Search Climate Insights Directory

The study addresses the lack of hydrological monitoring in the tributaries of Cambodia's Tonle Sap Lake, which contribute 25–30% of the annual flow and are critical for maintaining dry-season lake levels. It aims to simulate baseline flows and project future climate change impacts across 11 sub-basins to support water resource management in a country where 80% of the population depends on agriculture.

The document details the application of the Water Evaluation And Planning (WEAP) system to model the La Vieja river basin, covering an area of approximately 2,880 km2 across the departments of Quindío, Valle del Cauca, and Risaralda. The model incorporates 37 watercourses, 16 human consumption demands, and 4 hydroelectric demands. By utilizing a soil moisture rain-runoff method and calibrating parameters such as runoff resistance and hydraulic conductivity, the project established a framework to evaluate 1,728 scenarios involving climate variability and demographic changes. This process aims to support regional environmental authorities in formulating adaptation strategies for water resource planning through 2050.