sciaenidae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Squilla empusa 150,202.9 74,107.4 153,480.2 290,042.2 426,483.4 438,537.5 374,955.6 173,637.7 0.0 

Syngnathus scovelli 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Taphromysis louisinae 655,431.0 14,821.5 0.0 51,183.9 0.0 46,652.9 85,217.2 39,463.1 0.0 Trinectes maculatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Unidentified fish remains 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Unidentified shrimp remains 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

TOTAL 1,160,659.1 1,897,149.1 153,480.2 426,532.6 562,958.1 625,149.3 579,476.9 268,349.1 0.0 109,1
Table B-15: Estimated total weekly entrainment (juvenile) based on actual flow data during the DAY sample block. Data in SH

derived by averaging from adjacent weeks. 

N:\CLIENT\CLECO\Teche\IM&E Characterization\Characterization Report\Appendix\Appendix B-Final 1 IME Report.doc 

SAMPLE WEEK Æ 09-03-06 09-10-06 09-17-06 09-24-06 10-01-06 10-08-06 10-15-06 10-22-06 10-29-06 11-05-06 

Anchoa mitchilli 0.0 1,521,126.8 21,425.6 66,237.8 0.0 36,927.4 21,152.1 110,325.8 488,586.1 98,420.9 

Anguilla rostrata 0.0 12,072.4 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Aplodinotus grunniens 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ariopsis felis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Brevoortia patronus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Callinectes sapidus 0.0 0.0 85,702.3 0.0 0.0 9,231.9 0.0 0.0 5,143.0 0.0 Citharichthys spilopterus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ctenogobius shufeldti 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Cynoscion arenarius 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Dorosoma petenense 0.0 12,072.4 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Farfantepenaeus aztecus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Fundulus spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Gobiidae 0.0 48,289.7 0.0 0.0 0.0 27,695.6 42,304.2 0.0 0.0 0.0 Gobioides broussonetii 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Gobiosoma bosc 0.0 0.0 0.0 0.0 0.0 9,231.9 0.0 0.0 0.0 8,947.4 Gobiosoma robustum 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Gobiosoma spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Heterandria formosa 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ictaluridae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ictalurus furcatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ictalurus punctatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Larimus fasciatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Lepomis spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Macrobrachium ohione 0.0 48,289.7 0.0 0.0 0.0 0.0 0.0 0.0 0.0 26,842.1 Micropogonias undulatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Phyllopodous branchiopoda 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Sciaenidae 0.0 0.0 0.0 0.0 0.0 0.0 14,101.4 0.0 0.0 0.0 Squilla empusa 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Syngnathus scovelli 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Taphromysis louisinae 10,102.1 422,535.2 53,564.0 208,176.0 9,130.4 341,578.9 1,762,677.0 64,673.8 524,587.2 161,052.3 

Trinectes maculatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Unidentified fish remains 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Unidentified shrimp remains 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

TOTAL 10,102.1 2,064,386.4 160,691.9 274,413.8 9,130.4 424,665.7 1,840,234.8 174,999.6 1,018,316.4 295,262.6 
Table B-15: Estimated total weekly entrainment (juvenile) based on actual flow data during the DAY sample block. Data in SH

derived by averaging from adjacent weeks. 

N:\CLIENT\CLECO\Teche\IM&E Characterization\Characterization Report\Appendix\Appendix B-Final 1 IME Report.doc 

SAMPLE WEEK Æ 12-03-06 12-10-06 12-17-06 

12-24-

06 12-31-06 01-07-07 01-14-07 01-24-07 01-28-07 02-04-07 

Anchoa mitchilli 488,629.3 251,830.5 8,683.8 4,316.5 4,265.8 4,265.8 0.0 4,270.8 8,572.4 17,164.7 

Anguilla rostrata 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Aplodinotus grunniens 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ariopsis felis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Brevoortia patronus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Callinectes sapidus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Citharichthys spilopterus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ctenogobius shufeldti 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Cynoscion arenarius 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Dorosoma petenense 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Farfantepenaeus aztecus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Fundulus spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Gobiidae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Gobioides broussonetii 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Gobiosoma bosc 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Gobiosoma robustum 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Gobiosoma spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Heterandria formosa 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ictaluridae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ictalurus furcatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ictalurus punctatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Larimus fasciatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Lepomis spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Macrobrachium ohione 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Micropogonias undulatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Phyllopodous branchiopoda 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Sciaenidae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Squilla empusa 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Syngnathus scovelli 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Taphromysis louisinae 1,465,887.8 751,149.6 17,367.6 25,899.3 25,594.9 25,594.9 34,166.2 59,790.9 85,724.4 17,164.7 

Trinectes maculatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Unidentified fish remains 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Unidentified shrimp remains 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 TOTAL 1,954,517.1 1,002,980.1 26,051.4 30,215.8 29,860.7 29,860.7 34,166.2 64,061.7 94,296.9 34,329.4 
Table B-15: Estimated total weekly entrainment (juvenile) based on actual flow data during the DAY sample block. Data in SH

derived by averaging from adjacent weeks. 

N:\CLIENT\CLECO\Teche\IM&E Characterization\Characterization Report\Appendix\Appendix B-Final 1 IME Report.doc 

SAMPLE WEEK Æ 03-04-07 03-11-07 03-18-07 03-25-07 04-01-07 04-08-07 04-15-07 04-22-07 04-29-07 05-06-07 

Anchoa mitchilli 42,941.7 26,355.8 11,362.3 19,915.8 43,155.6 60,417.8 34,735.2 9,048.8 12,155.0 65,022.8 Anguilla rostrata 0.0 0.0 0.0 0.0 0.0 0.0 0.0 27,146.4 12,155.0 0.0 

Aplodinotus grunniens 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Ariopsis felis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Brevoortia patronus 0.0 0.0 7,101.4 12,447.4 43,155.6 759,538.3 34,735.2 280,512.8 170,169.4 0.0 

Callinectes sapidus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Citharichthys spilopterus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ctenogobius shufeldti 8,588.3 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Cynoscion arenarius 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Dorosoma petenense 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Farfantepenaeus aztecus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Fundulus spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Gobiidae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Gobioides broussonetii 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Gobiosoma bosc 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Gobiosoma robustum 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Gobiosoma spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Heterandria formosa 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ictaluridae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ictalurus furcatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ictalurus punctatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Larimus fasciatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Lepomis spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Macrobrachium ohione 0.0 52,711.6 8,521.7 14,936.9 0.0 8,631.1 8,683.8 0.0 0.0 0.0 

Micropogonias undulatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Phyllopodous branchiopoda 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Sciaenidae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Squilla empusa 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Syngnathus scovelli 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Taphromysis louisinae 85,883.4 35,141.0 5,681.1 9,957.9 0.0 0.0 60,786.7 0.0 0.0 16,255.7 

Trinectes maculatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Unidentified fish remains 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 16,255.7 Unidentified shrimp remains 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 TOTAL 137,413.5 114,208.4 32,666.6 57,257.9 86,311.2 828,587.3 138,941.0 316,708.0 194,479.3 97,534.2 
Table B-16: Total weekly entrainment (juvenile) densities (number per 100 m3) as sampled during the NIGHT sample block. D

columns were derived by averaging from adjacent weeks. 

N:\CLIENT\CLECO\Teche\IM&E Characterization\Characterization Report\Appendix\Appendix B-Final 1 IME Report.doc 

SAMPLE WEEK Æ 06-04-06 06-11-06 06-18-06 06-25-06 07-02-06 07-09-06 07-16-06 07-23-07 07-30-06 08-06-06 08-13-06 

Anchoa mitchilli 0.0 37.0 275.0 180.0 70.0 265.0 460.0 237.0 14.0 91.5 169.0 

Anguilla rostrata 0.0 0.0 0.0 0.0 0.0 2.5 5.0 2.5 0.0 1.0 2.0 

Aplodinotus grunniens 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ariopsis felis 1.0 0.0 0.0 1.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Brevoortia patronus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Callinectes sapidus 0.0 0.0 1.0 0.0 0.0 0.0 0.0 0.0 0.0 1.5 3.0 

Citharichthys spilopterus 0.0 0.0 0.0 2.0 2.0 1.0 0.0 0.0 0.0 0.0 0.0 

Ctenogobius shufeldti 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Cynoscion arenarius 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Dorosoma petenense 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Farfantepenaeus aztecus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Fundulus spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Gobiidae 0.0 0.0 0.0 0.0 0.0 3.5 7.0 3.5 0.0 0.0 0.0 

Gobioides broussonetii 0.0 0.0 0.0 0.0 0.0 0.0 0.0 1.5 3.0 1.5 0.0 

Gobiosoma bosc 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Gobiosoma robustum 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Gobiosoma spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Heterandria formosa 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Ictaluridae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Ictalurus furcatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Ictalurus punctatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Larimus fasciatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Lepomis spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.5 1.0 

Macrobrachium ohione 2.0 0.0 6.0 36.0 2.0 32.5 63.0 44.5 26.0 42.0 58.0 

Micropogonias undulatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Phyllopodous branchiopoda 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Sciaenidae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Squilla empusa 42.0 30.0 24.0 22.0 41.0 56.0 71.0 35.5 0.0 0.0 0.0 

Syngnathus scovelli 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Taphromysis louisinae 120.0 8.0 8.0 18.0 24.0 16.5 9.0 8.0 7.0 8.0 9.0 

Trinectes maculatus 0.0 0.0 0.0 0.0 0.0 4.0 8.0 5.5 3.0 5.5 8.0 

Unidentified fish remains 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Unidentified shrimp remains 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

TOTAL 165.0 75.0 314.0 259.0 139.0 381.0 623.0 338.0 53.0 151.5 250.0 
Table B-16: Total weekly entrainment (juvenile) densities (number per 100 m3) as sampled during the NIGHT sample block. D

columns were derived by averaging from adjacent weeks. 

N:\CLIENT\CLECO\Teche\IM&E Characterization\Characterization Report\Appendix\Appendix B-Final 1 IME Report.doc 

SAMPLE WEEK Æ 09-03-06 09-10-06 09-17-06 09-24-06 10-01-06 10-08-06 10-15-06 10-22-06 10-29-06 11-05-06 11-12-0

Anchoa mitchilli 46.0 325.0 65.0 281.0 23.0 39.0 362.0 27.0 240.0 50.0 18.

Anguilla rostrata 0.0 2.0 0.0 0.0 1.0 0.0 1.0 0.0 0.0 0.0 0.Aplodinotus grunniens 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.Ariopsis felis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.Brevoortia patronus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.Callinectes sapidus 0.0 18.0 1.0 0.0 0.0 22.0 5.0 0.0 0.0 7.0 2.Citharichthys spilopterus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.Ctenogobius shufeldti 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.Cynoscion arenarius 1.0 0.0 1.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.Dorosoma petenense 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.Farfantepenaeus aztecus 0.0 0.0 1.0 0.0 0.0 0.0 0.0 0.0 1.0 0.0 0.0 Fundulus spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.Gobiidae 4.0 12.0 0.0 0.0 4.0 5.0 8.0 0.0 1.0 0.0 0.Gobioides broussonetii 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.Gobiosoma bosc 0.0 0.0 0.0 0.0 1.0 15.0 0.0 0.0 1.0 0.0 0.Gobiosoma robustum 0.0 0.0 0.0 4.0 0.0 0.0 0.0 0.0 0.0 0.0 0.Gobiosoma spp. 0.0 0.0 3.0 3.0 0.0 0.0 0.0 0.0 0.0 0.0 0.Heterandria formosa 1.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.Ictaluridae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.Ictalurus furcatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.Ictalurus punctatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.Larimus fasciatus 1.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.Lepomis spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Macrobrachium ohione 0.0 8.0 3.0 3.0 0.0 5.0 2.0 0.0 1.0 11.0 6.Micropogonias undulatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.Phyllopodous branchiopoda 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.Sciaenidae 0.0 0.0 0.0 0.0 0.0 0.0 4.0 0.0 0.0 0.0 0.Squilla empusa 0.0 2.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.Syngnathus scovelli 0.0 0.0 0.0 0.0 0.0 1.0 0.0 0.0 0.0 0.0 0.0 Taphromysis louisinae 28.0 112.0 1.0 165.0 190.0 174.0 392.0 67.0 99.0 12.0 103.

Trinectes maculatus 0.0 3.0 0.0 1.0 0.0 0.0 0.0 0.0 0.0 0.0 0.Unidentified fish remains 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.Unidentified shrimp remains 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.TOTAL 81.0 482.0 75.0 457.0 219.0 261.0 774.0 94.0 343.0 80.0 129.
Table B-16: Total weekly entrainment (juvenile) densities (number per 100 m3) as sampled during the NIGHT sample block. D

columns were derived by averaging from adjacent weeks. 

N:\CLIENT\CLECO\Teche\IM&E Characterization\Characterization Report\Appendix\Appendix B-Final 1 IME Report.doc 

SAMPLE WEEK Æ 12-03-06 12-10-06 12-17-06 12-24-06 12-31-06 01-07-07 01-14-07 01-24-07 01-28-07 02-04-07 02-1

Anchoa mitchilli 9.0 7.0 5.0 2.5 2.5 2.5 0.0 1.5 3.0 7.0 

Anguilla rostrata 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Aplodinotus grunniens 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Ariopsis felis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Brevoortia patronus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Callinectes sapidus 1.0 0.5 0.0 0.0 0.0 0.0 0.0 0.5 1.0 0.0 

Citharichthys spilopterus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Ctenogobius shufeldti 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Cynoscion arenarius 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Dorosoma petenense 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Farfantepenaeus aztecus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Fundulus spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Gobiidae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Gobioides broussonetii 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Gobiosoma bosc 1.0 0.5 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Gobiosoma robustum 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Gobiosoma spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Heterandria formosa 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Ictaluridae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Ictalurus furcatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Ictalurus punctatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Larimus fasciatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Lepomis spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Macrobrachium ohione 1.0 0.5 0.0 0.0 0.0 0.0 0.0 0.0 0.0 1.0 

Micropogonias undulatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Phyllopodous branchiopoda 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Sciaenidae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Squilla empusa 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Syngnathus scovelli 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Taphromysis louisinae 26.0 18.5 11.0 7.0 7.0 7.0 3.0 5.0 7.0 8.0 

Trinectes maculatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Unidentified fish remains 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Unidentified shrimp remains 0.0 0.0 0.0 0.0 0.0 0.0 0.0 1.0 2.0 0.0 

TOTAL 38.0 27.0 16.0 9.5 9.5 9.5 3.0 8.0 13.0 16.0 
Table B-16: Total weekly entrainment (juvenile) densities (number per 100 m3) as sampled during the NIGHT sample block. D

columns were derived by averaging from adjacent weeks. 

N:\CLIENT\CLECO\Teche\IM&E Characterization\Characterization Report\Appendix\Appendix B-Final 1 IME Report.doc 

SAMPLE WEEK Æ 03-04-07 03-11-07 03-18-07 03-25-07 04-01-07 04-08-07 04-15-07 04-22-07 04-29-07 05-06-07 05-13

Anchoa mitchilli 50.0 19.0 13.0 13.0 7.0 1.0 4.0 3.0 7.0 1.0 1Anguilla rostrata 0.0 0.0 0.0 0.0 0.0 0.0 0.0 1.0 0.0 0.0 Aplodinotus grunniens 0.0 0.0 0.0 0.0 0.0 1.0 0.0 0.0 0.0 0.0 Ariopsis felis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Brevoortia patronus 0.0 0.0 5.0 5.0 10.0 80.0 21.0 61.0 33.0 4.0 Callinectes sapidus 0.0 1.0 0.5 0.5 0.0 0.0 0.0 0.0 0.0 0.0 Citharichthys spilopterus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 1.0 0.0 0.0 Ctenogobius shufeldti 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Cynoscion arenarius 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Dorosoma petenense 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Farfantepenaeus aztecus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Fundulus spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Gobiidae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Gobioides broussonetii 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Gobiosoma bosc 0.0 0.0 0.5 0.5 1.0 0.0 0.0 0.0 0.0 0.0 Gobiosoma robustum 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Gobiosoma spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Heterandria formosa 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ictaluridae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ictalurus furcatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ictalurus punctatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Larimus fasciatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Lepomis spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Macrobrachium ohione 0.0 1.0 1.5 1.5 2.0 1.0 2.0 2.0 1.0 9.0 1Micropogonias undulatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Phyllopodous branchiopoda 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Sciaenidae 2.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Squilla empusa 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Syngnathus scovelli 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Taphromysis louisinae 8.0 3.0 3.5 3.5 4.0 2.0 23.0 18.0 96.0 37.0 1,19Trinectes maculatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Unidentified fish remains 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Unidentified shrimp remains 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 TOTAL 60.0 24.0 24.0 24.0 24.0 85.0 50.0 86.0 137.0 51.0 1,21
Table B-17: Estimated total weekly entrainment (juvenile) based on design flow data during the NIGHT sample block (Estimat

averaging from adjacent weeks. 

N:\CLIENT\CLECO\Teche\IM&E Characterization\Characterization Report\Appendix\Appendix B-Final 1 IME Report.doc 

SAMPLE WEEK Æ 06-04-06 06-11-06 06-18-06 06-25-06 07-02-06 07-09-06 07-16-06 

Anchoa mitchilli 0.0 828,260.2 6,155,988.1 4,029,374.0 1,566,978.8 5,932,134.0 10,297,289.2 

Anguilla rostrata 0.0 0.0 0.0 0.0 0.0 55,963.5 111,927.1 Aplodinotus grunniens 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ariopsis felis 22,385.4 0.0 0.0 22,385.4 0.0 0.0 0.0 Brevoortia patronus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Callinectes sapidus 0.0 0.0 22,385.4 0.0 0.0 0.0 0.0 Citharichthys spilopterus 0.0 0.0 0.0 44,770.8 44,770.8 22,385.4 0.0 Ctenogobius shufeldti 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Cynoscion arenarius 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Dorosoma petenense 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Farfantepenaeus aztecus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Fundulus spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Gobiidae 0.0 0.0 0.0 0.0 0.0 78,348.9 156,697.9 Gobioides broussonetii 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Gobiosoma bosc 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Gobiosoma robustum 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Gobiosoma spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Heterandria formosa 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ictaluridae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ictalurus furcatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Ictalurus punctatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Larimus fasciatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Lepomis spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Macrobrachium ohione 44,770.8 0.0 134,312.5 805,874.8 44,770.8 727,525.9 1,410,280.9 Micropogonias undulatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Phyllopodous branchiopoda 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Sciaenidae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Squilla empusa 940,187.3 671,562.3 537,249.9 492,479.0 917,801.9 1,253,583.0 1,589,364.2 

Syngnathus scovelli 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Taphromysis louisinae 2,686,249.3 179,083.3 179,083.3 402,937.4 537,249.9 369,359.3 201,468.7 

Trinectes maculatus 0.0 0.0 0.0 0.0 0.0 89,541.6 179,083.3 Unidentified fish remains 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Unidentified shrimp remains 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

TOTAL 3,693,592.9 1,678,905.8 7,029,019.1 5,797,821.5 3,111,572.2 8,528,841.7 13,946,111.2 
Table B-17: Estimated total weekly entrainment (juvenile) based on design flow data during the NIGHT sample block (Estimat

averaging from adjacent weeks. 

N:\CLIENT\CLECO\Teche\IM&E Characterization\Characterization Report\Appendix\Appendix B-Final 1 IME Report.doc 

SAMPLE WEEK Æ 09-03-06 09-10-06 09-17-06 09-24-06 10-01-06 10-08-06 10-15-06 10

Anchoa mitchilli 1,029,728.9 7,275,258.6 1,455,051.7 6,290,300.6 514,864.5 873,031.0 8,103,518.9 604

Anguilla rostrata 0.0 44,770.8 0.0 0.0 22,385.4 0.0 22,385.4 

Aplodinotus grunniens 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ariopsis felis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Brevoortia patronus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Callinectes sapidus 0.0 402,937.4 22,385.4 0.0 0.0 492,479.0 111,927.1 Citharichthys spilopterus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ctenogobius shufeldti 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Cynoscion arenarius 22,385.4 0.0 22,385.4 0.0 0.0 0.0 0.0 Dorosoma petenense 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Farfantepenaeus aztecus 0.0 0.0 22,385.4 0.0 0.0 0.0 0.0 Fundulus spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Gobiidae 89,541.6 268,624.9 0.0 0.0 89,541.6 111,927.1 179,083.3 Gobioides broussonetii 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Gobiosoma bosc 0.0 0.0 0.0 0.0 22,385.4 335,781.2 0.0 Gobiosoma robustum 0.0 0.0 0.0 89,541.6 0.0 0.0 0.0 Gobiosoma spp. 0.0 0.0 67,156.2 67,156.2 0.0 0.0 0.0 Heterandria formosa 22,385.4 0.0 0.0 0.0 0.0 0.0 0.0 Ictaluridae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ictalurus furcatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ictalurus punctatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Larimus fasciatus 22,385.4 0.0 0.0 0.0 0.0 0.0 0.0 Lepomis spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Macrobrachium ohione 0.0 179,083.3 67,156.2 67,156.2 0.0 111,927.1 44,770.8 Micropogonias undulatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Phyllopodous branchiopoda 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Sciaenidae 0.0 0.0 0.0 0.0 0.0 0.0 89,541.6 Squilla empusa 0.0 44,770.8 0.0 0.0 0.0 0.0 0.0 Syngnathus scovelli 0.0 0.0 0.0 0.0 0.0 22,385.4 0.0 Taphromysis louisinae 626,791.5 2,507,166.1 22,385.4 3,693,592.9 4,253,228.1 3,895,061.6 8,775,081.2 1,499

Trinectes maculatus 0.0 67,156.2 0.0 22,385.4 0.0 0.0 0.0 Unidentified fish remains 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Unidentified shrimp remains 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

TOTAL 1,813,218.3 10,789,768.2 1,678,905.8 10,230,132.9 4,902,405.1 5,842,592.3 17,326,308.3 2,104
Table B-17: Estimated total weekly entrainment (juvenile) based on design flow data during the NIGHT sample block (Estimat

averaging from adjacent weeks. 

N:\CLIENT\CLECO\Teche\IM&E Characterization\Characterization Report\Appendix\Appendix B-Final 1 IME Report.doc 

SAMPLE WEEK Æ 12-03-06 12-10-06 12-17-06 12-24-06 12-31-06 01-07-07 01-14-07 01-24

Anchoa mitchilli 201,468.7 156,697.9 111,927.1 55,963.5 55,963.5 55,963.5 0.0 33,57

Anguilla rostrata 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Aplodinotus grunniens 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ariopsis felis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Brevoortia patronus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Callinectes sapidus 22,385.4 11,192.7 0.0 0.0 0.0 0.0 0.0 11,19Citharichthys spilopterus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ctenogobius shufeldti 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Cynoscion arenarius 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Dorosoma petenense 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Farfantepenaeus aztecus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Fundulus spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Gobiidae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Gobioides broussonetii 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Gobiosoma bosc 22,385.4 11,192.7 0.0 0.0 0.0 0.0 0.0 Gobiosoma robustum 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Gobiosoma spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Heterandria formosa 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ictaluridae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ictalurus furcatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ictalurus punctatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Larimus fasciatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Lepomis spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Macrobrachium ohione 22,385.4 11,192.7 0.0 0.0 0.0 0.0 0.0 Micropogonias undulatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Phyllopodous branchiopoda 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Sciaenidae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Squilla empusa 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Syngnathus scovelli 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Taphromysis louisinae 582,020.7 414,130.1 246,239.5 156,697.9 156,697.9 156,697.9 67,156.2 111,92

Trinectes maculatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Unidentified fish remains 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Unidentified shrimp remains 0.0 0.0 0.0 0.0 0.0 0.0 0.0 22,38

TOTAL 850,645.6 604,406.1 358,166.6 212,661.4 212,661.4 212,661.4 67,156.2 179,08
Table B-17: Estimated total weekly entrainment (juvenile) based on design flow data during the NIGHT sample block (Estimat

averaging from adjacent weeks. 

