Lake Hamilton
Lake Hamilton in Franklin County, Illinois is not rated for water quality — its monitoring record does not meet the evidence bar. Surface area: 33 acres.
- Area
- 33 acres
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Why Lake Hamilton 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 Lake Hamilton, 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.
Lake Hamilton is a 33-acre lake in Franklin County, Illinois.
Source: EPA Water Quality Portal sampling records, Illinois EPA, last sampled recent years. Grade methodology: LakeQuality methodology.
Watch Lake Hamilton water quality
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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 Lake Hamilton
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 Lake Hamilton
Compare lakeside cabins, hotels, and vacation rentals near Lake Hamilton in Franklin 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 Lake Hamilton
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Lake Details
| Characteristic | Value |
|---|---|
| Surface Area | 33 acres |
No bathymetric survey has been published for Lake Hamilton, so its depth is not documented here.
Fishing Lake Hamilton
Nearby Lakes in Franklin County
Frequently asked questions about Lake Hamilton
Where is Lake Hamilton?
- Lake Hamilton is a lake in Franklin 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 Lake Hamilton?
- Lake Hamilton in Franklin County, Illinois is not rated for water quality — its monitoring record does not meet the evidence bar. Surface area: 33 acres.
Is Lake Hamilton safe to swim in?
- Not rated for swimming — there is not enough monitoring data to judge this lake. Lake Hamilton is not rated for water quality — its monitoring record does not meet the evidence bar. Always check local health department advisories before swimming.
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Where this data comes from
Measurements for Lake Hamilton come from the EPA Water Quality Portal. Per-sample source details are not recorded for this lake.