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A Morphometric Analysis Of Selected Iowa Drainage Basins
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Book Synopsis A Morphometric Analysis of Selected Iowa Drainage Basins by : Donivan L. Gordon
Download or read book A Morphometric Analysis of Selected Iowa Drainage Basins written by Donivan L. Gordon and published by . This book was released on 1960 with total page 448 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A Morphometric Analysis of the North, Middle and South River Basins, in Relation to Their Sediment Loads by : Roderick H. Johns
Download or read book A Morphometric Analysis of the North, Middle and South River Basins, in Relation to Their Sediment Loads written by Roderick H. Johns and published by . This book was released on 1985 with total page 128 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Quantitative Geomorphology of Selected Drainage Basins in Iowa by : Robert Alan Lohnes
Download or read book Quantitative Geomorphology of Selected Drainage Basins in Iowa written by Robert Alan Lohnes and published by . This book was released on 1964 with total page 222 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Flood-plain and Channel Aggradation at Selected Bridge Sites in the Iowa and Skunk River Basins, Iowa by : David A. Eash
Download or read book Flood-plain and Channel Aggradation at Selected Bridge Sites in the Iowa and Skunk River Basins, Iowa written by David A. Eash and published by . This book was released on 1996 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Proceedings of the Iowa Academy of Science by : Iowa Academy of Science
Download or read book The Proceedings of the Iowa Academy of Science written by Iowa Academy of Science and published by . This book was released on 1974 with total page 228 pages. Available in PDF, EPUB and Kindle. Book excerpt: List of members in each volume.
Book Synopsis Comparisons of Estimates of Annual Exceedance-Probability Discharges for Small Drainage Basins in Iowa, Based on Data Through Water Year 2013 by : David A. Eash
Download or read book Comparisons of Estimates of Annual Exceedance-Probability Discharges for Small Drainage Basins in Iowa, Based on Data Through Water Year 2013 written by David A. Eash and published by . This book was released on 2015 with total page 37 pages. Available in PDF, EPUB and Kindle. Book excerpt: Traditionally, the Iowa Department of Transportation has used the Iowa Runoff Chart and single-variable regional-regression equations (RREs) from a U.S. Geological Survey report (published in 1987) as the primary methods to estimate annual exceedance-probability discharge (AEPD) for small (20 square miles or less) drainage basins in Iowa. With the publication of new multi- and single-variable RREs by the U.S. Geological Survey (published in 2013), the Iowa Department of Transportation needs to determine which methods of AEPD estimation provide the best accuracy and the least bias for small drainage basins in Iowa. Twenty five streamgages with drainage areas less than 2 square miles (mi2) and 55 streamgages with drainage areas between 2 and 20 mi2 were selected for the comparisons that used two evaluation metrics. Estimates of AEPDs calculated for the streamgages using the expected moments algorithm/multiple Grubbs-Beck test analysis method were compared to estimates of AEPDs calculated from the 2013 multivariable RREs; the 2013 single-variable RREs; the 1987 single-variable RREs; the TR-55 rainfall-runoff model; and the Iowa Runoff Chart. For the 25 streamgages with drainage areas less than 2 mi2, results of the comparisons seem to indicate the best overall accuracy and the least bias may be achieved by using the TR-55 method for flood regions 1 and 3 (published in 2013) and by using the 1987 single-variable RREs for flood region 2 (published in 2013). For drainage basins with areas between 2 and 20 mi2, results of the comparisons seem to indicate the best overall accuracy and the least bias may be achieved by using the 1987 single-variable RREs for the Southern Iowa Drift Plain landform region and for flood region 3 (published in 2013), by using the 2013 multivariable RREs for the Iowan Surface landform region, and by using the 2013 or 1987 single-variable RREs for flood region 2 (published in 2013). For all other landform or flood regions in Iowa, use of the 2013 single-variable RREs may provide the best overall accuracy and the least bias. An examination was conducted to understand why the 1987 single-variable RREs seem to provide better accuracy and less bias than either of the 2013 multi- or single-variable RREs. A comparison of 1-percent annual exceedance-probability regression lines for hydrologic regions 1-4 from the 1987 single-variable RREs and for flood regions 1-3 from the 2013 single-variable RREs indicates that the 1987 single-variable regional-regression lines generally have steeper slopes and lower discharges when compared to 2013 single-variable regional-regression lines for corresponding areas of Iowa. The combination of the definition of hydrologic regions, the lower discharges, and the steeper slopes of regression lines associated with the 1987 single-variable RREs seem to provide better accuracy and less bias when compared to the 2013 multi- or single-variable RREs; better accuracy and less bias was determined particularly for drainage areas less than 2 mi2, and also for some drainage areas between 2 and 20 mi2. The 2013 multi- and single-variable RREs are considered to provide better accuracy and less bias for larger drainage areas. Results of this study indicate that additional research is needed to address the curvilinear relation between drainage area and AEPDs for areas of Iowa.
Book Synopsis Selected Water Resources Abstracts by :
Download or read book Selected Water Resources Abstracts written by and published by . This book was released on 1991 with total page 884 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Morphometric Analysis of Bedrock-controlled Drainage Basins in Glaciated Terrain of Summit and Portage Counties, Ohio by : John David Thompson
Download or read book Morphometric Analysis of Bedrock-controlled Drainage Basins in Glaciated Terrain of Summit and Portage Counties, Ohio written by John David Thompson and published by . This book was released on 1980 with total page 138 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Water-quality Assessment of the Eastern Iowa Basins by : Kent D. Becher
Download or read book Water-quality Assessment of the Eastern Iowa Basins written by Kent D. Becher and published by . This book was released on 2001 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Water-quality Assessment of the Eastern Iowa Basins by : Kent D. Becher
Download or read book Water-quality Assessment of the Eastern Iowa Basins written by Kent D. Becher and published by . This book was released on 2001 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Selected Water Resources Abstracts by :
Download or read book Selected Water Resources Abstracts written by and published by . This book was released on 1991 with total page 1424 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Northwestern Iowa river basins by : Iowa. State Planning Board. Water Resources Division
Download or read book Northwestern Iowa river basins written by Iowa. State Planning Board. Water Resources Division and published by . This book was released on 1936 with total page 264 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Selected Nutrients and Pesticides in Streams of the Eastern Iowa Basins, 1970-95 by :
Download or read book Selected Nutrients and Pesticides in Streams of the Eastern Iowa Basins, 1970-95 written by and published by . This book was released on 1999 with total page 78 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Morphometric Analysis of Drainage Basins, Illustrated by Some Examples of 3rd-order Basins in Uganda by : John Charles Doornkamp
Download or read book The Morphometric Analysis of Drainage Basins, Illustrated by Some Examples of 3rd-order Basins in Uganda written by John Charles Doornkamp and published by . This book was released on 1967 with total page 23 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis South Fork Iowa River Watershed Selected for a National Water-quality Study by :
Download or read book South Fork Iowa River Watershed Selected for a National Water-quality Study written by and published by . This book was released on 2005 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Iowa-Cedar river basin by : Iowa. State Planning Board. Water Resources Division
Download or read book Iowa-Cedar river basin written by Iowa. State Planning Board. Water Resources Division and published by . This book was released on 1936 with total page 352 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Des Moines, Skunk and southeasrern Iowa river basins by : Iowa. State Planning Board. Water Resources Division
Download or read book Des Moines, Skunk and southeasrern Iowa river basins written by Iowa. State Planning Board. Water Resources Division and published by . This book was released on 1936 with total page 370 pages. Available in PDF, EPUB and Kindle. Book excerpt: