Wetlands Delineation and SAV Report 

Non-motorized Boathouse 

Georgetown University 

Washington, D.C. 

Project 04121197 February 4,2005 
656 Quince Orchard Road 

Suite 700 

Gaithersburg, MD 20878 

Phone (301) 417-2400 

Fax (301) 417-2730 

www.schnabel-eng.com

February 4, 2005 

Mr. Christopher Jordan 

Georgetown University 

3702 Water Street N.W. 

Basement New South Building 

Washington, D.C. 20057 

Subject: Wetlands Delineation and SAV Report, Non-motorized 

Boathouse, Georgetown University, Washington, D.C. 

(Schnabel Project 04121197, Tasks 01 & 02) 

Dear Mr. Jordan: 

Schnabel Engineering North, LLC (Schnabel), is pleased to submit this report for a wetlands 

delineation and Submerged Aquatic Vegetation (SAV), assessment for the above referenced project 

as described in Schnabel’s proposals to Georgetown University, and in fulfillment of Georgetown 

University’s Purchase Orders C000451030 and C000451166. 

EXECUTIVE SUMMARY 

The site planned for Georgetown University’s Non-motorized Boathouse is approximately one acre 

in size and contains approximately 1⁄3 acre of vegetated wetlands. An artificial hydrology source is 

believed to feed these wetlands. The leaking C&O Canal located directly upgradient from the site is 

believed to be the leaking hydrology source. Due to the artificial source, the Corps has verbally 

stated that it will not exert its regulatory authority under Section 404 of the Clean Water Act. The 

boathouse site is located on the Potomac River. The possible location of bank-stabilizing structures 

necessitated the identification of the Ordinary High Water Mark (OHWM): the extent to which the 

Corps of Engineers regulates tidal, navigable waters. This OHWM is located at approximately four 

feet MSL (NAVD29). There were no Submerged Aquatic Vegetation (SAV) beds identified within 

the Potomac in the vicinity of the proposed boathouse. The validity of these findings is dependent 

on the jurisdictional determination by the U.S. Corps of Engineers, Baltimore District. 

1.0 PROJECT DESCRIPTION 

The subject site is located along the Potomac River, on Georgetown University property in 

northwest Washington, D.C. The subject property is located at the end of K Street, N.W., along the 

Park Service’s Capital Crescent Trail. The area of study (approximately 1.0 acre, 400 x 100 feet) is 

planned for the construction of an 18,000 square foot non-motorized boathouse to be used by the 

"We are committed to serving our clients by exceeding their expectations." 

Geotechnical y Construction Monitoring y Dam Engineering y Geoscience y Environmental
Georgetown University (the University) rowing team. The University is interested in the subject 

property because the location is close to its campus, and within easy access of transportation routes. 

The Chesapeake & Ohio Canal, a National landmark, lies upgradient of the area of study. The 

subject site is located between the Canal and the Potomac River. In addition to the boathouse, 

approximately 300 to 400 feet of bank stabilization will be installed at or below the ordinary high 

water (OHWM) of the Potomac River. This bank stabilization will be constructed with minimal 

disruption to the aesthetics of the area’s waterfront. 

This property, owned by the National Park Service (NPS), is committed for a land swap with another 

piece of property owned by the University. It is our understanding that the property planned for land 

swap is located farther upstream along the Potomac River, within an area that is not developed and 

which possesses extensive, relatively undisturbed, on-site wetlands. 

The objective of this study is to assist with assessing the site for vegetated wetlands and “waters of 

the U.S.,” as defined by the Clean Water Act. To this end, we evaluated conditions at the site 

according to the U.S. Army Corps of Engineers' 1987 Wetland Delineation Manual. This manual 

describes the methodology required by the U.S. Army Corps of Engineers to identify and delineate 

wetlands that may come under their regulatory jurisdiction (Section 404 of the Clean Water Act). 

The U.S. Environmental Protection Agency (EPA), as well as the District of Columbia’s Department 

of Health, Bureau of Environmental Quality, Water Quality Division, accepts this methodology for 

wetland delineation. In addition, we studied the riverfront and submerged areas proposed for impact 

for the presence of and type of Submerged Aquatic Vegetation. 

2.0 EXPECTED CONDITIONS 

We understood, prior to our site visit, that jurisdictional opinions expressed by the Baltimore District 

Corps of Engineers (Corps) in 1995 described possible wetlands on the site as having formed due to 

leakage of the C&O Canal, and subsequent subsurface damming caused by an 84-inch sewer main 

beneath the site, running parallel to the river, and therefore any site wetlands was considered to be in 

their jurisdiction. Recently the Corps was consulted regarding their jurisdictional determination of 

these wetlands, and once again informed the University that these wetlands do not come under 

Corps' jurisdiction due to an artificial hydrologic source (leaking upgradient of the C&O Canal). 

Though the Corps apparently did not find this area within their jurisdiction in 1995, the District of 

Columbia (District) believes the area may fall within their environmental interest. Due to the age of 

the Corps’ decision (more than 5 years old) and the concerns expressed by the District, Schnabel was 

retained to provide a delineation. 

The Soil Survey of the District of Columbia, prepared by the USDA Soil Conservation Service 

(1976), indicates variable soils in the vicinity of the site including Urban land and Udorthents, which 

are non-geologic classifications due to filling that has taken place along the Potomac Waterfront in 

this general area. Our understanding is that the area was once open river and now is underlain by an 

84-inch sewer line. The artificial circumstances of fill soils, water leakage from off-site, and 

disturbed vegetated cover indicated to us that the area would be highly disturbed, and the soils would 

be somewhat transitional between upland and hydric soils because of consistent leakage of the 

Canal. According to the District’s Wetland Conservation Plan (1997) (Attachment 2), there are no 

mapped, known wetlands within this area. A copy of the US Fish and Wildlife “Wetland Mapper” is 

Project 04121197 / February 4, 2005 Page 2 Schnabel Engineering North, LLC 
included in Attachment 2, and shows no aerially detected wetlands at or in the vicinity of the subject 

site. 

The second area of potential jurisdiction was of the Potomac River. Consideration was given to the 

use of either shoreline high water markings or the use of tidal data elevations to determine the extent 

of the Corps’ jurisdiction. Work performed below the Corps’ jurisdictional line (ordinary high water 

mark, or mean high tide) will require a permit from the Corps. The wetland boundary and 

estimation of the OHWM are depicted on the Wetland Boundary Plan (Attachment 3). 

3.0 METHODS 

A routine wetland field investigation includes establishing points along the transition to mapped 

hydric soils, or soils that may have hydric inclusions. In addition to soil data, vegetation and 

hydrologic indicators of wetlands are recorded. Accepted soil sampling procedure advises boring a 

16-inch deep hole with a tile spade (Environmental Laboratory, 1987). Soils are observed, and their 

colors and consistency noted at a series of depths, with 10 inches below the soil surface (just below 

the A Horizon) being the most significant. For purposes of this study, soil is defined as 

"unconsolidated, natural material that supports, or is capable of supporting plant life" (Ibid., 1987). 

The soil probe is the center of the data point used for vegetation investigation and data collection.

We probed in several locations along the transition from obvious upland to obvious wetland. We 

consulted the District’s Soil Survey for descriptions of mapped soil types on the project site in order 

to compare our findings. 

The dominant vegetation within a five-foot diameter of the soil probe was recorded for the 

herbaceous, shrub or understory tree layer, and within a 30-foot diameter for trees. We then 

categorized each plant species by its status as shown in Table 1, according to Reed (1988). 

Table 1 - Wetland Plant Status 

CATEGORY ABBREVIATION DEFINITION 

Not Listed NL Not listed in Reed, 1988 

No Indicator NI Insufficient information available to determine 

indicator status 

Obligate upland UPL Occurs <1% of the time in wetlands 

Facultative upland FACU Occurs 1% to 33% of the time in wetlands 

Facultative FAC Occurs 34% to 66% of the time in wetlands 

Facultative wetland FACW Occurs 67% to 99% of the time in wetlands 

Obligate wetland OBL Occurs >99% of the time in wetlands 

 

If 50% or more of the sampling area is dominated by plants that are categorized as FAC, FACW, or 

OBL, the site's vegetative parameter is considered positive for hydrophytic or wetland vegetation. 

Indicators of positive site hydrology (e.g., water logging, saturation, ponding/inundation, and 

physiological adaptations of plants to flooding) were noted. "Waters" are noted either by observing 

Project 04121197 / February 4, 2005 Page 3 Schnabel Engineering North, LLC 
scour marks (ordinary high watermarks), if existing for water bodies, from "top of bank" to "top of 

bank" for small channels; or delimited according to existing tidal range data for the year (spring high 

tide). Observations for each wetland data point are recorded on data forms approved by the Corps' 

1987 Wetlands Delineation Manual (Ibid., 1987), and are included as Attachment 4. 

For tidal and/or Navigable Waters, the mean high water mark (maximum height of Diurnal tide for 

purposes of Rivers and Harbors Act) was found by analyzing the gauge heights of the USGS Station 

01647600 located at the end of Wisconsin Avenue, N.W., in the tidal Potomac, at Latitude 

38°54'08.4", Longitude 77°03'45.9" NAD83. The tidal data at the USGS website is provided in 

Washington Mean Low (WML). 

Submerged Aquatic Vegetation (SAVs) 

As a part of a separate contract with the University, Schnabel provided a review of historic data and 

a field intensive study related to potential SAV beds located in the vicinity of the University 

Boathouse’s new dock, within the Potomac River. We reviewed data maintained by the Chesapeake 

Bay Program to find historic locations of SAV beds. We also conducted field sampling using a 15-

foot skiff and a straight road rake with a 12-inch head. The skiff was anchored within about five feet 

of the shore, and held perpendicular to the shoreline. The river bottom was raked on both sides of 

the skiff, raking the top three inches of the bottom sediment by pulling the rake toward the boat, and 

then lifting up on the rake to study the materials removed from the bottom. The skiff was then 

moved 10 feet downstream, and the process was repeated until the entire length of shoreline was 

raked to some degree. Also, the intertidal zone was observed, and an indication of plant growth was 

noted. 

After raking the sediments in front of the proposed boathouse location, the shorelines and coves 

within the vicinity of the site were observed, as well as the C&O Canal, for presence of SAVs. 

Finally, contact was made with river “users” and government agencies acquainted with the Potomac 

River to gather additional information, discuss findings of our study, and substantiate our opinions 

regarding the site. Photographs are included in Attachment 5. 

4.0 FINDINGS AND RESULTS 

The site is located at approximately 38o53'60" Latitude and 77o4'12" Longitude. Generally, 

conditions expected were substantiated during the site visit on September 22 and November 9, 2004. 

The shape of the site is rectangular, with its long access running perpendicular to the Potomac River. 

The study area borders the Potomac and appears to consist of fill, which abruptly extends from the 

bottom of the bank vertically three to five feet. Vegetative cover included a combination of mature 

and immature hardwoods, as well as herbaceous plants, around the perimeter, and generally 

herbaceous plant cover within the central portions of the study area. 

Vegetation

The site consisted of the following plant cover types: mowed turf grass, wet meadow, hardwood 

shrub dominated, and hardwood tree dominated. The site appeared to be largely dominated by 

invasive exotic plant species, interspersed with mature native trees and some native saplings. 

Project 04121197 / February 4, 2005 Page 4 Schnabel Engineering North, LLC 
Three data points were established. One was located in the dry, mowed turf grass area next to the 

fence placed by the Washington Canoe Club. The second data point was located directly north of 

the first, approximately 30 feet away. We believe that this data point is the approximate transition 

area between wetland and upland. The third data point was located well into the wetland, where 

conditions were noted to be saturated with a dominance of hydrophytic plants. Due to the time of 

year and the condition of most plants, flowering parts of most plants were not available for 

evaluation. Therefore identification of some plants is preliminary. Please see the Wetland Boundary 

Plan (Attachment 3) for the location of data points, the wetland boundary and the general site 

features. 

Generally, dominant plants located in the wetland portion of the site consisted of the following: 

Table 2 

Plant Name Indicator Status 

♦ Ulmus americana-American elm FACW 

♦ Cyperus strigosus-Flat sedge FACW 

♦ Unidentified grass (Agrostis alba?) FACW? 

♦ Echinochloe crusgalli-Barnyard grass FACU 

♦ Fraxinus nigra FAC 

♦ Lonicera maackii-Amur honeysuckle (Not listed) 

The most dominant plant in the uplands and along the upland/wetland transition was Lonicera 

maackii- (Amur honeysuckle-NL). Thickets of L. maackii-covered large sections of the site and 

most of the understory consisted of the same. Morus alba (White mulberry-UPL) also dominated 

sections of the upland. The site, both upland and wetland areas, appeared to consist mostly of 

invasive, non-native vegetation. Only one obligate wetland plant was identified: Typha latifolia

(Cattail-OBL). 

The vegetative structure appeared to occur in linear bands, progressing parallel to the edge of the 

walking path to the riverbank. The first vegetative cover type, starting from the path, consisted of 

about a 25-foot wide section of native, mature trees, in both wetland and upland areas. Many of the 

trees in this first band were native, quite mature, and somewhat large, with one Acer saccharinum

(Silver maple-FACW) of approximately 24 inches dbh (diameter of tree about 4 feet up from the 

ground), with wetter areas in the central and southern sections of the band. The next consistent band 

of vegetation was about 30 feet in width and was dominated by herbaceous plants, mostly grasses, in 

both upland and wetland areas (drier at either end). There were a few, scattered woody seedlings 

(Salix sp.-Willow-OBL) within this band. The final band extended out about 30 feet, ending at the 

bank of the Potomac, and was dominated by a growth of saplings four to six inches dbh (mostly M. 

alba) and areas of honeysuckle (L. maackii) thickets. Ground cover in this waterfront band included

Hedera helix (English Ivy-NL). The wetland area extended mostly within the herbaceous growth 

band, but also extended into the mature wooded area and the sapling band to some extent. 

Project 04121197 / February 4, 2005 Page 5 Schnabel Engineering North, LLC 
It may be that these “bands” of vegetation represent the development activity that has taken place at 

the site. The band of mature trees running along the hiking path was most likely the previous 

frontage on the Potomac River. The hiking path was once the Baltimore & Ohio Railroad, but has 

been converted to a hiking and biking path. In the early 1960s, the District of Columbia Water and 

Sewer Authority installed an 84-inch sewer main along this previous shoreline by bringing in fill 

material, burying the pipe, and creating a new shoreline of the Potomac River. The herbaceous 

cover may persist due to long-term saturation and unsuitable soils for tree establishment. There may 

have also been maintenance efforts made within the easement to eliminate woody trees from the 

pipeline corridor. 

Submerged Aquatic Vegetation (SAVs) 

Although records of SAV beds exist for the University Boathouse area historically (Attachment 6), 

there were no root systems or remnants of stems/leaves observed in the vicinity of the shoreline. 

Concern that the date of the assessment was too late in the year (November 9, 2004) to detect SAVs 

indicated that a review of the tidal flats in the vicinity of the site was merited. Flats across the river 

and down the Little River and the Georgetown Channel were observed from the water at low tide. 

Also, interviews with river users and government agencies working on the river took place. SAVs 

were found in one location (west side of Roosevelt Island), but generally the lack of SAVs was 

remarkable for the extensive tidal flats and shallows present in the river, as well as historical 

locations. Of note during sediment raking at the University Boathouse site were numerous shellfish. 

There were some rakings that brought up at least 10 or 15 individual living organisms at a time, 

mostly the Asiatic clam Corbicula fluminea. In addition, there were two Gastropod species found. 

