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Author : Richard L. Johnson
Publisher :
ISBN 13 :
Total Pages : 128 pages
Book Rating : 4.56/5 ( download)
Download or read book Fish Ladders for John Day Dam, Columbia River, Oregon and Washington written by Richard L. Johnson and published by . This book was released on 1968 with total page 128 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 108 pages
Book Rating : 4.78/5 ( download)
Download or read book Fish Ladders for John Day Dam, Columbia River, Oregon and Washington; Hydraulic Model Investigations written by and published by . This book was released on 1968 with total page 108 pages. Available in PDF, EPUB and Kindle. Book excerpt: Facilities for passing fish upstream over John Day Dam include a powerhouse collection system with fishway entrances at each end and along the downstream face of the powerhouse, and a 24-ft-wide fish ladder with 1-on-10 slope on both sides of the river. The north fish ladder (except entrance section) and a portion of ladder adjacent to the south fish counting station were studied in a 1:10-scale model. A group of four typical diffusion chambers in each ladder was reproduced in a 1:8-scale model. Fishway weirs with 6-ft-long overflow crests at each end of a 12-ft-long nonoverflow section, upstream fins, and 18- by 18-in. orifices at the floor were adopted. Orifice sizes in the regulating sections were adjusted to control discharge and head drops between 19 nonoverflow bulkheads for an 11-ft range in forebay levels. Sloping floors, baffle beams at a constant elevation, and metering orifices sized to provide 60 cfs each were selected for diffusers in sloping portions of the fish ladders. (Modified author abstract).
Author : Richard L. Johnson
Publisher :
ISBN 13 :
Total Pages : 118 pages
Book Rating : 4.2C/5 ( download)
Download or read book Fish Ladders for John Day Dam, Columbia River, Oregon and Washington written by Richard L. Johnson and published by . This book was released on 1968 with total page 118 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : United States. Army. Corps of Engineers. North Pacific Division
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.99/5 ( download)
Download or read book Modification of Fish Ladders at John Day Dam, Columbia River, Oregon and Washington written by United States. Army. Corps of Engineers. North Pacific Division and published by . This book was released on 1984 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : United States. Army. Corps of Engineers. North Pacific Division. Hydraulic Laboratory
Publisher :
ISBN 13 :
Total Pages : 91 pages
Book Rating : 4.13/5 ( download)
Download or read book Modification of Fish Ladders at John Day Dam, Columbia River, Oregon and Washington written by United States. Army. Corps of Engineers. North Pacific Division. Hydraulic Laboratory and published by . This book was released on 1984 with total page 91 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : United States. Army. Corps of Engineers. Portland District
Publisher :
ISBN 13 :
Total Pages : 212 pages
Book Rating : 4.41/5 ( download)
Download or read book General Letter Report written by United States. Army. Corps of Engineers. Portland District and published by . This book was released on 1982 with total page 212 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : United States. Army. Corps of Engineers. Walla Walla District
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.05/5 ( download)
Download or read book John Day Lock and Dam, Columbia River, Oregon and Washington written by United States. Army. Corps of Engineers. Walla Walla District and published by . This book was released on 1970 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book John Day Lock and Dam North Fish Ladder Enterance Improvements, Columbia River, Oregon - Washington written by and published by . This book was released on 2002 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: "This Design Document Report provides background information and documents the design for improvements to the entrance and lower ladder sections of the John Day Lock and Dam North Fish Ladder (JDAN). The entrance and lower ladder sections include the fish ladder entrance structure, auxiliary water supply (AWS) system, lower ladder diffusers (diffusers #1-15), and lower ladder weirs (weirs #155-175)."--The Executive Summary.
Author : Richard L. Johnson
Publisher :
ISBN 13 :
Total Pages : 71 pages
Book Rating : 4.67/5 ( download)
Download or read book Fish Ladders for John Day Dam, Columbia River, Oregon and Washngton written by Richard L. Johnson and published by . This book was released on 1968 with total page 71 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book John Day Lock and Dam North Fish Ladder Alternative Study Report written by and published by . This book was released on 2009 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: "This Alternative Study Report documents the evaluation of five primary alternatives to improve the lower ladder portion of the John Day North (JDAN) Fish Ladder. The lower ladder system includes the fish ladder entrance, auxiliary water supply (AWS) system, diffusers, and lower ladder weirs. This report provides the project background and the conceptual or preliminary design of the alternatives so that relevant biological and hydraulic benefits can be weighed against the respective cost and operational consideration for each alternative. This process has been coordinated between the Portland District and regional agencies through regularly schedules (and occasional project specific meeting) of the Fish Facility Design Review Work Group (FFDRWG)." From the executive summary.
