Trenton Dam: Constructed 1949-1953 |
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... shale Slope protection : Riprap on gravel blanket on upstream face , seeded topsoil on downstream face Dimensions : Height : 144 feet above lowest ex- cavation in cutoff trench , 100 feet above riverbed Crest length : 8,600 feet Crest ...
... shale Slope protection : Riprap on gravel blanket on upstream face , seeded topsoil on downstream face Dimensions : Height : 144 feet above lowest ex- cavation in cutoff trench , 100 feet above riverbed Crest length : 8,600 feet Crest ...
Page 1
... shale , which at the damsite has a thickness of about 1 , 000 feet . This shale , deposited during the Cretaceous period , is overlain in the river valley by alluvial sands and on the valley abutments by Ogallala sand and gravel ...
... shale , which at the damsite has a thickness of about 1 , 000 feet . This shale , deposited during the Cretaceous period , is overlain in the river valley by alluvial sands and on the valley abutments by Ogallala sand and gravel ...
Page 4
... shale 50 40 30 20 GEOLOGICAL SECTION DAM Loess Fine sandy silt Aeolian sand , Fine - Medium . Silty Ogallala sediments UNITED STATES HTERIOR DEPARTMAN BECLAMAT MISSOURI RIVER BASIN PROJ FRENCHMAN - CAMBRIDGE DIVISION - M TRENTON DAM ...
... shale 50 40 30 20 GEOLOGICAL SECTION DAM Loess Fine sandy silt Aeolian sand , Fine - Medium . Silty Ogallala sediments UNITED STATES HTERIOR DEPARTMAN BECLAMAT MISSOURI RIVER BASIN PROJ FRENCHMAN - CAMBRIDGE DIVISION - M TRENTON DAM ...
Page 5
... shale , essentially a firm plastic shaley clay , serves as a foundation for the dam and appurtenant structures . It is soft and friable near the surface and be- comes harder as the depth increases . Silt , clay , and colloidal material ...
... shale , essentially a firm plastic shaley clay , serves as a foundation for the dam and appurtenant structures . It is soft and friable near the surface and be- comes harder as the depth increases . Silt , clay , and colloidal material ...
Page 7
... shale obtained at various depths during the exploration operations . Logs and locations of some of the exploratory holes are shown on figure 4 . An examination of the geologic profiles indicated a valley fill of alluvium to a depth of ...
... shale obtained at various depths during the exploration operations . Logs and locations of some of the exploratory holes are shown on figure 4 . An examination of the geologic profiles indicated a valley fill of alluvium to a depth of ...
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Common terms and phrases
accessory cut-off trench acre-feet Approach channel Axis backfill Berm blanket Blockout BUREAU OF RECLAMATION canal outlet centerline channel capacity coarse concrete conduit construction Contraction joint Counterweight crushed rock cutoff trench dam embankment designed discharge drain outlet emergency gate chamber Expansion joint Figure Float flood control floor gate structure gravel ground surface Grouted high-pressure gate Highway bridge holes horizontal hydraulic hydrostatic head inlet installed intake structure Limits of special load located loess material maximum Metal Nebr NORTH BORROW AREA Pierre shale piezometer Pipe handrail PROJ Radial gate railroad reinforcement relocation Republican River reservoir water surface riprap River outlet Rolled embankment SCALE OF FEET second-feet SECTION A-A Settlement point Shale surface Sheet SILT silty slope special compaction spillway crest spillway gates spillway structure steel stilling basin Stoplog storage Sump Sump pump surface at elevation surfaces where directed Trashrack structure Trenton Dam upstream vertical walls water surface elevation