Wallis Reservoir
Carbon County, Wyoming60 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
Wallis Reservoir in Carbon County, Wyoming is not rated for water quality — its monitoring record does not meet the evidence bar. Phosphorus: 20 µg/L. Surface area: 60 acres.
- Area
- 60 acres
- Phosphorus
- 20 µg/L
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Watch Wallis Reservoir’s letter
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Why Wallis 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 Wallis Reservoir, 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.
Wallis Reservoir is a 60-acre lake in Carbon County, Wyoming.
Source: EPA Water Quality Portal sampling records, Wyoming DEQ, last sampled 2013-09-17. 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 Wallis Reservoir
These readings exist but are not enough for an A–F grade — see why.
No clarity data. Phosphorus 20 µg/L. TSI 47.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | No recent samples | |
| Phosphorus | 20 µg/L | Not graded |
| Chlorophyll-a (Algae) | No recent samples | |
| Trophic State Index (TSI) | 47 | Mesotrophic |
Moderate nutrients, good water quality
Lake Details
| Characteristic | Value |
|---|---|
| Surface Area | 60 acres |
No bathymetric survey has been published for Wallis Reservoir, so its depth is not documented here.
Fishing Wallis Reservoir
Reservoir Info (USACE NID)
Wallis Reservoir is a man-made reservoir impounded by the Kinney (completed 1904), built primarily for irrigation on the Dana Springs Creek; earth-type dam, 20 ft tall and 520 ft long.
- Surface area
- 60 ac
- Normal storage
- 480 ac-ft
- Max storage
- 691 ac-ft
- Drainage area
- 0 sq mi
- Hazard class
- Low
- Owner
- DANA MEADOWS WYOMING, LLC
Source: USACE National Inventory of Dams, NID ID WY00304 · Operator website · Matched by proximity (0.04 km)
Graded lakes near Wallis Reservoir
Wallis Reservoir has no grade, but these lakes within a short drive do.
Nearby Lakes in Carbon County
Frequently asked questions about Wallis Reservoir
Where is Wallis Reservoir?
- Wallis Reservoir 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 Wallis Reservoir?
- Wallis Reservoir in Carbon County, Wyoming is not rated for water quality — its monitoring record does not meet the evidence bar. Phosphorus: 20 µg/L. Surface area: 60 acres.
Is Wallis Reservoir safe to swim in?
- The letter is not a swimming clearance. Check local advisories before you swim.
Explore Wallis Reservoir across LakeQuality
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Where this data comes from
3 measurements from 1 monitoring station, 2013. 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 · 2013
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.