Download or read book Stream Channel Responses to Streamflow Diversion on Small Streams of the Snake River Drainage Idaho written by Carolyn C. Bohn and published by . This book was released on 1998 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Stream Channel Responses to Streamflow Diversion on Small Streams of the Snake River Drainage Idaho written by Carolyn C. Bohn and published by . This book was released on 2000 with total page 19 pages. Available in PDF, EPUB and Kindle. Book excerpt: The effects on channels of small, low-head seasonal water diversions in the Snake River drainage were investigated. Channels below small diversions were compared to the channels immediately above the same diversions to determine if differences in flow conveyance, substrate sediment size distribution, or streamside vegetation density were present. Estimates of flow conveyance were greater above the diversions, as measured by the area between the edges of vegetation on both banks, and by frequent-flow indicators, which generally approximated bankfull stage. No significant difference in substrate particle size or in channel roughness was found between channels above and below diversions. Although use histories of the diversions were not available, limited observations and conversations with users suggest that many of the diversion structures did not substantially divert high springtime flows so that passage of channel-forming flows probably occurred. Some diversion structures apparently divert or trap a portion of the bedload. Stem diameters of vegetation 6 to 48 inches above the ground were significantly larger above the diversions. Tests of stem densities were not significant. Stratification by substrate, season and size of diversion, community type, and source of summer water may be necessary to properly evaluate the effects of small diversions on vegetation stem density and vigor. The elevation of the edge of vegetation appears to be a viable alternative to frequent flow or bankfull indicators for estimating flow conveyance. It also addresses the question of vegetative encroachment into the channel. Use of the edge of vegetation as a channel feature for flow estimates merits further testing. It appears that the operation of the small forest stream diversions studied has not substantially altered most of the parameters studied. Past hydrographs and historical hydrologic data, however, are needed to fully evaluate the channel and vegetation responses.
Download or read book Stream Channel Responses to Streamflow Diversion on Small Streams of the Snake River Drainage Idaho written by Carolyn C. Bohn and published by . This book was released on 2000 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt: The effects on channels of small, low-head seasonal water diversions in the Snake River drainage were investigated. Channels below small diversions were compared to the channels immediately above the same diversions to determine if differences in flow conveyance, substrate sediment size distribution, or streamside vegetation density were present. Estimates of flow conveyance were greater above the diversions, as measured by the area between the edges of vegetation on both banks, and by frequent-flow indicators, which generally approximated bankfull stage. No significant difference in substrate particle size or in channel roughness was found between channels above and below diversions. Although use histories of the diversions were not available, limited observations and conversations with users suggest that many of the diversion structures did not substantially divert high springtime flows so that passage of channel-forming flows probably occurred. Some diversion structures apparently divert or trap a portion of the bedload. Stem diameters of vegetation 6 to 48 inches above the ground were significantly larger above the diversions. Tests of stem densities were not significant. Stratification by substrate, season and size of diversion, community type, and source of summer water may be necessary to properly evaluate the effects of small diversions on vegetation stem density and vigor. The elevation of the edge of vegetation appears to be a viable alternative to frequent flow or bankfull indicators for estimating flow conveyance. It also addresses the question of vegetative encroachment into the channel. Use of the edge of vegetation as a channel feature for flow estimates merits further testing. It appears that the operation of the small forest stream diversions studied has not substantially altered most of the parameters studied. Past hydrographs and historical hydrologic data, however, are needed to fully evaluate the channel and vegetation responses.
Download or read book Research Paper RMRS written by and published by . This book was released on 1998 with total page 636 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Vegetation of the Glacier Lakes Ecosystem Experiments Site written by Claudia M. Regan and published by . This book was released on 1998 with total page 546 pages. Available in PDF, EPUB and Kindle. Book excerpt: Vegetation at the Glacier Lakes Ecosystem Experiment Site, a 600 ha research site at 3200 to 3500 m elevation in the Snowy Range of southeastern Wyoming, was categorized and described from an intensive sampling of species abundances. A total of 304 vascular plant taxa were identified through collection and herbarium documentation. Plots with tree species were separated from those without tree species for ordination and classification analyses. Detrended correspondence analysis was used to order plots along major axes of composition variation, which are inferred moisture and topographic gradients. Cluster analysis was used to categorize plots based on composition similarity. The resulting groups were named according to species dominants. We identified and described in detail 4 meadow, 4 thicket or scrub, 3 krummholz, and 2 forest plant associations.
Download or read book Quantifying Channel Maintenance Instream Flows written by Larry J. Schmidt and published by . This book was released on 2004 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Monthly Catalog of United States Government Publications written by and published by . This book was released on 2000 with total page 948 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Planning and Layout of Small Stream Diversions written by Dan S. Axness, Kin Clarkin and published by . This book was released on with total page 184 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book New Publications written by and published by . This book was released on 2000 with total page 142 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Bibliography of Agriculture with Subject Index written by and published by . This book was released on 2000 with total page 862 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Report on Snake River Streamflow Depletion written by Columbia Basin Inter-Agency Committee. Technical Subcommittee for Operating Plan and published by . This book was released on 1951 with total page 114 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Streamflow Gains and Losses in the Snake River and Ground water Budgets for the Snake River Plain Idaho and Eastern Oregon written by L. C. Kjelstrom and published by . This book was released on 1995 with total page 60 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Stream Flows in the Snake River Basin 1989 Conditions of Use and Management written by Alan C. Robertson and published by . This book was released on 1989 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Geological Survey Professional Paper written by Geological Survey (U.S.) and published by . This book was released on 1966 with total page 656 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book U S Geological Survey Professional Paper written by and published by . This book was released on 1966 with total page 652 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Space Nuclear Thermal Propulsion SNTP Program Particle Bed Reactor Propulsion Technology Development and Validation written by and published by . This book was released on 1993 with total page 734 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Proceedings of the Symposium on Water Resources Related to Mining and Energy Preparing for the Future written by Richard F. Dworsky and published by . This book was released on 1987 with total page 580 pages. Available in PDF, EPUB and Kindle. Book excerpt:
