Deardorff, Betty Jane

Deardorff, Betty Jane is an earth dam located in Clackamas County, Oregon, built in 1971. It carries a Significant hazard potential classification.

About Deardorff, Betty Jane

Deardorff, Betty Jane is a dam in Clackamas, Oregon. The dam is owned by Doubletrees Farms (private). It impounds the Little Coal Creek near Scotts Mills.

The dam stands 68 feet tall and stretches 450 feet across, creates a reservoir covering 60 acres, has a maximum storage capacity of 1,300 acre-feet, and collects water from a drainage area of 1 square miles. Completed in 1971, the structure is well into its service life at over 50 years old.

This dam has a significant hazard potential classification, meaning that a failure could cause significant economic damage — flooding roads, bridges, or property downstream — but is not expected to result in loss of life. The most recent inspection on record was 05/16/2018.

At 68 feet, this dam is taller than 96% of all dams in the United States.

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Significant HazardNot Rated ConditionEmergency Action Plan: No

Location

StateOregon
CountyClackamas
Nearest CityScotts Mills
River/StreamLittle Coal Creek
Coordinates45.00005, -122.55033

Physical Characteristics

Dam TypeEarth
NID Height68 ft
Dam Height65 ft
Dam Length450 ft
Year Completed1971 (55 years old)

Storage & Hydraulics

NID Storage1,300 acre-ft
Max Storage1,300 acre-ft
Normal Storage1,030 acre-ft
Surface Area60 acres
Drainage Area1 sq mi
Max Discharge1,170 cfs
Spillway TypeUncontrolled

Ownership & Safety

PurposeOther
OwnerDOUBLETREES FARMS
Owner TypePrivate
Hazard ClassificationSignificant
Condition AssessmentNot Rated
Last Inspection05/16/2018
Emergency Action PlanNo

Identifiers

NID IDOR00497
Federal IDOR00497
More InfoState Dam Safety Program

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