Estimation of Sediment Yield in Madawaki Watershed Using GeoWEPP Model

Erosion is a recurrent challenge in the Madawaki watershed widely affecting farming techniques, water quality, and soil fertility. The study portrays a novel use of geographical interface of the WEPP (Water Erosion Prediction Project) model, known as GeoWEPP to estimate sediment yield in the unique agro-ecological region. Leveraging ArcGIS 10.2, detailed maps were generated to support the modeling process, signifying a high-resolution analysis of the watershed activities.The result shows an average annual sediment yield of 219 ton/ha. Among the evaluated management practice, forest perennial emerged as the most effective in reducing the sediment yield by 78.3% (47.6 tons/ha). The analysis contains a critical idea into the efficacy of GeoWEPP model in estimating and managing watershed challenges. By showing the model ability to integrate GIS mapping techniques and assess forest perennials as a sustainable management practice. It also offers an important advancement in soil and water conservation strategies. These findings proffer critical gaps in sediment yield estimation and watershed management, demonstrating the study to be a valuable contribution to the field of watershed development planning.