Yellowtail Reservoir Rpd
Big Horn County, WyomingView mapDirections
Wyoming DEQ publishes the water-quality measurements for Yellowtail Reservoir Rpd. Here is what has been measured.
- Eutrophic
- Limited data
Yellowtail Reservoir Rpd in Big Horn County, Wyoming has water-quality measurements published by Wyoming DEQ, shown here as reported. Phosphorus: 95 µg/L.
Yellowtail Reservoir Rpd is a productive, nutrient-rich eutrophic lake in Big Horn County, Wyoming. Compared to the 4 other monitored lakes in Big Horn County, Yellowtail Reservoir Rpd ranks #5 for water quality.
Source: EPA Water Quality Portal sampling records, Wyoming DEQ, last sampled 2016-09-19. Methodology: how these readings are compared.
Swimming conditions
Readings onlyLimited data
Based on clarity and algae readings from past sampling — there is no live water temperature and a current cyanobacteria reading for this lake. Check your state or county health department before you swim.
Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Whether Yellowtail Reservoir Rpd is safe to swim in today is a call for the Wyoming Department of Environmental Quality and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.
Water quality measurements for Yellowtail Reservoir Rpd
These are the measurements Wyoming DEQ publishes for Yellowtail Reservoir Rpd, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.
No clarity data. Phosphorus 95 µg/L. TSI 70.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | No reading How deep a black-and-white disk stays visible from the surface. Higher is clearer. | |
| Total phosphorus | 95µg/L | Poor GoodFairPoor |
| Chlorophyll-a (algae) | No reading The green pigment in algae — a direct measure of how much algae is in the water. | |
| Trophic state (TSI)Carlson's 0–100 index of how much algae a lake can support, from clarity, phosphorus and chlorophyll-a. | 70 | Eutrophic OligotrophicMesotrophicEutrophicHypereutrophic |
High nutrients, frequent algae, reduced clarity
Ask about Yellowtail Reservoir Rpd
Answers come straight from the public measurements and survey records on this page.
Stays via Stay22
Stays near Yellowtail Reservoir Rpd
Compare lakeside cabins, hotels, and vacation rentals near Yellowtail Reservoir Rpd in Big Horn County, Wyoming — 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. The water-quality readings cover nutrients and algae, not lodging. Cabins and rentals around Yellowtail Reservoir Rpd are listed below.
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Fishing Yellowtail Reservoir Rpd
Water Quality Trend: Stable
Based on 4 years of monitoring (2014–2019).
Phosphorus
Stable-0.11 µg/L/yr4 years
Nearby Lakes in Big Horn County
Frequently asked questions about Yellowtail Reservoir Rpd
Where is Yellowtail Reservoir Rpd?
- Yellowtail Reservoir Rpd is a lake in Big Horn County, Wyoming. Its water-quality measurements are published by Wyoming DEQ and shown on this page as reported.
What is the water quality of Yellowtail Reservoir Rpd?
- Yellowtail Reservoir Rpd in Big Horn County, Wyoming has water-quality measurements published by Wyoming DEQ, shown here as reported. Phosphorus: 95 µg/L.
Is Yellowtail Reservoir Rpd safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Explore Yellowtail Reservoir Rpd across LakeQuality
16.6 mi away · 200 ft
14.5 mi away · recorded at 68°F
Species activity outlook by water temperature and season
Where to stay at Wyoming's top lakes, each with its readings
Wyoming's cleanest lakes, ranked on agency measurements
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Where this data comes from
10 measurements from 1 monitoring station, 2014–2016. 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_WATERSHED10 samples · 2014–2016
Analytical methods
- Total Phosphorus After Block Digestion
Monitoring station identifiers (1)
EPA condition classes from the National Lakes Assessment (EPA 841-R-24-006, Table 6-3), applied by ecoregion. See where the data comes from and data sources.