Red Lake
Red Lake in Douglas County, Wisconsin has a water quality grade of B (Good). Water clarity: 12 ft visibility. Phosphorus: 12.8 µg/L. Maximum depth: 37 ft. Surface area: 253 acres.
- Clarity
- 12 ft
- Max depth
- 37 ft
- Area
- 253 acres
- Type
- Mesotrophic
- Trend
- → Stable
- Public access
- Yes
Next lake in Douglas County
Red Lake is a 253-acre mesotrophic lake in Douglas County, Wisconsin with a maximum depth of 37 feet. Water quality is graded B based on 1 sampling years through 2026. Water clarity is improving over recent sampling years. The lake supports 4 documented fish species including Panfish, Largemouth Bass, and Northern Pike. Public access is available with 1 public boat landing. Compared to the 14 other monitored lakes in Douglas County, Red Lake ranks #8 for water quality.
Source: EPA Water Quality Portal sampling records, Wisconsin DNR Surface Water, last sampled 2026-07-13. Grade methodology: LakeGrade methodology.
Watch Red Lake water quality
Subscribe for LakeQuality updates by email. No spam, unsubscribe anytime.
Swimming Safety
Grade onlyLow algae
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.
Good for swimming, clear water with low algae levels
Water Quality Grade: B (Good)
Good clarity, visible to about 12 ft. Phosphorus level: 12.8 µg/L. Trophic State Index: 41.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 12 ft | Not graded |
| Phosphorus | 12.8 µg/L | Good |
| Chlorophyll-a (Algae) | No recent samples | |
| Trophic State Index (TSI) | 41 | Mesotrophic |
Moderate nutrients, good water quality
Where to stay near Red Lake
Compare lakeside cabins, hotels, and vacation rentals near Red Lake in Douglas County, Wisconsin — 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 Red Lake
Availability and prices from Stay22 partners (Booking.com, Vrbo, Expedia). We may earn a commission from bookings, at no extra cost to you.
Planning a whole trip? See where to stay at Wisconsin’s top lakes →
Lake Details
| Characteristic | Value |
|---|---|
| Maximum Depth | 37 ft |
| Surface Area | 253 acres |
| Public Access | Yes |
Lake Size & Watershed
Size, shoreline, and watershed area from HydroLAKES (HydroSHEDS).
Recreation & Access
- Red LakePublic
Fish Species
Click a species to see every graded lake where it is documented.
Fishing Red Lake
Invasive & Introduced Species
Red chips are ecologically harmful invasive species. Gray chips are stocked or introduced fish that aren't a current ecological concern.
WI DNR Lake Profile
Authoritative data from the Wisconsin DNR LakePages. Monitored by volunteers since 1993. 1 station on file (most recent sample 2025).
Fish Species (DNR-rated)
Water Quality Trend: → Stable
Based on 7 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | ↑ Improving | +0.268 m/yr | 7 |
| Phosphorus | ↓ Declining | +0.64 µg/L/yr | 7 |
County Ranking
Ranked #8 of 15 lakes in Douglas County
Nearby Lakes in Douglas County
Frequently asked questions about Red Lake
What is the water quality grade for Red Lake?
- Red Lake in Douglas County, Wisconsin has a water quality grade of B (Good). Water clarity: 12 ft visibility. Phosphorus: 12.8 µg/L. Maximum depth: 37 ft. Surface area: 253 acres.
Is Red Lake safe to swim in?
- Good for swimming, clear water with low algae levels. Red Lake has a water quality grade of B (Good). Always check local health department advisories before swimming.
How deep is Red Lake?
- Red Lake has a maximum depth of 37 feet. The lake covers 253 acres.
What fish are in Red Lake?
- Fish species found in Red Lake include Panfish, Largemouth Bass, Northern Pike, Walleye. Red Lake is located in Douglas County, Wisconsin.
Are there boat ramps on Red Lake?
- Red Lake has 1 documented boat landing in the USGS National Boat Ramps inventory. Named access points include Red Lake. Public access is listed as yes.
Explore Red Lake across LakeGrade
Depth, room, public access, and the state wake-sport rules
Fish species and top-graded lakes across Wisconsin
Fish species and best lakes in Douglas County
Species activity outlook by water temperature and season
Where to stay at Wisconsin's top lakes, each with its grade
Lakes in the St. Croix Watershed, ranked by water quality
Lakes in the Lake Superior Basin (MN+WI), ranked by water quality
Moderate nutrients, good water quality
Wisconsin's cleanest and most-polluted lakes, ranked
More Wisconsin Lake Rankings
Other Grade B Lakes in Wisconsin
Mesotrophic Lakes in Wisconsin
Where this data comes from
60 measurements from 1 monitoring station, 2020–2026. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Wisconsin Department of Natural Resources
WIDNR_WQX60 samples · 2020–2026
Analytical methods
- Phosphorus by Colorimetry
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)
Fish and recreation data from Wisconsin DNR Lakes
Named boat-access points from the USGS National Boat Ramps inventory