Festo Lake
Platte County, WyomingView mapDirections
Wyoming DEQ publishes the water-quality measurements for Festo Lake. Here is what has been measured.
- Hypereutrophic
- 18 ft max depth
- Limited data
Festo Lake in Platte County, Wyoming has water-quality measurements published by Wyoming DEQ, shown here as reported. Water clarity: 0.8 ft visibility. Phosphorus: 159.5 µg/L.
Festo Lake is a highly nutrient-loaded hypereutrophic lake in Platte County, Wyoming with an estimated average depth of about 18 feet. Overall water quality is declining over recent sampling years. Compared to the 8 other monitored lakes in Platte County, Festo Lake ranks #9 for water quality.
Source: EPA Water Quality Portal sampling records, Wyoming DEQ, last sampled 2018-09-04. 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 Festo 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 Festo Lake
These are the measurements Wyoming DEQ publishes for Festo Lake, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.
Very murky, less than 0.8 ft of visibility. Phosphorus 159.5 µg/L. TSI 79.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 0.8ft | Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer. |
| Total phosphorus | 160µg/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. | 79 | Hypereutrophic OligotrophicMesotrophicEutrophicHypereutrophic |
Very high nutrients, dense algae, poor clarity
Ask about Festo Lake
Answers come straight from the public measurements and survey records on this page.
Lake Details
Max depth
~18 ft est.
Depth marked “est.” is a modeled maximum from GLOBathy (Khazaei et al. 2022, CC0), not a measured survey. Wyoming has not published bathymetry for Festo Lake.
Lake Size & Watershed
Watershed (drainage) area
2 sq mi
HydroLAKES / HydroSHEDS
Surface area
44 acres
HydroLAKES / HydroSHEDS
Shoreline
1.1 mi
HydroLAKES / HydroSHEDS
Elevation
4,728 ft
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.
Stays via Stay22
Stays near Festo Lake
Compare lakeside cabins, hotels, and vacation rentals near Festo Lake in Platte 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 Festo Lake are listed below.
Top-rated places to stay near Festo Lake
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Fishing Festo Lake
Water quality readings over time
2 seasons of samples on record (2015–2018). Calling a direction takes at least 4 years of the same measurement.
Water clarity
Worsening2 years
Phosphorus
Worsening+40.67 µg/L/yr2 years
Nearby Lakes in Platte County
Frequently asked questions about Festo Lake
Where is Festo Lake?
- Festo Lake is a lake in Platte County, Wyoming. Its water-quality measurements are published by Wyoming DEQ and shown on this page as reported.
What is the water quality of Festo Lake?
- Festo Lake in Platte County, Wyoming has water-quality measurements published by Wyoming DEQ, shown here as reported. Water clarity: 0.8 ft visibility. Phosphorus: 159.5 µg/L.
Is Festo Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
How deep is Festo Lake?
- No published bathymetric survey covers Festo Lake, so its depth has not been measured. The HydroLAKES global model estimates an average depth of about 18 feet, but that is a modelled estimate derived from surrounding terrain rather than a measurement on the water, so treat it as approximate.
Explore Festo Lake across LakeQuality
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Where this data comes from
12 measurements from 1 monitoring station, 2015–2018. 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_WATERSHED12 samples · 2015–2018
Analytical methods
- Secchi
- 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.
Other records on this page
Lake size & watershed from HydroLAKES (HydroSHEDS)