Recent Lake Survey Summaries

Here are preliminary summaries of recent sampling not yet posted on LakeFinder, or survey types not found there. Different gear target fish species and sizes quite differently; for example, northern pike and walleye are better caught by gill nets, while bluegill are better caught with trap nets. Values of black crappie might be from either net type. Spring ("ice-out") sampling targets northern pike, walleye, or muskellunge. Our net-based surveys under-sample largemouth bass; electrofishing better evaluates bass abundances and size structures, but requires extra sampling with different equipment.

Go To Other Surveys From 2007-2014

Preliminary Survey Results 2016

Lake (County) Date Species Number/net Avg. length (in) Max. length (in)
Rebecca
(Hennepin)
Northern
Pike
0.1 n/a 22.0
6/6/16 [trapnet-only] Black Crappie 7.2 4.4 8.3
Bluegill 27 5.4 7.6
Reitz
(Carver)
Northern
Pike
8.0 23.4 30.7
6/20/16 Black Crappie 31 7.2 11.0
Bluegill 4.4 5.4 7.6
Minnetonka-- Lower Lk
  (Hennepin) 6/15/16
Northern
Pike
15 20.0 32.3
Walleye 2.8 17.5 24.0
Black
Crappie
3.0 7.2 10.4
Bluegill 64 5.4 7.7
Minnetonka-- Upper Lk
(Hennepin) 6/13/16
Northern Pike 15 22.4 34.0
Walleye 2.9 19.8 27.8
Black
Crappie
4 6.7 8.9
Bluegill 57 5.9 8.2
Minnetonka-- N & W Bays
(Hennepin) 6/14/16
Northern Pike 5.7 25.9 34.6
Walleye 3.8 17.4 23.7
Black
Crappie
19 6.6 10.1
Bluegill 101 6.4 8.3
Eagle
(Hennepin)
Northern
Pike
12 22.8 33.0
7/5/16 Walleye 4.0 16.0 24.8
Black
Crappie
14 7.2 8.7
Bluegill 27 5.9 7.8
Independence
(Hennepin)
Northern
Pike
5.0 28.4 35.8
7/20/16 Walleye 5.4 17.5 25.9
Black Crappie 36 6.5 9.3
Bluegill 50 5.5 8.7
Minnewashta
(Carver)
Northern
Pike
12 22.8 31.7
7/13/16 Black Crappie 15 7.0 12.4
Bluegill 37 5.5 7.9
Whaletail
(Hennepin)
Northern
Pike
7.3 22.5 35.6
8/1/16 Black Crappie 14 5.7 12.9
Bluegill 17 6.2 7.9
Wasserman
(Carver)
Northern
Pike
6.3 24.6 36.2
8/1/16 Black Crappie 32 6.4 10.2
Bluegill 74 6.0 8.7

Table Updated August 11, 2016

Survey Summary Notes (August 12, 2016)

1) Lakes With Better Gamefish Size Structures @ Time of Summer 2016 Sampling
Northern Pike-- 10% or more 30+ inches: Wasserman, Independence, Minnetonka Upper Lake Basins, Minnetonka North & West Basins. (also Whaletail and Eagle- Hennepin Co., with 8-9%)
Black Crappie-- 10% or more 9+ inches: Minnetonka Lower Lake Basins (also Reitz, with 8%)
Bluegill-- 10% or more 7+ inches: Wasserman, Whaletail, Eagle- Hennepin Co., Minnetonka Upper Lake Basins, Minnetonka North & West Basins, Independence, Reitz
2) Golden shiner sampled at Wasserman, Whaletail, Minnetonka (all basins), and Independence
3) Above-average numbers of burbot (dogfish) sampled from Wasserman; largest 29 inches
4) Smallmouth bass and rock bass sampled in Lake Minnetonka
5) Freshwater drum (sheepshead) still present in Reitz Lake
6) Trapnet-only sampling for Lake Rebecca, to better protect broodstock muskellunge present. During 2016 spring spawning operation, 42 muskellunge were caught (largest 47.6 inches)

Bass Electrofishing 2016

For a portion of our surveyed lakes we sampled using electrofishing--  running electricity through the water with a specialized boat at night-- to target-sample largemouth bass; preliminary summary results in table below.

Lake (County) / Date Species Number per hour Average length (in) / % over 15 inches Max length (in)
Reitz (Carver)
  5/12/16
LMB 32 11.4   /   26% 20.1
Eagle (Hennepin)
  5/16/16
LMB 31 11.4   /   18% 18.9
Rebecca (Hennepin)
  5/18/16
LMB 94 8.9   /   2% 18.7
Independence (Hennepin)
  5/17/16
LMB 62 8.6   /   2% 16.1
Wasserman (Carver)
  5/19/16
LMB 62 11.6   /   27% 20.5
Minnewashta (Carver)
  5/24/16
LMB 84 10.5   /   14% 20.1
Minnetonka (Hennepin)
  5/3016
LMB 76 9.9   /   8% 18.4

 

Spring Sampling 2016

Soon after ice-out, we checked Lake Independence to see size composition of muskellunge (muskie) and larger adult walleye using oversized trap nets. Results are from 38 net lifts at 10 locations.

Lake
(County)
Date
Fish Species Number Average Length (in) Length Range (in)
Independence Muskellunge 10 44.4 36.3 - 51.7
(Hennepin) Walleye 218 18.8 10.6 - 28.5
3 / 21-25 / 16

Note:  muskellunge sizes-- two under 40 inches, three 40-44.9 inches, four 45-49.9 inches, one over 50 inches

 

Preliminary Survey Results 2015

(Updated September 2, 2015; all field sampling completed)  Below, listed alphabetically, are preliminary summaries from 2015 lake surveys.  New for 2015-- most special-sampling results, particularly bass-electrofishing tallies, are included.

Cedar Lake (Scott Co.) pdf

Lotus Lake (Carver Co.) pdf

McMahon [Carls] Lake (Scott Co.) pdf

Mitchell Lake (Hennepin Co.) pdf

Parley Lake (Carver Co.) pdf

Lower Prior Lake (Scott Co.) pdf

Upper Prior Lake (Scott Co.) pdf

Lake Riley (Hennepin Co.) pdf

Round Lake (Hennepin Co.) pdf

Spring Lake (Scott Co.) pdf

Staring [Starring] Lake (Hennepin Co.) pdf

Lake Zumbra (Carver Co.) pdf

Spring Sampling 2015

Soon after ice-out, we checked Lower Prior Lake to see size and age composition of larger adult walleye and northern pike. We also measured any largemouth bass captured. Results are from 40 total net locations.

Lake
(County)
Date
Fish Species Number Average Length (in) Max. Length (in)
Lower Prior Walleye 165 18.3 26.6
(Scott) Northern Pike 8 26.7 33.3
4/6-10/15 Largemouth Bass 1 n / a 16.9

Notes:  walleye-- 30% 14-16.9 inches, 37% 17-19.9 inches, 33% 20 inches or larger;  northern pike-- 3 of 8 fish 24-29.9 inches, 2 of 8 fish 30 inches or larger (both in 33-inch size group)

 

2014 Other Surveys / Fish Sampling

2013 Other Surveys / Fish Sampling

2012 Other Surveys / Fish Sampling

2011 Other Surveys / Fish Sampling

2010 (only Cedar Lake [Scott Co.] Special Assessment)

2009 Other Surveys / Fish Sampling

2008 Other Surveys / Fish Sampling

2007 Other Surveys / Fish Sampling

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