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Lake Geneva
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Welcome
Wilderness
Yellow
Lake Geneva has Eurasian milfoil. If you visit the lake with a boat, please remove milfoil fragments from your trailer before leaving the ramp area!
Watershed Area
198 acres
Lake surface area
29 acres
Maximum depth
46 feet
Mean depth
19 feet
Public Park
Yes
Boat Ramp
Yes, no gas engines
Fish Present
bass, stocked rainbow
Volunteer monitoring began at Lake Geneva in the 1980s and continued from 1994 through 2008, after which it was discontinued. The data indicated that the lake was lightly colored and low to moderate in primary productivity (threshold mesotrophic) with good water quality. Productivity may have declined slightly over time, but the correlation is weak.
Profile data indicate thermal stratification is stable through summer, and sediments release phosphorus to the deep water. Nitrogen to phosphorus ratios are above 20:1, which generally favors other algae over bluegreens, although one species is commonly found in the lake. No toxic blooms have been identified in the lake.
Lake Geneva has a public access boat ramp, and residents have funded efforts to control water lilies in the past. Eurasian milfoil has recently been identified in the lake, and control activities are underway.
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This bathymetric map shows contour lines of equal depth, similar to a topographic map would for mountains and valleys
This map shows the area of the watershed relative to the area of the lake. Generally speaking, the larger a watershed is relative to a lake, the greater the influence land use practices on lake water quality
Click image to enlarge
Back to top View or Download Data Use this tool to view or download data from the lake in tabular format. You can
define date ranges and select which parameters to view or download. Chart Data Use the charting tool to look at graphs showing single parameters for a single
water year at a time. Five year water quality trends
A common method of tracking water quality trends in lakes is by calculating
the “trophic state index” (TSI) (Carlson, 1977). TSI indicators predict the biological
productivity of the lake based on water clarity (Secchi) and concentrations of total
phosphorus (TP) and chlorophyll a (Chlor).
The average of these three TSI indicators during the growing season can be used
to place lakes in one of three broad categories:
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