Alsop Lake
Albany County, WyomingView mapDirections
Not enough samples to grade — no nutrient or algae measurement meets the evidence bar (at least 3 samples within 10 years). No letter yet. Here is what we do have.
- 22 ft max depth
- Public access
- Limited data
Alsop Lake in Albany County, Wyoming is not rated for water quality — its monitoring record does not meet the evidence bar. Phosphorus: 50 µg/L.
- Max depth
- ~22 ft est.
- Phosphorus
- 50 µg/L
- Trend
- → Stable
- Public access
- Yes
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Watch Alsop Lake’s letter
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Why Alsop Lake has no grade
We grade a lake only when the monitoring record supports a letter: at least three phosphorus or chlorophyll-a samples in the last ten years, scored against EPA National Lakes Assessment thresholds for this lake’s ecoregion. For Alsop Lake, no nutrient or algae measurement meets the evidence bar (at least 3 samples within 10 years). Sampling here has recorded phosphorus, but not water clarity and algae (chlorophyll-a).
Not Rated is not an F. It is EPA Integrated Reporting Category 3 — insufficient information. The water here may be excellent or poor; nobody has measured enough of it to say. Everything below that has been measured is still reported on this page.
Sampling is run by Wyoming DEQ and volunteer programs, and published through the EPA Water Quality Portal. Read the full grading methodology.
Alsop Lake is a lake in Albany County, Wyoming with an estimated average depth of about 22 feet. Limited fish-species data available. Public access is available with 1 public boat landing.
Source: EPA Water Quality Portal sampling records, Wyoming DEQ, last sampled 2014-09-16. Grade methodology: LakeQuality methodology.
What Alsop Lake is good for
From access and monitoring records, not editorial picks.
- Boat launch1 documented ramp
Swimming Safety
Not ratedLimited data
The letter is not a swimming clearance. Check local advisories before you swim.
Water quality measurements for Alsop Lake
These readings exist but are not enough for an A–F grade — see why.
No clarity data. Phosphorus 50 µg/L. TSI 61.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | No recent samples | |
| Phosphorus | 50 µg/L | Not graded |
| Chlorophyll-a (Algae) | No recent samples | |
| Trophic State Index (TSI) | 61 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Lake Details
| Characteristic | Value |
|---|---|
| Maximum Depth | ~22 ft est. |
| Average Depth | ~5 ft est. |
| Public Access | Yes |
Depth marked “est.” is a modeled maximum from GLOBathy (Khazaei et al. 2022, CC0), not a measured survey. Wyoming has not published bathymetry for Alsop Lake.
Lake Size & Watershed
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
- Alsop LakePublic
Named access points in the USGS National Boat Ramps inventory, within about 3 miles. More lakes with boat ramps
Fishing Alsop Lake
Water Quality Trend: → Stable
Based on 2 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Phosphorus | → Stable | 0 µg/L/yr | 2 |
Nearby Lakes in Albany County
Frequently asked questions about Alsop Lake
Where is Alsop Lake?
- Alsop Lake is a lake in Albany County, Wyoming. LakeQuality has not rated this lake (UNRATED) — no nutrient or algae measurement meets the evidence bar (at least 3 samples within 10 years).
What is the water quality grade for Alsop Lake?
- Alsop Lake in Albany County, Wyoming is not rated for water quality — its monitoring record does not meet the evidence bar. Phosphorus: 50 µg/L.
Is Alsop Lake safe to swim in?
- The letter is not a swimming clearance. Check local advisories before you swim.
How deep is Alsop Lake?
- No published bathymetric survey covers Alsop Lake, so its depth has not been measured. The HydroLAKES global model estimates an average depth of about 22 feet, but that is a modelled estimate derived from surrounding terrain rather than a measurement on the water, so treat it as approximate.
Are there boat ramps on Alsop Lake?
- Alsop Lake has 1 documented boat landing in the USGS National Boat Ramps inventory. Named access points include Alsop Lake. Public access is listed as yes.
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Where this data comes from
6 measurements from 1 monitoring station, 2013–2014. 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 · 2013–2014
Analytical methods
- Total Phosphorus After Block Digestion
Monitoring station identifiers (1)
Grade thresholds from the EPA National Lakes Assessment (EPA 841-R-24-006, Table 6-3), applied by ecoregion. See how grades are calculated 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