NE01075 - Minatare Dam


Home \| About Us \| News \| Programs & Activities \| Library \| Water Operations \| Site Index

Minatare Dam


	Statistics

General

Region (Map) : ................ Great Plains

State (Map) ...................... Nebraska

County .............................. Scotts Bluff

Project: .............................. North Platte

Dam type: ......................... Earthfill

Location: .......................... 11 mi NE of Scottsbluff

Watercourse: ................... Minatare Supply Canal

Reservoir: ......................... Lake Minatare

Construction Date: ......... 1912-1915

National ID Number ........ NE01075

Hydrologic Unit Code ...

Dimensions

Crest Elevation of Dam: ...................... 4140.0 ft

Structural Height of Dam: ..................... 114.0 ft

Crest Length: ........................................ 3760.0 ft

Top of Joint Use: .......................................... NA

Top of Active Conservation: ............. 4125.0 ft

Top of Inactive Conservation: ........... 4074.0 ft

Spillway Crest: ...................................... 4125.0 ft

Top of Dead Storage: .......................... 4075.0 ft

Streambed at Dam Axis : ..................... 4077.0 ft

Hydraulics

Normal Water Surface Elev: ............... 4125.0 ft

Hydraulic Height: .................................... 48.0 ft

Service Spillway Type:

Uncontrolled Crest ............................... Yes

Morning-Glory ........................................... No

Crest Length ........................................ 100 ft

Gated ....................................................... No

Capacity at Elev: 4127.2 ft,............. 1,020 cfs

Auxiliary Spillway ......................................... No

Capacity at Elev. ..................................... NA

Outlet Works Capacity at

Elevation 4127.0 ft., ......................... 880 cfs

Hydrology

Drainage Area: ........................................... sq mi

Hydrometeorological Report HMR xx

Flood Type: ............................... General

Storm Duration: ....................................... hrs

Probable Maximum Flood (PMF) Report:

Peak Inflow: .................................. cfs

Inflow Volume: ........................ acre-ft

Flow Duration: ......................................0 days

PMF Routing MWS Elev.: ................. x.0 ft

Initial Routing Elev: ............................ x.0 ft

Study Date: xx 19

Power Generation

Power Generation at Dam Site - None

Bureau of Reclamation Power Program

Narration

Geology

Lake Minatare Reservoir is within the High Plains physiographic province, near the northern edge of a terrace of the North Platte River. A veneer of wind- and water-intermixed and interlayed sand, silt and some gravel, cover the terrace. Their surficial materials are noncohesive and have little resistance to erosion by wind or water. The terrace is underlain by the Brule Formation, a Tertiary siltstone to sandy siltstone of continental origin, which forms the foundation for Minatare Dam and Reservoir. The Brule is a soft but well-compacted tan to yellowish-brown sedimentary rock. The sand content is reported to gradually increase from the base toward the upper contact of the formation. The Brule is weakly calccareously cemented and tends to break down when exposed.

Links

| Recreation |

| Dams Located by State | USBR Nebraska Dams | North Great Plains Region Dams |

| Owner: Bureau of Reclamation, Wyoming Area Office,
PO Box 1630, Mills, WY 82644-1630, (307) 261-5671

| Operator: Pathfinder Irrigation District,
PO Box 338, Mitchell, NE 69357, (308) 623-1022