Miller Reservoir (wasco)

Miller Reservoir (wasco) is an earth dam located in Wasco County, Oregon, built in 1952. It carries a Low hazard potential classification.

About Miller Reservoir (wasco)

The primary purpose of Miller Reservoir (wasco) is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by David Ryan (private). It impounds the Unnamed Trib/white River near Wamic.

The dam stands 30 feet tall and stretches 548 feet across, creates a reservoir covering 10 acres, has a storage capacity of 106 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1952, 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. The most recent inspection on record was 07/19/2019.

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Low HazardNot Rated ConditionEmergency Action Plan: Not Required

Location

StateOregon
CountyWasco
Nearest CityWamic
River/StreamUnnamed Trib/white River
Coordinates45.14994, -121.37269

Physical Characteristics

Dam TypeEarth
NID Height30 ft
Dam Height30 ft
Dam Length548 ft
Year Completed1952 (74 years old)

Storage & Hydraulics

NID Storage106 acre-ft
Normal Storage106 acre-ft
Surface Area10 acres
Drainage Area0 sq mi

Ownership & Safety

PurposeIrrigation
OwnerDAVID RYAN
Owner TypePrivate
Hazard ClassificationLow
Condition AssessmentNot Rated
Last Inspection07/19/2019
Emergency Action PlanNot Required

Identifiers

NID IDOR00209
Federal IDOR00209
More InfoState Dam Safety Program

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