|Nearest Town: Spicer
Primary County: Kandiyohi
Survey Date: 07/31/2012
Inventory Number: 34007900
|Township||Concrete||Northwest access. The Couleur access is located off of Township Road#144.|
|DNR||Concrete||North access. Rush Brown access is located off of CR#30.|
|Township||Concrete||South access. Bible Camp access is off of CR#10.|
|Township||Concrete||East access. Wee access is located off of CR#95.|
|DNR||Concrete||Southwest access. The Saulsbury access is located within the city of Spicer net to Saulsbury Beach (Kandiyohi County Park #4).|
|Did you know? Lake rehabilitation projects reclaim waters suffering from habitat degradation and overpopulation of some fish species.|
|Species||Number of fish per net||
Average Fish Weight (lbs)
Normal Range (lbs)
|Black Crappie||Trap net||0.86||0.3 - 1.7||0.55||0.3 - 0.6|
|Gill net||3.58||0.2 - 1.1||0.42||0.2 - 0.5|
|Bluegill||Trap net||34.00||3.7 - 42.9||0.27||0.1 - 0.2|
|Bowfin (dogfish)||Trap net||0.14||0.3 - 1.1||5.18||3.9 - 5.1|
|Brown Bullhead||Gill net||0.17||0.3 - 1.6||1.41||0.7 - 1.2|
|Common Carp||Trap net||0.21||0.2 - 1.0||8.97||3.5 - 7.4|
|Green Sunfish||Gill net||0.17||0.1 - 0.5||0.05||N/A|
|Hybrid Sunfish||Trap net||2.50||N/A||0.33||N/A|
|Largemouth Bass||Trap net||0.29||0.4 - 1.4||0.87||0.3 - 0.7|
|Gill net||3.00||0.3 - 1.2||0.60||0.6 - 1.0|
|Northern Pike||Trap net||0.29||N/A||4.42||N/A|
|Gill net||3.33||3.0 - 7.9||3.33||1.7 - 2.8|
|Pumpkinseed||Trap net||0.71||1.6 - 6.9||0.37||0.1 - 0.3|
|Rock Bass||Trap net||1.93||0.7 - 3.3||0.34||0.2 - 0.5|
|Gill net||10.58||1.0 - 6.6||0.32||0.3 - 0.5|
|Smallmouth Bass||Trap net||1.36||0.1 - 0.6||0.39||0.1 - 0.6|
|Gill net||2.08||0.2 - 0.9||0.89||0.9 - 1.8|
|Tullibee (cisco)||Gill net||0.25||0.5 - 5.2||0.94||0.4 - 1.0|
|Walleye||Trap net||1.43||0.3 - 0.9||0.66||1.0 - 2.2|
|Gill net||10.08||4.0 - 9.6||1.19||1.1 - 1.9|
|White Sucker||Trap net||0.07||0.2 - 0.8||2.76||1.4 - 2.7|
|Gill net||1.92||1.0 - 3.5||2.48||1.5 - 2.3|
|Yellow Bullhead||Trap net||0.21||0.9 - 4.8||1.25||0.7 - 1.0|
|Gill net||2.42||0.6 - 6.4||1.14||0.6 - 0.9|
|Yellow Perch||Gill net||0.58||7.1 - 33.9||0.08||0.1 - 0.2|
|Species||Number of fish caught in each category (inches)|
|For the record, the largest Tullibee taken in Minnesota weighed 5 lbs., 11.8 oz. and was caught: |
Statistics: 20.45" length, 16.4" girth
Fish Stocked by Species for the Last Ten Years
|Privately Stocked Fish|
|* indicates privately stocked fish. Private stocking includes fish purchased by the DNR for stocking and fish purchased and stocked by private citizens and sporting groups.|
|Stocking Fish Sizes|
|Fry - Newly hatched fish that are ready to be stocked usually called "swim-ups". Walleye fry are 1/3 of an inch or around 8 mm.|
|Fingerling - Fingerlings are one to six months old and can range from a size of one to twelve inches depending on the species. Walleye fingerlings range from three to eight inches each fall.|
|Yearling - Yearling fish are at least one year old. A one-year-old fish can range from three to twenty inches depending on the species. Walleye yearlings average from six to twelve inches.|
|Adult - Adult fish are fish that have reached maturity. Depending on the species, maturity can be reached at two years of age. Walleye reach maturity between the ages of four and six years.|
These fish consumption guidelines help people make choices about which fish to eat and how often. Following the guidelin es enables people to reduce their exposure to contaminants while still enjoying the many benefits from fish.
