Shirley Basin Reservoir D
Carbon County, Wyoming28 acresView 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
Shirley Basin Reservoir D in Carbon County, Wyoming is not rated for water quality — its monitoring record does not meet the evidence bar. Phosphorus: 80 µg/L. Surface area: 27.79 acres.
- Area
- 28 acres
- Phosphorus
- 80 µg/L
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Watch Shirley Basin Reservoir D’s letter
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Why Shirley Basin Reservoir D 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 Shirley Basin Reservoir D, no nutrient or algae measurement meets the evidence bar (at least 3 samples within 10 years). Sampling here has recorded phosphorus, but not water clarity 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 Wyoming DEQ and volunteer programs, and published through the EPA Water Quality Portal. Read the full grading methodology.
Shirley Basin Reservoir D is a 28-acre lake in Carbon County, Wyoming.
Source: EPA Water Quality Portal sampling records, Wyoming DEQ, last sampled 2014-09-08. 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 Shirley Basin Reservoir D
These readings exist but are not enough for an A–F grade — see why.
No clarity data. Phosphorus 80 µg/L. TSI 67.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | No recent samples | |
| Phosphorus | 80 µg/L | Not graded |
| Chlorophyll-a (Algae) | No recent samples | |
| Trophic State Index (TSI) | 67 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Lake Details
| Characteristic | Value |
|---|---|
| Surface Area | 28 acres |
No bathymetric survey has been published for Shirley Basin Reservoir D, so its depth is not documented here.
Fishing Shirley Basin Reservoir D
Reservoir Info (USACE NID)
Shirley Basin Reservoir D is a man-made reservoir impounded by the Shirley Basin Reservoir (completed 1941), built primarily for flood risk reduction on the Tributary to Muddy Creek; gravity-type dam, 25 ft tall and 714 ft long.
- Surface area
- 27.79 ac
- Max storage
- 70.4 ac-ft
- Drainage area
- 1,706 sq mi
- Hazard class
- Low
- Owner
- DOI BLM
Source: USACE National Inventory of Dams, NID ID WY01476 · Operator website · Matched by proximity (0.15 km)
Graded lakes near Shirley Basin Reservoir D
Shirley Basin Reservoir D has no grade, but these lakes within a short drive do.
Nearby Lakes in Carbon County
Frequently asked questions about Shirley Basin Reservoir D
Where is Shirley Basin Reservoir D?
- Shirley Basin Reservoir D is a lake in Carbon County, Wyoming. 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 Shirley Basin Reservoir D?
- Shirley Basin Reservoir D in Carbon County, Wyoming is not rated for water quality — its monitoring record does not meet the evidence bar. Phosphorus: 80 µg/L. Surface area: 27.79 acres.
Is Shirley Basin Reservoir D safe to swim in?
- The letter is not a swimming clearance. Check local advisories before you swim.
Explore Shirley Basin Reservoir D across LakeQuality
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Where this data comes from
3 measurements from 1 monitoring station, 2014. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- State of Wyoming Department of Environmental Quality Watershed Program
WYDEQ_WATERSHED3 samples · 2014
Analytical methods
- Total Phosphorus After Block Digestion
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.