Cook Middle Reservoir
Cook Middle Reservoir in Box Butte County, Nebraska is not rated for water quality — its monitoring record does not meet the evidence bar. Surface area: 30 acres.
- Area
- 30 acres
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Why Cook Middle 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 Cook Middle 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.
Cook Middle Reservoir is a 30-acre lake in Box Butte County, Nebraska.
Source: EPA Water Quality Portal sampling records, NDEE, last sampled recent years. Grade methodology: LakeQuality methodology.
Watch Cook Middle 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 Cook Middle 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 Cook Middle Reservoir
Compare lakeside cabins, hotels, and vacation rentals near Cook Middle Reservoir in Box Butte 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 Cook Middle Reservoir
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Lake Details
| Characteristic | Value |
|---|---|
| Surface Area | 30 acres |
No bathymetric survey has been published for Cook Middle Reservoir, so its depth is not documented here.
Fishing Cook Middle Reservoir
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Frequently asked questions about Cook Middle Reservoir
Where is Cook Middle Reservoir?
- Cook Middle Reservoir is a lake in Box Butte 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 Cook Middle Reservoir?
- Cook Middle Reservoir in Box Butte County, Nebraska is not rated for water quality — its monitoring record does not meet the evidence bar. Surface area: 30 acres.
Is Cook Middle Reservoir safe to swim in?
- Not rated for swimming — there is not enough monitoring data to judge this lake. Cook Middle Reservoir is not rated for water quality — its monitoring record does not meet the evidence bar. Always check local health department advisories before swimming.
Explore Cook Middle Reservoir across LakeQuality
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Where this data comes from
Measurements for Cook Middle Reservoir come from the EPA Water Quality Portal. Per-sample source details are not recorded for this lake.