http://iaeme.com/Home/journal/IJCIET 107 editor@iaeme.com International Journal of Civil Engineering and Technology (IJCIET) Volume 10, Issue 11, November 2019, pp. 107-112, Article ID: IJCIET_10_11_012 Available online at http://iaeme.com/Home/issue/IJCIET?Volume=10&Issue=11 ISSN Print: 0976-6308 and ISSN Online: 0976-6316 © IAEME Publication IMPLEMENTATION OF ARTIFICIAL STORAGE FOR FLOOD MANAGEMENT IN WELANG WATERSHED, PASURUAN DISTRICT Hendra Wahyudi and Edy Sumirman Lecturer at Civil Engineering and Planning Department, ITS, Surabaya, donesian In ABSTRACT Welang Watershed (DAS) based on Presidential Decree number 112 of 2012 is included in the Welang Rejoso River Basin and administratively this river is a cross river between Pasuruan City, Pasuruan Regency and Malang Regency so that the management of the Welang river becomes the authority of the Government of East Java Province The Welang River is a first order river with 21 tributaries having a total watershed area of 509.50 km2 and a length of approximately 53 km with the characteristic shape of the river meandering and the shape of the watershed widened in the upstream and topography so that it often causes flooding in the downstream area As a result, the existing transportation routes are often disrupted. The concept of handling floods that are environmentally friendly by storing them in the ground at a place called an aquifer by using the Artificial Storage Recharge (ASR) method what if this method is implemented to deal with floods that occur at welang times. The results show that the watershed watershed is possible to be overcome by using artificial recharge storage, but because the quality of the river water is polluted, it needs to be treated first before it is included as a source of artificial recharge storage water. Keywords: DAS Welang, Flood, ASR and polluted Cite this Article: Hendra Wahyudi, Edy Sumirman, Implementation of Artificial Storage for Flood Management in Welang Watershed, Pasuruan District. International Journal of Civil Engineering and Technology 10(11), 2019, pp. 107-112. http://iaeme.com/Home/issue/IJCIET?Volume=10&Issue=11 1. INTRODUCTION The paradigm for flood management that has been carried out is to drain rainwater into the sea as fast as possible. However, along with the increase in population and increasing water demand and during the dry season often there is a lack of water, the flood management paradigm that has been carried out needs to be done by maintaining the hydrological conditions of the developed area by increasing the intensity of infiltration, filtering, storage,