Dewart Lake
Kosciusko County, IndianaView mapDirections
Not Rated: one monitoring station are on record, but they measured water clarity only. LakeQuality’s A–F method grades total phosphorus, total nitrogen, chlorophyll-a, and turbidity; clarity is shown, not scored.
- 41 ft max depth
- Public access
- Limited data
Dewart Lake in Kosciusko County, Indiana is not rated for water quality — its monitoring record does not meet the evidence bar. Water clarity: 10.2 ft visibility.
- Clarity
- 10.2 ft
- Max depth
- ~41 ft est.
- Public access
- Yes
Stays via Stay22
Stays near Dewart Lake
Compare lakeside cabins, hotels, and vacation rentals near Dewart Lake in Kosciusko County, Indiana — 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 Dewart Lake
Prices for Sep 11–13, 4 adults. Change dates on the map below.
Availability and prices from Stay22 partners (Booking.com, Vrbo, Expedia). We may earn a commission from bookings, at no extra cost to you.
Planning a trip? Cabins and lodging at Dewart Lake → · more Indiana lake trips
Watch Dewart Lake’s letter
Email me if this lake’s grade moves. Grades stay free.
Or email
Why Dewart Lake has no grade
Dewart Lake has monitoring on record from one station, but only water clarity was measured. LakeQuality’s A–F letter uses total phosphorus, total nitrogen, chlorophyll-a, and turbidity against EPA National Lakes Assessment condition classes. With none of those grading measurements on record, Dewart Lake is Not Rated — not an F. Its 10.2-foot median from 11 readings collected 2021 is still shown as clarity, but clarity alone cannot earn a letter.
Not Rated is EPA Integrated Reporting Category 3 — insufficient information. Everything below that has been measured is still reported on this page.
Sampling is run by IDEM and volunteer programs, and published through the EPA Water Quality Portal. Read the full grading methodology.
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. Grade methodology: LakeQuality methodology.
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 Safety
Not ratedLimited data
The letter is not a swimming clearance. Check local advisories before you swim.
Water quality measurements for Dewart Lake
These readings exist but are not enough for an A–F grade — see why.
Good clarity, visible to about 10.2 ft. TSI 44.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 10.2 ft | Not graded |
| Phosphorus | No recent samples | |
| Chlorophyll-a (Algae) | No recent samples | |
| Trophic State Index (TSI) | 44 | Mesotrophic |
Moderate nutrients, good water quality
Lake Details
| Characteristic | Value |
|---|---|
| Maximum Depth | ~41 ft est. |
| Average Depth | ~16 ft est. |
| Public Access | Yes |
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
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
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. LakeQuality has not rated this lake (UNRATED) — the only measurement available is water clarity, which is not a water-quality indicator on its own — EPA's National Lakes Assessment does not grade clarity.
What is the water quality grade for Dewart Lake?
- Dewart Lake in Kosciusko County, Indiana is not rated for water quality — its monitoring record does not meet the evidence bar. Water clarity: 10.2 ft visibility.
Is Dewart Lake safe to swim in?
- The letter is 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.
Explore Dewart Lake across LakeQuality
Species activity outlook by water temperature and season
Top lakes and where to stay in the Northern Indiana Lake Country area
Where to stay at Indiana's top lakes, each with its grade
Indiana's cleanest and most-polluted lakes, ranked
More Indiana Lake Rankings
Other Lakes in Indiana
Mesotrophic Lakes in Indiana
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)
Grade thresholds from the EPA National Lakes Assessment (EPA 841-R-24-006, Table 6-3), applied by ecoregion. See how grades are calculated 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