本文介绍对越南西北部一个岩溶山地流域——Suoi Muoi河流域水文地质特征的初步评价。该流域海拔600～1700m,面积284km~2。出露的石灰岩占整个流域面积的32％。对该流域已进行了各种类型的评价,包括野外地质和水文地质调查、溶洞调查、染色示踪试验、气象和地表水监测等。通过地质研究和溶洞调查在该流域内识别出了主要的活动溶洞/通道系统。尽管这些数据很重要,但据此还不足以对该流域作一个全面的评价。笔者试图根据短期(15个月)的气 This article presents a preliminary assessment of the hydrogeological features of the Sui Muoi River Basin, a karst mountain valley in northwestern Vietnam. The basin is 600 ~ 1700m above sea level with an area of ​​284km ~ 2. Exposed limestone accounts for 32% of the entire basin area. Various types of assessments have been conducted on the basin, including field geology and hydrogeology surveys, cave surveys, dye tracing tests, meteorological and surface water monitoring. The main activity cave / tunnel system has been identified in the basin through geological studies and cave surveys. Although these data are important, they are not enough to give a comprehensive assessment of the basin. The author tried to base on short-term (15 months) gas