Lake Thibadeau
Lake Thibadeau in Hill County, Montana is not rated for water quality — its monitoring record does not meet the evidence bar. Surface area: 144 acres.
- Area
- 144 acres
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Why Lake Thibadeau 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 Thibadeau, 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 Montana DEQ and volunteer programs, and published through the EPA Water Quality Portal. Read the full grading methodology.
Lake Thibadeau is a 144-acre lake in Hill County, Montana.
Source: EPA Water Quality Portal sampling records, Montana DEQ, 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 Lake Thibadeau
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 Thibadeau
Compare lakeside cabins, hotels, and vacation rentals near Lake Thibadeau in Hill County, Montana — 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 Thibadeau
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Lake Details
| Characteristic | Value |
|---|---|
| Surface Area | 144 acres |
No bathymetric survey has been published for Lake Thibadeau, so its depth is not documented here.
Fishing Lake Thibadeau
Nearby Lakes in Hill County
Frequently asked questions about Lake Thibadeau
Where is Lake Thibadeau?
- Lake Thibadeau is a lake in Hill County, Montana. LakeQuality has not rated this lake (UNRATED) — no water-quality sampling on record for this lake.
What is the water quality grade for Lake Thibadeau?
- Lake Thibadeau in Hill County, Montana is not rated for water quality — its monitoring record does not meet the evidence bar. Surface area: 144 acres.
Is Lake Thibadeau safe to swim in?
- Not rated for swimming — there is not enough monitoring data to judge this lake. Lake Thibadeau 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 Thibadeau come from the EPA Water Quality Portal. Per-sample source details are not recorded for this lake.