Lak Reservoir
Weston County, Wyoming126 acresView mapDirections
Wyoming DEQ publishes the water-quality measurements for Lak Reservoir. Here is what has been measured.
- Public access
- Limited data
Lak Reservoir in Weston County, Wyoming has water-quality measurements published by Wyoming DEQ, shown here as reported. Water clarity: 22.4 ft visibility. Phosphorus: 10 µg/L. Surface area: 126 acres.
Lak Reservoir is a 126-acre lake in Weston County, Wyoming. Limited fish-species data available. Public access is available.
Source: EPA Water Quality Portal sampling records, Wyoming DEQ, last sampled 2019-09-09. Methodology: how these readings are compared.
What Lak Reservoir is good for
From access and monitoring records, not editorial picks.
- Clear water22.4 ft of visibility
Swimming conditions
No readingLimited data
Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Whether Lak Reservoir 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 Lak Reservoir
These are the measurements Wyoming DEQ publishes for Lak Reservoir, 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 22.4 ft down. Phosphorus 10 µg/L. TSI 35.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 22.4ft | Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer. |
| Total phosphorus | 10µg/L | Measured, not scored 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 Lak Reservoir
Answers come straight from the public measurements and survey records on this page.
Lake Details
Surface area
126 acres
Public access
Yes
Listed by Wyoming DEQ
The available depth estimate for Lak Reservoir is shallower than its measured water clarity, which cannot be right, so no depth is shown.
Lake Size & Watershed
Watershed (drainage) area
123 sq mi
HydroLAKES / HydroSHEDS
Shoreline
2 mi
HydroLAKES / HydroSHEDS
Elevation
4,373 ft
Size, shoreline, and watershed area from HydroLAKES (HydroSHEDS).
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Stays near Lak Reservoir
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Fishing Lak Reservoir
Reservoir Info (USACE NID)
Lak Reservoir is a man-made reservoir impounded by the Spencer (completed 1952), built primarily for irrigation on the Stockade Beaver Creek; earth-type dam, 45 ft tall and 1,350 ft long.
- Surface area
- 126 ac
- Normal storage
- 2,162 ac-ft
- Max storage
- 2,847 ac-ft
- Drainage area
- 20.1 sq mi
- Hazard class
- Significant
- Owner
- TRUE RANCHES, INC. (RANDY FERELLA)
Source: USACE National Inventory of Dams, NID ID WY00717 · Operator website
Nearby Lakes in Weston County
Frequently asked questions about Lak Reservoir
Where is Lak Reservoir?
- Lak Reservoir is a lake in Weston County, Wyoming. Its water-quality measurements are published by Wyoming DEQ and shown on this page as reported.
What is the water quality of Lak Reservoir?
- Lak Reservoir in Weston County, Wyoming has water-quality measurements published by Wyoming DEQ, shown here as reported. Water clarity: 22.4 ft visibility. Phosphorus: 10 µg/L. Surface area: 126 acres.
Is Lak Reservoir safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
How deep is Lak Reservoir?
- The available depth estimate for Lak Reservoir is shallower than its measured water clarity, which cannot be right, so no depth is shown. The lake covers 126 acres.
Can I fish at Lak Reservoir?
- Public access to Lak Reservoir is listed as yes on the lake record. Seasons, size and bag limits, and whether you need a license are set by Wyoming's fish and wildlife agency, so check its current regulations before you go.
Explore Lak Reservoir across LakeQuality
Planning a trip around Wind Cave?
Lak Reservoir is about 37 miles from Wind Cave 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 Wind Cave →More lakes in Wyoming
Other Lakes in Wyoming
Oligotrophic Lakes in Wyoming
Where this data comes from
6 measurements from 1 monitoring station, 2019. 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_WATERSHED6 samples · 2019
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)