It is general knowledge to both frequent river users and the Chesapeake Bay Program that SAV beds 

have drastically reduced in size and number over the past two to three years. There are records that 

beds of Hydrilla had been located off the shoreline of the University Boathouse site in 2002; 

however, no current remnants of these beds remain. Within the C&O Canal, upgradient of the 

boathouse site, thick growth of SAV (Hydrilla) remains and was observed on the day of the SAV 

assessment (See Photo 14, Attachment 5). 

Soils 

Site soils have been severely impacted from past human activities. Although the area historically 

was presumably within the tidal range of the Potomac, filling activities over the past 50 to 75 years 

have resulted in the site’s conversion from intertidal freshwater flats to upland. It appears that filling 

first occurred for the purposes of construction of the Baltimore & Ohio Railroad. Later, filling to 

install the 84-inch sewer main by the District of Columbia Water and Sewer Authority resulted in 

further elevation of the site above the Potomac River. 

The Soil Survey for the District of Columbia (1976) shows the existence of both U1 (Udorthents) 

and Ub (Urban) soils. Both of these soils are not in their natural condition, and are variable in their 

makeup. Consistent between the soils is that they have been moved by machinery in some way. The 

permeability of the soil is variable, as is the drainage class. Alluvial deposits underlie these 

disturbed soils. 

Project 04121197 / February 4, 2005 Page 6 Schnabel Engineering North, LLC 
Soil borings advanced during the wetland assessment revealed the disturbed nature of the soils. It 

was very difficult to dig below about six inches beneath the ground surface. Below six inches 

appeared to be compacted gravel. Relatively recent disturbance, due to the sewer installation, may 

be the reason for the consistent location of gravel in the surface soils. 

Hydrology

The influence of water on the site is obvious, but apparently not of natural origin. The water that 

saturates the surface soils comes not from wetting by the river, but from subsurface discharge. 

Observation of the hydrologic conditions revealed a saturated soil, and in some cases, surface 

ponding. There are no visible surface sources that drain to the wetland area. However, directly 

upgradient (30 feet in elevation above the site), the C&O Canal flows through a hand-placed block 

wall. The mortar between the blocks has long since deteriorated, and the water level within the 

canal is very low through this section. Please see photos of this section of the canal in Attachment 5. 

It appears that the water that flows through the canal may have found a seepage way downgradient 

and now, due to hydraulic head, discharges at the boathouse site. Just downstream of the “dry” 

canal, water again fills the canal. Please see Photos 13 and 14 in Attachment 5. 

Records to estimate monthly tidal/flow heights were obtained from a USGS tidal gauge located at 

Wisconsin Avenue, N.W. (http://waterdata.usgs.gov/nwis/nwisman/?site_no=01647600&agency_cd=USGS). The 

gauge data included gauge elevation heights, in feet above Washington Mean Low (WML). Feet 

above mean sea level (MSL) is calculated by subtracting 1.41 feet from WML. The average high 

elevation at the proposed non-motorized boathouse site is 4.03 MSL. Because MSL is in datum 

NVGD29 and the topography on the plan in Attachment 3 is in the Washington, D.C., surveyors' 

datum (0.7 feet lower), the OHWM is marked at 3.33 feet. The topographic location of this 

elevation will be used as the location of Ordinary High Water (OHW). Please see raw data in 

Attachment 7. 

5.0 GENERAL AND LIMITATIONS 

The conclusions and recommendations of this report are based on the information revealed by this 

exploration. Be advised that the findings of this report are for the day the assessments were 

performed at the locations indicated, and may be limited by a number of factors, including but not 

limited to, the time of year, human impacts, climatic factors, and the like. The wetland boundary 

depicted on the Wetland Boundary Plan represents our professional opinion and must be verified by 

the U.S. Army Corps of Engineers, Baltimore District. Once obtained, a Corps’ jurisdictional 

determination is acceptable for a five-year period, unless otherwise determined by the Corps. 

This project was conducted by a Professional Wetland Scientist certified by the Society of Wetland 

Scientists, the only current, nationally recognized certification program in the United States (see 

www.wetlandcert.org). The resume of our key scientist involved in this project is included in 

Attachment 1. 

We have endeavored to prepare this report in accordance with generally accepted ecological practice 

and make no warranties, either express or implied, as to the professional advice provided under the 

terms of our agreement and included in this report 

Project 04121197 / February 4, 2005 Page 7 Schnabel Engineering North, LLC 
We appreciate working with Georgetown University and look forward to continued involvement 

with this project. If you have any questions or comments regarding the findings of this report, please 

call. 

Very truly yours, 

SCHNABEL ENGINEERING NORTH, LLC 

Jane O. Rowan, P.W.S. 

 Senior Associate 

JOR:JMS:hcf 

Attachments: 

(1) Resume of Personnel 

(2) Published Wetlands Maps 

(3) Wetland Boundary Plan 

(4) Corps Data Sheets 

(5) Photographs 

(6) SAV Maps 2000-2003 

(7) Tidal Gauge Information 

(8) References 

Distribution: 

 Georgetown University (3) 

 Attn: Mr. Christopher Jordan 

 EDAW, Inc. (1) 

 Attn: Mr. Richard Dorrier 

A. Morton Thomas (1) 

 Attn: Mr. Bob Warner 

Corps of Engineers - Baltimore District (2) 

 Attn: Mr. George Harrison 

District of Columbia Department of Health (1) 

 Attn: Ms. Diane Douglas 

Project 04121197 / February 4, 2005 Page 8 Schnabel Engineering North, LLC 
ATTACHMENT 1 

Resume of Personnel 

Project 04121197 / February 4, 2005 Schnabel Engineering North, LLC
Jane Offringa Rowan, P.W.S., LEED® 

Senior Associate

EXPERTISE Wetland Delineation, Habitat Restoration; Environmental Impact Analysis, 

Permitting, Stream Restoration Design, Sustainable Design 

EDUCATION Post Graduate Work/Botany/Drexel University 

M.S./1982/Environmental Science/SUNY College of Environmental Science and 

Forestry, Syracuse 

B.S./1978/Biology and Chemistry/University of Massachusetts, Dartmouth 

REGISTRATION Certification as a Professional Wetland Scientist by the Society of Wetland Scientists 

LEED® 2.0 Professional Accreditation 

SUMMARY Ms. Rowan has experience with multi-level government efforts to regulate wetland 

resources. She has served at the local level as an Environmental Consultant to a 

coastal township Conservation Commission as well as an Ecologist for the U.S. 

Environmental Protection Agency. At Schnabel Ms. Rowan has managed and 

completed permit applications and obtained permits in multiple states on the east 

coast. 

Ms. Rowan provides multidisciplinary management and expertise in natural and 

water resources, and wetlands projects; where she assesses existing conditions of 

habitats, watersheds, wetlands, lakes and streams; considering and minimizing 

damages and impacts; and designing restoration plans. Ms. Rowan works with a 

team of Schnabel engineers, hydrologists, and geologists to provide designs for 

wetland mitigation including restoration and creation, and stream rehabilitation and 

relocation designs. Ms. Rowan has provided watershed and stream restoration 

designs that focus on a combination of physical and biological integrity. Finally, Ms. 

Rowan provides Best Management Practice (BMP) designs and has provided 

numerous consultations regarding mitigation of impacts and sustainable ecological 

design strategies. 

SPECIALIZED 

EXPERIENCE 

♦ Little Crum Creek Implementation, Swarthmore College, Swarthmore, 

Pennsylvania: Ms. Rowan was the Project Manager and Associate Scientist for 

the development of scenarios at two sites selected by Swarthmore College to 

serve as wetland and riparian zone restoration. These restoration areas were 

developed to control sediment laden stormwater input into Little Crum Creek. 

She worked with Swarthmore college students, the Swarthmore Borough, as well 

as a local high school to maximize the educational and public benefit for the 

project. The project involved delineating wetlands and the installation of 

groundwater wells in both sites. Double ring infiltrometers were installed at one 

of the sties in order to approximately measure the infiltration rates of surface 

water within the riparian zone. A wetland planting restoration plan was 

developed in order to maximize a diverse habitat and improve water quality. 

Ms. Rowan also coordinated with the US Army Corps of Engineers and the PA 

Department of Environmental Protection (PADEP) regarding permitting issues, 

although extra effort was made to avoid the need for a permit. This project was 

funded by the PADEP through a Growing Greener Grant. 

♦ Crum Creek Watershed and Sourcewater Initiative, Chester and Delaware 

Counties, Pennsylvania: Schnabel was a consultant for the Delaware County 

Conservation District. Ms. Rowan was the Project Manager and lead Technical 

Scientist for this $150K study. Project partners included the PADEP, the 

Chester Ridley Crum Watersheds Association, Philadelphia Suburban Water 

Company, and both the Delaware County Planning Commission and the Chester 
Jane Offringa Rowan, P.W.S, LEED®. 

Page 2 

County Water Resources Authority. The plan included a watershed and 

sourcewater (Springton Reservoir) assessment for the purpose of maintaining 

and improving water quality in the 29 square mile watershed and 300 acre 

reservoir. The study was completed in December of 2001 and included 

extensive public input. Results will be used by the PADEP to develop Total 

Maximum Daily Loads (TMDL’s) for the watershed, as well as provide 

watershed stakeholders with the tools to implement Best Management Practices 

(BMP’s). 

♦ Kentucky American Water Company, Water Supply Study, Kentucky: Ms. 

Rowan was the Project Manager in the analysis of several reservoirs and other 

locations along the Kentucky River for future water supply development. The 

project employed a variety of existing resources, along with the development of 

an ArcView GIS project in order to view and analyze the topography within the 

river basin. The location of wetlands and other potentially complex issues that 

could result in difficulty during future permitting were identified and noted. 

♦ Wetland Delineation and Floodplain Study, Gaston Mall, Gastonia, Gaston 

County, North Carolina: The owners of the Gaston Mall were interested in 

expanding their mall into a contiguous, undeveloped parcel of land. This 

undeveloped land was mapped as a 100-year floodplain and contained two 

streams and bottomland wetlands. Ms. Rowan provided a detailed delineation of 

the wetlands and waters on the site, as well as an analysis of the streams’ water 

chemistry and biological health. As a result of the study it was recognized that 

severe impacts have occurred to one of the smaller streams resulting in a lack of 

a biological component. The wetland area is planned for conservation and 

impacts to water resources of significant value will be avoided where possible in 

order to limit the need for permitting. Schnabel engineers have provided a 

detailed hydrologic analysis of the streams and re-mapped the parcel’s floodplain 

and floodway. They have provided direction to the developers architect to locate 

structures in areas that will not impact either wetlands or the floodplain in order 

to satisfy the requirements of both local ordinances and Corps 2002 Nationwide 

Permit regulations. 

♦ Southwest Regional Jail Commission, Duffield, Virginia: Ms. Rowan was the 

Project Manager for assessing wetland issues on this regional jail site in an 

industrial park in Southwestern Virginia. The site had almost 800 ft of stream 

and an associated small wetland. Ms. Rowan delineated the aquatic system, 

provided agency liaison for the Section 404 permit, served as the client’s agent, 

and worked with the owner’s engineer to develop an on and off-site alternatives 

analysis, as well as mitigation scenarios. The selected mitigation scenario 

included a 1.14 acre conservation area with a 2/3 acre created wetland, stream 

and upland buffer. Schnabel provided full design services for the wetland 

construction and continues to provide services during construction to assure 

proper grading and placement of wetland and upland plants. 

♦ CSX Intermodal Facility, Greenwich Yard, South Philadelphia, 

Pennsylvania: Ms. Rowan was the Project Manager for the wetland delineation, 

environmental assessment, wetland design and monitoring at this railroad 

facility. The facility, covering hundreds of acres, required the filling of about 

seven acres of emergent (mostly Phragmites) and open water wetlands. Due to 

the degraded nature of these wetlands, the Commonwealth of Pennsylvania and 

the Corps of Engineers were open to the filling of these wetlands and their 
Jane Offringa Rowan, P.W.S, LEED®. 

Page 3 

replacement with higher quality tidal and emergent wetlands. Schnabel was 

retained to provide the mitigation design, monitoring plan and construction 

specifications. Monitoring and contractor oversight services are on-going. In 

addition to wetland issues, Ms. Rowan was retained to conduct a Rare and 

Endangered Plant Survey on the site. As a result of the survey, one endangered 

plant species and two proposed listed plant species were identified for the first 

time on or near the site. Ms. Rowan worked with the Civil Engineer and the 

other agencies to expedite the permitting process, while enhancing the 

opportunity to introduce a higher quality wetland system close to the Intermodal 

Facility. 

♦ U.S. Environmental Protection Agency, Region III, Interstate 476 

Environmental Review: Ms. Rowan was the Project Reviewer of this interstate 

highway project on behalf of the agency. She reviewed the Draft Environmental 

Impact Statement based on both the National Environmental Policy Act and 

Section 404 of the Clean Water Act. The project entailed about 10 miles of outer 

beltway in the suburbs of Philadelphia, filling about 30 acres of wetlands and 

replacement of about half of those wetlands within the highway alignment 

corridor. The other half of the wetland mitigation requirement was placed in the 

H. John Heinz National Wildlife Refuge in Tinicum, Pennsylvania. Ms. Rowan 

was involved with approving the wetland delineation boundary as well as 

reviewing and providing formal EPA comments on the proposed wetland 

mitigation design. 

♦ Stream Classification and Restoration, Soil Bioengineering, Wetland 

Creation and Permit Preparation, The Reichlin Tract, Arundel 

Corporation, Carroll County, Maryland: This mining project required the 

relocation of 2,000 ft of stream into a newly constructed, naturally meandering 

stream bed with designed contiguous floodplains and wetlands. The design took 

into account unstable karst geology and included innovative bioengineering of 

the stream banks, floodplain, and wetlands to encourage native plant 

revegetation, yet discourage sinkhole formation and bank erosion. The project 

design included hydrologic and hydraulic analyses and groundwater studies in 

order to produce detailed engineering plans and specifications. Ms. Rowan was 

the Team Leader for this multi-disciplinary portion of the mining project. The 

final report became a part of Schnabel’s larger Mining Plan and was also used in 

Schnabel’s permit application submission to the Maryland Department of 

Environment. 

♦ Shadow Lake Expansion, Capps, Florida: Ms. Rowan provided wetland 

delineation, permitting and mitigation design services on the expansion of a 16-

acre lake to a 37-acre lake. The wetlands within the impact area were delineated 

using both the Corps Manual and the Suwannee River Water Management 

District Wetland Delineation Methodology. Wetland design included the 

construction from uplands of a 8-acre shelf at the expanded lake edge that 

incorporated on-site woody material for hummock construction to provide a 

substrate for bottomland hardwood development. Schnabel also provided 

hydrology and hydraulic analyses and redesigned the dam to provide improved 

safety and stability. 

♦ Wetlands Delineation, Restoration Design and Permitting, Action Impact, 

Elverson, Pennsylvania: Delineation of wetlands and analysis of groundwater 

and geological data were used to prepare a wetland restoration design for an 
Jane Offringa Rowan, P.W.S, LEED®. 

Page 4 

impoundment expansion project. The existing impoundment was doubled in size 

and designed to take advantage of a zone of perched hillside seepage contiguous 

to the pool. Although a secondary planting design was included, the client saved 

significantly by employing Ms. Rowan’s strategy of removing and relocating 

living wetland plant sod in and contiguous to the regraded littoral zone. 

Management of permits and interagency liaison resulted in successfully 

obtaining the PA permits for this project under Pennsylvania’s Chapter 105, the 

Dam Safety and Encroachment Act. Monitoring of the restored wetland site is 

now in its second year. Successful revegetation contiguous to the littoral zone is 

100% with native, desirable wetland plant species. 

