Fish Iowa - Lakes, Ponds, and Reservoirs - Thayer Lake


About Thayer Lake

Surface Area (acres): 11.00
Maximum Depth (feet): 13 ft. (2014)
Motoring Restrictions: Electric Motors Only
See below for additional location-specific regulations

Location

County: Union
Description: Thayer
Coordinates: 41.02131005, -94.06585088

Nearby Parks

- No results found

Amenities

Amenities at Thayer Lake include:
  • Boat Access
  • Picnic Area
  • Restrooms
  • Camping
  • Good/Excellent Shorefishing
  • Hard Surface Boat Ramp

Fishing Report

- No recent updates found

Fishing Forecast

Spring electrofishing indicated good numbers of largemouth bass up to 17 inches. Moderate numbers of crappie were sampled in 2021 with most crappie in the 8-10 inch length range, but some larger crappie are available to anglers. Bluegill were also sampled in moderate abundance. Most bluegill were less than 8 inches in length, but some larger bluegill are available to anglers.(2021)

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

  • 09/09/2021 - 60 Channel Catfish (8.1)
  • 09/17/2019 - 60 Channel Catfish (8.6)
  • 9/27/2017 - 59 Channel Catfish (9.3")
  • 09/15/2015 - 110 Channel Catfish (8")

Management

  • 2022 - Vegetation-Treatment: Curly leaf pondweed was treated with Aquathol-K in May (purchased by Union CCB)
  • 2021 - Survey-Population: A standard fish population survey was conducted using electrofishing and fyke nets.
  • 2021 - Vegetation-Treatment: Curly leaf pondweed was treated with Aquathol-K in late March
  • 2017 - Survey-Population: A comprehensive fish population survey was conducted using electrofishing, baited hoop nets, and fyke nets.
  • 2015 - Survey-Population: A trend survey was done using electrofishing and fyke netting.
  • 2015 - Structures-Trees Cedar: Cedar Trees.
  • 2015 - Structures-Trees Cedar: Cedar Trees.
  • 2015 - Structures-Trees Cedar: Cedar Trees.
  • 2013 - Survey-Population: A trend survey was done using electrofishing and fyke netting gears.
  • 2011 - Survey-Population: Thayer Lake was spring electrofished, summer baited hoop netted, and fall trapnetted.
  • 2009 - Survey-Population: Thayer Lake was spring electrofished and fall trapnetted.

Motoring Restrictions

Motoring Restrictions: Electric Motors Only

Contacts for this Location

Fishing Regulations

  • Black Crappie
    • Season: Continuous
    • Daily Bag Limit: combined black and white crappie, 25 fish
    • Possession Limit: unlimited
    • Length Limit: none
    • Other: No daily limit on private waters
  • Channel Catfish
    • Season: Continuous
    • Daily Bag Limit: combined: channel, blue and flathead catfish, 8 fish
    • Possession Limit: combined: channel, blue and flathead catfish, 30 fish
    • Length Limit: none
    • Other:
  • Largemouth Bass
    • Season: Continuous
    • Daily Bag Limit: combined black bass, 3 fish
    • Possession Limit: combined black bass, 6 fish
    • Length Limit: 15-inch minimum
    • Other:

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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