Pierson-upper
Low HazardNot Rated ConditionEmergency Action Plan: Not Required
Location
| State | Oregon |
| County | Washington |
| Nearest City | INDIVIDUAL RESIDENCES |
| River/Stream | TUALATIN RIVER, TRIB TO |
| Coordinates | 45.45643, -123.06061 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 31 ft |
| Dam Height | 31 ft |
| Dam Length | 120 ft |
| Year Completed | 1965 (61 years old) |
Storage & Hydraulics
| NID Storage | 18 acre-ft |
| Max Storage | 18 acre-ft |
| Normal Storage | 16 acre-ft |
| Surface Area | 1 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 205 cfs |
Ownership & Safety
| Purpose | Irrigation |
| Owner | JEFFERY W. GEIGER |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not Rated |
| Last Inspection | 03/17/2015 |
| Emergency Action Plan | Not Required |