Frequency of Runoff Volumes from Small Watersheds in the Upper Mississippi Loessial Soil Area PDF Download
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Author: Robert Earl Kohnke
Publisher:
ISBN:
Category : Mississippi River Valley
Languages : en
Pages : 224
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Book Description
Author: Robert Earl Kohnke
Publisher:
ISBN:
Category : Mississippi River Valley
Languages : en
Pages : 224
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Book Description
Author: N. E. Minshall
Publisher:
ISBN:
Category : Hydraulic structures
Languages : en
Pages : 42
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Book Description
Author: Kenneth G. Renard
Publisher:
ISBN:
Category :
Languages : en
Pages : 184
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Book Description
Author: Rodney E. Southard
Publisher:
ISBN:
Category : Floods
Languages : en
Pages : 44
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Book Description
Author: N. E. Minshall
Publisher: Forgotten Books
ISBN: 9781528128162
Category : Technology & Engineering
Languages : en
Pages : 42
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Book Description
Excerpt from Rates of Runoff for the Design of Conservation Structures in the Upper Mississippi Valley Upland Loessial Areas The Carrington soils are derived from friable glacial till. They have dark-colored surface layers like the Tama and Dodgeville soils and are deep and moderately per meable. Within this area records of runoff available as a basis for design of conser vation structures and practices on small drainage. Basins are limited to those obtained by the Soil Conservation Service at La Crosse and Fennimore, Wis., and the Ralston Creek cooperative project of the State University of Iowa, Department of Agriculture, and the United States Geological Survey. Records obtained from these studies include. 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: Richard P. R. Pannell
Publisher:
ISBN:
Category :
Languages : en
Pages : 150
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Book Description
Knowledge about sediment yields is important in developing management strategies for fluvial systems. The effect of sediment must be considered in the design of river structures and in determining water quality for biotic systems. Changes in sediment transport regimes are difficult to understand or predict due to the complexity of factors that influence sediment flux in fluvial systems. Relationships about sediment source, sinks and transport have long been studied and many of these relationships have been quantitatively and qualitatively defined. However, due to the scarcity of long-term sediment records it is often difficult to test these relationships. This study examines one of these long-term suspended sediment records for the Mississippi River at East Dubuque, Illinois from 1943 to 1996. Daily suspended sediment concentrations from the United States Army Corps of Engineers station at East Dubuque were analyzed for the spring and summer months (March - August). Sediment concentrations were analyzed in terms of average concentration during different hydrologic events at the large basin scale. These events included the spring snowmelt runoff (low and high magnitude) and different intensity storm runoff (low, moderate and high). Additionally, peak sediment concentrations during storm runoff were also analyzed. The general trend for all of these analyses suggests a significant decrease in sediment concentrations from the 1940s to the 1990s. The strongest trends are found in high magnitude snowmelt runoff and in high and moderate magnitude storm runoff. Peak concentrations in storm runoff have decreased from about 1000 ppm in the l940s to about 200 ppm in the 1990s. Average concentrations have likewise decreased from about 200 ppm in the 1940s to 100 ppm in the 1990s. Changes in land management practices are identified as being the primary environmental factor influencing sediment concentrations.
Author:
Publisher:
ISBN:
Category : Agricultural engineering
Languages : en
Pages : 224
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Book Description
Author: B. E. Colson
Publisher:
ISBN:
Category : Floods
Languages : en
Pages : 80
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Author: N. E. Minshall
Publisher:
ISBN:
Category : Hydraulic structures
Languages : en
Pages : 30
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Book Description
Author: William D. Potter
Publisher:
ISBN:
Category : Road drainage
Languages : en
Pages : 44
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Book Description
