Technical Support Document for U.S. EPA’s Proposed Rule for Numeric Nutrient Criteria,

Volume 1 Estuaries

Appendix F: Marine Lakes Analysis and 

Supporting Data

November 30, 2012
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Contents

Appendix F. Supporting Data for Marine Lakes Analysis ................................................. F-1

F.1 Candidate Marine Lake Selection ................................................................................. F-2

F.2 Water Quality Data Review .......................................................................................... F-3

F.2.1 Chloride, Salinity, and Specific Conductivity Review ..................................... F-3

F.3 Tidal Range Exclusion and Visual Analysis ............................................................... F-11

F.3.1 Water Quality Data ......................................................................................... F-14

F.3.2 303(d) listing ................................................................................................... F-29

F.3.3 Comparison to Inland Lake Criteria ............................................................... F-30

F.4 References ................................................................................................................... F-38
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Figures

Figure F-1. Aerial view of 210 candidate marine lakes with original 12 Class III marine 

lakes enlarged ........................................................................................................... F-2

Figure F-2. Chloride monitoring data box plot by lake name (1,500 mg/L threshold 

shown as line) ......................................................................................................... F-10

Figure F-3. Salinity monitoring data box plot by lake name (2.7 ppt threshold shown as 

horizontal line) ....................................................................................................... F-10

Figure F-4. Conductivity monitoring data box plot by lake name (4,950 μS/cm threshold 

shown as horizontal line) ........................................................................................ F-11

Figure F-5. Examples of water bodies eliminated (A) bay with direct connection to 

coastal waters (NHD_125273950), (B) canal in urban area 

(NHD_68792890), (C) swimming pool (NHD_125253200), and (D) marina 

with direct connection to ocean (NHD_116517975) ............................................. F-12

Figure F-6. Marine lakes alkalinity ............................................................................................ F-25

Figure F-7. Marine lakes chl-a ................................................................................................... F-25

Figure F-8. Marine lakes corrected chl-a ................................................................................... F-26

Figure F-9. Marine lakes color ................................................................................................... F-26

Figure F-10. Marine lakes DO ................................................................................................... F-27

Figure F-11. Marine lakes TN ................................................................................................... F-27

Figure F-12. Marine lakes TP .................................................................................................... F-28

Figure F-13. Marine lakes temperature ...................................................................................... F-28
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Tables

Table F-1. Chloride, salinity, and conductivity threshold comparison for 210 candidate 

lakes (212 NHD objects) .......................................................................................... F-5

Table F-2. 83 marine lakes candidates with marine decision and the reason included ............. F-13

Table F-3. Water quality data for 50 marine lakes; Q1 = 25th percentile, Q3 = 75th

percentile ................................................................................................................ F-15

Table F-4. Details of lakes listed on FDEP’s 303(d) list ........................................................... F-29

Table F-5. Inland criteria comparison data by year: green cell = annual geometric mean 

less than the criterion, yellow cell = annual geometric mean within the range 

of the criterion, and red cell = annual geometric mean greater than the 

criterion; NNC= numeric nutrient criteria .............................................................. F-31

Table F-6. Inland criteria comparison summary by lake class, lake criteria category, and 

comparison category (from data in Table F-5) ....................................................... F-37

Table F-7. Comparison to inland criteria with 303(d) impaired status; parentheses 

indicate number of lakes where chl-a, TN, and TP met the test for receiving 

potentially modified nitrogen and phosphorus criteria ........................................... F-38
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Appendix F. Supporting Data for Marine Lakes Analysis

This appendix summarizes an analysis to identify and review water quality data for marine lakes 

in Florida. Florida recognizes 12 dune lakes west of St. Andrews Bay along the Gulf Coast as 

marine lakes (classified by FDEP as Class III marine water bodies). A summary of this analysis 

is presented in Section 3 of the TSD, Volume 1. Those coastal dune lakes are characterized by 

having a sand substrate with some organic matter; they have intermittent connections to the 

ocean because of storm surges and can be subject to saltwater intrusion. 

One of the 12 Class III marine lakes, Deer Lake, has an average salinity of 0.23 ppt and might

not meet Section 62-302.200, F.A.C., distinguishing fresh and marine waters. However, Deer 

Lake is not identified on Florida’s 303(d) list of impaired waters for nutrients, chlorophyll a 

(chl-a), or dissolved oxygen (DO). Deer Lake does meet the corresponding colored lake 

freshwater lake criteria. Nine of the remaining 11 Class III marine lakes are listed as impaired for 

DO on Florida’s 303(d) list of impaired waters. One of those nine coastal dune lakes, Camp 

Creek Lake, is also listed for nutrients. Of the 38 potential marine lakes, 10 marine lakes are in 

water bodies (noted by water body identification number [WBID]) listed as impaired for 

nitrogen, two marine lakes are in WBIDs listed for chl-a, and 12 marine lakes are in WBIDs 

listed for DO.

Available geographic information system (GIS), satellite imagery, and water quality data were 

used to identify an additional 38 potential marine lakes that might include coastal rockland lakes 

and sinkhole lakes. The overall average TN, TP, and corrected chl-a levels for the 38 potential 

marine lakes was 1.01 mg/L TN, 0.067 mg/L TP, and 18.8 μg/L chl-a, respectively. The overall 

average concentrations for the Class III marine lakes are 0.46 mg/L TN, 0.020 mg/L TP, and 

5.4 μg/L chl-a. 

In comparison to the Water Quality Standards for the State of Florida’s Lakes and Flowing 

Waters; Final Rule (Final Rule) (USEPA 2010), eight Class III marine lakes meet the inland 

criteria, three Class III marine lakes are in range1 of potentially applicable criteria, and one Class

III marine lake exceeds the inland criteria. The one Class III marine lake exceeding the inland 

criteria was within the range provided for potentially receiving modified criteria under the 

modified criteria provisions of the Final Rule. Of the 29 potential marine lakes with nutrient 

data, 10 lakes meet the inland criteria, 3 are in range of potentially applicable criteria, 6 exceed 

the inland criteria, and 10 lakes have only one year of data—but the annual geometric mean for 

that year exceeds the inland criteria. Of the 6 lakes that exceed the inland criteria, 2 have TN, TP, 

and chl-a concentrations within the range for potentially receiving modified criteria under the 

modified criteria provisions of the Final Rule. Six of the 10 lakes that have only one year of data, 

and exceed the inland criteria, have TN, TP, and chl-a concentrations within the range for 

potentially receiving modified criteria.

 

1 EPA classified a lake as in range when insufficient data were available to classify the lake color or alkalinity for purposes of the 

inland criteria, but the corresponding nutrient and chlorophyll concentrations for the lake were greater than the criteria for clear, 

low alkalinity lakes, but less than criteria for colored lakes.
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F.1 Candidate Marine Lake Selection

The 12 lakes classified as marine lakes by Florida are all along the Gulf Coast, just west of St. 

Andrews Bay (see Figure F-1). Several data sources—including the Impaired Waters Rule

(IWR) Run 40 WBID data, USGS National Hydrography Dataset (NHD), satellite imagery, 

topographic maps, and IWR Run 40 station data—were used to identify additional candidate 

marine lakes.

Figure F-1. Aerial view of 210 candidate marine lakes with original 12 Class III marine lakes enlarged
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The approach used to identify additional candidate marine lakes for further analysis was based 

on selecting NHD water body objects classified as a lake, pond, or reservoir that also had IWR 

Run 40 monitoring data of interest. In Florida, 11,994 NHD water body objects within 6,560 ft 

(2,000 m) of the coastline were identified. When intersected with monitoring site locations from 

IWR Run 40, 174 NHD water body objects were found to have one or more monitoring sites 

with alkalinity, color, chl-a, chloride, specific conductance, DO, salinity, temperature, TN, or TP 

data. Although screening NHD water body objects for existing water quality data might result in 

eliminating water bodies that can be similar to the 12 identified marine lakes, the absence of 

monitoring data limit their usefulness for the current analysis.

FDEP provided two additional lists of potential marine lakes. One list had nine lakes selected by 

FDEP staff on the basis of local knowledge and did not include any water quality data. The other 

list had 41 lakes from the Integrated Water Resource Monitoring (IWRM) Network, selected for 

lakes having conductivity more than 4,000 μS/cm, and included water quality data. The two 

FDEP lists (9 + 41, or 50 lakes) were integrated with the 174 water bodies previously identified. 

After combining the 50 FDEP-identified lakes with the 174 previously identified lakes, 

212 NHD lakes object candidates were identified after accounting for duplication. Those 212 

objects correspond to 210 lakes because the NHD data divides two of the Class III marine lakes 

into two NHD objects each—Camp Creek Lake (NHD Com_IDs 122178217 and 122178347) 

and Eastern Lake (NHD Com_IDs 122178124 and 122178211). The 210 candidates are marked 

in Figure F-1. 

F.2 Water Quality Data Review

After identifying the 210 candidate marine lakes, the lakes were spatially joined in GIS to IWR 

Run 40 monitoring stations with a 33-ft (10-m) buffer. A total of 1,160 monitoring stations were 

identified with monitoring data for the parameters of interest and corresponding to the candidate 

lakes. Additional water quality data were included from the IWRM data for 41 stations, for a 

total of 1,201 stations and 140,101 observations for the parameters of interest. The observations 

were screened to remove unreasonable values thought to be the result of data entry error. Those 

data included two chl-a values greater than 600 μg/L that appeared to be outliers compared to 

other chl-a observations from those stations, DO data greater than 15 mg/L, salinity data greater 

than 60 ppt, and five temperature observation outliers less than 38.3 °F (3.5 °C) or greater than 

104 °F (40 °C). Because the goal of this analysis is to identify marine lakes with monitoring data, 

EPA reviewed chloride, salinity, and specific conductivity data to remove freshwater lakes and 

lakes without sufficient data from further analyses.

F.2.1 Chloride, Salinity, and Specific Conductivity Review

IWR Run 40 monitoring data for salinity, specific conductivity, and chloride were reviewed for 

the 210 candidate lakes (Table F-1). Thresholds for those three parameters were determined on 

the basis of the divide between fresh or marine waters. Pursuant to Section 62-302.200, F.A.C., 

“predominantly fresh waters shall mean surface waters in which the chloride concentration at the 

surface is less than 1,500 milligrams per liter.” Review of IWR Run 40 data revealed few 

observations of chloride; thus, salinity and conductivity measurements were also considered. 
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Thresholds

• Chloride—1,500 mg/L (Section 62-302.200, F.A.C.) 

• Salinity—2.7 ppt (Duxbury 1971) empirical relationship with chloride

• Specific conductivity—4,950 μS/cm based on average lake temperature from all 

observations of 75.61 °F (24.23 °C) (http://www.fivecreeks.org/monitor/sal.html) 

Salinity was correlated to chloride at 2.7 ppt according to an empirical relationship with chloride, 

as noted above, while conductivity was correlated to salinity and temperature using a calculator 

provided on the website listed above. To determine the conductivity threshold, a long-term 

average lake temperature of 75.61 °F (24.23 °C) (27,820 observations) for the 210 candidate 

lakes was used, along with the salinity target of 2.7 ppt. Temperature data recorded in Fahrenheit 

were first converted to Celsius. 

For each candidate lake, the number of observations for each parameter and the number of 

observations that exceeded the thresholds above were calculated. The percent of observations 

exceeding the thresholds were determined and are displayed in Table F-1 (the overall number of 

observations is shown in parentheses). 

Overall exceedance was calculated by summing the number of chloride, salinity, and 

conductivity observations exceeding the above thresholds and dividing by the total number of 

observations. Lakes with an overall exceedance greater than or equal to 20 percent were 

considered potential marine lakes. Choosing 20 percent as the threshold allowed for nearly all 

the original 12 Class III marine lakes to be considered marine as well as Lake Maggiore, which 

FDEP proposed as a marine lake candidate. All Class III marine lakes were considered marine 

except for Deer Lake, which had a percent exceedance of 1.16 percent (258 observations). Any 

lakes with fewer than five observations for the parameters were considered to have too few 

results to make a determination on freshwater/marine. On the basis of the results, the lakes were

grouped into the following assessment categories, and as summarized in Table F-1: 

• III marine—11 lakes (13 NHD objects) 

• III freshwater (i.e., Deer Lake)—1 lake

• Marine—71 lakes 

• Fresh—21 lakes

• Insufficient data (i.e., insufficient chloride, salinity, and conductivity data)—82 lakes 

• No data (i.e., no chloride, salinity, and conductivity data)—24 lakes 

Of the 210 candidate lakes, 104 were classified as freshwater or marine using the above 

procedures. The data are provided in Table F-1 with the first 83 classified as potential marine 

lakes. Figure F-2, Figure F-3, and Figure F-4 include box plots of those data.
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Table F-1. Chloride, salinity, and conductivity threshold comparison for 210 candidate lakes (212 NHD objects)

Name NHD Com ID

Chloride

%obs >1,500 

mg/L

Salinity

%obs >2.7 ppt

Conductivity

%obs >4,950 

μS/cm

Overall % 

Exceed

Assessment

Categorya

Deer Lake 122178150 0% (14) 0.4% (237) 29% (7) 1% (258) III Freshwater

Alligator Lake 35361059 33% (9) 46% (266) 44% (16) 46% (291) III Marine

Big Redfish Lake 35361021 61% (305) 61% (305) III Marine

Camp Creek Lake 122178217 & 

122178347

14% (14) 60% (260) 27% (15) 56% (289) III Marine

Draper Lake 35361005 100% (9) 79% (237) 100% (10) 81% (256) III Marine

Eastern Lake 122178124 & 

122178211

98% (577) 0% (2) 98% (579) III Marine

Little Redfish Lake 35361065 46% (277) 46% (277) III Marine

Morris Lake 35362925 0% (10) 40% (311) 0% (24) 36% (345) III Marine

Oyster Lake 35361013 38% (227) 38% (227) III Marine

Powell Lake 122196984 100% (2) 99% (504) 100% (6) 99% (512) III Marine

Stalworth Lake 35362961 30% (10) 51% (284) 36% (14) 50% (308) III Marine

Western Lake 122170304 100% (10) 93% (868) 100% (16) 93% (894) III Marine

Fannin Bayou 122196980 99% (67) 99% (67) Marine

Grass Lake 35357067 100% (9) 100% (10) 100% (9) 100% (28) Marine

Johnson Bayou 122176127 100% (5) 100% (5) Marine

Lake Earl 35358103 100% (146) 100% (146) Marine

Lake Maggiore 68768614 18% (311) 27% (214) 20% (337) 21% (862) Marine

Lake Placid 117030825 100% (6) 100% (6) Marine

Lake Worth Inner 

Channel

138369707 75% (4) 99% (258) 98% (1,014) 98% (1276) Marine

Loughman Lake 107777621 100% (2) 100% (3) 100% (5) Marine

Maule Lake 138374706 15% (13) 86% (864) 79% (936) 82% (1,813) Marine

Mud Bay 117066915 100% (3) 100% (6) 100% (9) Marine

Newman Bayou 122196989 100% (9) 100% (9) Marine

NHD_107712341 107712341 100% (2) 100% (3) 100% (5) Marine

NHD_116517925 116517925 100% (5) 100% (5) Marine

NHD_116517975 116517975 100% (5) 100% (5) Marine

NHD_116975467 116975467 60% (159) 60% (159) Marine

NHD_116995331 116995331 95% (37) 95% (37) Marine

NHD_122175873 122175873 100% (13) 100% (13) Marine

NHD_122181634 122181634 100% (379) 100% (379) Marine

NHD_122196993 122196993 87% (119) 87% (119) Marine

NHD_125253062 125253062 100% (16) 100% (16) Marine

NHD_125253200 125253200 100% (49) 100% (49) Marine

NHD_125256476 125256476 88% (16) 88% (16) 88% (32) Marine

NHD_125257161 125257161 100% (1) 100% (2) 100% (3) 100% (6) Marine

NHD_125262546 125262546 100% (71) 100% (71) Marine

NHD_125271306 125271306 100% (220) 100% (220) Marine

NHD_125271453 125271453 100% (267) 100% (267) Marine

NHD_125273950 125273950 100% (36) 100% (36) Marine

NHD_125545111 125545111 100% (17) 100% (17) Marine

NHD_125545903 125545903 100% (10) 99% (115) 99% (74) 99% (199) Marine

NHD_125548198 125548198 100% (15) 100% (15) 100% (30) Marine

NHD_125548403 125548403 82% (11) 73% (11) 77% (22) Marine

NHD_129758638 129758638 91% (314) 91% (314) Marine

NHD_135206150 135206150 45% (444) 51% (117) 46% (561) Marine
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Name NHD Com ID