N:\CLIENT\CLECO\Teche\IM&E Characterization\Characterization Report\Appendix\Appendix B-Final 1 IME Report.doc 

SAMPLE WEEK Æ 03-04-07 03-11-07 03-18-07 03-25-07 04-01-07 04-08-07 04-15-07 

Anchoa mitchilli 1,119,270.6 425,322.8 291,010.3 291,010.3 156,697.9 22,385.4 89,541.6 Anguilla rostrata 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Aplodinotus grunniens 0.0 0.0 0.0 0.0 0.0 22,385.4 0.0 Ariopsis felis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Brevoortia patronus 0.0 0.0 111,927.1 111,927.1 223,854.1 1,790,832.9 470,093.6 

Callinectes sapidus 0.0 22,385.4 11,192.7 11,192.7 0.0 0.0 0.0 

Citharichthys spilopterus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ctenogobius shufeldti 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Cynoscion arenarius 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Dorosoma petenense 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Farfantepenaeus aztecus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Fundulus spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Gobiidae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Gobioides broussonetii 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Gobiosoma bosc 0.0 0.0 11,192.7 11,192.7 22,385.4 0.0 0.0 Gobiosoma robustum 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Gobiosoma spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Heterandria formosa 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ictaluridae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ictalurus furcatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ictalurus punctatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Larimus fasciatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Lepomis spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Macrobrachium ohione 0.0 22,385.4 33,578.1 33,578.1 44,770.8 22,385.4 44,770.8 

Micropogonias undulatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Phyllopodous branchiopoda 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Sciaenidae 44,770.8 0.0 0.0 0.0 0.0 0.0 0.0 Squilla empusa 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Syngnathus scovelli 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Taphromysis louisinae 179,083.3 67,156.2 78,348.9 78,348.9 89,541.6 44,770.8 514,864.5 

Trinectes maculatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Unidentified fish remains 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Unidentified shrimp remains 0.0 0.0 0.0 0.0 0.0 0.0 0.0 TOTAL 1,343,124.7 537,249.9 537,249.9 537,249.9 537,249.9 1,902,760.0 1,119,270.6 
Table B-18: Estimated total weekly entrainment (juvenile) based on actual flow data during the NIGHT sample block. Data in 

N:\CLIENT\CLECO\Teche\IM&E Characterization\Characterization Report\Appendix\Appendix B-Final 1 IME Report.doc 

SAMPLE WEEK Æ 06-04-06 06-11-06 06-18-06 06-25-06 07-02-06 07-09-06 07-16-06 

Anchoa mitchilli 0.0 548,394.7 4,689,672.9 3,071,034.9 1,194,153.6 4,945,210.5 7,839,981.5 

Anguilla rostrata 0.0 0.0 0.0 0.0 0.0 46,652.9 85,217.2 Aplodinotus grunniens 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ariopsis felis 13,654.8 0.0 0.0 17,061.3 0.0 0.0 0.0 

Brevoortia patronus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Callinectes sapidus 0.0 0.0 17,053.4 0.0 0.0 0.0 0.0 Citharichthys spilopterus 0.0 0.0 0.0 34,122.6 34,118.7 18,661.2 0.0 Ctenogobius shufeldti 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Cynoscion arenarius 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Dorosoma petenense 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Farfantepenaeus aztecus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Fundulus spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Gobiidae 0.0 0.0 0.0 0.0 0.0 65,314.1 119,304.1 Gobioides broussonetii 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Gobiosoma bosc 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Gobiosoma robustum 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Gobiosoma spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Heterandria formosa 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ictaluridae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ictalurus furcatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Ictalurus punctatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Larimus fasciatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Lepomis spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Macrobrachium ohione 27,309.6 0.0 102,320.1 614,207.0 34,118.7 606,488.1 1,073,736.6 

Micropogonias undulatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Phyllopodous branchiopoda 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Sciaenidae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Squilla empusa 573,502.2 444,644.3 409,280.5 375,348.7 699,432.8 1,045,025.6 1,210,084.1 Syngnathus scovelli 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Taphromysis louisinae 1,638,577.6 118,571.8 136,426.8 307,103.5 409,424.1 307,909.3 153,390.9 

Trinectes maculatus 0.0 0.0 0.0 0.0 0.0 74,644.7 136,347.5 Unidentified fish remains 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Unidentified shrimp remains 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

TOTAL 2,253,044.2 1,111,610.8 5,354,753.7 4,418,878.1 2,371,247.8 7,109,906.4 10,618,061.9 
Table B-18: Estimated total weekly entrainment (juvenile) based on actual flow data during the NIGHT sample block. Data in 

N:\CLIENT\CLECO\Teche\IM&E Characterization\Characterization Report\Appendix\Appendix B-Final 1 IME Report.doc 

SAMPLE WEEK Æ 09-03-06 09-10-06 09-17-06 09-24-06 10-01-06 10-08-06 10-15-06 10-22-

Anchoa mitchilli 464,697.9 3,923,541.5 696,331.4 2,658,975.2 209,999.5 360,042.6 2,552,356.3 34,239

Anguilla rostrata 0.0 24,144.9 0.0 0.0 9,130.4 0.0 7,050.7 0Aplodinotus grunniens 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0Ariopsis felis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0Brevoortia patronus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0Callinectes sapidus 0.0 217,303.8 10,712.8 0.0 0.0 203,101.0 35,253.5 0Citharichthys spilopterus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0Ctenogobius shufeldti 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0Cynoscion arenarius 10,102.1 0.0 10,712.8 0.0 0.0 0.0 0.0 0Dorosoma petenense 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0Farfantepenaeus aztecus 0.0 0.0 10,712.8 0.0 0.0 0.0 0.0 0Fundulus spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0

Gobiidae 40,408.5 144,869.2 0.0 0.0 36,521.7 46,159.3 56,405.7 0Gobioides broussonetii 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0Gobiosoma bosc 0.0 0.0 0.0 0.0 9,130.4 138,477.9 0.0 0Gobiosoma robustum 0.0 0.0 0.0 37,850.2 0.0 0.0 0.0 0Gobiosoma spp. 0.0 0.0 32,138.4 28,387.6 0.0 0.0 0.0 0

Heterandria formosa 10,102.1 0.0 0.0 0.0 0.0 0.0 0.0 0Ictaluridae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0Ictalurus furcatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0Ictalurus punctatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0Larimus fasciatus 10,102.1 0.0 0.0 0.0 0.0 0.0 0.0 0Lepomis spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0

Macrobrachium ohione 0.0 96,579.5 32,138.4 28,387.6 0.0 46,159.3 14,101.4 0Micropogonias undulatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0Phyllopodous branchiopoda 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0Sciaenidae 0.0 0.0 0.0 0.0 0.0 0.0 28,202.8 0Squilla empusa 0.0 24,144.9 0.0 0.0 0.0 0.0 0.0 0

Syngnathus scovelli 0.0 0.0 0.0 0.0 0.0 9,231.9 0.0 0Taphromysis louisinae 282,859.6 1,352,112.8 10,712.8 1,561,320.0 1,734,778.5 1,606,344.0 2,763,877.5 84,963

Trinectes maculatus 0.0 36,217.3 0.0 9,462.5 0.0 0.0 0.0 0Unidentified fish remains 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0

Unidentified shrimp remains 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0

TOTAL 818,272.4 5,818,913.8 803,459.3 4,324,383.2 1,999,560.5 2,409,516.1 5,457,248.0 119,202
Table B-18: Estimated total weekly entrainment (juvenile) based on actual flow data during the NIGHT sample block. Data in 

N:\CLIENT\CLECO\Teche\IM&E Characterization\Characterization Report\Appendix\Appendix B-Final 1 IME Report.doc 

SAMPLE WEEK Æ 12-03-06 12-10-06 12-17-06 12-24-06 12-31-06 01-07-07 01-14-07 01-24-07 01-2

Anchoa mitchilli 77,152.0 60,786.7 43,419.1 21,582.7 21,329.1 21,329.1 0.0 12,812.3 25,

Anguilla rostrata 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Aplodinotus grunniens 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ariopsis felis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Brevoortia patronus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Callinectes sapidus 8,572.4 4,341.9 0.0 0.0 0.0 0.0 0.0 4,270.8 8,Citharichthys spilopterus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ctenogobius shufeldti 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Cynoscion arenarius 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Dorosoma petenense 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Farfantepenaeus aztecus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Fundulus spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Gobiidae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Gobioides broussonetii 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Gobiosoma bosc 8,572.4 4,341.9 0.0 0.0 0.0 0.0 0.0 0.0 Gobiosoma robustum 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Gobiosoma spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Heterandria formosa 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ictaluridae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ictalurus furcatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ictalurus punctatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Larimus fasciatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Lepomis spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Macrobrachium ohione 8,572.4 4,341.9 0.0 0.0 0.0 0.0 0.0 0.0 Micropogonias undulatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Phyllopodous branchiopoda 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Sciaenidae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Squilla empusa 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Syngnathus scovelli 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Taphromysis louisinae 222,883.5 160,650.5 95,521.9 60,431.6 59,721.5 59,721.5 25,624.7 42,707.8 60,

Trinectes maculatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Unidentified fish remains 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Unidentified shrimp remains 0.0 0.0 0.0 0.0 0.0 0.0 0.0 8,541.6 17,

TOTAL 325,752.9 234,462.9 138,941.0 82,014.3 81,050.5 81,050.5 25,624.7 68,332.4 111,
Table B-18: Estimated total weekly entrainment (juvenile) based on actual flow data during the NIGHT sample block. Data in 

N:\CLIENT\CLECO\Teche\IM&E Characterization\Characterization Report\Appendix\Appendix B-Final 1 IME Report.doc 

SAMPLE WEEK Æ 03-04-07 03-11-07 03-18-07 03-25-07 04-01-07 04-08-07 04-15-07 04-22

Anchoa mitchilli 429,417.1 166,919.9 36,927.4 64,726.4 60,417.8 8,631.1 34,735.2 27,1Anguilla rostrata 0.0 0.0 0.0 0.0 0.0 0.0 0.0 9,0

Aplodinotus grunniens 0.0 0.0 0.0 0.0 0.0 8,631.1 0.0 Ariopsis felis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Brevoortia patronus 0.0 0.0 14,202.9 24,894.8 86,311.2 690,489.4 182,360.0 551,9

Callinectes sapidus 0.0 8,785.3 1,420.3 2,489.5 0.0 0.0 0.0 

Citharichthys spilopterus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 9,0Ctenogobius shufeldti 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Cynoscion arenarius 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Dorosoma petenense 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Farfantepenaeus aztecus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Fundulus spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Gobiidae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Gobioides broussonetii 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Gobiosoma bosc 0.0 0.0 1,420.3 2,489.5 8,631.1 0.0 0.0 Gobiosoma robustum 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Gobiosoma spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Heterandria formosa 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ictaluridae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ictalurus furcatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ictalurus punctatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Larimus fasciatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Lepomis spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Macrobrachium ohione 0.0 8,785.3 4,260.9 7,468.4 17,262.2 8,631.1 17,367.6 18,0

Micropogonias undulatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Phyllopodous branchiopoda 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Sciaenidae 17,176.7 0.0 0.0 0.0 0.0 0.0 0.0 Squilla empusa 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Syngnathus scovelli 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Taphromysis louisinae 68,706.7 26,355.8 9,942.0 17,426.3 34,524.5 17,262.2 199,727.6 162,8

Trinectes maculatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Unidentified fish remains 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Unidentified shrimp remains 0.0 0.0 0.0 0.0 0.0 0.0 0.0 TOTAL 515,300.5 210,846.2 68,173.8 119,494.9 207,146.8 733,645.0 434,190.5 778,1
Table B-19: Total weekly impingement (adult) densities (number per 8-hour sample block) as sampled during the MORNING s

SHADED columns were derived by averaging from adjacent weeks. N:\CLIENT\CLECO\Teche\IM&E Characterization\Characterization Report\Appendix\Appendix B-Final 1 IME Report.doc 

SAMPLE WEEK Æ 06-04-06 06-11-06 06-18-06 06-25-06 07-02-06 07-09-06 07-16-06 07-23-07 07-30-06 08-06-06 08-13-06 

Alosa chrysochloris 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ameiurus melas 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ameiurus natalis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Anchoa mitchilli 15.0 0.0 2.0 3.0 8.0 6.5 5.0 3.0 1.0 8.0 15.0 

Anguilla rostrata 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Aphredoderus sayanus 0.0 0.0 0.0 1.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Applodinotus grunniens 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ariopsis felis 0.0 0.0 0.0 1.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Bagre marinus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Bathygobius soporator 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Brevoortia patronus 5.0 11.0 6.0 1.0 2.0 1.5 1.0 0.5 0.0 0.0 0.0 

Callinectes sapidus 36.0 20.0 28.0 24.0 36.0 69.5 103.0 63.5 24.0 24.5 25.0 

Cambaridae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Citharichthys spilopterus 3.0 11.0 3.0 166.0 0.0 2.0 4.0 2.0 0.0 0.0 0.0 

Ctenogobius shufeldti 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Cynoscion arenarius 2.0 7.0 4.0 7.0 1.0 4.5 8.0 4.0 0.0 0.0 0.0 

Decapoda 0.0 0.0 0.0 0.0 1.0 0.5 0.0 0.0 0.0 0.0 0.0 

Dormitator maculatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Dorosoma cepedianum 0.0 0.0 2.0 0.0 1.0 0.5 0.0 0.0 0.0 0.0 0.0 

Dorosoma petenense 0.0 0.0 0.0 0.0 2.0 1.0 0.0 0.5 1.0 0.5 0.0 

Elops saurus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Farfantepenaeus aztecus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Gambusia affinis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Gobiidae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Gobioides broussonetii 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

gobionellus oceanicus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Gobiosoma bosc 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Ictalurus furcatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Ictalurus punctatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Ictiobus cyprinellus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Lepomis gulosus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Lepomis macrochirus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Lepomis megalotis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Lepomis symmetricus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Lucania parva 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Lutjanus griseus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Macrobrachium ohione 0.0 1.0 1.0 6.0 0.0 7.5 15.0 9.0 3.0 15.5 28.0 

Membras martinica 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Menidia beryllina 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Micropogonias undulatus 502.0 297.0 240.0 2,123.0 159.0 469.5 780.0 391.5 3.0 2.0 1.0 

Morone saxatilis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Mugil cephalus 1.0 0.0 0.0 1.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Orconectes hobbsi 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Orconectes spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Paralichthys lethostigma 0.0 0.0 0.0 1.0 0.0 0.0 0.0 1.0 2.0 2.5 3.0 

Polyodon spathula 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 
Table B-19: Total weekly impingement (adult) densities (number per 8-hour sample block) as sampled during the MORNING s

SHADED columns were derived by averaging from adjacent weeks. N:\CLIENT\CLECO\Teche\IM&E Characterization\Characterization Report\Appendix\Appendix B-Final 1 IME Report.doc 

SAMPLE WEEK Æ 06-04-06 06-11-06 06-18-06 06-25-06 07-02-06 07-09-06 07-16-06 07-23-07 07-30-06 08-06-06 08-13-06 

Pomoxis annularis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Prionotus tribulus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Pylodictis olivaris 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Rhithropanopeus harrisii 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Sciaenops ocellatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Sesarma cinereum 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Syngnathus scovelli 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Trinectes maculatus 10.0 1.0 12.0 13.0 0.0 0.5 1.0 3.5 6.0 3.0 0.0 

Uca rapax 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Uca subcylindrica 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Unid. Shrimp remains 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Veticambarus sp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 TOTAL 574.0 348.0 298.0 2,347.0 210.0 563.5 917.0 478.5 40.0 56.0 72.0 

SAMPLE WEEK Æ 09-03-06 09-10-06 09-17-06 09-24-06 10-01-06 10-08-06 10-15-06 10-22-06 10-29-06 11-05-06 11-12-06 

Alosa chrysochloris 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ameiurus melas 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ameiurus natalis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Anchoa mitchilli 0.0 119.0 17.0 28.0 15.0 13.0 65.0 20.0 29.0 17.0 7.0 

Anguilla rostrata 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Aphredoderus sayanus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Applodinotus grunniens 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ariopsis felis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 2.0 Bagre marinus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Bathygobius soporator 0.0 1.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Brevoortia patronus 0.0 0.0 0.0 0.0 0.0 0.0 1.0 0.0 0.0 0.0 0.0 Callinectes sapidus 11.0 58.0 40.0 13.0 43.0 32.0 109.0 27.0 23.0 50.0 31.0 Cambaridae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Citharichthys spilopterus 0.0 0.0 1.0 1.0 1.0 0.0 10.0 11.0 3.0 0.0 1.0 Ctenogobius shufeldti 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Cynoscion arenarius 1.0 42.0 17.0 1.0 2.0 6.0 58.0 0.0 0.0 1.0 0.0 Decapoda 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Dormitator maculatus 0.0 0.0 2.0 1.0 0.0 0.0 5.0 0.0 0.0 1.0 0.0 Dorosoma cepedianum 0.0 0.0 0.0 0.0 0.0 1.0 0.0 0.0 0.0 1.0 0.0 Dorosoma petenense 1.0 21.0 0.0 1.0 1.0 1.0 0.0 1.0 0.0 0.0 1.0 Elops saurus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Farfantepenaeus aztecus 0.0 725.0 135.0 175.0 126.0 0.0 273.0 105.0 157.0 28.0 1.0 Gambusia affinis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Gobiidae 0.0 0.0 0.0 0.0 0.0 1.0 0.0 0.0 0.0 0.0 0.0 Gobioides broussonetii 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 gobionellus oceanicus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Gobiosoma bosc 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ictalurus furcatus 1.0 1.0 1.0 0.0 0.0 0.0 1.0 0.0 0.0 1.0 0.0 
Table B-19: Total weekly impingement (adult) densities (number per 8-hour sample block) as sampled during the MORNING s

SHADED columns were derived by averaging from adjacent weeks. N:\CLIENT\CLECO\Teche\IM&E Characterization\Characterization Report\Appendix\Appendix B-Final 1 IME Report.doc 

SAMPLE WEEK Æ 09-03-06 09-10-06 09-17-06 09-24-06 10-01-06 10-08-06 10-15-06 10-22-06 10-29-06 11-05-06 11-12-06 

Ictalurus punctatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ictiobus cyprinellus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Lepomis gulosus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Lepomis macrochirus 0.0 1.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Lepomis megalotis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Lepomis symmetricus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Lucania parva 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Lutjanus griseus 0.0 0.0 0.0 0.0 0.0 0.0 6.0 0.0 0.0 1.0 2.0 Macrobrachium ohione 4.0 81.0 13.0 3.0 3.0 109.0 17.0 9.0 7.0 10.0 10.0 Membras martinica 0.0 1.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Menidia beryllina 0.0 0.0 1.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Micropogonias undulatus 0.0 1.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Morone saxatilis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Mugil cephalus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Orconectes hobbsi 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Orconectes spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Paralichthys lethostigma 0.0 0.0 0.0 0.0 0.0 0.0 1.0 0.0 1.0 0.0 2.0 Polyodon spathula 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Pomoxis annularis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Prionotus tribulus 0.0 0.0 0.0 0.0 0.0 0.0 4.0 0.0 0.0 0.0 0.0 Pylodictis olivaris 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Rhithropanopeus harrisii 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Sciaenops ocellatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 1.0 Sesarma cinereum 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Syngnathus scovelli 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Trinectes maculatus 27.0 31.0 7.0 26.0 9.0 8.0 13.0 10.0 20.0 5.0 8.0 Uca rapax 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Uca subcylindrica 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Unid. Shrimp remains 0.0 1,638.0 308.0 181.0 162.0 0.0 84.0 0.0 0.0 2.0 1.0 Veticambarus sp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 TOTAL 45.0 2,720.0 542.0 430.0 362.0 171.0 647.0 183.0 240.0 117.0 67.0 

SAMPLE WEEK Æ 12-03-06 12-10-06 12-17-06 12-24-06 12-31-06 01-07-07 01-14-07 01-24-07 01-28-07 02-04-07 

Alosa chrysochloris 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ameiurus melas 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Ameiurus natalis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Anchoa mitchilli 36.0 22.5 9.0 5.5 2.0 2.0 2.0 4.0 6.0 7.0 

Anguilla rostrata 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Aphredoderus sayanus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Applodinotus grunniens 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Ariopsis felis 7.0 3.5 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Bagre marinus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Bathygobius soporator 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 
Table B-19: Total weekly impingement (adult) densities (number per 8-hour sample block) as sampled during the MORNING s

SHADED columns were derived by averaging from adjacent weeks. N:\CLIENT\CLECO\Teche\IM&E Characterization\Characterization Report\Appendix\Appendix B-Final 1 IME Report.doc 

SAMPLE WEEK Æ 12-03-06 12-10-06 12-17-06 12-24-06 12-31-06 01-07-07 01-14-07 01-24-07 01-28-07 02-04-07 

Brevoortia patronus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Callinectes sapidus 3.0 3.5 4.0 9.0 14.0 9.0 4.0 3.0 2.0 0.0 

Cambaridae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Citharichthys spilopterus 0.0 0.0 0.0 0.0 0.0 1.5 3.0 1.5 0.0 0.0 

Ctenogobius shufeldti 0.0 0.0 0.0 0.0 0.0 0.5 1.0 1.5 2.0 5.0 

Cynoscion arenarius 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Decapoda 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Dormitator maculatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.5 1.0 0.0 

Dorosoma cepedianum 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Dorosoma petenense 1.0 1.0 1.0 0.5 0.0 0.5 1.0 0.5 0.0 0.0 

Elops saurus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Farfantepenaeus aztecus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Gambusia affinis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Gobiidae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Gobioides broussonetii 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.5 1.0 3.0 

gobionellus oceanicus 1.0 0.5 0.0 0.5 1.0 0.5 0.0 0.5 1.0 0.0 

Gobiosoma bosc 0.0 0.5 1.0 0.5 0.0 0.0 0.0 0.0 0.0 0.0 

Ictalurus furcatus 0.0 2.0 4.0 3.0 2.0 2.0 2.0 1.0 0.0 1.0 

Ictalurus punctatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Ictiobus cyprinellus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Lepomis gulosus 0.0 0.0 0.0 1.0 2.0 1.0 0.0 0.0 0.0 0.0 

Lepomis macrochirus 0.0 0.0 0.0 0.0 0.0 1.5 3.0 1.5 0.0 0.0 

Lepomis megalotis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Lepomis symmetricus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Lucania parva 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Lutjanus griseus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Macrobrachium ohione 24.0 17.0 10.0 14.5 19.0 18.0 17.0 27.0 37.0 21.0 

Membras martinica 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Menidia beryllina 0.0 0.0 0.0 0.5 1.0 0.5 0.0 0.0 0.0 0.0 

Micropogonias undulatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Morone saxatilis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Mugil cephalus 0.0 0.0 0.0 0.5 1.0 0.5 0.0 0.0 0.0 1.0 

Orconectes hobbsi 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Orconectes spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Paralichthys lethostigma 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Polyodon spathula 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Pomoxis annularis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Prionotus tribulus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Pylodictis olivaris 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Rhithropanopeus harrisii 0.0 0.0 0.0 3.0 6.0 4.0 2.0 2.0 2.0 0.0 

Sciaenops ocellatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Sesarma cinereum 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Syngnathus scovelli 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Trinectes maculatus 10.0 7.0 4.0 17.0 30.0 56.0 82.0 43.0 4.0 1.0 

Uca rapax 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Uca subcylindrica 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 
Table B-19: Total weekly impingement (adult) densities (number per 8-hour sample block) as sampled during the MORNING s

SHADED columns were derived by averaging from adjacent weeks. N:\CLIENT\CLECO\Teche\IM&E Characterization\Characterization Report\Appendix\Appendix B-Final 1 IME Report.doc 