Pregnant Women, Women who may become pregnant and Children under age 15
|Unrestricted||1 meal/week||1 meal/month||Do not eat|
Kandiyohi Co., 34007900
|Bluegill Sunfish||All sizes||Mercury|
|Northern Pike||shorter than 17"||17" or longer||Mercury|
|Rock Bass||All sizes||Mercury|
|White Sucker||All sizes||Mercury|
|Unrestricted||1 meal/week||1 meal/month||Do not eat|
Kandiyohi Co., 34007900
|Bluegill Sunfish||All sizes|
|Northern Pike||shorter than 28"||28" or longer||Mercury|
|Rock Bass||All sizes||Mercury|
|White Sucker||All sizes|
DOWID - MN DNR, Divion of Waters' lake ID number.
Contaminants listed were measured at levels that trigger advice to limit consumption.
Listing of consumption guidelines do not imply the fish are legal to keep, MN DNR fishing regulations should be consulted.
A population assessment of Green Lake was conducted during late July and early August of 2012. Green is a large (5,406 acres), deep (110 feet maximum), and moderately productive lake located in Kandiyohi County. Green is a popular fishery for walleye, northern pike, smallmouth bass, and bluegill. Water levels were high to normal during the 2012 spring but 1-2 feet below normal by late summer due to drought conditions. Water clarity was moderate (10.5 feet) for Green Lake on July 30, 2012. Climate change effects have been noticeable for both habitat and species density changes in Green Lake during recent decades. Periphyton (algae, diatoms) and dead plant material now cover the boulder/rubble substrates generally all year long with exception of some narrow (<1 foot deep) windswept near shore areas. This has favored warm water species (black crappie, bass, bluegill, rock bass) which are nest spawners that guard and fan the eggs, unlike broadcast spawners such walleye and tullibee. In addition, increased densities of submergent vegetation such as invasive Eurasian watermilfoil have provided added habitat/cover for warm water fish species. The 2012 summer weather was dry and hot with many days of high temperatures above 90 F during several weeks of July. Narrow bands (1-3 feet) of marginal temperatures (<23.5 C) and dissolved oxygen levels (1-3 ppm) for tullibee were present at depths of 25-30 feet in Green during late July and early August of 2012. Dissolved oxygen levels and temperatures in Green were at potential summerkill levels of 2 ppm and 23.5 C for tullibee on both July 30th and August 9th of 2012. No summerkill events were reported or observed in Green or nearby Lake Koronis in 2012.
A few local residents reported a minor summerkill of dead tullibee near shore areas of Green during 2011. We observed only a few dead tullibee during the 2011 population assessment. A major summerkill of tullibee occurred during the same time period on nearby Lake Koronis in 2011 with pelicans feeding greatly on the dead fish. Green has been the only lake in the Spicer Area open to the public for fall gillnetting of tullibee during late November or early December each year since the late 1980's. Green Lake was not opened for tullibee gillnetting in 2012 due to the low numbers sampled in 2012 and recent years. Tullibee are an important forage fish for trophy northern pike in Green.
The threats of present (Eurasian watermilfoil, curly-leaf pondweed) and potential exotic invasive species introductions (i.e. zebra mussels, quagga mussels, spiny water flea, faucet snail, etc.) are of a major concern to local residents in Kandiyohi County. Eurasian watermilfoil "EWM" was first documented in Green Lake at several isolated sites during 2000. Both DNR and private attempts to chemically eradicate EWM permanently have been unsuccessful. Eurasian watermilfoil has spread throughout the lake in scattered stands especially near the Spicer public access, swimming beach, city dock, Indian Beach Lagoon, storm water inlet areas and off shore "break" (10-15 feet deep) areas since 2000.
EWM and curly-leaf pondweed tend to thrive in disturbed areas (i.e. previously chemically or mechanically treated areas, storm water inlets) or during years of minimal snowfall and maximum light penetration when competition from native species is minimal. Many large stands of EWM on Green Lake have been located near storm water inlets. Watershed projects that may reduce sediment and nutrient inputs from storm water inlets will also be important for controlling EWM in these patchy areas. Widespread-extensive matting of EWM on the surface is unlikely to occur throughout Green Lake unlike some milfoil infested lakes with protected bay areas (i.e. Minnetonka) due to frequent windswept conditions, the presence of relatively low nitrogen (ammonium) nutrient levels and unsuitable dominant substrates (boulder, rubble, gravel) present in the majority of shoal water areas of Green Lake. DNR Aquatic invasive species interns will continue to randomly monitor boats entering and leaving the many access sites in an attempt to educate and prevent the spread of exotics into Kandiyohi County Lakes.