♦ Wetland and Environmental Impact Services, Rapidan Service Authority 

Water Supply Study, Ruckersville, Virginia: Schnabel was retained by the 

Service Authority to provide a major study of water supply alternatives in their 

service area. These alternatives included the evaluation of 22 pumped storage 

water supply reservoir sites for their potential to first serve the needs of the 

authority, and then provided needed safe yield without causing major 

environmental impacts. This study began by remotely evaluating these sites for 

their potential wetland acreage, and then studied the potential for protected 

species and cultural resources impacts and includes hydrologic evaluation of 

each site. Ms. Rowan is responsible for the next phase of the study, which 

recently commenced, and includes the coordination of interagency scoping 

meetings, presentation of the top five sites to the resource agencies and 

consultation support to the client. 

♦ Stream Classification and Restoration, Soil Bioengineering, Wetland 

Creation and Permit Preparation, The Reichlin Tract, Arundel 

Corporation, Carroll County, Maryland: This mining project required the 

relocation of 2,000 ft of stream into a newly constructed, naturally meandering 

stream bed with designed contiguous floodplains and wetlands. The design took 

into account unstable karst geology and included innovative bioengineering of 

the stream banks, floodplain, and wetlands to encourage native plant 

revegetation, yet discourage sinkhole formation and bank erosion. The project 

design included hydrologic and hydraulic analyses and groundwater studies in 

order to produce detailed engineering plans and specifications. Ms. Rowan was 

the Team Leader for this multi-disciplinary portion of the mining project. The 

final report became a part of Schnabel’s larger Mining Plan and was also used in 

Schnabel’s permit application submission to the Maryland Department of 

Environment. 

♦ Wetland Identification, Wetland and Stream Classification, USDA National 

Center for Cool and Cold Water Aquaculture, Leetown, West Virginia: A 

water transmission line was proposed for installation through a linear 

construction corridor running parallel to a stream on this government fishery 

facility. Aerial photography, County Soil Surveys and field verification were 

used to determine the existing location of wetlands along more than a mile of a 

major stream and three tributaries contributing to a series of fishery ponds. The 

wetlands and streams contiguous to this construction corridor were classified 

according to Cowardin, et al. (1979) and Level I Rosgen (1994). The site was 

evaluated for potential wetland mitigation areas. Applicable regulations were 

reviewed and recommendations made. 
Jane Offringa Rowan, P.W.S, LEED®. 

Page 5 

PROFESSIONAL 

AFFILIATIONS

American Water Resources Association-Board of Directors 

 Finance Committee 

Society of Wetland Scientists: Member, Chair, Professional Certification Committee 

Philadelphia Botanical Club 

Association of State Wetland Managers 

Society of Ecological Restoration 

Commercial Real Estate Women 

PUBLICATIONS 

AND LECTURES 

Presentation, 2003. Pennsylvania Society of Land Surveyors. “Wetland 

Identification and Delineation Methodology”, Valley Forge, PA. 

Presentation, 2002. American Water Resources Association Annual Conference. 

"The Crum Creek Watershed Assessment." Philadelphia, PA. 

Presentation, 2001. Society of Wetland Scientists Annual Conference. Oasis in the 

City: The Success of Wetland Creation at the CSXI Intermodal Facility in South 

Philadelphia, PA. Chicago, IL. 

Symposium Coordinator, 1993. "Wetland Plants: Diversity, Function, Importance - 

A Symposium." Solicited lecturers and coordinated events at the Philadelphia 

Botanical Club’s Centennial Year celebration. Proceedings published by the 

Academy of Natural Sciences of Philadelphia 144:239-340, 1993. 

February 1987. "The Flora of Pennsylvania Peat Bogs." Oral Presentation to the 

Philadelphia Botanical Club given at the Academy of Natural Sciences of 

Philadelphia. 

Offringa, J. and K. Wolper, 1986. "Working to Save Pennsylvania Peat Bogs." EPA 

Journal. 12:1. Jan/Feb, USEPA, Office of Public Affairs, Washington, DC, p. 18. 

Offringa, J. and K. Wolper, 1985. "EPA Region III Develops Policy for Regulating 

Peat Mining." National Wetland Newsletter. 7:6:4. Environmental Law Institute, 

Washington, D.C. 
ATTACHMENT 2 

Published Wetlands Maps 

USFWS Wetlands Map for the District of Columbia 

D.C. Wetland Map 

Project 04121197 / February 4, 2005 Schnabel Engineering North, LLC
GEORGETOWN UNIVERSITY, PROPOSED 

BOATHOUSE, WASHINGTON, DC
29

24

30

6

18

9

46

19

5

7

8

3

41

39

37

38

40

36

48

47

44

45 43

42

13 15

14

12

10

11

20

16

17

4

2

1

22

25

23

26

27

32

31 28

33

34

35

21

3 0 3 6 Miles

Government of District of Columbia

Department of Health

Environmental Health Administration

Bureau of Environmental Quality

Water Quality Division

51 N St. NE, 5th Floor

Washington, DC 200002

(202) 535-2190

Projection: UTM spheroid Clarke 1866 Zone: 18 Date: January, 2001

Note:

1. Delineation based on 1996 field reconnaissance

2. Wetland boundaries shown are intended for 

 planning purposes and do not reflect jurisdiction 

 under Section 404 of the Clean Water Act.

3. Wetlands shown do not include the Potomac 

 and Anacostia open water areas. Source: District of Columbia Wetland Conservation Plan, 1997

Known Wetlands 

within the 

District of Columbia

Identified by Number

Wetlands

Waterbodies

Key to Features
The following is a list of the KNOWN wetlands in the District of Columbia based on the District of 

Columbia Wetland Conservation Plan (1997). There are many wetlands within the city that are not listed 

here including the open water areas of the Potomac and Anacostia. 

Wetland 

 No. 

Location ADC Grid Longitude Latitude 

 

1 Beaverdam Creek at Kenilworth Courts 11-D11 76-56'-38"/56'06" 38-54'-56"/54'-39" 

2 Kenilworth Aquatic Gardens 11-B,C12 76-57'-00"/56'-28" 38-54'-54"/54'-30" 

3 Fort Lincoln New Town between Rt. 50 and 

Fort Lincoln cemetery 

11-C9 76-56'-39" 38-55'-02" 

4 Fort Lincoln between Rt. 50 and RR tracks 11-C10 76-56'-46" 38-55'-02" 

5 Fort Lincoln between Rt. 50 and Anacostia 11-B,C11 76-57'-12"/56'-44" 38-54'-59"/54'-48" 

6 West bank of Anacostia opposite Kenilworth 

Marsh Inlet 

11-B,C11 76-57'-06" 38-54'-51" 

7 East bank of Anacostia, immediately south of 

Kenilworth Marsh inlet 

11-B11,12 76-57'-10" 38-54'-49" 

8 West bank of Anacostia, 1000 ft. north of 

Hickey Run 

11-B11,12 76-57'-12" 38-54'-37" 

9 East bank of Anacostia, 800 feet north of 

Watts Branch 

11-B12 76-57'-15" 38-54'-28" 

10 National Arboretum Pond at Beechwood Road 10-K11 76-57'-54" 38-54'-45" 

11 National Arboretum Pond at Eagle Nest Drive 10-K10 76-57'-45" 38-54'-53" 

12 National Arboretum Pond at Crabtree Road 11-A11 76-57'-40" 38-54'-36" 

13 National Arboretum south of Crabtree Road 

nature center 

10-K11 76-57'-56" 38-54'-23" 

14 National Arboretum along Rhododendron 

Valley Road 

10-J11 76-58'-16" 38-54'-20" 

15 Langston Golf Course 16-K11 76-58'-01" 38-54'-12" 

16 Watts Branch Park 11-B13 76-57'-08" 38-54'-22" 

17 Watts Branch Park 11-B,C12 76-56'-55" 38-54'-21" 

18 East bank of Anacostia south of Watts Branch 11-A13 76-57'-31" 38-54'-17"/54'-06" 

19 East bank of Anacostia opposite Kingman 

Island 

11-A13 76-57'-34" 38-54'-02" 

20 East bank of Anacostia immediately north of 

Benning Road Bridge 

17-A1 76-57'-38" 38-53'-52" 

21 East bank of Anacostia between East Capitol 

Street and Benning Road 

17-A2 76-57'-42" 38-53'-43"/53'-19" 

22 East bank of Anacostia between East Capitol 

Street and railroad bridge 

16-

K3,4/17-A3 

76-58'-11"/57'-16" 38-53'-18"/52'-53" 

23 Fort Dupont Park near rehabilitation center 17-A4 76-57'-42" 38-52'-53" 

24 Fort Dupont Park along F-Street parking area 17-A4 76-57'-20" 38-52'-52" 

25 Anacostia Park at Nicholson Street parking 

area 

16-H,J5 76-58'-39" 38-52'-28" 

26 Barney Circle and Water Street 16-H5 76-58'-39" 38-52'-44" 

27 Between Water Street and Anacostia, 700 

feet north of Sousa Bridge 

16-G5 76-59'-18" 38-52'-29" 

28 Fort Stanton Park, Good Hope Road opposite 

22nd Place 

16-J7 76-58'-35" 38-51'-50" 
29 Anacostia Park at 11th Street Bridge 16-H5 76-59'-16" 38-52'-16" 

30 East bank of Anacostia River opposite 

Washington Navy Yard 

16-E,F,G6 77-00'-09"/59'-07" 38-52'-24"/52'-11" 

31 Anacostia Park near old greenhouses 16-F7 76-59'-47" 38-51'-58" 

32 Anacostia Park near old greenhouses 16-E7 77-00'-04"/59'-56" 38-52'-06"/51'-55" 

33 St. Elizabeths Hospital along western property 

boundary 

16-G10 76-59'-15" 38-50'-47" 

34 Floodplain of Oxon Run east of Valley Avenue 16-G12 76-59'-17"/58'-58" 38-50'-17" 

35 Oxon Creek at I-295 bridge 22-A,B5 77-01'-24" 38-48'-14" 

36 Rock Creek Park between Beach and 

Parkside Drive 

3-H11 77-03'-11"/02'-39" 38-59'-10"/58'-54" 

37 Whitehaven Park 9-C11 77-04'-33" 38-54'-53" 

38 Glover-Archibald Park at Whitehaven 

Tributary 

9-C10 77-04'-55" 38-55'-03" 

39 Glover-Archibald Park at Reservoir Road 9-C11 77-04'-43" 38-54'48+" 

40 C&O Canal Park at Chain Bridge 8-H8,9 77-06'-53"/06'-12" 38-56'-03"/55'-15" 

41 C&O Canal Park south of Fletchers 

Boathouse 

8-K11 77-06'-03" 38-54'-49" 

42 East side of Roosevelt Island 15-E1 77-03'-41"/03'-32" 38-53'-56"/53'-12" 

43 Roosevelt Island south of Memorial Bridge 15-E1 77-03'-33" 38-53'-26" 

44 West side of Roosevelt Island 15-E1 77-03'-51" 38-53'-43" 

45 Potomac River at Boundary Channel and 

Memorial Bridge 

15-E2 77-03'-48" 38-53'-27" 

46 South Dakota & Hamilton Avenue at Riggs 

Plaza Apts. 

10-E4 77-00'-00" 38-57'-15" 

47 Soldiers and Sailors Home 10-C7 77-00'-58" 38-56'-12" 

48 Soldiers and Sailors Home 10-B8 77-01'-04" 38-55'-59" 
ATTACHMENT 3 

Wetland Boundary Plan 

Project 04121197 / February 4, 2005 Schnabel Engineering North, LLC


ATTACHMENT 4 

Corps Data Sheets 

Project 04121197 / February 4, 2005 Schnabel Engineering North, LLC
Project/Site: Date:

Applicant/Owner: County:

Investigator: State:

Do Normal Circumstances exist on the site? Yes No Community ID:

Is the site significantly disturbed (Atypical Situation)? Yes No Transect ID:

Is the area a potential problem area? Yes No Plot ID:

(If needed, explain on reverse.)

VEGETATION

Indicator

1. 9.

2. 10.

3. 11.

4. 12.

5. 13.

6. 14.

7. 15.

8. 16.

Percent of Dominant Species that are OBL, FACW or FAC

(excluding FAC-)

Remarks:

HYDROLOGY

Recorded Data (Describe in Remarks): Wetland Hydrology Indicators:

Stream, Lake, or Tide Gauge Primary Indicators:

Aerial Photographs Inundated

Other Saturated in Upper 12 Inches

No Recorded Data Available Water Marks

Drift Lines

Sediment Deposits

Field Observations: Drainage Patterns in Wetlands

Secondary Indicators (2 or more required):

Depth of Surface Water: (in.) Oxidized Root Channels in Upper 12 Inches

Water-Stained Leaves

Depth to Free Water in Pit: (in.) Local Soil Survey Data

FAC-Neutral Test

Depth to Saturated Soil: (in.) Other (Explain in Remarks)

Remarks:

DATA FORM

ROUTINE WETLAND DETERMINATION

(1987 COE Wetlands Delineation Manual)

~20 feet away from Cyperus strigosus and Typha latifolia

Digitaria sanguinalis

Grass sp.

---

none

---

0?/1

---

Dominant Plant Species Stratum Indicator Dominant Plant Species Stratum

G

SP-1

G FACUmowed grass and fill

Sept. 22, 2004

DC

DC

Georgetown University Boathouse

Georgetown University

J. Rowan
SOILS

Map Unit Name Drainage Class:

(Series and Phase): Field Observations

 Confirm Mapped Type?

Taxonomy (Subgroup):

Profile Description

Depth Matrix Color Mottle Colors Mottle Texture, Concretions,

(inches) Horizon (Munsell Moist) (Munsell Moist) Abundance/Contrast Structure, etc.

A clay/silt, hard underneath

Hydric Soil Indicators:

Histosol Concretions

Histic Epipedon High Organic Content in Surface Layer in Sandy Soils

Sulfidic Odor Organic Streaking in Sandy Soils

Aquic Moisture Regime Listed on Local Hydric Soils List

Reducing Conditions Listed on National Hydric Soils List

Gleyed or Low-Chroma Colors Other (Explain in Remarks)

Remarks:

WETLAND DETERMINATION

Hydrophytic Vegetation Present?

Wetland Hydrology Present?

Hydric Soils Present? Is this Sampling Point Within a Wetland?

Remarks:

Udorthents

Refusal at 4 inches----Compacted Soil in this area is most likely fill.

Urban land

0-4 7.5 YR 3/2 --

 Yes No

 Yes No

 No

 No

 No

 Yes

 Yes

 Yes
Project/Site: Date:

Applicant/Owner: County:

Investigator: State:

Do Normal Circumstances exist on the site? Yes No Community ID:

Is the site significantly disturbed (Atypical Situation)? Yes No Transect ID:

Is the area a potential problem area? Yes No Plot ID:

(If needed, explain on reverse.)

VEGETATION

Indicator

1. 9.

2. 10.

3. 11.

4. 12.

5. 13.

6. 14.

7. 15.

8. 16.

