---
type: lake
name: "Union Lake"
county: "Polk"
nearest_town: "Erskine"
lake_type: "lake"
acres: 887
max_depth_ft: 83
latitude: 47.58279
longitude: -96.08289
lake_score: 59
dnr_lake_id: "60021700"
url: https://www.minnelakes.org/lakes/polk-county/union-lake
---

# Union Lake

Lake in Polk County, Minnesota, near Erskine

- **Surface Area**: 887 acres
- **Max Depth**: 83 ft
- **Shoreline**: 14.6 miles
- **Water Clarity**: 6.9 ft
- **Lake Type**: lake
- **Public Access**: 1 public boat launch (asphalt)
- **Lake Score**: 59/100 (composite of public data, not a visitor rating)

## About

Union Lake is an 887-acre lake near Erskine in Polk County, Minnesota. It reaches 83 feet at its deepest point, and has roughly 14.6 miles of shoreline. By surface area it ranks No. 2 among the 13 Polk County lakes in this directory. DNR surveys put average water clarity at about 6.9 feet.

Minnesota DNR fisheries surveys list 12 fish species here, including walleye, northern pike, largemouth bass, black crappie, bluegill, and pumpkinseed. The DNR has stocking records for the lake, so check the stocking report for the most recent species and year classes. The most recent fisheries survey on file dates to 2022.

There is one public boat launch (asphalt surface) managed by the Minnesota DNR. The lake is listed as infested with Eurasian watermilfoil and zebra mussel — clean, drain and dry your boat and gear before leaving. Ice typically goes out around April 24, based on 11 years of DNR ice-out records.

## Access

- **Public access**: 1 public boat launch (asphalt)
- **Managed by**: Minnesota DNR
- **Launch fee**: Free at DNR public water accesses

## Fishing

- **Species on DNR survey**: 12
- **Stocked**: Yes
- **Last DNR survey**: 2022
- **Special regulations**: No
- **Ice fishing**: Yes

## Activities

Fishing, Ice Fishing, Boating, Paddling

## Amenities

Boat Ramp

## Fish Species

Walleye, Northern Pike, Largemouth Bass, Black Crappie, Bluegill, Pumpkinseed, Yellow Perch, Black Bullhead, Brown Bullhead, Common Carp, Hybrid Sunfish, White Sucker

## Invasive Species

Eurasian watermilfoil, zebra mussel. Clean, drain and dry boats and gear before leaving.

## Ice-Out

- **Median ice-out**: April 24
- **Years of record**: 11
- **Earliest**: 2017-04-06
- **Latest**: 1996-05-08

## Nearby Lakes

- [Lake Sarah](https://www.minnelakes.org/lakes/polk-county/lake-sarah) - 3 miles, 366 acres
- [Lake Crystal](https://www.minnelakes.org/lakes/polk-county/lake-crystal) - 3.3 miles, 118 acres
- [Cameron Lake](https://www.minnelakes.org/lakes/polk-county/cameron-lake) - 6.4 miles, 225 acres
- [Maple Lake](https://www.minnelakes.org/lakes/polk-county/maple-lake) - 6.6 miles, 1,641 acres
- [Badger Lake](https://www.minnelakes.org/lakes/polk-county/badger-lake) - 7.5 miles, 256 acres
- [Cable Lake](https://www.minnelakes.org/lakes/polk-county/cable-lake) - 7.5 miles, 194 acres

## Links

- [Directions](https://www.google.com/maps/dir/?api=1&destination=47.58279,-96.08289)
- [Minnesota DNR LakeFinder](https://www.dnr.state.mn.us/lakefind/lake.html?id=60021700)
- [All lakes in Polk County](https://www.minnelakes.org/lakes/polk-county)

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