Thayer Lake

General Information

County: Union
Location: 1 mile south of Thayer
Acres: 11.00
Maximum Depth: 13 ft. (2014)
Motoring Restrictions: Electric Motors Only

Nearby Parks


Amenities at Thayer Lake include:
  • Boat Access
  • Picnic Area
  • Restrooms
  • Camping
  • Good/Excellent Shorefishing
  • Hard Surface Boat Ramp
No recent updates
Download Printable Lake Map
Download Printable Fishing Structures Map

You can zoom in on the map for bathymetric information for some lakes

  • 9/27/2017 - 59 Channel Catfish (9.3")
  • 09/15/2015 - 110 Channel Catfish (8")
  • 09/19/2013 - 60 Channel Catfish (8.5")
  • 09/07/2011 - 92 Channel Catfish (8.3")
  • 09/09/2009 - 204 Channel Catfish (7.3")
  • 06/24/2008 - 600 Largemouth Bass (1.3")
The Fishing Regulations brochure is available for download. The summaries listed below are a partial listing provided for your benefit.

  • 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:
Good numbers of bluegills and crappies were sampled in 2017. Most of the bluegills were in the 8-9 inch length range and most of the crappies were in the 8-10 inch length range. Good numbers of largemouth bass were also sampled. Most the largemouth bass were 14-16 inches in length, but some larger bass are available to anglers.(2017)


Fish Surveys

Lake Fish Survey Data Data from the most recent fisheries survey of this lake is provided on this external web site. This data may include information from various netting surveys and/or electroshocking surveys. Data includes numbers of fish sampled, and fish size ranges. Not all lakes are sampled every year.

Lake Mini-report

Lake Reports Summary report information about selected (~130) lakes regarding water quality, upstream land use, usage, economic value and more. Reports are customizable by the user to include only that information which the user desires to include.

Water Quality

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

The vast majority of Iowa’s streams, rivers and lakes offer safe and high-quality fish that pose little or no threat to human health if consumed. Some limitations may apply for young children and pregnant women. Here’s a Fish Consumption Fact Sheet from the Iowa DNR and the Iowa Dept. of Public Health for more information. Here is a list of current fish consumption advisories for Iowa lakes and rivers.