Storage Dams

1      

Diversion Dams

1      

Canals

13.2 mi  

Laterals

47.2 mi  

Drains

14 mi  

Type:

Concrete weir, embankment wing

Location:

On the Niobrara River, near Dunlap, Nebraska.

Year Completed:

1945  

Dimensions:

   Structural height

12.6 ft  

   Weir height above streambed

6 ft  

   Weir crest length

80 ft  

   Crest elevation

3873.3 ft  

   Volume:

      Earth

5,100 yd³  

      Concrete

1,300 yd³  

Spillway:

Overflow wier

   Capacity at 3877 ft.

2,500 cfs  

Headworks:

At left end of dam on centerline of Mirage Flats Canal. Two 10 ft square radial gates (one for sluiceway)

   Diversion capacity

220 cfs  

Location:

From Dunlap Diversion Dam near Dunlap, Nebraska, generally east along the Niobrara River.

Length

13.2 mi  

Capacity

220 cfs