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Full-Text Articles in Physical Sciences and Mathematics
Modification Of The Stilling Basin At Arthur R. Bowman Dam, Oregon To Reduce Dissolved Gas Supersaturation, Perry Johnson
Modification Of The Stilling Basin At Arthur R. Bowman Dam, Oregon To Reduce Dissolved Gas Supersaturation, Perry Johnson
United States Bureau of Land Management: Staff Publications
A physical model study was conducted in the Hydraulics Laboratory of the us Bureau of Reclamation to develop a modification for the stilling basin at Arthur R. Bowman Dam, Oregon. Flow through the existing stilling basin generates supersaturated dissolved gas levels that exceed state standards. Alternatives stilling basin designs were considered. Resulting dissolved gas levels, modified energy dissipation, and potential structure and river bottom and bank erosion were evaluated.
Innovative Spillway Designs, Thomas Hepler
Innovative Spillway Designs, Thomas Hepler
United States Bureau of Land Management: Staff Publications
Research performed by the ASCE Hydraulics Division - Task Committee on Alternatives for Overtopping Protection for Dams includes the investigation of innovative spillway designs. This paper briefly describes the design and construction of labyrinth spillways, fuseplug embankments, and flexible membrane spillways. A more detailed discussion will be included in the final report of the Task Committee.
Study Of Groins On The Middle Rio Grande, Drew Baird, Cassie Klump
Study Of Groins On The Middle Rio Grande, Drew Baird, Cassie Klump
United States Bureau of Land Management: Staff Publications
The Albuquerque Projects Office of the Bureau of Reclamation installed groins on the Middle Rio Grande to provide bank protection at a severe bend located near Santa Clara Indian Pueblo, approximately 75 miles (121 kIn) upstream of Albuquerque, New Mexico. During the first season of operation of the groins, a discharge near the 2 year design flood of 7,600 ft.3 /s (215 m3 /s) was experienced at the site. Many of the groins showed damage following the recession of the runoff, but performed well at the site. Replacement of riprap will be accomplished before the next runoff season.
Steady And Unsteady Flow Profiles In Reclamation, Curtis Orvis
Steady And Unsteady Flow Profiles In Reclamation, Curtis Orvis
United States Bureau of Land Management: Staff Publications
The Bureau of Reclamation owns and operates over 300 dams throughout the 17 western states. For most of these structures, tailwater measurements and steady-state water surface profile computations have been made using the PSEUDO program. Accuracy in water surface profile computations especially downstream from powerplants has been important. Small changes in differential head can mean large changes in power production and associated revenues generated. Peaking operations and flow fluctuations downstream from some dams has made flow conditions unsteady. The DWOPER program has been used to evaluate tailwater conditions under fluctuating flows at a number of sites. The STARS model was …
Channel Restoration Above Elephant Butte Reservoir, Christopher A. Gorbach
Channel Restoration Above Elephant Butte Reservoir, Christopher A. Gorbach
United States Bureau of Land Management: Staff Publications
The Bureau of Reclamation is responsible for maintenance of channel facilities above Elephant Butte Reservoir in New Mexico. These facilities are designed to maximize the efficiency of water delivery into the reservoir pool. The major facilities operated and maintained by Reclamation include a rectified floodway channel and the Low Flow Conveyance Channel. When constructed in the 1950's, a period of prolonged drought and low reservoir levels, these channels extended some 20 (32 Ion) miles through then dry areas of the reservoir.
Between 1979 and 1987 flows in the Rio Grande were significantly above normal. Elephant Butte Reservoir filled for the …
Recent Criteria For Design Of Groins, Cassie Klump, Drew Baird
Recent Criteria For Design Of Groins, Cassie Klump, Drew Baird
United States Bureau of Land Management: Staff Publications
Groins are defined as an elongated obstruction with one end on the bank of a stream and the other end projecting into the flow. Groins may be permeable allowing water to flow through at reduced velocities or impermeable blocking the current. Groins have been used successfully for river bank protection since the 19th century. Extensive research was conducted to determine the most recent design criteria for groins.
The criteria necessary to design a groin field are:
1. groin orientation;
2. length and spacing of groins;
3. predicting scour at groins;
4. elevation of groin crest;
5. groin side slopes and …