Simplot Waste Lagoon #1

Simplot Waste Lagoon #1 is an earth dam located in Umatilla County, Oregon. It carries a Significant hazard potential classification.

About Simplot Waste Lagoon #1

Simplot Waste Lagoon #1 is a dam in Umatilla, Oregon. The dam is owned by Jr Simplot Company Food Division (private). It impounds the Off Channel near Hermiston.

The dam stands 46 feet tall, and has a storage capacity of 535 acre-feet.

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 03/22/2018.

At 46 feet, this dam is taller than 91% of dams nationwide.

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Significant HazardNot Rated ConditionEmergency Action Plan: Not Required

Location

StateOregon
CountyUmatilla
Nearest CityHermiston
River/StreamOff Channel
Coordinates45.76545, -119.33382

Physical Characteristics

Dam TypeEarth
NID Height46 ft
Dam Height46 ft

Storage & Hydraulics

NID Storage535 acre-ft
Normal Storage535 acre-ft
Spillway TypeUncontrolled

Ownership & Safety

PurposeOther
OwnerJR SIMPLOT COMPANY FOOD DIVISION
Owner TypePrivate
Hazard ClassificationSignificant
Condition AssessmentNot Rated
Last Inspection03/22/2018
Emergency Action PlanNot Required

Identifiers

NID IDOR03858
Federal IDOR03858
More InfoState Dam Safety Program

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