Lake Mt. Adams
Yakima County, WashingtonView mapDirections
No nutrient or algae sampling on record from Washington Ecology for this lake.
- 24 ft max depth
- Limited data
Ask about Lake Mt. Adams
Answers come straight from the public measurements and survey records on this page.
Lake Mt. Adams in Yakima County, Washington has water-quality measurements published by Washington Ecology, shown here as reported.
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Lake Mt. Adams is a lake in Yakima County, Washington with an estimated average depth of about 24 feet.
Source: EPA Water Quality Portal sampling records, WA Ecology, last sampled 2023-06-08. Grade methodology: LakeQuality methodology.
Swimming conditions
No readingLimited data
Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Whether Lake Mt. Adams is safe to swim in today is a call for the Washington State Department of Ecology and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.
Water quality measurements for Lake Mt. Adams
These are the measurements Washington Ecology publishes for Lake Mt. Adams, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.
No clarity data.
| Metric | Value | EPA condition class |
|---|---|---|
| Water Clarity (Secchi Depth) | No recent samples | |
| Phosphorus | No recent samples | |
| Chlorophyll-a (Algae) | No recent samples |
Lake Details
| Characteristic | Value |
|---|---|
| Maximum Depth | ~24 ft est. |
| Average Depth | ~17 ft est. |
Depth marked “est.” is a modeled maximum from GLOBathy (Khazaei et al. 2022, CC0), not a measured survey. Washington has not published bathymetry for Lake Mt. Adams.
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.
Fishing Lake Mt. Adams
Nearby Lakes in Yakima County
Frequently asked questions about Lake Mt. Adams
Where is Lake Mt. Adams?
- Lake Mt. Adams is a lake in Yakima County, Washington. Its water-quality measurements are published by Washington Ecology and shown on this page as reported.
What is the water quality of Lake Mt. Adams?
- Lake Mt. Adams in Yakima County, Washington has water-quality measurements published by Washington Ecology, shown here as reported.
Is Lake Mt. Adams safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
How deep is Lake Mt. Adams?
- No published bathymetric survey covers Lake Mt. Adams, so its depth has not been measured. The HydroLAKES global model estimates an average depth of about 24 feet, but that is a modelled estimate derived from surrounding terrain rather than a measurement on the water, so treat it as approximate.
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Where this data comes from
3 measurements from 1 monitoring station, 2022–2023. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Confederated Tribes and Bands of the Yakama Nation (Tribal)
YAKAMA_WQX3 samples · 2022–2023
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)