Sagamore Mine Lake
Sagamore Mine Lake in Crow Wing County, Minnesota is not rated for water quality — its monitoring record does not meet the evidence bar. Water clarity: 23.8 ft visibility. Maximum depth: 210 ft. Surface area: 118.52 acres.
- Clarity
- 23.8 ft
- Max depth
- 210 ft
- Area
- 119 acres
- Trend
- ↑ Improving
- Public access
- Yes
Next lake in Crow Wing County
Why Sagamore Mine Lake has no grade
We grade a lake only when its monitoring record clears the evidence bar: 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 Sagamore Mine Lake, the only measurement available is water clarity, which is not a water-quality indicator on its own — EPA's National Lakes Assessment does not grade clarity. Sampling here has recorded water clarity, but not phosphorus 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 MPCA and volunteer programs, and published through the EPA Water Quality Portal. Read the full grading methodology.
Sagamore Mine Lake is a 119-acre lake in Crow Wing County, Minnesota with a maximum depth of 210 feet (63-foot average). Overall water quality is improving over recent sampling years. The lake supports 11 documented fish species including black crappie, bluegill, and burbot. Public access is available with 1 public boat landing.
Source: EPA Water Quality Portal sampling records, Minnesota DNR LakeFinder, last sampled 2025-09-28. Grade methodology: LakeGrade methodology.
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Swimming Safety
Not ratedLimited data
Not rated for swimming — there is not enough monitoring data to judge this lake
Water quality measurements for Sagamore Mine Lake
These readings exist but do not meet the evidence bar for an A–F grade — see why.
Crystal clear, you can see 23.8 ft down. Trophic State Index: 31.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 23.8 ft | Not graded |
| Phosphorus | No recent samples | |
| Chlorophyll-a (Algae) | No recent samples | |
| Trophic State Index (TSI) | 31 | Oligotrophic |
Low nutrients, clear water, excellent for swimming
Where to stay near Sagamore Mine Lake
Compare lakeside cabins, hotels, and vacation rentals near Sagamore Mine Lake in Crow Wing 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.
Top-rated places to stay near Sagamore Mine Lake
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Lake Details
| Characteristic | Value |
|---|---|
| Maximum Depth | 210 ft |
| Average Depth | 63.4 ft |
| Surface Area | 119 acres |
| Shoreline Length | 3.3 mi |
| Littoral Zone | 47% |
| Public Access | Yes |
Lake Size & Watershed
Size, shoreline, and watershed area from HydroLAKES (HydroSHEDS).
Recreation & Access
- Sagamore Pit (Cuyuna Country State Recreation Area)Public
Fish Species
Click a species to see every graded lake where it is documented.
Fishing Sagamore Mine Lake
Water Quality Trend: ↑ Improving
Based on 4 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | ↑ Improving | +0.694 m/yr | 4 |
EPA Impairment Status
Sagamore Mine Lake is officially listed as impaired under Clean Water Act §303(d) in the 2024 EPA reporting cycle (IR category 5).
Causes of impairment
Source: EPA ATTAINS assessment unit MN18-0139-00 · Official waterbody report · Matched by proximity (1.82 km)
Graded lakes near Sagamore Mine Lake
Sagamore Mine Lake has no grade, but these lakes within a short drive do.
Nearby Lakes in Crow Wing County
Frequently asked questions about Sagamore Mine Lake
What is the water quality grade for Sagamore Mine Lake?
- Sagamore Mine Lake in Crow Wing County, Minnesota is not rated for water quality — its monitoring record does not meet the evidence bar. Water clarity: 23.8 ft visibility. Maximum depth: 210 ft. Surface area: 118.52 acres.
Is Sagamore Mine Lake safe to swim in?
- Not rated for swimming — there is not enough monitoring data to judge this lake. Sagamore Mine Lake is not rated for water quality — its monitoring record does not meet the evidence bar. Always check local health department advisories before swimming.
How deep is Sagamore Mine Lake?
- Sagamore Mine Lake has a maximum depth of 210 feet and an average depth of 63.4 feet. The lake covers 118.52 acres.
What fish are in Sagamore Mine Lake?
- Fish species found in Sagamore Mine Lake include black crappie, bluegill, burbot, hybrid sunfish, lake trout, largemouth bass, northern pike, rainbow trout, tullibee (cisco), white sucker, yellow perch. Sagamore Mine Lake is located in Crow Wing County, Minnesota.
Are there boat ramps on Sagamore Mine Lake?
- Sagamore Mine Lake has 1 documented boat landing in the USGS National Boat Ramps inventory. Named access points include Sagamore Pit (Cuyuna Country State Recreation Area). Public access is listed as yes.
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Where this data comes from
7 measurements from 1 monitoring station, 2025. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Minnesota Pollution Control Agency - Ambient Surface Water
MNPCA7 samples · 2025
Analytical methods
- Field measurement/observation, generic method
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
Impairment status from EPA ATTAINS 303(d) database
Lake size & watershed from HydroLAKES (HydroSHEDS)
Lake details from Minnesota DNR LakeFinder
Named boat-access points from the USGS National Boat Ramps inventory