Lum Hollow Subwatershed M-3847 is an earth dam located in Woodbury County, Iowa, built in 1959. It carries a Low hazard potential classification.
Dam profile
NID height · 55 ft55 ft tall and 600 ft long, taller than 94% of U.S. dams with a recorded height. Height is drawn to scale against a ten-story building, about 100 ft; the profile is a generic embankment section and the water level is illustrative.
About Lum Hollow Subwatershed M-3847
Lum Hollow Subwatershed M-3847 is a dam in Woodbury, Iowa. The dam is owned by Woodbury County Swcd (local government). It impounds the Lum Hollow Creek near Turin.
The dam stands 55 feet tall and stretches 600 feet across, creates a reservoir covering 5 acres, has a maximum storage capacity of 279 acre-feet, and collects water from a drainage area of 1 square miles. Completed in 1959, 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 55 feet, this dam is taller than 94% of dams nationwide.
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Location
| State | Iowa |
| County | Woodbury |
| Nearest City | Turin |
| River/Stream | Lum Hollow Creek |
| Coordinates | 42.27910, -95.96720 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 55 ft |
| Dam Height | 55 ft |
| Dam Length | 600 ft |
| Year Completed | 1959 (67 years old) |
Storage & Hydraulics
| NID Storage | 279 acre-ft |
| Max Storage | 279 acre-ft |
| Normal Storage | 71 acre-ft |
| Surface Area | 5 acres |
| Drainage Area | 1 sq mi |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Other |
| Owner | Woodbury County Swcd |
| Owner Type | Local Government |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | IA01709 |
| Federal ID | IA01709 |
| More Info | State Dam Safety Program |