Baseflow Index Analysis for Bengawan Solo River, Indonesia

Hydrological investigation for major Java rivers remains research challenge todays, particularly in identification of runoff characteristics situated monsoonal climate. This study aims to investigate the value baseflow index Bengawan Solo river. We employed daily streamflow data period 1980-2010 derive (BFI) based on smoothed minima. utilized different approaches comprising non-overlapping 3 days (BFI3), 5 (BFI5), and 7 (BFI7) compute index. found average BFI3, BFI5, BFI7 this are 0.67, 0.56, 0.49, respectively. It revealed that higher number would produce lower BFI, which could be an indication less contribution total streamflow. Additionally, our findings show there is increasing trend BFI last decade may associated with decreasing forest cover catchment area. Furthermore, will provide a valuable information key leader water sector particular during dry season, further needed integrate into sustainable management