Johnson Dam is an earth dam located in Taylor County, Iowa, built in 1961. It carries a Low hazard potential classification.
Dam profile
NID height · 31 ft31 ft tall and 290 ft long, taller than 72% 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 Johnson Dam
The primary purpose of Johnson 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 Norman M Johnson (local government). It impounds the Tr-brushy Creek near Hopkins, Mo.
The dam stands 31 feet tall and stretches 290 feet across, creates a reservoir covering 3 acres, has a maximum storage capacity of 48 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 10/05/1972. That was over 54 years ago.
Search for dams near your address to see all dams in your area with hazard classifications and safety data.
Location
| State | Iowa |
| County | Taylor |
| Nearest City | Hopkins, Mo |
| River/Stream | Tr-brushy Creek |
| Coordinates | 40.65220, -94.83670 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 31 ft |
| Dam Height | 31 ft |
| Dam Length | 290 ft |
| Year Completed | 1961 (65 years old) |
Storage & Hydraulics
| NID Storage | 48 acre-ft |
| Max Storage | 48 acre-ft |
| Normal Storage | 28 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 | Norman M Johnson |
| Owner Type | Local Government |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Last Inspection | 10/05/1972 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | IA01075 |
| Federal ID | IA01075 |
| More Info | State Dam Safety Program |