Mustofa, Riyadi2020-10-062020-10-062019-11978-60251349-1-3wahyu sari yenihttps://repository.unri.ac.id/handle/123456789/9865Koto Panjang Reservoir Water Floods in the catchment area of the Koto Panjang Reservoir become an annual problem in the wet season resulting in interrupted access between regions, lackclean water, and the emergence of various diseases. Floods carry loads of mud, sand and other waste due to erosion in the upstream area which causes sedimentation in the downstream area. Erosion and sedimentation that occur due to nature's ability to regulate water continue to decrease due to land conversion. The research objective is to compare the carrying capacity of environmental services based on ecosystem services water supply services with water regulation services during the period 2003, 2007, 2011, and 2015. The carrying capacity of environmental services based on ecosystem services has an important role in supporting the lives of humans and creatures other life. Carrying capacity is one of the load indicators to ensure that a policy plan and program meets the requirements of sustainable development. The analytical method used was Participatory Approaches and Expert Opinion arranged into a pairwise comparison matrix and continued with quantitative descriptive analysis, comparative description, and spatial analysis. The results of the analysis in 2015 showed that the carrying capacity of environmental services based on ecosystem services water supply services was 29.49 with criteria already exceeded and water management services amounted to 76.15 with criteria not yet exceeded.encarrying capacity capacityecosystem servicessupplywatercomparisonlong kotoArticle