Windy Hill Subwatershed Site 3a-1
Windy Hill Subwatershed Site 3a-1 is an earth dam located in Woodbury County, Iowa, built in 1975. It carries a Low hazard potential classification.
About Windy Hill Subwatershed Site 3a-1
The primary purpose of Windy Hill Subwatershed Site 3a-1 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 Woodbury County Swcd (local government). It impounds the Tr-west Fork Little Sioux near Rolly Springs.
The dam stands 34 feet tall and stretches 520 feet across, creates a reservoir covering 6 acres, has a maximum storage capacity of 107 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.
At 34 feet, this dam is taller than 80% of dams nationwide.
Search for dams near your address to see all dams in your area with hazard classifications and safety data.
Location
| State | Iowa |
| County | Woodbury |
| Nearest City | Rolly Springs |
| River/Stream | Tr-west Fork Little Sioux |
| Coordinates | 42.38150, -96.09440 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 34 ft |
| Dam Height | 34 ft |
| Dam Length | 520 ft |
| Year Completed | 1975 (51 years old) |
Storage & Hydraulics
| NID Storage | 107 acre-ft |
| Max Storage | 107 acre-ft |
| Normal Storage | 33 acre-ft |
| Surface Area | 6 acres |
| Drainage Area | 0 sq mi |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Fire Protection, Stock, Or Small Fish Pond |
| Owner | Woodbury County SWCD |
| Owner Type | Local Government |
| Hazard Classification | Low |
| Condition Assessment | Not Rated |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | IA01657 |
| Federal ID | IA01657 |
| More Info | State Dam Safety Program |