SAMPLE WEEK Æ 12-03-06 12-10-06 12-17-06 12-24-06 12-31-06 01-07-07 01-14-07 01-24-07 01-28-07 02-04-07 

Unid. Shrimp remains 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Veticambarus sp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

TOTAL 82.0 57.5 33.0 55.5 78.0 97.5 117.0 86.5 56.0 39.0 

SAMPLE WEEK Æ 03-04-07 03-11-07 03-18-07 03-25-07 04-01-07 04-08-07 04-15-07 04-22-07 04-29-07 05-06-07 05-1

Alosa chrysochloris 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ameiurus melas 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ameiurus natalis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Anchoa mitchilli 9.0 5.0 4.0 4.0 3.0 23.0 4.0 12.0 3.0 15.0 3Anguilla rostrata 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Aphredoderus sayanus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Applodinotus grunniens 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ariopsis felis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Bagre marinus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Bathygobius soporator 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Brevoortia patronus 0.0 0.0 0.0 0.0 0.0 1.0 0.0 0.0 4.0 5.0 2Callinectes sapidus 1.0 6.0 4.5 4.5 3.0 2.0 8.0 2.0 1.0 19.0 4Cambaridae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Citharichthys spilopterus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ctenogobius shufeldti 0.0 2.0 1.0 1.0 0.0 2.0 2.0 0.0 0.0 0.0 Cynoscion arenarius 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Decapoda 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Dormitator maculatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Dorosoma cepedianum 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Dorosoma petenense 1.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Elops saurus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Farfantepenaeus aztecus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Gambusia affinis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Gobiidae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Gobioides broussonetii 1.0 0.0 0.0 0.0 0.0 1.0 1.0 1.0 0.0 0.0 gobionellus oceanicus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Gobiosoma bosc 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ictalurus furcatus 0.0 0.0 0.0 0.0 0.0 3.0 0.0 0.0 0.0 0.0 Ictalurus punctatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 1.0 Ictiobus cyprinellus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Lepomis gulosus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Lepomis macrochirus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Lepomis megalotis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Lepomis symmetricus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Lucania parva 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Lutjanus griseus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Macrobrachium ohione 16.0 54.0 32.0 32.0 10.0 30.0 15.0 12.0 5.0 57.0 21Membras martinica 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Menidia beryllina 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Micropogonias undulatus 5.0 3.0 5.0 5.0 7.0 2.0 7.0 14.0 7.0 13.0 18Morone saxatilis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 
Table B-19: Total weekly impingement (adult) densities (number per 8-hour sample block) as sampled during the MORNING s

SHADED columns were derived by averaging from adjacent weeks. N:\CLIENT\CLECO\Teche\IM&E Characterization\Characterization Report\Appendix\Appendix B-Final 1 IME Report.doc 

SAMPLE WEEK Æ 03-04-07 03-11-07 03-18-07 03-25-07 04-01-07 04-08-07 04-15-07 04-22-07 04-29-07 05-06-07 05-1

Mugil cephalus 1.0 1.0 0.5 0.5 0.0 0.0 0.0 0.0 0.0 0.0 Orconectes hobbsi 0.0 1.0 0.5 0.5 0.0 0.0 0.0 0.0 0.0 0.0 Orconectes spp. 0.0 0.0 0.0 0.0 0.0 0.0 1.0 0.0 0.0 0.0 Paralichthys lethostigma 1.0 0.0 0.0 0.0 0.0 0.0 0.0 1.0 0.0 1.0 1Polyodon spathula 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Pomoxis annularis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Prionotus tribulus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Pylodictis olivaris 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 1.0 0.0 Rhithropanopeus harrisii 0.0 0.0 0.0 0.0 0.0 0.0 0.0 1.0 0.0 0.0 Sciaenops ocellatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Sesarma cinereum 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Syngnathus scovelli 0.0 0.0 0.0 0.0 0.0 0.0 0.0 1.0 0.0 0.0 Trinectes maculatus 3.0 7.0 7.5 7.5 8.0 13.0 4.0 5.0 5.0 41.0 11Uca rapax 0.0 0.0 0.5 0.5 1.0 0.0 0.0 0.0 0.0 0.0 Uca subcylindrica 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Unid. Shrimp remains 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Veticambarus sp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 TOTAL 38.0 79.0 55.5 55.5 32.0 77.0 42.0 49.0 26.0 152.0 62
Table B-20: Estimated total weekly impingement (adult) based on design flow data during the MORNING sample block (Estim

design flow). Data in SHADED columns were derived by averaging from adjacent weeks. 

N:\CLIENT\CLECO\Teche\IM&E Characterization\Characterization Report\Appendix\Appendix B-Final 1 IME Report.doc 

SAMPLE WEEK Æ 06-04-06 06-11-06 06-18-06 06-25-06 07-02-06 07-09-06 07-16-06 07-23-07 07-30-06 08-06-06 

Alosa chrysochloris 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ameiurus melas 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ameiurus natalis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Anchoa mitchilli 275.8 0.0 18.4 27.6 73.6 59.8 46.0 27.6 9.2 73.6 Anguilla rostrata 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Aphredoderus sayanus 0.0 0.0 0.0 9.2 0.0 0.0 0.0 0.0 0.0 0.0 Applodinotus grunniens 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ariopsis felis 0.0 0.0 0.0 9.2 0.0 0.0 0.0 0.0 0.0 0.0 Bagre marinus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Bathygobius soporator 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Brevoortia patronus 91.9 202.3 55.2 9.2 18.4 13.8 9.2 4.6 0.0 0.0 Callinectes sapidus 662.0 367.8 257.4 220.7 331.0 639.0 947.0 583.8 220.7 225.3 Cambaridae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Citharichthys spilopterus 55.2 202.3 27.6 1,526.2 0.0 18.4 36.8 18.4 0.0 0.0 

Ctenogobius shufeldti 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Cynoscion arenarius 36.8 128.7 36.8 64.4 9.2 41.4 73.6 36.8 0.0 0.0 

Decapoda 0.0 0.0 0.0 0.0 9.2 4.6 0.0 0.0 0.0 0.0 

Dormitator maculatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Dorosoma cepedianum 0.0 0.0 18.4 0.0 9.2 4.6 0.0 0.0 0.0 0.0 

Dorosoma petenense 0.0 0.0 0.0 0.0 18.4 9.2 0.0 4.6 9.2 4.6 

Elops saurus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Farfantepenaeus aztecus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Gambusia affinis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Gobiidae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Gobioides broussonetii 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

gobionellus oceanicus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Gobiosoma bosc 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Ictalurus furcatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Ictalurus punctatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Ictiobus cyprinellus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Lepomis gulosus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Lepomis macrochirus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Lepomis megalotis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Lepomis symmetricus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Lucania parva 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Lutjanus griseus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Macrobrachium ohione 0.0 18.4 9.2 55.2 0.0 69.0 137.9 82.7 27.6 142.5 

Membras martinica 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Menidia beryllina 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Micropogonias undulatus 9,230.8 5,461.3 2,206.6 19,518.9 1,461.9 4,316.6 7,171.3 3,599.5 27.6 18.4 

Morone saxatilis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Mugil cephalus 18.4 0.0 0.0 9.2 0.0 0.0 0.0 0.0 0.0 0.0 

Orconectes hobbsi 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Orconectes spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 
Table B-20: Estimated total weekly impingement (adult) based on design flow data during the MORNING sample block (Estim

design flow). Data in SHADED columns were derived by averaging from adjacent weeks. 

N:\CLIENT\CLECO\Teche\IM&E Characterization\Characterization Report\Appendix\Appendix B-Final 1 IME Report.doc 

SAMPLE WEEK Æ 06-04-06 06-11-06 06-18-06 06-25-06 07-02-06 07-09-06 07-16-06 07-23-07 07-30-06 08-06-06 

Paralichthys lethostigma 0.0 0.0 0.0 9.2 0.0 0.0 0.0 9.2 18.4 23.0 Polyodon spathula 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Pomoxis annularis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Prionotus tribulus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Pylodictis olivaris 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Rhithropanopeus harrisii 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Sciaenops ocellatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Sesarma cinereum 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Syngnathus scovelli 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Trinectes maculatus 183.9 18.4 110.3 119.5 0.0 4.6 9.2 32.2 55.2 27.6 Uca rapax 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Uca subcylindrica 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Unid. Shrimp remains 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Veticambarus sp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

TOTAL 10,554.7 6,399.0 2,739.8 21,578.4 1,930.7 5,180.8 8,430.9 4,399.3 367.8 514.9 

SAMPLE WEEK Æ 09-03-06 09-10-06 09-17-06 09-24-06 10-01-06 10-08-06 10-15-06 10-22-06 10-29-06 11-05-06 

Alosa chrysochloris 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ameiurus melas 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ameiurus natalis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Anchoa mitchilli 0.0 1,094.1 312.6 514.9 275.8 239.0 1,195.2 367.8 533.3 312.6 

Anguilla rostrata 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Aphredoderus sayanus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Applodinotus grunniens 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ariopsis felis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Bagre marinus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Bathygobius soporator 0.0 9.2 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Brevoortia patronus 0.0 0.0 0.0 0.0 0.0 0.0 18.4 0.0 0.0 0.0 Callinectes sapidus 202.3 533.3 735.5 239.0 790.7 588.4 2,004.3 496.5 422.9 919.4 Cambaridae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Citharichthys spilopterus 0.0 0.0 18.4 18.4 18.4 0.0 183.9 202.3 55.2 0.0 Ctenogobius shufeldti 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Cynoscion arenarius 18.4 386.1 312.6 18.4 36.8 110.3 1,066.5 0.0 0.0 18.4 Decapoda 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Dormitator maculatus 0.0 0.0 36.8 18.4 0.0 0.0 91.9 0.0 0.0 18.4 Dorosoma cepedianum 0.0 0.0 0.0 0.0 0.0 18.4 0.0 0.0 0.0 18.4 Dorosoma petenense 18.4 193.1 0.0 18.4 18.4 18.4 0.0 18.4 0.0 0.0 Elops saurus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Farfantepenaeus aztecus 0.0 6,665.7 2,482.4 3,217.9 2,316.9 0.0 5,019.9 1,930.7 2,886.9 514.9 Gambusia affinis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Gobiidae 0.0 0.0 0.0 0.0 0.0 18.4 0.0 0.0 0.0 0.0 Gobioides broussonetii 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 
Table B-20: Estimated total weekly impingement (adult) based on design flow data during the MORNING sample block (Estim

design flow). Data in SHADED columns were derived by averaging from adjacent weeks. 

N:\CLIENT\CLECO\Teche\IM&E Characterization\Characterization Report\Appendix\Appendix B-Final 1 IME Report.doc 

SAMPLE WEEK Æ 09-03-06 09-10-06 09-17-06 09-24-06 10-01-06 10-08-06 10-15-06 10-22-06 10-29-06 11-05-06 

gobionellus oceanicus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Gobiosoma bosc 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ictalurus furcatus 18.4 9.2 18.4 0.0 0.0 0.0 18.4 0.0 0.0 18.4 Ictalurus punctatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ictiobus cyprinellus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Lepomis gulosus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Lepomis macrochirus 0.0 9.2 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Lepomis megalotis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Lepomis symmetricus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Lucania parva 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Lutjanus griseus 0.0 0.0 0.0 0.0 0.0 0.0 110.3 0.0 0.0 18.4 Macrobrachium ohione 73.6 744.7 239.0 55.2 55.2 2,004.3 312.6 165.5 128.7 183.9 Membras martinica 0.0 9.2 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Menidia beryllina 0.0 0.0 18.4 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Micropogonias undulatus 0.0 9.2 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Morone saxatilis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Mugil cephalus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Orconectes hobbsi 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Orconectes spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Paralichthys lethostigma 0.0 0.0 0.0 0.0 0.0 0.0 18.4 0.0 18.4 0.0 Polyodon spathula 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Pomoxis annularis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Prionotus tribulus 0.0 0.0 0.0 0.0 0.0 0.0 73.6 0.0 0.0 0.0 Pylodictis olivaris 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Rhithropanopeus harrisii 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Sciaenops ocellatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Sesarma cinereum 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Syngnathus scovelli 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Trinectes maculatus 496.5 285.0 128.7 478.1 165.5 147.1 239.0 183.9 367.8 91.9 Uca rapax 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Uca subcylindrica 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Unid. Shrimp remains 0.0 15,059.8 5,663.5 3,328.2 2,978.9 0.0 1,544.6 0.0 0.0 36.8 Veticambarus sp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 TOTAL 827.5 25,007.8 9,966.3 7,906.9 6,656.5 3,144.4 11,897.1 3,365.0 4,413.1 2,151.4 1

SAMPLE WEEK Æ 12-03-06 12-10-06 12-17-06 12-24-06 12-31-06 01-07-07 01-14-07 01-24-07 01-28-07 02-04-07 

Alosa chrysochloris 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ameiurus melas 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ameiurus natalis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Anchoa mitchilli 662.0 413.7 165.5 101.1 36.8 36.8 36.8 73.6 110.3 128.7 

Anguilla rostrata 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Aphredoderus sayanus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Applodinotus grunniens 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 
Table B-20: Estimated total weekly impingement (adult) based on design flow data during the MORNING sample block (Estim

design flow). Data in SHADED columns were derived by averaging from adjacent weeks. 

N:\CLIENT\CLECO\Teche\IM&E Characterization\Characterization Report\Appendix\Appendix B-Final 1 IME Report.doc 

SAMPLE WEEK Æ 12-03-06 12-10-06 12-17-06 12-24-06 12-31-06 01-07-07 01-14-07 01-24-07 01-28-07 02-04-07 

Ariopsis felis 128.7 64.4 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Bagre marinus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Bathygobius soporator 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Brevoortia patronus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Callinectes sapidus 55.2 64.4 73.6 165.5 257.4 165.5 73.6 55.2 36.8 0.0 

Cambaridae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Citharichthys spilopterus 0.0 0.0 0.0 0.0 0.0 27.6 55.2 27.6 0.0 0.0 

Ctenogobius shufeldti 0.0 0.0 0.0 0.0 0.0 9.2 18.4 27.6 36.8 91.9 Cynoscion arenarius 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Decapoda 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Dormitator maculatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 9.2 18.4 0.0 

Dorosoma cepedianum 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Dorosoma petenense 18.4 18.4 18.4 9.2 0.0 9.2 18.4 9.2 0.0 0.0 

Elops saurus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Farfantepenaeus aztecus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Gambusia affinis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Gobiidae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Gobioides broussonetii 0.0 0.0 0.0 0.0 0.0 0.0 0.0 9.2 18.4 55.2 

gobionellus oceanicus 18.4 9.2 0.0 9.2 18.4 9.2 0.0 9.2 18.4 0.0 

Gobiosoma bosc 0.0 9.2 18.4 9.2 0.0 0.0 0.0 0.0 0.0 0.0 Ictalurus furcatus 0.0 36.8 73.6 55.2 36.8 36.8 36.8 18.4 0.0 18.4 

Ictalurus punctatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Ictiobus cyprinellus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Lepomis gulosus 0.0 0.0 0.0 18.4 36.8 18.4 0.0 0.0 0.0 0.0 

Lepomis macrochirus 0.0 0.0 0.0 0.0 0.0 27.6 55.2 27.6 0.0 0.0 

Lepomis megalotis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Lepomis symmetricus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Lucania parva 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Lutjanus griseus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Macrobrachium ohione 441.3 312.6 183.9 266.6 349.4 331.0 312.6 496.5 680.4 386.1 

Membras martinica 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Menidia beryllina 0.0 0.0 0.0 9.2 18.4 9.2 0.0 0.0 0.0 0.0 

Micropogonias undulatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Morone saxatilis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Mugil cephalus 0.0 0.0 0.0 9.2 18.4 9.2 0.0 0.0 0.0 18.4 

Orconectes hobbsi 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Orconectes spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Paralichthys lethostigma 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Polyodon spathula 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Pomoxis annularis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Prionotus tribulus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Pylodictis olivaris 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Rhithropanopeus harrisii 0.0 0.0 0.0 55.2 110.3 73.6 36.8 36.8 36.8 0.0 

Sciaenops ocellatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Sesarma cinereum 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Syngnathus scovelli 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 
Table B-20: Estimated total weekly impingement (adult) based on design flow data during the MORNING sample block (Estim

design flow). Data in SHADED columns were derived by averaging from adjacent weeks. 

N:\CLIENT\CLECO\Teche\IM&E Characterization\Characterization Report\Appendix\Appendix B-Final 1 IME Report.doc 

SAMPLE WEEK Æ 12-03-06 12-10-06 12-17-06 12-24-06 12-31-06 01-07-07 01-14-07 01-24-07 01-28-07 02-04-07 

Trinectes maculatus 183.9 128.7 73.6 312.6 551.6 1,029.7 1,507.8 790.7 73.6 18.4 Uca rapax 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Uca subcylindrica 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Unid. Shrimp remains 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Veticambarus sp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 TOTAL 1,507.8 1,057.3 606.8 1,020.5 1,434.3 1,792.8 2,151.4 1,590.6 1,029.7 717.1 

SAMPLE WEEK Æ 03-04-07 03-11-07 03-18-07 03-25-07 04-01-07 04-08-07 04-15-07 04-22-07 04-29-07 05-06-07 05-1

Alosa chrysochloris 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ameiurus melas 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ameiurus natalis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Anchoa mitchilli 165.5 91.9 73.6 73.6 55.2 422.9 73.6 220.7 55.2 275.8 66Anguilla rostrata 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Aphredoderus sayanus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Applodinotus grunniens 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ariopsis felis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Bagre marinus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Bathygobius soporator 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Brevoortia patronus 0.0 0.0 0.0 0.0 0.0 18.4 0.0 0.0 73.6 91.9 36Callinectes sapidus 18.4 110.3 82.7 82.7 55.2 36.8 147.1 36.8 18.4 349.4 73Cambaridae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Citharichthys spilopterus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ctenogobius shufeldti 0.0 36.8 18.4 18.4 0.0 36.8 36.8 0.0 0.0 0.0 1Cynoscion arenarius 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 1Decapoda 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Dormitator maculatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Dorosoma cepedianum 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Dorosoma petenense 18.4 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Elops saurus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Farfantepenaeus aztecus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Gambusia affinis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Gobiidae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Gobioides broussonetii 18.4 0.0 0.0 0.0 0.0 18.4 18.4 18.4 0.0 0.0 1gobionellus oceanicus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Gobiosoma bosc 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ictalurus furcatus 0.0 0.0 0.0 0.0 0.0 55.2 0.0 0.0 0.0 0.0 Ictalurus punctatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 18.4 3Ictiobus cyprinellus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 5Lepomis gulosus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Lepomis macrochirus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Lepomis megalotis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Lepomis symmetricus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Lucania parva 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Lutjanus griseus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Macrobrachium ohione 294.2 993.0 588.4 588.4 183.9 551.6 275.8 220.7 91.9 1,048.1 3,86Membras martinica 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 3
Table B-20: Estimated total weekly impingement (adult) based on design flow data during the MORNING sample block (Estim

design flow). Data in SHADED columns were derived by averaging from adjacent weeks. 

N:\CLIENT\CLECO\Teche\IM&E Characterization\Characterization Report\Appendix\Appendix B-Final 1 IME Report.doc 

SAMPLE WEEK Æ 03-04-07 03-11-07 03-18-07 03-25-07 04-01-07 04-08-07 04-15-07 04-22-07 04-29-07 05-06-07 05-1

Menidia beryllina 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Micropogonias undulatus 91.9 55.2 91.9 91.9 128.7 36.8 128.7 257.4 128.7 239.0 3,40Morone saxatilis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Mugil cephalus 18.4 18.4 9.2 9.2 0.0 0.0 0.0 0.0 0.0 0.0 Orconectes hobbsi 0.0 18.4 9.2 9.2 0.0 0.0 0.0 0.0 0.0 0.0 Orconectes spp. 0.0 0.0 0.0 0.0 0.0 0.0 18.4 0.0 0.0 0.0 Paralichthys lethostigma 18.4 0.0 0.0 0.0 0.0 0.0 0.0 18.4 0.0 18.4 25Polyodon spathula 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Pomoxis annularis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Prionotus tribulus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Pylodictis olivaris 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 18.4 0.0 Rhithropanopeus harrisii 0.0 0.0 0.0 0.0 0.0 0.0 0.0 18.4 0.0 0.0 Sciaenops ocellatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Sesarma cinereum 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Syngnathus scovelli 0.0 0.0 0.0 0.0 0.0 0.0 0.0 18.4 0.0 0.0 Trinectes maculatus 55.2 128.7 137.9 137.9 147.1 239.0 73.6 91.9 91.9 753.9 2,02Uca rapax 0.0 0.0 9.2 9.2 18.4 0.0 0.0 0.0 0.0 0.0 Uca subcylindrica 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Unid. Shrimp remains 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Veticambarus sp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 TOTAL 698.7 1,452.7 1,020.5 1,020.5 588.4 1,415.9 772.3 901.0 478.1 2,795.0 11,49
Table B-21: Estimated total weekly impingement (adult) densities based on actual flow data during the MORNING sample bloc

columns were derived by averaging from adjacent weeks. 

N:\CLIENT\CLECO\Teche\IM&E Characterization\Characterization Report\Appendix\Appendix B-Final 1 IME Report.doc 

SAMPLE WEEK 

Æ 06-04-06 06-11-06 06-18-06 06-25-06 07-02-06 07-09-06 07-16-06 07-23-07 07-30-06 08-06-06 

Alosa chrysochloris 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ameiurus melas 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ameiurus natalis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Anchoa mitchilli 168.2 0.0 14.0 21.0 56.1 45.5 35.0 20.8 6.6 50.9 

Anguilla rostrata 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Aphredoderus sayanus 0.0 0.0 0.0 7.0 0.0 0.0 0.0 0.0 0.0 0.0 Applodinotus grunniens 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ariopsis felis 0.0 0.0 0.0 7.0 0.0 0.0 0.0 0.0 0.0 0.0 Bagre marinus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Bathygobius soporator 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Brevoortia patronus 56.1 133.9 42.0 7.0 14.0 10.5 7.0 3.5 0.0 0.0 Callinectes sapidus 403.8 243.5 196.1 168.2 252.2 486.6 721.0 440.1 159.2 158.9 

Cambaridae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Citharichthys spilopterus 33.6 133.9 21.0 1,163.2 0.0 14.0 28.0 14.0 0.0 0.0 Ctenogobius shufeldti 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Cynoscion arenarius 22.4 85.2 28.0 49.1 7.0 31.5 56.0 28.0 0.0 0.0 Decapoda 0.0 0.0 0.0 0.0 7.0 3.5 0.0 0.0 0.0 0.0 Dormitator maculatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Dorosoma cepedianum 0.0 0.0 14.0 0.0 7.0 3.5 0.0 0.0 0.0 0.0 Dorosoma petenense 0.0 0.0 0.0 0.0 14.0 7.0 0.0 3.3 6.6 3.3 

Elops saurus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Farfantepenaeus aztecus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Gambusia affinis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Gobiidae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Gobioides broussonetii 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 gobionellus oceanicus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Gobiosoma bosc 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ictalurus furcatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Ictalurus punctatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ictiobus cyprinellus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Lepomis gulosus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Lepomis macrochirus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Lepomis megalotis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Lepomis symmetricus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Lucania parva 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Lutjanus griseus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Macrobrachium ohione 0.0 12.2 7.0 42.0 0.0 52.5 105.0 62.4 19.9 98.7 

Membras martinica 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Menidia beryllina 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Micropogonias undulatus 5,630.7 3,615.9 1,681.0 14,876.6 1,114.0 3,287.0 5,460.0 2,739.9 19.9 13.1 Morone saxatilis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Mugil cephalus 11.2 0.0 0.0 7.0 0.0 0.0 0.0 0.0 0.0 0.0 Orconectes hobbsi 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Orconectes spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 
Table B-21: Estimated total weekly impingement (adult) densities based on actual flow data during the MORNING sample bloc

columns were derived by averaging from adjacent weeks. 

