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Lake And Watershed Facts
General Information:
Lake Name: Clear Lake
State: Iowa
County: Cerro Gordo
Nearest Municipalities: Clear Lake, Ventura
Latitude: 43° 08' 01" N (gauging station)
Longitude: 93° 22' 57" W (gauging station)
EPA Region: 7
USGS Major Basin Name: Upper Mississippi
USGS Minor Basin Name: Iowa-Skunk-Wapsipinicon
USGS Hydrologic Unit Code: 07080203
Major Tributaries: Ventura Marsh
Receiving Water Body: Clear Creek
Lake Information:
Lake surface area: 1,468 hectares (3625 Ac)
Maximum depth: 5.9 meters (19.2 ft)
Mean depth: 2.9 meters (9.6 ft)
Volume: 42,054,656 m3 (34,080 Ac-ft)
Length of shoreline: 22.7 kilometers (14.1 mi)
Shoreline development index: 1.60
Hydraulic residence time: 1.6 years
Watershed Information:
Watershed area: 3,420 hectares (8,454 Ac)
Watershed area/Lake area ratio: 2.3
Watershed Land Use:
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Land Use
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Total Hectares
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Total Acres
|
Percent of Watershed Area
|
|
Row Crop
|
1969.9
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4867.6
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59%
|
|
Urban
|
335.4
|
828.9
|
10%
|
|
Marsh
|
294.1
|
726.6
|
9%
|
|
Grass
|
251.5
|
621.4
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8%
|
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Trees
|
182.5
|
451.0
|
5%
|
|
Road
|
152.1
|
375.8
|
5%
|
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Farmstead
|
56.5
|
139.5
|
2%
|
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Pasture
|
37.9
|
93.6
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1%
|
|
State Park
|
26.8
|
66.1
|
1%
|
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CRP
|
25.9
|
63.9
|
1%
|
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Hay
|
9.2
|
22.7
|
<1%
|
|
Terraces
|
2.6
|
6.4
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<1%
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Source: Clear Lake Diagnostic and Feasibility Study
CLEAR Project ~ PO Box 863 ~ Clear Lake, IA 50428 ~ 641-923-2837 Ext.3
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