Percent of Dominant Species that are OBL, FACW or FAC

(excluding FAC-)

Remarks:

HYDROLOGY

Recorded Data (Describe in Remarks): Wetland Hydrology Indicators:

Stream, Lake, or Tide Gauge Primary Indicators:

Aerial Photographs Inundated

Other Saturated in Upper 12 Inches

No Recorded Data Available Water Marks

Drift Lines

Sediment Deposits

Field Observations: Drainage Patterns in Wetlands

Secondary Indicators (2 or more required):

Depth of Surface Water: (in.) Oxidized Root Channels in Upper 12 Inches

Water-Stained Leaves

Depth to Free Water in Pit: (in.) Local Soil Survey Data

FAC-Neutral Test

Depth to Saturated Soil: (in.) Other (Explain in Remarks)

Remarks:

DATA FORM

ROUTINE WETLAND DETERMINATION

(1987 COE Wetlands Delineation Manual)

hummocks, shaded, Rubus sp. near edge, no woody seedlings

water filled into hole from beneath

Cyperus strigosus

Phalaris arundinacea

Agrostis alba

Setaria viridis

Grass sp.

surface

6

none

3/5 60%

FACW+

FACW

NL

---

Dominant Plant Species Stratum Indicator Dominant Plant Species Stratum

G

G

G

G

SP-3

G FACW

Sept. 22, 2004

DC

DC

Georgetown University Boathouse

Georgetown University

J. Rowan
SOILS

Map Unit Name Drainage Class:

(Series and Phase): Field Observations

 Confirm Mapped Type?

Taxonomy (Subgroup):

Profile Description

Depth Matrix Color Mottle Colors Mottle Texture, Concretions,

(inches) Horizon (Munsell Moist) (Munsell Moist) Abundance/Contrast Structure, etc.

A

Hydric Soil Indicators:

Histosol Concretions

Histic Epipedon High Organic Content in Surface Layer in Sandy Soils

Sulfidic Odor Organic Streaking in Sandy Soils

Aquic Moisture Regime Listed on Local Hydric Soils List

Reducing Conditions Listed on National Hydric Soils List

Gleyed or Low-Chroma Colors Other (Explain in Remarks)

Remarks:

WETLAND DETERMINATION

Hydrophytic Vegetation Present?

Wetland Hydrology Present?

Hydric Soils Present? Is this Sampling Point Within a Wetland?

Remarks:

Udorthents

Refusal at 12 inches---May be over 84 inch sewer main

Urban land

poorly drained

0-12 2.5Y 3/1 ---

 Yes No

 Yes No

 No

 No

 No

 Yes

 Yes

 Yes
ATTACHMENT 5 

Photographs 

Project 04121197 / February 4, 2005 Schnabel Engineering North, LLC
04121197 

PHOTOS

GEORGETOWN UNIVERSITY 

PROPOSED BOATHOUSE 

WASHINGTON, DC

PHOTO 1 – Location of 

SP-1. 9/04

PHOTO 2 – Location 

of SP-2. 9/04
04121197 

PHOTOS

GEORGETOWN UNIVERSITY 

PROPOSED BOATHOUSE 

WASHINGTON, DC

PHOTO 3 – Location of SP-3. 9/04

PHOTO 4 – Example of general hydric soils on the site (SP-3). 9/04
04121197 

PHOTOS

GEORGETOWN UNIVERSITY 

PROPOSED BOATHOUSE 

WASHINGTON, DC

PHOTO 6 – View of wetland area at WD-26. 9/04

PHOTO 5 – Location of wetland and sewer line. 9/04
04121197 

PHOTOS

GEORGETOWN UNIVERSITY 

PROPOSED BOATHOUSE 

WASHINGTON, DC

PHOTO 7 – View of wetland, looking south. 9/04 

PHOTO 8 – Northern end of wetland on the sewer line. 9/04
04121197 

PHOTOS

GEORGETOWN UNIVERSITY 

PROPOSED BOATHOUSE 

WASHINGTON, DC

PHOTO 10 – Southern shoreline of the Potomac River. 9/04

PHOTO 9 – Wet, swampy conditions just off the hiking path. 9/04
04121197 

PHOTOS

GEORGETOWN UNIVERSITY 

PROPOSED BOATHOUSE 

WASHINGTON, DC

PHOTO 12 – Submerged Aquatic Vegetation (SAV) assessment. 11/04

PHOTO 11 – Proposed boathouse location. 11/04
04121197 

PHOTOS

GEORGETOWN UNIVERSITY 

PROPOSED BOATHOUSE 

WASHINGTON, DC

PHOTO 14 – C&O Canal, upgradient and downstream of the site. 11/04

PHOTO 13 – C&O Canal, upgradient of the site. 11/04
04121197 

PHOTOS

GEORGETOWN UNIVERSITY 

PROPOSED BOATHOUSE 

WASHINGTON, DC

PHOTO 15 – Off-site SAV assessment (Spatterdock). 11/04
ATTACHMENT 6 

SAV Maps 2000-2003 

Species and Ground Surveyor Key 

SAV Bed 2000 Site 

Key for 2000 Comparison 

SAV Bed 2001 Site 

Key for 2001 Comparison 

SAV Bed 2002 Site 

2002 Verbal Account 

SAV Bed 2003 Site 

Key for 2003 SAV Comparison 

Project 04121197 / February 4, 2005 Schnabel Engineering North, LLC
Species and Ground Surveyor Key 

* Abbreviations under column "Species" are as follows: 

Zm - Zostera marina (eelgrass) 

Rm - Ruppia maritima (widgeon grass) 

C - Chara sp. (muskgrass) 

Cd - Ceratophyllum demersum (coontail) 

Cl - Callitriche sp. (water-starwort) 

Ec - Elodea canadensis (common elodea) 

Ed - Egeria densa (water-weed) 

Hd - Heteranthera dubia (water stargrass) 

Hv - Hydrilla verticillata (hydrilla) 

Ms - Myriophyllum spicatum (Eurasian watermilfoil) 

N - Najas sp. (naiad) 

Nfl - Najas flexilis (northern naiad) 

Ngr - Najas gracillima (slender naiad) 

Ngu - Najas guadalupensis (southern naiad) 

Nm - Najas minor (no common name) 

Nt - Nitella sp. (muskgrass) 

Pcr - Potamogeton crispus (curly pondweed) 

Pe - Potamogeton epihydrus (leafy pondweed) 

Pn - Potamogeton nodosus

Ppc - Stuckenia pectinata (sago pondweed)(Potamogeton pectinatus)

Ppf - Potamogeton perfoliatus (redhead-grass) 

Ppu - Potamogeton pusillus (slender pondweed) 

S - Sparganium sp. (bureed) 

Tn - Trapa natans (water chestnut) 

Va - Vallisneria americana (wild celery) 

Zp - Zannichellia palustris (horned pondweed) 

U - Unknown species composition 

** Abbreviations under column "Surveyor" are as follows: 

APG - Aberdeen Proving Ground 

BCDEPRM - Baltimore County Department of Environmental Protection and 

Resource Management 
CBF - Chesapeake Bay Foundation 

CBL - University of Maryland Center for Environmental ScienceChesapeake Biological Laboratory 

Citizen - Citizens Field Observation 

COG - Metropolitan Washington Council of Governments 

DCFWD - D.C. Fisheries and Wildlife Division 

HPEL - University of Maryland Center for Environmental Science-Horn 

Point Lab 

MD-DNR - Maryland Department of Natural Resources 

NOAA - National Oceanic and Atmospheric Administration 

NPS - National Park Service 

SMCM - St. Mary's College of Maryland 

USGS - United States Geological Survey 

VIMS - Virginia Institute of Marine Science 
Submerged Aquatic Vegetation 2000

(028) Washington West, Md.- D.C.- Va

Hectares of SAV: 94.00

Date Flown: 09/22

Sources: VIMS,USGS

1000 0 1000 2000 meters

2000 SAV 1999 SAV Both years
Washington West, Md.- D.C.- Va. -----2000 

(VIMS Map # 028) 

SAV Bed Area (m2)

A1 1,460

B4 1,491

C4 1,530

D4 4,735

E4 29,908

F1 4,643

G2 2,766

H4 68,270

I4 152,463

J3 4,244

K1 11,834

L2 6,296

M4 1,090

N4 2,188

O4 848

P4 131,964

Q4 1,385

R4 788

S4 653

T4 5,551

U4 4,401

V4 7,880

W4 4,793

X4 18,534

Y3 298

Density Area (m2)

(1) 0-10% 17,937

(2) 10-40% 9,062

(3) 40-70% 4,543

(4) 70-100% 438,471

Total: 470,013 

Species Reported: C. demersum, H. dubia, H. verticillata, M. spicatum, N. guadalupensis, N. minor, 

V. americana 

Segment 2000 Bed Species Surveyor Survey Date

POTTF Northwest A1 Hd, Hv, Ms DCFWD 09/13/00 

 H4 Ngu, Hv, Nm, Hd, Cd, Ms DCFWD 09/13/00 

 I4 Hv, Hd DCFWD 09/13/00 

 P4 Hv, Hd, Cd, Nm, Ngu, Ms DCFWD 09/13/00 

 P4 Hv, Hd, Nm, Ngu DCFWD 09/13/00 

 P4 Hv, Hd, Nm DCFWD 09/13/00 

Key for 2000 

Comparison 
 O4 Hv, Hd DCFWD 09/12/00 

 Southeast of W4 Hd, Hv DCFWD 09/12/00 

 Northwest of X4 Hd DCFWD 09/12/00 

 Northwest of X4 Hd DCFWD 09/12/00 

 Northwest of X4 Hd, Hv DCFWD 09/12/00 

 East of X4 Hv, Hd DCFWD 09/12/00 

 North of W4 Hv, Hd DCFWD 09/12/00 

 West of U4 Hv, Hd DCFWD 09/12/00 

 U4 Hv, Hd DCFWD 09/12/00 

 T4 Hv, Hd DCFWD 09/12/00 

 S4 Hv DCFWD 09/12/00 

 South of Q4 Hv, Hd, Ms DCFWD 09/12/00 

 L2 Hd, Hv, Ms DCFWD 09/12/00 

 F1 Ms, Hd, Va DCFWD 09/12/00 

 E4 Hd, Ms, Cd, Hv, Va, Nm, Ngu DCFWD 09/12/00 

 B4 Ms, Cd, Hv, Hd, Nm, Va DCFWD 09/12/00 
Submerged Aquatic Vegetation 2001

(028) Washington West, Md.- D.C.- Va

Hectares of SAV: 34.54

Date Flown: 09/08

Sources: VIMS,USGS

1000 0 1000 2000 meters

2001 SAV Density Class

0-10% 10-40% 40-70% 70-100%
Alexandria, Va.- D.C.- Md. 

(VIMS Map # 034) 

Key for 2001 

Comparison SAV Bed Area (m2)

A4 16,605

B3 17,320

C4 34,597

D4 60,837

E4 621,942

F4 31,395

G4 11,193

H4 8,260

I4 1,971

J4 46,256

K4 6,401

L4 60,892

M2 9,959

N4 3,599

O4 5,284

P2 79,228

Q4 41,195

R4 180,261

S4 63,397

T4 1,145,084

U4 29,558

V4 12,028

W4 3,134

X4 41,066

Y3 5,563

Z3 24,583

AA4 4,553

BA4 5,272

CA4 4,054

DA4 29,603

EA4 7,608

FA3 344,937

GA4 816,993

HA2 297,964

IA4 509,336

JA4 959,640

KA4 12,894

LA4 34,299

MA4 10,427

NA4 207,186

OA2 11,895

PA1 30,775
Density Area (m2

)

(1) 0-10% 30,775

(2) 10-40% 399,045

(3) 40-70% 392,403

(4) 70-100% 5,026,821

Total: 5,849,044 

Species Reported: C. demersum, H. dubia, H. verticillata, M. spicatum, N. guadalupensis, N. minor, 

V. americana 

Segment 2001 Bed Species Surveyor Survey Date 

POTTF T4 Cd, Ms, Hv, Va DCFWD 10/10/01, 10/15/01

 West of T4 Cd, Ms, Hv, Hd, Va, Ngu DCFWD 10/10/01, 10/15/01

 T4 Ms, Hv, Cd DCFWD 10/10/01, 10/15/01

 T4 Cd, Ms, Hv, Hd, Va, Ngu DCFWD 10/10/01, 10/15/01

 East of T4 Va, Hv, Cd, Ms, Ngu DCFWD 10/10/01, 10/15/01

 East of T4 Cd, Ms, Hv, Va DCFWD 10/10/01, 10/15/01

 West of CA4 Hv, Ms, Cd, Va DCFWD 10/10/01, 10/15/01

 Slightly west of CA4 Hv, Ms DCFWD 10/10/01, 10/15/01

 West of AA4 Hv, Ms, Cd, Va DCFWD 10/10/01, 10/15/01

 X4 Hv, Hd, Va, Ms, Cd DCFWD 10/10/01, 10/15/01

 Slightly west of AA4 Hv, Hd, Va, Ms, Cd DCFWD 10/10/01, 10/15/01

 Border of W4 Hv DCFWD 10/10/01, 10/15/01

 East of W4 Hv DCFWD 10/10/01, 10/15/01

 East of U4 Hv, Cd, Ms, Hd, Va DCFWD 10/10/01, 10/15/01

 U4 Hv, Cd, Ms, Hd, Va DCFWD 10/10/01, 10/15/01

 R4 Ms, Hv, Cd DCFWD 10/10/01, 10/15/01

 R4 Ms, Hv DCFWD 10/10/01, 10/15/01

 L4 Ms, Cd, Hv, Hd, Va DCFWD 10/10/01, 10/15/01

 Slightly west of L4 Va, Ms, Hv, Hd, Cd DCFWD 10/10/01, 10/15/01

 L4 Hv, Va, Cd, Ms DCFWD 10/10/01, 10/15/01

 West of F4 Va, Hd, Cd, Hv, Ms DCFWD 10/10/01, 10/15/01

 West of F4 Va, Ms, Hv, Hd DCFWD 10/10/01, 10/15/01

 North of F4 Va, Ms, Hv, Hd DCFWD 10/10/01, 10/15/01

 South shore of Anacostia River Va, Hd DCFWD 10/10/01, 10/15/01

 South shore of Anacostia River Va DCFWD 09/28/01 

 South shore of Anacostia River Va DCFWD 09/28/01 

 North shore of Anacostia River Hv DCFWD 09/28/01 

 North shore of Anacostia River Hv, Cd DCFWD 09/28/01 

 North shore of Anacostia River Va, Hv DCFWD 09/28/01 
 North shore of Anacostia River Va, Hv DCFWD 09/28/01 

