Thompson Dam
Thompson Dam is an earth dam located in Cass County, Iowa, built in 1975. It carries a Low hazard potential classification.
About Thompson Dam
The primary purpose of Thompson Dam is fire protection, stock, or small fish pond. The dam maintains a small impoundment used for fire suppression, livestock watering, or as a fish pond. The dam is owned by Averille Thompson (private). It impounds the Tr- Seven Mile Creek near Morton Mills.
The dam stands 25 feet tall and stretches 525 feet across, creates a reservoir covering 4 acres, has a maximum storage capacity of 21 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1975, the structure is well into its service life at over 50 years old.
This dam has a low hazard potential classification, meaning that failure would cause minimal damage, limited primarily to the dam owner's property, with no expected loss of life.
Search for dams near your address to see all dams in your area with hazard classifications and safety data.
Location
| State | Iowa |
| County | Cass |
| Nearest City | Morton Mills |
| River/Stream | Tr- Seven Mile Creek |
| Coordinates | 41.31310, -94.81330 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 25 ft |
| Dam Height | 25 ft |
| Dam Length | 525 ft |
| Year Completed | 1975 (51 years old) |
Storage & Hydraulics
| NID Storage | 21 acre-ft |
| Max Storage | 21 acre-ft |
| Normal Storage | 21 acre-ft |
| Surface Area | 4 acres |
| Drainage Area | 0 sq mi |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Fire Protection, Stock, Or Small Fish Pond |
| Owner | Averille Thompson |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not Rated |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | IA02879 |
| Federal ID | IA02879 |
| More Info | State Dam Safety Program |