Conesus Lake Information

Physical Features of Conesus Lake and its Watershed

Feature English Units Metric Units
Elevation 818 ft. 249 m.
Length 7.8 mi. 12.6 km.
Average Width 0.66 mi. 1.06 km.
Average Depth 37.7 ft. 11.5 m.
Maximum Depth 66.3 ft. 20.2 m.
Volume 5532 x 106 cu. ft. 156.8 x 106 m3
Water Surface Area 5.2 sq. mi. 13.4 sq. km.
Land Drainage 70 sq. mi. 180.5 sq. km.
Shoreline Length 18.4 mi. 29.6 km.
Hydrologic Retention Time 1.4 - 3.2 yrs.
Total Basin Population (1990) 9,800

 

Summary of Water Yield Calculations

 Allocated Use
Permitted Withdrawal
million gallons per day
(mgd)
 Actual 1999 Withdrawal
million gallons per day
(mgd)
Water supply: Village of Avon 
 3.5
0.80 
Water supply: Village of Geneseo
 3.0
0.80
Lakeville Water District
 0.040
0 
Downstream release requirement for wastewater dilution
 6.5
As required 
Summed Allocation
 13
 
Safe yield at 3 ft drawdown
 7.8
 
Deficit/overallocation
 5.2
 

 

August Hypolimnetic Temperature

Year Temperature at 18 m  (oC)  Source
1910 12.5 Birge and Juday (1914)
1972 11.5 Chamberlain (1975)
1973 11.0 Chamberlain (1975)
1980 10.1 Stewart (unpublished)
1985 10.7 Stewart (unpublished)
1990 11.1 Stewart (unpublished)
1995 11.4 Stewart (unpublished)
1996 10.3 Bosch (unpublished)
2000 10.0 Makarewicz (unplublished)