Baseflow index on Miu watershed based on a digital graphical method

Abstract

Baseflow is essential for water resource management in the dry season at the watershed scale. Management strategy water resources play a crucial role, especially those related to estimation efforts water supply, water quality management, water balance calculation, and strategy development of other water resources. This study aims to determine the value of baseflow using the Fixed Interval Method. This study used Hydro Office software with input daily discharge data from 2004 to 2013. The average baseflow value obtained was 5.53 m3/s, the process of calibrating by taking discharge data in the dry season, with no rainfall input. The BFI value obtained an average of 0. 9. This value indicates that the Miu watershed has high storage permeability characteristics. It indicates that the Miu watershed has a relatively stable flow during dry periods. The greater the BFI value, the better the water supply in a watershed.

Assessment of Surface Runoff Potency under Tropical Environment for Soil and Water Conservation Planning

“…TRO is the sum of DRO and BF. DRO only occurs during the rainy season with high monthly rainfall, so that during the dry season, river water discharge (TRO) only comes from BF [9]. The formula for calculating DRO, BF, and TRO are presented in Figure 2.…”

“…During the dry season, the water in the river comes from base flow which originates from the groundwater storage system. Groundwater recharge is very important to ensure the availability of river water discharge (based flow), especially during the dry season [9]. Soil and water conservation must be focused on efforts to optimize rain harvesting so that groundwater can be fully replenished.…”