Moran Bay Lake
Teton County, WyomingView mapDirections
Wyoming DEQ publishes the water-quality measurements for Moran Bay Lake. Here is what has been measured.
- Limited data
Moran Bay Lake in Teton County, Wyoming has water-quality measurements published by Wyoming DEQ, shown here as reported. Water clarity: 18.3 ft visibility.
Moran Bay Lake is a lake in Teton County, Wyoming. Overall water quality is declining over recent sampling years.
Source: EPA Water Quality Portal sampling records, Wyoming DEQ, last sampled 2022-06-15. Methodology: how these readings are compared.
What Moran Bay Lake is good for
From access and monitoring records, not editorial picks.
- Clear water18.3 ft of visibility
Swimming conditions
No readingLimited data
Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Whether Moran Bay Lake 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 Moran Bay Lake
These are the measurements Wyoming DEQ publishes for Moran Bay Lake, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.
Crystal clear, you can see 18.3 ft down. TSI 35.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 18.3ft | Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer. |
| Total phosphorus | No reading The nutrient that most limits algae growth in freshwater. More phosphorus, more algae potential. | |
| 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. | 35 | Oligotrophic OligotrophicMesotrophicEutrophicHypereutrophic |
Low nutrients, clear water. No reading is a swimming clearance.
Ask about Moran Bay Lake
Answers come straight from the public measurements and survey records on this page.
Stays via Stay22
Stays near Moran Bay Lake
Compare lakeside cabins, hotels, and vacation rentals near Moran Bay Lake in Teton 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.
Top-rated places to stay near Moran Bay Lake
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Fishing Moran Bay Lake
Water quality readings over time
2 seasons of samples on record (2021–2022). Calling a direction takes at least 4 years of the same measurement.
Water clarity
Worsening2 years
Nearby Lakes in Teton County
Frequently asked questions about Moran Bay Lake
Where is Moran Bay Lake?
- Moran Bay Lake is a lake in Teton County, Wyoming. Its water-quality measurements are published by Wyoming DEQ and shown on this page as reported.
What is the water quality of Moran Bay Lake?
- Moran Bay Lake in Teton County, Wyoming has water-quality measurements published by Wyoming DEQ, shown here as reported. Water clarity: 18.3 ft visibility.
Is Moran Bay Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Explore Moran Bay Lake across LakeQuality
6.6 mi away · 100 ft
2 thermal springs within 21.8 mi, nearest Kelly Warm Spring
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
Planning a trip around Grand Teton?
Moran Bay Lake is about 3 miles from Grand Teton National Park. Crowds there swing hard by season, so the month you pick changes both how busy the park is and what lodging costs.
Best time to visit Grand Teton →More lakes in Wyoming
Other Lakes in Wyoming
Oligotrophic Lakes in Wyoming
Where this data comes from
4 measurements from 1 monitoring station, 2021–2022. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Bureau of Reclamation
1119USBR_WQX4 samples · 2021–2022
Analytical methods
- Zebra/Quagga Mussel APHA 10200G Modified
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.