Baumann Park Lake
Winnebago County, IllinoisView mapDirections
Illinois EPA publishes the water-quality measurements for Baumann Park Lake. Here is what has been measured.
- Mesotrophic
- 16 ft max depth
- Limited data
Baumann Park Lake in Winnebago County, Illinois has water-quality measurements published by Illinois EPA, shown here as reported. Water clarity: 10.2 ft visibility. Phosphorus: 13.5 µg/L. Chlorophyll-a (algae): 6.1 µg/L.
Baumann Park Lake is a mesotrophic lake in Winnebago County, Illinois with an estimated average depth of about 16 feet.
Source: EPA Water Quality Portal sampling records, Illinois EPA, last sampled 2021-10-18. Methodology: how these readings are compared.
For a place on the water, look through cabin and lake-house rentals near Baumann Park Lake on Vrbo. For a hotel or motel room, Booking.com and Expedia both search around the lake.
What Baumann Park Lake is good for
From access and monitoring records, not editorial picks.
- Clear water10.2 ft of visibility
Swimming conditions
Readings onlyLimited data
Based on clarity and algae readings from past sampling — there is no live water temperature and a current cyanobacteria reading for this lake. Check your state or county health department before you swim.
Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Whether Baumann Park 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 Baumann Park Lake
These are the measurements Illinois EPA publishes for Baumann Park Lake, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.
Good clarity, visible to about 10.2 ft. Phosphorus 13.5 µg/L. Chlorophyll-a 6.1 µg/L. TSI 45.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 10.2ft | Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer. |
| Total phosphorus | 13.5µg/L | Good GoodFairPoor |
| Chlorophyll-a (algae) | 6.1µg/L | Good GoodFairPoor |
| Trophic state (TSI)Carlson's 0–100 index of how much algae a lake can support, from clarity, phosphorus and chlorophyll-a. | 45 | Mesotrophic OligotrophicMesotrophicEutrophicHypereutrophic |
Moderate nutrients, good water quality
Ask about Baumann Park Lake
Answers come straight from the public measurements and survey records on this page.
Water Temperature
Baumann Park Lake typically sits around 64°F at the surface in October. Summer average is about 77°F. Usually warmest in Aug (about 80°F) and coldest in May (about 58°F). These are typical values by month — not a live reading.
Column height runs from this lake’s coldest month (58°F) to its warmest (80°F).
Typical surface water temperature by month, from 264 field readings (2011–2021) via the EPA Water Quality Portal. See the full Baumann Park Lake water temperature breakdown →
Lake Details
Max depth
~16 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 Baumann Park Lake.
Lake Size & Watershed
Watershed (drainage) area
677 sq mi
HydroLAKES / HydroSHEDS
Surface area
62 acres
HydroLAKES / HydroSHEDS
Shoreline
1.4 mi
HydroLAKES / HydroSHEDS
Elevation
719 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.
Stays via Stay22
Stays near Baumann Park Lake
Compare lakeside cabins, hotels, and vacation rentals near Baumann Park Lake in Winnebago County, Illinois — live availability and prices for your trip. Switch the map to Satellite to see the lake and how close each stay is to the water.
Top-rated places to stay near Baumann Park Lake
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Fishing Baumann Park Lake
Regulated Pollution Sources Nearby
4 EPA-permitted facilities operate within about 5 miles of Baumann Park Lake under Clean Water Act (NPDES) discharge permits. 1 facility has a reported Clean Water Act violation in the past three years.
- Sandy Hollow Ccdd SiteRockford · 4.4 mi away · NPDES IL0079171Recent violation
- Bvr Technologies CompanyRockford · 2.4 mi away · NPDES IL0074349
- Thermoplastic IncRockford · 3.4 mi away · NPDES IL0076724
- Irene QuarryBelvidere · 4.3 mi away · NPDES IL0067741
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 Winnebago County
Frequently asked questions about Baumann Park Lake
Where is Baumann Park Lake?
- Baumann Park Lake is a lake in Winnebago County, Illinois. Its water-quality measurements are published by Illinois EPA and shown on this page as reported.
What is the water quality of Baumann Park Lake?
- Baumann Park Lake in Winnebago County, Illinois has water-quality measurements published by Illinois EPA, shown here as reported. Water clarity: 10.2 ft visibility. Phosphorus: 13.5 µg/L. Chlorophyll-a (algae): 6.1 µg/L.
Is Baumann Park Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
What is the water temperature of Baumann Park Lake?
- Baumann Park Lake typically sits around 64°F at the surface in October, from 264 EPA Water Quality Portal field readings (2011–2021). That is a typical value for the month, not a live reading.
How deep is Baumann Park Lake?
- No published bathymetric survey covers Baumann Park Lake, so its depth has not been measured. The HydroLAKES global model estimates an average depth of about 16 feet, but that is a modelled estimate derived from surrounding terrain rather than a measurement on the water, so treat it as approximate.
Explore Baumann Park Lake across LakeQuality
8.1 mi away · cable-pulled, no boat wake
Species activity outlook by water temperature and season
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Where this data comes from
36 measurements from 2 monitoring stations, 2021. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- illinois epa
IL_EPA_WQX36 samples · 2021
Analytical methods
- MEASURED IN FIELD
- Phosphorus by Colorimetry
- 10200 H 2 ~ Chlorophyll a-b-c Determination by spectrophotometer
Monitoring station identifiers (2)
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)