Arrowrock Dam
High HazardNot Available ConditionEmergency Action Plan: Yes
Location
| State | Idaho |
| County | Boise |
| Nearest City | BOISE |
| River/Stream | BOISE RIVER SNAKE RIVER |
| Coordinates | 43.59540, -115.92250 |
Physical Characteristics
| Dam Type | Concrete |
| NID Height | 350 ft |
| Dam Height | 350 ft |
| Dam Length | 1,150 ft |
| Year Completed | 1915 (111 years old) |
Storage & Hydraulics
| NID Storage | 272,224 acre-ft |
| Max Storage | 272,224 acre-ft |
| Normal Storage | 272,224 acre-ft |
| Surface Area | 3,256 acres |
| Drainage Area | 2,216 sq mi |
| Max Discharge | 16,080 cfs |
| Spillway Type | Controlled |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | BUREAU OF RECLAMATION |
| Owner Type | Federal |
| Hazard Classification | High |
| Condition Assessment | Not Available |
| Last Inspection | 05/05/2021 |
| Emergency Action Plan | Yes |