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Report to the Commissioners of Miami, Shelby and Clark Counties, Ohio on Flood Protection in the Great Miami Valley

Report to the Commissioners of Miami, Shelby and Clark Counties, Ohio on Flood Protection in the Great Miami Valley

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By (author) John W Hill

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  • Publisher: Rarebooksclub.com
  • Format: Paperback | 44 pages
  • Dimensions: 189mm x 246mm x 2mm | 95g
  • Publication date: 13 September 2013
  • ISBN 10: 1236780566
  • ISBN 13: 9781236780560
  • Illustrations note: black & white illustrations

Product description

This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1916 edition. Excerpt: ...the lower level of Dayton, and the flood depths in the Miami River and on the bottoms would be greater than before. I can find nowhere in the literature of dams and reservoirs abroad, or in this country, of any such scheme as is proposed for the protection of Dayton, viz., the placing of three great reservoirs, even though they be only "Detention Reservoirs" (during times of great rainfall and run-off), so near the city to be protected, and so far down on the drainage area as to insure a large and rapid storage of water above the reservoir site, with possibly much damage to the property interests and people living on the lowlands along the river below the dam if these dams should fail. CHANNEL IMPROVEMENT. 111. In the Morgan scheme no control is proposed on_the Miami River above the Taylorsville Reservoir nor on Mad River above the Huffman Reservoir. FLOOD PROTECTION FOR DAYTON CHANNEL IMPROVEMENT. 112. The special flood protection for Dayton assumes a flood or stream flow of 189,840 sec. feet above Mad River junction; a flood of 236,352 sec. feet below Mad River junction, and a flood of 242,155 sec. feet below Wolf Creek, as shown below and by Table XLV. These figures represent for a channel depth of 28 feet the maximum stream flow or flood peak for March 26, 1913. 113. The combined watersheds of Miami and Stillwater Rivers above the junction of Mad River, is 1,808 sq. miles. The averaged rainfall adjusted to the watersheds for March 25, 1913 for the Miami and Stillwater valleys was 4.34 inches corresponding to 116.7 sec. feet per sq. mile. Assuming a combined run-off on the two watersheds of 90 per cent. of the recorded rainfall (105 sec. feet. per sq. mile), the improved channel will be required to carry below the safety...

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