Flat Top Detention Dam
Flat Top Detention Dam is a gravity dam located in Mohave County, Arizona, built in 1962. It carries a Low hazard potential classification.
About Flat Top Detention Dam
The primary purpose of Flat Top Detention Dam is flood risk reduction. The dam is designed to control downstream flooding by temporarily storing excess water during storms and releasing it at a controlled rate. The dam is owned by Doi Blm (federal). It impounds the Clayhole Wash near Hurricane Ut.
The dam stands 22 feet tall and stretches 4,200 feet across, creates a reservoir covering 324 acres, has a maximum storage capacity of 1,680 acre-feet, and collects water from a drainage area of 370 square miles. Completed in 1962, 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 05/11/2018.
Search for dams near your address to see all dams in your area with hazard classifications and safety data.
Location
| State | Arizona |
| County | Mohave |
| Nearest City | Hurricane Ut |
| River/Stream | Clayhole Wash |
| Coordinates | 36.76434, -113.12291 |
Physical Characteristics
| Dam Type | Gravity |
| NID Height | 22 ft |
| Dam Length | 4,200 ft |
| Year Completed | 1962 (64 years old) |
Storage & Hydraulics
| NID Storage | 1,680 acre-ft |
| Max Storage | 1,680 acre-ft |
| Surface Area | 324 acres |
| Drainage Area | 370 sq mi |
| Max Discharge | 392 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | DOI BLM |
| Owner Type | Federal |
| Hazard Classification | Low |
| Condition Assessment | Not Rated |
| Last Inspection | 05/11/2018 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | AZ20011 |
| Federal ID | AZ20011 |
| More Info | State Dam Safety Program |