Chloride

%obs >1,500 

mg/L

Salinity

%obs >2.7 ppt

Conductivity

%obs >4,950 

μS/cm

Overall % 

Exceed

Assessment

Categorya

NHD_135208276 135208276 100% (6) 100% (6) 100% (12) Marine

NHD_138362952 138362952 100% (22) 100% (22) Marine

NHD_138365388 138365388 96% (52) 96% (52) Marine

NHD_138374640 138374640 100% (15) 100% (15) 100% (30) Marine

NHD_138375978 138375978 94% (126) 93% (98) 94% (224) Marine

NHD_138376274 138376274 100% (6) 100% (6) Marine

NHD_138376279 138376279 90% (21) 91% (22) 91% (43) Marine

NHD_138376283 138376283 66% (918) 66% (927) 66% (1,845) Marine

NHD_138376288 138376288 28% (144) 22% (263) 24% (407) Marine

NHD_35361231 35361231 50% (10) 47% (15) 47% (15) 48% (40) Marine

NHD_45005443 45005443 100% (4) 0% (2) 67% (6) Marine

NHD_58671383 58671383 92% (12) 100% (13) 100% (13) 97% (38) Marine

NHD_58706243 58706243 100% (61) 100% (61) 100% (122) Marine

NHD_58706245 58706245 100% (187) 99% (188) 100% (375) Marine

NHD_58706247 58706247 92% (12) 100% (15) 100% (15) 98% (42) Marine

NHD_61257695 61257695 33% (6) 33% (6) 33% (12) Marine

NHD_61258787 61258787 100% (1) 100% (11) 100% (11) 100% (23) Marine

NHD_68753170 68753170 100% (4) 100% (15) 100% (19) Marine

NHD_68762768 68762768 100% (68) 100% (68) 100% (136) Marine

NHD_68792890 68792890 100% (5) 91% (11) 91% (11) 93% (27) Marine

NHD_78196995 78196995 100% (2) 100% (3) 100% (5) Marine

NHD_78202437 78202437 100% (15) 13% (15) 57% (30) Marine

NHD_78216111 78216111 96% (48) 96% (48) 96% (96) Marine

NHD_78218087 78218087 100% (19) 100% (19) Marine

NHD_78605021 78605021 33% (3) 33% (3) 33% (6) Marine

NHD_78673003 78673003 85% (13) 85% (13) Marine

NHD_83012015 83012015 100% (111) 100% (111) Marine

Peck Lake 138364367 100% (3) 100% (192) 100% (235) 100% (430) Marine

Pippin Lakeb 35357089 100% (1) 97% (362) 100% (2) 97% (365) Marine

Red Lake 61269171 100% (16) 100% (16) Marine

Salt Lake 107712397 100% (2) 100% (3) 100% (5) Marine

Sheephead Bayou 122196991 100% (7) 100% (7) Marine

Tarkiln Bayou 41224219 100% (10) 100% (18) 100% (28) Marine

Tarpon Creek 135209949 100% (1) 100% (212) 100% (3) 100% (216) Marine

Tee Lake 41221821 20% (10) 0% (1) 55% (11) 36% (22) Marine

Warner East Bayou 45003513 100% (3) 0% (2) 60% (5) Marine

Warner West Bayou 45045361 100% (4) 0% (4) 50% (8) Marine

Wicker Lakes 41221785 25% (4) 0% (1) 50% (6) 36% (11) Marine

Campbell Lakec 35362941 0% (10) 0% (305) 0% (57) 0% (372) Fresh

Deer Point Lake 122162436 0% (3) 0% (249) 0% (5) 0% (257) Fresh

Fuller Lakec 120023948 0.8% (251) 0.8% (251) Fresh

Kings Bay 58670151 0% (7) 2% (132) 3% (406) 3% (545) Fresh

Lake Seminole 120024097 0% (1134) 0% (3785) 0% (4822) 0% (9741) Fresh

Lake Tarpon 68792760 0% (1189) 0% (7592) 0% (8089) 0% (16,870) Fresh

Lake Wimico 130052351 0% (16) 0% (16) Fresh

Mirror Lake 68787640 0% (7) 0% (7) 0% (12) 0% (26) Fresh

NHD_117059253 117059253 0% (6) 0% (6) Fresh

NHD_120023955c 120023955 0% (173) 0% (173) Fresh

NHD_122164333 122164333 0% (2) 0% (2) 0% (2) 0% (6) Fresh
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Name NHD Com ID

Chloride

%obs >1,500 

mg/L

Salinity

%obs >2.7 ppt

Conductivity

%obs >4,950 

μS/cm

Overall % 

Exceed

Assessment

Categorya

NHD_138362326 138362326 0% (8) 0% (8) 0% (16) Fresh

NHD_138363474 138363474 0% (6) 0% (119) 0% (125) Fresh

NHD_32414541 32414541 0% (1) 0% (4) 0% (5) Fresh

NHD_35358073 35358073 0% (22) 0% (22) Fresh

NHD_35363031c 35363031 10% (10) 0% (10) 0% (10) 3% (30) Fresh

NHD_61259237 61259237 0% (23) 0% (37) 0% (36) 0% (96) Fresh

NHD_68783400 68783400 0% (28) 0% (487) 0% (601) 0% (1,116) Fresh

NHD_78628289 78628289 0% (2) 0% (5) 0% (7) Fresh

Saint George Lake 68759534 0% (5) 0% (5) 0% (10) 0% (20) Fresh

Wright Basin 40517035 9% (11) 9% (11) Fresh

Honeymoon Lake 125253154 100% (1) 100% (1) 100% (2) Insufficient Data

Jack Lake 35358041 100% (1) 100% (3) 100% (4) Insufficient Data

Marquis Basin 120023983 0% (1) 0% (1) Insufficient Data

Moses Hole 68762810 100% (1) 0% (1) 50% (2) Insufficient Data

Mullet Pond 114313455 50% (2) 50% (2) Insufficient Data

NHD_107712425 107712425 100% (1) 100% (2) 100% (3) Insufficient Data

NHD_108134607 108134607 100% (1) 100% (3) 100% (4) Insufficient Data

NHD_108146761 108146761 100% (1) 100% (2) 100% (3) Insufficient Data

NHD_114967889 114967889 100% (1) 100% (2) 100% (3) Insufficient Data

NHD_114977267 114977267 100% (1) 100% (2) 100% (3) Insufficient Data

NHD_116504949 116504949 100% (1) 100% (1) 100% (2) Insufficient Data

NHD_116517633 116517633 100% (4) 100% (4) Insufficient Data

NHD_116517895 116517895 100% (4) 100% (4) Insufficient Data

NHD_116518025 116518025 100% (4) 100% (4) Insufficient Data

NHD_116518029 116518029 100% (4) 100% (4) Insufficient Data

NHD_116526021 116526021 100% (3) 100% (3) Insufficient Data

NHD_116980013 116980013 100% (1) 100% (1) Insufficient Data

NHD_116984015 116984015 0% (1) 0% (2) 0% (3) Insufficient Data

NHD_117079481 117079481 100% (1) 100% (3) 100% (4) Insufficient Data

NHD_117079643 117079643 0% (1) 50% (2) 33% (3) Insufficient Data

NHD_117083079 117083079 0% (1) 0% (3) 0% (4) Insufficient Data

NHD_120009918 120009918 100% (1) 100% (2) 100% (3) Insufficient Data

NHD_120024597 120024597 100% (1) 0% (1) 50% (2) Insufficient Data

NHD_122170680 122170680 0% (2) 0% (2) 0% (4) Insufficient Data

NHD_122170691 122170691 0% (1) 0% (1) 0% (2) Insufficient Data

NHD_122176122 122176122 100% (1) 100% (2) 100% (3) Insufficient Data

NHD_122178148 122178148 0% (4) 0% (4) Insufficient Data

NHD_122178974 122178974 0% (1) 0% (1) 0% (2) Insufficient Data

NHD_122181695 122181695 100% (2) 100% (2) 100% (4) Insufficient Data

NHD_122181722 122181722 100% (1) 100% (1) 100% (2) Insufficient Data

NHD_127400083 127400083 100% (1) 100% (1) Insufficient Data

NHD_138369257 138369257 100% (1) 100% (1) 100% (2) Insufficient Data

NHD_138376327 138376327 100% (3) 100% (3) Insufficient Data

NHD_138388217 138388217 100% (3) 100% (3) Insufficient Data

NHD_167162625 167162625 100% (1) 0% (1) 50% (2) Insufficient Data

NHD_167162651 167162651 100% (1) 0% (1) 50% (2) Insufficient Data

NHD_167165182 167165182 0% (1) 0% (1) 0% (2) Insufficient Data

NHD_32401541 32401541 0% (1) 0% (1) 0% (2) Insufficient Data

NHD_32414543 32414543 0% (1) 0% (2) 0% (3) Insufficient Data
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Name NHD Com ID

Chloride

%obs >1,500 

mg/L

Salinity

%obs >2.7 ppt

Conductivity

%obs >4,950 

μS/cm

Overall % 

Exceed

Assessment

Categorya

NHD_44980400 44980400 100% (1) 0% (1) 50% (2) Insufficient Data

NHD_45004979 45004979 100% (1) 100% (1) Insufficient Data

NHD_45005577 45005577 100% (1) 0% (1) 50% (2) Insufficient Data

NHD_45045357 45045357 100% (1) 0% (1) 50% (2) Insufficient Data

NHD_56693141 56693141 100% (2) 100% (2) 100% (4) Insufficient Data

NHD_58674621 58674621 100% (1) 100% (2) 100% (3) Insufficient Data

NHD_58676023 58676023 100% (3) 100% (3) Insufficient Data

NHD_58693435 58693435 100% (1) 0% (1) 50% (2) Insufficient Data

NHD_58703359 58703359 100% (1) 0% (1) 50% (2) Insufficient Data

NHD_58703407 58703407 0% (3) 0% (3) Insufficient Data

NHD_58704387 58704387 100% (3) 100% (3) Insufficient Data

NHD_68743100 68743100 100% (1) 0% (1) 50% (2) Insufficient Data

NHD_68752508 68752508 100% (1) 0% (1) 50% (2) Insufficient Data

NHD_68752514 68752514 100% (1) 0% (1) 50% (2) Insufficient Data

NHD_68752526 68752526 100% (1) 0% (1) 50% (2) Insufficient Data

NHD_68755794 68755794 100% (2) 100% (2) 100% (4) Insufficient Data

NHD_68762658 68762658 0% (1) 0% (1) 0% (2) Insufficient Data

NHD_68763466 68763466 0% (1) 0% (1) 0% (2) Insufficient Data

NHD_68763474 68763474 100% (1) 0% (1) 50% (2) Insufficient Data

NHD_68763510 68763510 100% (1) 0% (1) 50% (2) Insufficient Data

NHD_68768746 68768746 100% (1) 0% (1) 50% (2) Insufficient Data

NHD_68769242 68769242 100% (1) 0% (1) 50% (2) Insufficient Data

NHD_68781250 68781250 100% (1) 0% (1) 50% (2) Insufficient Data

NHD_68781258 68781258 100% (1) 0% (1) 50% (2) Insufficient Data

NHD_68787812 68787812 100% (2) 100% (2) Insufficient Data

NHD_68789624 68789624 100% (1) 0% (1) 50% (2) Insufficient Data

NHD_68789634 68789634 100% (1) 0% (1) 50% (2) Insufficient Data

NHD_78187911 78187911 100% (1) 100% (3) 100% (4) Insufficient Data

NHD_78193391 78193391 100% (1) 100% (2) 100% (3) Insufficient Data

NHD_78194567 78194567 100% (1) 100% (3) 100% (4) Insufficient Data

NHD_78205339 78205339 0% (1) 33% (3) 25% (4) Insufficient Data

NHD_78210327 78210327 100% (1) 100% (1) 100% (2) Insufficient Data

NHD_78628857 78628857 0% (1) 0% (1) 0% (1) 0% (3) Insufficient Data

NHD_78690883 78690883 100% (2) 100% (2) 100% (4) Insufficient Data

NHD_83679389 83679389 100% (1) 100% (3) 100% (4) Insufficient Data

NHD_83681675 83681675 100% (2) 100% (2) 100% (4) Insufficient Data

Picnic Pond 129758139 100% (1) 100% (1) Insufficient Data

Raccoon Lake 120006937 100% (1) 100% (2) 100% (3) Insufficient Data

Sherman Inlet 32400187 100% (1) 100% (1) 100% (2) Insufficient Data

Trout Lake 35363507 0% (1) 0% (1) 0% (2) Insufficient Data

Tucker Lake 129959388 100% (1) 100% (1) 100% (2) 100% (4) Insufficient Data

Warren Bayou 122196987 100% (2) 100% (2) Insufficient Data

West Lake 135209822 100% (1) 100% (3) 100% (4) Insufficient Data

Cliff Lake 138372852 No data

Dove Sound 116525999 No data

Hammock Lake 138375631 No data

Hidden Laked 58706359 No data

Lake Avacod 58706181 No data

Lake Melva 138372556 No data
Technical Support Document for U.S. EPA’s Proposed Rule for Numeric Nutrient Criteria,

