Risk-Based River Management Case Study Of Pocong River Bangakalan Regency

Watershed (DAS) is a land area that includes rivers and their tributaries, which functions to accommodate, store, and channel rainwater to lakes or the sea naturally. In Bangkalan Regency, the Pocong River plays an important role in the local ecosystem. This river is used for various needs, such as irrigation, industry, and household consumption. The upstream part of the Pocong River, which is classified as class I, is used for drinking water and recreation, while the downstream part, in class II, is used for fish farming and crop irrigation. However, with increasing human activity, the water quality of the Pocong River has decreased due to pollution from domestic, agricultural, and industrial waste. Research using MIKE21 software will model the water quality in both parts of the river to provide an overview of the water quality conditions in the Pocong River. This study aims to model the quality of the upstream part of the Pocong River, class I and the downstream part, class II. The expected results of this study are to provide structured data and information regarding the water quality model of the Pocong River in the upstream and downstream parts.