Woodhaven Lake
Lee County, IllinoisView mapDirections
Illinois EPA publishes the water-quality measurements for Woodhaven Lake. Here is what has been measured.
- 30 ft max depth
- Limited data
Woodhaven Lake in Lee County, Illinois has water-quality measurements published by Illinois EPA, shown here as reported. Water clarity: 6.7 ft visibility.
Woodhaven Lake is a lake in Lee County, Illinois with an estimated average depth of about 30 feet.
Source: EPA Water Quality Portal sampling records, Illinois EPA, last sampled 2021-07-12. Methodology: how these readings are compared.
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Swimming conditions
No readingLimited data
Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Whether Woodhaven Lake is safe to swim in today is a call for the Illinois Environmental Protection Agency and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.
Water quality measurements for Woodhaven Lake
These are the measurements Illinois EPA publishes for Woodhaven Lake, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.
Moderate clarity, visible to about 6.7 ft. TSI 50.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 6.7ft | Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer. |
| Total phosphorus | No reading The nutrient that most limits algae growth in freshwater. More phosphorus, more algae potential. | |
| Chlorophyll-a (algae) | No reading The green pigment in algae — a direct measure of how much algae is in the water. | |
| Trophic state (TSI)Carlson's 0–100 index of how much algae a lake can support, from clarity, phosphorus and chlorophyll-a. | 50 | Mesotrophic OligotrophicMesotrophicEutrophicHypereutrophic |
Moderate nutrients, good water quality
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Lake Details
Max depth
~30 ft est.
Depth marked “est.” is a modeled maximum from GLOBathy (Khazaei et al. 2022, CC0), not a measured survey. Illinois has not published bathymetry for Woodhaven Lake.
Lake Size & Watershed
Watershed (drainage) area
1 sq mi
HydroLAKES / HydroSHEDS
Surface area
30 acres
HydroLAKES / HydroSHEDS
Shoreline
1.1 mi
HydroLAKES / HydroSHEDS
Elevation
883 ft
Size, shoreline, and watershed area from HydroLAKES (HydroSHEDS). Mean depth here is modelled, not surveyed — HydroLAKES v1.0 estimates lake depth from surrounding terrain rather than from soundings. Treat it as an approximation, and prefer a state bathymetric survey where one exists.
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Stays near Woodhaven Lake
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Fishing Woodhaven Lake
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
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.
Nearby Lakes in Lee County
Frequently asked questions about Woodhaven Lake
Where is Woodhaven Lake?
- Woodhaven Lake is a lake in Lee County, Illinois. Its water-quality measurements are published by Illinois EPA and shown on this page as reported.
What is the water quality of Woodhaven Lake?
- Woodhaven Lake in Lee County, Illinois has water-quality measurements published by Illinois EPA, shown here as reported. Water clarity: 6.7 ft visibility.
Is Woodhaven Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
How deep is Woodhaven Lake?
- No published bathymetric survey covers Woodhaven Lake, so its depth has not been measured. The HydroLAKES global model estimates an average depth of about 30 feet, but that is a modelled estimate derived from surrounding terrain rather than a measurement on the water, so treat it as approximate.
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Where this data comes from
1 measurement from 1 monitoring station, 2021. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- North American Lake Management Society
NALMS1 sample · 2021
Monitoring station identifiers (1)
EPA condition classes from the National Lakes Assessment (EPA 841-R-24-006, Table 6-3), applied by ecoregion. See where the data comes from and data sources.
Other records on this page
Regulated discharger data from EPA ECHO (ICIS-NPDES)
Lake size & watershed from HydroLAKES (HydroSHEDS)