Volume 1 Estuaries

F-9

Name NHD Com ID

Chloride

%obs >1,500 

mg/L

Salinity

%obs >2.7 ppt

Conductivity

%obs >4,950 

μS/cm

Overall % 

Exceed

Assessment

Categorya

Lake Seneca 138372211 No data

Mile Lake 138363584 No Data

NHD_116526023 116526023 No Data

NHD_117058681 117058681 No Data

NHD_138375668 138375668 No Data

NHD_35357225 35357225 No Data

NHD_35357227 35357227 No Data

NHD_35357355 35357355 No Data

NHD_58671287 58671287 No Data

NHD_78216141 78216141 No Data

NHD_78216157 78216157 No Data

NHD_78216205 78216205 No Data

NHD_78216599 78216599 No Data

NHD_78216773 78216773 No Data

NHD_78216789 78216789 No Data

NHD_78216877 78216877 No Data

NHD_83021671 83021671 No Data

The Cutoff 135208215 No Data

Notes: %obs= percent observation

a. Class III marine corresponds to lakes identified as candidate marine lakes from IWR Run 40.

b. Data for Pippin Lake were from two stations whose GPS points did not place the stations within the NHD polygons, although 

the descriptions of the stations were at the mouth of Pippin Lake. 

c. Non-Class III marine lakes along coast between St. Andrews Bay and Choctawhatchee Bay.

d. These two lakes did not have water quality data for chloride, salinity, and conductivity. They also had no water quality data 

for the parameters of interest associated with either data source. They were included in this list to account for all the lakes 

suggested by FDEP.
Technical Support Document for U.S. EPA’s Proposed Rule for Numeric Nutrient Criteria,

Volume 1 Estuaries

F-10

Figure F-2. Chloride monitoring data box plot by lake name (1,500 mg/L threshold shown as line)

Figure F-3. Salinity monitoring data box plot by lake name (2.7 ppt threshold shown as horizontal line)
Technical Support Document for U.S. EPA’s Proposed Rule for Numeric Nutrient Criteria,

Volume 1 Estuaries

F-11

Figure F-4. Conductivity monitoring data box plot by lake name (4,950 μS/cm threshold shown as horizontal line)

F.3 Tidal Range Exclusion and Visual Analysis

FDEP provided a tidal range analysis for the Tampa Bay area to further refine the selection of 

candidate marine lakes. Existing tide gauges and topography were used to determine whether the 

candidate lakes were within the tidal range of a system. If a lake was at too high of an elevation 

and above the tidal range of a system, it was not likely to receive sufficiently frequent tidal 

inundation to be considered a marine lake. The data help refine the selection of marine lakes 

beyond the selection according to the 6,560 ft (2,000 m) distance to the coast and marine water 

quality parameter thresholds. The data were used to exclude 10 lakes of the remaining 71 nonClass III marine candidates, as indicated in Table F-2 as outside tidal range in the reason column 

(Kovach, Charles, senior scientist, FDEP, Southwest Region, personal communication, April 15, 

2011). 

As a final screening step, the remaining 61 non-Class III marine candidate marine lakes were 

visually assessed using satellite imagery as a quality control step. Water bodies corresponding to 

channels or canals, bays with significant connections to the ocean, urban features such as golf 

course lakes, and objects that were clearly not lakes, such as a swimming pool or sandy berm, 

were eliminated. Examples of eliminated water bodies are shown in Figure F-5. 

The satellite imagery used was i-cubed Nationwide Prime 1-m or better resolution, which is a 

mosaic of color best available imagery from various commercial and government data sources 

available for the contiguous United States.
Technical Support Document for U.S. EPA’s Proposed Rule for Numeric Nutrient Criteria,

Volume 1 Estuaries

F-12

The 83 candidate marine lakes assessed are provided in Table F-2, and the reason column 

indicates those lakes that were included/excluded as a result of the visual and tidal range 

analyses. Twenty-three lakes were excluded on the basis of the visual analysis, and 10 were 

excluded on the basis of the tidal range analysis. A total of 50 potential marine lakes remained, 

including the original 12 Class III marine lakes and 38 additional marine lakes referred to in 

subsequent analyses as additional lakes.

(A) (B)

(C) (D)

Figure F-5. Examples of water bodies eliminated (A) bay with direct connection to coastal waters 

(NHD_125273950), (B) canal in urban area (NHD_68792890), (C) swimming pool (NHD_125253200), and 

(D) marina with direct connection to ocean (NHD_116517975)
Technical Support Document for U.S. EPA’s Proposed Rule for Numeric Nutrient Criteria,

Volume 1 Estuaries

F-13

Table F-2. 83 marine lakes candidates with marine decision and the reason included

Name NHD Com ID WBIDa Overall % 

Exceed Lake Class Decision Reason

Deer Lake 122178150 1040A 1% (258) III Freshwater Include III Marine Lake

Alligator Lake 35361059 959E 46% (291) III Marine Include III Marine Lake

Big Redfish Lake 35361021 959I 61% (305) III Marine Include III Marine Lake

Camp Creek Lake 122178217 & 

122178347

1027A 56% (289) III Marine Include III Marine Lake

Draper Lake 35361005 959D 81% (256) III Marine Include III Marine Lake

Eastern Lake 122178124 & 

122178211

1037 98% (579) III Marine Include III Marine Lake

Little Redfish Lake 35361065 959J 46% (277) III Marine Include III Marine Lake

Morris Lake 35362925 959 36% (345) III Marine Include III Marine Lake

Oyster Lake 35361013 959C 38% (227) III Marine Include III Marine Lake

Powell Lake 122196984 1055A 99% (512) III Marine Include III Marine Lake

Stalworth Lake 35362961 959B 50% (308) III Marine Include III Marine Lake

Western Lake 122170304 1009A 93% (894) III Marine Include III Marine Lake

Grass Lake 35357067 759 100% (28) Additional Include Visual Analysis

Johnson Bayou 122176127 1131 100% (5) Additional Include Visual Analysis

Lake Earl 35358103 874 100% (146) Additional Include Visual Analysis

Lake Maggiore 68768614 1731A 21% (862) Additional Include Visual Analysis

Lake Placid 117030825 3259M 100% (6) Additional Include Visual Analysis

Loughman Lake 107777621 2978A 100% (5) Additional Include Visual Analysis

Maule Lake 138374706 3226H1 82% (1813) Additional Include Visual Analysis

Mud Bay 117066915 3259M 100% (9) Additional Include Visual Analysis

NHD_107712341 107712341 2978D 100% (5) Additional Include Visual Analysis

NHD_116995331 116995331 3258E1 95% (37) Additional Include Visual Analysis

NHD_122175873 122175873 1084 100% (13) Additional Include Visual Analysis

NHD_125253062 125253062 3044A 100% (16) Additional Include Visual Analysis

NHD_125256476 125256476 2963D 88% (32) Additional Include Visual Analysis

NHD_125257161 125257161 3044B 100% (6) Additional Include Visual Analysis

NHD_125271453 125271453 2963D 100% (267) Additional Include Visual Analysis

NHD_125548403 125548403 2499 77% (22) Additional Include Visual Analysis

NHD_129758638 129758638 1239 91% (314) Additional Include Visual Analysis

NHD_135208276 135208276 3289P 100% (12) Additional Include Visual Analysis

NHD_138365388 138365388 3226D 96% (52) Additional Include Visual Analysis

NHD_138374640 138374640 3226L 100% (30) Additional Include Visual Analysis

NHD_138376274 138376274 3303B 100% (6) Additional Include Visual Analysis

NHD_138376279 138376279 3303B 91% (43) Additional Include Visual Analysis

NHD_138376283 138376283 3303B1 66% (1845) Additional Include Visual Analysis

NHD_138376288 138376288 3303B1 24% (407) Additional Include Visual Analysis

NHD_35361231 35361231 959F 48% (40) Additional Include Visual Analysis

NHD_58671383 58671383 1535 97% (38) Additional Include Visual Analysis

NHD_78196995 78196995 2086 100% (5) Additional Include Visual Analysis

NHD_78216111 78216111 2092G 96% (96) Additional Include Visual Analysis

NHD_78673003 78673003 2056E 85% (13) Additional Include Visual Analysis

NHD_83012015 83012015 5003DA 100% (111) Additional Include Visual Analysis

Peck Lake 138364367 3208A 100% (430) Additional Include Visual Analysis

Pippin Lake 35357089 772 97% (365) Additional Include Visual Analysis

Red Lake 61269171 2018 100% (16) Additional Include Visual Analysis

Salt Lake 107712397 2978B 100% (5) Additional Include Visual Analysis

Tarkiln Bayou 41224219 945 100% (28) Additional Include Visual Analysis
Technical Support Document for U.S. EPA’s Proposed Rule for Numeric Nutrient Criteria,

Volume 1 Estuaries

F-14

Name NHD Com ID WBIDa Overall % Exceed Lake Class Decision Reason

Tarpon Creek 135209949 3289I 100% (216) Additional Include Visual Analysis

Tee Lake 41221821 784 36% (22) Additional Include Visual Analysis

Wicker Lakes 41221785 784 36% (11) Additional Include Visual Analysis

Fannin Bayou 122196980 999 99% (67) Additional Exclude Visual Analysis

Lake Worth Inner 

Channel

138369707 3226F2 98% (1276) Additional Exclude Visual Analysis

Newman Bayou 122196989 1057 100% (9) Additional Exclude Visual Analysis

NHD_116517925 116517925 6006A 100% (5) Additional Exclude Visual Analysis

NHD_116517975 116517975 6006A 100% (5) Additional Exclude Visual Analysis

NHD_116975467 116975467 3289L 60% (159) Additional Exclude Visual Analysis

NHD_122181634 122181634 1053A 100% (379) Additional Exclude Visual Analysis

NHD_122196993 122196993 1086 87% (119) Additional Exclude Visual Analysis

NHD_125253200 125253200 3057A 100% (49) Additional Exclude Visual Analysis

NHD_125262546 125262546 2963A 100% (71) Additional Exclude Visual Analysis

NHD_125271306 125271306 2963A 100% (220) Additional Exclude Visual Analysis

NHD_125273950 125273950 2963E 100% (36) Additional Exclude Visual Analysis

NHD_125545111 125545111 2363F 100% (17) Additional Exclude Visual Analysis

NHD_125545903 125545903 2672 99% (199) Additional Exclude Visual Analysis

NHD_125548198 125548198 2487 100% (30) Additional Exclude Visual Analysis

NHD_135206150 135206150 3289H 46% (561) Additional Exclude visual analysis

NHD_138362952 138362952 3194C 100% (22) Additional Exclude visual analysis

NHD_138375978 138375978 3298 94% (224) Additional Exclude visual analysis

NHD_45005443 45005443 1876 67% (6) Additional Exclude Outside Tidal Range

NHD_58706243 58706243 1440A 100% (122) Additional Exclude Outside Tidal Range

NHD_58706245 58706245 1440A 100% (375) Additional Exclude Outside Tidal Range

NHD_58706247 58706247 1440A 98% (42) Additional Exclude Outside Tidal Range

NHD_61257695 61257695 1984 33% (12) Additional Exclude Outside Tidal Range

NHD_61258787 61258787 1982A 100% (23) Additional Exclude Outside Tidal Range

NHD_68753170 68753170 1682 100% (19) Additional Exclude Outside Tidal Range

NHD_68762768 68762768 1797A 100% (136) Additional Exclude Outside Tidal Range

NHD_68792890 68792890 1683 93% (27) Additional Exclude Visual Analysis

NHD_78202437 78202437 2092E 57% (30) Additional Exclude Visual Analysis

NHD_78218087 78218087 2066 100% (19) Additional Exclude Visual Analysis

NHD_78605021 78605021 2041A 33% (6) Additional Exclude Visual Analysis

Sheephead Bayou 122196991 1053B 100% (7) Additional Exclude Visual Analysis

Warner East Bayou 45003513 1848A 60% (5) Additional Exclude Outside Tidal Range

Warner West Bayou 45045361 1848A 50% (8) Additional Exclude Outside Tidal Range a For Class III marine lakes, WBID is the lake WBID; otherwise, the WBID simply includes the corresponding lake object.

F.3.1 Water Quality Data

Summary statistics by lake (geometric mean, median, min, max, 25th percentile, and 75th

percentile) are provided in Table F-3. Box plots for selected parameters are shown in Figure F-6

through Figure F-13. 
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Volume 1 Estuaries

F-15

Table F-3. Water quality data for 50 marine lakes; Q1 = 25th percentile, Q3 = 75th percentile

Class Name NHD Com ID Parametera Count

Geometric 

mean Min Q1 Median Q3 Max

III Freshwater Deer Lake 122178150 Alkalinity 10 3.4 0.3 3.1 5.4 7.4 9

III Marine Alligator Lake 35361059 Alkalinity 8 11.0 0.3 8.4 17.5 30.8 34

III Marine Camp Creek Lake 122178217 Alkalinity 1 7.9 7.9 * 7.9 * 7.9

III Marine Camp Creek Lake 122178347 Alkalinity 13 8.6 3.4 4.6 10 14 24

III Marine Draper Lake 35361005 Alkalinity 8 55.3 35 42.8 56.5 69.5 78

III Marine Morris Lake 35362925 Alkalinity 5 0.5 0.3 0.4 0.5 0.5 0.5

III Marine Powell Lake 122196984 Alkalinity 1 87.0 87 * 87 * 87

III Marine Stalworth Lake 35362961 Alkalinity 10 11.5 6.9 7.3 9.7 18.5 26

III Marine Western Lake 122170304 Alkalinity 10 41.2 22 27.8 49.5 55.3 56

Additional Grass Lake 35357067 Alkalinity 8 78.1 30 77.3 92 94 96

Additional Lake Maggiore 68768614 Alkalinity 330 10.0 0.5 0.5 101 127.9 160.8

Additional Lake Placid 117030825 Alkalinity 4 177.9 169 170.3 177.5 186.3 188

Additional Maule Lake 138374706 Alkalinity 9 192.2 135 177.5 201 214 230

Additional Mud Bay 117066915 Alkalinity 3 185.0 182 182 185 188 188

Additional NHD_125257161 125257161 Alkalinity 1 99.0 99 * 99 * 99

Additional NHD_138374640 138374640 Alkalinity 4 163.4 129 136.3 169.5 190 193

Additional NHD_35361231 35361231 Alkalinity 10 24.6 14 20.5 27 30.3 31

Additional NHD_58671383 58671383 Alkalinity 12 127.9 117 122 128 133.8 144

Additional NHD_78196995 78196995 Alkalinity 2 145.5 145 * 145.5 * 146

Additional Peck Lake 138364367 Alkalinity 3 91.3 83.8 83.8 85.3 106.4 106.4

Additional Pippin Lake 35357089 Alkalinity 1 33.0 33 * 33 * 33

Additional Tarpon Creek 135209949 Alkalinity 1 164.0 164 * 164 * 164

Additional Tee Lake 41221821 Alkalinity 9 26.1 15 19.5 27 36.5 39

Additional Wicker Lakes 41221785 Alkalinity 3 26.5 21 21 24 37 37

III Freshwater Deer Lake 122178150 Chloride 14 20.9 12 13 14 31 150

III Marine Alligator Lake 35361059 Chloride 9 398.3 55 83.5 130 3000 4300

III Marine Camp Creek Lake 122178347 Chloride 14 325.6 54 197.5 240 767.5 1800

III Marine Draper Lake 35361005 Chloride 9 8872.9 5900 6400 9000 11500 14000

III Marine Morris Lake 35362925 Chloride 10 574.2 31 722.5 780 842.5 910

III Marine Powell Lake 122196984 Chloride 2 13000.0 13000 * 13000 * 13000

III Marine Stalworth Lake 35362961 Chloride 10 249.3 37 39.8 522 1675 2200

III Marine Western Lake 122170304 Chloride 10 3585.1 1700 2025 4400 5400 5900

Additional Grass Lake 35357067 Chloride 9 10710.0 2500 10400 13000 14500 15000

Additional Lake Maggiore 68768614 Chloride 311 737.7 110 465 778 1260 3420

Additional Maule Lake 138374706 Chloride 13 150.1 14 66.5 86 297.5 3240

Additional Mud Bay 117066915 Chloride 3 8444.7 7700 7700 7900 9900 9900

Additional NHD_116995331 116995331 Chloride 37 6009.5 28.1 5450 9200 11700 18300

Additional NHD_125257161 125257161 Chloride 1 2000.0 2000 * 2000 * 2000

Additional NHD_35361231 35361231 Chloride 10 632.3 170 207.5 955 2000 2300

Additional NHD_58671383 58671383 Chloride 12 7774.6 1.5 16000 17000 18000 19000

Additional NHD_78196995 78196995 Chloride 2 14000.0 14000 * 14000 * 14000

Additional Peck Lake 138364367 Chloride 3 17863.2 15345 15345 18991 19560 19560

Additional Pippin Lake 35357089 Chloride 1 3400.0 3400 * 3400 * 3400

Additional Tarpon Creek 135209949 Chloride 1 4000.0 4000 * 4000 * 4000

Additional Tee Lake 41221821 Chloride 10 1071.3 390 427.5 1350 1975 3400

Additional Wicker Lakes 41221785 Chloride 4 1048.0 400 445 940 3325 4000

III Freshwater Deer Lake 122178150 Chlorophyll 283 5.0 0.5 3 5 7 38

III Marine Alligator Lake 35361059 Chlorophyll 163 3.0 1 1 2 6 51
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Volume 1 Estuaries