 Mouth of Anacostia River Hv DCFWD 09/26/01 

 West of bed B3 Va, Hv, Cd DCFWD 09/28/01 

 Upper portion of Potomac River Va DCFWD 09/26/01 

 Upper portion of Potomac River Va DCFWD 09/26/01 

 West of C4 Cd, Ms, Hv, Va, Hd DCFWD 09/26/01 

 West of E4 Hv, Hd, Cd DCFWD 09/26/01 

 West of E4 Hv, Hd, Ms, Cd DCFWD 09/26/01 

 West of E4 Ms, Hd, Hv, Cd, Va, Ngu DCFWD 09/26/01 

 E4 Cd, Ms, Hv, Hd, Va, Ngu DCFWD 10/10/01, 10/15/01

 E4 Cd, Ms, Hv DCFWD 10/10/01, 10/15/01

 E4 Cd, Hv, Hd, Ms, Ngu DCFWD 10/10/01, 10/15/01

 West of E4 Hv, Cd DCFWD 10/10/01, 10/15/01

 West of J4 Hv, Ms, Cd, Va DCFWD 10/10/01, 10/15/01

 West of K4 Hv, Cd, Va DCFWD 10/10/01, 10/15/01

 West of O4 Hv, Va, Cd, Hd DCFWD 10/10/01, 10/15/01

 Q4 Ms, Hv, Cd, Va DCFWD 10/10/01, 10/15/01

 West of Q4 Ms, Va, Hv, Cd, Ngu, Hd DCFWD 10/10/01, 10/15/01

 North of S4 Va, Ms, Hd DCFWD 10/10/01, 10/15/01

 West of S4 Ms, Cd, Hv, Hv, Ngu, Va, Hd DCFWD 10/10/01, 10/15/01

 S4 Hv, Hd, Ms DCFWD 10/10/01, 10/15/01

 West of V4 Hd, Va, Ms, Hv, Ngu DCFWD 10/10/01, 10/15/01

 West of Y3 Hv, Ms, Va DCFWD 10/10/01, 10/15/01

 Between beds Z3 and FA3 Ms, Hv, Va, Cd DCFWD 10/10/01, 10/15/01

 North of FA3 Ms, Hd DCFWD 10/10/01, 10/15/01

 Between beds NA4 and IA4 Ms, Cd DCFWD 10/10/01, 10/15/01

 IA4 Hv, Ms, Cd, Nm, Ngu, Hd USGS 08/29/01 

 IA4 Hv, Ngu, Ms, Va, Cd, Hd USGS 08/29/01 

 OA2 Hv, Nm, Ngu, Ms, Cd, Va, Hd USGS 08/29/01 

 West of IA4 Hv, Ngu, Va, Nm, Ms, Cd, Hd USGS 08/29/01 

 IA4 Hv, Ms, Va, Cd, Nm, Ngu, Hd USGS 08/29/01 

 IA4 Hv, Va, Nm, Ngu, Hd, Ms, Cd USGS 08/29/01 

 West of IA4 Nm, Va, Hv, Ngu, Cd, Ms, Hd USGS 08/29/01 

 West of IA4 Hv, Nm, Ngu, Ms, Va, Cd, Hd USGS 08/29/01 

 IA4 Hv, Nm, Cd, Ngu, Va, Hd, Ms USGS 08/29/01 

 West of IA4 Va, Nm, Hv, Hd, Cd, Ms, Ngu USGS 08/29/01 

 IA4 Va, Hv, Cd, Nm, Ngu, Ms, Hd USGS 08/29/01 

 West of IA4 Cd, Hv, Ngu, Ms, Hd, Va, Nm USGS 08/29/01 

 GA4 Cd, Hv, Ms, Va, Ngu, Hd USGS 08/29/01 

 IA4 Hv, Ms, Cd, Ngu, Hd USGS 08/29/01 
 West of IA4 Hv, Ms, Ngu, Cd, Va, Nm, Hd USGS 08/29/01 

 West of IA4 Ms, Ngu, Hv, Cd, Hd USGS 08/29/01 

 North of IA4 Ngu, Hv, Hd, Ms USGS 08/29/01 

 West of DA4 Hv, Ngu, Cd, Ms, Hd USGS 08/29/01 

 West of EA4 Hv, Ngu, Cd, Hd, Nm USGS 08/29/01 

 Between beds T4 and GA4 Cd, Hv, Nm, Ngu, Ms, Hd USGS 08/29/01 

 GA4 Cd, Hv, Ms, Va, Ngu, Hd USGS 08/29/01 

 GA4 Cd, Hv, Ms, Va, Ngu, Hd USGS 08/29/01 

 Border of GA4 Ms, Va, Hv, Cd, Hd, Nm, Ngu USGS 08/29/01 

 Border of GA4 Hv, Ms, Va, Cd, Nm, Ngu, Hd USGS 08/29/01 

 Off southwest tip of GA4 Nm, Va, Hv, Ms, Cd, Hd, Ngu USGS 08/29/01 

 Off southwest tip of GA4 Va, Nm, Ngu, Hv, Hd, Ms, Cd USGS 08/29/01 

 Slightly west of IA4 Ms, Hv, Cd, Ngu, Va, Nm USGS 08/29/01 

 JA4 Hv, Ngu, Ms, Hd, Va, Cd USGS 08/29/01 

 JA4 Hv, Ms, Cd, Hd USGS 08/29/01 

 West of KA4 Hv, Cd, Nm, Ms USGS 08/29/01 

 NA4 Ngu, Nm, Cd, Hv, Ms, Hd USGS 08/29/01 

 NA4 Hv, Cd, Ngu, Nm, Ms USGS 08/29/01 

 Border of NA4 Ngu, Cd, Hv, Nm, Hd, Va, Ms USGS 08/29/01 

 NA4 Va, Hv, Ngu, Ms, Hd USGS 08/29/01 

 NA4 Cd, Hv, Va, Nm, Ms, Ngu USGS 09/04/01 

 NA4 Ngu, Cd, Hv, Nm, Hd, Va, Ms USGS 08/29/01 

 South of NA4 Va, Hv, Ngu, Ms, Hd USGS 08/29/01 
Submerged Aquatic Vegetation 2002

(028) Washington West, Md.- D.C.- Va

Hectares of SAV: 27.26

Date Flown: 11/03

Sources: VIMS,USGS

1000 0 1000 2000 meters

2002 SAV 2001 SAV Both years
Verbal Account 

for 2002 

In 2002, 1,483.71 ha was mapped for POTTF. This segment accounted for 6.9% of the Middle 

Bay Zone and 4.1% of the Bay total. The 2010 restoration goal (1,768.29 ha) was not met for 

POTTF. 

Due to flight restrictions following the events of September 11, only a portion (40%) of the area 

mapped in 2002 for POTTF was mapped in 2001. When comparing the same regions for both 

years SAV decreased 5%, from 619.45 ha reported in 2001 to 589.77 ha reported in 2002. In 

2002, in the section of POTTF below Swan Creek, SAV decreased 5% from the 2000 levels 

(1,569.84 ha), the last time this segment was fully mapped. 

In 2002, SAV decreased from the 2001 levels on the west side of Theodore Roosevelt Island 

(Map 028); in the waterfowl sanctuary near Washington National Airport (Map 034); off 

Daingerfield Island (Map 034); and in Broad Creek (Map 040). SAV increased in portions of 

Broad Creek and in portions of Swan Creek (Map 040). No photography was available for either 

shore of the Potomac River below Swan Creek in 2001. 

In 2002, SAV decreased from the 2000 levels in portions of Accotink Bay (Map 039); at the 

mouth of Dogue Creek (Map 040); to the north of Neabsco Creek (Map 047); and in Quantico 

and Chicamuxen creeks (Maps 047, 048). 

SAV increased over the 2000 levels on the western shore of the Potomac River in Gunston Cove 

and to the north of Whitestone Point (Map 039); in Accotink Bay (Map 039); above and below 

Hallowing Point (Map 039); in Belmont Bay (Map 039); and south of Cockpit Point and in 

Quantico Creek (Map 047). New SAV beds were mapped in Little Hunting Creek, at the mouth 

of Little Hunting Creek, and in Powell Creek (Maps 040, 047). On the eastern shore of the 

Potomac River, SAV expanded in 2002 over 2000 levels from Swan Creek to Pomonkey Point 

and in Pomonkey Creek (Map 040). 
Submerged Aquatic Vegetation 2003

(028) Washington West, Md.- D.C.- Va

Hectares of SAV: 0.00

Date Flown: 11/04

Sources: VIMS,USGS

1000 0 1000 2000 meters

2003 SAV Density Class

0-10% 10-40% 40-70% 70-100%
Washington West, Md.- D.C.- Va. -------2003 

(VIMS Map # 028) Key for 2003 

Comparison No SAV Beds were mapped. 

Species Reported: H. verticillata, V. americana 

Segment 2003 Bed Species Surveyor Survey Date

POTTF West of Tidal Basin Va DCFWD 10/7/2003 

 West of Tidal Basin Va DCFWD 10/7/2003 

 East of Theodore Roosevelt Island Hv DCFWD 10/7/2003 

 West of Theodore Roosevelt Island Hv DCFWD 10/7/2003 

 West of Theodore Roosevelt Island Hv DCFWD 10/7/2003 

 South of Theodore Roosevelt Island Hv DCFWD 10/7/2003 
ATTACHMENT 7 

Tidal Gauge Data 

Tide Gauge Details 

Monthly Maximum 

Daily Maximum 

Project 04121197 / February 4, 2005 Schnabel Engineering North, LLC
USGS 01647600 POTOMAC RIVER AT WISCONSIN AVE, 

WASHINGTON, DC

STATION.--01647600 POTOMAC RIVER AT WISCONSIN AVE., WASHINGTON, D.C.

LOCATION.--Lat 38°54'08.4", long 77°03'45.9", District of Columbia, Hydrologic Unit 02070010,

 on left bank at foot of Wisconsin Ave. (Georgetown), 0.35 mi upstream from mouth of Rock 

 Creek, 0.4 mi downstream from Key Bridge, and at river mile 112.2.

DRAINAGE AREA.--N/A.

PERIOD OF RECORD. --April 1935 to current year.

GAGE.--Water-stage recorder. Datum of gage is Washington Mean Low Water

 (Washington Mean Low Water = Mean Sea Level + 1.41 ft). 

EXTREMES FOR PERIOD OF RECORD. --Maximum tidal gage height, 17.72 ft (D.C. MLW), 

 Oct. 17, 1942.

COOPERATION.--Funding for the operation of this station is provided by the U.S. Army Corps of

 Engineers, and the U.S. Geological Survey.

EPA Surf your Watershed GO
DATE MAXIMUM MSL(WML-1.41=MSL)

2/1/2003 2.46

3/9/2003 3.83

3/22/2003 4.92

4/19/2003 3.77

5/18/2003 4.56

7/11/2003 3.75

7/30/2003 3.34

9/13/2003 4.32

9/19/2003 9.86

10/29/2003 3.63

12/12/2003 5.44

12/24/2003 3.53

2/9/2004 3.04

3/12/2004 3.57

4/4/2004 3.55

5/9/2004 2.73

6/5/2004 3.70

7/4/2004 3.00

7/27/2004 3.34

9/15/2004 3.38

9/30/2004 5.15

10/24/2004 3.78

12/11/2004 4.30

1/13/2005 3.76

AVERAGE 4.029583333

MONTHLY MAXIMUM MSL

1/15/2003 to 1/15/2005
Agency Site # Date Max. Gauge 

Height (ft)

Min. 

Gauge 

Height (ft)

Mean 

Gauge 

Height (ft)

Average Max. 

MSL from 15th to 

15th (WML1.41=MSL)

USGS 1.54

USGS 1.65

USGS 1.69

USGS 1.38

USGS 2.4

USGS 1.91

USGS 1.42

USGS 1.07

USGS 0.11

USGS

USGS

USGS 2.29

USGS 0.63

USGS 1.61

USGS 2.06

USGS 1.49

USGS 1647600 1/31/2003 3.55 0.24 1.84

USGS 1647600 2/1/2003 3.87 0.58 2.21 2.46

USGS 1647600 2/2/2003 3.78 0.66 2.16

USGS 1647600 2/3/2003 3.46 0.38 1.97

USGS 1647600 2/4/2003 3.21 0.27 1.71

USGS 1647600 2/5/2003 2.68 -0.1 1.27

USGS 1647600 2/6/2003 2.53 -0.23 1.14

USGS 1647600 2/7/2003 2.58 -0.05 1.23

USGS 1647600 2/8/2003 2.88 0.46 1.62

USGS 1647600 2/9/2003 3.1 0.39 1.71

USGS 1647600 2/10/2003 2.69 0.17 1.38

USGS 1647600 2/11/2003 2.98 -0.11 1.52

USGS 1647600 2/12/2003 2.72 -0.13 1.32

USGS 1647600 2/13/2003 2.18 -0.26 1

USGS 1647600 2/14/2003 2.72 -0.43 1.07

USGS 1647600 2/15/2003 2.94 -0.4 1.31

USGS 1647600 2/16/2003 3.48 -0.24 1.68

USGS 1647600 2/17/2003 3.98 0.79 2.41

USGS 1647600 2/18/2003 4.4 0.71 2.43

USGS 1647600 2/19/2003 4.25 0.86 2.54

USGS 1647600 2/20/2003 3.73 0.5 2.09

USGS 1647600 2/21/2003 3.57 0.33 1.94

USGS 1647600 2/22/2003 4.54 0.61 2.66

USGS 1647600 2/23/2003 5 2.03 3.39

USGS 1647600 2/24/2003 4.88 2.49 3.49

USGS 1647600 2/25/2003

USGS 1647600 2/26/2003 3.82 1.87 2.81

USGS 1647600 2/27/2003 4.39 1.81 3.02

USGS 1647600 2/28/2003 4.38 1.76 3.01

USGS 1647600 3/1/2003 4.7 1.8 3.2

USGS 1647600 3/2/2003 4.39 1.49 2.94

USGS 1647600 3/3/2003 3.49 0.75 2.29

USGS 1647600 3/4/2003 4.13 1.32 2.69

USGS 1647600 3/5/2003 3.97 1.42 2.66

USGS 1647600 3/6/2003 4.16 1.4 2.68

USGS 1647600 3/7/2003 5.23 1.83 3.61

USGS 1647600 3/8/2003 5.22 3.35 4.37

USGS 1647600 3/9/2003 5.24 2.72 3.8 3.83

USGS 1647600 3/10/2003 4.27 2.58 3.34

USGS 01647600 POTOMAC RIVER AT WISCONSIN AVE, WASHINGTON, DC

Data is in Washington Mean Low

Page 1 of 13
Agency Site # Date Max. Gauge 

Height (ft)

Min. 

Gauge 

Height (ft)

Mean 

Gauge 

Height (ft)

Average Max. 

MSL from 15th to 

15th (WML1.41=MSL)

USGS 1647600 3/11/2003 4.67 2.97 3.91

USGS 1647600 3/12/2003 4.06 2.06 3.16

USGS 1647600 3/13/2003 3.49 1.36 2.49

USGS 1647600 3/14/2003 4.14 1.32 2.7

USGS 1647600 3/15/2003 5.05 2.63 3.75

USGS 1647600 3/16/2003 4.35 1.91 3.12

USGS 1647600 3/17/2003 4.53 1.81 3.18

USGS 1647600 3/18/2003 4.86 1.86 3.36

USGS 1647600 3/19/2003 5.5 2 3.76

USGS 1647600 3/20/2003 6.28 2.63 4.24

USGS 1647600 3/21/2003 6.27 3.47 4.77

USGS 1647600 3/22/2003 6.33 4.19 5.18 4.92

USGS 1647600 3/23/2003 5.45 2.77 4.1

USGS 1647600 3/24/2003 4.68 2.17 3.43

USGS 1647600 3/25/2003 4.56 2.03 3.27

USGS 1647600 3/26/2003 4.4 1.5 3.27

USGS 1647600 3/27/2003 3.9 1.25 2.56

USGS 1647600 3/28/2003 4.16 1.55 2.89

USGS 1647600 3/29/2003 4.34 1.63 3.04

USGS 1647600 3/30/2003 3.64 0.54 1.93

USGS 1647600 3/31/2003 2.43 -0.11 1.09

USGS 1647600 4/1/2003 3.69 0.81 2.32

USGS 1647600 4/2/2003 3.6 0.95 2.23

USGS 1647600 4/3/2003 3.9 0.94 2.51

USGS 1647600 4/4/2003 4.45 1.58 2.98

USGS 1647600 4/5/2003 4.8 2.03 3.43

USGS 1647600 4/6/2003 4.03 1.37 2.67

USGS 1647600 4/7/2003 4.23 1.39 2.84

USGS 1647600 4/8/2003 3.99 1.57 2.75

USGS 1647600 4/9/2003 4.91 2.58 3.63

USGS 1647600 4/10/2003 5.79 2.85 3.96

USGS 1647600 4/11/2003 6.13 3.44 4.77

USGS 1647600 4/12/2003 4.86 2.79 3.76

USGS 1647600 4/13/2003 5.6 2.97 4.37

USGS 1647600 4/14/2003 4.77 2.3 3.59

USGS 1647600 4/15/2003 4.58 1.79 3.26

USGS 1647600 4/16/2003 4.29 1.19 2.73

USGS 1647600 4/17/2003 4.04 0.74 2.52

USGS 1647600 4/18/2003 4.88 1.6 3.32

USGS 1647600 4/19/2003 5.18 1.76 3.29 3.77

USGS 1647600 4/20/2003 4.69 1.42 2.95

USGS 1647600 4/21/2003 4.89 1.56 3.16

USGS 1647600 4/22/2003 4.78 1.62 3.17

USGS 1647600 4/23/2003 3.7 0.65 1.98

USGS 1647600 4/24/2003 3.2 1.06 2.03

USGS 1647600 4/25/2003 4.2 1.42 2.69

USGS 1647600 4/26/2003 4.51 1.57 3.23

USGS 1647600 4/27/2003 4.35 1.53 2.89

USGS 1647600 4/28/2003 4.21 1.35 2.74

USGS 1647600 4/29/2003 4.05 1.14 2.55

USGS 1647600 4/30/2003 3.76 0.88 2.35

USGS 1647600 5/1/2003 4.24 1.35 2.85

USGS 1647600 5/2/2003 4.52 1.35 2.86

USGS 1647600 5/3/2003 4.19 1.01 2.62

USGS 1647600 5/4/2003 4.59 1.79 3.09

USGS 1647600 5/5/2003 4.38 1.78 3.06

USGS 1647600 5/6/2003 4.51 1.5 2.93

USGS 1647600 5/7/2003 4.04 1.33 2.67

USGS 1647600 5/8/2003 4.19 1.64 2.78

USGS 1647600 5/9/2003 4.37 1.87 3.02

Page 2 of 13
Agency Site # Date Max. Gauge 

Height (ft)

Min. 

