Arp Dam
Arp Dam is an earth dam located in Johnson County, Iowa, built in 1970. It carries a Low hazard potential classification.
About Arp Dam
The primary purpose of Arp Dam 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 Regis Arp (private). It impounds the Tr-knapp Creek near Coralville Reservoir.
The dam stands 31 feet tall and stretches 322 feet across, creates a reservoir covering 2 acres, has a maximum storage capacity of 42 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1970, 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.
Search for dams near your address to see all dams in your area with hazard classifications and safety data.
Location
| State | Iowa |
| County | Johnson |
| Nearest City | Coralville Reservoir |
| River/Stream | Tr-knapp Creek |
| Coordinates | 41.81530, -91.80100 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 31 ft |
| Dam Height | 31 ft |
| Dam Length | 322 ft |
| Year Completed | 1970 (56 years old) |
Storage & Hydraulics
| NID Storage | 42 acre-ft |
| Max Storage | 42 acre-ft |
| Normal Storage | 31 acre-ft |
| Surface Area | 2 acres |
| Drainage Area | 0 sq mi |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Fire Protection, Stock, Or Small Fish Pond |
| Owner | Regis Arp |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not Rated |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | IA01327 |
| Federal ID | IA01327 |
| More Info | State Dam Safety Program |