Mortenson Subwatershed Sta99+92 Main is an earth dam located in Cherokee County, Iowa, built in 1950. It carries a Low hazard potential classification.
Dam profile
NID height · 41 ft41 ft tall and 400 ft long, taller than 87% 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 Mortenson Subwatershed Sta99+92 Main
The primary purpose of Mortenson Subwatershed Sta99+92 Main 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 Cherokee County Swcd (local government). It impounds the Tr-silver Creek near Quimby.
The dam stands 41 feet tall and stretches 400 feet across, creates a reservoir covering 6 acres, has a maximum storage capacity of 285 acre-feet, and collects water from a drainage area of 1 square miles. Completed in 1950, the structure is well-established, with more than 75 years of service.
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 41 feet, this dam is taller than 87% of dams nationwide.
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Location
| State | Iowa |
| County | Cherokee |
| Nearest City | Quimby |
| River/Stream | Tr-silver Creek |
| Coordinates | 42.64200, -95.56120 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 41 ft |
| Dam Height | 41 ft |
| Dam Length | 400 ft |
| Year Completed | 1950 (76 years old) |
Storage & Hydraulics
| NID Storage | 285 acre-ft |
| Max Storage | 285 acre-ft |
| Normal Storage | 68 acre-ft |
| Surface Area | 6 acres |
| Drainage Area | 1 sq mi |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Fire Protection, Stock, Or Small Fish Pond |
| Owner | Cherokee County Swcd |
| Owner Type | Local Government |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | IA01944 |
| Federal ID | IA01944 |
| More Info | State Dam Safety Program |