Prediction Of Runoff And Sediment Yield From Agricultural Watersheds Using Annagnps: A Case Study Of Upper Ebonyi River Watershed, Enugu State.

Abstract Sediments resulting from soil erosion are the major non-point source pollutant of surface waters in agricultural watersheds. Annualized Agricultural Non-Point Source Pollution Model (AnnAGNPS) is a computer-based watershed model that predicts non-point source pollutants and runoff loadings within agricultural watersheds. AnnAGNPS v5.2 was used in conjunction with Arcview 3.2 GIS to predict streamflow and sediment discharges from a 250.89 ha agricultural watershed, Upper Ebonyi River watershed, located at Obollo-Etiti in Udenu Local Government Area in Enugu State, South-eastern Nigeri…