Calculated Hydrographs for Unsteady Research Flows at Selected Sites Along the Colorado River Downstream from Glen Canyon Dam, Arizona, 1990 and 1991 PDF Download
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Author: Eleanor R. Griffin
Publisher:
ISBN:
Category : Stream measurements
Languages : en
Pages : 40
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Author: Eleanor R. Griffin
Publisher:
ISBN:
Category : Stream measurements
Languages : en
Pages : 40
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Author:
Publisher:
ISBN:
Category : Hydrology
Languages : en
Pages : 132
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Author:
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ISBN:
Category : Government publications
Languages : en
Pages : 1000
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Author: Stephen M. Wiele
Publisher:
ISBN:
Category : One-dimensional flow
Languages : en
Pages : 30
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Author: Stephen Mark Wiele
Publisher:
ISBN:
Category : Colorado River (Colo.-Mexico)
Languages : en
Pages :
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Author: Stephen Mark Wiele
Publisher: Forgotten Books
ISBN: 9781527738386
Category :
Languages : en
Pages : 26
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Excerpt from Modifications to an One-Dimensional Model of Unsteady Flow in the Colorado River Through the Grand Canyon, Arizona Calculations of the downstream progression and evolution of discharge waves released from Glen Canyon Dam on the Colorado River through Grand Canyon have been based on hydraulic geometry derived from measurements made at a maximum discharge of 792 cubic meters per second. Predictions of downstream hydrographs for larger discharges, such as the controlled flood in March - April 1996, which reached a maximum release of cubic meters per second, have been based on extrapolations of that hydraulic geometry. Data from the controlled flood have been used to extend the model to higher discharges using a method that differs from that used to determine hydraulic geometry in the original model. Scaling of the momentum equation shows that the wave is well represented by the kinematic-wave equation on the receding limb of the controlled-flood hydrograph. The wave speed as a function of discharge can be determined from data obtained at streamflow-gaging stations. The wave speed, which is equal to k/da, where Qk is the steady-flow discharge and A is the cross-sectional area, then can be integrated to determine the relation between discharge and cross-sectional area of the channel. A known value of the area corresponding to a given discharge supplies the integration constant. This procedure has yielded a modified hydraulic geometry for the model of flow in the Colorado River between Glen Canyon Dam and Lake Mead that has been extended to cubic meters per second. A numerical method modified for higher rates of change in discharge and the new hydraulic geometry have improved the accuracy of the model for discharges greater than about 800 cubic meters per second. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
Author:
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Category : Agriculture
Languages : en
Pages : 2376
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Author:
Publisher:
ISBN:
Category : Colorado River (Colo.-Mexico)
Languages : en
Pages : 112
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ISBN:
Category : Biotic communities
Languages : en
Pages : 0
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Author:
Publisher:
ISBN:
Category : Agriculture
Languages : en
Pages : 606
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