This study investigates the application of the TNFD (Task Force on Nature-related Financial Disclosures) framework within the context of South Korea, with a particularfocus on how businesses can evaluate their environmental dependencies and impacts, especially in relation to water resource vulnerabilities. Utilizing the LEAP (Locate, Evaluate, Assess, Prepare) approach, the research employs national data systems to conduct a thorough, data-driven risk assessment. The results underscore the value of leveraging domestic data sources, identifying regions like Idong-myeon and Gwanin-myeon as being highly susceptible to prolonged drought risks. In contrast, areas such as Seondang-dong, Soheul-eup, Pocheon-dong, Gasan-myeon, Gunnae-myeon, and Naechon-myeon face heightened risks from flooding. The study highlights that adopting a data-driven methodology allows businesses to better evaluate and address nature-related risks, ultimately supporting more accurate and sustainable decision-making processes. Through this approach, companies can develop more resilient strategies to mitigate the impacts of climate change and ensure long-term sustainability.