Sheep Creek Middle Reservoir
Elko County, NevadaView mapDirections
Not enough samples to grade — no nutrient or algae measurement meets the evidence bar (at least 3 samples within 10 years). No letter yet. Here is what we do have.
- Limited data
Sheep Creek Middle Reservoir in Elko County, Nevada is not rated for water quality — its monitoring record does not meet the evidence bar. Water clarity: 3 ft visibility. Phosphorus: 164.5 µg/L. Chlorophyll-a (algae): 63.7 µg/L.
- Clarity
- 3 ft
- Phosphorus
- 164.5 µg/L
- Chlorophyll-a
- 63.7 µg/L
- Trend
- ↓ Declining
Stays via Stay22
Stays near Sheep Creek Middle Reservoir
Compare lakeside cabins, hotels, and vacation rentals near Sheep Creek Middle Reservoir in Elko County, Nevada — 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 Sheep Creek Middle Reservoir
Prices for Sep 11–13, 4 adults. Change dates on the map below.
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 Nevada’s top lakes →
Watch Sheep Creek Middle Reservoir’s letter
Email me if this lake’s grade moves. Grades stay free.
Or email
Why Sheep Creek 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 Sheep Creek Middle Reservoir, no nutrient or algae measurement meets the evidence bar (at least 3 samples within 10 years). Sampling here has recorded water clarity, phosphorus and algae (chlorophyll-a).
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 NDEP and volunteer programs, and published through the EPA Water Quality Portal. Read the full grading methodology.
Sheep Creek Middle Reservoir is a lake in Elko County, Nevada. Overall water quality is declining over recent sampling years.
Source: EPA Water Quality Portal sampling records, NDEP, last sampled 2018-08-30. Grade methodology: LakeQuality methodology.
Swimming Safety
Not ratedLimited data
The letter is not a swimming clearance. Check local advisories before you swim.
Water quality measurements for Sheep Creek Middle Reservoir
These readings exist but are not enough for an A–F grade — see why.
Very murky, less than 3 ft of visibility. Phosphorus 164.5 µg/L. Chlorophyll-a 63.7 µg/L. TSI 70.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 3 ft | Not graded |
| Phosphorus | 164.5 µg/L | Not graded |
| Chlorophyll-a (Algae) | 63.7 µg/L | Not graded |
| Trophic State Index (TSI) | 70 | Hypereutrophic |
Very high nutrients, dense algae, poor clarity
Fishing Sheep Creek Middle Reservoir
Water Quality Trend: ↓ Declining
Based on 10 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Phosphorus | → Stable | +0.71 µg/L/yr | 10 |
| Chlorophyll-a | ↓ Declining | +1.92 µg/L/yr | 9 |
Graded lakes near Sheep Creek Middle Reservoir
Sheep Creek Middle Reservoir has no grade, but these lakes within a short drive do.
Nearby Lakes in Elko County
Frequently asked questions about Sheep Creek Middle Reservoir
Where is Sheep Creek Middle Reservoir?
- Sheep Creek Middle Reservoir is a lake in Elko County, Nevada. LakeQuality has not rated this lake (UNRATED) — no nutrient or algae measurement meets the evidence bar (at least 3 samples within 10 years).
What is the water quality grade for Sheep Creek Middle Reservoir?
- Sheep Creek Middle Reservoir in Elko County, Nevada is not rated for water quality — its monitoring record does not meet the evidence bar. Water clarity: 3 ft visibility. Phosphorus: 164.5 µg/L. Chlorophyll-a (algae): 63.7 µg/L.
Is Sheep Creek Middle Reservoir safe to swim in?
- The letter is not a swimming clearance. Check local advisories before you swim.
Explore Sheep Creek Middle Reservoir across LakeQuality
More Nevada Lake Rankings
Other Lakes in Nevada
Hypereutrophic Lakes in Nevada
Where this data comes from
4 measurements from 1 monitoring station, 2018. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Bureau of Reclamation
1119USBR_WQX4 samples · 2018
Analytical methods
- Depth, Secchi disk depth
- Phosphorus by Single Reagent Colorimetry
- 10200 H ~ Chlorophyll a-b-c Determination
Monitoring station identifiers (1)
Grade thresholds from the EPA National Lakes Assessment (EPA 841-R-24-006, Table 6-3), applied by ecoregion. See how grades are calculated and data sources.