Upper Peoria Lake
Upper Peoria Lake in Woodford County, Illinois is not rated for water quality — its monitoring record does not meet the evidence bar. Surface area: 15461 acres.
- Area
- 15,461 acres
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Why Upper Peoria Lake has no grade
We grade a lake only when the monitoring record supports a letter: at least three phosphorus or chlorophyll-a samples in the last ten years, scored against EPA National Lakes Assessment thresholds for this lake’s ecoregion. For Upper Peoria Lake, no water-quality sampling on record for this lake.
Not Rated is not an F. It is EPA Integrated Reporting Category 3 — insufficient information. The water here may be excellent or poor; nobody has measured enough of it to say. Everything below that has been measured is still reported on this page.
Sampling is run by Illinois EPA and volunteer programs, and published through the EPA Water Quality Portal. Read the full grading methodology.
Upper Peoria Lake is a 15,461-acre lake in Woodford County, Illinois.
Source: EPA Water Quality Portal sampling records, Illinois EPA, last sampled recent years. Grade methodology: LakeQuality methodology.
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Swimming Safety
Not ratedElevated nutrients
Not rated for swimming — there is not enough monitoring data to judge this lake
Water quality measurements for Upper Peoria Lake
These readings exist but are not enough for an A–F grade — see why.
No clarity data. Trophic State Index: undefined.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | No recent samples | |
| Phosphorus | No recent samples | |
| Chlorophyll-a (Algae) | No recent samples | |
| Trophic State Index (TSI) |
Where to stay near Upper Peoria Lake
Compare lakeside cabins, hotels, and vacation rentals near Upper Peoria Lake in Woodford County, Illinois — 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 Upper Peoria Lake
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Lake Details
| Characteristic | Value |
|---|---|
| Surface Area | 15,461 acres |
No bathymetric survey has been published for Upper Peoria Lake, so its depth is not documented here.
Recreation & Access
- Detweiller ParkPublic
Named access points in the USGS National Boat Ramps inventory, within about 3 miles. More lakes with boat ramps
Fishing Upper Peoria Lake
Nearby Lakes in Woodford County
Frequently asked questions about Upper Peoria Lake
Where is Upper Peoria Lake?
- Upper Peoria Lake is a lake in Woodford County, Illinois. LakeQuality has not rated this lake (UNRATED) — no water-quality sampling on record for this lake.
What is the water quality grade for Upper Peoria Lake?
- Upper Peoria Lake in Woodford County, Illinois is not rated for water quality — its monitoring record does not meet the evidence bar. Surface area: 15461 acres.
Is Upper Peoria Lake safe to swim in?
- Not rated for swimming — there is not enough monitoring data to judge this lake. Upper Peoria Lake is not rated for water quality — its monitoring record does not meet the evidence bar. Always check local health department advisories before swimming.
Are there boat ramps on Upper Peoria Lake?
- Upper Peoria Lake has 1 documented boat landing in the USGS National Boat Ramps inventory. Named access points include Detweiller Park.
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Where this data comes from
Measurements for Upper Peoria Lake come from the EPA Water Quality Portal. Per-sample source details are not recorded for this lake.
Other records on this page
Named boat-access points from the USGS National Boat Ramps inventory