F-16

Class Name NHD Com ID Parametera Count

Geometric 

mean Min Q1 Median Q3 Max

III Marine Big Redfish Lake 35361021 Chlorophyll 262 4.1 1 3 4 6 34

III Marine Camp Creek Lake 122178217 Chlorophyll 467 2.9 0.5 2 3 5 43

III Marine Camp Creek Lake 122178347 Chlorophyll 239 3.3 0.5 2 3 6 37

III Marine Draper Lake 35361005 Chlorophyll 115 6.0 2 3 6 10 27

III Marine Eastern Lake 122178124 Chlorophyll 79 5.0 1 3 5 8 27

III Marine Eastern Lake 122178211 Chlorophyll 408 3.0 1 2 3 4 41

III Marine Little Redfish 

Lake

35361065 Chlorophyll 97 2.8 1 1 3 6 28

III Marine Morris Lake 35362925 Chlorophyll 125 2.1 1 1 2 3 20

III Marine Oyster Lake 35361013 Chlorophyll 90 2.7 0.5 1 3 5 31

III Marine Powell Lake 122196984 Chlorophyll 722 3.6 1 3 4 5 21

III Marine Stalworth Lake 35362961 Chlorophyll 113 2.8 1 1 3 5 14

III Marine Western Lake 122170304 Chlorophyll 654 2.4 0.5 1 2 4 23

Additional Grass Lake 35357067 Chlorophyll 1 8.0 8 * 8 * 8

Additional Johnson Bayou 122176127 Chlorophyll 6 6.7 3.5 4 5.5 12.5 27

Additional Lake Earl 35358103 Chlorophyll 39 13.5 3 7 11 26 107

Additional Lake Maggiore 68768614 Chlorophyll 83 168.4 52.4 132 175 231 351.9

Additional NHD_138374640 138374640 Chlorophyll 4 3.8 3.2 3.2 3.5 4.9 5.2

Additional NHD_138376283 138376283 Chlorophyll 8 0.7 0.5 0.5 0.5 1.1 1.5

Additional NHD_138376288 138376288 Chlorophyll 1 0.5 0.5 * 0.5 * 0.5

Additional NHD_78673003 78673003 Chlorophyll 9 17.5 9 10.5 13 38.5 44

Additional Peck Lake 138364367 Chlorophyll 115 6.7 0.7 4.8 6.2 9.1 30.8

Additional Pippin Lake 35357089 Chlorophyll 1 0.9 0.9 * 0.9 * 0.9

Additional Tarkiln Bayou 41224219 Chlorophyll 12 2.8 2.5 2.5 2.5 2.5 9.1

Additional Tarpon Creek 135209949 Chlorophyll 151 5.5 0.5 3.1 6.3 9.6 38.4

Additional Tee Lake 41221821 Chlorophyll 11 6.9 2.5 2.5 2.5 15 220

Additional Wicker Lakes 41221785 Chlorophyll 6 7.6 2.5 2.5 2.5 65.4 89

III Freshwater Deer Lake 122178150 Chlorophyll

Corrected

9 0.6 0.5 0.5 0.5 0.5 2.4

III Marine Alligator Lake 35361059 Chlorophyll

Corrected

4 10.2 4.6 6.2 11.5 16.5 18

III Marine Camp Creek Lake 122178347 Chlorophyll

Corrected

12 1.8 0.5 0.5 2.4 4.1 5.3

III Marine Draper Lake 35361005 Chlorophyll

Corrected

8 3.0 2.1 2.1 2.4 4.4 7.4

III Marine Eastern Lake 122178124 Chlorophyll

Corrected

1 0.5 0.5 * 0.5 * 0.5

III Marine Eastern Lake 122178211 Chlorophyll

Corrected

1 0.5 0.5 * 0.5 * 0.5

III Marine Morris Lake 35362925 Chlorophyll

Corrected

8 2.1 0.5 2.3 2.5 2.5 3.1

III Marine Powell Lake 122196984 Chlorophyll

Corrected

3 4.0 3.2 3.2 4.2 4.8 4.8

III Marine Stalworth Lake 35362961 Chlorophyll

Corrected

7 11.7 6.7 7.1 11 13 34

III Marine Western Lake 122170304 Chlorophyll

Corrected

1 3.9 3.9 * 3.9 * 3.9

Additional Grass Lake 35357067 Chlorophyll

Corrected

8 4.8 3 3.2 5 6.5 9

Additional Johnson Bayou 122176127 Chlorophyll

Corrected

6 6.3 3.3 3.8 5.2 12.1 26.7
Technical Support Document for U.S. EPA’s Proposed Rule for Numeric Nutrient Criteria,

Volume 1 Estuaries

F-17

Class Name NHD Com ID Parametera Count

Geometric 

mean Min Q1 Median Q3 Max

Additional Lake Maggiore 68768614 Chlorophyll

Corrected

338 75.2 0.5 48.9 70.6 114 656

Additional Lake Placid 117030825 Chlorophyll

Corrected

6 0.5 0.5 0.5 0.5 0.6 0.9

Additional Loughman Lake 107777621 Chlorophyll

Corrected

1 43.0 43 * 43 * 43

Additional Mud Bay 117066915 Chlorophyll

Corrected

3 1.0 0.9 0.9 1 1.3 1.3

Additional NHD_107712341 107712341 Chlorophyll

Corrected

1 48.0 48 * 48 * 48

Additional NHD_116995331 116995331 Chlorophyll

Corrected

26 5.8 2.2 3 6.6 9.5 18.4

Additional NHD_125257161 125257161 Chlorophyll

Corrected

1 4.0 4 * 4 * 4

Additional NHD_138374640 138374640 Chlorophyll

Corrected

4 3.4 2.9 2.9 3.1 4.3 4.6

Additional NHD_138376288 138376288 Chlorophyll

Corrected

1 0.5 0.5 * 0.5 * 0.5

Additional NHD_35361231 35361231 Chlorophyll

Corrected

8 5.9 2.3 3.6 5.7 11.3 13

Additional NHD_58671383 58671383 Chlorophyll

Corrected

9 1.3 0.5 0.5 0.7 5.4 24

Additional NHD_78196995 78196995 Chlorophyll

Corrected

2 32.5 31 * 32.5 * 34

Additional NHD_78216111 78216111 Chlorophyll

Corrected

43 10.2 0.5 7 13 33.3 81.2

Additional NHD_78673003 78673003 Chlorophyll

Corrected

3 22.2 6.1 6.1 31.4 56.8 56.8

Additional Peck Lake 138364367 Chlorophyll

Corrected

112 5.8 1 4 5.6 8.3 28.1

Additional Red Lake 61269171 Chlorophyll

Corrected

6 10.0 3.7 4.4 13.2 18 20.3

Additional Salt Lake 107712397 Chlorophyll

Corrected

1 46.0 46 * 46 * 46

Additional Tarkiln Bayou 41224219 Chlorophyll

Corrected

12 3.2 2.5 2.5 2.5 4.7 8.5

Additional Tarpon Creek 135209949 Chlorophyll

Corrected

1 4.9 4.9 * 4.9 * 4.9

Additional Tee Lake 41221821 Chlorophyll

Corrected

11 5.1 2.5 2.5 2.5 3.2 200

Additional Wicker Lakes 41221785 Chlorophyll

Corrected

6 7.3 2.5 2.5 2.5 56.8 78

III Freshwater Deer Lake 122178150 Color 14 104.0 75 80 100 100 300

III Marine Alligator Lake 35361059 Color 8 170.7 100 112.5 180 237.5 300

III Marine Camp Creek Lake 122178347 Color 14 82.9 50 50 90 112.5 200

III Marine Draper Lake 35361005 Color 9 42.9 20 35 40 65 80

III Marine Morris Lake 35362925 Color 10 79.2 50 57.5 60 112.5 200

III Marine Powell Lake 122196984 Color 3 16.5 10 10 15 30 30

III Marine Stalworth Lake 35362961 Color 9 64.5 40 45 60 100 100

III Marine Western Lake 122170304 Color 10 38.6 15 20 30 100 150

Additional Grass Lake 35357067 Color 9 21.5 15 15 20 30 40

Additional Lake Maggiore 68768614 Color 272 39.3 5 30 40 50 120
Technical Support Document for U.S. EPA’s Proposed Rule for Numeric Nutrient Criteria,

Volume 1 Estuaries

F-18

Class Name NHD Com ID Parametera Count

Geometric 

mean Min Q1 Median Q3 Max

Additional Lake Placid 117030825 Color 5 75.3 60 60 70 100 120

Additional Loughman Lake 107777621 Color 1 150.0 150 * 150 * 150

Additional Maule Lake 138374706 Color 297 0.2 0 20 34 50 74

Additional Mud Bay 117066915 Color 3 146.6 140 140 150 150 150

Additional NHD_107712341 107712341 Color 1 60.0 60 * 60 * 60

Additional NHD_116995331 116995331 Color 39 38.4 15.6 25.2 33.1 63.9 133

Additional NHD_125257161 125257161 Color 1 5.0 5 * 5 * 5

Additional NHD_125548403 125548403 Color 12 116.6 30 92.5 135 195 200

Additional NHD_138376283 138376283 Color 10 26.7 20 25 25 30 35

Additional NHD_138376288 138376288 Color 2 20.0 10 * 25 * 40

Additional NHD_35361231 35361231 Color 10 110.7 50 72.5 90 225 300

Additional NHD_58671383 58671383 Color 12 26.8 10 20 30 40 50

Additional NHD_78196995 78196995 Color 2 100.0 100 * 100 * 100

Additional NHD_78216111 78216111 Color 43 32.0 7 20 35 50 128

Additional NHD_78673003 78673003 Color 11 60.4 20 40 50 80 200

Additional Peck Lake 138364367 Color 134 20.2 0.5 12 19 36 112

Additional Pippin Lake 35357089 Color 1 50.0 50 * 50 * 50

Additional Red Lake 61269171 Color 6 58.6 30 33 65 95 110

Additional Salt Lake 107712397 Color 1 200.0 200 * 200 * 200

Additional Tarkiln Bayou 41224219 Color 18 49.5 20 28.8 40 90 250

Additional Tarpon Creek 135209949 Color 1 120.0 120 * 120 * 120

Additional Tee Lake 41221821 Color 11 81.8 40 60 100 110 140

Additional Wicker Lakes 41221785 Color 6 85.0 40 62.5 90 125 140

III Freshwater Deer Lake 122178150 DO 250 6.3 1.1 5.7 7 8.5 11.1

III Marine Alligator Lake 35361059 DO 272 3.5 0.1 2 5.6 7.7 14.6

III Marine Big Redfish Lake 35361021 DO 305 4.2 0.2 3.5 5.8 7.3 10.8

III Marine Camp Creek Lake 122178217 DO 168 3.8 0.2 2.9 6 7.3 10.9

III Marine Camp Creek Lake 122178347 DO 102 5.4 0.2 5 6.4 7.5 10.1

III Marine Draper Lake 35361005 DO 235 5.1 0.3 4.9 6.3 7.5 12.6

III Marine Eastern Lake 122178124 DO 243 5.0 0.3 4.3 5.9 7.4 11.1

III Marine Eastern Lake 122178211 DO 334 5.0 0.3 4.3 6 7.7 10.1

III Marine Little Redfish 

Lake

35361065 DO 277 5.4 0.2 5.3 6.5 8 11.8

III Marine Morris Lake 35362925 DO 321 5.8 0.4 5.8 6.8 8.5 11

III Marine Oyster Lake 35361013 DO 227 6.5 0.2 5.9 7 8.1 12

III Marine Powell Lake 122196984 DO 205 5.4 0.3 4.8 6 7.2 11

III Marine Stalworth Lake 35362961 DO 285 5.9 0.1 5.7 7.2 8.7 11.3

III Marine Western Lake 122170304 DO 877 5.2 0.2 4.8 6 7.5 11.4

Additional Grass Lake 35357067 DO 10 6.2 5 5.4 6.4 7.1 8

Additional Johnson Bayou 122176127 DO 5 6.4 4.6 4.9 5.9 9.4 12.5

Additional Lake Earl 35358103 DO 145 5.6 0.9 4.6 6.3 7.3 9.1

Additional Lake Maggiore 68768614 DO 325 6.9 0.4 6 7.3 8.7 13.6

Additional Lake Placid 117030825 DO 6 5.5 2.5 3.3 5.9 9.1 9.4

Additional Loughman Lake 107777621 DO 2 4.0 2.3 * 4.6 * 6.9

Additional Maule Lake 138374706 DO 973 4.3 0.7 3.5 4.6 5.6 8.5

Additional Mud Bay 117066915 DO 3 3.4 2.5 2.5 3.8 4.2 4.2

Additional NHD_107712341 107712341 DO 2 6.7 5.8 * 6.7 * 7.7

Additional NHD_122175873 122175873 DO 2 10.0 10 * 10 * 10

Additional NHD_125253062 125253062 DO 17 6.1 4.6 5.5 5.8 6.7 8.6

Additional NHD_125257161 125257161 DO 2 5.6 4 * 5.9 * 7.8
Technical Support Document for U.S. EPA’s Proposed Rule for Numeric Nutrient Criteria,

