Blockton Watershed Site W-4 is an earth dam located in Taylor County, Iowa, built in 1966. It carries a Low hazard potential classification.
Dam profile
NID height · 24 ft24 ft tall and 530 ft long. 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 Blockton Watershed Site W-4
The primary purpose of Blockton Watershed Site W-4 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 Taylor County Swcd (local government). It impounds the Tr-platte River near Blockton.
The dam stands 24 feet tall and stretches 530 feet across, creates a reservoir covering 4 acres, has a maximum storage capacity of 74 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1966, 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 03/13/1968. That was over 58 years ago.
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Location
| State | Iowa |
| County | Taylor |
| Nearest City | Blockton |
| River/Stream | Tr-platte River |
| Coordinates | 40.67880, -94.49040 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 24 ft |
| Dam Height | 24 ft |
| Dam Length | 530 ft |
| Year Completed | 1966 (60 years old) |
Storage & Hydraulics
| NID Storage | 74 acre-ft |
| Max Storage | 74 acre-ft |
| Normal Storage | 23 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 | Taylor County Swcd |
| Owner Type | Local Government |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Last Inspection | 03/13/1968 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | IA01062 |
| Federal ID | IA01062 |
| More Info | State Dam Safety Program |