Gauge 

Height (ft)

Mean 

Gauge 

Height (ft)

Average Max. 

MSL from 15th to 

15th (WML1.41=MSL)

USGS 1647600 5/10/2003 4.33 1.67 3.01

USGS 1647600 5/11/2003 4.84 2.09 3.43

USGS 1647600 5/12/2003 4.8 2.71 3.91

USGS 1647600 5/13/2003 4.81 1.52 3.16

USGS 1647600 5/14/2003 4.48 1.3 2.85

USGS 1647600 5/15/2003 4.92 1.41 3.24

USGS 1647600 5/16/2003 5.73 2.16 4.07

USGS 1647600 5/17/2003 5.95 3.38 4.7

USGS 1647600 5/18/2003 5.97 3.04 4.4 4.56

USGS 1647600 5/19/2003 4.83 2.03 3.4

USGS 1647600 5/20/2003 4.64 1.91 3.22

USGS 1647600 5/21/2003 4.63 1.98 3.22

USGS 1647600 5/22/2003 4 1.54 2.73

USGS 1647600 5/23/2003 4.25 1.9 3.05

USGS 1647600 5/24/2003 4.36 1.84 3.14

USGS 1647600 5/25/2003 4.64 2.32 3.6

USGS 1647600 5/26/2003 5.14 2 3.62

USGS 1647600 5/27/2003 4.46 1.87 3.26

USGS 1647600 5/28/2003 4.76 1.99 3.2

USGS 1647600 5/29/2003 4.35 1.74 3.04

USGS 1647600 5/30/2003 4.2 1.66 2.93

USGS 1647600 5/31/2003 4.71 1.83 3.4

USGS 1647600 6/1/2003 3.46 0.04 2.01

USGS 1647600 6/2/2003 3.86 1.02 2.41

USGS 1647600 6/3/2003 4.25 1.6 2.88

USGS 1647600 6/4/2003 4.68 1.94 3.28

USGS 1647600 6/5/2003 5.23 3.19 4.12

USGS 1647600 6/6/2003 4.83 2.36 3.66

USGS 1647600 6/7/2003 5.14 2.55 3.72

USGS 1647600 6/8/2003 4.85 2.93 3.86

USGS 1647600 6/9/2003 5.42 2.95 4.32

USGS 1647600 6/10/2003 5.29 2.61 4

USGS 1647600 6/11/2003 5.11 2.36 3.67

USGS 1647600 6/12/2003 4.8 1.98 3.44

USGS 1647600 6/13/2003 5.06 1.95 3.47

USGS 1647600 6/14/2003 5.07 1.89 3.61

USGS 1647600 6/15/2003 5.06 2.15 3.58

USGS 1647600 6/16/2003 4.87 2.02 3.45

USGS 1647600 6/17/2003 5.29 2.29 3.72

USGS 1647600 6/18/2003 5.02 2.03 3.47

USGS 1647600 6/19/2003 4.84 2.2 3.47

USGS 1647600 6/20/2003 5.01 2.4 3.6

USGS 1647600 6/21/2003 4.64 2.16 3.28

USGS 1647600 6/22/2003 4.46 2.91 3.65

USGS 1647600 6/23/2003 4.98 2.44 3.73

USGS 1647600 6/24/2003 4.68 1.99 3.35

USGS 1647600 6/25/2003 4.57 1.76 3.19

USGS 1647600 6/26/2003 4.54 1.74 3.11

USGS 1647600 6/27/2003 4.62 1.73 3.08

USGS 1647600 6/28/2003 4.2 1.4 2.78

USGS 1647600 6/29/2003 4.61 1.61 3.05

USGS 1647600 6/30/2003 4.49 1.32 2.8

USGS 1647600 7/1/2003 4.23 0.97 2.59

USGS 1647600 7/2/2003 4.51 1.28 2.85

USGS 1647600 7/3/2003 5.03 1.66 3.31

USGS 1647600 7/4/2003 4.22 1.15 2.67

USGS 1647600 7/5/2003 4.28 1.18 2.67

USGS 1647600 7/6/2003 4.05 0.84 2.35

USGS 1647600 7/7/2003 4 1.25 2.6

USGS 1647600 7/8/2003 4.17 1.06 2.61

Page 3 of 13
Agency Site # Date Max. Gauge 

Height (ft)

Min. 

Gauge 

Height (ft)

Mean 

Gauge 

Height (ft)

Average Max. 

MSL from 15th to 

15th (WML1.41=MSL)

USGS 1647600 7/9/2003 4.29 1.22 2.77

USGS 1647600 7/10/2003 4.3 1.21 2.79

USGS 1647600 7/11/2003 5.16 1.74 3.55 3.75

USGS 1647600 7/12/2003 5.09 1.5 3.12

USGS 1647600 7/13/2003 4.67 1.12 2.79

USGS 1647600 7/14/2003 4.39 1.11 2.79

USGS 1647600 7/15/2003 4.44 1.09 2.78

USGS 1647600 7/16/2003 4.74 1.39 3.03

USGS 1647600 7/17/2003 3.91 0.63 2.27

USGS 1647600 7/18/2003 4.28 1.07 2.57

USGS 1647600 7/19/2003 3.99 1.22 2.55

USGS 1647600 7/20/2003 4.14 1.3 2.72

USGS 1647600 7/21/2003 4.37 1.96 3.16

USGS 1647600 7/22/2003 4.47 1.69 2.98

USGS 1647600 7/23/2003 3.79 1.37 2.51

USGS 1647600 7/24/2003 4.02 1.02 2.54

USGS 1647600 7/25/2003 3.49 0.58 2.04

USGS 1647600 7/26/2003 3.7 0.84 2.41

USGS 1647600 7/27/2003 3.95 1 2.36

USGS 1647600 7/28/2003 3.53 0.7 2.06

USGS 1647600 7/29/2003 4 0.58 2.31

USGS 1647600 7/30/2003 4.75 1.36 3.02 3.34

USGS 1647600 7/31/2003 4.25 0.93 2.56

USGS 1647600 8/1/2003 4.75 1.26 2.94

USGS 1647600 8/2/2003 4.42 1.08 2.77

USGS 1647600 8/3/2003 4.6 1.22 2.81

USGS 1647600 8/4/2003 4.6 1.07 2.77

USGS 1647600 8/5/2003 4.51 1.05 2.65

USGS 1647600 8/6/2003 4.2 1.08 2.56

USGS 1647600 8/7/2003 4.45 1.2 2.78

USGS 1647600 8/8/2003 4.4 0.98 2.62

USGS 1647600 8/9/2003 4.32 0.98 2.87

USGS 1647600 8/10/2003 4.7 1.36 2.97

USGS 1647600 8/11/2003 4.54 1.1 2.82

USGS 1647600 8/12/2003 4.54 1.07 2.76

USGS 1647600 8/13/2003 4.44 1.02 2.71

USGS 1647600 8/14/2003 4.23 0.93 2.54

USGS 1647600 8/15/2003 3.9 0.71 2.27

USGS 1647600 8/16/2003 4.32 1.04 2.66

USGS 1647600 8/17/2003 4.54 1.42 2.88

USGS 1647600 8/18/2003 4.56 1.27 2.64

USGS 1647600 8/19/2003 4.64 1.81 3.06

USGS 1647600 8/20/2003 4.44 1.48 2.78

USGS 1647600 8/21/2003 3.93 1.19 2.54

USGS 1647600 8/22/2003 3.92 1.3 2.66

USGS 1647600 8/23/2003 3.74 0.7 2.19

USGS 1647600 8/24/2003 3.59 0.96 2.45

USGS 1647600 8/25/2003 4.36 1.2 2.79

USGS 1647600 8/26/2003 4.02 0.63 2.31

USGS 1647600 8/27/2003 4.55 0.97 2.71

USGS 1647600 8/28/2003 4.48 0.8 2.64

USGS 1647600 8/29/2003 4.6 0.91 2.76

USGS 1647600 8/30/2003 4.48 0.98 2.6

USGS 1647600 8/31/2003 4.19 0.55 2.25

USGS 1647600 9/1/2003 4.72 1.21 2.87

USGS 1647600 9/2/2003 4.71 1.02 2.65

USGS 1647600 9/3/2003 5 1.18 2.97

USGS 1647600 9/4/2003 5.25 2.08 3.49

USGS 1647600 9/5/2003 4.97 0.9 2.8

USGS 1647600 9/6/2003 4.13 1.1 2.77

Page 4 of 13
Agency Site # Date Max. Gauge 

Height (ft)

Min. 

Gauge 

Height (ft)

Mean 

Gauge 

Height (ft)

Average Max. 

MSL from 15th to 

15th (WML1.41=MSL)

USGS 1647600 9/7/2003 4.79 1.5 3.25

USGS 1647600 9/8/2003 4.75 1.39 3.07

USGS 1647600 9/9/2003 4.87 1.31 3.21

USGS 1647600 9/10/2003 5.12 1.89 3.51

USGS 1647600 9/11/2003 4.98 1.77 3.38

USGS 1647600 9/12/2003 4.76 1.46 3.03

USGS 1647600 9/13/2003 5.73 2.25 3.85 4.32

USGS 1647600 9/14/2003 4.9 1.63 3.31

USGS 1647600 9/15/2003 4.66 1.38 2.9

USGS 1647600 9/16/2003 4.46 0.95 2.42

USGS 1647600 9/17/2003 4.29 1.41 2.71

USGS 1647600 9/18/2003 8.65 1.6 3.46

USGS 1647600 9/19/2003 11.27 4.5 7.06 9.86

USGS 1647600 9/20/2003 5.88 3.75 4.75

USGS 1647600 9/21/2003 7.23 4.53 6.39

USGS 1647600 9/22/2003 5.79 3.5 4.62

USGS 1647600 9/23/2003 7.13 3.48 6.1

USGS 1647600 9/24/2003 6.37 4.71 5.55

USGS 1647600 9/25/2003 5.94 3.11 4.65

USGS 1647600 9/26/2003 5.46 2.32 3.96

USGS 1647600 9/27/2003 5.66 2.2 3.91

USGS 1647600 9/28/2003 5.31 1.71 3.57

USGS 1647600 9/29/2003 4.89 1.59 3.1

USGS 1647600 9/30/2003 4.6 1.46 2.99

USGS 1647600 10/1/2003 4.54 1.44 2.79

USGS 1647600 10/2/2003 4.49 0.76 2.42

USGS 1647600 10/3/2003 3.86 1.05 2.57

USGS 1647600 10/4/2003 4.69 1.64 3.23

USGS 1647600 10/5/2003 4.41 1.02 2.5

USGS 1647600 10/6/2003 4.33 1.14 2.77

USGS 1647600 10/7/2003 4.49 1.04 2.88

USGS 1647600 10/8/2003 4.46 1.26 2.87

USGS 1647600 10/9/2003 4.08 0.81 2.47

USGS 1647600 10/10/2003 4.43 0.9 2.59

USGS 1647600 10/11/2003 4.96 1.2 3.07

USGS 1647600 10/12/2003 5.1 1.81 3.45

USGS 1647600 10/13/2003 4.56 1.6 3.05

USGS 1647600 10/14/2003 5.49 1.27 2.99

USGS 1647600 10/15/2003 4.92 0.88 2.91

USGS 1647600 10/16/2003 3.66 0.71 1.97

USGS 1647600 10/17/2003 3.66 0.79 1.92

USGS 1647600 10/18/2003 3.8 1.2 2.23

USGS 1647600 10/19/2003 4.04 1.88 3.02

USGS 1647600 10/20/2003 4.16 1.55 2.87

USGS 1647600 10/21/2003 4.67 1.26 3.12

USGS 1647600 10/22/2003 3.3 -0.21 1.39

USGS 1647600 10/23/2003 3.4 -0.21 1.87

USGS 1647600 10/24/2003 4.29 0.87 2.62

USGS 1647600 10/25/2003 4.48 0.89 2.72

USGS 1647600 10/26/2003 4.63 0.87 2.78

USGS 1647600 10/27/2003 4.58 0.98 2.91

USGS 1647600 10/28/2003 4.66 1.25 2.84

USGS 1647600 10/29/2003 5.04 1.58 3.04 3.63

USGS 1647600 10/30/2003 4.99 1.54 3.09

USGS 1647600 10/31/2003 4.45 1.16 2.56

USGS 1647600 11/1/2003 4.15 1.27 2.67

USGS 1647600 11/2/2003 4.04 1.18 2.6

USGS 1647600 11/3/2003 4.21 1.34 2.79

USGS 1647600 11/4/2003 4.16 1.33 2.81

USGS 1647600 11/5/2003 4.82 1.29 3.12

Page 5 of 13
Agency Site # Date Max. Gauge 

Height (ft)

Min. 

Gauge 

Height (ft)

Mean 

Gauge 

Height (ft)

Average Max. 

