Lake Hattie
Albany County, Wyoming3,032 acresView mapDirections
Wyoming DEQ publishes the water-quality measurements for Lake Hattie. Here is what has been measured.
- Mesotrophic
- 95 ft max depth
- Public access
- Limited data
Lake Hattie in Albany County, Wyoming has water-quality measurements published by Wyoming DEQ, shown here as reported. Water clarity: 8.4 ft visibility. Phosphorus: 10 µg/L. Surface area: 3032 acres.
Lake Hattie is a 3,032-acre mesotrophic lake in Albany County, Wyoming with an estimated average depth of about 95 feet. Overall water quality is declining over recent sampling years. Limited fish-species data available. Public access is available with 1 public boat landing. Compared to the 4 other monitored lakes in Albany County, Lake Hattie ranks #3 for water quality.
Source: EPA Water Quality Portal sampling records, Wyoming DEQ, last sampled 2020-09-17. Methodology: how these readings are compared.
Lake Hattie covers about 3,000 acres in Albany County. It has one public boat landing. If you are planning to stay, you can search lake houses and cabins around Lake Hattie on Vrbo, or look for a hotel room near the lake on Booking.com or Expedia.
What Lake Hattie is good for
From access and monitoring records, not editorial picks.
- Boat launch1 documented ramp
- Big water3,032 acres
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 Lake Hattie 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 Lake Hattie
These are the measurements Wyoming DEQ publishes for Lake Hattie, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.
Moderate clarity, visible to about 8.4 ft. Phosphorus 10 µg/L. TSI 42.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 8.4ft | Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer. |
| Total phosphorus | 10µg/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. | 42 | Mesotrophic OligotrophicMesotrophicEutrophicHypereutrophic |
Moderate nutrients, good water quality
Ask about Lake Hattie
Answers come straight from the public measurements and survey records on this page.
Lake Details
Max depth
~95 ft est.
Surface area
3,032 acres
Public access
Yes
Listed by Wyoming DEQ
Depth marked “est.” is a modeled maximum from GLOBathy (Khazaei et al. 2022, CC0), not a measured survey. Wyoming has not published bathymetry for Lake Hattie.
Lake Size & Watershed
Watershed (drainage) area
50 sq mi
HydroLAKES / HydroSHEDS
Shoreline
9.1 mi
HydroLAKES / HydroSHEDS
Elevation
7,270 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.
Recreation & Access
- Lake HattiePublic
Named access points in the USGS National Boat Ramps inventory, within about 3 miles. More lakes with boat ramps
Stays via Stay22
Stays near Lake Hattie
Compare lakeside cabins, hotels, and vacation rentals near Lake Hattie in Albany 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 Lake Hattie
Prices for Oct 30–Nov 1, 4 adults. Change dates on the map below.
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Fishing Lake Hattie
Water quality readings over time
2 seasons of samples on record (2019–2020). Calling a direction takes at least 4 years of the same measurement.
Water clarity
Worsening2 years
Phosphorus
Stable0 µg/L/yr2 years
Reservoir Info (USACE NID)
Lake Hattie is a man-made reservoir impounded by the Lake Hattie (completed 1912), built primarily for irrigation on the Laramie River Offstream; earth-type dam, 43 ft tall and 1,480 ft long.
- Surface area
- 3,032 ac
- Normal storage
- 65,260 ac-ft
- Max storage
- 130,182 ac-ft
- Drainage area
- 31.6 sq mi
- Hazard class
- Significant
- Owner
- PIONEER CANAL-LAKE HATTIE IRRIGATION DISTRICT
Source: USACE National Inventory of Dams, NID ID WY00015 · Operator website
Nearby Lakes in Albany County
Frequently asked questions about Lake Hattie
Where is Lake Hattie?
- Lake Hattie is a lake in Albany County, Wyoming. Its water-quality measurements are published by Wyoming DEQ and shown on this page as reported.
What is the water quality of Lake Hattie?
- Lake Hattie in Albany County, Wyoming has water-quality measurements published by Wyoming DEQ, shown here as reported. Water clarity: 8.4 ft visibility. Phosphorus: 10 µg/L. Surface area: 3032 acres.
Is Lake Hattie safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
How deep is Lake Hattie?
- No published bathymetric survey covers Lake Hattie, so its depth has not been measured. The HydroLAKES global model estimates an average depth of about 95 feet, but that is a modelled estimate derived from surrounding terrain rather than a measurement on the water, so treat it as approximate. The lake covers 3032 acres.
Are there boat ramps on Lake Hattie?
- Lake Hattie has 1 documented boat landing in the USGS National Boat Ramps inventory. Named access points include Lake Hattie. Public access is listed as yes.
Can I fish at Lake Hattie?
- Lake Hattie has 1 documented boat landing in the USGS National Boat Ramps inventory. 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 Lake Hattie across LakeQuality
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Other Lakes in Wyoming
Mesotrophic Lakes in Wyoming
Where this data comes from
24 measurements from 2 monitoring stations, 2019–2020. 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_WATERSHED24 samples · 2019–2020
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.
Other records on this page
Lake size & watershed from HydroLAKES (HydroSHEDS)
Named boat-access points from the USGS National Boat Ramps inventory