Winslow Lake; Deep Basin; Bates Township
Winslow Lake; Deep Basin; Bates Township in Iron County, Michigan has a water quality grade of B (Good). Water clarity: 5.5 ft visibility. Phosphorus: 15 µg/L. Maximum depth: 25 ft. Surface area: 259.3 acres.
- Clarity
- 5.5 ft
- Max depth
- 25 ft
- Area
- 259 acres
- Type
- Mesotrophic
- Trend
- ↓ Declining
- Public access
- Yes
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Winslow Lake; Deep Basin; Bates Township is a 259-acre mesotrophic lake in Iron County, Michigan with a maximum depth of 25 feet. Water quality is graded B based on 1 sampling years through 2019. 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 20 other monitored lakes in Iron County, Winslow Lake; Deep Basin; Bates Township ranks #17 for water quality.
Source: EPA Water Quality Portal sampling records, EGLE, last sampled 2019-08-25. Grade methodology: LakeQuality methodology.
Watch Winslow Lake; Deep Basin; Bates Township water quality
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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.
Good for swimming, clear water with low algae levels
Water Quality Grade: B (Good)
Murky, only visible to about 5.5 ft. Phosphorus level: 15 µg/L. Trophic State Index: 48.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 5.5 ft | Not graded |
| Phosphorus | 15 µg/L | Good |
| Chlorophyll-a (Algae) | No recent samples | |
| Trophic State Index (TSI) | 48 | Mesotrophic |
Moderate nutrients, good water quality
Where to stay near Winslow Lake; Deep Basin; Bates Township
Compare lakeside cabins, hotels, and vacation rentals near Winslow Lake; Deep Basin; Bates Township in Iron County, Michigan — 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 Winslow Lake; Deep Basin; Bates Township
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Lake Details
| Characteristic | Value |
|---|---|
| Maximum Depth | 25 ft |
| Surface Area | 259 acres |
| Public Access | Yes |
Lake Size & Watershed
Size, shoreline, and watershed area from HydroLAKES (HydroSHEDS).
Recreation & Access
- Winslow LakePublic
Named access points in the USGS National Boat Ramps inventory, within about 3 miles. More lakes with boat ramps
Fishing Winslow Lake; Deep Basin; Bates Township
Water Quality Trend: ↓ Declining
Based on 3 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Phosphorus | ↓ Declining | +1.5 µg/L/yr | 3 |
County Ranking
Ranked #17 of 21 lakes in Iron County
Nearby Lakes With Higher Grades
Winslow Lake; Deep Basin; Bates Township holds Grade B. 2 nearby lakes hold higher nutrient-and-algae grades — useful for a swim day, not a reason to skip lodging here.
Nearby Lakes in Iron County
Frequently asked questions about Winslow Lake; Deep Basin; Bates Township
Where is Winslow Lake; Deep Basin; Bates Township?
- Winslow Lake; Deep Basin; Bates Township is a lake in Iron County, Michigan. LakeQuality grades it B for nutrients and algae. The letter is not a swimming clearance.
What is the water quality grade for Winslow Lake; Deep Basin; Bates Township?
- Winslow Lake; Deep Basin; Bates Township in Iron County, Michigan has a water quality grade of B (Good). Water clarity: 5.5 ft visibility. Phosphorus: 15 µg/L. Maximum depth: 25 ft. Surface area: 259.3 acres.
Is Winslow Lake; Deep Basin; Bates Township safe to swim in?
- Good for swimming, clear water with low algae levels. Winslow Lake; Deep Basin; Bates Township has a water quality grade of B (Good). Always check local health department advisories before swimming.
How deep is Winslow Lake; Deep Basin; Bates Township?
- Winslow Lake; Deep Basin; Bates Township has a maximum depth of 25 feet. The lake covers 259.3 acres.
Are there boat ramps on Winslow Lake; Deep Basin; Bates Township?
- Winslow Lake; Deep Basin; Bates Township has 1 documented boat landing in the USGS National Boat Ramps inventory. Named access points include Winslow Lake. Public access is listed as yes.
Explore Winslow Lake; Deep Basin; Bates Township across LakeQuality
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Other Grade B Lakes in Michigan
Gogebic County · 6.5 ft
Gogebic County · 5 ft
Gogebic County · 3 ft
Gogebic County · 7.5 ft
Keweenaw County · 17 ft
Keweenaw County · 7.5 ft
Mesotrophic Lakes in Michigan
Where this data comes from
13 measurements from 1 monitoring station, 2017–2019. Retrieved from the EPA Water Quality Portal on 2026-08-26.
Collected and reported by
- Michigan EGLE - MiCorps
21MICH_MICORPS13 samples · 2017–2019
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)
Named boat-access points from the USGS National Boat Ramps inventory