Jeffrey Energy Center Aux. Lake Fishing Report -
Species Rating Size Baits, Method, and Location
Black Bass   1 to 4 lbs

The 2018 sample documented that smallmouth bass numbers are down, but the size of fish is up with 58.8% of the fish seen this spring were over 14 inches.  The lake is well known for the excellent smallmouth fishing along most of the rocky shoreline.  

The lake has a low level largemouth bass population dominated by smaller fish.  The population is improving with the 2018 sample collecting the most fish in 15 years.  The East bank and around the island are usually the best largemouth spots.

White Bass   Up to 3 lbs White bass fishing should be great in 2019 as the population is well above average for abundance with 59.2% of the fish sampled last fall being over 12 inches and 16.9% were over 15 inches.  
Wiper   Up to 12 lbs There are fairly good numbers of wiper in the lake with most of the fish sampled last fall being over 20 inches.
Walleye   Up to 5 lbs The walleye population is finally recovering due to good survival of stocked fish the last two years.  There should be good harvest in 2019 with most of the population right around the legal length.  Walleye regulations are 2 a day and a 15-inch minimum length limit. 
Crappie   Up to 1.5 lbs Crappie numbers have been improving the last three years and the population is offering decent numbers of fish over 10 inches.  There are some habitat cubes along the dock.
General Comments

Attention:  Auxiliary Lake is closed to fishing during the waterfowl hunting season and will be open to fishing again in March (Make-Up Lake is still open to fishing during the winter months).  Anglers need to check into the Jeffrey Energy Center Guard House located north of St. Mary's, then west off K-63 Hwy.  You can call the Guard House to check on availability at (785) 456-6149.  The Jeffrey Energy Center allows 30 anglers to fish at any one time. 

Auxiliary Lake has zebra mussels which makes the lake designated as a Aquatic Nuisance Species water. Fish may not be transported alive from ANS designated waters. To help prevent the spread of invasive species, please CLEAN, DRAIN & DRY all equipment when changing water bodies and dump your bait.