---
type: lake
name: "Boulder Lake"
county: "Lake"
nearest_town: "Prairie Portage"
lake_type: "lake"
acres: 259
max_depth_ft: 54
latitude: 48.01177
longitude: -91.11992
lake_score: 39
dnr_lake_id: "38014000"
url: https://www.minnelakes.org/lakes/lake-county/boulder-lake
---

# Boulder Lake

Lake in Lake County, Minnesota, near Prairie Portage

- **Surface Area**: 259 acres
- **Max Depth**: 54 ft
- **Average Depth**: 14 ft
- **Shoreline**: 6.1 miles
- **Water Clarity**: 9 ft
- **Lake Type**: lake
- **Public Access**: Public access on record
- **Lake Score**: 39/100 (composite of public data, not a visitor rating)

## About

Boulder Lake is a 259-acre lake near Prairie Portage in Lake County, Minnesota. It reaches 54 feet at its deepest point, with an average depth of about 14 feet, and has roughly 6.1 miles of shoreline. DNR surveys put average water clarity at about 9 feet.

The DNR has no fish survey on file for this lake, so treat any fishing as exploratory.

The DNR lists public water access for the lake; confirm the launch type before towing a trailer in. 3 campgrounds are mapped close to the shoreline for overnight stays.

## Access

- **Public access**: Public access on record
- **Managed by**: Not recorded
- **Launch fee**: Free at DNR public water accesses

## Activities

Paddling, Camping

## Amenities

Campground

## Fish Species

No DNR fish survey on file

## Nearby Lakes

- [Adams Lake](https://www.minnelakes.org/lakes/lake-county/adams-lake) - 1.4 miles, 475 acres
- [Sagus Lake](https://www.minnelakes.org/lakes/lake-county/sagus-lake) - 2 miles, 160 acres
- [Raven Lake](https://www.minnelakes.org/lakes/lake-county/raven-lake) - 2 miles, 179 acres
- [Makwa Lake](https://www.minnelakes.org/lakes/lake-county/makwa-lake) - 2.8 miles, 128 acres
- [Beaver Lake](https://www.minnelakes.org/lakes/lake-county/beaver-lake) - 2.9 miles, 218 acres
- [Fraser Lake](https://www.minnelakes.org/lakes/lake-county/fraser-lake) - 3.2 miles, 695 acres

## Links

- [Directions](https://www.google.com/maps/dir/?api=1&destination=48.01177,-91.11992)
- [Minnesota DNR LakeFinder](https://www.dnr.state.mn.us/lakefind/lake.html?id=38014000)
- [All lakes in Lake County](https://www.minnelakes.org/lakes/lake-county)

---
*Source: [MinneLakes.org](https://www.minnelakes.org/lakes/lake-county/boulder-lake)*