由於順向坡災害有規模大及發生快速之特性，經常造成嚴重生命財產損失，加上近年來極端氣候下引致高頻率強降雨，順向坡滑動之災害風險亦隨之提高。臺北市政府積極對山坡地邊坡進行安全預警及管理，以達降低坡地災害發生之目的。由於地下水常是大規模崩塌地的主要致災因子，對於邊坡穩定性影響甚大，本文彙整大地處近年來增設自動化與自記式水位計觀測資料，選擇一處順向坡以無限邊坡理論、有限元素法、線性水庫等模式，進行地下水位監測警戒值研究。

Due to the large scale and rapid occurrence of dip slope disasters, it often causes serious loss of life and property. Addition, in recent years, extreme weather has caused high frequency and heavy rainfall, and the disaster risk of dip slope sliding has also increased. The Taipei City Government actively conducts safety warnings and management of slopes to reduce the occurrence of sloping disasters. Since groundwater is often the main hazard factor for large-scale collapses, it has a great impact on the slope stability. This paper collects the monitoring data of automatic and self-recording water level gauges added in recent years in the large land, and selects a case slope to use the infinite slope theory, Finite element method, linear reservoir and other models are used to study the monitoring alert value of groundwater level monitoring.