Volume 1 Estuaries

F-19

Class Name NHD Com ID Parametera Count

Geometric 

mean Min Q1 Median Q3 Max

Additional NHD_125271453 125271453 DO 215 6.1 0.4 5.5 6.8 7.9 12.2

Additional NHD_125548403 125548403 DO 11 5.7 2.4 4.7 5.4 8.3 9.1

Additional NHD_129758638 129758638 DO 266 7.7 0.1 7 8.2 9.3 12.4

Additional NHD_135208276 135208276 DO 6 5.5 4.3 4.5 5.8 6.4 6.5

Additional NHD_138365388 138365388 DO 52 5.1 3.2 4.4 5.2 5.9 7.4

Additional NHD_138374640 138374640 DO 15 2.8 0.2 1.7 4.1 6 7.2

Additional NHD_138376274 138376274 DO 6 5.2 4.2 4.4 5.6 6 6.1

Additional NHD_138376279 138376279 DO 18 6.1 4.5 5.5 5.8 6.4 8.3

Additional NHD_138376283 138376283 DO 916 6.6 2.1 5.8 6.7 7.5 12.5

Additional NHD_138376288 138376288 DO 342 6.4 0.2 6.1 6.6 7.2 12.5

Additional NHD_35361231 35361231 DO 14 5.4 1.4 4.6 6.9 7.9 9.4

Additional NHD_58671383 58671383 DO 13 4.5 2.5 3.4 4 6.9 8.7

Additional NHD_78196995 78196995 DO 1 1.7 1.7 * 1.7 * 1.7

Additional NHD_78216111 78216111 DO 49 4.2 1 3.6 4.8 5.5 11.6

Additional NHD_78673003 78673003 DO 13 6.7 4.5 5.9 6.7 7.7 9.1

Additional NHD_83012015 83012015 DO 78 6.7 1.3 5.8 7.6 9 12.6

Additional Peck Lake 138364367 DO 287 5.7 3 5 5.8 6.7 9.9

Additional Pippin Lake 35357089 DO 255 6.9 1.4 6.2 7.5 8.6 12.2

Additional Red Lake 61269171 DO 16 3.3 2.4 2.6 3 4.2 5.1

Additional Salt Lake 107712397 DO 2 5.9 4.9 * 6 * 7

Additional Tarkiln Bayou 41224219 DO 17 7.7 5.8 6.3 8.2 9 10

Additional Tarpon Creek 135209949 DO 237 5.6 0.1 5.4 6.8 8.1 10.5

Additional Tee Lake 41221821 DO 11 7.7 4.1 6.8 7.3 10.1 10.7

Additional Wicker Lakes 41221785 DO 6 4.1 0.4 2.8 7.1 8.2 10.3

III Freshwater Deer Lake 122178150 TN 289 0.4 0.3 0.4 0.4 0.5 0.9

III Marine Alligator Lake 35361059 TN 176 0.6 0.2 0.5 0.6 0.7 1.9

III Marine Big Redfish Lake 35361021 TN 263 0.3 0 0.2 0.3 0.4 0.8

III Marine Camp Creek Lake 122178217 TN 464 0.4 0.2 0.3 0.4 0.4 0.9

III Marine Camp Creek Lake 122178347 TN 251 0.4 0.2 0.3 0.4 0.5 1

III Marine Draper Lake 35361005 TN 125 0.4 0.2 0.3 0.4 0.6 1.1

III Marine Eastern Lake 122178124 TN 82 0.3 0.1 0.3 0.3 0.4 0.7

III Marine Eastern Lake 122178211 TN 411 0.2 0.1 0.2 0.2 0.3 0.6

III Marine Little Redfish 

Lake

35361065 TN 103 0.6 0.3 0.5 0.6 0.8 1.2

III Marine Morris Lake 35362925 TN 131 0.6 0.3 0.5 0.6 0.7 1.3

III Marine Oyster Lake 35361013 TN 99 0.7 0.5 0.6 0.6 0.7 1.2

III Marine Powell Lake 122196984 TN 706 0.4 0.1 0.3 0.4 0.5 1.9

III Marine Stalworth Lake 35362961 TN 132 0.3 0.1 0.2 0.3 0.4 1.2

III Marine Western Lake 122170304 TN 785 0.3 0.1 0.2 0.3 0.4 4

Additional Grass Lake 35357067 TN 9 0.5 0.2 0.5 0.5 0.7 0.8

Additional Johnson Bayou 122176127 TN 6 0.5 0.4 0.4 0.6 0.7 0.8

Additional Lake Earl 35358103 TN 36 0.5 0.2 0.4 0.5 0.6 1

Additional Lake Maggiore 68768614 TN 277 2.3 0.1 1.6 3 3.7 5.7

Additional Lake Placid 117030825 TN 6 1.1 1 1.1 1.1 1.3 1.3

Additional Maule Lake 138374706 TN 9 1.6 1 1 2 2.2 3

Additional NHD_116995331 116995331 TN 38 0.6 0.3 0.5 0.6 0.8 1.2

Additional NHD_138374640 138374640 TN 5 0.8 0.6 0.7 0.8 0.9 1

Additional NHD_138376274 138376274 TN 2 0.2 0.1 * 0.3 * 0.6

Additional NHD_138376279 138376279 TN 29 0.7 0.2 0.6 0.7 0.9 1.3

Additional NHD_138376288 138376288 TN 1 1.4 1.4 * 1.4 * 1.4
Technical Support Document for U.S. EPA’s Proposed Rule for Numeric Nutrient Criteria,

Volume 1 Estuaries

F-20

Class Name NHD Com ID Parametera Count

Geometric 

mean Min Q1 Median Q3 Max

Additional NHD_35361231 35361231 TN 10 1.1 0.8 1 1.2 1.2 1.5

Additional NHD_58671383 58671383 TN 11 1.1 0.8 0.9 1.1 1.2 1.5

Additional NHD_78216111 78216111 TN 43 1.2 0.2 0.6 1.6 2.4 3.6

Additional NHD_78673003 78673003 TN 22 1.0 0.7 0.9 1 1.1 1.9

Additional Peck Lake 138364367 TN 169 0.6 0.1 0.5 0.7 0.9 1.4

Additional Red Lake 61269171 TN 6 0.6 0.5 0.5 0.6 0.8 1

Additional Tarkiln Bayou 41224219 TN 16 0.6 0.3 0.5 0.6 1 1.1

Additional Tarpon Creek 135209949 TN 75 0.9 0.1 0.6 0.9 1.3 2.1

Additional Tee Lake 41221821 TN 12 1.1 0.8 0.9 1 1.3 1.6

Additional Wicker Lakes 41221785 TN 6 1.0 0.8 0.9 1.1 1.2 1.2

III Freshwater Deer Lake 122178150 TP 285 0.0 0 0 0 0 0

III Marine Alligator Lake 35361059 TP 173 0.0 0 0 0 0 0

III Marine Big Redfish Lake 35361021 TP 264 0.0 0 0 0 0 0

III Marine Camp Creek Lake 122178217 TP 467 0.0 0 0 0 0 0

III Marine Camp Creek Lake 122178347 TP 248 0.0 0 0 0 0 0

III Marine Draper Lake 35361005 TP 122 0.0 0 0 0 0 0.1

III Marine Eastern Lake 122178124 TP 81 0.0 0 0 0 0 0

III Marine Eastern Lake 122178211 TP 409 0.0 0 0 0 0 0

III Marine Little Redfish 

Lake

35361065 TP 108 0.0 0 0 0 0 0

III Marine Morris Lake 35362925 TP 135 0.0 0 0 0 0 0

III Marine Oyster Lake 35361013 TP 99 0.1 0 0.1 0.1 0.1 0.2

III Marine Powell Lake 122196984 TP 706 0.0 0 0 0 0 0.5

III Marine Stalworth Lake 35362961 TP 128 0.0 0 0 0 0 0

III Marine Western Lake 122170304 TP 784 0.0 0 0 0 0 0.6

Additional Grass Lake 35357067 TP 2 0.0 0 * 0 * 0

Additional Johnson Bayou 122176127 TP 4 0.0 0 0 0 0 0

Additional Lake Earl 35358103 TP 36 0.0 0 0 0 0.1 0.1

Additional Lake Maggiore 68768614 TP 423 0.1 0 0.1 0.1 0.1 0.3

Additional Lake Placid 117030825 TP 3 0.1 0.1 0.1 0.1 0.1 0.1

Additional Loughman Lake 107777621 TP 1 0.1 0.1 * 0.1 * 0.1

Additional Maule Lake 138374706 TP 275 0.0 0 0 0 0 0

Additional Mud Bay 117066915 TP 3 0.1 0.1 0.1 0.1 0.1 0.1

Additional NHD_107712341 107712341 TP 1 0.1 0.1 * 0.1 * 0.1

Additional NHD_116995331 116995331 TP 19 0.0 0 0 0 0.1 0.1

Additional NHD_125257161 125257161 TP 1 0.0 0 * 0 * 0

Additional NHD_138374640 138374640 TP 2 0.0 0 * 0 * 0

Additional NHD_138376274 138376274 TP 2 0.1 0 * 0.1 * 0.2

Additional NHD_138376279 138376279 TP 30 0.0 0 0 0 0 0.1

Additional NHD_138376283 138376283 TP 6 0.0 0 0 0 0 0

Additional NHD_35361231 35361231 TP 8 0.1 0 0 0.1 0.1 0.2

Additional NHD_58671383 58671383 TP 10 0.1 0.1 0.1 0.1 0.1 0.1

Additional NHD_78196995 78196995 TP 2 0.1 0.1 * 0.1 * 0.1

Additional NHD_78216111 78216111 TP 40 0.0 0 0 0.1 0.1 0.2

Additional NHD_78673003 78673003 TP 22 0.2 0.1 0.2 0.3 0.3 0.4

Additional Peck Lake 138364367 TP 131 0.1 0 0.1 0.1 0.1 0.4

Additional Pippin Lake 35357089 TP 1 0.0 0 * 0 * 0

Additional Red Lake 61269171 TP 5 0.3 0.3 0.3 0.3 0.3 0.4

Additional Salt Lake 107712397 TP 1 0.1 0.1 * 0.1 * 0.1

Additional Tarkiln Bayou 41224219 TP 15 0.0 0 0 0 0 0
Technical Support Document for U.S. EPA’s Proposed Rule for Numeric Nutrient Criteria,

Volume 1 Estuaries

F-21

Class Name NHD Com ID Parametera Count

Geometric 

mean Min Q1 Median Q3 Max

Additional Tarpon Creek 135209949 TP 167 0.0 0 0 0 0 0.1

Additional Tee Lake 41221821 TP 6 0.0 0 0 0 0.1 0.1

Additional Wicker Lakes 41221785 TP 5 0.0 0 0 0 0.1 0.1

III Freshwater Deer Lake 122178150 Salinity 237 0.1 0 0 0.1 0.3 9.8

III Marine Alligator Lake 35361059 Salinity 266 2.0 0 0.7 2.3 10.3 26.8

III Marine Big Redfish Lake 35361021 Salinity 305 5.2 0.3 1.5 8.4 19.1 30.6

III Marine Camp Creek Lake 122178217 Salinity 172 5.8 0.2 2 4.9 25.1 34

III Marine Camp Creek Lake 122178347 Salinity 88 2.0 0 0.6 2.1 7.4 31.7

III Marine Draper Lake 35361005 Salinity 237 7.5 0.9 3 11.7 15.5 30.6

III Marine Eastern Lake 122178124 Salinity 243 9.9 2.3 5.9 9.7 17.4 31

III Marine Eastern Lake 122178211 Salinity 334 12.6 2.8 8.2 14.8 20.2 33.1

III Marine Little Redfish 

Lake

35361065 Salinity 277 0.7 0 0.1 1.2 7.3 18.8

III Marine Morris Lake 35362925 Salinity 311 0.7 0.1 0.1 2.1 2.9 16.4

III Marine Oyster Lake 35361013 Salinity 227 0.8 0.1 0.2 1.5 3.4 7.8

III Marine Powell Lake 122196984 Salinity 504 10.4 0 14.3 21 25.9 34

III Marine Stalworth Lake 35362961 Salinity 284 2.7 0.1 1.2 2.9 5.4 19.7

III Marine Western Lake 122170304 Salinity 868 9.0 0 6.2 9 15.6 32.8

Additional Grass Lake 35357067 Salinity 10 16.6 4.7 14.3 21.5 24.3 25.2

Additional Lake Earl 35358103 Salinity 146 21.1 4.2 18.2 22.5 26.2 31.1

Additional Lake Maggiore 68768614 Salinity 214 1.9 0.6 1.3 1.9 2.7 8.4

Additional Loughman Lake 107777621 Salinity 2 3.4 3.4 * 3.4 * 3.4

Additional Maule Lake 138374706 Salinity 864 0.5 0 7.7 19.9 29.9 36.6

Additional NHD_107712341 107712341 Salinity 2 4.3 4.3 * 4.3 * 4.3

Additional NHD_122175873 122175873 Salinity 13 10.3 4 6 12 19 22

Additional NHD_125253062 125253062 Salinity 16 16.0 14.8 14.8 15.7 17.2 18.5

Additional NHD_125256476 125256476 Salinity 16 7.1 1.4 4 6.6 17.5 34.1

Additional NHD_125257161 125257161 Salinity 2 3.6 3.6 * 3.6 * 3.6

Additional NHD_125271453 125271453 Salinity 267 22.3 13.3 19.2 21.8 26.5 36.8

Additional NHD_125548403 125548403 Salinity 11 7.0 0.2 5 12.3 20.7 29.4

Additional NHD_129758638 129758638 Salinity 314 2.5 0 9.7 16.9 23.2 33

Additional NHD_135208276 135208276 Salinity 6 13.1 9.3 10.4 11.9 17.1 24.7

Additional NHD_138365388 138365388 Salinity 52 13.2 2 8.2 16.7 23.8 30

Additional NHD_138374640 138374640 Salinity 15 19.7 4.9 13.8 24.3 31.5 32.1

Additional NHD_138376279 138376279 Salinity 21 0.1 0 7.9 25.8 27.4 31.8

Additional NHD_138376283 138376283 Salinity 918 3.3 0 1.5 8.7 17.9 42.8

Additional NHD_138376288 138376288 Salinity 144 0.0 0 0.3 0.8 2.9 29.4

Additional NHD_35361231 35361231 Salinity 15 1.1 0.3 0.4 0.4 3.6 4.1

Additional NHD_58671383 58671383 Salinity 13 28.6 15 27.5 29.6 32.7 36.4

Additional NHD_78216111 78216111 Salinity 48 21.4 0.1 19.2 31 35 50.4

Additional NHD_83012015 83012015 Salinity 111 31.1 15.9 28.7 34.6 35.9 40.2

Additional Peck Lake 138364367 Salinity 192 25.5 8 22.2 28.1 31.7 35.9

Additional Pippin Lake 35357089 Salinity 362 14.4 0.1 11.9 16.9 22.4 31.9

Additional Salt Lake 107712397 Salinity 2 2.8 2.8 * 2.8 * 2.8

Additional Tarkiln Bayou 41224219 Salinity 10 8.7 3.4 3.5 13.4 15.7 21.8

Additional Tarpon Creek 135209949 Salinity 212 10.6 4.2 7.6 10.6 15 27.4

Additional Tee Lake 41221821 Salinity 1 1.3 1.3 * 1.3 * 1.3

Additional Wicker Lakes 41221785 Salinity 1 1.2 1.2 * 1.2 * 1.2

III Freshwater Deer Lake 122178150 Specific 

Conductance

7 327.3 69 73 117 6053 7800
Technical Support Document for U.S. EPA’s Proposed Rule for Numeric Nutrient Criteria,

