Three Mile Lake

General Information

County: Union
Location: 3 miles northwest of Afton
Acres: 880.00
Maximum Depth: 47 ft. (2019)
Motoring Restrictions: Inboards & personal watercrafts are prohibited

Nearby Parks

Green Valley State Park

Amenities

Amenities at Three Mile Lake include:
  • Boat Access
  • Fishing Jetty
  • Accessible Pier
  • Boat Rental
  • Picnic Area
  • Beach
  • Trails
  • Accessible Facilities
  • Playground
  • Restrooms
  • Camping
  • Good/Excellent Shorefishing
  • Hard Surface Boat Ramp
  • Fish Cleaning Station
Water temperature in most Mount Ayr district lakes is in low to mid 70's. For more information, please call the Mount Ayr Fisheries office at 641-464-3108.
Courtesy docks are installed at main boat ramp.
Bluegill - Fair: Try using jigs fished near cedar tree brushpiles or on the fish mounds for Bluegill up to 8.5 inches.
Largemouth Bass - Slow: Trying using jigs fished along weedlines or cedar tree brushpiles for Largemouth Bass of all sizes.
Download Printable Lake Map
Download Printable Fishing Structures Map

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

  • 10/24/2019 - 4,400 Walleye (9.4)
  • 10/20/2019 - 6,465 Blue Catfish (6.6)
  • 06/25/2019 - 8,814 Wiper (Hybrid Striped Bass) (1.3)
  • 04/30/2019 - 100,000 Walleye (Fry)
  • 10/31/2018 - 7,608 Blue Catfish (8.3)
  • 10/29/2018 - 339 Walleye (8.5)
  • 10/29/2018 - 3,742 Walleye (9.2)
  • 07/03/2018 - 9,314 Wiper (Hybrid Striped Bass) (1.81)
  • 05/07/2018 - 100,000 Walleye (Fry)
  • 7/14/2017 - 35,390 Blue Catfish (3.3")
  • 4/24/2017 - 2,640,000 Walleye (fry)
  • fall 2016 - 8,393 Walleye (9.8")
  • 10/14/16 - 15,913 Blue Catfish (6.8")
  • 10/12/16 - 89,959 Bluegill (1.9")
  • 10/25/2012 - 7,508 Walleye (8.2")
  • 06/20/2012 - 8,039 Wiper (Hybrid Striped Bass) (2.0")
  • 05/01/2012 - 880 Muskellunge (12.6")
  • 10/13/2011 - 6,802 Walleye (8.3")
  • 08/29/2011 - 8,800 Channel Catfish (8.7")
  • 06/22/2011 - 8,786 Wiper (Hybrid Striped Bass) (1.8")
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
  • Bluegill
    • Season: Continuous
    • Daily Bag Limit: 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:
  • Common Carp
    • Season: Continuous
    • Daily Bag Limit: none
    • Possession Limit: unlimited
    • Length Limit: none
    • Other: May be taken by hand fishing, by snagging, by spear or by bow and arrow, day or night.
  • Flathead 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:
  • Green Sunfish
    • Season: Continuous
    • Daily Bag Limit: none
    • Possession Limit: unlimited
    • 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:
  • Walleye
    • Season: Continuous
    • Daily Bag Limit: combined walleye, sauger and saugeye; 5 fish
    • Possession Limit: combined walleye, sauger and saugeye; 10 fish
    • Length Limit: none
    • Other:
  • White 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
  • Yellow Bass
    • Season: Continuous
    • Daily Bag Limit: none
    • Possession Limit: unlimited
    • Length Limit: none
    • Other:
  • Yellow Perch
    • Season: Continuous
    • Daily Bag Limit: 25 fish
    • Possession Limit: 50 fish
    • Length Limit: none
    • Other:
Spring electrofishing indicated good numbers of largemouth bass up to 20 inches are available to anglers. Good numbers of walleye are also available to anglers especially in the 13-16 inch length range. Fall fyke netting indicated moderate abundance of bluegill and crappie. Most of bluegill were in the 7-9 inch length range. Crappie were mostly in the 8.5-9.5 inch length range, but some larger crappie are available to anglers. Blue catfish were sampled in low abundance, but some large (8 lbs. +) blue catfish are available to anglers.(2020)
Tip: Click the arrow in the lower right corner to view the Fish Survey Data tool in full-screen mode.

Contacts

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.