MSL from 15th to 

15th (WML1.41=MSL)

USGS 1647600 11/6/2003 4.92 1.89 3.35

USGS 1647600 11/7/2003 4.3 1.29 2.78

USGS 1647600 11/8/2003 3.58 0.84 2.28

USGS 1647600 11/9/2003 3.76 0.97 2.33

USGS 1647600 11/10/2003 4.05 1.17 2.49

USGS 1647600 11/11/2003 4.12 1.07 2.57

USGS 1647600 11/12/2003 4.24 1.47 2.73

USGS 1647600 11/13/2003 3.73 -0.23 1.62

USGS 1647600 11/14/2003 2.12 -1.25 -0.11

USGS 1647600 11/15/2003 2.58 -0.13 1.12

USGS 1647600 11/16/2003 3.57 0.73 2.12

USGS 1647600 11/17/2003 3.87 1.48 2.63

USGS 1647600 11/18/2003 4.31 1.77 3.08

USGS 1647600 11/19/2003 5.76 2.43 4.09

USGS 1647600 11/20/2003 5.36 1.71 3.16

USGS 1647600 11/21/2003 6.18 1.71 4.46

USGS 1647600 11/22/2003 5.24 2.72 4.15

USGS 1647600 11/23/2003 5.58 2.25 3.88

USGS 1647600 11/24/2003 5.57 2.27 3.85

USGS 1647600 11/25/2003 4.92 1.45 3.13

USGS 1647600 11/26/2003 4.87 1.55 3.21

USGS 1647600 11/27/2003 4.84 1.47 3.03

USGS 1647600 11/28/2003 4.57 1.59 3.15

USGS 1647600 11/29/2003 4.52 0.02 1.62

USGS 1647600 11/30/2003 2.61 0.33 1.43

USGS 1647600 12/1/2003 2.6 0.05 1.2

USGS 1647600 12/2/2003 1.99 -0.3 0.78

USGS 1647600 12/3/2003 2.35 -0.28 1.18

USGS 1647600 12/4/2003 3.82 0.82 2.34

USGS 1647600 12/5/2003 4.34 1.05 2.64

USGS 1647600 12/6/2003 3.24 0.85 2.02

USGS 1647600 12/7/2003 2.28 -0.37 1

USGS 1647600 12/8/2003 3.91 0.44 1.99

USGS 1647600 12/9/2003 4.83 1.39 3.07

USGS 1647600 12/10/2003 4.87 1.6 3.15

USGS 1647600 12/11/2003 6.2 3.56 4.87

USGS 1647600 12/12/2003 6.85 4.66 5.49 5.44

USGS 1647600 12/13/2003 6.79 3.08 4.64

USGS 1647600 12/14/2003 4.94 2.49 3.86

USGS 1647600 12/15/2003 4.57 1.76 3.04

USGS 1647600 12/16/2003 4.02 1.65 2.8

USGS 1647600 12/17/2003 3.52 1.27 2.39

USGS 1647600 12/18/2003 3.48 1.15 2.21

USGS 1647600 12/19/2003 3.75 0.85 2.38

USGS 1647600 12/20/2003 3.21 0.77 2.03

USGS 1647600 12/21/2003 4.11 0.65 2.3

USGS 1647600 12/22/2003 3.97 1.01 2.55

USGS 1647600 12/23/2003 3.62 0.52 1.93

USGS 1647600 12/24/2003 4.43 0.75 2.63 3.53

USGS 1647600 12/25/2003 4.19 1.29 2.63

USGS 1647600 12/26/2003 4.1 1.44 2.75

USGS 1647600 12/27/2003 3.45 0.7 2.01

USGS 1647600 12/28/2003 4.29 0.97 2.52

USGS 1647600 12/29/2003 4.42 1.8 3.05

USGS 1647600 12/30/2003 4.19 1.18 2.55

USGS 1647600 12/31/2003 3.27 0.75 2.03

USGS 1647600 1/1/2004 3.02 0.47 1.9

USGS 1647600 1/2/2004 3.41 0.47 1.93

USGS 1647600 1/3/2004 4.12 1.26 2.61

USGS 1647600 1/4/2004 3.84 1.48 2.61

Page 6 of 13
Agency Site # Date Max. Gauge 

Height (ft)

Min. 

Gauge 

Height (ft)

Mean 

Gauge 

Height (ft)

Average Max. 

MSL from 15th to 

15th (WML1.41=MSL)

USGS 1647600 1/5/2004 4.11 1.12 2.53

USGS 1647600 1/6/2004 3.21 1.02 2.06

USGS 1647600 1/7/2004 2.44 0.25 1.44

USGS 1647600 1/8/2004 3.2 0.27 1.6

USGS 1647600 1/9/2004 3.1 0.19 1.61

USGS 1647600 1/10/2004 3.04 0.42 1.67

USGS 1647600 1/11/2004 4.07 0.61 2.2

USGS 1647600 1/12/2004 3.86 0.73 2.21

USGS 1647600 1/13/2004 2.97 0.18 1.51

USGS 1647600 1/14/2004 3.65 0.33 1.89

USGS 1647600 1/15/2004 3.82 0.26 1.96

USGS 1647600 1/16/2004 1.7 -0.97 0.46

USGS 1647600 1/17/2004 1.9 -1.06 0.43

USGS 1647600 1/18/2004 3.75 0.3 2.15

USGS 1647600 1/19/2004 2.58 -0.27 1.1

USGS 1647600 1/20/2004 2.05 -0.48 0.86

USGS 1647600 1/21/2004 2.53 -0.7 0.88

USGS 1647600 1/22/2004 3.03 0.05 1.58

USGS 1647600 1/23/2004 2.92 -0.11 1.26

USGS 1647600 1/24/2004 3.61 0.4 1.96

USGS 1647600 1/25/2004 2.97 0.07 1.38

USGS 1647600 1/26/2004 3.02 0.56 1.79

USGS 1647600 1/27/2004 3.53 1.17 2.33

USGS 1647600 1/28/2004 3.44 0.63 1.99

USGS 1647600 1/29/2004 2.74 0.64 1.64

USGS 1647600 1/30/2004 2.48 0.01 1.42

USGS 1647600 1/31/2004 1.27 -0.11 0.61

USGS 1647600 2/1/2004 2.37 0.11 1.27

USGS 1647600 2/2/2004 3.02 0.63 1.76

USGS 1647600 2/3/2004 3.84 1.05 2.44

USGS 1647600 2/4/2004 3.23 1.14 2.28

USGS 1647600 2/5/2004 3.05 0.48 1.79

USGS 1647600 2/6/2004 3.83 0.43 2.07

USGS 1647600 2/7/2004 4.38 1.99 3.13

USGS 1647600 2/8/2004 4.5 2.03 3.26

USGS 1647600 2/9/2004 4.45 2.03 3.35 3.04

USGS 1647600 2/10/2004 3.69 0.76 2.12

USGS 1647600 2/11/2004 3.74 0.83 2.28

USGS 1647600 2/12/2004 3.85 1.11 2.41

USGS 1647600 2/13/2004 3.67 1.01 2.31

USGS 1647600 2/14/2004 3.48 0.87 2.16

USGS 1647600 2/15/2004 3 0.46 1.8

USGS 1647600 2/16/2004 3.64 1.1 2.37

USGS 1647600 2/17/2004 4.08 1.02 2.47

USGS 1647600 2/18/2004 3 0.33 1.78

USGS 1647600 2/19/2004 4.54 0.61 2.63

USGS 1647600 2/20/2004 4.69 1.24 2.9

USGS 1647600 2/21/2004 4.36 1.34 2.83

USGS 1647600 2/22/2004 3.87 0.8 2.31

USGS 1647600 2/23/2004 3.99 1.15 2.51

USGS 1647600 2/24/2004 4.43 1.6 2.89

USGS 1647600 2/25/2004 3.54 0.46 1.81

USGS 1647600 2/26/2004 3.51 0.81 2.24

USGS 1647600 2/27/2004 3.77 1.48 2.47

USGS 1647600 2/28/2004 3.45 1.18 2.16

USGS 1647600 2/29/2004 3.24 1.03 2.03

USGS 1647600 3/1/2004 3.31 1.18 2.24

USGS 1647600 3/2/2004 3.7 1.14 2.41

USGS 1647600 3/3/2004 2.96 0.69 1.81

USGS 1647600 3/4/2004 3.65 0.7 2.28

Page 7 of 13
Agency Site # Date Max. Gauge 

Height (ft)

Min. 

Gauge 

Height (ft)

Mean 

Gauge 

Height (ft)

Average Max. 

MSL from 15th to 

15th (WML1.41=MSL)

USGS 1647600 3/5/2004 4.21 1.09 2.6

USGS 1647600 3/6/2004 4.1 1.4 2.82

USGS 1647600 3/7/2004 3.93 1.19 2.5

USGS 1647600 3/8/2004 3.5 0.57 2.07

USGS 1647600 3/9/2004 4.56 0.81 2.72

USGS 1647600 3/10/2004 4.63 1.27 2.86

USGS 1647600 3/11/2004 4.76 1.06 2.73

USGS 1647600 3/12/2004 4.98 1.5 3.17 3.57

USGS 1647600 3/13/2004 3.46 0.2 1.81

USGS 1647600 3/14/2004 2.97 0.21 1.59

USGS 1647600 3/15/2004 3.77 0.75 2.22

USGS 1647600 3/16/2004 3.78 0.56 2.09

USGS 1647600 3/17/2004 4.26 0.94 2.54

USGS 1647600 3/18/2004 4.55 1.57 3.12

USGS 1647600 3/19/2004 4.51 0.54 2.58

USGS 1647600 3/20/2004 4.79 0.73 2.88

USGS 1647600 3/21/2004 4.45 0.75 2.31

USGS 1647600 3/22/2004 2.59 -0.39 0.95

USGS 1647600 3/23/2004 3.49 0.34 2.06

USGS 1647600 3/24/2004 3.87 1.11 2.26

USGS 1647600 3/25/2004 3.35 0.63 1.87

USGS 1647600 3/26/2004 3.38 0.82 1.98

USGS 1647600 3/27/2004 3.19 0.66 1.8

USGS 1647600 3/28/2004 3.34 0.5 1.84

USGS 1647600 3/29/2004 4.55 2.18 3.19

USGS 1647600 3/30/2004 4.12 1.83 3.04

USGS 1647600 3/31/2004 3.88 1.5 2.69

USGS 1647600 4/1/2004 4.43 1.54 2.97

USGS 1647600 4/2/2004 4.11 1.45 2.84

USGS 1647600 4/3/2004 4.38 1.69 3.12

USGS 1647600 4/4/2004 4.96 1.03 2.73 3.55

USGS 1647600 4/5/2004 1.32 -0.98 0.34

USGS 1647600 4/6/2004 2.96 -0.44 1.23

USGS 1647600 4/7/2004 3.89 0.66 2.21

USGS 1647600 4/8/2004 4.13 0.81 2.51

USGS 1647600 4/9/2004 4.26 1 2.57

USGS 1647600 4/10/2004 4.11 1.05 2.41

USGS 1647600 4/11/2004 3.83 0.85 2.27

USGS 1647600 4/12/2004 3.84 0.59 2.38

USGS 1647600 4/13/2004 4.66 1.76 3.32

USGS 1647600 4/14/2004 4.82 2.83 3.88

USGS 1647600 4/15/2004 3.96 2.79 3.34

USGS 1647600 4/16/2004 4.59 2.65 3.65

USGS 1647600 4/17/2004 4.72 2.02 3.38

USGS 1647600 4/18/2004 4.31 1.24 2.68

USGS 1647600 4/19/2004 3.75 0.87 2.35

USGS 1647600 4/20/2004 3.61 0.45 1.99

USGS 1647600 4/21/2004 3.84 0.85 2.32

USGS 1647600 4/22/2004 4.14 1.12 2.5

USGS 1647600 4/23/2004 3.58 0.56 2.01

USGS 1647600 4/24/2004 3.29 0.65 1.91

USGS 1647600 4/25/2004 3.71 1.16 2.51

USGS 1647600 4/26/2004 4.06 1.55 2.71

USGS 1647600 4/27/2004 3.53 0.96 2.37

USGS 1647600 4/28/2004 2.88 1.36 2.08

USGS 1647600 4/29/2004 4.01 1.65 2.92

USGS 1647600 4/30/2004 3.79 1.16 2.64

USGS 1647600 5/1/2004 3.73 1.1 2.48

USGS 1647600 5/2/2004 4.32 1.08 2.94

USGS 1647600 5/3/2004 3.91 1 2.3

Page 8 of 13
Agency Site # Date Max. Gauge 

Height (ft)

Min. 

Gauge 

Height (ft)

Mean 

Gauge 

Height (ft)

Average Max. 

MSL from 15th to 

15th (WML1.41=MSL)

USGS 1647600 5/4/2004 3.46 0.1 1.86

USGS 1647600 5/5/2004 4.34 0.94 2.61

USGS 1647600 5/6/2004 4.19 0.77 2.38

USGS 1647600 5/7/2004 4.42 0.82 2.45

USGS 1647600 5/8/2004 4.18 0.38 2.38

USGS 1647600 5/9/2004 4.64 1.27 2.8 2.73

USGS 1647600 5/10/2004 4.05 0.73 2.34

USGS 1647600 5/11/2004 3.73 0.85 2.26

USGS 1647600 5/12/2004 3.63 0.63 2.15

USGS 1647600 5/13/2004 3.58 0.71 2.2

USGS 1647600 5/14/2004 3.68 0.9 2.33

USGS 1647600 5/15/2004 4.03 0.66 2.41

USGS 1647600 5/16/2004 3.58 0.34 1.9

USGS 1647600 5/17/2004 3.61 0.33 1.99

USGS 1647600 5/18/2004 4.16 0.71 2.45

USGS 1647600 5/19/2004 3.99 0.43 2.04

USGS 1647600 5/20/2004 3.69 0.5 2.22

USGS 1647600 5/21/2004 4.19 1.2 2.62

USGS 1647600 5/22/2004 3.69 0.84 2.34

USGS 1647600 5/23/2004 4.05 1.3 2.59

USGS 1647600 5/24/2004 4.02 1.54 2.67

USGS 1647600 5/25/2004 3.87 1.2 2.44

USGS 1647600 5/26/2004 4.16 1.73 2.88

USGS 1647600 5/27/2004 4.32 1.58 2.91

USGS 1647600 5/28/2004 4.05 0.93 2.71

USGS 1647600 5/29/2004 3.19 0.17 1.65

USGS 1647600 5/30/2004 3.93 1 2.41

USGS 1647600 5/31/2004 4.26 0.59 2.48

USGS 1647600 6/1/2004 4.2 0.53 2.31

USGS 1647600 6/2/2004 4.49 0.69 2.53

USGS 1647600 6/3/2004 4.35 0.17 2.12

USGS 1647600 6/4/2004 3.86 0.18 2

USGS 1647600 6/5/2004 5.11 0.6 2.46 3.7

USGS 1647600 6/6/2004 3.91 0.58 2.16

USGS 1647600 6/7/2004 4.42 0.92 2.62

USGS 1647600 6/8/2004 4.06 0.6 2.25

USGS 1647600 6/9/2004 3.62 0.49 2.01

USGS 1647600 6/10/2004 3.38 0.17 1.75

USGS 1647600 6/11/2004 3.23 0.31 1.94

USGS 1647600 6/12/2004 4.29 1.24 2.74

USGS 1647600 6/13/2004 4.32 1.15 2.64

USGS 1647600 6/14/2004 4.21 1.15 2.7

USGS 1647600 6/15/2004 3.93 0.77 2.29

USGS 1647600 6/16/2004 3.53 0.45 1.96

USGS 1647600 6/17/2004 3.54 0.49 1.99

USGS 1647600 6/18/2004 3.67 0.67 2.15

USGS 1647600 6/19/2004 3.48 0.33 1.8

USGS 1647600 6/20/2004 3.19 0.25 1.67

USGS 1647600 6/21/2004 4.09 0.92 2.39

USGS 1647600 6/22/2004 4.17 0.86 2.39

USGS 1647600 6/23/2004 3.25 0.49 1.87

USGS 1647600 6/24/2004 3.69 0.9 2.2

USGS 1647600 6/25/2004 3.65 1.02 2.31

USGS 1647600 6/26/2004 3.87 0.13 1.94

USGS 1647600 6/27/2004 3.24 0.34 1.77

USGS 1647600 6/28/2004 3.63 0.39 2.01

USGS 1647600 6/29/2004 3.46 -0.05 1.67

USGS 1647600 6/30/2004 3.73 -0.02 2.09

USGS 1647600 7/1/2004 4.1 0.46 2.18

USGS 1647600 7/2/2004 4.07 0.21 2.05

Page 9 of 13
Agency Site # Date Max. Gauge 

Height (ft)

Min. 

Gauge 

Height (ft)

Mean 

Gauge 

Height (ft)

Average Max. 

