Diamond Lake

General Information

County: Dickinson
Location: 2 miles east, 2 miles north of Montgomery
Acres: 143.00
Maximum Depth: 7 ft. (1991)
Motoring Restrictions: none

Nearby Parks

Lower Gar State Recreation Area
Mini-Wakan State Park
Trappers Bay State Park
Gull Point State Park
Gull Point State Park
Marble Beach State Recreation Area
Emerson Bay State Recreation Area
Elinor Bedell State Park
Pikes Point State Park
Templar State Recreation Area

Amenities

Amenities at Diamond Lake include:

• Boat Access
• Hard Surface Boat Ramp
• Accessible Shoreline

Fishing Report

No recent updates

Popular Fish Species at this Lake

• Black Bullhead
• Largemouth Bass
• Northern Pike
• Yellow Perch

Lake Maps

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

Fish Stocking

• 9/29/22 - 43,230 Bluegill (2)
• 6/3/22 - 778 Northern Pike (2.1)
• 6/24/22 - 15,046 Yellow Perch (1.6)
• 4/21/22 - 55,370 Northern Pike (Fry)
• 10/3/22 - 736 Largemouth Bass (3.2)
• 06/28/2021 - 1,449 Largemouth Bass (1.6)
• 06/18/2021 - 20,772 Yellow Perch (1)
• 04/08/2021 - 40,396 Northern Pike (Fry)
• 06/06/2018 - 1,755 Bluegill (4)
• 06/05/2018 - 2,762 Northern Pike (2.7)
• 05/02/2018 - 250 Yellow Perch (7.5)
• 04/27/2018 - 25,740 Northern Pike (Fry)

Aquatic Invasive Species

    No known aquatic invasive species have been found

Regulations

The Fishing Regulations brochure is available for download. The summaries listed below are a partial listing provided for your benefit.

• Black Bullhead
• Season: Continuous
• Daily Bag Limit: unlimited
• 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:
• Northern Pike
• Season: Continuous, except for boundary lakes
• Daily Bag Limit: 3 fish
• Possession Limit: 6 fish
• Length Limit: none
• Other: Except for border lakes
• Yellow Perch
• Season: Continuous
• Daily Bag Limit: 25 fish
• Possession Limit: 50 fish
• Length Limit: none
• Other:

Fishing Forecast

Diamond Lake was drawn down and renovated in 2021. The lake was restocked in 2022 with bluegill, largemouth bass, yellow perch and northern pike. In the spring of 2024 the lake was assessed with multiple electrofishing runs, but was largely unsuccessful due to limited catch.(2024)

Fish Survey Data

Tip: Click the arrow in the lower right corner to view the Fish Survey Data tool in full-screen mode.

Contacts

• Daniel Dirks, Conservation Officer; 712-260-1018; Dan.Dirks@dnr.iowa.gov
• Mike Hawkins, Fisheries Biologist; 712-336-1840; Michael.Hawkins@dnr.iowa.gov
• Blake Mills, Conservation Officer; 712-260-1017; Blake.Mills@dnr.iowa.gov

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.

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