Fish Iowa - Lakes, Ponds, and Reservoirs - Twelve Mile Creek Lake


About Twelve Mile Creek Lake

Surface Area (acres): 635.00
Maximum Depth (feet): 42 ft. (2007 - Data collected as part of the statewide lake mapping program.)
Motoring Restrictions: No Size Limit at No Wake
See below for additional location-specific regulations

Location

County: Union
Description: Twelve Mile
Coordinates: 41.05613667, -94.25494223

Amenities

Amenities at Twelve Mile Creek Lake include:
  • Boat Access
  • Fishing Jetty
  • Boat Rental
  • Accessible Facilities
  • Restrooms
  • Hard Surface Boat Ramp
  • Accessible Shoreline

Fishing Report

  • Ice Condition: None
  • Water Temperature (°F):
  • Ramp Condition: Useable
  • Comments: Docks are still in. Last updated on 11/24/2025
Species Reports
Yellow Perch - Slow

Fishing Summary

Spring electrofishing indicated a moderate abundance of Largemouth Bass up to 21 inches. Bluegill up to 9 inches and Crappie of all sizes are available to anglers. - Last updated on 11/13/2025.

Consumption Guidelines

Iowa-Caught Fish Are Safe to Eat, In Almost All Cases

In nearly all cases, Iowa fish are safe to eat. Cleaning and/or preparing the meal causes most of the problems regarding taste or color of fish. Like all living creatures, fish are susceptible to diseases, parasites, and other naturally occurring conditions in the water. If you suspect your fish is affected by any of these conditions, do not eat it. Consider eating smaller and younger fish which usually have lower levels of contaminants than larger ones. Most contaminants accumulate in larger, older fish. For additional information, check out our resources for eating and cooking Iowa caught fish.

To learn more about fish tissue monitoring, visit our Fish Tissue Monitoring page .

Stocking

  • 9/26 & 10/3/23 2023 - 3,192 Channel Catfish (7.8)
  • 4/28/23 - 1,905,000 Walleye (Fry)
  • 10/30/23 - 30 Walleye (8.4)
  • 10/30/23 - 30 Walleye (9.5)
  • 10/13 & 10/17/23 2023 - 5,920 Walleye (6.4)
  • October 2022 - 4,448 Walleye (8.8)
  • September 2021 - 3,202 Channel Catfish (9.3)
  • 04/27/2021 - 1,905,000 Walleye (Fry)
  • October 2020 - 14,051 Walleye (9)
  • 04/10/2020 - 980,167 Walleye (Fry)
  • October 2019 - 12,743 Walleye (9.3)
  • fall 2019 - 3,203 Channel Catfish (9.1)
  • 05/02/2019 - 1,905,000 Walleye (Fry)
  • 10/22/2018 - 3,177 Walleye (8.3)
  • 05/08/2018 - 1,905,000 Walleye (Fry)
  • 9/5/2017 - 1,252 Channel Catfish (8.3")
  • 10/25/2017 - 75 Walleye (9")
  • 10/25/2017 - 1,052 Walleye (9")
  • 10/24/2017 - 602 Walleye (9")
  • 10/24/2017 - 1,983 Walleye (9")
  • 10/23/2017 - 2,000 Walleye (9")
  • 4/26/16 - 2,000,000 Walleye (Fry)
  • 10/26/16 - 6,807 Walleye (10.3")
  • 10/20/2015 - 6,358 Walleye (8")
  • 09/17/2015 - 3,201 Channel Catfish (8")
  • 04/22/2015 - 1,905,000 Walleye (Fry)

Management

  • 2025 - Vegetation-Treatment: Control American Lotus for access.
  • 2025 - Survey-Population: A general survey was conducted using spring electrofishing.
  • 2024 - Survey-Population: A comprehensive survey was conducted using electrofishing, baited hoop nets, and fyke nets.
  • 2023 - Survey-Population: A standard survey was conducted using electrofishing and fyke nets.
  • 2022 - Survey-Population: A standard fish population survey was conducted using electrofishing and fyke nets.
  • 2022 - Vegetation-Treatment: Curly leaf pondweed was treated in April with Aquathol-K around the boat ramp and fishing jetties
  • 2021 - Survey-Population: A standard fish population survey was conducted using electrofishing and fyke nets.
  • 2021 - Vegetation-Treatment: Curly leaf pondweed was treated in mid April with Aquathol-K around the boat ramp and fishing jetties
  • 2020 - Survey-Population: A standard trend fish population survey was conducted using electrofishing and fyke nets.
  • 2019 - Survey-Population: A comprehensive fish population survey was conducted using electrofishing, baited hoop nets, and fyke nets.
  • 2018 - Structures-Trees Cedar: Cedar Trees
  • 2017 - Survey-Population: A standard trend fish population survey was conducted using electrofishing and fyke nets.
  • 2016 - Survey-Population: A standard sample was done with electrofishing and fyke netting.
  • 2015 - Structures-Trees Cedar: Cedar trees
  • 2015 - Structures-Trees Cedar: Cedar trees
  • 2015 - Survey-Population: A fishery trend survey was done with electrofishing (day and night) and fyke netting.
  • 2014 - Survey-Population: A fishery comprehensive survey was done with electrofishing, hoop netting, and fyke netting gears.
  • 2013 - Survey-Population: A fishery trend survey was done with electrofishing and fyke netting gears.
  • 2012 - Survey-Population: A fishery trend survey was done with electrofishing and fyke netting gears.
  • 2011 - Survey-Population: A standard survey was done on 12 Mile with electrofishing and trapnetting gears.
  • 2010 - Survey-Population: A standard survey was done on 12 Mile with electrofishing and trapnetting gears.
  • 2009 - Survey-Population: 12 Mile was sampled with spring electrofishing, baited hoopnets, fall trapnetting, and fall night electrofishing.

Motoring Restrictions

Motoring Restrictions: No Size Limit at No Wake

Contacts for this Location

Fishing Regulations

The summaries listed below are a partial listing provided for your benefit. Familiarize yourself with the complete Fishing Regulations here: Iowa DNR Fishing Regulations and Laws.

Aquatic Invasive Species

  • Curlyleaf Pondweed

To learn more about AIS, visit the Iowa DNR's Aquatic Invasive Species page for more information and resources.

Fish Surveys

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