Minnesota DNR fisheries surveys · latest September 7, 1994
Courthouse Lake FishingAWater-quality grade A
Minnesota DNR surveys at Courthouse Lake average 4.50 northern pike per unit of sampling effort (CPUE) across 4 surveys. The most recent is a Standard Survey dated September 7, 1994. Length samples in the latest survey that recorded them ran 13–31 inches. In Carver County, Minnesota, Courthouse Lake carries an overall water-quality grade of A. Water clarity averages 18.9 feet of visibility. 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 Courthouse 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 Courthouse 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.
Survey results in full
Minnesota DNR surveys at Courthouse Lake average 4.50 northern pike per unit of sampling effort (CPUE) across 4 surveys. The most recent is a Standard Survey dated September 7, 1994. Length samples in the latest survey that recorded them ran 13–31 inches.
A DNR fisheries survey reports fish abundance and catch rates, not a water-quality grade. LakeQuality grades Courthouse Lake A from EPA Water Quality Portal chemistry, and the water-quality trend over 6 years of monitoring is declining. Catch rate is not a swim clearance and is not a weekly bite report.
DNR Fisheries Survey Summary
4 surveys on file from MN DNR Fisheries. Most recent: 1994-09-07 (Standard Survey).
Top Species by Catch Rate
| Species | Avg catch rate (CPUE) | Avg Weight |
|---|---|---|
| Black Bullhead | 8.02 | 0.24 lb |
| Green Sunfish | 4.77 | 0.08 lb |
| Northern Pike | 4.50 | 1.35 lb |
| White Crappie | 2.96 | 0.17 lb |
| Black Crappie | 2.28 | 0.29 lb |
| Yellow Bass | 1.63 | 0.39 lb |
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.
Black Bullhead
Northern Pike
White Crappie
Black Crappie
From the 1994-09-07 survey
The Courthouse Lake fish population has changed significantly in recent years due to flooding. The 1993 flood allowed many species found in the Minnesota River to migrate into the lake, including northern pike. Since Courthouse is a designated trout lake, northern pike are not a desirable species to have present.…
DNR Reports & Resources
Minnesota DNR LakeFinder publishes lake survey, fish stocking, water access, and aquatic plant data for Courthouse Lake. 2 reports on file.
These links open on the official state DNR websites (Wisconsin DNR survey PDFs · Minnesota DNR LakeFinder).
- —Fisheries Lake Survey — CourthouseFisheries Lake Survey · MN DNR LakeFinder
- —Fish Stocking History — CourthouseFish Stocking History · MN DNR LakeFinder
Common questions
What fish are in Courthouse Lake?
Minnesota DNR surveys at Courthouse Lake average 4.50 northern pike per unit of sampling effort (CPUE) across 4 surveys. The most recent is a Standard Survey dated September 7, 1994. Length samples in the latest survey that recorded them ran 13–31 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 Courthouse Lake last surveyed?
The most recent fisheries survey on file for Courthouse Lake is dated September 7, 1994. 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 Courthouse Lake stocked?
Minnesota DNR publishes a stocking history for Courthouse 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 Courthouse Lake fishes?
A DNR fisheries survey reports fish abundance and catch rates, not a water-quality grade. LakeQuality grades Courthouse Lake A from EPA Water Quality Portal chemistry, and the water-quality trend over 6 years of monitoring is declining. 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.
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Top-rated places to stay near Courthouse Lake
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