Dewart Lake
Kosciusko County, IndianaView mapDirections
IDEM publishes the water-quality measurements for Dewart Lake. Here is what has been measured.
- 41 ft max depth
- Public access
- Limited data
Dewart Lake in Kosciusko County, Indiana has water-quality measurements published by IDEM, shown here as reported. Water clarity: 10.2 ft visibility.
Dewart Lake is a lake in Kosciusko County, Indiana with an estimated average depth of about 41 feet. Limited fish-species data available. Public access is available with 1 public boat landing.
Source: EPA Water Quality Portal sampling records, IDEM, last sampled 2021-08-11. Methodology: how these readings are compared.
What Dewart Lake is good for
From access and monitoring records, not editorial picks.
- Clear water10.2 ft of visibility
- Boat launch1 documented ramp
Swimming conditions
No readingLimited data
Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Whether Dewart 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 Dewart Lake
These are the measurements IDEM publishes for Dewart 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. TSI 44.
| 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 | 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. | 44 | Mesotrophic OligotrophicMesotrophicEutrophicHypereutrophic |
Moderate nutrients, good water quality
Ask about Dewart Lake
Answers come straight from the public measurements and survey records on this page.
Lake Details
Max depth
~41 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 Dewart Lake.
Lake Size & Watershed
Watershed (drainage) area
8 sq mi
HydroLAKES / HydroSHEDS
Surface area
502 acres
HydroLAKES / HydroSHEDS
Shoreline
5.7 mi
HydroLAKES / HydroSHEDS
Elevation
863 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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Stays near Dewart Lake
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Fishing Dewart Lake
Regulated Pollution Sources Nearby
6 EPA-permitted facilities operate within about 5 miles of Dewart Lake under Clean Water Act (NPDES) discharge permits.
- Maple Leaf Farms IncMilford · 1.7 mi away · NPDES IN0000876
- Bison Trailer LlcMilford · 4.3 mi away · NPDES INRM01779
- North Park Phase 5Milford · 4.5 mi away · NPDES INR10L977
- Additional Compacted Aggregate Service Areas At Bison CoachMilford · 4.7 mi away · NPDES INR10H683
- Bison Horse Trailers LlcMilford · 4.7 mi away · NPDES INRM01733
- Pigtek A Division Of Ctb IncorporatedMilford · 4.7 mi away · NPDES INRM00729
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 Dewart Lake
Where is Dewart Lake?
- Dewart 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 Dewart Lake?
- Dewart Lake in Kosciusko County, Indiana has water-quality measurements published by IDEM, shown here as reported. Water clarity: 10.2 ft visibility.
Is Dewart Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
How deep is Dewart Lake?
- No published bathymetric survey covers Dewart Lake, so its depth has not been measured. The HydroLAKES global model estimates an average depth of about 41 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 Dewart Lake?
- Dewart 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 Dewart Lake?
- Dewart 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.
Explore Dewart Lake across LakeQuality
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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
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