Oliver Lake
LaGrange County, Indiana390 acresView mapDirections
IDEM publishes the water-quality measurements for Oliver Lake. Here is what has been measured.
- Mesotrophic
- Impaired · PCBs
- 90 ft max depth
- Public access
Oliver Lake in LaGrange County, Indiana has water-quality measurements published by IDEM, shown here as reported. Phosphorus: 12.5 µg/L. Chlorophyll-a (algae): 3 µg/L. Maximum depth: 89.9 ft. Surface area: 390 acres.
Oliver Lake is a 390-acre mesotrophic lake in LaGrange County, Indiana with a maximum depth of 90 feet (40-foot average). Limited fish-species data available. Public access is available with 1 public boat landing.
Source: EPA Water Quality Portal sampling records, IDEM, last sampled 2024-08-18. Methodology: how these readings are compared.
What Oliver Lake is good for
From access and monitoring records, not editorial picks.
- Boat launch1 documented ramp
- Deep water89.9 ft surveyed max depth
Swimming conditions
Readings onlyModerate algae
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. Oliver Lake is listed impaired under Clean Water Act §303(d) (IR 5) for pCBs. Check local advisories before you swim.
Whether Oliver 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 Oliver Lake
These are the measurements IDEM publishes for Oliver Lake, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.
No clarity data. Phosphorus 12.5 µg/L. Chlorophyll-a 3 µg/L.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | No reading How deep a black-and-white disk stays visible from the surface. Higher is clearer. | |
| Total phosphorus | 12.5µg/L | Good GoodFairPoor |
| Chlorophyll-a (algae) | 3µg/L | Good GoodFairPoor |
Moderate nutrients, good water quality
Ask about Oliver Lake
Answers come straight from the public measurements and survey records on this page.
Lake Details
Max depth
89.9 ft
Average depth
40 ft
Surface area
390 acres
Shoreline
6.4 mi
Public access
Yes
Listed by IDEM
Recreation & Access
- Pigeon River 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 Oliver Lake
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Fishing Oliver Lake
EPA Impairment Status
Oliver 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: Fish consumption.
Source: EPA ATTAINS assessment unit INJ01P1025_00 · Official waterbody report
Nearby Lakes in LaGrange County
Frequently asked questions about Oliver Lake
Where is Oliver Lake?
- Oliver Lake is a lake in LaGrange County, Indiana. Its water-quality measurements are published by IDEM and shown on this page as reported.
What is the water quality of Oliver Lake?
- Oliver Lake in LaGrange County, Indiana has water-quality measurements published by IDEM, shown here as reported. Phosphorus: 12.5 µg/L. Chlorophyll-a (algae): 3 µg/L. Maximum depth: 89.9 ft. Surface area: 390 acres.
Is Oliver Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Oliver Lake is listed impaired under Clean Water Act §303(d) (IR 5) for pCBs. Check local advisories before you swim.
How deep is Oliver Lake?
- Oliver Lake has a maximum depth of 89.9 feet and an average depth of 40 feet. The lake covers 390 acres.
Are there boat ramps on Oliver Lake?
- Oliver Lake has 1 documented boat landing in the USGS National Boat Ramps inventory. Named access points include Pigeon River Fish & Wildlife Area. Public access is listed as yes.
Can I fish at Oliver Lake?
- Oliver 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
Measurements for Oliver Lake come from the EPA Water Quality Portal. Per-sample source details are not recorded for this lake.
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
Named boat-access points from the USGS National Boat Ramps inventory