---
type: compare
title: "Maple Lake vs Union Lake"
county: "Polk"
url: https://www.minnelakes.org/compare/maple-lake-vs-union-lake
---

# Maple Lake vs Union Lake

Two of the top-scoring lakes in Polk County, Minnesota, side by side.

| | [Maple Lake](https://www.minnelakes.org/lakes/polk-county/maple-lake) | [Union Lake](https://www.minnelakes.org/lakes/polk-county/union-lake) |
| --- | --- | --- |
| Lake Score | 67/100 | 59/100 |
| Nearest town | Mentor | Erskine |
| Surface area | 1,641 acres | 887 acres |
| Max depth | 14 ft | 83 ft |
| Shoreline | 19.8 mi | 14.6 mi |
| Water clarity | 4.7 ft | 6.9 ft |
| Public access | 2 public boat launches (concrete) | 1 public boat launch (asphalt) |
| Fish species | 12 | 12 |
| Game fish | Walleye, Northern Pike, Largemouth Bass, Black Crappie, Bluegill | Walleye, Northern Pike, Largemouth Bass, Black Crappie, Bluegill |
| Stocked | Yes | Yes |
| Special regulations | No | No |
| Swim beach | Yes | No |
| Camping | No | No |
| Invasive species | None listed | Eurasian watermilfoil, zebra mussel |

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*Source: [MinneLakes.org](https://www.minnelakes.org/compare/maple-lake-vs-union-lake)*