Upper Big Nemaha 20-a

Low HazardSatisfactory ConditionEmergency Action Plan: Not Required

Location

StateNebraska
CountyJohnson
Nearest CitySTERLING
River/StreamTR-N FK BIG NEMAHA RIVER
Coordinates40.51064, -96.44167

Physical Characteristics

Dam TypeEarth
NID Height50 ft
Dam Height40 ft
Dam Length889 ft
Year Completed1980 (46 years old)

Storage & Hydraulics

NID Storage534 acre-ft
Max Storage534 acre-ft
Normal Storage136 acre-ft
Surface Area17 acres
Drainage Area1 sq mi
Max Discharge298 cfs

Ownership & Safety

PurposeFlood Risk Reduction
OwnerNemaha Natural Resources District
Owner TypeLocal Government
Hazard ClassificationLow
Condition AssessmentSatisfactory
Last Inspection06/16/2021
Emergency Action PlanNot Required

Identifiers

NID IDNE01297
Federal IDNE01297
More InfoState Dam Safety Program

Nearby Dams

Upper Big Nemaha 20-b 0.5 mi Low Upper Big Nemaha J-11 0.9 mi Low Upper Big Nemaha 20-c 1.1 mi Low Upper Big Nemaha J-12a 1.3 mi Low Upper Big Nemaha 21-a 1.4 mi Low Upper Big Nemaha J-12 1.5 mi Low Upper Big Nemaha G-16a 1.5 mi Low Upper Big Nemaha L-12 1.8 mi Low Upper Big Nemaha J-45 1.8 mi Low Upper Big Nemaha G-15 1.9 mi Low