hydrology-pysheds

What problem does it solve?

This Skill turns a Digital Elevation Model (DEM) into hydrological products like conditioned terrain, flow direction, flow accumulation, stream networks, and watershed boundaries, removing the need for manual GIS hydrology setup.

Core Features & Use Cases

• DEM conditioning: fills pits, depressions, and resolves flats to produce a hydrologically correct surface for analysis.
• Flow modeling on rasters: derives D8 flow direction and upstream contributing area via flow accumulation to support stream extraction.
• Watershed delineation & runoff estimation: delineates catchments from a snapped pour point and estimates direct runoff using the SCS Curve Number method.
• Use Case: you have a region’s DEM and a chosen outlet point, and you need the drainage area, stream network extent at a threshold, and an initial runoff depth estimate for hydrologic planning.

Quick Start

Tell the AI: “Using my DEM GeoTIFF, compute pit-filled/conditioned elevation, D8 flow direction, flow accumulation, extract a stream network by threshold, snap my pour point to the nearest stream cell, delineate the watershed polygon, and estimate runoff depth with the SCS Curve Number method.”