Cottonmill Reservoir
Cottonmill Reservoir in Buffalo County, Nebraska is not rated for water quality — its monitoring record does not meet the evidence bar. Surface area: 45 acres.
- Area
- 45 acres
- Public access
- Yes
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Why Cottonmill 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 Cottonmill 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 NDEE and volunteer programs, and published through the EPA Water Quality Portal. Read the full grading methodology.
Cottonmill Reservoir is a 45-acre lake in Buffalo County, Nebraska. Limited fish-species data available. Public access is available with 1 public boat landing.
Source: EPA Water Quality Portal sampling records, NDEE, last sampled recent years. Grade methodology: LakeQuality methodology.
Watch Cottonmill Reservoir 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 Cottonmill 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 Cottonmill Reservoir
Compare lakeside cabins, hotels, and vacation rentals near Cottonmill Reservoir in Buffalo County, Nebraska — 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 Cottonmill Reservoir
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Lake Details
| Characteristic | Value |
|---|---|
| Surface Area | 45 acres |
| Public Access | Yes |
No bathymetric survey has been published for Cottonmill Reservoir, so its depth is not documented here.
Recreation & Access
- CottonmillPublic
Named access points in the USGS National Boat Ramps inventory, within about 3 miles. More lakes with boat ramps
Fishing Cottonmill Reservoir
Nearby Lakes in Buffalo County
Frequently asked questions about Cottonmill Reservoir
Where is Cottonmill Reservoir?
- Cottonmill Reservoir is a lake in Buffalo County, Nebraska. LakeQuality has not rated this lake (UNRATED) — no water-quality sampling on record for this lake.
What is the water quality grade for Cottonmill Reservoir?
- Cottonmill Reservoir in Buffalo County, Nebraska is not rated for water quality — its monitoring record does not meet the evidence bar. Surface area: 45 acres.
Is Cottonmill Reservoir safe to swim in?
- Not rated for swimming — there is not enough monitoring data to judge this lake. Cottonmill Reservoir is not rated for water quality — its monitoring record does not meet the evidence bar. Always check local health department advisories before swimming.
Are there boat ramps on Cottonmill Reservoir?
- Cottonmill Reservoir has 1 documented boat landing in the USGS National Boat Ramps inventory. Named access points include Cottonmill. Public access is listed as yes.
Explore Cottonmill Reservoir across LakeQuality
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Where this data comes from
Measurements for Cottonmill Reservoir come from the EPA Water Quality Portal. Per-sample source details are not recorded for this lake.
Other records on this page
Named boat-access points from the USGS National Boat Ramps inventory