N:\CLIENT\CLECO\Teche\IM&E Characterization\Characterization Report\Appendix\Appendix B-Final 1 IME Report.doc 

SAMPLE WEEK 

Æ 06-04-06 06-11-06 06-18-06 06-25-06 07-02-06 07-09-06 07-16-06 07-23-07 07-30-06 08-06-06 

Paralichthys lethostigma 0.0 0.0 0.0 7.0 0.0 0.0 0.0 6.6 13.3 16.1 Polyodon spathula 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Pomoxis annularis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Prionotus tribulus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Pylodictis olivaris 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Rhithropanopeus harrisii 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Sciaenops ocellatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Sesarma cinereum 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Syngnathus scovelli 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Trinectes maculatus 112.2 12.2 84.0 91.1 0.0 3.5 7.0 23.4 39.8 19.9 

Uca rapax 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Uca subcylindrica 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Unid. Shrimp remains 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Veticambarus sp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 TOTAL 6,438.3 4,236.8 2,087.2 16,446.2 1,471.4 3,945.2 6,419.0 3,342.2 265.3 361.0 

SAMPLE WEEK 

Æ 09-03-06 09-10-06 09-17-06 09-24-06 10-01-06 10-08-06 10-15-06 10-22-06 10-29-06 11-05-06 

Alosa chrysochloris 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ameiurus melas 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ameiurus natalis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Anchoa mitchilli 0.0 590.0 149.6 217.6 112.5 98.6 376.5 20.8 122.5 124.9 Anguilla rostrata 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Aphredoderus sayanus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Applodinotus grunniens 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ariopsis felis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Bagre marinus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Bathygobius soporator 0.0 5.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Brevoortia patronus 0.0 0.0 0.0 0.0 0.0 0.0 5.8 0.0 0.0 0.0 Callinectes sapidus 91.3 287.6 352.0 101.0 322.5 242.7 631.3 28.1 97.2 367.5 Cambaridae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Citharichthys spilopterus 0.0 0.0 8.8 7.8 7.5 0.0 57.9 11.5 12.7 0.0 Ctenogobius shufeldti 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Cynoscion arenarius 8.3 208.3 149.6 7.8 15.0 45.5 335.9 0.0 0.0 7.3 Decapoda 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Dormitator maculatus 0.0 0.0 17.6 7.8 0.0 0.0 29.0 0.0 0.0 7.3 Dorosoma cepedianum 0.0 0.0 0.0 0.0 0.0 7.6 0.0 0.0 0.0 7.3 Dorosoma petenense 8.3 104.1 0.0 7.8 7.5 7.6 0.0 1.0 0.0 0.0 Elops saurus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Farfantepenaeus aztecus 0.0 3,594.8 1,188.0 1,360.2 945.0 0.0 1,581.1 109.4 663.3 205.8 Gambusia affinis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Gobiidae 0.0 0.0 0.0 0.0 0.0 7.6 0.0 0.0 0.0 0.0 Gobioides broussonetii 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 
Table B-21: Estimated total weekly impingement (adult) densities based on actual flow data during the MORNING sample bloc

columns were derived by averaging from adjacent weeks. 

N:\CLIENT\CLECO\Teche\IM&E Characterization\Characterization Report\Appendix\Appendix B-Final 1 IME Report.doc 

SAMPLE WEEK 

Æ 09-03-06 09-10-06 09-17-06 09-24-06 10-01-06 10-08-06 10-15-06 10-22-06 10-29-06 11-05-06 

gobionellus oceanicus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Gobiosoma bosc 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ictalurus furcatus 8.3 5.0 8.8 0.0 0.0 0.0 5.8 0.0 0.0 7.3 Ictalurus punctatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ictiobus cyprinellus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Lepomis gulosus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Lepomis macrochirus 0.0 5.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Lepomis megalotis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Lepomis symmetricus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Lucania parva 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Lutjanus griseus 0.0 0.0 0.0 0.0 0.0 0.0 34.8 0.0 0.0 7.3 Macrobrachium ohione 33.2 401.6 114.4 23.3 22.5 826.6 98.5 9.4 29.6 73.5 Membras martinica 0.0 5.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Menidia beryllina 0.0 0.0 8.8 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Micropogonias undulatus 0.0 5.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Morone saxatilis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Mugil cephalus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Orconectes hobbsi 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Orconectes spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Paralichthys lethostigma 0.0 0.0 0.0 0.0 0.0 0.0 5.8 0.0 4.2 0.0 Polyodon spathula 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Pomoxis annularis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Prionotus tribulus 0.0 0.0 0.0 0.0 0.0 0.0 23.2 0.0 0.0 0.0 Pylodictis olivaris 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Rhithropanopeus harrisii 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Sciaenops ocellatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Sesarma cinereum 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Syngnathus scovelli 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Trinectes maculatus 224.1 153.7 61.6 202.1 67.5 60.7 75.3 10.4 84.5 36.7 Uca rapax 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Uca subcylindrica 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Unid. Shrimp remains 0.0 8,121.8 2,710.3 1,406.9 1,215.0 0.0 486.5 0.0 0.0 14.7 Veticambarus sp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 TOTAL 373.4 13,486.7 4,769.5 3,342.3 2,715.0 1,296.8 3,747.2 190.6 1,013.9 859.9 

SAMPLE WEEK 

Æ 12-03-06 12-10-06 12-17-06 12-24-06 12-31-06 01-07-07 01-14-07 01-24-07 01-28-07 02-04-07 

Alosa chrysochloris 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ameiurus melas 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ameiurus natalis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Anchoa mitchilli 253.5 158.8 64.2 39.1 14.0 14.0 14.0 28.1 42.3 49.3 Anguilla rostrata 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Aphredoderus sayanus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Applodinotus grunniens 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 
Table B-21: Estimated total weekly impingement (adult) densities based on actual flow data during the MORNING sample bloc

columns were derived by averaging from adjacent weeks. 

N:\CLIENT\CLECO\Teche\IM&E Characterization\Characterization Report\Appendix\Appendix B-Final 1 IME Report.doc 

SAMPLE WEEK 

Æ 12-03-06 12-10-06 12-17-06 12-24-06 12-31-06 01-07-07 01-14-07 01-24-07 01-28-07 02-04-07 

Ariopsis felis 49.3 24.6 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Bagre marinus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Bathygobius soporator 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Brevoortia patronus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Callinectes sapidus 21.1 24.8 28.5 63.3 98.1 63.1 28.1 21.1 14.1 0.0 Cambaridae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Citharichthys spilopterus 0.0 0.0 0.0 0.0 0.0 10.5 21.0 10.5 0.0 0.0 

Ctenogobius shufeldti 0.0 0.0 0.0 0.0 0.0 3.5 7.0 10.5 14.1 35.2 

Cynoscion arenarius 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Decapoda 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Dormitator maculatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 3.5 7.0 0.0 

Dorosoma cepedianum 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Dorosoma petenense 7.0 7.1 7.1 3.6 0.0 3.5 7.0 3.5 0.0 0.0 

Elops saurus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Farfantepenaeus aztecus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Gambusia affinis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Gobiidae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Gobioides broussonetii 0.0 0.0 0.0 0.0 0.0 0.0 0.0 3.5 7.0 21.1 

gobionellus oceanicus 7.0 3.5 0.0 3.5 7.0 3.5 0.0 3.5 7.0 0.0 Gobiosoma bosc 0.0 3.6 7.1 3.6 0.0 0.0 0.0 0.0 0.0 0.0 Ictalurus furcatus 0.0 14.3 28.5 21.3 14.0 14.0 14.0 7.0 0.0 7.0 Ictalurus punctatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Ictiobus cyprinellus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Lepomis gulosus 0.0 0.0 0.0 7.0 14.0 7.0 0.0 0.0 0.0 0.0 

Lepomis macrochirus 0.0 0.0 0.0 0.0 0.0 10.5 21.0 10.5 0.0 0.0 

Lepomis megalotis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Lepomis symmetricus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Lucania parva 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Lutjanus griseus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Macrobrachium ohione 169.0 120.2 71.3 102.2 133.2 126.2 119.3 189.9 260.5 148.0 

Membras martinica 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Menidia beryllina 0.0 0.0 0.0 3.5 7.0 3.5 0.0 0.0 0.0 0.0 

Micropogonias undulatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Morone saxatilis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Mugil cephalus 0.0 0.0 0.0 3.5 7.0 3.5 0.0 0.0 0.0 7.0 

Orconectes hobbsi 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Orconectes spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Paralichthys lethostigma 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Polyodon spathula 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Pomoxis annularis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Prionotus tribulus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Pylodictis olivaris 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Rhithropanopeus harrisii 0.0 0.0 0.0 21.0 42.0 28.0 14.0 14.1 14.1 0.0 

Sciaenops ocellatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Sesarma cinereum 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Syngnathus scovelli 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 
Table B-21: Estimated total weekly impingement (adult) densities based on actual flow data during the MORNING sample bloc

columns were derived by averaging from adjacent weeks. 

N:\CLIENT\CLECO\Teche\IM&E Characterization\Characterization Report\Appendix\Appendix B-Final 1 IME Report.doc 

SAMPLE WEEK 

Æ 12-03-06 12-10-06 12-17-06 12-24-06 12-31-06 01-07-07 01-14-07 01-24-07 01-28-07 02-04-07 

Trinectes maculatus 70.4 49.5 28.5 119.4 210.2 392.8 575.3 301.8 28.2 7.0 Uca rapax 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Uca subcylindrica 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Unid. Shrimp remains 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Veticambarus sp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 TOTAL 577.4 406.4 235.4 391.0 546.6 683.8 820.9 607.6 394.3 274.9 

SAMPLE WEEK 

Æ 03-04-07 03-11-07 03-18-07 03-25-07 04-01-07 04-08-07 04-15-07 04-22-07 04-29-07 05-06-07 05-1

Alosa chrysochloris 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ameiurus melas 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ameiurus natalis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Anchoa mitchilli 63.5 36.1 28.7 28.7 21.3 163.1 28.5 89.2 30.0 200.3 45Anguilla rostrata 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Aphredoderus sayanus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Applodinotus grunniens 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ariopsis felis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Bagre marinus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Bathygobius soporator 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Brevoortia patronus 0.0 0.0 0.0 0.0 0.0 7.1 0.0 0.0 39.9 66.8 25Callinectes sapidus 7.1 43.3 32.3 32.3 21.3 14.2 57.1 14.9 10.0 253.7 50Cambaridae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Citharichthys spilopterus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ctenogobius shufeldti 0.0 14.4 7.2 7.2 0.0 14.2 14.3 0.0 0.0 0.0 1Cynoscion arenarius 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 1Decapoda 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Dormitator maculatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Dorosoma cepedianum 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Dorosoma petenense 7.1 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Elops saurus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Farfantepenaeus aztecus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Gambusia affinis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Gobiidae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Gobioides broussonetii 7.1 0.0 0.0 0.0 0.0 7.1 7.1 7.4 0.0 0.0 1gobionellus oceanicus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Gobiosoma bosc 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ictalurus furcatus 0.0 0.0 0.0 0.0 0.0 21.3 0.0 0.0 0.0 0.0 Ictalurus punctatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 13.4 2Ictiobus cyprinellus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 3Lepomis gulosus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Lepomis macrochirus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Lepomis megalotis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Lepomis symmetricus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Lucania parva 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Lutjanus griseus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Macrobrachium ohione 112.9 389.7 230.3 230.3 70.9 212.7 107.0 89.2 49.9 761.1 2,62Membras martinica 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 2
Table B-21: Estimated total weekly impingement (adult) densities based on actual flow data during the MORNING sample bloc

columns were derived by averaging from adjacent weeks. 

N:\CLIENT\CLECO\Teche\IM&E Characterization\Characterization Report\Appendix\Appendix B-Final 1 IME Report.doc 

SAMPLE WEEK 

Æ 03-04-07 03-11-07 03-18-07 03-25-07 04-01-07 04-08-07 04-15-07 04-22-07 04-29-07 05-06-07 05-1

Menidia beryllina 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Micropogonias undulatus 35.3 21.6 35.6 35.6 49.6 14.2 49.9 104.1 69.9 173.6 2,31Morone saxatilis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Mugil cephalus 7.1 7.2 3.6 3.6 0.0 0.0 0.0 0.0 0.0 0.0 Orconectes hobbsi 0.0 7.2 3.6 3.6 0.0 0.0 0.0 0.0 0.0 0.0 Orconectes spp. 0.0 0.0 0.0 0.0 0.0 0.0 7.1 0.0 0.0 0.0 Paralichthys lethostigma 7.1 0.0 0.0 0.0 0.0 0.0 0.0 7.4 0.0 13.4 17Polyodon spathula 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Pomoxis annularis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Prionotus tribulus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Pylodictis olivaris 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 10.0 0.0 Rhithropanopeus harrisii 0.0 0.0 0.0 0.0 0.0 0.0 0.0 7.4 0.0 0.0 Sciaenops ocellatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Sesarma cinereum 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Syngnathus scovelli 0.0 0.0 0.0 0.0 0.0 0.0 0.0 7.4 0.0 0.0 Trinectes maculatus 21.2 50.5 53.6 53.6 56.7 92.2 28.5 37.2 49.9 547.5 1,37Uca rapax 0.0 0.0 3.5 3.5 7.1 0.0 0.0 0.0 0.0 0.0 Uca subcylindrica 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Unid. Shrimp remains 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Veticambarus sp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 TOTAL 268.1 570.1 398.5 398.5 226.9 545.9 299.6 364.2 259.6 2,029.6 7,81
Table B-22: Total weekly impingement (adult) densities (number per 8-hour sample block) as sampled during the DAY sample 

SHADED columns were derived by averaging from adjacent weeks. 

N:\CLIENT\CLECO\Teche\IM&E Characterization\Characterization Report\Appendix\Appendix B-Final 1 IME Report.doc 

SAMPLE WEEK Æ 06-04-06 06-11-06 06-18-06 06-25-06 07-02-06 07-09-06 07-16-06 07-23-07 07-30-06 08-06-06 08-13-06 

Alosa chrysochloris 0.0 2.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ameiurus melas 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ameiurus natalis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Anchoa mitchilli 12.0 2.0 3.0 4.0 0.0 4.0 8.0 4.5 1.0 2.0 3.0 Anguilla rostrata 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Aphredoderus sayanus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Applodinotus grunniens 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ariopsis felis 0.0 2.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Bagre marinus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Bathygobius soporator 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Brevoortia patronus 13.0 24.0 6.0 0.0 1.0 1.5 2.0 1.0 0.0 0.0 0.0 

Callinectes sapidus 27.0 19.0 25.0 13.0 109.0 73.5 38.0 31.5 25.0 40.5 56.0 

Cambaridae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Citharichthys spilopterus 0.0 0.0 0.0 2.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Ctenogobius shufeldti 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Cynoscion arenarius 4.0 1.0 8.0 2.0 2.0 6.0 10.0 5.0 0.0 0.0 0.0 

Decapoda 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Dormitator maculatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Dorosoma cepedianum 2.0 0.0 2.0 19.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Dorosoma petenense 0.0 1.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Elops saurus 0.0 1.0 0.0 0.0 0.0 0.5 1.0 0.5 0.0 0.0 0.0 

Farfantepenaeus aztecus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.5 1.0 0.5 0.0 

Gambusia affinis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Gobiidae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Gobioides broussonetii 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

gobionellus oceanicus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Gobiosoma bosc 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Ictalurus furcatus 2.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Ictalurus punctatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Ictiobus cyprinellus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Lepomis gulosus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Lepomis macrochirus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Lepomis megalotis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Lepomis symmetricus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Lucania parva 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Lutjanus griseus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Macrobrachium ohione 0.0 0.0 0.0 0.0 0.0 1.5 3.0 2.0 1.0 3.0 5.0 Membras martinica 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Menidia beryllina 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Micropogonias undulatus 941.0 576.0 291.0 697.0 109.0 379.0 649.0 325.0 1.0 1.5 2.0 

Morone saxatilis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Mugil cephalus 2.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Orconectes hobbsi 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Orconectes spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 
Table B-22: Total weekly impingement (adult) densities (number per 8-hour sample block) as sampled during the DAY sample 

SHADED columns were derived by averaging from adjacent weeks. 

N:\CLIENT\CLECO\Teche\IM&E Characterization\Characterization Report\Appendix\Appendix B-Final 1 IME Report.doc 

SAMPLE WEEK Æ 06-04-06 06-11-06 06-18-06 06-25-06 07-02-06 07-09-06 07-16-06 07-23-07 07-30-06 08-06-06 08-13-06 

Paralichthys lethostigma 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.5 1.0 1.0 1.0 Polyodon spathula 1.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Pomoxis annularis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Prionotus tribulus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Pylodictis olivaris 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Rhithropanopeus harrisii 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Sciaenops ocellatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Sesarma cinereum 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Syngnathus scovelli 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Trinectes maculatus 1.0 1.0 1.0 2.0 0.0 0.0 0.0 1.0 2.0 1.0 0.0 Uca rapax 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Uca subcylindrica 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Unid. Shrimp remains 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Veticambarus sp. 1.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

TOTAL 1006.0 629.0 336.0 739.0 221.0 466.0 711.0 371.5 32.0 49.5 67.0 

SAMPLE WEEK Æ 09-03-06 09-10-06 09-17-06 09-24-06 10-01-06 10-08-06 10-15-06 10-22-06 10-29-06 11-05-06 11-12-06 

Alosa chrysochloris 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ameiurus melas 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ameiurus natalis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Anchoa mitchilli 0.0 24.0 18.0 12.0 12.0 46.0 8.0 357.0 227.0 10.0 12.0 

Anguilla rostrata 0.0 0.0 0.0 0.0 0.0 1.0 0.0 0.0 0.0 0.0 0.0 

Aphredoderus sayanus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Applodinotus grunniens 0.0 0.0 1.0 1.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ariopsis felis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 1.0 0.0 1.0 Bagre marinus 0.0 0.0 0.0 0.0 0.0 0.0 1.0 0.0 0.0 0.0 0.0 Bathygobius soporator 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Brevoortia patronus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Callinectes sapidus 9.0 181.0 32.0 34.0 0.0 28.0 28.0 19.0 45.0 44.0 39.0 Cambaridae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Citharichthys spilopterus 0.0 3.0 2.0 0.0 8.0 1.0 0.0 0.0 2.0 1.0 0.0 Ctenogobius shufeldti 0.0 0.0 0.0 0.0 0.0 1.0 0.0 0.0 0.0 0.0 0.0 Cynoscion arenarius 2.0 76.0 15.0 5.0 1.0 14.0 3.0 3.0 0.0 2.0 1.0 Decapoda 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Dormitator maculatus 0.0 0.0 0.0 1.0 0.0 0.0 1.0 0.0 0.0 0.0 0.0 Dorosoma cepedianum 1.0 2.0 0.0 0.0 0.0 0.0 1.0 0.0 0.0 0.0 0.0 Dorosoma petenense 0.0 62.0 1.0 3.0 0.0 0.0 0.0 3.0 4.0 1.0 0.0 Elops saurus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 1.0 0.0 Farfantepenaeus aztecus 0.0 500.0 70.0 83.0 9.0 0.0 28.0 295.0 115.0 16.0 2.0 Gambusia affinis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Gobiidae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Gobioides broussonetii 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 
Table B-22: Total weekly impingement (adult) densities (number per 8-hour sample block) as sampled during the DAY sample 

SHADED columns were derived by averaging from adjacent weeks. 

N:\CLIENT\CLECO\Teche\IM&E Characterization\Characterization Report\Appendix\Appendix B-Final 1 IME Report.doc 

SAMPLE WEEK Æ 09-03-06 09-10-06 09-17-06 09-24-06 10-01-06 10-08-06 10-15-06 10-22-06 10-29-06 11-05-06 11-12-06 

gobionellus oceanicus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Gobiosoma bosc 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ictalurus furcatus 0.0 6.0 1.0 0.0 0.0 0.0 0.0 0.0 0.0 2.0 0.0 Ictalurus punctatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 2.0 0.0 0.0 0.0 Ictiobus cyprinellus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Lepomis gulosus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Lepomis macrochirus 0.0 0.0 0.0 2.0 0.0 0.0 0.0 0.0 1.0 0.0 0.0 Lepomis megalotis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Lepomis symmetricus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Lucania parva 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Lutjanus griseus 0.0 0.0 0.0 0.0 0.0 0.0 2.0 0.0 0.0 0.0 0.0 Macrobrachium ohione 2.0 50.0 10.0 2.0 3.0 117.0 6.0 5.0 12.0 25.0 37.0 Membras martinica 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Menidia beryllina 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Micropogonias undulatus 0.0 2.0 0.0 0.0 0.0 0.0 1.0 0.0 0.0 0.0 0.0 Morone saxatilis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Mugil cephalus 0.0 1.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Orconectes hobbsi 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Orconectes spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Paralichthys lethostigma 0.0 1.0 0.0 0.0 0.0 0.0 0.0 0.0 1.0 0.0 1.0 Polyodon spathula 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 1.0 0.0 Pomoxis annularis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Prionotus tribulus 0.0 0.0 0.0 0.0 0.0 0.0 1.0 0.0 0.0 0.0 0.0 Pylodictis olivaris 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Rhithropanopeus harrisii 0.0 0.0 0.0 0.0 0.0 1.0 0.0 0.0 0.0 0.0 0.0 Sciaenops ocellatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Sesarma cinereum 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Syngnathus scovelli 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Trinectes maculatus 5.0 46.0 46.0 9.0 2.0 2.0 6.0 6.0 39.0 14.0 3.0 Uca rapax 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Uca subcylindrica 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Unid. Shrimp remains 0.0 941.0 280.0 85.0 13.0 0.0 10.0 9.0 1.0 3.0 0.0 Veticambarus sp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 TOTAL 19.0 1895.0 476.0 237.0 48.0 211.0 96.0 699.0 448.0 120.0 96.0 

SAMPLE WEEK Æ 12-03-06 12-10-06 12-17-06 12-24-06 12-31-06 01-07-07 01-14-07 01-24-07 01-28-07 02-04-07 

Alosa chrysochloris 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ameiurus melas 0.0 0.0 0.0 0.5 1.0 0.5 0.0 0.0 0.0 0.0 

Ameiurus natalis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Anchoa mitchilli 69.0 35.5 2.0 1.0 0.0 0.0 0.0 4.0 8.0 9.0 

Anguilla rostrata 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Aphredoderus sayanus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Applodinotus grunniens 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 
Table B-22: Total weekly impingement (adult) densities (number per 8-hour sample block) as sampled during the DAY sample 

SHADED columns were derived by averaging from adjacent weeks. 

