Dam Safety Program


Dam Safety Program

The Iowa DNR is responsible for the state's dam safety program. The program involves the review and approval for the construction of new dams, maintaining an inventory of existing dams that meet minimum size criteria and the periodic inspection of dams that pose a significant risk to downstream life and property. Currently there are approximately 4000 dams on the state's dam inventory.

Listed below is information on when dams require permits, design references, and owner responsibilities.

If you have questions about an existing pond or dam, or are planning to construct a dam, feel free to contact us:

Casey Welty

Information about Safety at Low Head Dams and Low Head Dam Mitigation can be found on our Canoeing and Kayaking page.
Dam Safety
Recorded Webinars

DNR Dam Safety Administrative Rules Overview

An overview of the new Iowa DNR Dam Safety Administrative Rules

Administrative Rule Updates

to Iowa Administrative Code 567-Chapters 70, 71, 72, and 73
Iowa Department of Natural Resources

The updates to the Dam Safety Program rules have been approved by the Environmental Protection Commission and will become effective on October 13, 2021. 

Adopted and Filed - Dam Safety Rule

A webinar explaining the new rules will be held on October 13,2021 at 11:30am to 1pm.  

Electronic Document Retrieval

Scanned Dam Files Index

DNR Document Search Page

Any person may submit their request to inspect public records by submitting their request via our our Iowa Information and Public Records Request Portal.

Iowa Online Dam Inventory

Iowa Online Dam Inventory

The dam safety program maintains a database of dams in the state the meet the thresholds for the National Inventory of Dams.  Click on the link above the access the database.