Zellmer Subwatershed Site J-1a
Zellmer Subwatershed Site J-1a is an earth dam located in Woodbury County, Iowa, built in 2002. It carries a Low hazard potential classification.
About Zellmer Subwatershed Site J-1a
The primary purpose of Zellmer Subwatershed Site J-1a 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 Woodbury County Swcd (local government). It impounds the Tr- West Fork Little Sioux River near Climbing Hill.
The dam stands 42 feet tall and stretches 460 feet across, creates a reservoir covering 4 acres, has a maximum storage capacity of 70 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 2002, the structure is relatively new.
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 42 feet, this dam is taller than 89% of dams nationwide.
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Location
| State | Iowa |
| County | Woodbury |
| Nearest City | Climbing Hill |
| River/Stream | Tr- West Fork Little Sioux River |
| Coordinates | 42.41670, -96.11830 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 42 ft |
| Dam Height | 42 ft |
| Dam Length | 460 ft |
| Year Completed | 2002 (24 years old) |
Storage & Hydraulics
| NID Storage | 70 acre-ft |
| Max Storage | 70 acre-ft |
| Normal Storage | 45 acre-ft |
| Surface Area | 4 acres |
| Drainage Area | 0 sq mi |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | Woodbury County SWCD |
| Owner Type | Local Government |
| Hazard Classification | Low |
| Condition Assessment | Not Rated |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | IA03895 |
| Federal ID | IA03895 |
| More Info | State Dam Safety Program |