N:\CLIENT\CLECO\Teche\IM&E Characterization\Characterization Report\Appendix\Appendix B-Final 1 IME Report.doc 

SAMPLE WEEK Æ 12-03-06 12-10-06 12-17-06 12-24-06 12-31-06 01-07-07 01-14-07 01-24-07 01-28-07 02-04-07 

Ariopsis felis 6.0 3.5 1.0 0.5 0.0 0.0 0.0 0.0 0.0 0.0 Bagre marinus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Bathygobius soporator 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Brevoortia patronus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Callinectes sapidus 13.0 10.0 7.0 13.5 20.0 12.5 5.0 6.0 7.0 0.0 

Cambaridae 0.0 0.5 1.0 0.5 0.0 0.0 0.0 0.0 0.0 0.0 

Citharichthys spilopterus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Ctenogobius shufeldti 0.0 0.0 0.0 0.0 0.0 0.0 0.0 1.0 2.0 0.0 

Cynoscion arenarius 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Decapoda 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Dormitator maculatus 2.0 1.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Dorosoma cepedianum 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Dorosoma petenense 2.0 1.0 0.0 0.0 0.0 0.5 1.0 0.5 0.0 0.0 

Elops saurus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Farfantepenaeus aztecus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Gambusia affinis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Gobiidae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Gobioides broussonetii 0.0 0.0 0.0 0.0 0.0 0.0 0.0 1.0 2.0 2.0 

gobionellus oceanicus 1.0 0.5 0.0 0.0 0.0 0.0 0.0 1.0 2.0 1.0 

Gobiosoma bosc 0.0 1.0 2.0 1.0 0.0 0.0 0.0 0.0 0.0 0.0 

Ictalurus furcatus 2.0 2.5 3.0 3.0 3.0 3.0 3.0 2.0 1.0 0.0 

Ictalurus punctatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Ictiobus cyprinellus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Lepomis gulosus 0.0 0.0 0.0 0.0 0.0 0.5 1.0 0.5 0.0 0.0 

Lepomis macrochirus 0.0 0.0 0.0 1.0 2.0 2.5 3.0 2.0 1.0 0.0 

Lepomis megalotis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Lepomis symmetricus 0.0 0.0 0.0 1.0 2.0 1.0 0.0 0.0 0.0 0.0 

Lucania parva 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Lutjanus griseus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Macrobrachium ohione 86.0 77.5 69.0 59.0 49.0 30.0 11.0 20.5 30.0 22.0 

Membras martinica 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Menidia beryllina 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Micropogonias undulatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Morone saxatilis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Mugil cephalus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Orconectes hobbsi 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Orconectes spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Paralichthys lethostigma 2.0 1.0 0.0 1.0 2.0 1.5 1.0 0.5 0.0 0.0 

Polyodon spathula 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Pomoxis annularis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Prionotus tribulus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Pylodictis olivaris 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Rhithropanopeus harrisii 1.0 0.5 0.0 5.5 11.0 6.5 2.0 2.0 2.0 0.0 

Sciaenops ocellatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Sesarma cinereum 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Syngnathus scovelli 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 1.0 
Table B-22: Total weekly impingement (adult) densities (number per 8-hour sample block) as sampled during the DAY sample 

SHADED columns were derived by averaging from adjacent weeks. 

N:\CLIENT\CLECO\Teche\IM&E Characterization\Characterization Report\Appendix\Appendix B-Final 1 IME Report.doc 

SAMPLE WEEK Æ 12-03-06 12-10-06 12-17-06 12-24-06 12-31-06 01-07-07 01-14-07 01-24-07 01-28-07 02-04-07 

Trinectes maculatus 29.0 16.0 3.0 19.5 36.0 34.0 32.0 18.0 4.0 0.0 Uca rapax 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Uca subcylindrica 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Unid. Shrimp remains 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Veticambarus sp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

TOTAL 213.0 150.5 88.0 107.0 126.0 92.5 59.0 59.0 59.0 35.0 

SAMPLE WEEK Æ 03-04-07 03-11-07 03-18-07 03-25-07 04-01-07 04-08-07 04-15-07 04-22-07 04-29-07 05-06-07 05-1

Alosa chrysochloris 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ameiurus melas 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ameiurus natalis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Anchoa mitchilli 2.0 1.0 0.5 0.5 0.0 18.0 4.0 8.0 0.0 5.0 1Anguilla rostrata 0.0 0.0 0.0 0.0 0.0 1.0 0.0 0.0 0.0 0.0 Aphredoderus sayanus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Applodinotus grunniens 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ariopsis felis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Bagre marinus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Bathygobius soporator 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Brevoortia patronus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 5.0 0.0 11Callinectes sapidus 1.0 2.0 1.5 1.5 1.0 7.0 1.0 5.0 8.0 11.0 6Cambaridae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Citharichthys spilopterus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ctenogobius shufeldti 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Cynoscion arenarius 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 3.0 Decapoda 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Dormitator maculatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Dorosoma cepedianum 0.0 1.0 0.5 0.5 0.0 0.0 1.0 0.0 0.0 0.0 Dorosoma petenense 1.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Elops saurus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Farfantepenaeus aztecus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Gambusia affinis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Gobiidae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Gobioides broussonetii 1.0 0.0 0.0 0.0 0.0 0.0 7.0 0.0 0.0 0.0 gobionellus oceanicus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Gobiosoma bosc 0.0 1.0 0.5 0.5 0.0 0.0 0.0 0.0 0.0 0.0 Ictalurus furcatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ictalurus punctatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 1.0 1.0 Ictiobus cyprinellus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Lepomis gulosus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Lepomis macrochirus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Lepomis megalotis 0.0 1.0 0.5 0.5 0.0 0.0 0.0 0.0 0.0 0.0 Lepomis symmetricus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Lucania parva 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Lutjanus griseus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Macrobrachium ohione 42.0 89.0 44.5 44.5 0.0 12.0 0.0 3.0 0.0 0.0 9Membras martinica 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 1.0 
Table B-22: Total weekly impingement (adult) densities (number per 8-hour sample block) as sampled during the DAY sample 

SHADED columns were derived by averaging from adjacent weeks. 

N:\CLIENT\CLECO\Teche\IM&E Characterization\Characterization Report\Appendix\Appendix B-Final 1 IME Report.doc 

SAMPLE WEEK Æ 03-04-07 03-11-07 03-18-07 03-25-07 04-01-07 04-08-07 04-15-07 04-22-07 04-29-07 05-06-07 05-1

Menidia beryllina 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Micropogonias undulatus 8.0 1.0 0.5 0.5 0.0 1.0 1.0 2.0 4.0 3.0 28Morone saxatilis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Mugil cephalus 1.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Orconectes hobbsi 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Orconectes spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Paralichthys lethostigma 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Polyodon spathula 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 1.0 0.0 Pomoxis annularis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Prionotus tribulus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Pylodictis olivaris 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Rhithropanopeus harrisii 0.0 0.0 0.0 0.0 0.0 0.0 0.0 1.0 0.0 0.0 Sciaenops ocellatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Sesarma cinereum 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Syngnathus scovelli 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Trinectes maculatus 1.0 0.0 0.0 0.0 0.0 0.0 1.0 0.0 2.0 2.0 Uca rapax 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Uca subcylindrica 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Unid. Shrimp remains 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Veticambarus sp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 TOTAL 57.0 96.0 48.5 48.5 1.0 39.0 15.0 19.0 21.0 26.0 58
Table B-23: Estimated total weekly impingement (adult) based on design flow data during the DAY sample block (Estimates ba

flow). Data in SHADED columns were derived by averaging from adjacent weeks. 

N:\CLIENT\CLECO\Teche\IM&E Characterization\Characterization Report\Appendix\Appendix B-Final 1 IME Report.doc 

SAMPLE WEEK 

Æ 06-04-06 06-11-06 06-18-06 06-25-06 07-02-06 07-09-06 07-16-06 07-23-07 07-30-06 08-06-06 0

Alosa chrysochloris 0.0 36.8 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ameiurus melas 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Ameiurus natalis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Anchoa mitchilli 220.7 36.8 27.6 36.8 0.0 36.8 73.6 41.4 9.2 18.4 

Anguilla rostrata 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Aphredoderus sayanus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Applodinotus grunniens 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Ariopsis felis 0.0 36.8 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Bagre marinus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Bathygobius soporator 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Brevoortia patronus 239.0 441.3 55.2 0.0 9.2 13.8 18.4 9.2 0.0 0.0 

Callinectes sapidus 496.5 349.4 229.9 119.5 1,002.1 675.8 349.4 289.6 229.9 372.4 Cambaridae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Citharichthys spilopterus 0.0 0.0 0.0 18.4 0.0 0.0 0.0 0.0 0.0 0.0 

Ctenogobius shufeldti 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Cynoscion arenarius 73.6 18.4 73.6 18.4 18.4 55.2 91.9 46.0 0.0 0.0 

Decapoda 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Dormitator maculatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Dorosoma cepedianum 36.8 0.0 18.4 174.7 0.0 0.0 0.0 0.0 0.0 0.0 

Dorosoma petenense 0.0 18.4 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Elops saurus 0.0 18.4 0.0 0.0 0.0 4.6 9.2 4.6 0.0 0.0 

Farfantepenaeus aztecus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 4.6 9.2 4.6 

Gambusia affinis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Gobiidae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Gobioides broussonetii 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

gobionellus oceanicus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Gobiosoma bosc 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Ictalurus furcatus 36.8 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Ictalurus punctatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Ictiobus cyprinellus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Lepomis gulosus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Lepomis macrochirus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Lepomis megalotis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Lepomis symmetricus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Lucania parva 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Lutjanus griseus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Macrobrachium ohione 0.0 0.0 0.0 0.0 0.0 13.8 27.6 18.4 9.2 27.6 

Membras martinica 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Menidia beryllina 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Micropogonias undulatus 17,303.2 10,591.5 2,675.5 6,408.2 1,002.1 3,484.5 5,966.9 2,988.1 9.2 13.8 

Morone saxatilis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Mugil cephalus 36.8 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Orconectes hobbsi 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Orconectes spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 
Table B-23: Estimated total weekly impingement (adult) based on design flow data during the DAY sample block (Estimates ba

flow). Data in SHADED columns were derived by averaging from adjacent weeks. 

N:\CLIENT\CLECO\Teche\IM&E Characterization\Characterization Report\Appendix\Appendix B-Final 1 IME Report.doc 

SAMPLE WEEK 

Æ 06-04-06 06-11-06 06-18-06 06-25-06 07-02-06 07-09-06 07-16-06 07-23-07 07-30-06 08-06-06 0

Paralichthys lethostigma 0.0 0.0 0.0 0.0 0.0 0.0 0.0 4.6 9.2 9.2 Polyodon spathula 18.4 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Pomoxis annularis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Prionotus tribulus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Pylodictis olivaris 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Rhithropanopeus harrisii 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Sciaenops ocellatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Sesarma cinereum 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Syngnathus scovelli 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Trinectes maculatus 18.4 18.4 9.2 18.4 0.0 0.0 0.0 9.2 18.4 9.2 

Uca rapax 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Uca subcylindrica 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Unid. Shrimp remains 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Veticambarus sp. 18.4 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

TOTAL 18,498.4 11,566.1 3,089.2 6,794.4 2,031.9 4,284.4 6,537.0 3,415.6 294.2 455.1 

SAMPLE WEEK 

Æ 09-03-06 09-10-06 09-17-06 09-24-06 10-01-06 10-08-06 10-15-06 10-22-06 10-29-06 11-05-06 11-12

Alosa chrysochloris 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ameiurus melas 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ameiurus natalis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Anchoa mitchilli 0.0 220.7 331.0 220.7 220.7 845.9 147.1 6,564.5 4,174.1 183.9 22

Anguilla rostrata 0.0 0.0 0.0 0.0 0.0 18.4 0.0 0.0 0.0 0.0 

Aphredoderus sayanus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Applodinotus grunniens 0.0 0.0 18.4 18.4 0.0 0.0 0.0 0.0 0.0 0.0 Ariopsis felis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 18.4 0.0 1Bagre marinus 0.0 0.0 0.0 0.0 0.0 0.0 18.4 0.0 0.0 0.0 Bathygobius soporator 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Brevoortia patronus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Callinectes sapidus 165.5 1,664.1 588.4 625.2 0.0 514.9 514.9 349.4 827.5 809.1 71Cambaridae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Citharichthys spilopterus 0.0 27.6 36.8 0.0 147.1 18.4 0.0 0.0 36.8 18.4 Ctenogobius shufeldti 0.0 0.0 0.0 0.0 0.0 18.4 0.0 0.0 0.0 0.0 Cynoscion arenarius 36.8 698.7 275.8 91.9 18.4 257.4 55.2 55.2 0.0 36.8 1Decapoda 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Dormitator maculatus 0.0 0.0 0.0 18.4 0.0 0.0 18.4 0.0 0.0 0.0 Dorosoma cepedianum 18.4 18.4 0.0 0.0 0.0 0.0 18.4 0.0 0.0 0.0 Dorosoma petenense 0.0 570.0 18.4 55.2 0.0 0.0 0.0 55.2 73.6 18.4 Elops saurus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 18.4 Farfantepenaeus aztecus 0.0 4,597.0 1,287.2 1,526.2 165.5 0.0 514.9 5,424.5 2,114.6 294.2 3Gambusia affinis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Gobiidae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Gobioides broussonetii 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 
Table B-23: Estimated total weekly impingement (adult) based on design flow data during the DAY sample block (Estimates ba

flow). Data in SHADED columns were derived by averaging from adjacent weeks. 

N:\CLIENT\CLECO\Teche\IM&E Characterization\Characterization Report\Appendix\Appendix B-Final 1 IME Report.doc 

SAMPLE WEEK 

Æ 09-03-06 09-10-06 09-17-06 09-24-06 10-01-06 10-08-06 10-15-06 10-22-06 10-29-06 11-05-06 11-12

gobionellus oceanicus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Gobiosoma bosc 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ictalurus furcatus 0.0 55.2 18.4 0.0 0.0 0.0 0.0 0.0 0.0 36.8 Ictalurus punctatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 36.8 0.0 0.0 Ictiobus cyprinellus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Lepomis gulosus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Lepomis macrochirus 0.0 0.0 0.0 36.8 0.0 0.0 0.0 0.0 18.4 0.0 Lepomis megalotis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Lepomis symmetricus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Lucania parva 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Lutjanus griseus 0.0 0.0 0.0 0.0 0.0 0.0 36.8 0.0 0.0 0.0 Macrobrachium ohione 36.8 459.7 183.9 36.8 55.2 2,151.4 110.3 91.9 220.7 459.7 68Membras martinica 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Menidia beryllina 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Micropogonias undulatus 0.0 18.4 0.0 0.0 0.0 0.0 18.4 0.0 0.0 0.0 Morone saxatilis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Mugil cephalus 0.0 9.2 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Orconectes hobbsi 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Orconectes spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Paralichthys lethostigma 0.0 9.2 0.0 0.0 0.0 0.0 0.0 0.0 18.4 0.0 1Polyodon spathula 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 18.4 Pomoxis annularis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Prionotus tribulus 0.0 0.0 0.0 0.0 0.0 0.0 18.4 0.0 0.0 0.0 Pylodictis olivaris 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Rhithropanopeus harrisii 0.0 0.0 0.0 0.0 0.0 18.4 0.0 0.0 0.0 0.0 Sciaenops ocellatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Sesarma cinereum 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Syngnathus scovelli 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Trinectes maculatus 91.9 422.9 845.9 165.5 36.8 36.8 110.3 110.3 717.1 257.4 5Uca rapax 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Uca subcylindrica 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Unid. Shrimp remains 0.0 8,651.6 5,148.7 1,563.0 239.0 0.0 183.9 165.5 18.4 55.2 Veticambarus sp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 TOTAL 349.4 17,422.7 8,752.7 4,358.0 882.6 3,879.9 1,765.3 12,853.3 8,237.9 2,206.6 1,76

SAMPLE WEEK 

Æ 12-03-06 12-10-06 12-17-06 12-24-06 12-31-06 01-07-07 01-14-07 01-24-07 01-28-07 02-04-07 

Alosa chrysochloris 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ameiurus melas 0.0 0.0 0.0 9.2 18.4 9.2 0.0 0.0 0.0 0.0 

Ameiurus natalis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Anchoa mitchilli 1,268.8 652.8 36.8 18.4 0.0 0.0 0.0 73.6 147.1 165.5 

Anguilla rostrata 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Aphredoderus sayanus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Applodinotus grunniens 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 
Table B-23: Estimated total weekly impingement (adult) based on design flow data during the DAY sample block (Estimates ba

flow). Data in SHADED columns were derived by averaging from adjacent weeks. 

N:\CLIENT\CLECO\Teche\IM&E Characterization\Characterization Report\Appendix\Appendix B-Final 1 IME Report.doc 

SAMPLE WEEK 

Æ 12-03-06 12-10-06 12-17-06 12-24-06 12-31-06 01-07-07 01-14-07 01-24-07 01-28-07 02-04-07 

Ariopsis felis 110.3 64.4 18.4 9.2 0.0 0.0 0.0 0.0 0.0 0.0 Bagre marinus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Bathygobius soporator 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Brevoortia patronus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Callinectes sapidus 239.0 183.9 128.7 248.2 367.8 229.9 91.9 110.3 128.7 0.0 

Cambaridae 0.0 9.2 18.4 9.2 0.0 0.0 0.0 0.0 0.0 0.0 Citharichthys spilopterus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Ctenogobius shufeldti 0.0 0.0 0.0 0.0 0.0 0.0 0.0 18.4 36.8 0.0 Cynoscion arenarius 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Decapoda 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Dormitator maculatus 36.8 18.4 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Dorosoma cepedianum 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Dorosoma petenense 36.8 18.4 0.0 0.0 0.0 9.2 18.4 9.2 0.0 0.0 

Elops saurus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Farfantepenaeus aztecus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Gambusia affinis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Gobiidae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Gobioides broussonetii 0.0 0.0 0.0 0.0 0.0 0.0 0.0 18.4 36.8 36.8 

gobionellus oceanicus 18.4 9.2 0.0 0.0 0.0 0.0 0.0 18.4 36.8 18.4 

Gobiosoma bosc 0.0 18.4 36.8 18.4 0.0 0.0 0.0 0.0 0.0 0.0 

Ictalurus furcatus 36.8 46.0 55.2 55.2 55.2 55.2 55.2 36.8 18.4 0.0 

Ictalurus punctatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Ictiobus cyprinellus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Lepomis gulosus 0.0 0.0 0.0 0.0 0.0 9.2 18.4 9.2 0.0 0.0 Lepomis macrochirus 0.0 0.0 0.0 18.4 36.8 46.0 55.2 36.8 18.4 0.0 

Lepomis megalotis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Lepomis symmetricus 0.0 0.0 0.0 18.4 36.8 18.4 0.0 0.0 0.0 0.0 

Lucania parva 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Lutjanus griseus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Macrobrachium ohione 1,581.4 1,425.1 1,268.8 1,084.9 901.0 551.6 202.3 377.0 551.6 404.5 

Membras martinica 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Menidia beryllina 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Micropogonias undulatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Morone saxatilis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Mugil cephalus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Orconectes hobbsi 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Orconectes spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Paralichthys lethostigma 36.8 18.4 0.0 18.4 36.8 27.6 18.4 9.2 0.0 0.0 

Polyodon spathula 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Pomoxis annularis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Prionotus tribulus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Pylodictis olivaris 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Rhithropanopeus harrisii 18.4 9.2 0.0 101.1 202.3 119.5 36.8 36.8 36.8 0.0 

Sciaenops ocellatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Sesarma cinereum 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Syngnathus scovelli 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 18.4 
Table B-23: Estimated total weekly impingement (adult) based on design flow data during the DAY sample block (Estimates ba

flow). Data in SHADED columns were derived by averaging from adjacent weeks. 

N:\CLIENT\CLECO\Teche\IM&E Characterization\Characterization Report\Appendix\Appendix B-Final 1 IME Report.doc 

SAMPLE WEEK 

Æ 12-03-06 12-10-06 12-17-06 12-24-06 12-31-06 01-07-07 01-14-07 01-24-07 01-28-07 02-04-07 

Trinectes maculatus 533.3 294.2 55.2 358.6 662.0 625.2 588.4 331.0 73.6 0.0 Uca rapax 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Uca subcylindrica 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Unid. Shrimp remains 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Veticambarus sp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

TOTAL 3,916.7 2,767.4 1,618.1 1,967.5 2,316.9 1,700.9 1,084.9 1,084.9 1,084.9 643.6 

SAMPLE WEEK 

Æ 03-04-07 03-11-07 03-18-07 03-25-07 04-01-07 04-08-07 04-15-07 04-22-07 04-29-07 05-06-07 05-1

Alosa chrysochloris 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ameiurus melas 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ameiurus natalis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Anchoa mitchilli 36.8 18.4 9.2 9.2 0.0 331.0 73.6 147.1 0.0 91.9 20Anguilla rostrata 0.0 0.0 0.0 0.0 0.0 18.4 0.0 0.0 0.0 0.0 Aphredoderus sayanus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Applodinotus grunniens 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ariopsis felis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Bagre marinus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Bathygobius soporator 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Brevoortia patronus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 91.9 0.0 2,11Callinectes sapidus 18.4 36.8 27.6 27.6 18.4 128.7 18.4 91.9 147.1 202.3 1,25Cambaridae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Citharichthys spilopterus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ctenogobius shufeldti 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Cynoscion arenarius 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 55.2 12Decapoda 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Dormitator maculatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Dorosoma cepedianum 0.0 18.4 9.2 9.2 0.0 0.0 18.4 0.0 0.0 0.0 Dorosoma petenense 18.4 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 9Elops saurus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Farfantepenaeus aztecus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Gambusia affinis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Gobiidae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Gobioides broussonetii 18.4 0.0 0.0 0.0 0.0 0.0 128.7 0.0 0.0 0.0 1gobionellus oceanicus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Gobiosoma bosc 0.0 18.4 9.2 9.2 0.0 0.0 0.0 0.0 0.0 0.0 Ictalurus furcatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ictalurus punctatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 18.4 18.4 1Ictiobus cyprinellus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 1Lepomis gulosus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Lepomis macrochirus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Lepomis megalotis 0.0 18.4 9.2 9.2 0.0 0.0 0.0 0.0 0.0 0.0 Lepomis symmetricus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Lucania parva 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Lutjanus griseus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Macrobrachium ohione 772.3 1,636.5 818.3 818.3 0.0 220.7 0.0 55.2 0.0 0.0 1,71Membras martinica 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 18.4 
Table B-23: Estimated total weekly impingement (adult) based on design flow data during the DAY sample block (Estimates ba

flow). Data in SHADED columns were derived by averaging from adjacent weeks. 

