Othorp Lake
Othorp Lake in Lincoln County, Montana is not rated for water quality — its monitoring record does not meet the evidence bar. Surface area: 150 acres.
- Area
- 150 acres
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Why Othorp 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 Othorp 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 Montana DEQ and volunteer programs, and published through the EPA Water Quality Portal. Read the full grading methodology.
Othorp Lake is a 150-acre lake in Lincoln 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 Othorp 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 Othorp Lake
Compare lakeside cabins, hotels, and vacation rentals near Othorp Lake in Lincoln 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 Othorp Lake
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Lake Details
| Characteristic | Value |
|---|---|
| Surface Area | 150 acres |
No bathymetric survey has been published for Othorp Lake, so its depth is not documented here.
Fishing Othorp Lake
Nearby Lakes in Lincoln County
Frequently asked questions about Othorp Lake
Where is Othorp Lake?
- Othorp Lake is a lake in Lincoln 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 Othorp Lake?
- Othorp Lake in Lincoln County, Montana is not rated for water quality — its monitoring record does not meet the evidence bar. Surface area: 150 acres.
Is Othorp Lake safe to swim in?
- Not rated for swimming — there is not enough monitoring data to judge this lake. Othorp Lake 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 Othorp Lake come from the EPA Water Quality Portal. Per-sample source details are not recorded for this lake.