Bluegill numbers were moderate in 2012 (34.00/trapnet) and within the normal ranges for similar lakes and Green. The Green Lake bluegill historical average catch rate is 47.26 fish/trapnet. The 2012 bluegill average size was large (0.27 pounds and 6.82 inches) from trapnets. The bluegill historical average weight is 0.13 pounds from trapnets. The 2012 catch rate of quality size (6.00 inches) and larger bluegill (32.58 fish/trapnet) was above the historical average (13.50 fish/trapnet). The 2012 catch rate of preferred size (8.00 inches) and larger bluegill (5.33 fish/trapnet) was also high compared to the historical average (0.58 fish/trapnet).
Black crappie numbers were abundant in 2012 gillnets (3.58 fish/gillnet) compared to the normal ranges for Green Lake and similar lakes. Black crappie abundance in the 2012 trapnets (0.86 fish/trapnet) was near the upper normal range for Green Lake. The Green Lake black crappie historical average catch rates are 1.08 fish/gillnet and 0.70 fish/trapnet. The 2012 black crappie average sizes were moderate from gillnets (0.42 pounds and 8.22 inches, but larger from trapnets (0.55 pounds and 9.75 inches). The black crappie historical average lengths are 7.85 inches for gillnets and 7.76 inches for trapnets in Green. The 2012 catch rate of quality size (8.00 inches) and larger black crappie (0.83 fish/trapnet) was above the historical average (0.36 fish/trapnet).
Northern pike numbers were abundant in 2012 (3.33 fish/gillnet) compared to the normal range for Green Lake, but near the low end of the normal range for similar lakes. The Green Lake northern pike historical average catch rate is 2.74 fish/gillnet. The 2012 northern pike average size was moderate (3.33 pounds and 24.13 inches) from gillnets. The northern pike historical average weight and length are 3.14 pounds and 23.31 inches from gillnets. The 2012 catch rate of preferred size (28.00 inches) and larger northern pike (0.58 fish/gillnet) was slightly above the historical average (0.43 fish/gillnet). Northern pike captured in 2003-2005, 2007, 2009 and 2012 assessments were notably lean in appearance compared to fish captured in the assessments prior to 2003. The 2012 northern pike condition factor (0.602) was below the Green Lake normal range (0.604-0.634). Low numbers of forage fish (yellow perch and tullibee) were documented in Green Lake assessments from 2003-2012. Northern pike growth rates were generally below the Green Lake normal ranges for ages 1-7. However, growth rates were within the Spicer Area normal ranges for ages 1-7. The 2009 year class comprised 52% of the 2012 northern pike gillnet and trapnet catch.
Smallmouth bass numbers were moderate in 2012 (2.08 fish/gillnet) compared to the normal range for Green, but above the normal range for similar lakes. The smallmouth bass historical average catch rate is 1.94 fish/gillnet for Green Lake. The 2012 smallmouth bass average size was small (0.89 pounds and 11.09 inches) from gillnets. The smallmouth bass historical average weight and length are 1.55 pounds and 13.39 inches from gillnets for Green Lake. The 2012 catch rate of preferred size (14.00 inches) and larger smallmouth bass (0.50 fish/gillnet) was below the historical average (1.19 fish/gillnet). The 2012 smallmouth bass condition factor (1.309 Fulton K-Factor) was below normal range (1.401-1.536) for Green. Smallmouth bass condition factors have been near or below the Green normal ranges since 2000 except for 2004 and 2011. Smallmouth bass growth rates were generally below both the Green Lake and Spicer Area normal ranges for ages 1-4, within the normal ranges for ages 5-6 and above the normal ranges for age 7. Three smallmouth bass year classes (2011, 2009 and 2008) each comprised approximately 30% of the 2012 smallmouth bass gillnet catch.
Crayfish, an important smallmouth bass forage species, were not captured in 2007-2009 and 2012. Low numbers of crayfish were captured in 2011 (1.1 crayfish/gillnet), 2010 (0.3 crayfish/gillnet), 2006 (0.1 crayfish/gillnet) and 2005 (0.2 crayfish/gillnet). No crayfish were caught in the 2002-2004 gillnets. The crayfish historical average catch rate is 7.1 crayfish/gillnet for Green.
