Columbia Road Reservoir
Columbia Road Reservoir in Brown County, South Dakota is not rated for water quality — its monitoring record does not meet the evidence bar. Surface area: 2851 acres.
- Area
- 2,851 acres
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Why Columbia Road Reservoir 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 Columbia Road Reservoir, 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.
Columbia Road Reservoir is a 2,851-acre lake in Brown 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 Columbia Road Reservoir
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 Columbia Road Reservoir
Compare lakeside cabins, hotels, and vacation rentals near Columbia Road Reservoir in Brown 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 Columbia Road Reservoir
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Lake Details
| Characteristic | Value |
|---|---|
| Surface Area | 2,851 acres |
No bathymetric survey has been published for Columbia Road Reservoir, so its depth is not documented here.
Fishing Columbia Road Reservoir
Nearby Lakes in Brown County
Frequently asked questions about Columbia Road Reservoir
Where is Columbia Road Reservoir?
- Columbia Road Reservoir is a lake in Brown 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 Columbia Road Reservoir?
- Columbia Road Reservoir in Brown County, South Dakota is not rated for water quality — its monitoring record does not meet the evidence bar. Surface area: 2851 acres.
Is Columbia Road Reservoir safe to swim in?
- Not rated for swimming — there is not enough monitoring data to judge this lake. Columbia Road Reservoir 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 Columbia Road Reservoir come from the EPA Water Quality Portal. Per-sample source details are not recorded for this lake.