Study Charge the Floods Evaluated From Morphometry and Mitigasi Arau Padang City

LUSI, UTAMA (2021) Study Charge the Floods Evaluated From Morphometry and Mitigasi Arau Padang City. Study Charge the Floods Evaluated From Morphometry and Mitigasi Arau Padang City.

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Abstract

High intensity rain and morphometri in Padang city cause at Arau. Morphometri geomorphologi that is related to wide of, river network, stream pattern and gradien of river. The form wide of DAS will be by stream pattern and level.This will influence to the number of rain. Make an index to closeness of stream depict closeness of river stream at one particular DAS. Speed of river stream influenced by storey, level steepness of river. Steepness storey, level is comparison of difference height of river downstream and upstream. Ever greater of steepness of river stream, excelsior speed of river stream that way on the contrary. High to lower speed of river stream influence occurence of floods, more than anything else if when influenced by debit big. By using rainfall from year 2005 to year 2015, and use Thiessen method got a rainfall. Use the DEM IFSAR, analysed sofware ARGIS, and with from earth map, the result got DAS in at condition of floods gristle and sedimentation. There are band evakuasi for resident which data in floods area.

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