Volume 1 Estuaries

F-22

Class Name NHD Com ID Parametera Count

Geometric 

mean Min Q1 Median Q3 Max

III Marine Alligator Lake 35361059 Specific 

Conductance

16 2554.7 220 422 2422.5 26411 37122

III Marine Camp Creek Lake 122178217 Specific 

Conductance

1 3870.0 3870 * 3870 * 3870

III Marine Camp Creek Lake 122178347 Specific 

Conductance

14 1834.7 230 754.5 1084 5624.3 27550

III Marine Draper Lake 35361005 Specific 

Conductance

10 27079.4 17175 21303 26352 34806 42616

III Marine Eastern Lake 122178124 Specific 

Conductance

1 1003.0 1003 * 1003 * 1003

III Marine Eastern Lake 122178211 Specific 

Conductance

1 705.0 705 * 705 * 705

III Marine Morris Lake 35362925 Specific 

Conductance

24 908.1 80 108.8 2556.5 2786.3 3035

III Marine Powell Lake 122196984 Specific 

Conductance

6 26070.0 16600 18528 26650 37325 37400

III Marine Stalworth Lake 35362961 Specific 

Conductance

14 1033.8 175 191.5 1827 5882 7237

III Marine Western Lake 122170304 Specific 

Conductance

16 12774.3 5183 7576.8 15509 17416 29240

Additional Grass Lake 35357067 Specific 

Conductance

9 29784.4 8395 29069 36700 38311 39472

Additional Johnson Bayou 122176127 Specific 

Conductance

5 36399.5 29400 30400 35760 43995 44144

Additional Lake Maggiore 68768614 Specific 

Conductance

337 2755.9 647 1762 2816 4345 14500

Additional Lake Placid 117030825 Specific 

Conductance

6 27784.7 11474 16708 26507 55925 55995

Additional Loughman Lake 107777621 Specific 

Conductance

3 6220.5 6150 6150 6242 6270 6270

Additional Maule Lake 138374706 Specific 

Conductance

936 13043.9 10.9 8977.5 27700 45100 55100

Additional Mud Bay 117066915 Specific 

Conductance

6 24848.9 22700 22750 23965 28096 28400

Additional NHD_107712341 107712341 Specific 

Conductance

3 7757.0 7740 7740 7741 7790 7790

Additional NHD_125256476 125256476 Specific 

Conductance

16 12255.0 2682 7220.3 11720 28675 51799

Additional NHD_125257161 125257161 Specific 

Conductance

3 6555.0 6420 6420 6616 6631 6631

Additional NHD_125548403 125548403 Specific 

Conductance

11 8505.8 466 552 20100 33500 45300

Additional NHD_135208276 135208276 Specific 

Conductance

6 21829.9 16000 17650 20000 27775 38800

Additional NHD_138374640 138374640 Specific 

Conductance

15 32694.2 8916 22943 38367 48439 49169

Additional NHD_138376274 138376274 Specific 

Conductance

6 59635.9 49500 52200 62100 66800 66800

Additional NHD_138376279 138376279 Specific 

Conductance

22 20693.4 27 13810 40600 43200 48500

Additional NHD_138376283 138376283 Specific 

Conductance

927 8086.1 0.8 2670 15100 30100 63300
Technical Support Document for U.S. EPA’s Proposed Rule for Numeric Nutrient Criteria,

Volume 1 Estuaries

F-23

Class Name NHD Com ID Parametera Count

Geometric 

mean Min Q1 Median Q3 Max

Additional NHD_138376288 138376288 Specific 

Conductance

263 1591.9 27 678 1082 3978 46000

Additional NHD_35361231 35361231 Specific 

Conductance

15 1551.5 7.9 805 876 6620 7398

Additional NHD_58671383 58671383 Specific 

Conductance

13 44978.9 29594 42678 46098 50080 55144

Additional NHD_78196995 78196995 Specific 

Conductance

3 38160.6 37000 37000 37000 40592 40592

Additional NHD_78216111 78216111 Specific 

Conductance

48 33816.8 128.6 30923 47480 53100 73470

Additional NHD_78673003 78673003 Specific 

Conductance

13 12236.7 449 9750 22500 28771 38016

Additional Peck Lake 138364367 Specific 

Conductance

235 40618.7 13811 36081 44209 48500 54275

Additional Pippin Lake 35357089 Specific 

Conductance

2 12286.1 11400 * 12321 * 13241

Additional Red Lake 61269171 Specific 

Conductance

16 39553.3 25490 34268 40470 47940 48620

Additional Salt Lake 107712397 Specific 

Conductance

3 5133.9 5040 5040 5170 5193 5193

Additional Tarkiln Bayou 41224219 Specific 

Conductance

18 19630.0 6248 16302 24395 30525 34900

Additional Tarpon Creek 135209949 Specific 

Conductance

3 12855.4 12300 12300 13121 13164 13164

Additional Tee Lake 41221821 Specific 

Conductance

11 4311.6 1503 1633 4990 8416 10607

Additional Wicker Lakes 41221785 Specific 

Conductance

6 4976.3 1507 2121.3 6584.5 9747.3 12400

III Freshwater Deer Lake 122178150 Temperature 250 20.8 10.3 16.7 22.4 27.1 32.8

III Marine Alligator Lake 35361059 Temperature 273 21.5 10.3 17.4 22.4 27.6 34.1

III Marine Big Redfish Lake 35361021 Temperature 311 23.1 10.6 19.2 24.6 29.3 34.9

III Marine Camp Creek Lake 122178217 Temperature 172 22.7 10.1 18.8 23.7 28.2 33.4

III Marine Camp Creek Lake 122178347 Temperature 102 22.1 9.4 18.8 22.9 28.5 32.6

III Marine Draper Lake 35361005 Temperature 237 23.1 9.3 18.7 24.9 29.4 34.2

III Marine Eastern Lake 122178124 Temperature 244 23.0 10.9 17.7 25.3 30.5 34.4

III Marine Eastern Lake 122178211 Temperature 335 22.7 9.2 18.4 24.1 29.3 33.3

III Marine Little Redfish 

Lake

35361065 Temperature 277 21.5 11.2 16.1 22.9 28 34.3

III Marine Morris Lake 35362925 Temperature 322 21.1 10.6 16.6 22.9 27.1 32.9

III Marine Oyster Lake 35361013 Temperature 232 22.1 11.9 18.5 24.3 27.3 32.9

III Marine Powell Lake 122196984 Temperature 508 21.2 9.7 17 21.5 28 33.8

III Marine Stalworth Lake 35362961 Temperature 291 21.5 8.7 17.6 22.4 28.3 32.9

III Marine Western Lake 122170304 Temperature 878 22.5 9.8 17.7 23.9 29.3 34.4

Additional Grass Lake 35357067 Temperature 9 21.3 14.4 16.4 19.3 31.1 33

Additional Johnson Bayou 122176127 Temperature 5 25.6 14 19.7 30.5 32 32.2

Additional Lake Earl 35358103 Temperature 146 23.4 11.4 19.2 24.6 29.7 35.3

Additional Lake Maggiore 68768614 Temperature 337 24.4 12.7 21.2 25.1 29.4 33

Additional Lake Placid 117030825 Temperature 6 26.8 23.7 24.1 27.9 28.7 29.3

Additional Loughman Lake 107777621 Temperature 2 20.1 19.9 * 20.1 * 20.2

Additional Maule Lake 138374706 Temperature 978 26.1 18.9 23.5 26.3 29 32.4

Additional Mud Bay 117066915 Temperature 3 29.0 28.6 28.6 28.8 29.8 29.8
Technical Support Document for U.S. EPA’s Proposed Rule for Numeric Nutrient Criteria,

Volume 1 Estuaries

F-24

Class Name NHD Com ID Parametera Count

Geometric 

mean Min Q1 Median Q3 Max

Additional NHD_107712341 107712341 Temperature 2 27.6 27.5 * 27.6 * 27.6

Additional NHD_122175873 122175873 Temperature 13 20.3 10 16 20 27.5 33.1

Additional NHD_125253062 125253062 Temperature 17 24.1 18 21 24 28 30

Additional NHD_125256476 125256476 Temperature 16 25.1 17.7 22.4 26.1 28.4 30.4

Additional NHD_125257161 125257161 Temperature 2 31.1 30.7 * 31.1 * 31.6

Additional NHD_125271453 125271453 Temperature 273 22.9 10.7 18.7 24.6 28.6 32

Additional NHD_125548403 125548403 Temperature 35 21.7 13 18.9 22 25.4 32.5

Additional NHD_129758638 129758638 Temperature 319 21.1 8.9 17.5 21.8 27.1 31.6

Additional NHD_135208276 135208276 Temperature 6 27.0 22.4 22.4 29.4 29.9 30.1

Additional NHD_138365388 138365388 Temperature 52 24.8 15 23 26 28 30.5

Additional NHD_138374640 138374640 Temperature 15 28.3 24.4 26.3 28 30.9 31.9

Additional NHD_138376274 138376274 Temperature 6 25.6 23.6 23.7 24.7 27.2 32.5

Additional NHD_138376279 138376279 Temperature 18 25.6 19.3 24.4 25.7 26.9 32.9

Additional NHD_138376283 138376283 Temperature 917 25.0 15 22.1 25.9 28.9 34.5

Additional NHD_138376288 138376288 Temperature 305 26.6 16.9 25.3 27.1 29.2 32.8

Additional NHD_35361231 35361231 Temperature 15 20.2 13.8 14.9 21.7 28.1 29.1

Additional NHD_58671383 58671383 Temperature 13 22.7 8.3 20.2 25.7 29.6 30.7

Additional NHD_78196995 78196995 Temperature 1 29.1 29.1 * 29.1 * 29.1

Additional NHD_78216111 78216111 Temperature 49 25.2 13.9 22.2 26.5 30 32.2

Additional NHD_78673003 78673003 Temperature 13 24.7 17.3 22 26.4 27.7 29

Additional NHD_83012015 83012015 Temperature 115 23.1 12.7 20.9 23.5 27.4 33.3

Additional Peck Lake 138364367 Temperature 289 25.4 14.5 21.6 26.6 29.5 33.4

Additional Pippin Lake 35357089 Temperature 383 19.5 7.5 15.8 20.6 25.8 33

Additional Red Lake 61269171 Temperature 16 30.4 29.2 30.2 30.6 30.8 30.9

Additional Salt Lake 107712397 Temperature 2 20.4 20.1 * 20.5 * 20.8

Additional Tarkiln Bayou 41224219 Temperature 18 20.2 12.4 13.5 21.8 28.1 32.4

Additional Tarpon Creek 135209949 Temperature 224 26.0 13.3 23.4 27.2 30.1 35

Additional Tee Lake 41221821 Temperature 11 21.4 12.2 19.2 26.5 26.7 27.5

Additional Wicker Lakes 41221785 Temperature 6 22.3 12.6 17.2 26.6 27 27.5

a Parameter Units: Alkalinity = mg/L as CaCO3; Chloride = mg/L; Chlorophyll = μg/L; Chlorophyll Corrected = μg/L; Color = PCU; 

DO = mg/L; TN = mg/L; TP = mg/L; Salinity = ppt; Specific Conductance = μS/cm; Temperature = °C

* Quartiles were not calculated due to small sample size (n ≤ 2) 
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Figure F-6. Marine lakes alkalinity

Figure F-7. Marine lakes chl-a 
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Figure F-8. Marine lakes corrected chl-a 

Figure F-9. Marine lakes color
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Figure F-10. Marine lakes DO

Figure F-11. Marine lakes TN
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Figure F-12. Marine lakes TP

Figure F-13. Marine lakes temperature
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F.3.2 303(d) listing

The 50 candidate marine lakes were compared against Florida’s 303(d) list of impaired waters 

for nutrient parameters, including nutrients, chl-a, DO, and biochemical oxygen demand (BOD). 

The 303(d) list was created by updating the September 2, 2009 EPA decision document 

approving FDEP-listed waters with a May 13, 2010 Basin Group 3 update.2

 A December 21, 

2010 EPA decision document updating Group 4 basins was not included in this analysis. WBIDs 

with the following parameters of concern were gathered: nutrients, chl-a, DO, BOD. A tabular 

summary of this analysis by lake class is presented in the main document. Water bodies are listed 

as impaired according to the WBID in Florida. Note that because some of the NHD lakes are 

much smaller than a WBID, the impairment might not refer to the lake itself, in some cases, but 

the WBID might contain the lake. Results are provided in Table F-4. 

Table F-4. Details of lakes listed on FDEP’s 303(d) list

Name NHD Com ID WBID Lake Class Nut Chl-a DO BOD

Deer Lake 122178150 1040A III Freshwater not analyzed due to low salinity levels

Alligator Lake 35361059 959E III Marine - - DO -

Big Redfish Lake 35361021 959I III Marine - - DO -

Camp Creek Lake 122178217 & 

122178347

1027A III Marine Nut. - DO -

Draper Lake 35361005 959D III Marine - - DO -

Eastern Lake 122178124 & 

122178211

1037 III Marine - - DO -

Little Redfish Lake 35361065 959J III Marine - - DO -

Morris Lake 35362925 959 III Marine - - DO -

Oyster Lake 35361013 959C III Marine

Powell Lake 122196984 1055A III Marine - - DO -

Stalworth Lake 35362961 959B III Marine

Western Lake 122170304 1009A III Marine - - DO -

Grass Lake 35357067 759 Additional

Johnson Bayou 122176127 1131 Additional Nut. - DO -

Lake Earl 35358103 874 Additional - - DO -

Lake Maggiore 68768614 1731A Additional Nut. - DO -

Lake Placid 117030825 3259M Additional - - DO -

Loughman Lake 107777621 2978A Additional Nut. - - -

Maule Lake 138374706 3226H1 Additional

Mud Bay 117066915 3259M Additional - - DO -

NHD_107712341 107712341 2978D Additional

NHD_116995331 116995331 3258E1 Additional

NHD_122175873 122175873 1084 Additional - - - -

NHD_125253062 125253062 3044A Additional Nut. - DO -

NHD_125256476 125256476 2963D Additional Nut. - DO -

NHD_125257161 125257161 3044B Additional Nut. - - -

NHD_125271453 125271453 2963D Additional Nut. - DO -

NHD_125548403 125548403 2499 Additional

NHD_129758638 129758638 1239 Additional - - - -

 

2 EPA’s September 2, 2009, Decision Document on Florida’s updated 303(d) List and EPA’s May 13, 2010 Decision Document 

Regarding Florida’s Section 303(d) List Amendments for Basin Group 3. http://www.epa.gov/region4/water/tmdl/florida/. 

