Zellmer Subwtrshd #b 22+50 is an earth dam located in Woodbury County, Iowa, built in 1964. It carries a Low hazard potential classification.
Dam profile
NID height · 27 ft27 ft tall and 596 ft long, taller than 59% 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 Zellmer Subwtrshd #b 22+50
The primary purpose of Zellmer Subwtrshd #b 22+50 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 Riv near Rolly Springs.
The dam stands 27 feet tall and stretches 596 feet across, creates a reservoir covering 3 acres, has a maximum storage capacity of 52 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1964, 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.
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Location
| State | Iowa |
| County | Woodbury |
| Nearest City | Rolly Springs |
| River/Stream | Tr-west Fork Little Sioux Riv |
| Coordinates | 42.42950, -96.10760 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 27 ft |
| Dam Height | 27 ft |
| Dam Length | 596 ft |
| Year Completed | 1964 (62 years old) |
Storage & Hydraulics
| NID Storage | 52 acre-ft |
| Max Storage | 52 acre-ft |
| Normal Storage | 23 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 | Woodbury County Swcd |
| Owner Type | Local Government |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | IA01245 |
| Federal ID | IA01245 |
| More Info | State Dam Safety Program |