%0 Generic
%A Nasya Afra Rosalifa , 1814071059
%C UNIVERSITAS LAMPUNG
%D 2022
%F eprints:65675
%I FAKULTAS PERTANIAN
%T BULOK WATERSHED RIVER FLOW ANALYSIS USING SWAT (SOIL WATER ASSESSMENT TOOL) MODEL
%U http://digilib.unila.ac.id/65675/
%X Bulok watershed is one part of Sekampung watershed, land conversion that occurs in Bulok watershed effected the amount of critical land up to 23% of the total area and increased the amount of flow ratio. Flow analysis can be done using SWAT model. Using SWAT, the spatial data in the model could generate non spatial data such as simulated river flow. SWAT model relevance identified by the R2 and NSE. The study aims to analyze the river flow of Bulok watershed, to determine the parameter value that affects the river flow, and to examine the SWAT model performance in predicting the river flow. This study resulted the average observed river flow from 2016 to 2018 is 15,83 m3/s and the average river flow after calibration is 16,64 m3/s, the parameters that affected the river flow are groundwater flow factors (ALPHA_BF), groundwater “revap” coefficient (GW_REVAP), soil evaporation compensation factor (ESCO), plant uptake compensation factor (EPCO), main channel’s hydraulic conductivity (CH_K2), available water capacity of soil layer (SOL_AWC), manning’s value of the main channel (CH_N2), surface runoff lag coefficient (SURLAG) and manning’s value for overland flow (OV_N), and SWAT model could predict the river flow in Bulok watershed in satisfactory value where the calibration process using data from 2016-2018 obtained R2 0,78 and NSE 0,55 and validation process using data from 2019-2021 obtained R2 0,89 and NSE 0,64.  Keywords : Hydrological Model, SWAT, Calibration, Validation