Accessed April 2011.
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Name NHD Com ID WBID Lake Class Nut Chl-a DO BOD

NHD_135208276 135208276 3289P Additional - - - -

NHD_138365388 138365388 3226D Additional Nut. Chl-a DO -

NHD_138374640 138374640 3226L Additional

NHD_138376274 138376274 3303B Additional

NHD_138376279 138376279 3303B Additional

NHD_138376283 138376283 3303B1 Additional

NHD_138376288 138376288 3303B1 Additional

NHD_35361231 35361231 959F Additional

NHD_58671383 58671383 1535 Additional - - DO -

NHD_78196995 78196995 2086 Additional

NHD_78216111 78216111 2092G Additional

NHD_78673003 78673003 2056E Additional Nut. Chl-a - -

NHD_83012015 83012015 5003DA Additional - - - -

Peck Lake 138364367 3208A Additional - - DO -

Pippin Lake 35357089 772 Additional

Red Lake 61269171 2018 Additional - - - -

Salt Lake 107712397 2978B Additional Nut. - DO -

Tarkiln Bayou 41224219 945 Additional - - - -

Tarpon Creek 135209949 3289I Additional - - - -

Tee Lake 41221821 784 Additional - - - -

Wicker Lakes 41221785 784 Additional - - - -

Deer Lake is not identified on Florida’s 303(d) list of impaired waters for nutrients, chl-a, or DO; 

9 of the remaining 11 Class III marine lakes (82%) and 15 of 38 additional lakes (39%) were 

impaired for at least one nutrient-related parameter (see Table F-4).

F.3.3 Comparison to Inland Lake Criteria

Water quality data for the 50 candidate marine lakes were compared to the applicable inland 

criteria as specified in the Final Rule (USEPA 2010). On the basis of long-term average color 

and alkalinity data, each lake was assigned a color/alkalinity category according to the 

classifications specified in the Final Rule (for the proposed criteria, see the main document).

When sufficient color and alkalinity data were not available for a lake, the monitoring data were

compared to the range of values that could apply to that lake. 

Inland criteria for lakes are expressed as an annual geometric mean of TN, TP, and chl-a, not to 

be exceeded more than once in a 3-year period. Annual geometric means were calculated for 

each lake-year, and the results are shown in Table F-5. According to those data, the applicable 

criteria or range of criteria were compared to the annual geometric mean for each parameter. 

Monitoring data were available for both chl-a and chl-a corrected. Chl-a corrected data were 

used when available; otherwise, chl-a data were used. Of the 50 candidate marine lakes, 41 lakes 

had sufficient TN, TP, or chl-a data for analysis. 
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The 41 marine lakes with nutrient data were classified into one of the following three 

comparison categories on the basis of the relationship to the inland criteria: 

1. Meets Inland Criteria—According to monitoring data, these lakes meet the inland 

criteria for all three parameters of an annual geometric mean not to be exceeded more 

than once in a 3-year period. 

2. In Range—Sufficient color/alkalinity data were not available for these lakes to 

determine which inland criteria would apply, but the monitoring values for all three 

parameters were at least within the range of the possible applicable criteria.

3. Exceeds Inland Criteria—For at least one parameter, for at least 2 out of 3 years, annual 

geometric means exceed the inland criteria. This category also includes a few lakes where 

only one year of data were available, but in that year, the annual geometric means exceed 

the inland criteria. 

A cell in Table F-5 was highlighted green if the annual geometric mean was less than the 

criterion, yellow if the annual geometric mean was within the range of the criterion, and red if 

the annual geometric mean exceeded the criterion. The lakes were then sorted by those three 

comparison categories in Table F-6. 

Table F-5. Inland criteria comparison data by year: green cell = annual geometric mean less than the criterion, 

yellow cell = annual geometric mean within the range of the criterion, and red cell = annual geometric mean greater 

than the criterion; NNC= numeric nutrient criteria

Name NHD Com ID Lake Class Lake Category Year 

TN 

(mg/L) TN NNC

TP 

(mg/L) TP NNC

Chl-a 

(μg/L)

Chl-a 

NNC

Meets Inland Criteria

Alligator Lake 35361059 III Marine Colored Lake 1996 0.54 1.27 0.010 0.05 3.0 20

1997 0.57 1.27 0.012 0.05 4.9 20

1998 0.47 1.27 0.009 0.05 2.4 20

2000 0.54 1.27 0.010 0.05 3.0 20

2001 0.57 1.27 0.012 0.05 4.9 20

2002 0.47 1.27 0.009 0.05 2.4 20

2003 0.75 1.27 0.010 0.05 2.1 20

2004 0.49 1.27 0.010 0.05 1.6 20

2005 0.52 1.27 0.010 0.05 3.7 20

2006 0.45 1.27 0.007 0.05 2.0 20

2008 0.92 1.27 0.009 0.05 13.3 20

2009 1.22 1.27 0.010 0.05 4.6 20

Camp Creek Lake 122178217 & 

122178347 

III Marine Colored Lake 1990 0.38 1.27 0.005 0.05 1.7 20

1991 0.32 1.27 0.006 0.05 2.2 20

1992 0.38 1.27 0.008 0.05 3.8 20

1993 0.36 1.27 0.007 0.05 3.4 20

1994 0.36 1.27 0.006 0.05 2.3 20

1995 0.33 1.27 0.007 0.05 2.9 20

1996 0.36 1.27 0.010 0.05 4.7 20

1997 0.35 1.27 0.008 0.05 3.9 20

1998 0.34 1.27 0.007 0.05 2.9 20

1999 0.33 1.27 0.009 0.05 3.6 20

2000 0.36 1.27 0.011 0.05 5.1 20

2001 0.37 1.27 0.009 0.05 3.1 20

2002 0.39 1.27 0.007 0.05 0.5 20
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Name NHD Com ID Lake Class Lake Category Year

TN 

(mg/L) TN NNC

TP 

(mg/L) TP NNC

Chl-a 

(μg/L)

Chl-a 

NNC

2003 0.45 1.27 0.007 0.05 2.4 20

2004 0.33 1.27 0.007 0.05 2.5 20

2005 0.39 1.27 0.008 0.05 3.2 20

2008 0.60 1.27 0.010 0.05 2.7 20

2009 0.88 1.27 0.006 0.05 0.5 20

Deer Lake 122178150 III Freshwater Colored Lake 1994 0.52 1.27 0.012 0.05 5.6 20

1995 0.40 1.27 0.012 0.05 7.9 20

1996 0.41 1.27 0.012 0.05 5.1 20

1997 0.46 1.27 0.010 0.05 4.8 20

1998 0.47 1.27 0.012 0.05 6.8 20

1999 0.40 1.27 0.012 0.05 7.9 20

2000 0.41 1.27 0.012 0.05 5.1 20

2001 0.46 1.27 0.010 0.05 4.8 20

2002 0.43 1.27 0.011 0.05 7.9 20

2003 0.47 1.27 0.009 0.05 3.8 20

2004 0.40 1.27 0.009 0.05 4.8 20

2005 0.48 1.27 0.008 0.05 2.8 20

2008 0.48 1.27 0.009 0.05 0.6 20

2009 0.72 1.27 0.004 0.05 0.5 20

Draper Lake 35361005 III Marine Colored Lake 1992 0.49 1.27 0.022 0.05 5.6 20

1993 0.30 1.27 0.015 0.05 3.5 20

1996 0.49 1.27 0.022 0.05 5.6 20

1997 0.30 1.27 0.015 0.05 3.5 20

2003 0.50 1.27 0.015 0.05 9.8 20

2004 0.34 1.27 0.014 0.05 3.9 20

2005 0.52 1.27 0.022 0.05 8.8 20

2008 0.53 1.27 0.010 0.05 2.8 20

2009 0.87 1.27 0.05 4.6 20

Grass Lake 35357067 Additional Clear Lake, 

High Alkalinity

2003 0.18 1.05 0.020 0.03 8.0 20

2008 0.57 1.05 0.010 0.03 4.8 20

Morris Lake 35362925 III Marine Colored Lake 1994 0.38 1.27 0.005 0.05 2.5 20

1998 0.69 1.27 0.009 0.05 1.1 20

2002 0.69 1.27 0.009 0.05 1.1 20

2003 0.62 1.27 0.008 0.05 1.2 20

2004 0.54 1.27 0.008 0.05 2.3 20

2005 0.61 1.27 0.010 0.05 4.7 20

2006 1.27 0.011 0.05 3.6 20

2008 0.87 1.27 0.010 0.05 1.5 20

2009 0.91 1.27 0.010 0.05 20

NHD_116995331 116995331 Additional Colored Lake 2006 0.75 1.27 0.047 0.05 2.9 20

2007 0.63 1.27 0.053 0.05 7.3 20

2008 0.54 1.27 0.036 0.05 5.6 20

2009 0.53 1.27 0.027 0.05 8.3 20

NHD_125257161 125257161 Additional Clear Lake, 

High Alkalinity

2003 1.05 0.011 0.03 4.0 20

NHD_138374640 138374640 Additional High 

Alkalinity/

No Color

2009 0.80 1.05-1.27 0.019 0.03-0.05 3.4 20

NHD_138376283 138376283 Additional Clear Lake 1993 0.51-1.05 0.01-0.03 0.5 6-20

1994 0.51-1.05 0.005 0.01-0.03 0.7 6-20

Pippin Lake 35357089 Additional Colored Lake 2003 1.27 0.021 0.05 0.9 20

Powell Lake 122196984 III Marine Clear Lake, 

High Alkalinity

1990 1.92 1.05 0.130 0.03 4.8 20

1991 0.41 1.05 0.011 0.03 4.2 20
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Name NHD Com ID Lake Class Lake Category Year

TN 

(mg/L) TN NNC

TP 

(mg/L) TP NNC

Chl-a 

(μg/L)

Chl-a 

NNC

1992 0.31 1.05 0.016 0.03 3.7 20

1993 0.51 1.05 0.013 0.03 3.0 20

1994 0.46 1.05 0.013 0.03 4.0 20

1995 0.34 1.05 0.015 0.03 4.3 20

1996 0.43 1.05 0.017 0.03 5.2 20

1997 0.36 1.05 0.013 0.03 3.8 20

1998 0.46 1.05 0.017 0.03 5.5 20

1999 0.34 1.05 0.012 0.03 3.0 20

2000 0.34 1.05 0.014 0.03 2.5 20

2001 0.30 1.05 0.011 0.03 2.5 20

2002 0.33 1.05 0.022 0.03 3.7 20

2003 0.37 1.05 0.012 0.03 4.5 20

2004 0.28 1.05 0.014 0.03 3.6 20

2005 0.33 1.05 0.013 0.03 4.0 20

2006 0.47 1.05 0.016 0.03 4.5 20

Stalworth Lake 35362961 III Marine Colored Lake 1997 0.29 1.27 0.009 0.05 2.9 20

1998 0.32 1.27 0.007 0.05 1.1 20

2001 0.29 1.27 0.009 0.05 2.9 20

2002 0.32 1.27 0.007 0.05 1.1 20

2003 0.26 1.27 0.011 0.05 2.5 20

2004 0.24 1.27 0.011 0.05 2.2 20

2005 0.53 1.27 0.016 0.05 6.2 20

2006 1.27 0.016 0.05 8.2 20

2008 0.85 1.27 0.010 0.05 12.8 20

2009 0.80 1.27 0.010 0.05 6.7 20

Tarkiln Bayou 41224219 Additional Colored Lake 1997 0.52 1.27 0.05 20

1998 0.54 1.27 0.019 0.05 20

1999 0.49 1.27 0.027 0.05 20

2002 0.30 1.27 0.025 0.05 5.4 20

2005 0.77 1.27 0.010 0.05 3.1 20

2006 1.27 0.05 2.5 20

Tarpon Creek 135209949 Additional Colored Lake 1991 1.11 1.27 0.018 0.05 2.5 20

1992 0.87 1.27 0.029 0.05 4.0 20

1993 1.37 1.27 0.042 0.05 5.7 20

1994 0.85 1.27 0.031 0.05 2.6 20

1995 1.27 0.042 0.05 5.3 20

1996 1.27 0.040 0.05 8.1 20

1997 1.27 0.035 0.05 8.7 20

1998 1.43 1.27 0.040 0.05 8.2 20

1999 1.27 0.035 0.05 6.5 20

2000 1.27 0.039 0.05 7.0 20

2001 0.79 1.27 0.031 0.05 5.3 20

2002 0.57 1.27 0.025 0.05 5.5 20

2003 0.66 1.27 0.016 0.05 4.9 20

2004 0.78 1.27 0.025 0.05 6.2 20

Tee Lake 41221821 Additional Colored Lake 2005 1.07 1.27 0.023 0.05 5.1 20

Western Lake 122170304 III Marine Colored Lake 1992 0.37 1.27 0.007 0.05 3.4 20

1993 0.24 1.27 0.006 0.05 2.1 20

1995 0.24 1.27 0.009 0.05 2.1 20

1996 0.32 1.27 0.013 0.05 4.4 20

1997 0.23 1.27 0.008 0.05 2.0 20

1998 0.24 1.27 0.008 0.05 1.3 20

1999 0.24 1.27 0.009 0.05 2.1 20
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Name NHD Com ID Lake Class Lake Category Year

TN 

(mg/L) TN NNC

TP 

(mg/L) TP NNC

Chl-a 

(μg/L)

Chl-a 

NNC

2000 0.32 1.27 0.014 0.05 4.5 20

2001 0.22 1.27 0.009 0.05 2.9 20

2002 0.23 1.27 0.008 0.05 2.3 20

2003 0.32 1.27 0.010 0.05 2.0 20

2004 0.31 1.27 0.011 0.05 2.8 20

2005 0.29 1.27 0.008 0.05 2.4 20

2006 0.23 1.27 0.007 0.05 1.6 20

2008 0.47 1.27 0.008 0.05 3.9 20

2009 0.75 1.27 0.004 0.05 20

Wicker Lakes 41221785 Additional Colored Lake 2005 1.04 1.27 0.025 0.05 7.3 20

In Range

Big Redfish Lake 35361021 III Marine No Data 1994 0.15 0.51-1.27 0.010 0.01-0.05 5.7 6-20

