Reno Lake
Pope County, MinnesotaEutrophic
Reno Lake sits at a C on the grading scale — not impaired, not pristine, with summer measurements that vary year to year. 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 in the eutrophic range signals a lake doing what nutrient-loaded waters do — supporting an active algal community at the cost of clear water. A maximum depth of 23 ft puts Reno Lake in the middle of Minnesota's depth distribution. With 3,809 acres of surface and 11.6 miles of shoreline, Reno Lake is a large water by Minnesota standards — recreational pressure is spread across a long shoreline. Among the 25 graded lakes in Pope County, Reno Lake sits at rank 9, above the county median.
Reno 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. Walleye are documented at Reno Lake, one of 18 fish species on record for the lake. A documented public access point at Reno Lake makes the lake usable for shore fishing, paddle craft, and trailered boats. The lake has a partial ice record — 14 observed ice-outs, centered near Apr 11. The grade is based on limited monitoring — fewer than three independent measurement years contribute, so future updates may shift the letter.
Source: EPA Water Quality Portal sampling records, Minnesota DNR LakeFinder, last sampled 2024-09-16. Grade methodology: LakeGrade methodology.
Swimming Safety
Generally safe for swimming, moderate water quality
Water Quality Grade: C, Fair
Moderate clarity, visible to about 6.9 ft. Phosphorus level: 33 µg/L. Trophic State Index: 52.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 6.9 ft | C |
| Phosphorus | 33 µg/L | C |
| Chlorophyll-a (Algae) | No data | |
| Trophic State Index (TSI) | 52 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Lake Details
| Characteristic | Value |
|---|---|
| Maximum Depth | 23 ft |
| Average Depth | 17 ft |
| Surface Area | 3.8K acres |
| Shoreline Length | 11.6 mi |
| Littoral Zone | 53% |
| Public Access | Yes |
Fish Species
Click a species to see all Minnesota and Wisconsin lakes where it is found.
→ Best fishing times for Reno Lake (14-day solunar calendar)
→ Is it safe to eat fish from Reno Lake? (mercury & PFAS guide)
→ Reno Lake fishing regulations (limits, seasons, special rules)
Invasive Species
Water Quality Trend: ↓ Declining
Based on 5 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | ↓ Declining | -0.055 m/yr | 5 |
| Phosphorus | ↓ Declining | +2.9 µg/L/yr | 5 |
Ice Season
Historical ice data from Minnesota DNR (18 observations).
Estimated open water season: 234 days
| Earliest | Latest | |
|---|---|---|
| Ice-Out | 2024-03-13 (2024) | 2023-05-02 (2023) |
| Ice-In | 2019-11-12 (2019) | 2016-12-08 (2016) |
Most recent ice-out: 2026-04-06
Location
County Ranking
Ranked #9 of 25 lakes in Pope County
Nearby Lakes in Pope County
More Minnesota Lake Rankings
State Parks Near Reno Lake
Other Grade C Lakes in Minnesota
Eutrophic Lakes in Minnesota
DNR Fisheries Survey Summary
16 surveys on file from MN DNR Fisheries. Most recent: 2024-07-08 (Targeted Survey).
Top Species by Catch Rate
| Species | Avg CPUE | Avg Weight |
|---|---|---|
| Bluntnose Minnow | 80.49 | — |
| Spottail Shiner | 59.84 | — |
| MMS | 35.04 | — |
| Yellow Perch | 33.97 | 0.14 lb |
| Largemouth Bass | 13.57 | 1.57 lb |
| SUN | 12.46 | — |
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.
Yellow Perch
Largemouth Bass
From the 2024-07-08 survey
A targeted gill net survey was conducted during summer 2024 to assess the Walleye population. Data from this survey will contribute to a statewide study examining the impacts of zebra mussels on Walleye populations. Gill net catches averaged 18.4 fish/net, a substantial increase from the record-low level documented in…
DNR Reports & Resources
Minnesota DNR LakeFinder publishes lake survey, fish stocking, water access, and aquatic plant data for Reno Lake. 5 reports on file.
- —Fisheries Lake Survey — RenoFisheries Lake Survey · MN DNR LakeFinder
- —Aquatic Plant Report — Reno (0771)Aquatic Plant Report · MN DNR LakeFinder
- —Aquatic Plant Report — Reno (0940)Aquatic Plant Report · MN DNR LakeFinder
- —Fish Stocking History — RenoFish Stocking History · MN DNR LakeFinder
- —Public Water Access Sites — RenoPublic Water Access Sites · 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: 2024-09-16
Monitoring stations: 1