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Olson Lake (Washington County)

Washington County, Minnesota - DNR stocking history, depth and survey data

Minnesota · Minnesota Department of Natural Resources (DNR) · DOW 82010300

Olson Lake (Washington County) has no DNR stocking rows in LakeFinder; this page carries its DNR depth, access and survey data.

Depth map

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Bathymetric contours from the Minnesota DNR lake survey mapped 7/16/1959 (orig map); depths in feet. Simplified for the web; not for navigation.

Public accesses

TypeOwnerWhere
CUKN - Access available from Lake Demontreville through a short channel.

DNR fish survey, 2011

SpeciesGearCatch per netTotal catchAvg lb
BluegillStandard trap nets149.671,3470.07
Hybrid sunfishStandard trap nets17.561580.15
Black crappieStandard trap nets14.441300.17
PumpkinseedStandard trap nets6.44580.16
Yellow bullheadStandard trap nets1.78160.74
Black bullheadStandard trap nets0.8981.01
Northern pikeStandard trap nets0.3332.65
Largemouth bassStandard trap nets0.3330.11
Bluegill50-ft beach seine60.673640.00
Hybrid sunfish50-ft beach seine7.50450.00
Largemouth bass50-ft beach seine6.33380.00
Spotfin shiner50-ft beach seine6.33380.00
Pumpkinseed50-ft beach seine4.17250.00
Yellow perch50-ft beach seine2.17130.00
Green sunfish50-ft beach seine0.5030.00
Iowa darter50-ft beach seine0.3320.00
Green sunfishBackpack electrofishing26.56240.00
BluegillBackpack electrofishing15.49140.00
Hybrid sunfishBackpack electrofishing14.39130.00
Largemouth bassBackpack electrofishing11.07100.00
PumpkinseedBackpack electrofishing3.3230.00
Black bullheadBackpack electrofishing1.1110.00
Johnny darterBackpack electrofishing1.1110.00
Yellow perchStandard gill nets19.00380.15
BluegillStandard gill nets8.50170.10
Northern pikeStandard gill nets8.00162.41
PumpkinseedStandard gill nets4.5090.13
Yellow bullheadStandard gill nets1.5030.78
WalleyeStandard gill nets1.0023.81
Black crappieStandard gill nets0.5010.08
Largemouth bassStandard gill nets0.5011.25
BluegillStandard electrofishing10.5910.00
Green sunfishStandard electrofishing10.5910.00
Bluegill15-ft beach seine3.40170.00
Hybrid sunfish15-ft beach seine0.4020.00
Largemouth bass15-ft beach seine0.2010.00

Catch per net (CPUE) is the DNR survey's count per gill net or trap net set; higher means more of that species were sampled, not a fishing forecast. Top species per gear shown; where we have no verified common name for a DNR code, the code itself is shown.

Bluegills remain the most abundant species in Olson Lake. Their population is considered high when compared to similar lakes. Their size structure remains small. The average length sampled was 4.78 inches. Pumpkinseed, green and hybrid sunfish were all sampled during the survey. The northern pike population was sampled at the second highest level recorded for this lake. The average size sampled was 21.9 inches and 2.41 pounds. Black crappies numbers are moderate, but the size is small. Largemouth bass were sampled in average abundance. This lake continues to be popular with bass anglers. Two walleye were sampled during the survey despite having not been stocked since 2003 in Olson Lake and 2005 in Demontreville Lake, which is connected. Yellow bullhead and black bullhead were each sampled in Olson Lake. Black bullhead were found in low numbers but yellow bullhead were found in average abundance.

Minnesota DNR survey narrative, .

All Minnesota stockings · every Minnesota lake with a page · state CSV · this lake on DNR LakeFinder

Stocking rows, depths, accesses and survey figures are Minnesota DNR LakeFinder data as of 2026-09-02; contours are the DNR bathymetric survey. Regulations, slot limits and special rules are on the DNR page linked above, not here.

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