The declination of environmental quality triggers several harmful impacts on society, such as the increasing of water-borne diseases, low quality of health, and lousy habitat ecosystem. The research aims to conduct a vulnerability assessment method of a watershed and to perform stormwater management to increase the catchment performance due to dynamic changes. The observation focused on Sugutamu sub-catchment, Depok, West Java. The evaluation includes sub-watershed map compilation, impervious cover calculation, river assessment, and restoration capacity evaluation. The result indicates that the sub-catchment describes as restorable non-supporting sub-watershed. There are three main regions in the sub-catchment. These areas have a percentage of impervious cover 95.6%, 72.5%, and 38.5%, respectively. Also, according to the future impervious cover prediction, these areas will have 97.8%, 95.3%, and 97.5%, respectively. The paper used the National Stormwater Calculator and EPA SWMM 5.1 software to visualize and to predict the future condition of sub-watershed with the various scenario. The application of low impact development (LID) in the research area declines the level of runoff, enhances the level of infiltration, and reduces the peak discharge. The research concludes that watershed vulnerability assessment, along with stormwater management, could control flooding in urban areas.

环境质量的下降会引发对社会的多种有害影响，例如水传播疾病的增加、健康质量低下和栖息地生态系统的恶化。该研究旨在对流域进行脆弱性评估方法并进行雨水管理，以提高因动态变化而产生的集水性能。观察集中在西爪哇德波的 Sugutamu 子集水区。评价内容包括子流域地图编制、不透水盖度计算、河流评价和恢复能力评价。结果表明子汇水面积描述为可恢复的非支撑子流域。子流域内有三个主要区域。这些区域的不透水覆盖率分别为 95.6%、72.5% 和 38.5%。还，根据未来的不透水覆盖率预测，这些区域将分别有 97.8%、95.3% 和 97.5%。本文使用 National Stormwater Calculator 和 EPA SWMM 5.1 软件来可视化和预测具有各种情景的子流域的未来状况。研究区低影响开发（LID）的应用降低了径流水平，提高了入渗水平，降低了峰值流量。该研究得出结论，流域脆弱性评估以及雨水管理可以控制城市地区的洪水。研究区低影响开发（LID）的应用降低了径流水平，提高了入渗水平，降低了峰值流量。该研究得出结论，流域脆弱性评估以及雨水管理可以控制城市地区的洪水。研究区低影响开发（LID）的应用降低了径流水平，提高了入渗水平，降低了峰值流量。该研究得出结论，流域脆弱性评估以及雨水管理可以控制城市地区的洪水。