Beaver Dam Lake
Kosciusko County, IndianaView mapDirections
IDEM publishes the water-quality measurements for Beaver Dam Lake. Here is what has been measured.
- Impaired · Nutrients (phosphorus, nitrogen)
- 36 ft max depth
- Public access
- Limited data
Beaver Dam Lake in Kosciusko County, Indiana has water-quality measurements published by IDEM, shown here as reported. Water clarity: 3.1 ft visibility. Phosphorus: 188 µg/L. Chlorophyll-a (algae): 9.5 µg/L.
Beaver Dam Lake is a lake in Kosciusko County, Indiana with an estimated average depth of about 36 feet. Overall water quality is declining over recent sampling years. Limited fish-species data available. Public access is available with 1 public boat landing.
Source: EPA Water Quality Portal sampling records, IDEM, last sampled 2021-08-09. Methodology: how these readings are compared.
What Beaver Dam Lake is good for
From access and monitoring records, not editorial picks.
- Boat launch1 documented ramp
Swimming conditions
No readingRecreation use not supported
Nutrient and algae readings are not a swimming clearance. Beaver Dam Lake is listed impaired under Clean Water Act §303(d) (IR 5) for nutrients (phosphorus, nitrogen). Check local advisories before you swim.
Whether Beaver Dam Lake is safe to swim in today is a call for the Indiana Department of Environmental Management and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.
Water quality measurements for Beaver Dam Lake
These are the measurements IDEM publishes for Beaver Dam Lake, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.
Very murky, less than 3.1 ft of visibility. Phosphorus 188 µg/L. Chlorophyll-a 9.5 µg/L. TSI 61.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 3.1ft | Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer. |
| Total phosphorus | 188µg/L | Measured, not scored The nutrient that most limits algae growth in freshwater. More phosphorus, more algae potential. |
| Chlorophyll-a (algae) | 9.5µg/L | Measured, not scored 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. | 61 | Eutrophic OligotrophicMesotrophicEutrophicHypereutrophic |
High nutrients, frequent algae, reduced clarity
Ask about Beaver Dam Lake
Answers come straight from the public measurements and survey records on this page.
Lake Details
Max depth
~36 ft est.
Public access
Yes
Listed by IDEM
Depth marked “est.” is a modeled maximum from GLOBathy (Khazaei et al. 2022, CC0), not a measured survey. Indiana has not published bathymetry for Beaver Dam Lake.
Lake Size & Watershed
Watershed (drainage) area
1 sq mi
HydroLAKES / HydroSHEDS
Surface area
141 acres
HydroLAKES / HydroSHEDS
Shoreline
2 mi
HydroLAKES / HydroSHEDS
Elevation
860 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.
Recreation & Access
- Tri-County Fish & Wildlife AreaPublic
Named access points in the USGS National Boat Ramps inventory, within about 3 miles. More lakes with boat ramps
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Fishing Beaver Dam Lake
Water quality readings over time
3 seasons of samples on record (2021–2024). Calling a direction takes at least 4 years of the same measurement.
Water clarity
Improving3 years
Phosphorus
Worsening+29.03 µg/L/yr3 years
Chlorophyll-a
Worsening+7 µg/L/yr2 years
EPA Impairment Status
Beaver Dam Lake is officially listed as impaired under Clean Water Act §303(d) in the 2024 EPA reporting cycle (IR category 5).
Causes of impairment
Designated uses not supporting: Recreation.
Source: EPA ATTAINS assessment unit INB06P1078_00 · Official waterbody report
Regulated Pollution Sources Nearby
4 EPA-permitted facilities operate within about 5 miles of Beaver Dam Lake under Clean Water Act (NPDES) discharge permits. 1 facility has a reported Clean Water Act violation in the past three years.
- Tippecanoe Valley High SchoolMentone · 3.6 mi away · NPDES IN0037044Recent violation
- Cb Farms Livestock BuildingsClaypool · 3.4 mi away · NPDES INRA02841
- Tippecanoe Valley High SchoolAkron · 3.5 mi away · NPDES INRA04393
- Pike Lumber Company IncCarbon · 3.6 mi away · NPDES INRM00310
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 Kosciusko County
Frequently asked questions about Beaver Dam Lake
Where is Beaver Dam Lake?
- Beaver Dam Lake is a lake in Kosciusko County, Indiana. Its water-quality measurements are published by IDEM and shown on this page as reported.
What is the water quality of Beaver Dam Lake?
- Beaver Dam Lake in Kosciusko County, Indiana has water-quality measurements published by IDEM, shown here as reported. Water clarity: 3.1 ft visibility. Phosphorus: 188 µg/L. Chlorophyll-a (algae): 9.5 µg/L.
Is Beaver Dam Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Beaver Dam Lake is listed impaired under Clean Water Act §303(d) (IR 5) for nutrients (phosphorus, nitrogen). Check local advisories before you swim.
How deep is Beaver Dam Lake?
- No published bathymetric survey covers Beaver Dam Lake, so its depth has not been measured. The HydroLAKES global model estimates an average depth of about 36 feet, but that is a modelled estimate derived from surrounding terrain rather than a measurement on the water, so treat it as approximate.
Are there boat ramps on Beaver Dam Lake?
- Beaver Dam Lake has 1 documented boat landing in the USGS National Boat Ramps inventory. Named access points include Tri-County Fish & Wildlife Area. Public access is listed as yes.
Can I fish at Beaver Dam Lake?
- Beaver Dam Lake has 1 documented boat landing in the USGS National Boat Ramps inventory. Seasons, size and bag limits, and whether you need a license are set by Indiana's fish and wildlife agency, so check its current regulations before you go.
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Where this data comes from
11 measurements 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
NALMS11 samples · 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
Impairment status from EPA ATTAINS 303(d) database
Regulated discharger data from EPA ECHO (ICIS-NPDES)
Lake size & watershed from HydroLAKES (HydroSHEDS)
Named boat-access points from the USGS National Boat Ramps inventory