Computing Flood Volume of Dikpe Catchment using HEC-HMS

Computing Flood Volume of Dikpe Catchment using HEC-HMS

Article ID

79YZ3

, ,

Computing Flood Volume of Dikpe Catchment using HEC-HMS

Yaw Danquah Twumasi Wa Polytechnic

Rev. John Ayer

Edward Mathew Osei Jnr.

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Abstract

Understanding the basic relationships between rainfall and runoff is vital for effective management of flood water. The Lawra District of the Upper West Region, the driest region in Ghana, has experienced periodic and devastating flash floods resulting from high intensity short duration rainfall, a characteristic of semi-arid and arid regions. However all these go waste leading to lack of water during the long dry season. Many methodologies have been applied such as using Digital Elevation Model (DEM) for hydrological modelling and watershed delineation. In this work delineated catchment area computed is used in HEC-HMS for flood volume computation. Annual rainfall for 2009 (a flood year) of 1178.38mm (46.393in) gives a runoff of 1.134m (44.652in) and a volume of 36,065,515.893m3. However a volume of 31,313,221.5m3 was obtained for August, September and October (months with heaviest rainfall) alone. Lumped Hydrological modelling with remote sensing data and GIS techniques for flood volume computation is possible using temperature, rainfall and flow rates values.

Computing Flood Volume of Dikpe Catchment using HEC-HMS

Authors

Yaw Danquah Twumasi Wa Polytechnic

Rev. John Ayer

Edward Mathew Osei Jnr.

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How to Cite

Yaw Danquah Twumasi. 2015. “. Global Journal of Human-Social Science – B: Geography, Environmental Science & Disaster Management GJHSS-B Volume 15 (GJHSS Volume 15 Issue B2): .

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Journal Specifications

Crossref Journal DOI 10.17406/GJHSS

Print ISSN 0975-587X

e-ISSN 2249-460X

GJHSS Volume 15 Issue B2
Pg. 9- 15

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Classification

GJHSS-B Classification: FOR Code: 059999

Submission Received September 10, 2015
Accepted October 2, 2015
Published October 15, 2015

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Article Matrices

Total Score: 103

Country: Ghana

Subject: Global Journal of Human-Social Science - B: Geography, Environmental Science & Disaster Management

Authors: Yaw Danquah Twumasi, Rev. John Ayer, Edward Mathew Osei Jnr. (PhD/Dr. count: 0)

View Count (all-time): 111

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Publish Date: 2015 04, Wed

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Total Views: 4152

Total Downloads: 2093

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