N:\CLIENT\CLECO\Teche\IM&E Characterization\Characterization Report\Appendix\Appendix B-Final 1 IME Report.doc 

SAMPLE WEEK 

Æ 03-04-07 03-11-07 03-18-07 03-25-07 04-01-07 04-08-07 04-15-07 04-22-07 04-29-07 05-06-07 05-1

Menidia beryllina 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Micropogonias undulatus 147.1 18.4 9.2 9.2 0.0 18.4 18.4 36.8 73.6 55.2 5,16Morone saxatilis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Mugil cephalus 18.4 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Orconectes hobbsi 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Orconectes spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Paralichthys lethostigma 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Polyodon spathula 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 18.4 0.0 Pomoxis annularis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Prionotus tribulus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Pylodictis olivaris 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Rhithropanopeus harrisii 0.0 0.0 0.0 0.0 0.0 0.0 0.0 18.4 0.0 0.0 Sciaenops ocellatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Sesarma cinereum 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Syngnathus scovelli 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Trinectes maculatus 18.4 0.0 0.0 0.0 0.0 0.0 18.4 0.0 36.8 36.8 11Uca rapax 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Uca subcylindrica 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Unid. Shrimp remains 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Veticambarus sp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 TOTAL 1,048.1 1,765.3 891.8 891.8 18.4 717.1 275.8 349.4 386.1 478.1 10,83
Table B-24: Estimated total weekly impingement (adult) based on actual flow data during the DAY sample block. Data in SHA

derived by averaging from adjacent weeks. N:\CLIENT\CLECO\Teche\IM&E Characterization\Characterization Report\Appendix\Appendix B-Final 1 IME Report.doc 

Table B-24 

SAMPLE WEEK Æ 06-04-06 06-11-06 06-18-06 06-25-06 07-02-06 07-09-06 07-16-06 07-23-07 07-30-06 08-06-06 

Alosa chrysochloris 0.0 24.3 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ameiurus melas 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ameiurus natalis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Anchoa mitchilli 134.6 24.3 21.0 28.0 0.0 28.0 56.0 31.3 6.6 12.8 

Anguilla rostrata 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Aphredoderus sayanus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Applodinotus grunniens 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Ariopsis felis 0.0 24.3 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Bagre marinus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Bathygobius soporator 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Brevoortia patronus 145.8 292.2 42.0 0.0 7.0 10.5 14.0 7.0 0.0 0.0 

Callinectes sapidus 302.8 231.3 175.1 91.1 763.7 514.9 266.0 215.9 165.8 260.5 

Cambaridae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Citharichthys spilopterus 0.0 0.0 0.0 14.0 0.0 0.0 0.0 0.0 0.0 0.0 Ctenogobius shufeldti 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Cynoscion arenarius 44.9 12.2 56.0 14.0 14.0 42.0 70.0 35.0 0.0 0.0 Decapoda 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Dormitator maculatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Dorosoma cepedianum 22.4 0.0 14.0 133.1 0.0 0.0 0.0 0.0 0.0 0.0 

Dorosoma petenense 0.0 12.2 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Elops saurus 0.0 12.2 0.0 0.0 0.0 3.5 7.0 3.5 0.0 0.0 

Farfantepenaeus aztecus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 3.3 6.6 3.3 Gambusia affinis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Gobiidae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Gobioides broussonetii 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

gobionellus oceanicus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Gobiosoma bosc 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Ictalurus furcatus 22.4 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Ictalurus punctatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Ictiobus cyprinellus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Lepomis gulosus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Lepomis macrochirus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Lepomis megalotis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Lepomis symmetricus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Lucania parva 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Lutjanus griseus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Macrobrachium ohione 0.0 0.0 0.0 0.0 0.0 10.5 21.0 13.8 6.6 19.2 

Membras martinica 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Menidia beryllina 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Micropogonias undulatus 10554.7 7012.7 2038.2 4884.1 763.7 2653.4 4543.0 2274.8 6.6 9.7 Morone saxatilis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Mugil cephalus 22.4 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Orconectes hobbsi 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Orconectes spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Paralichthys lethostigma 0.0 0.0 0.0 0.0 0.0 0.0 0.0 3.3 6.6 6.5 

Polyodon spathula 11.2 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Pomoxis annularis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Prionotus tribulus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Pylodictis olivaris 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Rhithropanopeus harrisii 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Sciaenops ocellatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 
Table B-24: Estimated total weekly impingement (adult) based on actual flow data during the DAY sample block. Data in SHA

derived by averaging from adjacent weeks. N:\CLIENT\CLECO\Teche\IM&E Characterization\Characterization Report\Appendix\Appendix B-Final 1 IME Report.doc 

Table B-24 

SAMPLE WEEK Æ 06-04-06 06-11-06 06-18-06 06-25-06 07-02-06 07-09-06 07-16-06 07-23-07 07-30-06 08-06-06 

Sesarma cinereum 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Syngnathus scovelli 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Trinectes maculatus 11.2 12.2 7.0 14.0 0.0 0.0 0.0 6.6 13.3 6.6 

Uca rapax 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Uca subcylindrica 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Unid. Shrimp remains 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Veticambarus sp. 11.2 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

TOTAL 11283.8 7658.0 2353.4 5178.4 1548.4 3262.7 4977.0 2594.6 212.3 318.6 

SAMPLE WEEK Æ 09-03-06 09-10-06 09-17-06 09-24-06 10-01-06 10-08-06 10-15-06 10-22-06 10-29-06 11-05-

Alosa chrysochloris 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0

Ameiurus melas 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0Ameiurus natalis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0Anchoa mitchilli 0.0 119.0 158.4 93.3 90.0 348.8 46.3 371.9 959.0 73Anguilla rostrata 0.0 0.0 0.0 0.0 0.0 7.6 0.0 0.0 0.0 0Aphredoderus sayanus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0Applodinotus grunniens 0.0 0.0 8.8 7.8 0.0 0.0 0.0 0.0 0.0 0Ariopsis felis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 4.2 0Bagre marinus 0.0 0.0 0.0 0.0 0.0 0.0 5.8 0.0 0.0 0Bathygobius soporator 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0Brevoortia patronus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0Callinectes sapidus 74.7 897.5 281.6 264.3 0.0 212.3 162.2 19.8 190.1 323Cambaridae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0Citharichthys spilopterus 0.0 14.9 17.6 0.0 60.0 7.6 0.0 0.0 8.4 7Ctenogobius shufeldti 0.0 0.0 0.0 0.0 0.0 7.6 0.0 0.0 0.0 0Cynoscion arenarius 16.6 376.8 132.0 38.9 7.5 106.2 17.4 3.1 0.0 14Decapoda 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0Dormitator maculatus 0.0 0.0 0.0 7.8 0.0 0.0 5.8 0.0 0.0 0Dorosoma cepedianum 8.3 9.9 0.0 0.0 0.0 0.0 5.8 0.0 0.0 0Dorosoma petenense 0.0 307.4 8.8 23.3 0.0 0.0 0.0 3.1 16.9 7Elops saurus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 7Farfantepenaeus aztecus 0.0 2479.2 616.0 645.1 67.5 0.0 162.2 307.3 485.8 117Gambusia affinis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0Gobiidae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0Gobioides broussonetii 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0gobionellus oceanicus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0Gobiosoma bosc 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0Ictalurus furcatus 0.0 29.8 8.8 0.0 0.0 0.0 0.0 0.0 0.0 14Ictalurus punctatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 2.1 0.0 0Ictiobus cyprinellus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0Lepomis gulosus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0Lepomis macrochirus 0.0 0.0 0.0 15.5 0.0 0.0 0.0 0.0 4.2 0Lepomis megalotis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0Lepomis symmetricus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0Lucania parva 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0
Table B-24: Estimated total weekly impingement (adult) based on actual flow data during the DAY sample block. Data in SHA

derived by averaging from adjacent weeks. N:\CLIENT\CLECO\Teche\IM&E Characterization\Characterization Report\Appendix\Appendix B-Final 1 IME Report.doc 

Table B-24 

SAMPLE WEEK Æ 09-03-06 09-10-06 09-17-06 09-24-06 10-01-06 10-08-06 10-15-06 10-22-06 10-29-06 11-05-

Lutjanus griseus 0.0 0.0 0.0 0.0 0.0 0.0 11.6 0.0 0.0 0

Macrobrachium ohione 16.6 247.9 88.0 15.5 22.5 887.3 34.8 5.2 50.7 183Membras martinica 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0Menidia beryllina 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0Micropogonias undulatus 0.0 9.9 0.0 0.0 0.0 0.0 5.8 0.0 0.0 0Morone saxatilis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0

Mugil cephalus 0.0 5.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0Orconectes hobbsi 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0Orconectes spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0Paralichthys lethostigma 0.0 5.0 0.0 0.0 0.0 0.0 0.0 0.0 4.2 0Polyodon spathula 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 7Pomoxis annularis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0Prionotus tribulus 0.0 0.0 0.0 0.0 0.0 0.0 5.8 0.0 0.0 0Pylodictis olivaris 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0Rhithropanopeus harrisii 0.0 0.0 0.0 0.0 0.0 7.6 0.0 0.0 0.0 0Sciaenops ocellatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0Sesarma cinereum 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0Syngnathus scovelli 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0Trinectes maculatus 41.5 228.1 404.8 70.0 15.0 15.2 34.8 6.3 164.8 102Uca rapax 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0Uca subcylindrica 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0Unid. Shrimp remains 0.0 4665.8 2463.9 660.7 97.5 0.0 57.9 9.4 4.2 22Veticambarus sp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0TOTAL 157.7 9396.0 4188.7 1842.2 360.0 1600.1 556.0 728.1 1892.6 882

SAMPLE WEEK Æ 12-03-06 12-10-06 12-17-06 12-24-06 12-31-06 01-07-07 01-14-07 01-24-07 01-28-07 02-04-07 

Alosa chrysochloris 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Ameiurus melas 0.0 0.0 0.0 3.5 7.0 3.5 0.0 0.0 0.0 0.0 

Ameiurus natalis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Anchoa mitchilli 485.9 250.1 14.3 7.1 0.0 0.0 0.0 28.2 56.3 63.4 

Anguilla rostrata 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Aphredoderus sayanus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Applodinotus grunniens 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Ariopsis felis 42.3 24.7 7.1 3.6 0.0 0.0 0.0 0.0 0.0 0.0 

Bagre marinus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Bathygobius soporator 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Brevoortia patronus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Callinectes sapidus 91.5 70.7 49.9 95.0 140.2 87.6 35.1 42.2 49.3 0.0 

Cambaridae 0.0 3.6 7.1 3.6 0.0 0.0 0.0 0.0 0.0 0.0 

Citharichthys spilopterus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Ctenogobius shufeldti 0.0 0.0 0.0 0.0 0.0 0.0 0.0 7.0 14.1 0.0 

Cynoscion arenarius 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Decapoda 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Dormitator maculatus 14.1 7.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 
Table B-24: Estimated total weekly impingement (adult) based on actual flow data during the DAY sample block. Data in SHA

derived by averaging from adjacent weeks. N:\CLIENT\CLECO\Teche\IM&E Characterization\Characterization Report\Appendix\Appendix B-Final 1 IME Report.doc 

Table B-24 

SAMPLE WEEK Æ 12-03-06 12-10-06 12-17-06 12-24-06 12-31-06 01-07-07 01-14-07 01-24-07 01-28-07 02-04-07 

Dorosoma cepedianum 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Dorosoma petenense 14.1 7.0 0.0 0.0 0.0 3.5 7.0 3.5 0.0 0.0 

Elops saurus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Farfantepenaeus aztecus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Gambusia affinis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Gobiidae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Gobioides broussonetii 0.0 0.0 0.0 0.0 0.0 0.0 0.0 7.0 14.1 14.1 

gobionellus oceanicus 7.0 3.5 0.0 0.0 0.0 0.0 0.0 7.0 14.1 7.0 

Gobiosoma bosc 0.0 7.1 14.3 7.1 0.0 0.0 0.0 0.0 0.0 0.0 

Ictalurus furcatus 14.1 17.7 21.4 21.2 21.0 21.0 21.0 14.0 7.0 0.0 

Ictalurus punctatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Ictiobus cyprinellus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Lepomis gulosus 0.0 0.0 0.0 0.0 0.0 3.5 7.0 3.5 0.0 0.0 

Lepomis macrochirus 0.0 0.0 0.0 7.0 14.0 17.5 21.0 14.0 7.0 0.0 

Lepomis megalotis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Lepomis symmetricus 0.0 0.0 0.0 7.0 14.0 7.0 0.0 0.0 0.0 0.0 

Lucania parva 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Lutjanus griseus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Macrobrachium ohione 605.6 548.9 492.2 417.8 343.4 210.3 77.2 144.2 211.3 155.1 

Membras martinica 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Menidia beryllina 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Micropogonias undulatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Morone saxatilis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Mugil cephalus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Orconectes hobbsi 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Orconectes spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Paralichthys lethostigma 14.1 7.0 0.0 7.0 14.0 10.5 7.0 3.5 0.0 0.0 

Polyodon spathula 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Pomoxis annularis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Prionotus tribulus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Pylodictis olivaris 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Rhithropanopeus harrisii 7.0 3.5 0.0 38.5 77.1 45.6 14.0 14.1 14.1 0.0 

Sciaenops ocellatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Sesarma cinereum 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Syngnathus scovelli 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 7.0 

Trinectes maculatus 204.2 112.8 21.4 136.8 252.3 238.4 224.5 126.3 28.2 0.0 

Uca rapax 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Uca subcylindrica 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Unid. Shrimp remains 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Veticambarus sp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

TOTAL 1499.9 1063.8 627.7 755.4 883.0 648.5 414.0 414.7 415.5 246.7 
Table B-24: Estimated total weekly impingement (adult) based on actual flow data during the DAY sample block. Data in SHA

derived by averaging from adjacent weeks. N:\CLIENT\CLECO\Teche\IM&E Characterization\Characterization Report\Appendix\Appendix B-Final 1 IME Report.doc 

Table B-24 

SAMPLE WEEK Æ 03-04-07 03-11-07 03-18-07 03-25-07 04-01-07 04-08-07 04-15-07 04-22-07 04-29-07 05-06-07 05-

Alosa chrysochloris 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ameiurus melas 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ameiurus natalis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Anchoa mitchilli 14.1 7.2 3.6 3.6 0.0 127.6 28.5 59.5 0.0 66.8 Anguilla rostrata 0.0 0.0 0.0 0.0 0.0 7.1 0.0 0.0 0.0 0.0 Aphredoderus sayanus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Applodinotus grunniens 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ariopsis felis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Bagre marinus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Bathygobius soporator 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Brevoortia patronus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 49.9 0.0 1Callinectes sapidus 7.1 14.4 10.8 10.8 7.1 49.6 7.1 37.2 79.9 146.9 Cambaridae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Citharichthys spilopterus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ctenogobius shufeldti 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Cynoscion arenarius 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 40.1 Decapoda 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Dormitator maculatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Dorosoma cepedianum 0.0 7.2 3.6 3.6 0.0 0.0 7.1 0.0 0.0 0.0 Dorosoma petenense 7.1 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Elops saurus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Farfantepenaeus aztecus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Gambusia affinis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Gobiidae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Gobioides broussonetii 7.1 0.0 0.0 0.0 0.0 0.0 49.9 0.0 0.0 0.0 gobionellus oceanicus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Gobiosoma bosc 0.0 7.2 3.6 3.6 0.0 0.0 0.0 0.0 0.0 0.0 Ictalurus furcatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ictalurus punctatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 10.0 13.4 Ictiobus cyprinellus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Lepomis gulosus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Lepomis macrochirus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Lepomis megalotis 0.0 7.2 3.6 3.6 0.0 0.0 0.0 0.0 0.0 0.0 Lepomis symmetricus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Lucania parva 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Lutjanus griseus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Macrobrachium ohione 296.3 642.3 321.1 321.1 0.0 85.1 0.0 22.3 0.0 0.0 1Membras martinica 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 13.4 Menidia beryllina 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Micropogonias undulatus 56.4 7.2 3.6 3.6 0.0 7.1 7.1 14.9 39.9 40.1 3Morone saxatilis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Mugil cephalus 7.1 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Orconectes hobbsi 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Orconectes spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Paralichthys lethostigma 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Polyodon spathula 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 10.0 0.0 Pomoxis annularis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Prionotus tribulus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Pylodictis olivaris 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 
Table B-24: Estimated total weekly impingement (adult) based on actual flow data during the DAY sample block. Data in SHA

derived by averaging from adjacent weeks. N:\CLIENT\CLECO\Teche\IM&E Characterization\Characterization Report\Appendix\Appendix B-Final 1 IME Report.doc 

Table B-24 

SAMPLE WEEK Æ 03-04-07 03-11-07 03-18-07 03-25-07 04-01-07 04-08-07 04-15-07 04-22-07 04-29-07 05-06-07 05-

Rhithropanopeus harrisii 0.0 0.0 0.0 0.0 0.0 0.0 0.0 7.4 0.0 0.0 Sciaenops ocellatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Sesarma cinereum 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Syngnathus scovelli 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Trinectes maculatus 7.1 0.0 0.0 0.0 0.0 0.0 7.1 0.0 20.0 26.7 Uca rapax 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Uca subcylindrica 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Unid. Shrimp remains 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Veticambarus sp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 TOTAL 402.1 692.8 349.9 349.9 7.1 276.5 107.0 141.2 209.7 347.2 7
Table B-25: Total weekly impingement (adult) densities (number per 8-hour sample block) as sampled during the NIGHT samp

SHADED columns were derived by averaging from adjacent weeks. 

N:\CLIENT\CLECO\Teche\IM&E Characterization\Characterization Report\Appendix\Appendix B-Final 1 IME Report.doc 

SAMPLE WEEK Æ 06-04-06 06-11-06 06-18-06 06-25-06 07-02-06 07-09-06 07-16-06 07-23-07 07-30-06 08-06-06 08-13-06 

Alosa chrysochloris 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.5 1.0 0.5 0.0 Ameiurus melas 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ameiurus natalis 0.0 1.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Anchoa mitchilli 11.0 16.0 32.0 4.0 6.0 450.5 895.0 451.0 7.0 8.0 9.0 Anguilla rostrata 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Aphredoderus sayanus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Applodinotus grunniens 0.0 0.0 1.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ariopsis felis 1.0 3.0 1.0 1.0 2.0 25.5 49.0 24.5 0.0 0.0 0.0 

Bagre marinus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Bathygobius soporator 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Brevoortia patronus 22.0 55.0 149.0 1.0 54.0 37.0 20.0 10.5 1.0 0.5 0.0 

Callinectes sapidus 298.0 88.0 101.0 48.0 103.0 162.5 222.0 162.0 102.0 108.0 114.0 Cambaridae 1.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Citharichthys spilopterus 38.0 65.0 309.0 43.0 59.0 76.0 93.0 46.5 0.0 0.5 1.0 

Ctenogobius shufeldti 0.0 0.0 0.0 0.0 0.0 0.5 1.0 0.5 0.0 0.0 0.0 

Cynoscion arenarius 3.0 16.0 36.0 11.0 59.0 34.0 9.0 5.0 1.0 1.0 1.0 

Decapoda 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Dormitator maculatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Dorosoma cepedianum 1.0 0.0 1.0 0.0 1.0 0.5 0.0 0.0 0.0 0.0 0.0 

Dorosoma petenense 1.0 0.0 0.0 0.0 0.0 0.5 1.0 1.0 1.0 0.5 0.0 

Elops saurus 0.0 0.0 3.0 2.0 3.0 1.5 0.0 0.0 0.0 0.0 0.0 

Farfantepenaeus aztecus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Gambusia affinis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Gobiidae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Gobioides broussonetii 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

gobionellus oceanicus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Gobiosoma bosc 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Ictalurus furcatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 2.0 4.0 

Ictalurus punctatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Ictiobus cyprinellus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Lepomis gulosus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Lepomis macrochirus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.5 1.0 

Lepomis megalotis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Lepomis symmetricus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Lucania parva 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Lutjanus griseus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Macrobrachium ohione 38.0 12.0 18.0 33.0 1.0 120.5 240.0 128.5 17.0 21.0 25.0 

Membras martinica 0.0 1.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Menidia beryllina 0.0 0.0 0.0 0.0 0.0 3.5 7.0 3.5 0.0 0.0 0.0 

Micropogonias undulatus 551.0 630.0 844.0 543.0 448.0 1895.0 3342.0 1672.5 3.0 3.5 4.0 

Morone saxatilis 0.0 0.0 0.0 0.0 0.0 0.5 1.0 0.5 0.0 0.0 0.0 

Mugil cephalus 1.0 1.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Orconectes hobbsi 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Orconectes spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 
Table B-25: Total weekly impingement (adult) densities (number per 8-hour sample block) as sampled during the NIGHT samp

SHADED columns were derived by averaging from adjacent weeks. 

N:\CLIENT\CLECO\Teche\IM&E Characterization\Characterization Report\Appendix\Appendix B-Final 1 IME Report.doc 

SAMPLE WEEK Æ 06-04-06 06-11-06 06-18-06 06-25-06 07-02-06 07-09-06 07-16-06 07-23-07 07-30-06 08-06-06 08-13-06 

Paralichthys lethostigma 0.0 1.0 8.0 0.0 4.0 4.5 5.0 3.5 2.0 1.5 1.0 Polyodon spathula 0.0 0.0 0.0 1.0 0.0 0.5 1.0 0.5 0.0 0.0 0.0 Pomoxis annularis 0.0 1.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Prionotus tribulus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Pylodictis olivaris 0.0 0.0 0.0 0.0 0.0 0.5 1.0 0.5 0.0 0.0 0.0 

Rhithropanopeus harrisii 0.0 0.0 0.0 0.0 0.0 0.5 1.0 0.5 0.0 0.0 0.0 

Sciaenops ocellatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Sesarma cinereum 0.0 0.0 0.0 1.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Syngnathus scovelli 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Trinectes maculatus 123.0 109.0 97.0 28.0 17.0 23.5 30.0 23.5 17.0 12.5 8.0 

Uca rapax 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Uca subcylindrica 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Unid. Shrimp remains 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Veticambarus sp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

TOTAL 1089.0 999.0 1600.0 716.0 757.0 2837.5 4918.0 2535.0 152.0 160.0 168.0 

SAMPLE WEEK Æ 09-03-06 09-10-06 09-17-06 09-24-06 10-01-06 10-08-06 10-15-06 10-22-06 10-29-06 11-05-06 11-12-06 

Alosa chrysochloris 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ameiurus melas 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ameiurus natalis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Anchoa mitchilli 2.0 16.0 15.0 12.0 11.0 27.0 38.0 10.0 399.0 7.0 5.0 

Anguilla rostrata 0.0 0.0 1.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Aphredoderus sayanus 0.0 2.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Applodinotus grunniens 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 1.0 Ariopsis felis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 5.0 0.0 0.0 Bagre marinus 0.0 0.0 0.0 0.0 0.0 1.0 0.0 0.0 0.0 0.0 0.0 Bathygobius soporator 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Brevoortia patronus 0.0 0.0 0.0 0.0 0.0 0.0 4.0 0.0 0.0 0.0 0.0 Callinectes sapidus 9.0 71.0 76.0 70.0 26.0 27.0 195.0 17.0 63.0 57.0 50.0 Cambaridae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Citharichthys spilopterus 0.0 3.0 7.0 2.0 4.0 0.0 13.0 2.0 4.0 1.0 0.0 Ctenogobius shufeldti 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Cynoscion arenarius 15.0 12.0 42.0 6.0 52.0 11.0 298.0 12.0 19.0 3.0 0.0 Decapoda 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Dormitator maculatus 0.0 0.0 7.0 3.0 1.0 1.0 48.0 5.0 2.0 1.0 1.0 Dorosoma cepedianum 0.0 0.0 0.0 0.0 1.0 0.0 1.0 0.0 0.0 1.0 0.0 Dorosoma petenense 2.0 3.0 1.0 0.0 0.0 0.0 0.0 0.0 3.0 0.0 4.0 Elops saurus 0.0 0.0 1.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Farfantepenaeus aztecus 3.0 70.0 720.0 275.0 109.0 25.0 839.0 143.0 803.0 18.0 0.0 Gambusia affinis 0.0 0.0 1.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Gobiidae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Gobioides broussonetii 0.0 0.0 0.0 0.0 0.0 0.0 2.0 0.0 0.0 0.0 0.0 
Table B-25: Total weekly impingement (adult) densities (number per 8-hour sample block) as sampled during the NIGHT samp

SHADED columns were derived by averaging from adjacent weeks. 

N:\CLIENT\CLECO\Teche\IM&E Characterization\Characterization Report\Appendix\Appendix B-Final 1 IME Report.doc 

SAMPLE WEEK Æ 09-03-06 09-10-06 09-17-06 09-24-06 10-01-06 10-08-06 10-15-06 10-22-06 10-29-06 11-05-06 11-12-06 

gobionellus oceanicus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Gobiosoma bosc 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ictalurus furcatus 0.0 4.0 5.0 2.0 0.0 0.0 3.0 0.0 0.0 0.0 0.0 Ictalurus punctatus 0.0 0.0 0.0 0.0 1.0 0.0 0.0 0.0 0.0 0.0 0.0 Ictiobus cyprinellus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Lepomis gulosus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Lepomis macrochirus 0.0 0.0 0.0 0.0 0.0 0.0 1.0 0.0 0.0 0.0 0.0 Lepomis megalotis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Lepomis symmetricus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Lucania parva 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Lutjanus griseus 0.0 0.0 0.0 0.0 0.0 0.0 5.0 0.0 1.0 0.0 1.0 Macrobrachium ohione 4.0 7.0 72.0 5.0 4.0 17.0 24.0 4.0 12.0 21.0 15.0 Membras martinica 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Menidia beryllina 0.0 0.0 1.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Micropogonias undulatus 0.0 0.0 0.0 0.0 0.0 0.0 4.0 0.0 0.0 0.0 0.0 Morone saxatilis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Mugil cephalus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Orconectes hobbsi 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Orconectes spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Paralichthys lethostigma 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 1.0 1.0 Polyodon spathula 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Pomoxis annularis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Prionotus tribulus 0.0 0.0 0.0 0.0 0.0 0.0 8.0 0.0 0.0 0.0 0.0 Pylodictis olivaris 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Rhithropanopeus harrisii 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Sciaenops ocellatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 1.0 Sesarma cinereum 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Syngnathus scovelli 0.0 0.0 0.0 0.0 1.0 0.0 0.0 0.0 0.0 0.0 0.0 Trinectes maculatus 23.0 50.0 78.0 182.0 33.0 7.0 61.0 19.0 55.0 19.0 11.0 Uca rapax 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Uca subcylindrica 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Unid. Shrimp remains 0.0 158.0 1662.0 283.0 112.0 28.0 370.0 4.0 0.0 0.0 0.0 Veticambarus sp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 TOTAL 58.0 396.0 2689.0 840.0 355.0 144.0 1914.0 216.0 1366.0 129.0 90.0 

SAMPLE WEEK Æ 12-03-06 12-10-06 12-17-06 12-24-06 12-31-06 01-07-07 01-14-07 01-24-07 01-28-07 02-04-07 

Alosa chrysochloris 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ameiurus melas 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.5 1.0 0.0 

Ameiurus natalis 0.0 0.0 0.0 0.5 1.0 0.5 0.0 0.0 0.0 0.0 

Anchoa mitchilli 27.0 14.5 2.0 1.0 0.0 1.0 2.0 2.5 3.0 3.0 

Anguilla rostrata 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Aphredoderus sayanus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Applodinotus grunniens 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 
Table B-25: Total weekly impingement (adult) densities (number per 8-hour sample block) as sampled during the NIGHT samp

SHADED columns were derived by averaging from adjacent weeks. 

