Edith Lake
Edith Lake in Washington County, Minnesota has a water quality grade of A (Excellent). Water clarity: 8.2 ft visibility. Phosphorus: 14 µg/L. Chlorophyll-a (algae): 3.5 µg/L. Maximum depth: 43 ft. Surface area: 81.1 acres.
- Clarity
- 8.2 ft
- Typical in August
- 64°F
- Max depth
- 43 ft
- Area
- 81 acres
- Type
- Mesotrophic
- Public access
- No
Next lake in Washington County
Edith Lake is a 81-acre mesotrophic lake in Washington County, Minnesota with a maximum depth of 43 feet. Water quality is graded A based on 2 sampling years through 2024. Limited fish-species data available. No public access — the lake is private or restricted. Compared to the 74 other monitored lakes in Washington County, Edith Lake ranks #19 for water quality.
Source: EPA Water Quality Portal sampling records, Minnesota DNR LakeFinder, last sampled 2024-10-18. Grade methodology: LakeGrade methodology.
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Swimming Safety
Grade onlyLimited data
Based on clarity and algae grades from past sampling — we do not hold live water temperature and a current cyanobacteria reading for this lake. Check your state or county health department before you swim.
Excellent for swimming, crystal clear water with minimal algae
Water Quality Grade: A (Excellent)
Moderate clarity, visible to about 8.2 ft. Phosphorus level: 14 µg/L. Chlorophyll-a: 3.5 µg/L. Trophic State Index: 44.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 8.2 ft | Not graded |
| Phosphorus | 14 µg/L | Good |
| Chlorophyll-a (Algae) | 3.5 µg/L | Good |
| Trophic State Index (TSI) | 44 | Mesotrophic |
Moderate nutrients, good water quality
Where to stay near Edith Lake
Compare lakeside cabins, hotels, and vacation rentals near Edith Lake in Washington County, Minnesota — 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.
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Water Temperature
Edith Lake typically sits around 64°F at the surface in August. Summer average is about 61°F. Usually warmest in Aug (about 64°F) and coldest in May (about 51°F). These are typical values by month — not a live reading.
Typical surface water temperature by month, from 122 field readings (2011–2024) via the EPA Water Quality Portal. See the full Edith Lake water temperature breakdown →
Lake Details
| Characteristic | Value |
|---|---|
| Maximum Depth | 43 ft |
| Surface Area | 81 acres |
| Shoreline Length | 2.8 mi |
| Littoral Zone | 39% |
| Public Access | No |
Lake Size & Watershed
Size, shoreline, and watershed area from HydroLAKES (HydroSHEDS).
Fishing Edith Lake
County Ranking
Ranked #19 of 75 lakes in Washington County
Nearby Lakes in Washington County
Frequently asked questions about Edith Lake
What is the water quality grade for Edith Lake?
- Edith Lake in Washington County, Minnesota has a water quality grade of A (Excellent). Water clarity: 8.2 ft visibility. Phosphorus: 14 µg/L. Chlorophyll-a (algae): 3.5 µg/L. Maximum depth: 43 ft. Surface area: 81.1 acres.
Is Edith Lake safe to swim in?
- Excellent for swimming, crystal clear water with minimal algae. Edith Lake has a water quality grade of A (Excellent). Algae concentration (chlorophyll-a) is 3.5 µg/L. Always check local health department advisories before swimming.
What is the water temperature of Edith Lake?
- Edith Lake typically sits around 64°F at the surface in August, from 122 EPA Water Quality Portal field readings (2011–2024). That is a typical value for the month, not a live reading.
How deep is Edith Lake?
- Edith Lake has a maximum depth of 43 feet. The lake covers 81.1 acres.
Explore Edith Lake across LakeGrade
Fish species and top-graded lakes across Minnesota
Fish species and best lakes in Washington County
Species activity outlook by water temperature and season
Where to stay at Minnesota's top lakes, each with its grade
Lakes in the St. Croix Watershed, ranked by water quality
Moderate nutrients, good water quality
Minnesota's cleanest and most-polluted lakes, ranked
More Minnesota Lake Rankings
State Parks Near Edith Lake
Other Grade A Lakes in Minnesota
Mesotrophic Lakes in Minnesota
Where this data comes from
40 measurements from 1 monitoring station, 2024. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Minnesota Pollution Control Agency - Ambient Surface Water
MNPCA40 samples · 2024
Analytical methods
- Field measurement/observation, generic method
- Phosphorus by Colorimetry
- Analysis of Chlorophyll in Periphyton and Plankton
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)
Lake details from Minnesota DNR LakeFinder