Renner Reservoir D
Big Horn County, Wyoming70 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.
- 15 ft max depth
- Public access
- Limited data
Renner Reservoir D in Big Horn County, Wyoming is not rated for water quality — its monitoring record does not meet the evidence bar. Phosphorus: 20 µg/L. Surface area: 70 acres.
- Max depth
- ~15 ft est.
- Area
- 70 acres
- Phosphorus
- 20 µg/L
- Trend
- → Stable
- Public access
- Yes
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Watch Renner Reservoir D’s letter
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Why Renner 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 Renner 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.
Renner Reservoir D is a 70-acre lake in Big Horn County, Wyoming with an estimated average depth of about 15 feet. Limited fish-species data available. Public access is available.
Source: EPA Water Quality Portal sampling records, Wyoming DEQ, last sampled 2015-09-22. 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 Renner Reservoir D
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 |
|---|---|
| Maximum Depth | ~15 ft est. |
| Average Depth | ~13 ft est. |
| Surface Area | 70 acres |
| Public Access | Yes |
Depth marked “est.” is a modeled maximum from GLOBathy (Khazaei et al. 2022, CC0), not a measured survey. Wyoming has not published bathymetry for Renner Reservoir D.
Lake Size & Watershed
Size, shoreline, and watershed area from HydroLAKES (HydroSHEDS). Mean depth here is modelled, not surveyed — HydroLAKES v1.0 estimates lake depth from surrounding terrain rather than from soundings. Treat it as an approximation, and prefer a state bathymetric survey where one exists.
Fishing Renner Reservoir D
Water Quality Trend: → Stable
Based on 2 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Phosphorus | → Stable | 0 µg/L/yr | 2 |
Reservoir Info (USACE NID)
Renner Reservoir D is a man-made reservoir impounded by the Renner (completed 1950), built primarily for irrigation on the Buffalo Flat Creek; earth-type dam, 16 ft tall and 1,050 ft long.
- Surface area
- 70 ac
- Normal storage
- 366 ac-ft
- Max storage
- 584 ac-ft
- Drainage area
- 0 sq mi
- Hazard class
- Low
- Owner
- WYOMING GAME AND FISH COMMISSION
Source: USACE National Inventory of Dams, NID ID WY01059 · Operator website · Matched by proximity (0.14 km)
Graded lakes near Renner Reservoir D
Renner Reservoir D has no grade, but these lakes within a short drive do.
Nearby Lakes in Big Horn County
Frequently asked questions about Renner Reservoir D
Where is Renner Reservoir D?
- Renner Reservoir D is a lake in Big Horn 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 Renner Reservoir D?
- Renner Reservoir D in Big Horn County, Wyoming is not rated for water quality — its monitoring record does not meet the evidence bar. Phosphorus: 20 µg/L. Surface area: 70 acres.
Is Renner Reservoir D safe to swim in?
- The letter is not a swimming clearance. Check local advisories before you swim.
How deep is Renner Reservoir D?
- No published bathymetric survey covers Renner Reservoir D, so its depth has not been measured. The HydroLAKES global model estimates an average depth of about 15 feet, but that is a modelled estimate derived from surrounding terrain rather than a measurement on the water, so treat it as approximate. The lake covers 70 acres.
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Where this data comes from
6 measurements from 1 monitoring station, 2014–2015. 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_WATERSHED6 samples · 2014–2015
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.
Other records on this page
Lake size & watershed from HydroLAKES (HydroSHEDS)