Hartwick Reservoir
Low HazardNot Rated ConditionEmergency Action Plan: Not Required
Location
| State | Oregon |
| County | Washington |
| Nearest City | ORENCO |
| River/Stream | DAIRY CREEK, TRIB TO |
| Coordinates | 45.61929, -123.14270 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 30 ft |
| Dam Height | 28 ft |
| Dam Length | 540 ft |
| Year Completed | 1956 (70 years old) |
Storage & Hydraulics
| NID Storage | 200 acre-ft |
| Max Storage | 200 acre-ft |
| Normal Storage | 170 acre-ft |
| Surface Area | 8 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 114 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Irrigation |
| Owner | HENRY J. GRASS M.D. |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not Rated |
| Last Inspection | 11/29/2018 |
| Emergency Action Plan | Not Required |