Mumm Reservoir
Mumm Reservoir in Thayer County, Nebraska is not rated for water quality — its monitoring record does not meet the evidence bar. Surface area: 33 acres.
- Area
- 33 acres
Next lake in Thayer County
Swipe left or right on this bar to open the next or previous lake.
Why Mumm 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 Mumm 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.
Mumm Reservoir is a 33-acre lake in Thayer County, Nebraska.
Source: EPA Water Quality Portal sampling records, NDEE, last sampled recent years. Grade methodology: LakeQuality methodology.
Watch Mumm Reservoir water quality
Subscribe for LakeQuality updates by email. No spam, unsubscribe anytime.
Swimming Safety
Not ratedElevated nutrients
Not rated for swimming — there is not enough monitoring data to judge this lake
Water quality measurements for Mumm 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 Mumm Reservoir
Compare lakeside cabins, hotels, and vacation rentals near Mumm Reservoir in Thayer 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 Mumm Reservoir
Availability and prices from Stay22 partners (Booking.com, Vrbo, Expedia). We may earn a commission from bookings, at no extra cost to you.
Planning a whole trip? See where to stay at Nebraska’s top lakes →
Lake Details
| Characteristic | Value |
|---|---|
| Surface Area | 33 acres |
No bathymetric survey has been published for Mumm Reservoir, so its depth is not documented here.
Fishing Mumm Reservoir
Nearby Lakes in Thayer County
Frequently asked questions about Mumm Reservoir
Where is Mumm Reservoir?
- Mumm Reservoir is a lake in Thayer 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 Mumm Reservoir?
- Mumm Reservoir in Thayer County, Nebraska is not rated for water quality — its monitoring record does not meet the evidence bar. Surface area: 33 acres.
Is Mumm Reservoir safe to swim in?
- Not rated for swimming — there is not enough monitoring data to judge this lake. Mumm 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 Mumm Reservoir across LakeQuality
More Nebraska Lake Rankings
Other Lakes in Nebraska
Where this data comes from
Measurements for Mumm Reservoir come from the EPA Water Quality Portal. Per-sample source details are not recorded for this lake.