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DTIC ADA1020160: Effects of Flood Plain Encroachments on Peak Flow, |
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by Defense Technical Information Center |
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When land development encroachments into river flood |
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plains are permitted, the magnitude of the flood peak |
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discharge will be increased due to removal of flood plain |
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storage. When the flood plain encroachment is limited |
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(for example, when no more than one foot of water surface |
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rise is permitted), the study results indicate that the |
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increase in the flood peak is usually relatively small; |
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it is generally less than 10 percent. The arrival time of |
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the flood peak can be affected to a much greater extent, |
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and in stream systems with significant tributary flows, |
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consideration must be given to the effects of |
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encroachments on the coinciding of the flood peaks. |
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Various hydrograph shapes and mean river slopes were used |
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in the investigation of encroachment effects. Both |
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unsteady flow simulations and steady flow profile |
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calculations with hydrologic routing were used in the |
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analyses. (Author) |
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Date Published: 2019-12-14 10:30:57 |
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Identifier: DTIC_ADA1020160 |
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Item Size: 53255260 |
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Language: english |
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Media Type: texts |
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# Topics |
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DTIC Archive; DeVries,J J ; HYDROLOG... |
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