Straight Lake
Becker County, MinnesotaMesotrophic
Straight Lake carries a solid B grade — strong on most parameters, with measurements that hold up well across the summer season. The lake's weakest score is on Secchi depth — the water looks more turbid than its phosphorus number alone would predict.
The lake sits in the mesotrophic zone — the band where most well-managed Minnesota lakes fall. The lake's 63 ft maximum depth is in the upper tier for Minnesota — deep enough for cold-water fish to find refuge in summer. Straight Lake covers 471 acres alongside 9.8 miles of shoreline — a mid-sized water that supports a working fishery without being so large that conditions diverge between basins. Straight Lake sits at rank 54 of 93 in Becker County, in the lower half of the local distribution.
Straight Lake has no invasive species recorded in Minnesota state databases as of 2021, though prevention practices still apply at all access points. Muskie are on the species list at Straight Lake, alongside the lake's 15 other documented fish. Public access is available — the lake is on the Minnesota PCA public-access list. Ice-out has been recorded 9 times at Straight Lake, with a median around Apr 15. 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 2021-09-09. Grade methodology: LakeGrade methodology.
Swimming Safety
Good for swimming, clear water with low algae levels
Water Quality Grade: B, Good
Moderate clarity, visible to about 8 ft. Phosphorus level: 14 µg/L. Trophic State Index: 45.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 8 ft | C |
| Phosphorus | 14 µg/L | A |
| Chlorophyll-a (Algae) | No data | |
| Trophic State Index (TSI) | 45 | Mesotrophic |
Moderate nutrients, good water quality
Lake Details
| Characteristic | Value |
|---|---|
| Maximum Depth | 63 ft |
| Average Depth | 15 ft |
| Surface Area | 471.44 acres |
| Shoreline Length | 9.8 mi |
| Littoral Zone | 38% |
| Public Access | Yes |
Fish Species
Click a species to see all Minnesota and Wisconsin lakes where it is found.
→ Best fishing times for Straight Lake (14-day solunar calendar)
→ Is it safe to eat fish from Straight Lake? (mercury & PFAS guide)
→ Straight Lake fishing regulations (limits, seasons, special rules)
Ice Season
Historical ice data from Minnesota DNR (15 observations).
Estimated open water season: 227 days
| Earliest | Latest | |
|---|---|---|
| Ice-Out | 2016-03-30 (2016) | 2008-05-07 (2008) |
| Ice-In | 2014-11-09 (2014) | 2004-12-12 (2004) |
Most recent ice-out: 2016-03-30
Location
County Ranking
Ranked #54 of 93 lakes in Becker County
Nearby Lakes in Becker County
More Minnesota Lake Rankings
State Parks Near Straight Lake
Other Grade B Lakes in Minnesota
Mesotrophic Lakes in Minnesota
DNR Fisheries Survey Summary
12 surveys on file from MN DNR Fisheries. Most recent: 2020-08-24 (Standard Survey).
Top Species by Catch Rate
| Species | Avg CPUE | Avg Weight |
|---|---|---|
| Yellow Perch | 21.10 | 0.1 lb |
| Bluegill | 18.03 | 0.14 lb |
| MTS | 13.75 | — |
| Largemouth Bass | 10.33 | 0.62 lb |
| Northern Pike | 5.17 | 1.85 lb |
| Pumpkinseed | 4.89 | 0.16 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.
Yellow Perch
Bluegill
Largemouth Bass
Northern Pike
From the 2020-08-24 survey
Straight Lake is located in Osage, in eastern Becker County. Straight has a surface area of 471 acres and a maximum depth of 63 feet. A state-owned public access is located on the south shore of the lake. The Minnesota Department of Natural Resources (DNR) has classified Minnesota's lakes into 43 different types based…
DNR Reports & Resources
Minnesota DNR LakeFinder publishes lake survey, fish stocking, water access, and aquatic plant data for Straight Lake. 4 reports on file.
- —Fisheries Lake Survey — StraightFisheries Lake Survey · MN DNR LakeFinder
- —Aquatic Plant Report — Straight (1225)Aquatic Plant Report · MN DNR LakeFinder
- —Fish Stocking History — StraightFish Stocking History · MN DNR LakeFinder
- —Public Water Access Sites — StraightPublic 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: 2021-09-09
Monitoring stations: 1