Surface Water Resources Allocation Under Expansion Of Irrigation Using Weap Model

Abstract

The Increasing Need For Water Resources, Driven By Various Factors Such As Water Projects, Population Growth, Urbanization, And Industrialization, Has Strained Existing Water Supplies. This Has Led To Overexploitation Of River Systems And Ecosystems Due To The Rise In Irrigation Areas. A Crucial Water Allocation Study Was Necessary To Maintain Ecosystem Integrity And Balance Water Supply And Demand In The Area. Data On Hydrology, Meteorology, And Irrigation Supply Were Analyzed Statistically To Feed Into A Model. Corrected Meteorological And Climatic Data Were Correlated Using Multi-Regression And Distribution Mapping Methods. The Study Compared Water Demand And Supply For Both Current And Future Development Activities Under Irrigation Expansion Scenario. The Thesis First Examined Model Calibration, Validation, And Statistical Measures, Showing That The Model Performed Well In Simulating Both Current And Future Scenarios. The Research Aimed To Establish A Sustainable Surface Water Allocation For The Expanding Irrigation Activities Around The Koka Reservoir, Using The Water Evaluation And Planning (Weap) Model As A Decision-Making Tool To Ensure Social, Economic, And Environmental Benefits. The Weap Model, Known Globally For Its Effectiveness In Addressing Water Management Challenges, Was Used To Analyze Current Water Supply-Demand Dynamics And Develop Future Scenarios. The Findings Revealed Unmet Water Demands In The Reference Scenario For The Current Year (1990), With An Annual Demand Of 39.9 Mm3. Under The Expansion Of Irrigation Scenario (2016???2035), The Total Irrigation Water Requirement Surged To788 Mm3, With An Unmet Demand Of 66 Mm3. This Study Evaluated Water Scarcity In A Basin Undergoing Irrigation Expansion To Ensure Future Water Availability. It Emphasized The Importance Of Enhancing Integrated Water Management To Address Water Shortages During Droughts. Additionally, The Research Aimed To Create A Water Allocation Model That Distributes Water Resources To Sectors Based On Economics For Maximum Benefits.