Location
Latitude / Longitude: 41° 37' 30" N / 80° 18' 22" W
Altitude: 1073 ft above sea level (327 m)
County: Crawford County
Townships: Summit and Sadsbury
Borough: Conneaut Lake
Maps
Bathymetric
USGS 1:24,000 Topographic (7.5 minute quadrangle) -Conneaut Lake and Harmonsburg
Physical Characteristics
Conneaut Lake is of glacial origin and the largest natural lake in Pennsylvania. It is also eutrophic.
The Commonwealth of Pennsylvania owns the lake and private parties own the surrounding land.
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MAJOR INLETS
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MAJOR OUTLETS
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Inlet Run
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Conneaut Outlet
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- Depth
- Max: 18.2 m (60 ft)
Mean: 5.8 m (19 ft)
- Area of Lake: 3.78 km 2
Volume of Lake: 2.4 x 107 m3
Flush rate: 1.3 vol./yr.
Geology: Mississippian Age gray conglomerate and sandstone with some shale. (Ulanoski et al. 1981)
Soils: Silt loams formed on recent alluvium and Wisconsinan till deposits. (Ulanoski et al. 1981)
Area of Conneaut Lake Watershed: 68.4 km 2
Land Use in Conneaut Lake Watershed
View data description
Glossary
Water Quality
Phosphorus (1988, 1994, 1999 - 2001)
Dissolved Oxygen (1999, 2000)
Temperature Profile (1999-2001)
Chlorophyll (2000-2001)
Secchi (1999-2001)
Alkalinity: 73 mg/L
Conductivity: 120 ppm
For more information regarding water quality and nutrients on Conneaut Lake contact Dr. Milton Ostrofsky
Glossary
Biological Diversity
Fishery (Ulanoski et al. 1981)
Game and panfish documented through biological surveys
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Common Name
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Scientific Name |
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smallmouth bass
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Micropterus dolomieui |
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largemouth bass
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Micropterus salmoides
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pumpkinseed sunfish
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Lepomis gibbosus
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rock bass
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Ambloplites rupestris
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black crappie
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Pomoxis nigromaculatus
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bluegill
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Lepomis macrochirus
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northern pike
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Esox lucius
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yellow perch
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Perca flavescens
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walleye
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Stizostedion vitreum vitreum
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brown bullhead
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Ictalurus nebulosus
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yellow bullhead
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Ictalurus natalis
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gar
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Lipisosteus sp.
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Stocked fish: Pennsylvania Fish and Boat Commission stocking overview.
Consumption advisory: Pennsylvania Fish and Boat Commission
Vegetation / Macrophytes (Ulanoski et al. 1981)
Rooted aquatic plants observed:
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Common Name
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Scientific Name |
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Common Name
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Scientific Name |
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Water milfoil
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Myriophyllum spicatum |
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Water stargrass
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Heteranthera dubia
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Naidas
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Najas flexilis
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Fanwort
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Cabomba carolinia
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N. gracillima
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Wild celery
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Vallisneria Americana
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Coontail
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Ceratophyllum demersum
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Spatterdock
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Nuphar advena
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Waterweed
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Elodea Canadensis
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White waterlily
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Brasenia schreberi
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Potomogeton robbinsii
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Lizards tail
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Saururus cermuus
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P. amplifolius
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Bur-reed
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Sparganium eurycarpum
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P. crispus
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Soft bulrush
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Scirpus validus
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P. epihydrus
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Swamp loostrife
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Docodon verticillatus
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Pondweeds
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P. diversifolius
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Soft rush
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Juncus effuses
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P. alpinus
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Forget-me-not
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Myosotis scorpioides
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P. cordata
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Duckweed
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Lemna minor
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P. coccineum
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Star duckweed
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L. trisulca
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P. richardsonii
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Greater duckweed
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Spiroides polyrhiza
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Lake Sediment
Pesticide Sediment analysis (Ulanoski et al. 1981)
Date of Collection October 2, 1980
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PESTICIDE
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μg/kg
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PESTICIDE
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μg/kg
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ALDRIN
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0.0
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HEPTACHLOR
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0.0
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CHLORDANE
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4.0
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LINDANE
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0.0
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DDD
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3.9
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MIREX
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0.0
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DDE
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3.0
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METHOZYCHLOR
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0.0
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DDT
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0.0
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PCB
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0.0
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DIELDRIN
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0.0
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PCN
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0.0
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ENDOSULFN I
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0.0
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PERTHANE
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0.0
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ENDRIN
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0.0
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TOXAPHENE
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0.0
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HEPTACHLOR EPOXIDE
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0.0
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Recreation
Fishing / Boating access areas:
Conneaut Lake
- Located in Summit
Owned by Pennsylvania Fish and Boat Commission
Horsepower restriction: unlimited
Fee: no
Shore Fishing available
Roadway parking only
Fireman's Beach
- Located in Sadsbury
Owned by the Local Government.
- Horsepower restriction: unlimited
Fee: yes
- Shore fishing available
Large Parking lots
Access Area information: http://sites.state.pa.us/PA_Exec/Fish_Boat/acctbl.htm
Special Boating Regulations: http://sites.state.pa.us/PA_Exec/Fish_Boat/spbtregs.htm
Consumption advisory
Limit yourself to 2 meals / month of largemouth bass due to the mercury content
Source: Pennsylvania Fish and Boat Commission
Links
Pennsylvania Fish and Boat Commission (PFBC)
PFBC Fishing and Boating Map
French Creek Watershed Conservation Plan (Jan 2002)
Research
Ostrofsky, Milton L. Allegheny College. Owen, Jeffrey S. Crawford Conservation District. (Nov. 1989).Conneaut Lake Water Quality and Land Use Study. Crawford Conservation District, State Conservation Commission, Crawford County Commissioners and the Pennsylvania Department of Environmental Resources. (pdf: 4,294K)
References
Ulanoski, James T. and Shertzer, Richard H. Pennsylvania Department of Environmental Resources. Marker, James L. United States Geological survey. Hartman, Richard T., PhD University of Pittsburgh. (Dec. 1981). Trophic classification and characteristics of twenty-six publicly owned Pennsylvania lakes. Bureau of Water Quality Management. Pennsylvania Department of Environmental Resources. (p 67-76 / 240)
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