Ramadan, A.N.A., Adidarma, W.K., Riyanto, B.A. and Windianita, K. 2018. Determination of hydrologic soil group for the calculation of floods At Upper Brantas Watershed. JURNAL SUMBER DAYA AIR. 13, 2 (Feb. 2018), 69–82. DOI:https://doi.org/10.32679/jsda.v13i2.205.