Pike Lake is a productive, nutrient-rich eutrophic lake in Kosciusko County, Indiana. Water quality is graded F based on 1 sampling years through 2021. Overall water quality is improving over recent sampling years. The lake supports 6 documented fish species including Bluegill, Catfish, and Crappie. Public access is available. Compared to the 18 other monitored lakes in Kosciusko County, Pike Lake ranks #16 for water quality.
Source: EPA Water Quality Portal sampling records, Indiana DNR, last sampled 2021-08-09. Grade methodology: LakeGrade methodology.
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Swimming Safety
Based on E. coli testing, Pike Lake frequently exceeded the EPA safe-swimming threshold (235 MPN/100mL) — on 20% of 25 samples across 3 seasons.
This is a historical summary of past testing, not a current condition — bacteria levels change quickly, especially after rain. Always check Indiana’s current beach and health-department advisories before swimming.
Water Quality Grade: F, Very Poor
Very murky, less than 1.9 ft of visibility. Trophic State Index: 68.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 1.9 ft | F |
| Phosphorus | No data | |
| Chlorophyll-a (Algae) | No data | |
| Trophic State Index (TSI) | 68 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Where to stay near Pike Lake
Compare lakeside cabins, hotels, and vacation rentals near Pike 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.
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Fish Species
Click a species to see every graded lake where it is documented.
Fishing Pike Lake
Water Quality Trend: ↑ Improving
Based on 5 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | ↑ Improving | +0.066 m/yr | 5 |
| Chlorophyll-a | → Stable | -0.05 µg/L/yr | 5 |
Current Conditions
Latest reading Jul 6, 2026, 4:00 AM from USGS gauge 03331040. See live data ↗ — readings update every 15–60 minutes; this page refreshes on each build.
Water Temperature
Pike Lake averages about 79°F at the surface in summer, usually warmest in Jul (about 81°F) and coldest in Apr (about 52°F). These are typical values by month — not a live reading.
Typical surface water temperature by month, from 32 field readings (2013–2022) via the EPA Water Quality Portal. See the full Pike Lake water temperature breakdown →
Location
County Ranking
Ranked #16 of 19 lakes in Kosciusko County
Nearby Lakes in Kosciusko County
Explore Pike Lake across LakeGrade
Fish species and top-graded lakes across Indiana
Fish species and best lakes in Kosciusko County
Species activity outlook by water temperature and season
Top lakes and where to stay in the Northern Indiana Lake Country area
High nutrients, frequent algae, reduced clarity
Indiana's cleanest and most-polluted lakes, ranked
More Indiana Lake Rankings
Other Grade F Lakes in Indiana
Eutrophic Lakes in Indiana
More records, surveys & data sources
EPA Impairment Status
Pike Lake is officially listed as impaired under Clean Water Act §303(d) in the 2024 EPA reporting cycle (IR category 5).
Causes of impairment
Source: EPA ATTAINS assessment unit INB06P1005_00 · Official waterbody report
Lake Size & Watershed
Size, shoreline, and watershed area from HydroLAKES (HydroSHEDS). Mean depth is a modeled estimate.
Regulated Pollution Sources Nearby
52 EPA-permitted facilities operate within about 5 miles of Pike Lake under Clean Water Act (NPDES) discharge permits. 1 facility has a reported Clean Water Act violation in the past three years.
- Milestone Technologies Inc. Dba Da-Lite Screen CompanyWarsaw · 2 mi away · NPDES INRM00651Recent violation
- Sun Metal Products, Inc.Warsaw · 0.7 mi away · NPDES IN0054640
- Meijer Lots B & CWarsaw · 0.7 mi away · NPDES INR10P184
- Belle Tire WarsawWarsaw · 0.7 mi away · NPDES INRA00940
- Growing Kids Learning CenterWarsaw · 0.7 mi away · NPDES INRA01608
- Kosciusko Community YmcaWarsaw · 0.8 mi away · NPDES INR10H262
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.
Data Sources
Water quality data from the EPA Water Quality Portal
Impairment status from EPA ATTAINS 303(d) database
Regulated discharger data from EPA ECHO (ICIS-NPDES)
Lake size & watershed from HydroLAKES (HydroSHEDS)
Grading methodology based on Metropolitan Council standards
Most recent sample: 2021-08-09
Monitoring stations: 1