Woodhaven Lake is a mesotrophic lake in Lee County, Illinois. Water quality is graded C based on 1 sampling years through 2021. Limited fish-species data available. Public access is available. Compared to the 1 other monitored lakes in Lee County, Woodhaven Lake ranks #2 for water quality.
Source: EPA Water Quality Portal sampling records, Illinois DNR, last sampled 2021-07-12. Grade methodology: LakeGrade methodology.
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Swimming Safety
Generally safe for swimming, moderate water quality
Water Quality Grade: C, Fair
Moderate clarity, visible to about 6.7 ft. Trophic State Index: 50.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 6.7 ft | C |
| Phosphorus | No data | |
| Chlorophyll-a (Algae) | No data | |
| Trophic State Index (TSI) | 50 | Mesotrophic |
Moderate nutrients, good water quality
Where to stay near Woodhaven Lake
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Fishing Woodhaven Lake
Location
County Ranking
Ranked #2 of 2 lakes in Lee County
Nearby Lakes in Lee County
Explore Woodhaven Lake across LakeGrade
More Illinois Lake Rankings
Other Grade C Lakes in Illinois
Mesotrophic Lakes in Illinois
More records, surveys & data sources
Reservoir Info (USACE NID)
Woodhaven Lake is a man-made reservoir impounded by the Woodhaven Lake Dam (completed 1975), built primarily for recreation on the TRIB GREEN RIVER; earth-type dam, 33 ft tall and 262 ft long.
- Normal storage
- 282 ac-ft
- Max storage
- 456 ac-ft
- Hazard class
- Low
- Owner
- WOODHAVEN ASSOCIATION
Source: USACE National Inventory of Dams, NID ID IL01148 · Operator website
Lake Size & Watershed
Size, shoreline, and watershed area from HydroLAKES (HydroSHEDS). Mean depth is a modeled estimate.
Regulated Pollution Sources Nearby
2 EPA-permitted facilities operate within about 5 miles of Woodhaven Lake under Clean Water Act (NPDES) discharge permits. 1 facility has a reported Clean Water Act violation in the past three years.
- Amboy Stp, City OfAmboy · 3.5 mi away · NPDES IL0027472Recent violation
- Woodhaven Lakes Campground StpSublette · 0.7 mi away · NPDES IL0045543
Facilities permitted to discharge under the Clean Water Act within ~5 miles; proximity does not by itself mean a facility affects this lake. Source: EPA ECHO (ICIS-NPDES), as of 2026-07.
Data Sources
Water quality data from the EPA Water Quality Portal
Regulated discharger data from EPA ECHO (ICIS-NPDES)
Lake size & watershed from HydroLAKES (HydroSHEDS)
Grading methodology based on Metropolitan Council standards
Most recent sample: 2021-07-12
Monitoring stations: 1