Mcguire
Mcguire is a rockfill dam located in Yamhill County, Oregon, built in 2003. It carries a High hazard potential classification and has a satisfactory condition assessment.
About Mcguire
The primary purpose of Mcguire is water supply. The dam stores water for municipal, industrial, or agricultural use, helping ensure a reliable supply for the surrounding area. The dam is owned by Mcminnville Water And Light (public utility). It impounds the Nestucca River near Blaine.
The dam stands 111 feet tall and stretches 320 feet across, creates a reservoir covering 130 acres, has a maximum storage capacity of 5,000 acre-feet, and collects water from a drainage area of 3 square miles. Completed in 2003, the structure is relatively new.
This dam carries a high hazard potential classification, which means that a failure or uncontrolled release of water would likely cause loss of human life. This classification reflects the consequences of failure, not the likelihood — it indicates that people live or work in the area downstream. Its condition is rated satisfactory, indicating no existing or potential dam safety deficiencies are recognized. An emergency action plan is in place for this dam. The most recent inspection on record was 09/01/2020.
At 111 feet, this dam is taller than 98% of all dams in the United States.
Living Downstream
If you live or work downstream of this dam, consider taking these steps: learn your local evacuation routes, check whether your county emergency management office has a dam failure inundation map, and sign up for local emergency alerts. The Oregon dam safety program can provide more specific information about emergency planning for this structure.
Search for dams near your address to see all dams in your area with hazard classifications and safety data.
Location
| State | Oregon |
| County | Yamhill |
| Nearest City | Blaine |
| River/Stream | Nestucca River |
| Coordinates | 45.30923, -123.40865 |
Physical Characteristics
| Dam Type | Rockfill |
| NID Height | 111 ft |
| Dam Height | 111 ft |
| Dam Length | 320 ft |
| Year Completed | 2003 (23 years old) |
Storage & Hydraulics
| NID Storage | 9,790 acre-ft |
| Max Storage | 5,000 acre-ft |
| Normal Storage | 9,790 acre-ft |
| Surface Area | 130 acres |
| Drainage Area | 3 sq mi |
| Max Discharge | 820 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Water Supply |
| Owner | MCMINNVILLE WATER AND LIGHT |
| Owner Type | Public Utility |
| Hazard Classification | High |
| Condition Assessment | Satisfactory |
| Last Inspection | 09/01/2020 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | OR00514 |
| Federal ID | OR00514 |
| More Info | State Dam Safety Program |