A watershed refers to the area of land where all of the water that is under it or drains off of it goes into the same place. It's like a natural boundary; when rain falls or snow melts, the water follows gravity and flows downhill, eventually joining rivers, streams, lakes, or oceans. These bodies of water are often interconnected, forming a network within a watershed. They play a crucial role in supplying water for human use, supporting ecosystems, and regulating the flow of water throughout regions.
Watershed delineation is the process of identifying and mapping the boundaries of a watershed. This involves analyzing terrain, topography, and hydrological data to determine the area of land that contributes runoff water to a particular point, such as a stream, river, or lake.
Various methods, including geographic information systems (GIS), remote sensing, and mathematical modeling, are employed to delineate watersheds. The process typically involves identifying high points (ridges or divides) where water flows in different directions and delineating the area that drains into a specific outlet or water body. Watershed delineation is crucial for understanding water resources, managing land use, and implementing effective water management and conservation strategies.
Негізгі бет Watershed Delineation using ArcGIS | Hydrology Analysis
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