Tullibee "cisco" abundance in the 2012 summer (0.25 fish/gillnet) was below the normal ranges for Green Lake and similar lakes. The tullibee historical average summer catch rate is 2.31 fish/gillnet for Green Lake. A majority of the tullibee were captured in summer gillnet stations located along the east and south portions of the lake at depths between 25-30 feet. The 2012 summer tullibee average size was moderate to large (0.94 pounds and 12.83 inches) from gillnets. The tullibee historical summer average weight is 0.60 pounds from gillnets. All tullibee captured in the 2012 summer gillnets were from the 2009 year class.
There were low numbers of tullibee (8.33 fish/gillnet) captured in the 2012 fall special assessment. The 2012 fall tullibee average size was moderate to large (1.06 pounds and 13.61 inches) for Green. Tullibee growth rates were within or above the Green Lake normal ranges for ages 1 7. The 2008 year class comprised 76% of the 2012 fall tullibee catch in Green Lake. There were no tullibee from 2009-2011 year classes present in the 2012 fall catch. Low numbers of tullibee were captured in nearby Lake Koronis (5.33 fish/gillnet, 14.91 inches average length) in the 2012 fall. The fall tullibee historical average catch rate and average length are 76.5 fish/gillnet and 12.52 inches for Green Lake.
The lack of adult tullibee on the spawning grounds from early November to early December of 2010-2012 as sampled by both DNR and private netters during the open season is not a good indication for the long term sustainability of the tullibee population in Green Lake. Hopefully, cool summers will occur during the next several years, which may result in good hatches and survival of tullibee in Green Lake if adequate brood stock numbers are still present.
Yellow perch numbers were low in 2012 (0.58 fish/gillnet) compared to the normal ranges for Green Lake and similar lakes. The yellow perch historical average catch rate is 14.38 fish/gillnet for Green Lake. The 2012 yellow perch average size was small (0.08 pounds and 6.25 inches) from gillnets. The yellow perch historical average weight is 0.12 pounds from gillnets. The 2012 catch rate of quality size (8.00 inches) and larger yellow perch was 0.00 fish/gillnet. The 2012 yellow perch condition factor (0.858 Fulton K-Factor) was below the normal range (1.081-1.246) for Green. Yellow perch condition factors have been near or below the Green normal ranges since 2003 except for 2004 and 2011.
Walleye numbers were moderately abundant in 2012 (10.08 fish/gillnet) compared to the normal ranges for Green Lake and similar lakes. The walleye historical average catch rate is 9.19 fish/gillnet for Green Lake. The 2012 walleye average size was moderate (1.19 pounds and 14.18 inches) from gillnets. The walleye historical average weight and length are 1.26 pounds and 14.64 inches from gillnets. The 2012 catch rate of quality size (15.00 inches) and larger walleye (3.42 fish/gillnet) was near the historical average (3.86 fish/gillnet) for Green Lake. The 2012 catch rate of preferred size (20.00 inches) and larger walleye (1.17 fish/gillnet) was slightly above the historical average (0.76 fish/gillnet). The 2012 walleye condition factor (0.857 Fulton K-Factor) was below the normal range (0.873-0.907) for Green. Walleye growth rates were generally below both the Spicer Area and Green Lake normal ranges for ages 1-5, but within the normal ranges for ages 6-8. Recent walleye year classes have been due mostly to stocking since 2001. The 2010 and 2009 walleye year classes comprised about 29% and 20% respectively of the 2012 walleye gillnet and trapnet catch. The 2011 and 2008 year classes each comprised 16% of the 2012 walleye gillnet and trapnet catch. OTC marked walleye (fry stocked) accounted for 88% of the 2011, 9% of the 2010, and 33% of the 2009 year classes captured in the 2012 gillnets.
Green Lake has been stocked annually with walleye fry (1-4 million) from 2000-2012 except for 2002. OTC marked walleye fry (1-2 million) were stocked in Green each year during 2000-2001 and 2007-2012. The walleye fry were stocked in part as a 10% return of walleye eggs taken for the statewide propagation program. Marked OTC walleye fingerlings (30,787 fish) accounted for 60% of the fingerlings stocked (51,641 fish) in Green during the 2008 fall. Walleye unmarked fingerlings (59,672 fish, 3,081 pounds) and OTC marked fry (1,827,749 fish) were last stocked into Green during 2012. Various combinations of walleye fingerlings, yearlings, or adults have been stocked annually (2,000-4,000 pounds/year) since 2000 into Green Lake. During the 1990's, walleye fry were stocked in 1996 and larger walleye (fingerlings and adults) were stocked in 1994, 1992 and 1990.
