Thompson Dam is an earth dam located in Cherokee County, Iowa, built in 1961. It carries a Low hazard potential classification.
Dam profile
NID height · 28 ft28 ft tall and 358 ft long, taller than 62% of U.S. dams with a recorded height. Height is drawn to scale against a two-story house, about 25 ft; the profile is a generic embankment section and the water level is illustrative.
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 Mildred Thompson (private). It impounds the Tr-little Sioux River near Cherokee.
The dam stands 28 feet tall and stretches 358 feet across, creates a reservoir covering 3 acres, has a maximum storage capacity of 50 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1961, 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. The most recent inspection on record was 01/03/1963. That was over 63 years ago.
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Location
| State | Iowa |
| County | Cherokee |
| Nearest City | Cherokee |
| River/Stream | Tr-little Sioux River |
| Coordinates | 42.81940, -95.50860 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 28 ft |
| Dam Height | 28 ft |
| Dam Length | 358 ft |
| Year Completed | 1961 (65 years old) |
Storage & Hydraulics
| NID Storage | 50 acre-ft |
| Max Storage | 50 acre-ft |
| Normal Storage | 21 acre-ft |
| Surface Area | 3 acres |
| Drainage Area | 0 sq mi |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Fire Protection, Stock, Or Small Fish Pond |
| Owner | Mildred Thompson |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Last Inspection | 01/03/1963 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | IA00194 |
| Federal ID | IA00194 |
| More Info | State Dam Safety Program |