International Journal of Scientific & Engineering Research, Volume 5, Issue 12, December-2014 154 ISSN 2229-5518 IJSER © 2014 http://www.ijser.org Alternative Management Plan for Flash Floods/ Flows of Mithawan Hill Torrents in Pakistan Zeshan Yasin 1 , Ghulam Nabi 2 Abstract— Water is a back bone not only for Agriculture but for every industry. One of the major sources of water is the Hill Torrents which emerges from the mountains and diverted towards Agriculture fields for irrigation. Due to steep gradient, flood flows with high velocity which results in damaging to standing crops, irrigation system, houses, roads and sometime human lives also. The flood of hill torrents having a lot of potential for agriculture to meet the shortage of food if manage wisely. Dera Ghazi Khan (D.G. Khan) hill torrent zone is one of the largest zone in Punjab province of Pakistan which emerge from mountains of Suleiman range. Mithawan Hill Torrent is one of the largest hill torrents of D.G. Khan Zone. Different options have been studied during this research to know that how the barren land will convert into lush green fields to meet the food requirements of the country. Peak discharge of Mithawan at Darraha was estimated 79,045 cusecs 1 at 25 year return period by interpolating rainfall data. The study includes detail analysis and investigations of four options for Mithawan Hill Torrent management. The 6000 cusecs discharge of Kachhi Canal is beneficial for the agriculture of Baluchistan province of Pakistan only if safe cross drainage structures will propose at the crossing of Mithawan Hill Torrent. Result of the study revealed that flow of Mithawan hill torrent can be managed through a number of ways. It is concluded that flow of Mithawan can be managed by a combination of reservoir and utilization in pachad 2 area (Option-4). Present study will be helpful in developing the Agro based community in the Hill torrents affected areas and for the design of cross-drainage structures & storage reservoir at different locations. Key Words— Agriculture, Pachad Area, HEC Geo-RAS, HEC-RAS, Alternative management plan, Arc-GIS, EAC 3 , Cross Section. ——————————  —————————— 1 It’s a unit of volume i.e. cubic feet per second 2 Area Irrigated with hill torrent water. 3 Elevation Area Capacity Curve 1-Research Associate, Centre of Excellence in Water Resources Engineering, University of Engineering and Technology, Lahore, Pakistan, zeeshi862@gmail.com, 92 300 4018638 2-Assistant Professor, Centre of Excellence in Water Resources Engineering, University of Engineering and Technology, Lahore, Pakistan, gnabi60@yahoo.com, 92 42 99250256-57 IJSER