Beach · Lake Superior · Minnesota
Knife River Marina Beach
A public beach on Lake Superior in Lake County, Minnesota, 0.61 miles of shore. The state samples the water for bacteria once a week through a 92-day swim season.
The beach
On the record
- Water
- Lake Superior
- Location
- Lake County, Minnesota
- Length
- 0.61 miles
- Owner
- Public
- Access
- Public Access
- Water sampling
- Yes — once a week in the swim season
- Swim season
- 92 days, as reported
- Monitoring tier
- Tier 2 (Tier 1 is highest)
- Water quality standard
- E. coli, single sample: 235 CFU per 100 mL
- EPA beach ID
- MN409498
- Coordinates
- 46.9444° N, 91.7798° W to 46.9472° N, 91.7804° W
As the state reported it to EPA for the 2025 season. Sampling schedules change year to year. How beach monitoring works →
Down the shore
Nearest Superior beaches
- Stony Point Beach2.0 mi · MN
- Stony Point Wayside Rest Beach2.5 mi · MN
- Bluebird Landing Beach3.9 mi · sampled · MN
- French River Beach6.2 mi · sampled · MN
- Agate Bay Beach7.2 mi · sampled · MN
- Two Harbors City Park Beach7.6 mi · MN
Straight-line distance.
By boat
Launches nearby
- Knife River Marina and Harbor0.1 mi · trailer ramp
- Knife River Beach0.2 mi · hand / carry-in launch
- French River6.2 mi · hand / carry-in launch
- Two Harbors, Agate Bay boat launch7.3 mi · trailer ramp
On the horizon
Lighthouses nearby
On shore nearby
Worth the stop
- North Shore Scenic Drive — Highway 617.4 mi · drive
- Gooseberry Falls State Park20 mi · park
Off the beach
What to fish on Lake Superior
Source
Facts on this page are from the EPA BEACON profile for beach MN409498, the record Minnesota files under the federal BEACH Act, retrieved 2026-10-10. The county is placed from the beach’s own coordinates. A blank field means the record is silent. Parking, fees, lifeguards and dog rules are set by whoever runs the beach; check with them before you go.
Chart shoreline generalized from Natural Earth (public domain). Not for navigation. Something wrong or missing? Write to contact@greatamericanlakes.com.