Seminoe Reservoir Riverine Pelagic
Carbon County, WyomingView mapDirections
Wyoming DEQ publishes the water-quality measurements for Seminoe Reservoir Riverine Pelagic. Here is what has been measured.
- Eutrophic
- Limited data
Seminoe Reservoir Riverine Pelagic in Carbon County, Wyoming has water-quality measurements published by Wyoming DEQ, shown here as reported. Water clarity: 4.4 ft visibility. Phosphorus: 30 µg/L.
Seminoe Reservoir Riverine Pelagic is a productive, nutrient-rich eutrophic lake in Carbon County, Wyoming. Overall water quality is declining over recent sampling years. Compared to the 9 other monitored lakes in Carbon County, Seminoe Reservoir Riverine Pelagic ranks #1 for water quality.
Source: EPA Water Quality Portal sampling records, Wyoming DEQ, last sampled 2016-09-12. 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 Seminoe Reservoir Riverine Pelagic 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 Seminoe Reservoir Riverine Pelagic
These are the measurements Wyoming DEQ publishes for Seminoe Reservoir Riverine Pelagic, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.
Murky, only visible to about 4.4 ft. Phosphorus 30 µg/L. TSI 55.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 4.4ft | Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer. |
| Total phosphorus | 30µg/L | Good 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. | 55 | Eutrophic OligotrophicMesotrophicEutrophicHypereutrophic |
High nutrients, frequent algae, reduced clarity
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Fishing Seminoe Reservoir Riverine Pelagic
Water Quality Trend: Worsening
Based on 5 years of monitoring (2012–2016).
Phosphorus
Worsening+4.5 µg/L/yr5 years
Nearby Lakes in Carbon County
Frequently asked questions about Seminoe Reservoir Riverine Pelagic
Where is Seminoe Reservoir Riverine Pelagic?
- Seminoe Reservoir Riverine Pelagic is a lake in Carbon County, Wyoming. Its water-quality measurements are published by Wyoming DEQ and shown on this page as reported.
What is the water quality of Seminoe Reservoir Riverine Pelagic?
- Seminoe Reservoir Riverine Pelagic in Carbon County, Wyoming has water-quality measurements published by Wyoming DEQ, shown here as reported. Water clarity: 4.4 ft visibility. Phosphorus: 30 µg/L.
Is Seminoe Reservoir Riverine Pelagic safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Explore Seminoe Reservoir Riverine Pelagic across LakeQuality
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Where this data comes from
14 measurements from 2 monitoring stations, 2012–2016. 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_WATERSHED14 samples · 2012–2016
Analytical methods
- Secchi
- Total Phosphorus After Block Digestion
Monitoring station identifiers (2)
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.