N:\CLIENT\CLECO\Teche\IM&E Characterization\Characterization Report\Appendix\Appendix B-Final 1 IME Report.doc 

SAMPLE WEEK Æ 12-03-06 12-10-06 12-17-06 12-24-06 12-31-06 01-07-07 01-14-07 01-24-07 01-28-07 02-04-07 

Ariopsis felis 3.0 1.5 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Bagre marinus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Bathygobius soporator 2.0 1.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Brevoortia patronus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Callinectes sapidus 85.0 51.5 18.0 9.0 0.0 8.0 16.0 9.0 2.0 0.0 Cambaridae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Citharichthys spilopterus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Ctenogobius shufeldti 0.0 0.0 0.0 0.5 1.0 1.0 1.0 1.0 1.0 2.0 

Cynoscion arenarius 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Decapoda 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Dormitator maculatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Dorosoma cepedianum 0.0 0.5 1.0 0.5 0.0 0.0 0.0 0.0 0.0 0.0 

Dorosoma petenense 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 1.0 

Elops saurus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Farfantepenaeus aztecus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Gambusia affinis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Gobiidae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Gobioides broussonetii 1.0 0.5 0.0 0.5 1.0 0.5 0.0 1.0 2.0 1.0 

gobionellus oceanicus 2.0 1.0 0.0 0.0 0.0 0.0 0.0 0.5 1.0 0.0 

Gobiosoma bosc 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Ictalurus furcatus 4.0 3.5 3.0 4.5 6.0 6.0 6.0 4.0 2.0 2.0 

Ictalurus punctatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Ictiobus cyprinellus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Lepomis gulosus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.5 1.0 0.0 

Lepomis macrochirus 0.0 0.0 0.0 0.0 0.0 1.5 3.0 1.5 0.0 0.0 

Lepomis megalotis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Lepomis symmetricus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Lucania parva 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Lutjanus griseus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Macrobrachium ohione 39.0 31.5 24.0 29.0 34.0 25.5 17.0 19.0 21.0 50.0 

Membras martinica 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Menidia beryllina 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Micropogonias undulatus 1.0 0.5 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Morone saxatilis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Mugil cephalus 0.0 0.0 0.0 0.5 1.0 0.5 0.0 0.0 0.0 0.0 

Orconectes hobbsi 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Orconectes spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Paralichthys lethostigma 0.0 0.0 0.0 0.5 1.0 1.0 1.0 0.5 0.0 0.0 

Polyodon spathula 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Pomoxis annularis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Prionotus tribulus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Pylodictis olivaris 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Rhithropanopeus harrisii 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.5 1.0 0.0 

Sciaenops ocellatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Sesarma cinereum 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Syngnathus scovelli 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 
Table B-25: Total weekly impingement (adult) densities (number per 8-hour sample block) as sampled during the NIGHT samp

SHADED columns were derived by averaging from adjacent weeks. 

N:\CLIENT\CLECO\Teche\IM&E Characterization\Characterization Report\Appendix\Appendix B-Final 1 IME Report.doc 

SAMPLE WEEK Æ 12-03-06 12-10-06 12-17-06 12-24-06 12-31-06 01-07-07 01-14-07 01-24-07 01-28-07 02-04-07 

Trinectes maculatus 67.0 36.0 5.0 10.0 15.0 24.0 33.0 17.0 1.0 0.0 Uca rapax 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Uca subcylindrica 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Unid. Shrimp remains 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Veticambarus sp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

TOTAL 231.0 142.0 53.0 56.5 60.0 69.5 79.0 57.5 36.0 59.0 

SAMPLE WEEK Æ 03-04-07 03-11-07 03-18-07 03-25-07 04-01-07 04-08-07 04-15-07 04-22-07 04-29-07 05-06-07 05-1

Alosa chrysochloris 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ameiurus melas 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ameiurus natalis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Anchoa mitchilli 4.0 1.0 1.5 1.5 2.0 12.0 9.0 8.0 5.0 14.0 15Anguilla rostrata 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Aphredoderus sayanus 0.0 0.0 0.0 0.0 0.0 1.0 0.0 0.0 0.0 0.0 Applodinotus grunniens 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ariopsis felis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Bagre marinus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Bathygobius soporator 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Brevoortia patronus 0.0 0.0 0.0 0.0 0.0 2.0 1.0 0.0 2.0 5.0 Callinectes sapidus 0.0 4.0 2.5 2.5 1.0 22.0 2.0 49.0 4.0 13.0 3Cambaridae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Citharichthys spilopterus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ctenogobius shufeldti 6.0 1.0 1.0 1.0 1.0 0.0 1.0 0.0 0.0 0.0 Cynoscion arenarius 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 2.0 Decapoda 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Dormitator maculatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Dorosoma cepedianum 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Dorosoma petenense 0.0 0.0 0.0 0.0 0.0 3.0 0.0 0.0 0.0 1.0 Elops saurus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Farfantepenaeus aztecus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Gambusia affinis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Gobiidae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Gobioides broussonetii 0.0 0.0 0.0 0.0 0.0 0.0 8.0 0.0 1.0 1.0 gobionellus oceanicus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Gobiosoma bosc 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ictalurus furcatus 0.0 0.0 0.5 0.5 1.0 4.0 0.0 1.0 0.0 0.0 Ictalurus punctatus 0.0 0.0 0.0 0.0 0.0 0.0 1.0 0.0 0.0 2.0 Ictiobus cyprinellus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Lepomis gulosus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Lepomis macrochirus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Lepomis megalotis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Lepomis symmetricus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Lucania parva 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 1.0 Lutjanus griseus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Macrobrachium ohione 48.0 28.0 35.5 35.5 43.0 122.0 67.0 19.0 16.0 514.0 47Membras martinica 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 
Table B-25: Total weekly impingement (adult) densities (number per 8-hour sample block) as sampled during the NIGHT samp

SHADED columns were derived by averaging from adjacent weeks. 

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SAMPLE WEEK Æ 03-04-07 03-11-07 03-18-07 03-25-07 04-01-07 04-08-07 04-15-07 04-22-07 04-29-07 05-06-07 05-1

Menidia beryllina 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Micropogonias undulatus 10.0 2.0 71.5 71.5 141.0 12.0 7.0 13.0 54.0 88.0 43Morone saxatilis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Mugil cephalus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Orconectes hobbsi 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Orconectes spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 1.0 Paralichthys lethostigma 0.0 1.0 0.5 0.5 0.0 3.0 0.0 0.0 0.0 1.0 Polyodon spathula 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Pomoxis annularis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Prionotus tribulus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Pylodictis olivaris 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Rhithropanopeus harrisii 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 1.0 0.0 Sciaenops ocellatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Sesarma cinereum 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Syngnathus scovelli 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Trinectes maculatus 4.0 2.0 7.0 7.0 12.0 6.0 12.0 1.0 11.0 47.0 8Uca rapax 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Uca subcylindrica 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Unid. Shrimp remains 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Veticambarus sp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 TOTAL 72.0 39.0 120.0 120.0 201.0 187.0 108.0 91.0 94.0 690.0 120
Table B-26: Estimated total weekly impingement (adult) densities based on design flow data during the NIGHT sample block (E

design flow). Data in SHADED columns were derived by averaging from adjacent weeks. 

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SAMPLE WEEK Æ 06-04-06 06-11-06 06-18-06 06-25-06 07-02-06 07-09-06 07-16-06 07-23-07 07-30-06 08-06-06 

Alosa chrysochloris 0.0 0.0 0.0 0.0 0.0 0.0 0.0 4.6 9.2 4.6 Ameiurus melas 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Ameiurus natalis 0.0 18.4 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Anchoa mitchilli 202.3 294.2 294.2 36.8 55.2 4,141.9 8,228.7 4,146.5 64.4 73.6 

Anguilla rostrata 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Aphredoderus sayanus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Applodinotus grunniens 0.0 0.0 9.2 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Ariopsis felis 18.4 55.2 9.2 9.2 18.4 234.4 450.5 225.3 0.0 0.0 

Bagre marinus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Bathygobius soporator 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Brevoortia patronus 404.5 1,011.3 1,369.9 9.2 496.5 340.2 183.9 96.5 9.2 4.6 

Callinectes sapidus 5,479.6 1,618.1 928.6 441.3 947.0 1,494.0 2,041.1 1,489.4 937.8 993.0 Cambaridae 18.4 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Citharichthys spilopterus 698.7 1,195.2 2,841.0 395.3 542.4 698.7 855.0 427.5 0.0 4.6 Ctenogobius shufeldti 0.0 0.0 0.0 0.0 0.0 4.6 9.2 4.6 0.0 0.0 

Cynoscion arenarius 55.2 294.2 331.0 101.1 542.4 312.6 82.7 46.0 9.2 9.2 Decapoda 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Dormitator maculatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Dorosoma cepedianum 18.4 0.0 9.2 0.0 9.2 4.6 0.0 0.0 0.0 0.0 

Dorosoma petenense 18.4 0.0 0.0 0.0 0.0 4.6 9.2 9.2 9.2 4.6 Elops saurus 0.0 0.0 27.6 18.4 27.6 13.8 0.0 0.0 0.0 0.0 Farfantepenaeus aztecus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Gambusia affinis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Gobiidae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Gobioides broussonetii 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 gobionellus oceanicus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Gobiosoma bosc 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Ictalurus furcatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 18.4 

Ictalurus punctatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ictiobus cyprinellus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Lepomis gulosus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Lepomis macrochirus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 4.6 Lepomis megalotis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Lepomis symmetricus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Lucania parva 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Lutjanus griseus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Macrobrachium ohione 698.7 220.7 165.5 303.4 9.2 1,107.9 2,206.6 1,181.4 156.3 193.1 

Membras martinica 0.0 18.4 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Menidia beryllina 0.0 0.0 0.0 0.0 0.0 32.2 64.4 32.2 0.0 0.0 Micropogonias undulatus 10,131.8 11,584.5 7,759.8 4,992.4 4,118.9 17,422.7 30,726.4 15,377.0 27.6 32.2 

Morone saxatilis 0.0 0.0 0.0 0.0 0.0 4.6 9.2 4.6 0.0 0.0 

Mugil cephalus 18.4 18.4 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Orconectes hobbsi 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Orconectes spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 
Table B-26: Estimated total weekly impingement (adult) densities based on design flow data during the NIGHT sample block (E

design flow). Data in SHADED columns were derived by averaging from adjacent weeks. 

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SAMPLE WEEK Æ 06-04-06 06-11-06 06-18-06 06-25-06 07-02-06 07-09-06 07-16-06 07-23-07 07-30-06 08-06-06 

Paralichthys lethostigma 0.0 18.4 73.6 0.0 36.8 41.4 46.0 32.2 18.4 13.8 Polyodon spathula 0.0 0.0 0.0 9.2 0.0 4.6 9.2 4.6 0.0 0.0 

Pomoxis annularis 0.0 18.4 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Prionotus tribulus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Pylodictis olivaris 0.0 0.0 0.0 0.0 0.0 4.6 9.2 4.6 0.0 0.0 

Rhithropanopeus harrisii 0.0 0.0 0.0 0.0 0.0 4.6 9.2 4.6 0.0 0.0 

Sciaenops ocellatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Sesarma cinereum 0.0 0.0 0.0 9.2 0.0 0.0 0.0 0.0 0.0 0.0 

Syngnathus scovelli 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Trinectes maculatus 2,261.7 2,004.3 891.8 257.4 156.3 216.1 275.8 216.1 156.3 114.9 

Uca rapax 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Uca subcylindrica 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Unid. Shrimp remains 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Veticambarus sp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 TOTAL 20,024.6 18,369.7 14,710.4 6,582.9 6,959.9 26,088.1 45,216.2 23,306.9 1,397.5 1,471.0 

SAMPLE WEEK Æ 09-03-06 09-10-06 09-17-06 09-24-06 10-01-06 10-08-06 10-15-06 10-22-06 10-29-06 11-05-06 

Alosa chrysochloris 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ameiurus melas 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ameiurus natalis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Anchoa mitchilli 36.8 147.1 275.8 220.7 202.3 496.5 698.7 183.9 7,336.8 128.7 

Anguilla rostrata 0.0 0.0 18.4 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Aphredoderus sayanus 0.0 18.4 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Applodinotus grunniens 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ariopsis felis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 91.9 0.0 Bagre marinus 0.0 0.0 0.0 0.0 0.0 18.4 0.0 0.0 0.0 0.0 Bathygobius soporator 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Brevoortia patronus 0.0 0.0 0.0 0.0 0.0 0.0 73.6 0.0 0.0 0.0 Callinectes sapidus 165.5 652.8 1,397.5 1,287.2 478.1 496.5 3,585.7 312.6 1,158.4 1,048.1 Cambaridae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Citharichthys spilopterus 0.0 27.6 128.7 36.8 73.6 0.0 239.0 36.8 73.6 18.4 Ctenogobius shufeldti 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Cynoscion arenarius 275.8 110.3 772.3 110.3 956.2 202.3 5,479.6 220.7 349.4 55.2 Decapoda 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Dormitator maculatus 0.0 0.0 128.7 55.2 18.4 18.4 882.6 91.9 36.8 18.4 Dorosoma cepedianum 0.0 0.0 0.0 0.0 18.4 0.0 18.4 0.0 0.0 18.4 Dorosoma petenense 36.8 27.6 18.4 0.0 0.0 0.0 0.0 0.0 55.2 0.0 Elops saurus 0.0 0.0 18.4 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Farfantepenaeus aztecus 55.2 643.6 13,239.4 5,056.7 2,004.3 459.7 15,427.6 2,629.5 14,765.6 331.0 Gambusia affinis 0.0 0.0 18.4 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Gobiidae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Gobioides broussonetii 0.0 0.0 0.0 0.0 0.0 0.0 36.8 0.0 0.0 0.0 
Table B-26: Estimated total weekly impingement (adult) densities based on design flow data during the NIGHT sample block (E

design flow). Data in SHADED columns were derived by averaging from adjacent weeks. 

N:\CLIENT\CLECO\Teche\IM&E Characterization\Characterization Report\Appendix\Appendix B-Final 1 IME Report.doc 

SAMPLE WEEK Æ 09-03-06 09-10-06 09-17-06 09-24-06 10-01-06 10-08-06 10-15-06 10-22-06 10-29-06 11-05-06 

gobionellus oceanicus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Gobiosoma bosc 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ictalurus furcatus 0.0 36.8 91.9 36.8 0.0 0.0 55.2 0.0 0.0 0.0 Ictalurus punctatus 0.0 0.0 0.0 0.0 18.4 0.0 0.0 0.0 0.0 0.0 Ictiobus cyprinellus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Lepomis gulosus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Lepomis macrochirus 0.0 0.0 0.0 0.0 0.0 0.0 18.4 0.0 0.0 0.0 Lepomis megalotis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Lepomis symmetricus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Lucania parva 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Lutjanus griseus 0.0 0.0 0.0 0.0 0.0 0.0 91.9 0.0 18.4 0.0 Macrobrachium ohione 73.6 64.4 1,323.9 91.9 73.6 312.6 441.3 73.6 220.7 386.1 Membras martinica 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Menidia beryllina 0.0 0.0 18.4 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Micropogonias undulatus 0.0 0.0 0.0 0.0 0.0 0.0 73.6 0.0 0.0 0.0 Morone saxatilis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Mugil cephalus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Orconectes hobbsi 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Orconectes spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Paralichthys lethostigma 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 18.4 Polyodon spathula 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Pomoxis annularis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Prionotus tribulus 0.0 0.0 0.0 0.0 0.0 0.0 147.1 0.0 0.0 0.0 Pylodictis olivaris 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Rhithropanopeus harrisii 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Sciaenops ocellatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Sesarma cinereum 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Syngnathus scovelli 0.0 0.0 0.0 0.0 18.4 0.0 0.0 0.0 0.0 0.0 Trinectes maculatus 422.9 459.7 1,434.3 3,346.6 606.8 128.7 1,121.7 349.4 1,011.3 349.4 Uca rapax 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Uca subcylindrica 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Unid. Shrimp remains 0.0 1,452.7 30,561.0 5,203.8 2,059.5 514.9 6,803.6 73.6 0.0 0.0 Veticambarus sp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 TOTAL 1,066.5 3,640.8 49,445.5 15,446.0 6,527.8 2,647.9 35,194.7 3,971.8 25,118.1 2,372.1 

SAMPLE WEEK Æ 12-03-06 12-10-06 12-17-06 12-24-06 12-31-06 01-07-07 01-14-07 01-24-07 01-28-07 02-04-07 

Alosa chrysochloris 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ameiurus melas 0.0 0.0 0.0 0.0 0.0 0.0 0.0 9.2 18.4 0.0 

Ameiurus natalis 0.0 0.0 0.0 9.2 18.4 9.2 0.0 0.0 0.0 0.0 

Anchoa mitchilli 496.5 266.6 36.8 18.4 0.0 18.4 36.8 46.0 55.2 55.2 

Anguilla rostrata 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Aphredoderus sayanus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Applodinotus grunniens 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 
Table B-26: Estimated total weekly impingement (adult) densities based on design flow data during the NIGHT sample block (E

design flow). Data in SHADED columns were derived by averaging from adjacent weeks. 

N:\CLIENT\CLECO\Teche\IM&E Characterization\Characterization Report\Appendix\Appendix B-Final 1 IME Report.doc 

SAMPLE WEEK Æ 12-03-06 12-10-06 12-17-06 12-24-06 12-31-06 01-07-07 01-14-07 01-24-07 01-28-07 02-04-07 

Ariopsis felis 55.2 27.6 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Bagre marinus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Bathygobius soporator 36.8 18.4 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Brevoortia patronus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Callinectes sapidus 1,563.0 947.0 331.0 165.5 0.0 147.1 294.2 165.5 36.8 0.0 

Cambaridae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Citharichthys spilopterus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ctenogobius shufeldti 0.0 0.0 0.0 9.2 18.4 18.4 18.4 18.4 18.4 36.8 Cynoscion arenarius 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Decapoda 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Dormitator maculatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Dorosoma cepedianum 0.0 9.2 18.4 9.2 0.0 0.0 0.0 0.0 0.0 0.0 Dorosoma petenense 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 18.4 

Elops saurus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Farfantepenaeus aztecus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Gambusia affinis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Gobiidae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Gobioides broussonetii 18.4 9.2 0.0 9.2 18.4 9.2 0.0 18.4 36.8 18.4 

gobionellus oceanicus 36.8 18.4 0.0 0.0 0.0 0.0 0.0 9.2 18.4 0.0 Gobiosoma bosc 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Ictalurus furcatus 73.6 64.4 55.2 82.7 110.3 110.3 110.3 73.6 36.8 36.8 

Ictalurus punctatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Ictiobus cyprinellus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Lepomis gulosus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 9.2 18.4 0.0 

Lepomis macrochirus 0.0 0.0 0.0 0.0 0.0 27.6 55.2 27.6 0.0 0.0 Lepomis megalotis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Lepomis symmetricus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Lucania parva 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Lutjanus griseus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Macrobrachium ohione 717.1 579.2 441.3 533.3 625.2 468.9 312.6 349.4 386.1 919.4 

Membras martinica 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Menidia beryllina 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Micropogonias undulatus 18.4 9.2 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Morone saxatilis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Mugil cephalus 0.0 0.0 0.0 9.2 18.4 9.2 0.0 0.0 0.0 0.0 

Orconectes hobbsi 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Orconectes spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Paralichthys lethostigma 0.0 0.0 0.0 9.2 18.4 18.4 18.4 9.2 0.0 0.0 

Polyodon spathula 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Pomoxis annularis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Prionotus tribulus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Pylodictis olivaris 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Rhithropanopeus harrisii 0.0 0.0 0.0 0.0 0.0 0.0 0.0 9.2 18.4 0.0 Sciaenops ocellatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Sesarma cinereum 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Syngnathus scovelli 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 
Table B-26: Estimated total weekly impingement (adult) densities based on design flow data during the NIGHT sample block (E

design flow). Data in SHADED columns were derived by averaging from adjacent weeks. 

N:\CLIENT\CLECO\Teche\IM&E Characterization\Characterization Report\Appendix\Appendix B-Final 1 IME Report.doc 

SAMPLE WEEK Æ 12-03-06 12-10-06 12-17-06 12-24-06 12-31-06 01-07-07 01-14-07 01-24-07 01-28-07 02-04-07 

Trinectes maculatus 1,232.0 662.0 91.9 183.9 275.8 441.3 606.8 312.6 18.4 0.0 Uca rapax 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Uca subcylindrica 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Unid. Shrimp remains 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Veticambarus sp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 TOTAL 4,247.6 2,611.1 974.6 1,038.9 1,103.3 1,278.0 1,452.7 1,057.3 662.0 1,084.9 

SAMPLE WEEK Æ 03-04-07 03-11-07 03-18-07 03-25-07 04-01-07 04-08-07 04-15-07 04-22-07 04-29-07 05-06-07 05-1

Alosa chrysochloris 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ameiurus melas 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ameiurus natalis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Anchoa mitchilli 73.6 18.4 27.6 27.6 36.8 220.7 165.5 147.1 91.9 257.4 2,88Anguilla rostrata 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Aphredoderus sayanus 0.0 0.0 0.0 0.0 0.0 18.4 0.0 0.0 0.0 0.0 Applodinotus grunniens 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ariopsis felis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Bagre marinus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Bathygobius soporator 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Brevoortia patronus 0.0 0.0 0.0 0.0 0.0 36.8 18.4 0.0 36.8 91.9 3Callinectes sapidus 0.0 73.6 46.0 46.0 18.4 404.5 36.8 901.0 73.6 239.0 71Cambaridae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Citharichthys spilopterus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ctenogobius shufeldti 110.3 18.4 18.4 18.4 18.4 0.0 18.4 0.0 0.0 0.0 Cynoscion arenarius 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 36.8 1Decapoda 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Dormitator maculatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Dorosoma cepedianum 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Dorosoma petenense 0.0 0.0 0.0 0.0 0.0 55.2 0.0 0.0 0.0 18.4 1Elops saurus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Farfantepenaeus aztecus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Gambusia affinis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Gobiidae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Gobioides broussonetii 0.0 0.0 0.0 0.0 0.0 0.0 147.1 0.0 18.4 18.4 1gobionellus oceanicus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Gobiosoma bosc 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ictalurus furcatus 0.0 0.0 9.2 9.2 18.4 73.6 0.0 18.4 0.0 0.0 Ictalurus punctatus 0.0 0.0 0.0 0.0 0.0 0.0 18.4 0.0 0.0 36.8 Ictiobus cyprinellus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 5Lepomis gulosus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Lepomis macrochirus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Lepomis megalotis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Lepomis symmetricus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Lucania parva 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 18.4 Lutjanus griseus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Macrobrachium ohione 882.6 514.9 652.8 652.8 790.7 2,243.3 1,232.0 349.4 294.2 9,451.5 8,80Membras martinica 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 3
Table B-26: Estimated total weekly impingement (adult) densities based on design flow data during the NIGHT sample block (E

design flow). Data in SHADED columns were derived by averaging from adjacent weeks. 