A fall electrofishing assessment of Green Lake was conducted on October 3, 2012. The 2012 fall electrofishing assessment was conducted to evaluate walleye natural reproduction and a 2012 walleye fry stocking in Green Lake. Low numbers of young of year "YOY" walleye were captured in 2012 fall electrofishing survey (12.00 YOY/hour, 6.87 inches average length). OTC marked fish (2012 fry stocked year class) comprised 55% of the 2012 YOY walleye catch in the 2012 walleye fall electrofishing survey. Moderate numbers of YOY walleye were captured in the previous 2011 fall electrofishing survey (31.00 YOY/hour, 6.46 inches average length). OTC marked YOY walleye (fry stocked) comprised 63.3% (19.62 YOY/hour) of the 2011 fall survey catch. The Spicer Area YOY walleye historical average catch rate is 81.31 YOY/hour. The Green Lake fall electrofishing historical average YOY walleye catch rate and length are 14.33 YOY/hour and 6.75 inches. The highest fall electrofishing catch rate of YOY walleye for Green occurred in 1994 (54.00 YOY/hour, 6.15 inches average size). Yearling walleye numbers (10.91 fish/hour, 9.79 inches) in the 2012 fall survey were comparable to the Green historical average (11.83 fish/hour, 9.64 inches average size). OTC Marked fish (2011 fry stocked year class) comprised approximately 80% of the yearling walleye captured in the 2012 fall electrofishing survey.
Rock bass numbers were abundant in 2012 (10.58 fish/gillnet) compared to the normal ranges for Green and similar lakes. The rock bass historical average catch rate is 7.93 fish/gillnet for Green Lake. The 2012 rock bass average size was small (0.32 pounds and 6.97 inches) from gillnets. The rock bass historical average weight is 0.41 pounds from gillnets.
Largemouth bass numbers were abundant in 2012 (3.00 fish/gillnet) compared to the normal ranges for Green and similar lakes. The largemouth bass historical average catch rate is 0.73 fish/gillnet for Green. The 2012 largemouth bass average size was small (0.60 pounds and 9.15 inches) from gillnets. The largemouth bass historical average weight is 0.68 pounds from gillnets. Growth rates were generally below both the Green Lake and Spicer Area normal ranges for ages 2-5. The 2011 and 2008 largemouth year classes comprised 42% and 25% respectively of the 2012 largemouth bass gillnet and trapnet catch.
An Index of Biotic Integrity "IBI" survey was conducted from July 20-23, 2012 on Green Lake to compare small fish species presence versus lake characteristics (i.e. water quality, size, depth, productivity, etc.). Seine hauls were conducted with a bag seine of 50 foot width and 1/8 inch bar mesh in depths of 3.5 feet or less. Near shore electrofishing was conducted with a back-pack unit in water depths less than 2 feet deep. There are 20 stations that were spaced equally apart around the entire shoreline of the lake in a variety of near shore habitats and each station was approximately 100 feet long, but only 19 stations were sampled with both seining and electrofishing gears due to water levels, emergent vegetation, or unsuitable substrates for walking. Approximately 22 different fish species (19 species from electrofishing, 19 species from seining) were captured from electrofishing and seining combined. Fish species captured included gamefish (i.e. smallmouth bass and largemouth bass), panfish (bluegill, yellow perch, rock bass, pumpkinseed sunfish, green sunfish, and hybrid sunfish), large non-gamefish (yellow bullhead) and small non-gamefish (Iowa darter, johnny darter, banded killifish, longnose dace, tadpole madtom, pugnose shiner, golden shiner, spottail shiner, blackchin shiner, bluntnose minnow, brook silverside, brook stickleback and logperch). Young of year species captured included largemouth and smallmouth bass in seine hauls. Green Lake has greater numbers of fish species present than most other Spicer Area lakes.
Current fish management activities on Green Lake include monitoring the fish population on an annual basis, assisting aquatic plant management and enforcement personnel with invasive species monitoring and education, protecting aquatic vegetation through the permit process, participating in local watershed initiatives to maintain or improve water quality, and stocking walleye to meet long-range goals. The Green Lake fishery will be sampled in the 2013 fall for walleye natural reproduction, and 2013 summer for all fish species by assessment nets.
|For more information on this lake, contact:||Lake maps can be obtained from:|
For general DNR Information, contact:
DNR Information Center
500 Lafayette Road
St. Paul, MN 55155-4040
TDD: (651) 296-6157 or (888) MINNDNR
Turn in Poachers (TIP):
Toll-free: (800) 652-9093