This study proposed a workflow that integrated site-specific observations and numerical models to manage high-risk slopes. The workflow first evaluated slope failure potential based on available observations (e.g.,protected objects, failure precursor, and the completeness of site-specific data) and identified four high-risk slopes in the Taipei City area. This study then employed two-dimensional coupled hydromechanical model to assess the thresholds of slope failure. The influential factors for slope stability in simulations included the rainfall patterns, variations
in groundwater, and geological models based on available data. To verify the hydromechanical model, site-specific
observations were used, and the slope failure thresholds for each site were obtained accordingly. Simulation results
showed that the effects of rainfall and groundwater on slope stability were critical indicators of hazardous slopes. In
the future, the proposed workflow could be a reference for creating efficient warning systems and implementing effective measures at potential hazardous slope sites.
Key Wrds: Slope stability, slope failure, hydromechanical model, groundwater level, rainfall pattern