Sagamore Mine
Crow Wing County, Minnesota, near Riverton. DNR lake ID 18052300.
Sagamore Mine is a 118.5-acre lake in Crow Wing County, Minnesota, near Riverton. Its deepest point reaches 210 ft, and about 47% of the lake is shallower than 15 feet. Summer water clarity averages 23.4 feet in Minnesota Pollution Control Agency monitoring, which places it in the oligotrophic nutrient class. It is not on the DNR infested waters list as of September 2026. DNR surveys document northern pike, largemouth bass, bluegill, yellow perch.
Buying or selling on Sagamore Mine? Ask us what lakeshore here actually sells for, which stretches of shoreline buyers compete for, and what’s coming up before it’s listed.
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Quick facts
| DNR lake ID | 18052300 |
|---|---|
| County | Crow Wing County, near Riverton |
| Surface area | 118.5 acres |
| Maximum depth | 210 ft |
| Mean depth | 63.4 ft |
| Share under 15 ft | 47% |
| Water clarity (summer) | 23.4 ft through 2025 |
| Nutrient class | Oligotrophic |
| Invasive species | Not on DNR infested waters list (Sept 2026) |
| Public water accesses | 1 |
Water quality
Summer averages from Minnesota Pollution Control Agency monitoring through 2025: clarity 23.4 ft. Using the Carlson trophic state index, Sagamore Mine rates as oligotrophic.
Fishing on Sagamore Mine
The most recent DNR standard fish survey was in 2008 (18 years ago). Catch per net is compared with the DNR’s typical range for lakes of the same type.
| Species | Net | Catch per net | Typical range |
|---|---|---|---|
| Northern pike | gill | 1.14 | 2.2 to 8.7 |
| Northern pike | trap | 0.44 | n/a |
| Yellow perch | gill | 1.71 | 1.5 to 13.8 |
| Yellow perch | trap | 0.67 | 0.4 to 2.3 |
| Bluegill | gill | 2.71 | n/a |
| Bluegill | trap | 103.0 | 7.7 to 43.4 |
| Largemouth bass | gill | 0.86 | 0.5 to 1.7 |
| Largemouth bass | trap | 1.0 | 0.4 to 1.5 |
| Pumpkinseed | trap | 1.0 | 1.4 to 5.9 |
| Hybrid sunfish | gill | 0.14 | n/a |
| Hybrid sunfish | trap | 8.78 | n/a |
Largest fish measured in recent DNR samples: Largemouth bass 19.0 in (2008), Northern pike 36.0 in (2008).
Game and panfish documented since 2005: Northern pike, Largemouth bass, Bluegill, Yellow perch, Pumpkinseed, Hybrid sunfish, Green sunfish, Rainbow trout, Bowfin, Yellow bullhead.
Fishing regulations
No lake-specific regulation found in Minnesota Rules or the DNR sunfish list. Statewide and zone regulations apply.
Regulations change. Confirm with the DNR before fishing.
Invasive species
Not on the Minnesota DNR infested waters list as of September 2026. That means no confirmed listing, not a guarantee the lake is free of invasive species.
Public boat access
- Sagamore Pit: 1 concrete slab launch ramp, 1 dock, 10 trailer spaces. North of State Highway 210 on Twp Rd 59. Directions
DNR water access records (2023). Confirm current conditions with the DNR.
Nearby lakes
- Roe Mine 1.0 mi, Crow Wing County
- Hay Lake 1.0 mi, Crow Wing County
- Little Rabbit Lake 1.1 mi, Crow Wing County
- Little Black Hoof Lake 1.5 mi, Crow Wing County
- Portage Lake 2.2 mi, Crow Wing County
- Black Hoof Lake 2.4 mi, Crow Wing County
- Horseshoe Lake 2.7 mi, Crow Wing County
- Pascoe Lake 2.8 mi, Crow Wing County
Questions about Sagamore Mine
How deep is Sagamore Mine?
Sagamore Mine reaches a maximum depth of 210 ft according to Minnesota DNR records. About 47% of the lake is shallower than 15 feet.
How big is Sagamore Mine?
Sagamore Mine covers about 118.5 acres in Crow Wing County, Minnesota.
How clear is Sagamore Mine?
Summer water clarity on Sagamore Mine averages 23.4 feet (Secchi depth) in MPCA monitoring through 2025. Its trophic state is oligotrophic.
Does Sagamore Mine have zebra mussels or other invasive species?
Sagamore Mine is not on the Minnesota DNR infested waters list as of September 2026. That means there is no confirmed listing; it is not a guarantee the lake is free of invasive species.
What fish are in Sagamore Mine?
Minnesota DNR surveys document northern pike, largemouth bass, bluegill, yellow perch, pumpkinseed, hybrid sunfish, green sunfish, rainbow trout, bowfin, yellow bullhead in Sagamore Mine. The most recent standard survey was in 2008.
Where is the public boat access on Sagamore Mine?
Sagamore Mine has 1 public water access site on DNR record: Sagamore Pit.
Are there lake homes for sale on Sagamore Mine?
Homes on Sagamore Mine come up for sale throughout the year, and some sell before they’re ever publicly advertised. Tell us what you’re looking for and our agents will run a custom search and send you matching homes on Sagamore Mine and nearby lakes, including off-market opportunities when available.
What is it like to live on Sagamore Mine?
Small, quiet water suited to paddling and fishing, about 47% shallow shoreline under 15 feet, and summer clarity around 23.4 feet. Conditions vary by property, so walk the frontage and ask us what similar homes have sold for.
Are there special fishing regulations on Sagamore Mine?
No lake-specific regulation was found for Sagamore Mine in Minnesota Rules or the DNR sunfish list. Statewide and zone regulations apply.
Ask us about Sagamore Mine
Whether you’re buying, selling, or just curious, our team works Crow Wing County lakes every day. Send us a note or call (218) 656-6469.
Sources: Minnesota DNR LakeFinder records, DNR fish surveys (latest 2008), DNR infested waters list (Sept 2026), Minnesota Rules 6264.0400 (April 2026), MPCA monitoring via the Water Quality Portal, DNR water access records (2023), LAGOS-US. Lakewide information from public data; it does not describe any specific property. Verify shoreline, bottom type, and depth at any frontage.