Mccollough Dam is an earth dam located in Crawford County, Iowa, built in 2000. It carries a Low hazard potential classification.
Dam profile
NID height · 28 ft28 ft tall and 458 ft long, taller than 62% 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 Mccollough Dam
The primary purpose of Mccollough Dam is grade stabilization. Grade stabilization dams prevent erosion by reducing the slope and velocity of water flowing through a channel. They're commonly used to stop gullies from deepening and to protect downstream land and infrastructure. The dam is owned by Clyde Mccollough (private). It impounds the Tr- East Boyer River near Denison.
The dam stands 28 feet tall and stretches 458 feet across, creates a reservoir covering 4 acres, has a maximum storage capacity of 62 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 2000, the structure is 26 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 | Crawford |
| Nearest City | Denison |
| River/Stream | Tr- East Boyer River |
| Coordinates | 42.04350, -95.22930 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 28 ft |
| Dam Height | 28 ft |
| Dam Length | 458 ft |
| Year Completed | 2000 (26 years old) |
Storage & Hydraulics
| NID Storage | 62 acre-ft |
| Max Storage | 62 acre-ft |
| Normal Storage | 33 acre-ft |
| Surface Area | 4 acres |
| Drainage Area | 0 sq mi |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Grade Stabilization |
| Owner | Clyde Mccollough |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | IA03457 |
| Federal ID | IA03457 |
| More Info | State Dam Safety Program |