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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.

The document describes a water resource systems model for the Apalachicola–Chattahoochee–Flint, Alabama–Coosa–Tallapoosa, and Tombigbee River basins. The model integrates electricity generation, agricultural, and municipal water use to assess impacts on streamflow and water temperatures, specifically addressing thermal pollution from power plant cooling. Validation against 1980–2010 data shows the model robustly represents monthly average streamflow and water temperatures.