Murray County Lake Quality
Minnesota, 2 lakes, average grade D (Poor)
Murray County has 2 graded lakes — a thin enough sample that one or two stressed lakes can move the county average noticeably. Use the per-lake pages below for what actually matters. The county-wide average grade is D — water quality issues are persistent across most of the monitored basins. 1 lakes fall into the F bracket outright.
Most of the county's monitored lakes are shallow — under 50 feet — which means wind keeps the water column mixed all summer and sediment-bound phosphorus releases back into the surface layer whenever the bottom is disturbed. Sarah Lake (D) is the cleanest in the county.
Quick Answers for Murray County
Planning a trip? Check special fishing regulations for Sarah Lake, whether the fish are safe to eat, and the best times to fish — or browse the full Minnesota regulations index.
DNR Reports (3)
Minnesota DNR LakeFinder resources for lakes in Murray County. browse all reports →
- —Fisheries Lake Survey — SarahFisheries Lake Survey · MN DNR LakeFinder
- —Fish Stocking History — SarahFish Stocking History · MN DNR LakeFinder
- —Public Water Access Sites — SarahPublic Water Access Sites · MN DNR LakeFinder
All Lakes in Murray County
| Rank | Lake | Grade | Clarity | Max Depth | Phosphorus |
|---|---|---|---|---|---|
| 1 | Sarah Lake | D | 3.4 ft | 10 ft | - |
| 2 | Current Lake Marsh | F | 1.3 ft | - | - |
Source: EPA National Aquatic Resource Surveys, 2026.