OK02503 - Foss Dam


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

Foss Dam


	Statistics

General

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

State (Map) ........................ Oklahoma

County ................................ Caddo

Project: ................................ Washita Basin

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

Location: ............................ 15 NW of Clinton

Watercourse: ..................... Washita River

Reservoir: ........................... Foss

Construction Date: ............1958-1961

National ID Number .......... OK02503

Hydrologic Unit Code .....

Dimensions

Crest Elevation of Dam: ..................... 1697.0 ft

Structural Height of Dam: ................... 142.0 ft

Crest Length:: .....................................18130.0 ft

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

Top of Active Conservation: ............ 1642.0 ft

Top of Inactive Conservation: ......... N/A

Spillway Crest: ..................................... 1668.6 ft

Top of Dead Storage: ......................... 1597.2 ft

Streambed at Dam Axis : .....................1563.0 ft

Hydraulics

Normal Water Surface Elev: .........1652.0 ft

Hydraulic Height: ................................. 105.6 ft

Service Spillway Type:

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

Morning-Glory ......................................... Yes

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

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

Capacity at Elev: 1691.0 ft, 3,150 cfs

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

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

Outlet Works Capacity at

Elevation 1691.0 ft ........................ 4,450 cfs

Hydrology

Drainage Area: .............................. 1466.0 sq mi

Hydrometeorological Report HMR 51&52

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

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

Probable Maximum Flood (PMF) Report:

Peak Inflow: ................................. 426,100 cfs

Inflow Volume: ........................ 957,600 acre-ft

Flow Duration: ................................. 12.5 days

PMF Routing MWS Elev.: .................. 1652 ft

Initial Routing Elev: .......................... 1652.0 ft

Study Date: ................................ January 1989

Power Generation

Power Generation at Dam Site - None

Bureau of Reclamation Power Program

Narration

Geology

The dam site foundation consists of sandy and silty clay overburden underlain by essentially horizontally bedded sandstones, shales and gypsum of the Cloud Chief formation. Overburden materials vary from 15 to 20 feet on the left abutment and from 0 to 6 feet on the right abutment. In the old or buried river channel, the depth to bedrock is about 125 feet. The upper 70 feet of overburden is composed of silty and sandy clay, while the remaining 55 feet is sand and gravel. Beneath the gravel, bedrock consists of a 15-foot bed of silty sandstone underlain by seven feet of gypsum.

Links

| Recreation |

| Dams Located by State | USBR Oklahoma Dams | Great Plains Region - South |

| Owner: Bureau of Reclamation, Oklahoma-Texas Area Office,
5316 HWY 290 W Ste. 510 Austin, TX 78735-8931 (512) 899-4150

| Operator: Foss Reservoir Master Conservancy District,
HC 66, Box 102, Foss, OK 73647-9616, (580) 592-4421