Kusuma, Desi Widia2020-10-062020-10-062019-11978-60251349-1-3wahyu sari yenihttps://repository.unri.ac.id/handle/123456789/9863Alahan Panjang-Pasar Baru Road development plan connecting Solok Regency and Pesisir Selatan Regency, West Sumatra Province. The road crosses the Tarusan Arau Hilir Wildlife Sanctuary Area within the Bayang watershed. To anticipate the negative impacts of road development on the Bayang Watershed, research is aimed at analyzing the biophysical characteristics of the Bayang Watershed and its carrying capacity and management efforts. The analysis was conducted by reviewing documents and biophysical studies and collecting climate, debit and critical land data. The results showed that very heavy erosion (9,682.34 ha) was in the upper and middle watersheds. Potentially critical land is 33.4% of the watershed area, rather critical land is identified as 17.6% and the location is spread upstream and middle of the watershed. To minimize negative impacts, road construction must consider the principles of sustainable road development called also with the green road that is movement, ecology and community.enBiophisical CharacteristicBayang WatershedAlahan Panjang-Pasar Baru RoadErotionCritical LandArticle