N:\CLIENT\CLECO\Teche\IM&E Characterization\Characterization Report\Appendix\Appendix B-Final 1 IME Report.doc 

SAMPLE WEEK Æ 03-04-07 03-11-07 03-18-07 03-25-07 04-01-07 04-08-07 04-15-07 04-22-07 04-29-07 05-06-07 05-1

Menidia beryllina 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Micropogonias undulatus 183.9 36.8 1,314.7 1,314.7 2,592.7 220.7 128.7 239.0 993.0 1,618.1 7,94Morone saxatilis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Mugil cephalus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 3Orconectes hobbsi 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Orconectes spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 18.4 Paralichthys lethostigma 0.0 18.4 9.2 9.2 0.0 55.2 0.0 0.0 0.0 18.4 7Polyodon spathula 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Pomoxis annularis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Prionotus tribulus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Pylodictis olivaris 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Rhithropanopeus harrisii 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 18.4 0.0 Sciaenops ocellatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Sesarma cinereum 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Syngnathus scovelli 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Trinectes maculatus 73.6 36.8 128.7 128.7 220.7 110.3 220.7 18.4 202.3 864.2 1,50Uca rapax 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Uca subcylindrica 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Unid. Shrimp remains 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Veticambarus sp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 TOTAL 1,323.9 717.1 2,206.6 2,206.6 3,696.0 3,438.6 1,985.9 1,673.3 1,728.5 12,687.8 22,15
SAMPLE WEEK Æ 06-04-06 06-11-06 06-18-06 06-25-06 07-02-06 07-09-06 07-16-06 07-23-07 07-30-06 08-06-06 

Alosa chrysochloris 0.0 0.0 0.0 0.0 0.0 0.0 0.0 3.3 6.6 3.3 Ameiurus melas 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Ameiurus natalis 0.0 12.2 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Anchoa mitchilli 123.4 194.8 224.1 28.0 42.0 3153.5 6265.0 3155.7 46.4 51.8 

Anguilla rostrata 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Aphredoderus sayanus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Applodinotus grunniens 0.0 0.0 7.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Ariopsis felis 11.2 36.5 7.0 7.0 14.0 178.5 343.0 171.5 0.0 0.0 

Bagre marinus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Bathygobius soporator 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Brevoortia patronus 246.8 669.6 1043.6 7.0 378.4 259.2 140.0 73.3 6.6 3.3 

Callinectes sapidus 3342.5 1071.4 707.4 336.4 721.7 1137.8 1554.0 1115.3 676.6 699.8 Cambaridae 11.2 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Citharichthys spilopterus 426.2 791.4 2164.3 301.3 413.4 532.2 651.0 325.5 0.0 3.2 Ctenogobius shufeldti 0.0 0.0 0.0 0.0 0.0 3.5 7.0 3.5 0.0 0.0 

Cynoscion arenarius 33.6 194.8 252.1 77.1 413.4 238.2 63.0 34.8 6.6 6.5 Decapoda 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Dormitator maculatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Dorosoma cepedianum 11.2 0.0 7.0 0.0 7.0 3.5 0.0 0.0 0.0 0.0 

Dorosoma petenense 11.2 0.0 0.0 0.0 0.0 3.5 7.0 6.8 6.6 3.3 

Elops saurus 0.0 0.0 21.0 14.0 21.0 10.5 0.0 0.0 0.0 0.0 

Farfantepenaeus aztecus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Gambusia affinis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Gobiidae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Gobioides broussonetii 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

gobionellus oceanicus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Gobiosoma bosc 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Ictalurus furcatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 12.7 

Ictalurus punctatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Ictiobus cyprinellus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Lepomis gulosus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Lepomis macrochirus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 3.2 

Lepomis megalotis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Lepomis symmetricus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Lucania parva 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Lutjanus griseus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Macrobrachium ohione 426.2 146.1 126.1 231.2 7.0 843.5 1680.0 896.4 112.8 135.7 

Membras martinica 0.0 12.2 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Menidia beryllina 0.0 0.0 0.0 0.0 0.0 24.5 49.0 24.5 0.0 0.0 

Micropogonias undulatus 6180.3 7670.1 5911.4 3805.0 3138.9 13266.5 23394.0 11706.9 19.9 22.6 

Morone saxatilis 0.0 0.0 0.0 0.0 0.0 3.5 7.0 3.5 0.0 0.0 

Mugil cephalus 11.2 12.2 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Orconectes hobbsi 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Orconectes spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Paralichthys lethostigma 0.0 12.2 56.0 0.0 28.0 31.5 35.0 24.1 13.3 9.8 

Polyodon spathula 0.0 0.0 0.0 7.0 0.0 3.5 7.0 3.5 0.0 0.0 

Pomoxis annularis 0.0 12.2 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 
SAMPLE WEEK Æ 06-04-06 06-11-06 06-18-06 06-25-06 07-02-06 07-09-06 07-16-06 07-23-07 07-30-06 08-06-06 

Prionotus tribulus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Pylodictis olivaris 0.0 0.0 0.0 0.0 0.0 3.5 7.0 3.5 0.0 0.0 

Rhithropanopeus harrisii 0.0 0.0 0.0 0.0 0.0 3.5 7.0 3.5 0.0 0.0 

Sciaenops ocellatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Sesarma cinereum 0.0 0.0 0.0 7.0 0.0 0.0 0.0 0.0 0.0 0.0 

Syngnathus scovelli 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Trinectes maculatus 1379.6 1327.1 679.4 196.2 119.1 164.6 210.0 161.4 112.8 81.7 

Uca rapax 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Uca subcylindrica 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Unid. Shrimp remains 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Veticambarus sp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

TOTAL 12214.7 12162.6 11206.5 5017.3 5303.9 19865.0 34426.0 17717.1 1008.2 1036.8 

SAMPLE WEEK Æ 09-03-06 09-10-06 09-17-06 09-24-06 10-01-06 10-08-06 10-15-06 10-22-06 10-29-06 11-05-06 

Alosa chrysochloris 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ameiurus melas 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ameiurus natalis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Anchoa mitchilli 16.6 79.3 132.0 93.3 82.5 204.8 220.1 10.4 1685.6 51.4 

Anguilla rostrata 0.0 0.0 8.8 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Aphredoderus sayanus 0.0 9.9 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Applodinotus grunniens 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ariopsis felis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 21.1 0.0 Bagre marinus 0.0 0.0 0.0 0.0 0.0 7.6 0.0 0.0 0.0 0.0 Bathygobius soporator 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Brevoortia patronus 0.0 0.0 0.0 0.0 0.0 0.0 23.2 0.0 0.0 0.0 Callinectes sapidus 74.7 352.0 668.8 544.1 195.0 204.8 1129.4 17.7 266.2 418.9 Cambaridae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Citharichthys spilopterus 0.0 14.9 61.6 15.5 30.0 0.0 75.3 2.1 16.9 7.3 Ctenogobius shufeldti 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Cynoscion arenarius 124.5 59.5 369.6 46.6 390.0 83.4 1725.9 12.5 80.3 22.0 Decapoda 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Dormitator maculatus 0.0 0.0 61.6 23.3 7.5 7.6 278.0 5.2 8.4 7.3 Dorosoma cepedianum 0.0 0.0 0.0 0.0 7.5 0.0 5.8 0.0 0.0 7.3 Dorosoma petenense 16.6 14.9 8.8 0.0 0.0 0.0 0.0 0.0 12.7 0.0 Elops saurus 0.0 0.0 8.8 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Farfantepenaeus aztecus 24.9 347.1 6335.9 2137.5 817.5 189.6 4859.2 149.0 3392.4 132.3 Gambusia affinis 0.0 0.0 8.8 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Gobiidae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Gobioides broussonetii 0.0 0.0 0.0 0.0 0.0 0.0 11.6 0.0 0.0 0.0 gobionellus oceanicus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Gobiosoma bosc 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ictalurus furcatus 0.0 19.8 44.0 15.5 0.0 0.0 17.4 0.0 0.0 0.0 Ictalurus punctatus 0.0 0.0 0.0 0.0 7.5 0.0 0.0 0.0 0.0 0.0 Ictiobus cyprinellus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Lepomis gulosus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Lepomis macrochirus 0.0 0.0 0.0 0.0 0.0 0.0 5.8 0.0 0.0 0.0 
SAMPLE WEEK Æ 09-03-06 09-10-06 09-17-06 09-24-06 10-01-06 10-08-06 10-15-06 10-22-06 10-29-06 11-05-06 

Lepomis megalotis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Lepomis symmetricus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Lucania parva 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Lutjanus griseus 0.0 0.0 0.0 0.0 0.0 0.0 29.0 0.0 4.2 0.0 Macrobrachium ohione 33.2 34.7 633.6 38.9 30.0 128.9 139.0 4.2 50.7 154.3 Membras martinica 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Menidia beryllina 0.0 0.0 8.8 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Micropogonias undulatus 0.0 0.0 0.0 0.0 0.0 0.0 23.2 0.0 0.0 0.0 Morone saxatilis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Mugil cephalus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Orconectes hobbsi 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Orconectes spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Paralichthys lethostigma 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 7.3 Polyodon spathula 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Pomoxis annularis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Prionotus tribulus 0.0 0.0 0.0 0.0 0.0 0.0 46.3 0.0 0.0 0.0 Pylodictis olivaris 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Rhithropanopeus harrisii 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Sciaenops ocellatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Sesarma cinereum 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Syngnathus scovelli 0.0 0.0 0.0 0.0 7.5 0.0 0.0 0.0 0.0 0.0 Trinectes maculatus 190.9 247.9 686.4 1414.7 247.5 53.1 353.3 19.8 232.4 139.6 Uca rapax 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Uca subcylindrica 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Unid. Shrimp remains 0.0 783.4 14625.3 2199.7 840.0 212.3 2142.9 4.2 0.0 0.0 Veticambarus sp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 TOTAL 481.3 1963.5 23662.7 6529.2 2662.5 1092.0 11085.3 225.0 5770.8 948.1 

SAMPLE WEEK Æ 12-03-06 12-10-06 12-17-06 12-24-06 12-31-06 01-07-07 01-14-07 01-24-07 01-28-07 02-04-07 

Alosa chrysochloris 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ameiurus melas 0.0 0.0 0.0 0.0 0.0 0.0 0.0 3.5 7.0 0.0 

Ameiurus natalis 0.0 0.0 0.0 3.5 7.0 3.5 0.0 0.0 0.0 0.0 

Anchoa mitchilli 190.1 102.2 14.3 7.1 0.0 7.0 14.0 17.6 21.1 21.1 

Anguilla rostrata 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Aphredoderus sayanus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Applodinotus grunniens 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ariopsis felis 21.1 10.6 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Bagre marinus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Bathygobius soporator 14.1 7.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Brevoortia patronus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Callinectes sapidus 598.5 363.5 128.4 64.2 0.0 56.1 112.3 63.2 14.1 0.0 

Cambaridae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Citharichthys spilopterus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ctenogobius shufeldti 0.0 0.0 0.0 3.5 7.0 7.0 7.0 7.0 7.0 14.1 

Cynoscion arenarius 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Decapoda 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Dormitator maculatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 
SAMPLE WEEK Æ 12-03-06 12-10-06 12-17-06 12-24-06 12-31-06 01-07-07 01-14-07 01-24-07 01-28-07 02-04-07 

Dorosoma cepedianum 0.0 3.6 7.1 3.6 0.0 0.0 0.0 0.0 0.0 0.0 Dorosoma petenense 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 7.0 

Elops saurus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Farfantepenaeus aztecus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Gambusia affinis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Gobiidae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Gobioides broussonetii 7.0 3.5 0.0 3.5 7.0 3.5 0.0 7.0 14.1 7.0 

gobionellus oceanicus 14.1 7.0 0.0 0.0 0.0 0.0 0.0 3.5 7.0 0.0 

Gobiosoma bosc 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Ictalurus furcatus 28.2 24.8 21.4 31.7 42.0 42.1 42.1 28.1 14.1 14.1 

Ictalurus punctatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Ictiobus cyprinellus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Lepomis gulosus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 3.5 7.0 0.0 

Lepomis macrochirus 0.0 0.0 0.0 0.0 0.0 10.5 21.0 10.5 0.0 0.0 Lepomis megalotis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Lepomis symmetricus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Lucania parva 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Lutjanus griseus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Macrobrachium ohione 274.6 222.9 171.2 204.7 238.3 178.8 119.3 133.6 147.9 352.5 Membras martinica 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Menidia beryllina 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Micropogonias undulatus 7.0 3.5 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Morone saxatilis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Mugil cephalus 0.0 0.0 0.0 3.5 7.0 3.5 0.0 0.0 0.0 0.0 

Orconectes hobbsi 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Orconectes spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Paralichthys lethostigma 0.0 0.0 0.0 3.5 7.0 7.0 7.0 3.5 0.0 0.0 

Polyodon spathula 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Pomoxis annularis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Prionotus tribulus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Pylodictis olivaris 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Rhithropanopeus harrisii 0.0 0.0 0.0 0.0 0.0 0.0 0.0 3.5 7.0 0.0 Sciaenops ocellatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Sesarma cinereum 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Syngnathus scovelli 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Trinectes maculatus 471.8 253.7 35.7 70.4 105.1 168.3 231.5 119.3 7.0 0.0 

Uca rapax 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Uca subcylindrica 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Unid. Shrimp remains 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 

Veticambarus sp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 TOTAL 1626.6 1002.3 378.1 399.3 420.5 487.4 554.3 403.9 253.5 415.9 

SAMPLE WEEK Æ 03-04-07 03-11-07 03-18-07 03-25-07 04-01-07 04-08-07 04-15-07 04-22-07 04-29-07 05-06-07 05-1

Alosa chrysochloris 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ameiurus melas 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ameiurus natalis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Anchoa mitchilli 28.2 7.2 10.7 10.7 14.2 85.1 64.2 59.5 49.9 186.9 196
SAMPLE WEEK 

Æ 03-04-07 03-11-07 03-18-07 03-25-07 04-01-07 04-08-07 04-15-07 04-22-07 04-29-07 05-06-07 05-1

Anguilla rostrata 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Aphredoderus sayanus 0.0 0.0 0.0 0.0 0.0 7.1 0.0 0.0 0.0 0.0 Applodinotus grunniens 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ariopsis felis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Bagre marinus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Bathygobius soporator 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Brevoortia patronus 0.0 0.0 0.0 0.0 0.0 14.2 7.1 0.0 20.0 66.8 2Callinectes sapidus 0.0 28.9 18.0 18.0 7.1 156.0 14.3 364.2 39.9 173.6 48Cambaridae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Citharichthys spilopterus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ctenogobius shufeldti 42.3 7.2 7.2 7.2 7.1 0.0 7.1 0.0 0.0 0.0 Cynoscion arenarius 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 26.7 1Decapoda 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Dormitator maculatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Dorosoma cepedianum 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Dorosoma petenense 0.0 0.0 0.0 0.0 0.0 21.3 0.0 0.0 0.0 13.4 1Elops saurus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Farfantepenaeus aztecus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Gambusia affinis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Gobiidae 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Gobioides broussonetii 0.0 0.0 0.0 0.0 0.0 0.0 57.1 0.0 10.0 13.4 1gobionellus oceanicus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Gobiosoma bosc 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Ictalurus furcatus 0.0 0.0 3.5 3.5 7.1 28.4 0.0 7.4 0.0 0.0 Ictalurus punctatus 0.0 0.0 0.0 0.0 0.0 0.0 7.1 0.0 0.0 26.7 Ictiobus cyprinellus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 3Lepomis gulosus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Lepomis macrochirus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Lepomis megalotis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Lepomis symmetricus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Lucania parva 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 13.4 Lutjanus griseus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Macrobrachium ohione 338.6 202.1 253.5 253.5 304.9 865.0 477.9 141.2 159.8 6863.4 599Membras martinica 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 2Menidia beryllina 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Micropogonias undulatus 70.5 14.4 507.1 507.1 999.7 85.1 49.9 96.6 539.2 1175.1 540Morone saxatilis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Mugil cephalus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 2Orconectes hobbsi 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Orconectes spp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 13.4 Paralichthys lethostigma 0.0 7.2 3.6 3.6 0.0 21.3 0.0 0.0 0.0 13.4 5Polyodon spathula 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Pomoxis annularis 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Prionotus tribulus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Pylodictis olivaris 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Rhithropanopeus harrisii 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 10.0 0.0 Sciaenops ocellatus 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Sesarma cinereum 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Syngnathus scovelli 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Trinectes maculatus 28.2 14.4 49.8 49.8 85.1 42.5 85.6 7.4 109.8 627.6 102Uca rapax 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Uca subcylindrica 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Unid. Shrimp remains 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 
SAMPLE WEEK Æ 03-04-07 03-11-07 03-18-07 03-25-07 04-01-07 04-08-07 04-15-07 04-22-07 04-29-07 05-06-07 05-1

Veticambarus sp. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 TOTAL 507.9 281.4 853.3 853.3 1425.1 1325.8 770.4 676.4 938.5 9213.5 1507
 

 

Appendix C

National Heritage Species List







 

 

Appendix D

Lights On/ Lights Off Sampling Data
SPECIES COMMON NAME TOTAL PERCENT COMPOSITION

EGG Und. Egg 1165 100%

TOTAL 1165 100%

LARVAE 100% bay anchovy 2 3.85%

Catostomidae suckers 1 1.92%

Elops saurus ladyfish 1 1.92%

Unid. Fish remains 48 92.31%

TOTAL 52 100%

JUVENILE Anchoa mitchilli bay anchovy 123 3.00%

Anguilla rostrata American eel 6 0.15%

Brevoortia patronus Gulf menhaden 457 11.16%

Callinectes sapidus blue crab 1 <0.1%

Dormitator maculatus fat sleeper 1 <0.1%

Gambusia affinis western mosquitofish 1 <0.1%

Gobionellus shufeldti freshwater goby 1 <0.1%

Heterandria formosa least killifish 1 <0.1%

Ictaluridae ictalurus spp. 2 <0.1%

Macrobrachium ohione river shrimp 31 0.76%

Membras martinica rough silverside 1 <0.1%

Micropogonias undulatus Atlantic croaker 2 <0.1%

Syngnathus scovelli Gulf pipefish 3465 84.62%

Taphromysis louisinae mysid shrimp 1 <0.1%

Unid. Fish Remains 2 <0.1%

TOTAL 4095 100%

Anchoa mitchilli bay anchovy 180 3.46%

Anguilla rostrata American eel 16 0.31%

Aplodinotus grunniens freshwater drum 2 <0.1%

Brevoortia patronus Gulf menhaden 879 16.91%

Callinectes sapidus blue crab 312 6.00%

Ctenogobius shufeldti freshwater goby 1 <0.1%

Cynoscion arenarius sand seatrout 16 0.31%

Cynoscion nebulosus spotted seatrout 1 <0.1%

Dorosoma petenense threadfin shad 4 <0.1%

Farfantepenaeus aztecus brown shrimp 1 <0.1%

Gobionellus oceanicus highfin goby 5 <0.1%

Ictalurus furcatus blue catfish 9 0.17%

Ictalurus punctatus channel catfish 18 0.35%

Leiostomas xanthurus spot 9 0.17%

Macrobrachium ohione river shrimp 299 5.75%

Membras martinica rough silverside 5 <0.1%

Microgobius gulosus clown goby 1 <0.1%

Micropogonias undulatus Atlantic croaker 2246 43.22%

Morone saxatilis striped bass 1 <0.1%

Notemigonus crysoleucas golden shiner 7 0.13%

Orconectes sp. Orconectid crayfish 1 <0.1%

Paralichthys lethostigma southern flounder 63 1.21%

Phyllopodus branchiopoda fairy shrimp 1 <0.1%

Rhithropanopeus harrissi mud crab 4 <0.1%

Trinectes maculatus hogchoker 1111 21.38%

Unid. Gobiidae gobiidae spp. 3 <0.1%

Unid. Pelecypoda mollusca spp. 2 <0.1%

TOTAL 5197 100%

JUV/ADULT

IMPINGEMENT (# per sample block)

TECHE - APRIL & MAY 2007

LIGHTS - OFF

C & A combined sample block

ENTRAINMENT (# per 100 m3 sampled)
SPECIES COMMON NAME TOTAL PERCENT COMPOSITION

EGG Und. Egg 903 100%

TOTAL 903 100%

LARVAE Unid. Fish remains 10 71.42%

Aplodinotus grunniens freshwater drum 1 7.14%

Decapoda decapod crab 1 7.14%

Elops saurus ladyfish 1 7.14%

Sciaenidae drums & croakers 1 7.14%

TOTAL 14 100%

JUVENILE Syngnathus scovelli gulf pipefish 2565 86.71%

Brevoortia patronus gulf menhaden 285 9.63%

Anchoa mitchilli bay anchovy 66 2.23%

Macrobrachium ohione river shrimp 30 1.01%

Anguilla rostrata american eel 4 0.16%

Aplodinotus grunniens freshwater drum 1 <0.1%

Citharichthys spilopterus bay whiff 1 <0.1%

Cynoscion arenarius sand seatrout 1 <0.1%

Gobiosoma bosc naked goby 1 <0.1%

Micropogonias undulatus atlantic croaker 1 <0.1%

Taphromysis louisinae mysid shrimp 1 <0.1%

Trinectes maculatus hogchoker 1 <0.1%

Unid. Fish Remains 1 <0.1%

Dormitator maculatus fat sleeper 0 <0.1%

Gambusia affinis western mosquitofish 0 <0.1%

Gobionellus shufeldti freshwater goby 0 <0.1%

TOTAL 2958 100%

JUV/ADULT Macrobrachium ohione river shrimp 1607 43.29%

Micropogonias undulatus Atlantic croaker 986 26.56%

Trinectes maculatus hogchoker 414 11.15%

Anchoa mitchilli bay anchovy 304 8.19%

Callinectes sapidus blue crab 245 6.60%

Brevoortia patronus Gulf menhaden 44 1.19%

Paralichthys lethostigma southern flounder 40 1.08%

Gobioides broussonetii violet goby 16 0.43%

Ictalurus furcatus blue catfish 9 0.24%

Ictiobus cyprinellus bigmouth buffalo 8 0.22%

Ctenogobius shufeldti freshwater goby 7 0.19%

Ictalurus punctatus channel catfish 6 0.16%

Membras martinica rough silverside 6 0.16%

Cynoscion arenarius sand seatrout 5 0.13%

Anguilla rostrata American eel 2 <0.1%

Dorosoma petenense threadfin shad 2 <0.1%

Mugil cephalus striped mullet 2 <0.1%

Orconectes sp. Orconectid crayfish 2 <0.1%

Rhithropanopeus harrissi mud crab 2 <0.1%

Aphredoderus sayanus pirate perch 1 <0.1%

Lucania parva rainwater killifish 1 <0.1%

Pylodictis olivaris flathead catfish 1 <0.1%

Syngnathus scovelli Gulf pipefish 1 <0.1%

Uca rapax fiddler crab 1 <0.1%

TOTAL 3712 100%

IMPINGEMENT (# per sample block)

TECHE - APRIL & MAY 2007

C & A combined sample block

LIGHTS - ON

ENTRAINMENT (# per 100 m3 sampled)
 

ATTACHMENT B

AGENCY DATA REQUESTS/RESPONSE