Irrigation Network Regulation through CAD System

Abstract

The irrigation system of Pakistan is the largest integrated network in the world. There are 3 major storage reservoirs, 19 barrages, 12 inter-river link canals, 45 independent irrigation canal commands and over 1,22,268 watercourses. The network of irrigation of the province of Sindh consists of 3 barrages and 14 canal commands. The irrigation water is being used for agricultural, industrial and domestic purposes. Owing to mismanagement and inequitable distribution of water, it is necessary to have a fool-proof system where water is supplied to the end-users judiciously. Therefore water managers and farmers cannot know, how much quantum of water has been in and out flowing from regulators and outlets of main and branch canals, distributaries/ and minors. In current time marvelous developments have been done through microcomputer in the modern technology in all fields especially in the developed and generally in developing countries. The computer model on database has been developed on Potho minor, which off takes from West Branch Jamrao Canal for equitable and reliable distribution of water in the command area of minor. Software of computer was developed to determine inflow, and outflow and losses of water in minor and also water balance. The computer model shows that each watercourse receives either design discharge, less than design or more than design discharge. This is very important for the Area Water Boards (AWBs), water managers, Farmers Organizations (FOs), farmers and other stakeholders to make familiar with distribution of water in the commanded area of the channel.