Arp Dam is an earth dam located in Tama County, Iowa, built in 2021. It carries a Low hazard potential classification.
Dam profile
NID height · 19 ft19 ft tall and 480 ft long. 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 Arp Dam
The primary purpose of Arp Dam 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 Mike Arp (private). It impounds the Unnamed Trib to Wolf Creek near Traer.
The dam stands 19 feet tall and stretches 480 feet across, creates a reservoir covering 6 acres, has a maximum storage capacity of 81 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 2021, 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.
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Location
| State | Iowa |
| County | Tama |
| Nearest City | Traer |
| River/Stream | Unnamed Trib to Wolf Creek |
| Coordinates | 42.19340, -92.49350 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 19 ft |
| Dam Height | 19 ft |
| Dam Length | 480 ft |
| Year Completed | 2021 (5 years old) |
Storage & Hydraulics
| NID Storage | 81 acre-ft |
| Max Storage | 81 acre-ft |
| Normal Storage | 28 acre-ft |
| Surface Area | 6 acres |
| Drainage Area | 0 sq mi |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | Mike Arp |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | IA04292 |
| Federal ID | IA04292 |
| More Info | State Dam Safety Program |