Izaak Walton Lake Dam
Izaak Walton Lake Dam is an earth dam located in Des Moines County, Iowa, built in 1921. It carries a Significant hazard potential classification and has a satisfactory condition assessment.
About Izaak Walton Lake Dam
The primary purpose of Izaak Walton Lake Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Des Moines County Board Of Supervisors (local government). It impounds the Tr-honey Creek near Mississippi River.
The dam stands 22 feet tall and stretches 450 feet across, creates a reservoir covering 12 acres, has a maximum storage capacity of 140 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1921, the structure is over a century old.
This dam has a significant hazard potential classification, meaning that a failure could cause significant economic damage — flooding roads, bridges, or property downstream — but is not expected to result in loss of life. Its condition is rated satisfactory, indicating no existing or potential dam safety deficiencies are recognized. The most recent inspection on record was 06/26/2024.
Search for dams near your address to see all dams in your area with hazard classifications and safety data.
Location
| State | Iowa |
| County | Des Moines |
| Nearest City | Mississippi River |
| River/Stream | Tr-honey Creek |
| Coordinates | 40.83240, -91.15050 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 22 ft |
| Dam Height | 22 ft |
| Dam Length | 450 ft |
| Year Completed | 1921 (105 years old) |
Storage & Hydraulics
| NID Storage | 140 acre-ft |
| Max Storage | 140 acre-ft |
| Normal Storage | 75 acre-ft |
| Surface Area | 12 acres |
| Drainage Area | 0 sq mi |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner | Des Moines County Board of Supervisors |
| Owner Type | Local Government |
| Hazard Classification | Significant |
| Condition Assessment | Satisfactory |
| Last Inspection | 06/26/2024 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | IA01882 |
| Federal ID | IA01882 |
| More Info | State Dam Safety Program |