1995 0.17 0.51-1.27 0.009 0.01-0.05 3.5 6-20

1996 0.19 0.51-1.27 0.009 0.01-0.05 2.7 6-20

1997 0.24 0.51-1.27 0.009 0.01-0.05 4.1 6-20

1998 0.15 0.51-1.27 0.009 0.01-0.05 4.4 6-20

1999 0.17 0.51-1.27 0.009 0.01-0.05 3.5 6-20

2000 0.19 0.51-1.27 0.009 0.01-0.05 2.7 6-20

2001 0.24 0.51-1.27 0.009 0.01-0.05 4.1 6-20

2002 0.16 0.51-1.27 0.005 0.01-0.05 1.6 6-20

2003 0.50 0.51-1.27 0.012 0.01-0.05 3.6 6-20

2004 0.38 0.51-1.27 0.013 0.01-0.05 4.3 6-20

2005 0.49 0.51-1.27 0.016 0.01-0.05 8.5 6-20

Eastern Lake 122178124 & 

122178211 

III Marine No Data 1993 0.21 0.51-1.27 0.009 0.01-0.05 2.5 6-20

1994 0.28 0.51-1.27 0.010 0.01-0.05 3.2 6-20

1995 0.23 0.51-1.27 0.010 0.01-0.05 2.1 6-20

1996 0.23 0.51-1.27 0.010 0.01-0.05 0.5 6-20

1997 0.22 0.51-1.27 0.010 0.01-0.05 2.9 6-20

1998 0.27 0.51-1.27 0.010 0.01-0.05 2.7 6-20

1999 0.23 0.51-1.27 0.010 0.01-0.05 2.1 6-20

2000 0.23 0.51-1.27 0.010 0.01-0.05 3.6 6-20

2001 0.23 0.51-1.27 0.010 0.01-0.05 3.5 6-20

2002 0.27 0.51-1.27 0.010 0.01-0.05 2.4 6-20

2003 0.27 0.51-1.27 0.012 0.01-0.05 4.0 6-20

2004 0.28 0.51-1.27 0.014 0.01-0.05 3.3 6-20

2005 0.33 0.51-1.27 0.016 0.01-0.05 5.8 6-20

2006 0.51-1.27 0.01-0.05 2.8 6-20

Johnson Bayou 122176127 Additional No Data 2003 0.68 0.51-1.27 0.038 0.01-0.05 13.1 6-20

2009 0.52 0.51-1.27 0.023 0.01-0.05 4.6 6-20

2010 0.37 0.51-1.27 0.01-0.05 4.0 6-20

Lake Earl 35358103 Additional No Data 2005 0.47 0.51-1.27 0.037 0.01-0.05 14.6 6-20

2006 0.51-1.27 0.01-0.05 5.2 6-20

Little Redfish 

Lake

35361065 III marine No Data 1998 0.66 0.51-1.27 0.013 0.01-0.05 5.6 6-20

2002 0.66 0.51-1.27 0.013 0.01-0.05 5.6 6-20

2003 0.66 0.51-1.27 0.012 0.01-0.05 1.5 6-20

2004 0.51 0.51-1.27 0.012 0.01-0.05 3.6 6-20

2005 0.59 0.51-1.27 0.014 0.01-0.05 3.4 6-20

2006 0.57 0.51-1.27 0.012 0.01-0.05 1.3 6-20
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Name NHD Com ID Lake Class Lake Category Year

TN 

(mg/L) TN NNC

TP 

(mg/L) TP NNC

Chl-a 

(μg/L)

Chl-a 

NNC

NHD_138376279 138376279 Additional No Data 1994 0.56 0.51-1.27 0.003 0.01-0.05 6-20

1996 0.78 0.51-1.27 0.015 0.01-0.05 6-20

1997 0.80 0.51-1.27 0.009 0.01-0.05 6-20

1998 0.63 0.51-1.27 0.008 0.01-0.05 6-20

1999 0.63 0.51-1.27 0.006 0.01-0.05 6-20

Exceeds Inland Criteria

Lake Maggiore 68768614 Additional Colored Lake 1992 1.27 0.217 0.05 79.6 20

1993 2.29 1.27 0.172 0.05 80.3 20

1994 3.10 1.27 0.136 0.05 67.1 20

1998 1.22 1.27 0.096 0.05 56.2 20

1999 1.12 1.27 0.056 0.05 51.7 20

2000 2.58 1.27 0.093 0.05 80.3 20

2001 3.02 1.27 0.072 0.05 148.7 20

2002 2.94 1.27 0.101 0.05 139.1 20

2003 3.10 1.27 0.131 0.05 202.4 20

2004 3.84 1.27 0.103 0.05 140.9 20

2005 3.05 1.27 0.079 0.05 118.7 20

2006 1.27 0.094 0.05 75.2 20

2007 1.27 0.077 0.05 50.5 20

Lake Placid 117030825 Additional Colored Lake 2006 1.15 1.27 0.073 0.05 0.5 20

Loughman Lake 107777621 Additional Colored Lake 2006 1.27 0.056 0.05 43.0 20

Maule Lake 138374706 Additional Clear Lake, 

High Alkalinity

1990 1.05 0.010 0.03 20

1991 2.38 1.05 0.015 0.03 20

1992 2.29 1.05 0.008 0.03 20

1993 1.19 1.05 0.003 0.03 20

1994 1.05 0.006 0.03 20

1995 1.00 1.05 0.008 0.03 20

1996 1.05 0.007 0.03 20

1997 1.05 0.004 0.03 20

1998 1.05 0.004 0.03 20

1999 1.05 0.003 0.03 20

2000 1.05 0.006 0.03 20

2001 1.05 0.005 0.03 20

2002 1.05 0.005 0.03 20

2003 1.05 0.004 0.03 20

2004 1.05 0.013 0.03 20

Mud Bay 117066915 Additional Colored Lake 2002 1.27 0.087 0.05 1.0 20

NHD_107712341 107712341 Additional Colored Lake 2006 1.27 0.074 0.05 48.0 20

NHD_138376274 138376274 Additional No Data 1990 0.19 0.51-1.27 0.069 0.01-0.05 6-20

NHD_138376288 138376288 Additional Clear Lake 2004 1.41 0.51-1.05 0.01-0.03 0.5 6-20

NHD_35361231 35361231 Additional Colored Lake 2008 1.09 1.27 0.073 0.05 6.2 20

2009 1.53 1.27 0.025 0.05 3.9 20

NHD_58671383 58671383 Additional Clear Lake, 

High Alkalinity

2004 1.08 1.05 0.080 0.03 1.3 20

NHD_78196995 78196995 Additional Colored Lake 2001 1.27 0.105 0.05 32.5 20

NHD_78216111 78216111 Additional Clear Lake 2002 1.36 0.51-1.05 0.050 0.01-0.03 1.4 6-20

2003 1.23 0.51-1.05 0.064 0.01-0.03 19.2 6-20

2004 1.47 0.51-1.05 0.052 0.01-0.03 24.0 6-20

2005 0.66 0.51-1.05 0.023 0.01-0.03 17.8 6-20
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Name NHD Com ID Lake Class Lake Category Year

TN 

(mg/L) TN NNC

TP 

(mg/L) TP NNC

Chl-a 

(μg/L)

Chl-a 

NNC

NHD_78673003 78673003 Additional Colored Lake 1990 1.09 1.27 0.390 0.05 56.8 20

1991 1.29 1.27 0.187 0.05 13.8 20

1995 0.98 1.27 0.255 0.05 20

1996 0.88 1.27 0.300 0.05 20

1997 1.01 1.27 0.202 0.05 20

1998 1.23 1.27 0.370 0.05 20

2005 0.87 1.27 0.211 0.05 17.5 20

Oyster Lake 35361013 III Marine No Data 1997 0.57 0.51-1.27 0.047 0.01-0.05 1.4 6-20

1998 0.68 0.51-1.27 0.035 0.01-0.05 1.6 6-20

2001 0.57 0.51-1.27 0.047 0.01-0.05 2.2 6-20

2002 0.68 0.51-1.27 0.035 0.01-0.05 1.6 6-20

2003 0.75 0.51-1.27 0.117 0.01-0.05 1.8 6-20

2004 0.59 0.51-1.27 0.075 0.01-0.05 4.0 6-20

2005 0.78 0.51-1.27 0.139 0.01-0.05 5.0 6-20

Peck Lake 138364367 Additional Clear Lake, 

High Alkalinity

1990 0.68 1.05 0.096 0.03 10.5 20

1991 0.59 1.05 0.058 0.03 7.0 20

1992 0.69 1.05 0.061 0.03 8.2 20

1993 0.66 1.05 0.074 0.03 4.5 20

1994 0.64 1.05 0.064 0.03 6.5 20

1995 0.72 1.05 0.076 0.03 8.0 20

1996 0.64 1.05 0.061 0.03 8.4 20

1997 0.94 1.05 0.041 0.03 4.3 20

1998 1.04 1.05 0.060 0.03 6.2 20

1999 0.47 1.05 0.043 0.03 2.6 20

2000 0.47 1.05 0.058 0.03 4.1 20

2001 0.36 1.05 0.063 0.03 5.7 20

2002 0.41 1.05 0.080 0.03 5.0 20

2003 0.82 1.05 0.069 0.03 5.1 20

2004 0.52 1.05 0.069 0.03 7.4 20

2005 0.51 1.05 0.074 0.03 7.4 20

2007 0.51 1.05 0.061 0.03 7.5 20

Red Lake 61269171 Additional Colored Lake 2003 0.96 1.27 0.350 0.05 13.4 20

2005 0.50 1.27 0.260 0.05 3.7 20

2006 0.70 1.27 0.320 0.05 12.9 20

2007 0.56 1.27 0.250 0.05 4.6 20

2008 0.65 1.27 0.250 0.05 20.3 20

2009 0.59 1.27 0.05 17.2 20

Salt Lake 107712397 Additional Colored Lake 2006 1.27 0.068 0.05 46.0 20
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Table F-6. Inland criteria comparison summary by lake class, lake criteria category, and comparison category 

(from data in Table F-5) 

Name NHD Com ID Lake Class Lake Category Comparison

Alligator Lake 35361059 III Marine Colored Lake Meets Inland Criteria

Camp Creek Lake 122178217 & 122178347 III Marine Colored Lake Meets Inland Criteria

Deer Lake 122178150 III Freshwater Colored Lake Meets Inland Criteria

Draper Lake 35361005 III Marine Colored Lake Meets Inland Criteria

Grass Lake 35357067 Additional Clear Lake, High Alkalinity Meets Inland Criteria

Morris Lake 35362925 III Marine Colored Lake Meets Inland Criteria

NHD_116995331 116995331 Additional Colored Lake Meets Inland Criteria

NHD_138376283 138376283 Additional Clear Lake Meets Inland Criteria

Pippin Lake 35357089 Additional Colored Lake Meets Inland Criteria

Powell Lake 122196984 III Marine Clear Lake, High Alkalinity Meets Inland Criteria

Stalworth Lake 35362961 III Marine Colored Lake Meets Inland Criteria

Tarkiln Bayou 41224219 Additional Colored Lake Meets Inland Criteria

Tarpon Creek 135209949 Additional Colored Lake Meets Inland Criteria

Tee Lake 41221821 Additional Colored Lake Meets Inland Criteria

Western Lake 122170304 III Marine Colored Lake Meets Inland Criteria

Wicker Lakes 41221785 Additional Colored Lake Meets Inland Criteria

NHD_125257161 125257161 Additional Clear Lake, High Alkalinity Meets Inland Criteria

NHD_138374640 138374640 Additional High Alkalinity/No Color Meets Inland Criteria

Big Redfish Lake 35361021 III Marine No Data In Range

Eastern Lake 122178124 & 122178211 III Marine No Data In Range

Johnson Bayou 122176127 Additional No Data In Range

Lake Earl 35358103 Additional No Data In Range

Little Redfish Lake 35361065 III Marine No Data In Range

NHD_138376279 138376279 Additional No Data In Range

Lake Maggiore 68768614 Additional Colored Lake Exceeds Inland Criteria

Lake Placida 117030825 Additional Colored Lake Exceeds Inland Criteria

Loughman Lake 107777621 Additional Colored Lake Exceeds Inland Criteria

Maule Lake 138374706 Additional Clear Lake, High Alkalinity Exceeds Inland Criteria

Mud Baya 117066915 Additional Colored Lake Exceeds Inland Criteria

NHD_107712341 107712341 Additional Colored Lake Exceeds Inland Criteria

NHD_138376274a 138376274 Additional No Data Exceeds Inland Criteria

NHD_138376288a 138376288 Additional Clear Lake Exceeds Inland Criteria

NHD_35361231a 35361231 Additional Colored Lake Exceeds Inland Criteria

NHD_58671383a 58671383 Additional Clear Lake, High Alkalinity Exceeds Inland Criteria

NHD_78196995 78196995 Additional Colored Lake Exceeds Inland Criteria

NHD_78216111a 78216111 Additional Clear Lake Exceeds Inland Criteria

NHD_78673003 78673003 Additional Colored Lake Exceeds Inland Criteria

Oyster Lakea 35361013 III Marine No Data Exceeds Inland Criteria

Peck Lakea 138364367 Additional Clear Lake, High Alkalinity Exceeds Inland Criteria

Red Lake 61269171 Additional Colored Lake Exceeds Inland Criteria

Salt Lake 107712397 Additional Colored Lake Exceeds Inland Criteria a These nine lakes exceed the inland criteria but have monitoring values that possibly make the lakes eligible for the modified 

criteria provisions for lakes, of the Final Rule.
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Parameters on FDEP’s 303(d) list were compiled for the 41 lakes assessed for the application of 

the inland criteria to determine the proportion of lakes in each category listed for a nutrientrelated stressor (Table F-7). Of the 18 lakes identified that meet the inland criteria, 6 were listed 

as impaired for DO, 2 for nutrients, and 10 were not listed for a nutrient-related stressor. Of the 

six lakes identified in the range of the inland criteria, four were listed as impaired for DO, one 

for DO and nutrients, and one was not listed for a nutrient-related parameter. Of the seven lakes 

identified as exceeding the inland criteria with more than one year of data, two were listed as 

impaired for DO and nutrients, one for chl-a, and four were not listed for a nutrient-related 

parameter. Of the 10 lakes identified as exceeding the inland criteria with less than one year of 

data, four were listed as impaired for DO, two for nutrients, and four lakes were not listed for a 

nutrient-related parameter.

Table F-7. Comparison to inland criteria with 303(d) impaired status; parentheses indicate number of lakes 

where chl-a, TN, and TP met the test for receiving potentially modified nitrogen and phosphorus criteria

Lake Class/303(d) Listing Parameter

III Marine III Freshwater Additional

NumberNutrientChl-a DOBOD NoneNumberNutrientChl-a DOBOD NoneNumberNutrientChl-a DOBOD None

Meets Inland Criteria 7 1 – 6 – 1 1 – – – – 1 10 1 – – – 9

In Range of Inland Criteria 3 – – 3 – – – – – – – – 3 1 – 2 – 1

Exceeds Inland Criteria 1 – – – – 1 (1) – – – – – – 6 2 1 2 (1) – 3

Exceeds Inland Criteriaa – – – – – – – – – – – – 10 2 4 (3) – 4 (3)

Totals 11 1 0 9 0 2 (1) 1 0 0 0 0 1 29 6 1 8 (4) 0 17 (3) a Number of lakes with only one year of data, no assessment of duration and frequency.

F.4 References 

Duxbury, A.C. 1971. The Chemistry of Seawater. Chapter 6 in The Earth and its Oceans. pp. 

114-120. Addison-Wesley Publishing Company, Inc., Reading, MA. 

USEPA. 2010. Water Quality Standards for the State of Florida’s Lakes and Flowing Waters; 

Final Rule. U.S. Environmental Protection Agency, Office of Water. Fed. Regist., Dec. 6, 

2010, 75:75762. http://water.epa.gov/lawsregs/rulesregs/florida_index.cfm.