Diamond Lake Park

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Diamond Lake Park

Diamond Lake Park, managed by Poweshiek County Conservation is a great place for recreation just outside of Montezuma. The park encompasses 660 acres of land and features a 90 acre lake, a fish cleaning station, hiking trails, a playground, 4 shelter houses, paved bike trails, and 100+ electrical and tent campsites, three shower houses, three restrooms, and 2 dump stations.  Thanks to support from the County Conservation Board we are constantly updating and adding to these amenities. Learn more about the park here!



Click here for map location

  • 98 Acre Lake

  • Fishing

  • Fish Cleaning Station

  • Shelters and Picnic Areas 

  • Grills

  • Camping w/Electric & Primitive

  • 2 Waste Water Dumping Stations

  • 2 Shower Facilities

  • Hard Surface Biking/Hiking Trails

  • Playground Area


  • Camping is a first come – first serve basis (No reservations are taken)
  • Primitive Camping $10.00 per night
  • Camping w/Electricity $20.00 per night
  • 14 day stay limit is enforced on all camp sites

Shelter Reservations

The main shelter is located on the hill above the playground. It was built in 2018 along with a new restroom.


The 2nd shelter is located right along the lake near fishing jetties and a shower house nearby.


The 3rd shelter is located on a hill farthest from the park entrance, with a beautiful view of the lake.

Camping at Diamond Lake Park is Permitted All Year!

Facilities will be opened and closed when the weather dictates

Water will be turned on and off when the weather dictates

Electricity will remain on year-round

(Click here for camping season information)

Diamond Lake Park Rules

The Poweshiek County Conservation Board welcomes you t Diamond Lake Park and invites you to utilize all of our community conversation areas.  Your suggestions and comments are greatly appreciated.

In order that we may continue to provide you with a rewarding outdoor recreational experience we ask that you adhere to the following rules:

  1. Each camper or tent must be registered before setting up the campsite.  The camper or tent may be left unattended for more than 24 hours if the camper or tent is registered for the nights in which the owner is absent.
  2. Camping is permitted only in designated areas and a two week time limit is set.
  3. Fires are permitted in fire rings only.  ABSOLUTELY DO NOT move the fire rings.
  4. Fire wood can be collected in the park.  the tree or branches must be dead and lying on the ground and only hand saws can be used.
  5. All garbage must be placed in the trash can or taken home with you.  Do not litter or transport trash into the park for dumping.
  6. Pets must be kept on a leash and any pet waste must be cleaned up by the owner.
  7. Fishing with minnows is prohibited.
  8. Bass and walleye length limit is 15 inches.  Bass and walleye less than 15 inches must be released under water immediately with as little injury as possible.
  9. Boats are restricted to electric trolling motors only.
  10. Swimming is prohibited.
  11. Use of ATV’s and golf carts is prohibited in any county conservation area, including roads and trails.

We also wish to remind park users not to remove, destroy or injure trees, shrubs, plants, flowers or any other natural attractions so that Diamond Lake may remain a sanctuary for your outdoor enjoyment.  “Leave nothing but footsteps and take nothing but pictures and memories.”

Poweshiek County Conservation Board
P.O. Box 666, Montezuma, IA  50171

Office (641) 623-3191  Ranger on duty (641) 990-3479