Minnesota DNR fisheries surveys · latest July 22, 2019
Murphy Lake FishingAWater-quality grade A
Minnesota DNR surveys at Murphy Lake average 22.12 largemouth bass per unit of sampling effort (CPUE) across 5 surveys. The most recent is a Standard Survey dated July 22, 2019. Length samples in the latest survey that recorded them ran 7–17 inches. In St. Louis County, Minnesota, Murphy Lake carries an overall water-quality grade of A. Water clarity averages 6.4 feet of visibility, and there is one public boat landing. The survey figures on this page are Minnesota DNR's own; the water-quality grade comes from EPA Water Quality Portal samples. Neither is a forecast of today's bite.
Species recorded at Murphy Lake
10 species on the Minnesota DNR list for this lake. A species on the list has been recorded here; it does not mean it is catchable today or in every part of the lake.
Stocking at Murphy Lake
Minnesota DNR publishes a stocking history for this lake — which species went in, how many, and in which years. Read the years: a lake stocked in one year is not necessarily stocked in the next.
Getting on the water
1 public boat landing is recorded on Murphy Lake. Minnesota DNR lists the public access sites, including ramp type and parking, in the documents below.
Survey results in full
Minnesota DNR surveys at Murphy Lake average 22.12 largemouth bass per unit of sampling effort (CPUE) across 5 surveys. The most recent is a Standard Survey dated July 22, 2019. Length samples in the latest survey that recorded them ran 7–17 inches.
A DNR fisheries survey reports fish abundance and catch rates, not a water-quality grade. LakeQuality grades Murphy Lake A from EPA Water Quality Portal chemistry, and the water-quality trend over 2 years of monitoring is improving. Catch rate is not a swim clearance and is not a weekly bite report.
DNR Fisheries Survey Summary
5 surveys on file from MN DNR Fisheries. Most recent: 2019-07-22 (Standard Survey).
Top Species by Catch Rate
| Species | Avg catch rate (CPUE) | Avg Weight |
|---|---|---|
| Largemouth Bass | 22.12 | 1.66 lb |
| Yellow Perch | 15.76 | 0.11 lb |
| Bluegill | 8.40 | 0.14 lb |
| Black Crappie | 5.48 | 0.24 lb |
| Spottail Shiner | 3.75 | — |
CPUE = catch per unit effort, averaged across surveys (excludes juvenile shoreline seining). Higher CPUE means more abundant in standardized sampling. This is not a weekly bite report.
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.
Largemouth Bass
Yellow Perch
Bluegill
Black Crappie
From the 2019-07-22 survey
Murphy is a 354 acre lake with 261 (74%) acres of littoral area and maximum depth of 24 feet. Murphy Lake is located just west of Central Lakes, MN off U.S. Highway #53 and has a state-administered, concrete, back-in public access. Murphy was last assessed in 2009. Murphy was surveyed during the summer of 2019 to…
DNR Reports & Resources
Minnesota DNR LakeFinder publishes lake survey, fish stocking, water access, and aquatic plant data for Murphy Lake. 4 reports on file.
These links open on the official state DNR websites (Wisconsin DNR survey PDFs · Minnesota DNR LakeFinder).
- —Fisheries Lake Survey — MurphyFisheries Lake Survey · MN DNR LakeFinder
- —Aquatic Plant Report — Murphy (1807)Aquatic Plant Report · MN DNR LakeFinder
- —Fish Stocking History — MurphyFish Stocking History · MN DNR LakeFinder
- —Public Water Access Sites — MurphyPublic Water Access Sites · MN DNR LakeFinder
Common questions
What fish are in Murphy Lake?
Minnesota DNR surveys at Murphy Lake average 22.12 largemouth bass per unit of sampling effort (CPUE) across 5 surveys. The most recent is a Standard Survey dated July 22, 2019. Length samples in the latest survey that recorded them ran 7–17 inches. Minnesota DNR lists 10 species for the lake in total. Those are survey results, not a catch report: a net set on one date measures what was in that net.
When was Murphy Lake last surveyed?
The most recent fisheries survey on file for Murphy Lake is dated July 22, 2019. Survey intervals vary by lake and by species; a gap of several years between surveys is normal and does not mean the record is missing.
Is Murphy Lake stocked?
Minnesota DNR publishes a stocking history for Murphy Lake. It records which species were released, in what numbers and in which years — the source documents are linked further down this page. A lake can be stocked in some years and not others, so read the years rather than assuming an annual release.
Does the water-quality grade tell me how Murphy Lake fishes?
A DNR fisheries survey reports fish abundance and catch rates, not a water-quality grade. LakeQuality grades Murphy Lake A from EPA Water Quality Portal chemistry, and the water-quality trend over 2 years of monitoring is improving. Catch rate is not a swim clearance and is not a weekly bite report.
Before you eat what you catch
A water-quality grade is not a consumption advisory. Mercury and PCB advice for Minnesota waters comes from MDH, and it is issued per species and per size class — a lake can grade well and still carry a meal limit on larger predator fish.
Where to stay near Murphy Lake
Top-rated places to stay near Murphy Lake
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