Carson Lake
Carson Lake in Clark County, South Dakota is not rated for water quality — its monitoring record does not meet the evidence bar. Surface area: 142 acres.
- Area
- 142 acres
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Why Carson 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 Carson 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 SD DANR and volunteer programs, and published through the EPA Water Quality Portal. Read the full grading methodology.
Carson Lake is a 142-acre lake in Clark County, South Dakota.
Source: EPA Water Quality Portal sampling records, SD DANR, 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 Carson 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 Carson Lake
Compare lakeside cabins, hotels, and vacation rentals near Carson Lake in Clark County, South Dakota — 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 Carson Lake
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Lake Details
| Characteristic | Value |
|---|---|
| Surface Area | 142 acres |
No bathymetric survey has been published for Carson Lake, so its depth is not documented here.
Fishing Carson Lake
Nearby Lakes in Clark County
Frequently asked questions about Carson Lake
Where is Carson Lake?
- Carson Lake is a lake in Clark County, South Dakota. LakeQuality has not rated this lake (UNRATED) — no water-quality sampling on record for this lake.
What is the water quality grade for Carson Lake?
- Carson Lake in Clark County, South Dakota is not rated for water quality — its monitoring record does not meet the evidence bar. Surface area: 142 acres.
Is Carson Lake safe to swim in?
- Not rated for swimming — there is not enough monitoring data to judge this lake. Carson Lake is not rated for water quality — its monitoring record does not meet the evidence bar. Always check local health department advisories before swimming.
Explore Carson Lake across LakeQuality
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Where this data comes from
Measurements for Carson Lake come from the EPA Water Quality Portal. Per-sample source details are not recorded for this lake.