Norway Lake
Cass County, MinnesotaMesotrophic
The LakeGrade rubric puts Norway Lake at a C: clarity at 6.6 ft, 21 µg/L of phosphorus, and a TSI of 49 signal an intermediate trophic state. The lake's weakest score is on Secchi depth — the water looks more turbid than its phosphorus number alone would predict.
Mesotrophic conditions dominate at Norway Lake: enough nutrients for a healthy fishery, not so much that algal blooms become a chronic problem. Norway Lake is a shallow lake at 12 ft maximum depth, which means it warms quickly, mixes constantly, and amplifies nutrient inputs. Norway Lake covers 515 acres alongside 4.1 miles of shoreline — a mid-sized water that supports a working fishery without being so large that conditions diverge between basins. Norway Lake ranks 122 of 132 in Cass County — at the lower end of the locally monitored distribution.
Norway Lake has no invasive species recorded in Minnesota state databases as of 2024, though prevention practices still apply at all access points. The fishery is bass-led, with 14 documented species across the lake's records. A documented public access point at Norway Lake makes the lake usable for shore fishing, paddle craft, and trailered boats. The lake has a partial ice record — 10 observed ice-outs, centered near Apr 19. 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 2024-09-14. Grade methodology: LakeGrade methodology.
Track Norway Lake
Subscribe for LakeQuality updates by email. No spam, unsubscribe anytime.
Swimming Safety
Generally safe for swimming, moderate water quality
Water Quality Grade: C, Fair
Murky, only visible to about 6.6 ft. Phosphorus level: 20.5 µg/L. Trophic State Index: 49.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 6.6 ft | D |
| Phosphorus | 20.5 µg/L | B |
| Chlorophyll-a (Algae) | No data | |
| Trophic State Index (TSI) | 49 | Mesotrophic |
Moderate nutrients, good water quality
Lake Details
| Characteristic | Value |
|---|---|
| Maximum Depth | 12 ft |
| Surface Area | 514.89 acres |
| Shoreline Length | 4.1 mi |
| Littoral Zone | 100% |
| Public Access | Yes |
Fish Species
Click a species to see all Minnesota and Wisconsin lakes where it is found.
→ Best fishing times for Norway Lake (14-day solunar calendar)
→ Is it safe to eat fish from Norway Lake? (mercury & PFAS guide)
→ Norway Lake fishing regulations (limits, seasons, special rules)
Water Quality Trend: → Stable
Based on 2 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | ↑ Improving | +0.05 m/yr | 2 |
| Phosphorus | ↓ Declining | +13 µg/L/yr | 2 |
Ice Season
Historical ice data from Minnesota DNR (11 observations).
| Earliest | Latest | |
|---|---|---|
| Ice-Out | 2024-03-15 (2024) | 2022-05-05 (2022) |
| Ice-In | 2003-12-06 (2003) | 2003-12-06 (2003) |
Most recent ice-out: 2024-03-15
Location
County Ranking
Ranked #122 of 132 lakes in Cass County
Cleaner Lakes Within 30 Miles
Norway Lake holds Grade C. 5 nearby lakes hold higher grades.
- ALower Hay LakeCrow Wing County · mi · Two grade letters higher (C → A)
- AAda LakeCass County · mi · Two grade letters higher (C → A)
- ARainy LakeCass County · mi · Two grade letters higher (C → A)
- BHattie LakeCass County · mi · Higher grade (C → B)
- BBowen LakeCass County · mi · Higher grade (C → B)
Nearby Lakes in Cass County
More Minnesota Lake Rankings
Other Grade C Lakes in Minnesota
Mesotrophic Lakes in Minnesota
Compare Norway Lake With Nearby Lakes
DNR Fisheries Survey Summary
5 surveys on file from MN DNR Fisheries. Most recent: 2021-06-24 (Standard Survey).
Top Species by Catch Rate
| Species | Avg CPUE | Avg Weight |
|---|---|---|
| Bluegill | 27.42 | 0.17 lb |
| Yellow Perch | 13.12 | 0.16 lb |
| Northern Pike | 8.78 | 1.55 lb |
| Pumpkinseed | 8.75 | 0.16 lb |
| Yellow Bass | 5.88 | 0.58 lb |
| White Sucker | 3.22 | 2.47 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.
Bluegill
Yellow Perch
Northern Pike
Pumpkinseed
From the 2021-06-24 survey
While there was a fair number of fish caught during the 2021 survey on Norway Lake, no species really stood out as a species to travel to the lake and target. Northern Pike numbers were the high at 20.8/gill net and average size was 20.4". While 28% fell within the 22-26" protected slot there were plenty below (60%)…
DNR Reports & Resources
Minnesota DNR LakeFinder publishes lake survey, fish stocking, water access, and aquatic plant data for Norway Lake. 3 reports on file.
- —Fisheries Lake Survey — NorwayFisheries Lake Survey · MN DNR LakeFinder
- —Aquatic Plant Report — Norway (1507)Aquatic Plant Report · MN DNR LakeFinder
- —Public Water Access Sites — NorwayPublic Water Access Sites · MN DNR LakeFinder
Reservoir Info (USACE NID)
Norway Lake is a man-made reservoir impounded by the Norway Lake (completed 1909), built primarily for recreation on the Pine River; earth-type dam, 13 ft tall and 400 ft long.
- Surface area
- 500 ac
- Normal storage
- 1,740 ac-ft
- Max storage
- 3,720 ac-ft
- Drainage area
- 149 sq mi
- Hazard class
- Low
- Owner
- City of Pine River
Source: USACE National Inventory of Dams, NID ID MN00035 · Operator website
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: 2024-09-14
Monitoring stations: 1