Development of One Day Probable Maximum Precipitation (PMP) and Isohyetal Map for Bale Zone, Oromiya Region, Ethiopia

Asrat Fikre


Effective use of land and water is fundamental to growth and sustainable development, however uncontrollable amounts of water can adversely affect the survival of living things. Development of one day probable maximum precipitation and isohyetal map for bale zone using daily extreme values of 18 stations by statistical method to estimate point PMP and to develop one day PMP isohyetal map has been developed.  Missing data were reconstructed and inconsistency was checked using inverse distance weighing and double mass curve analysis, respectively. Frequency factor values varied from 2.24 to 5.09 and PMP varied from 51.43mm to 234.81mm with an average 118.92mm. Using Arc GIS interpolation approach PMP grid values were varied 80.0- 180.0 mm.

Keywords: Extreme rain fall, Flood, PMP, Isohyetal map

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ISSN (Paper)2224-5790 ISSN (Online)2225-0514

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