Rice Lake
Scott County, MinnesotaHypereutrophic
On the LakeGrade rubric Rice Lake fails the cutoffs — a TSI of 76 and persistent algal pressure put it in the bottom tier. 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. The lake's maximum depth is not yet documented in state morphometric records — context for its physical structure remains limited. The lake's surface area is not consistently recorded across state datasets — physical context remains partial. Within Scott County's 24 graded lakes, Rice Lake ranks 16 — below the local median, though not at the bottom.
No invasive species are currently listed at Rice Lake — the lake remains off the Minnesota infested-waters roster. The state fisheries records do not list documented species for Rice Lake, which usually reflects a lack of formal fisheries survey work rather than an empty lake. No formal public access is documented at Rice Lake — most use is by shoreline residents and their guests. The grade is supported by multiple sampling years from Minnesota PCA volunteers and partner agencies, giving the letter a reasonably stable foundation.
Source: EPA Water Quality Portal sampling records, Minnesota DNR LakeFinder, last sampled 2024-10-22. Grade methodology: LakeGrade methodology.
Watch Rice Lake water quality
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Swimming Safety
Avoid swimming, very poor water quality, potential algae toxins
Water Quality Grade: F, Very Poor
Very murky, less than 1.7 ft of visibility. Phosphorus level: 647 µg/L. Chlorophyll-a: 25.5 µg/L. Trophic State Index: 76.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 1.7 ft | F |
| Phosphorus | 647 µg/L | F |
| Chlorophyll-a (Algae) | 25.5 µg/L | D |
| Trophic State Index (TSI) | 76 | Hypereutrophic |
Very high nutrients, dense algae, poor clarity
Water Quality Trend: ↑ Improving
Based on 2 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | ↑ Improving | +0.27 m/yr | 2 |
Location
County Ranking
Ranked #16 of 24 lakes in Scott County
Cleaner Lakes Within 30 Miles
Rice Lake holds Grade F. 4 nearby lakes hold higher grades.
- ABush LakeHennepin County · mi · Two grade letters higher (F → A)
- BDeans LakeScott County · mi · Two grade letters higher (F → B)
- CHyland LakeHennepin County · mi · Two grade letters higher (F → C)
- DBlue LakeScott County · mi · Higher grade (F → D)
Nearby Lakes in Scott County
More Minnesota Lake Rankings
State Parks Near Rice Lake
Other Grade F Lakes in Minnesota
Hypereutrophic Lakes in Minnesota
Data Sources
Water quality data from the EPA Water Quality Portal
Grading methodology based on Metropolitan Council standards
Most recent sample: 2024-10-22
Monitoring stations: 2