Yellowtail Reservoir Lpd
Big Horn County, WyomingView mapDirections
Wyoming DEQ publishes the water-quality measurements for Yellowtail Reservoir Lpd. Here is what has been measured.
- Limited data
Ask about Yellowtail Reservoir Lpd
Answers come straight from the public measurements and survey records on this page.
Yellowtail Reservoir Lpd in Big Horn County, Wyoming has water-quality measurements published by Wyoming DEQ, shown here as reported. Phosphorus: 10 µg/L.
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Yellowtail Reservoir Lpd is a lake in Big Horn County, Wyoming.
Source: EPA Water Quality Portal sampling records, Wyoming DEQ, last sampled 2015-09-28. Grade methodology: LakeQuality methodology.
Swimming conditions
No readingLimited data
Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Whether Yellowtail Reservoir Lpd 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 Lpd
These are the measurements Wyoming DEQ publishes for Yellowtail Reservoir Lpd, 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 10 µg/L. TSI 37.
| Metric | Value | EPA condition class |
|---|---|---|
| Water Clarity (Secchi Depth) | No recent samples | |
| Phosphorus | 10 µg/L | Measured, not scored |
| Chlorophyll-a (Algae) | No recent samples | |
| Trophic State Index (TSI) | 37 | Oligotrophic |
Low nutrients, clear water. No reading is a swimming clearance.
Fishing Yellowtail Reservoir Lpd
Water Quality Trend: → Stable
Based on 4 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Phosphorus | → Stable | -0.11 µg/L/yr | 4 |
Nearby Lakes in Big Horn County
Frequently asked questions about Yellowtail Reservoir Lpd
Where is Yellowtail Reservoir Lpd?
- Yellowtail Reservoir Lpd 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 Lpd?
- Yellowtail Reservoir Lpd in Big Horn County, Wyoming has water-quality measurements published by Wyoming DEQ, shown here as reported. Phosphorus: 10 µg/L.
Is Yellowtail Reservoir Lpd safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
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Where this data comes from
3 measurements from 1 monitoring station, 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_WATERSHED3 samples · 2015
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.