MSL from 15th to 

15th (WML1.41=MSL)

USGS 1647600 7/3/2004 3.9 0.12 2.01

USGS 1647600 7/4/2004 4.41 0.58 2.63 3

USGS 1647600 7/5/2004 4.34 0.61 2.35

USGS 1647600 7/6/2004 3.53 0.02 1.73

USGS 1647600 7/7/2004 3.85 0.24 2.06

USGS 1647600 7/8/2004 3.93 0.58 2.27

USGS 1647600 7/9/2004 3.66 0.22 1.84

USGS 1647600 7/10/2004 3.29 0.34 1.81

USGS 1647600 7/11/2004 3.4 0.6 1.97

USGS 1647600 7/12/2004 3.69 1.04 2.36

USGS 1647600 7/13/2004 3.93 0.41 2.08

USGS 1647600 7/14/2004 3.81 0.44 2.46

USGS 1647600 7/15/2004 4.29 0.76 2.22

USGS 1647600 7/16/2004 3.62 0.47 1.98

USGS 1647600 7/17/2004 3.69 0.59 2.16

USGS 1647600 7/18/2004 4.15 0.68 2.32

USGS 1647600 7/19/2004 3.73 0.58 2.09

USGS 1647600 7/20/2004 3.81 0.68 2.15

USGS 1647600 7/21/2004 3.45 0.38 1.88

USGS 1647600 7/22/2004 3.7 0.55 2.11

USGS 1647600 7/23/2004 3.8 0.88 2.34

USGS 1647600 7/24/2004 3.79 0.67 2.06

USGS 1647600 7/25/2004 3.25 0.42 1.81

USGS 1647600 7/26/2004 3.87 0.98 2.44

USGS 1647600 7/27/2004 4.75 1.53 2.85 3.34

USGS 1647600 7/28/2004 4.51 0.53 2.43

USGS 1647600 7/29/2004 3.78 0.42 2.13

USGS 1647600 7/30/2004 4.19 0.45 2.42

USGS 1647600 7/31/2004 4.54 0.88 2.64

USGS 1647600 8/1/2004 4.44 0.53 2.48

USGS 1647600 8/2/2004 4.3 0.47 2.3

USGS 1647600 8/3/2004 4.22 0.77 2.5

USGS 1647600 8/4/2004 4.14 0.91 2.51

USGS 1647600 8/5/2004 4 0.7 2.29

USGS 1647600 8/6/2004 3.74 0.4 1.95

USGS 1647600 8/7/2004 3.64 0.91 2.14

USGS 1647600 8/8/2004 4.02 0.68 2.22

USGS 1647600 8/9/2004 3.47 0.17 1.6

USGS 1647600 8/10/2004 3.17 0.92 2.11

USGS 1647600 8/11/2004 3.83 0.92 2.34

USGS 1647600 8/12/2004 3.92 0.92 2.35

USGS 1647600 8/13/2004 4 0.96 2.47

USGS 1647600 8/14/2004 3.22 0.57 1.8

USGS 1647600 8/15/2004 3.47 0.14 1.83

USGS 1647600 8/16/2004 3.98 0.59 2.2

USGS 1647600 8/17/2004 3.91 0.42 2.24

USGS 1647600 8/18/2004 4.03 0.78 2.41

USGS 1647600 8/19/2004 3.86 0.52 2.23

USGS 1647600 8/20/2004 3.59 0.32 1.86

USGS 1647600 8/21/2004 3.55 0.27 1.92

USGS 1647600 8/22/2004 3.45 -0.08 1.43

USGS 1647600 8/23/2004 3.65 0.74 2.22

USGS 1647600 8/24/2004 3.93 0.46 2.07

USGS 1647600 8/25/2004 3.76 0.6 2.22

USGS 1647600 8/26/2004 4.18 0.87 2.45

USGS 1647600 8/27/2004 4.19 0.72 2.44

USGS 1647600 8/28/2004 4 0.48 2.28

USGS 1647600 8/29/2004 3.91 0.44 2.22

USGS 1647600 8/30/2004 4.07 0.63 2.4

USGS 1647600 8/31/2004 3.66 -0.05 1.95

Page 10 of 13
Agency Site # Date Max. Gauge 

Height (ft)

Min. 

Gauge 

Height (ft)

Mean 

Gauge 

Height (ft)

Average Max. 

MSL from 15th to 

15th (WML1.41=MSL)

USGS 1647600 9/1/2004 4 0.17 2.06

USGS 1647600 9/2/2004 3.81 0.55 2.11

USGS 1647600 9/3/2004 4.2 0.81 2.4

USGS 1647600 9/4/2004 4.07 0.78 2.33

USGS 1647600 9/5/2004 3.83 0.92 2.25

USGS 1647600 9/6/2004 4.77 2.06 3.35

USGS 1647600 9/7/2004 4.8 1.62 2.95

USGS 1647600 9/8/2004 4.02 1.43 2.89

USGS 1647600 9/9/2004 4.76 1.73 3.44

USGS 1647600 9/10/2004 3.47 0.89 2.26

USGS 1647600 9/11/2004 3.89 1.36 2.69

USGS 1647600 9/12/2004 4.19 1.44 2.87

USGS 1647600 9/13/2004 4.15 1.07 2.69

USGS 1647600 9/14/2004 4.07 0.72 2.44

USGS 1647600 9/15/2004 4.79 1.33 3.07 3.38

USGS 1647600 9/16/2004 4.22 0.83 2.57

USGS 1647600 9/17/2004 5.07 0.64 2.62

USGS 1647600 9/18/2004 4.46 0.48 2.63

USGS 1647600 9/19/2004 5.39 2.3 3.24

USGS 1647600 9/20/2004 5.33 2.37 3.95

USGS 1647600 9/21/2004 5.12 1.48 3.08

USGS 1647600 9/22/2004 4.33 1.07 2.55

USGS 1647600 9/23/2004 4.13 0.93 2.51

USGS 1647600 9/24/2004 4.34 1.32 2.89

USGS 1647600 9/25/2004 4.7 1.29 3.06

USGS 1647600 9/26/2004 4.41 0.77 2.57

USGS 1647600 9/27/2004 4.38 0.64 2.57

USGS 1647600 9/28/2004 5.16 1.2 3.15

USGS 1647600 9/29/2004 4.89 1.69 3.04

USGS 1647600 9/30/2004 6.56 3.27 5.12 5.15

USGS 1647600 10/1/2004 5.48 2.33 4.05

USGS 1647600 10/2/2004 4.79 1.85 3.37

USGS 1647600 10/3/2004 4.17 1.17 2.51

USGS 1647600 10/4/2004 4.5 1.69 3.05

USGS 1647600 10/5/2004 4.42 1 2.29

USGS 1647600 10/6/2004 3.61 1.48 2.55

USGS 1647600 10/7/2004 3.67 1.01 2.22

USGS 1647600 10/8/2004 3.22 1.09 2.15

USGS 1647600 10/9/2004 3.64 1.13 2.48

USGS 1647600 10/10/2004 3.59 0.28 2.05

USGS 1647600 10/11/2004 3.14 0.05 1.69

USGS 1647600 10/12/2004 4.02 0.87 2.54

USGS 1647600 10/13/2004 4.75 0.99 2.91

USGS 1647600 10/14/2004 4.81 1.33 2.99

USGS 1647600 10/15/2004 5.24 1.04 3.21

USGS 1647600 10/16/2004 4.07 1.12 2.67

USGS 1647600 10/17/2004 3.09 -0.11 1.56

USGS 1647600 10/18/2004 3.97 0.06 1.74

USGS 1647600 10/19/2004 3.95 0.83 2.3

USGS 1647600 10/20/2004 4.56 0.86 2.47

USGS 1647600 10/21/2004 4.73 2.11 3.44

USGS 1647600 10/22/2004 4.87 1.68 3.13

USGS 1647600 10/23/2004 4.59 1.73 3.23

USGS 1647600 10/24/2004 5.19 2.18 3.75 3.78

USGS 1647600 10/25/2004 5.3 2.07 3.68

USGS 1647600 10/26/2004 4.88 1.54 3.27

USGS 1647600 10/27/2004 4.5 1.08 2.84

USGS 1647600 10/28/2004

USGS 1647600 10/29/2004

USGS 1647600 10/30/2004 4.73 1.39 3.06

Page 11 of 13
Agency Site # Date Max. Gauge 

Height (ft)

Min. 

Gauge 

Height (ft)

Mean 

Gauge 

Height (ft)

Average Max. 

MSL from 15th to 

15th (WML1.41=MSL)

USGS 1647600 10/31/2004 4.26 1.3 2.76

USGS 1647600 11/1/2004 3.92 0.98 2.41

USGS 1647600 11/2/2004 4.29 1.11 2.53

USGS 1647600 11/3/2004 4.28 1.22 2.46

USGS 1647600 11/4/2004 4.6 1.33 2.89

USGS 1647600 11/5/2004 4.61 0.59 1.92

USGS 1647600 11/6/2004 3.36 0.85 2.03

USGS 1647600 11/7/2004 3.07 0.41 1.72

USGS 1647600 11/8/2004 2.79 0.2 1.52

USGS 1647600 11/9/2004 3.36 0.34 1.94

USGS 1647600 11/10/2004 4.4 0.86 2.72

USGS 1647600 11/11/2004 4.39 1.1 2.81

USGS 1647600 11/12/2004 4.47 0.92 2.59

USGS 1647600 11/13/2004 3.85 0.5 2.16

USGS 1647600 11/14/2004 4.3 0.64 2.32

USGS 1647600 11/15/2004 4.14 0.76 2.33

USGS 1647600 11/16/2004 4.49 0.91 2.51

USGS 1647600 11/17/2004 4.38 1.17 2.63

USGS 1647600 11/18/2004 4.35 1.37 2.86

USGS 1647600 11/19/2004 4.56 1.18 2.73

USGS 1647600 11/20/2004 4.31 1.2 2.78

USGS 1647600 11/21/2004 4.24 1.07 2.76

USGS 1647600 11/22/2004 4.5 1.16 2.85

USGS 1647600 11/23/2004 4.45 1.3 2.87

USGS 1647600 11/24/2004 4.97 1.24 3.07

USGS 1647600 11/25/2004 4.92 0.97 3.11

USGS 1647600 11/26/2004 3.68 0.11 1.62

USGS 1647600 11/27/2004 4.49 0.99 2.59

USGS 1647600 11/28/2004 4.51 1.84 3.14

USGS 1647600 11/29/2004 4.11 1.07 2.32

USGS 1647600 11/30/2004 4.67 1.65 3.03

USGS 1647600 12/1/2004 4.54 1.28 3

USGS 1647600 12/2/2004 3.75 0.82 2.13

USGS 1647600 12/3/2004 3.5 0.93 2.12

USGS 1647600 12/4/2004 3.86 1.43 2.6

USGS 1647600 12/5/2004 4 1.33 2.62

USGS 1647600 12/6/2004 3.64 1.07 2.31

USGS 1647600 12/7/2004 4.51 1.63 3.04

USGS 1647600 12/8/2004 4.43 1.32 3.1

USGS 1647600 12/9/2004 4.3 1.03 2.62

USGS 1647600 12/10/2004 4.96 1.41 3.05

USGS 1647600 12/11/2004 5.71 2.01 3.95 4.3

USGS 1647600 12/12/2004 5 2.02 3.41

USGS 1647600 12/13/2004 4.31 1.35 2.94

USGS 1647600 12/14/2004 2.9 0.2 1.7

USGS 1647600 12/15/2004 3.26 0.01 1.31

USGS 1647600 12/16/2004 4.36 0.79 2.44

USGS 1647600 12/17/2004 4.36 0.87 2.33

USGS 1647600 12/18/2004 3.33 0.49 2.02

USGS 1647600 12/19/2004 4.28 1.15 2.68

USGS 1647600 12/20/2004 1.95 -1.21 0.06

USGS 1647600 12/21/2004 3.64 0.69 2.32

USGS 1647600 12/22/2004 3.38 0.66 1.99

USGS 1647600 12/23/2004 4.91 0.68 2.78

USGS 1647600 12/24/2004 3.27 0.51 1.92

USGS 1647600 12/25/2004 3.73 0.87 2.25

USGS 1647600 12/26/2004 3.54 0.98 2.23

USGS 1647600 12/27/2004 2.26 -0.5 0.84

USGS 1647600 12/28/2004 4.5 0.62 2.53

USGS 1647600 12/29/2004 3.89 0.88 2.35

Page 12 of 13
Agency Site # Date Max. Gauge 

Height (ft)

Min. 

Gauge 

Height (ft)

Mean 

Gauge 

Height (ft)

Average Max. 

MSL from 15th to 

15th (WML1.41=MSL)

USGS 1647600 12/30/2004 3.32 -0.01 1.43

USGS 1647600 12/31/2004 3.86 0.83 2.39

USGS 1647600 1/1/2005 3.65 0.96 2.2

USGS 1647600 1/2/2005 3.15 0.51 1.76

USGS 1647600 1/3/2005 3.63 0.92 2.25

USGS 1647600 1/4/2005 3.54 0.66 2.08

USGS 1647600 1/5/2005 3.6 0.47 2.03

USGS 1647600 1/6/2005 4.53 1.31 2.83

USGS 1647600 1/7/2005 4.36 1.14 2.78

USGS 1647600 1/8/2005 4.11 1.35 2.7

USGS 1647600 1/9/2005 4.16 0.66 2.32

USGS 1647600 1/10/2005 4.81 1.21 2.96

USGS 1647600 1/11/2005 4.62 1.1 2.83

USGS 1647600 1/12/2005 4.52 0.95 2.71

USGS 1647600 1/13/2005 5.17 1.24 3.11 3.76

Page 13 of 13
ATTACHMENT 8 

References

Project 04121197 / February 4, 2005 Schnabel Engineering North, LLC
REFERENCES 

Environmental Laboratory. 1987. "Corps of Engineers Wetlands Delineation Manual": Technical 

Report Y-87-1, US Army Engineer Waterways Experiment Station. Vicksburg, Mississippi. 

Gleason, Henry A. 1968. The New Britton and Brown Illustrated Flora of the Northeastern U.S. 

and Adjacent Canada. Hafner Publishing Company, Inc. New York. Volumes I, II, III. 

Levine, Carol. 1995. A Guide to Wildflowers in Winter. Yale University Press. New Haven. 329 

pp. 

Munsell Soil Color Charts. 2000 Edition Revised. MacBeth Division of Kollmorgen Corporation. 

Baltimore, Maryland. 

National Climatic Data Center. 2003. July-December Precipitation Data. 

http://www.ncdc.noaa.gov/oa/climate/research/2003/dec/6month.html#prS_mo

Newcomb, L. 1977. Newcomb’s Wildflower Guide. Little, Brown and Company. Boston. 488 pp. 

Reed, P.B., Jr. 1988. National List of Plant Species That Occur in Wetlands: 1988 Northeast 

(Region 1). U.S. Fish and Wildlife Service, U.S. Department of the Interior. 111 pp. 

Strausbaugh, P.D. and E.L. Core. Flora of West Virginia. Second Edition. Seneca Books. 

Grantsville, West Virginia. 1079 pp. 

U.S. Department of Agriculture - Soil Conservation Service. 1976. Soil Survey of the District of 

Columbia. U.S. Government Printing Office. Washington, D.C. 45 and 50 pp. aerial photomap 

sheets. Sheet 8 pro. 

U.S. Geological Survey. 2005. 

http://waterdata.usgs.gov/nwis/nwisman/?site_no=01647600&agency_cd=USGS

U.S. Geological Survey. 1983. Washington West 7.5 Minute Topographic Quadrangle. U.S. 

Government Printing Office. Washington D.C. 

Virginia Institute of Marine Sciences- 2005. 

http://www.vims.edu/bio/sav/index.html

Project 04121197 / February 4, 2005 Schnabel Engineering North, LLC