Rice Lake
Hennepin County, MinnesotaHypereutrophic
Rice Lake earns an F: 348 µg/L of phosphorus and clarity at 2.0 ft signal heavy nutrient loading from the surrounding watershed. Sub-grades cluster within a single letter of each other, which usually means the lake is in stable trophic balance rather than fighting one specific stressor.
A TSI above 70 puts Rice Lake in hypereutrophic territory: visible blooms are common, and clarity rarely climbs even in early summer. Rice Lake is a shallow lake at 12 ft maximum depth, which means it warms quickly, mixes constantly, and amplifies nutrient inputs. Rice Lake covers 365 acres alongside 9.5 miles of shoreline — a mid-sized water that supports a working fishery without being so large that conditions diverge between basins. Within Hennepin County's 95 graded lakes, Rice Lake ranks 67 — below the local median, though not at the bottom.
Rice Lake is on the Minnesota infested-waters list for zebra mussels — boaters should follow clean-drain-dry protocols when moving gear to or from the lake. Bass fishing is part of the appeal: the species list runs to 16, anchored by largemouth and/or smallmouth bass. The lake lacks a documented public access point, so visitor use is limited. The lake has a partial ice record — 21 observed ice-outs, centered near Apr 2. Monitoring depth is thin here: the LakeGrade rubric is applied to a small number of sample years, and the grade will be revised as more data accumulates.
Source: EPA Water Quality Portal sampling records, Minnesota DNR LakeFinder, last sampled 2024-10-20. Grade methodology: LakeGrade methodology.
Swimming Safety
Avoid swimming, very poor water quality, potential algae toxins
Water Quality Grade: F, Very Poor
Very murky, less than 2 ft of visibility. Phosphorus level: 348.4 µg/L. Trophic State Index: 78.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 2 ft | F |
| Phosphorus | 348.4 µg/L | F |
| Chlorophyll-a (Algae) | No data | |
| Trophic State Index (TSI) | 78 | Hypereutrophic |
Very high nutrients, dense algae, poor clarity
Lake Details
| Characteristic | Value |
|---|---|
| Maximum Depth | 11.5 ft |
| Surface Area | 365.48 acres |
| Shoreline Length | 9.5 mi |
| Littoral Zone | 97% |
| Public Access | No |
Fish Species
Click a species to see all Minnesota and Wisconsin lakes where it is found.
→ Best fishing times for Rice Lake (14-day solunar calendar)
→ Is it safe to eat fish from Rice Lake? (mercury & PFAS guide)
→ Rice Lake fishing regulations (limits, seasons, special rules)
Invasive Species
Water Quality Trend: ↑ Improving
Based on 5 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | ↑ Improving | +0.077 m/yr | 5 |
| Phosphorus | ↑ Improving | -72.6 µg/L/yr | 3 |
Ice Season
Historical ice data from Minnesota DNR (32 observations).
Estimated open water season: 243 days
| Earliest | Latest | |
|---|---|---|
| Ice-Out | 2024-03-04 (2024) | 2018-04-30 (2018) |
| Ice-In | 2022-11-20 (2022) | 2015-12-19 (2015) |
Most recent ice-out: 2026-03-29
Location
County Ranking
Ranked #67 of 95 lakes in Hennepin County
Nearby Lakes in Hennepin County
More Minnesota Lake Rankings
State Parks Near Rice Lake
Other Grade F Lakes in Minnesota
Hypereutrophic Lakes in Minnesota
DNR Fisheries Survey Summary
3 surveys on file from MN DNR Fisheries. Most recent: 1994-07-11 (Standard Survey).
Top Species by Catch Rate
| Species | Avg CPUE | Avg Weight |
|---|---|---|
| Black Bullhead | 103.96 | 0.33 lb |
| Yellow Perch | 25.36 | 0.2 lb |
| Bluegill | 18.03 | 0.24 lb |
| Black Crappie | 13.45 | 0.21 lb |
| Hybrid Sunfish | 5.57 | 0.3 lb |
| GOS | 5.33 | 0.13 lb |
CPUE = catch per unit effort, averaged across surveys (excludes juvenile shoreline seining). Higher CPUE = more abundant in standardized sampling.
Length Distributions
Number of fish caught at each inch class in the most recent survey that recorded lengths. Red dashed line marks an approximate trophy threshold for that species.
Black Bullhead
Yellow Perch
Bluegill
Black Crappie
From the 1994-07-11 survey
Both bluegills and black crappies were found in above average numbers. Each species had an average weight of approximately 1/4 of a pound. The northern pike population is also high. The average weight and length are 2.6 pounds and 21.6 inches. Twenty five percent of the northern pike sampled were longer than twenty…
DNR Reports & Resources
Minnesota DNR LakeFinder publishes lake survey, fish stocking, water access, and aquatic plant data for Rice Lake. 2 reports on file.
- —Fisheries Lake Survey — RiceFisheries Lake Survey · MN DNR LakeFinder
- —Fish Stocking History — RiceFish Stocking History · MN DNR LakeFinder
Data Sources
Water quality data from the EPA Water Quality Portal
Grading methodology based on Metropolitan Council standards
Lake details from Minnesota DNR LakeFinder
Ice data from Minnesota DNR Climate
Most recent sample: 2024-10-20
Monitoring stations: 3