NE01070 - Enders Dam


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Enders Dam


	Statistics

General

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

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

County .................................Chase

Project: ...............PSMBP-Frenchman-Cambridge

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

Location: .............................1.5 mi from Enders

Watercourse: ......................Frenchman River

Reservoir: ............................Enders

Construction Date: ............1947-1951

National ID Number .......... NE01070

Hydrologic Unit Code .....

Dimensions

Crest Elevation of Dam: ...................... 3137.5 ft

Structural Height of Dam: .................... 134.0 ft

Crest Length: ........................................ 2603.0 ft

Top of Joint Use: ................................. N/A

Top of Active Conservation: ............. 3112.3 ft

Top of Inactive Conservation: ........... 3082.4 ft

Spillway Crest: ...................................... 3097.0 ft

Top of Dead Storage: .......................... 3080.0 ft

Streambed at Dam Axis : ..................... 3042.0 ft

Hydraulics

Normal Water Surface Elev: ................3112.3 ft

Hydraulic Height: .................................... 93.0 ft

Service Spillway Type:

Uncontrolled Crest ................................ No

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

Crest Length ......................................... N/A

Gated ..................................................... Yes

Capacity at Elev: 3129.0 ft, 200,000 cfs

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

Capacity at Elev. ................................. 0 cfs

Outlet Works Capacity at

Elevation 3129.0 ft., ....................... 1431 cfs

Hydrology

Drainage Area: ...............................1097.0 sq mi

Hydrometeorological Report HMR 51&52

Flood Type: ....................May-August General

Storm Duration: ........................................ 72 hrs

Probable Maximum Flood (PMF) Report:

Peak Inflow: ................................... 328,000 cfs

Inflow Volume: .........................449,300 acre-ft

Flow Duration: ....................................... 80 hrs

PMF Routing MWS Elev.: ...................... N/A

Initial Routing Elev: .......................... 3112.3 ft

Study Date: ............................ November 1983

Power Generation

Power Generation at Dam Site - None

Bureau of Reclamation Power Program

Narration

Geology

The Pierre Shale of Upper Cretaceous Age underlies the dam and reservoir area at a depth of 175 feet below the valley floor. The Ogallala Formation of Pliocene Age unconformably overlies the Pierre Shale. The Ogallala Formation is composed of fine to course sand, some gravel, calcareous silt, silty sands, silts and clays. Various degrees of calcareous cementation occur, resulting in lenses of varying loose unconsolidated to very firm compact materials at irregular intervals. The Ogallala beds lie almost horizontal and structural irregularities, such as faulting, have been observed in the area. The overburden consists of alluvial materials on the valley floor and of reworked loess and slope wash materials on the valley sides. The alluvial materials are a mixture of fine sand and small pea gravel with a high percentage of chalk particles. The reworked loess ranges from sandy to clayey loam of low to moderate density. The slope wash is a mixture of loess and Ogallala talus resulting from colluvial action.

Links

| Recreation |

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

| Owner: Bureau of Reclamation, Nebraska-Kansas Area Office,
PO Box 1607, Grand Island, NE 68802-1607, (308) 389-4622

| Operator: Bureau of Reclamation, Nebraska-Kansas Area Office,
PO Box 1607, Grand Island, NE 68802-1607, (308) 389-4622