⚠️ Why standard GIS routing (D8, Sink Fill) fails in complex mining regions: 300m open pits become fake "lakes", and underground river tunnels are completely ignored.
To map surface drainage across central Kryvyi Rih, I built a custom DEM hydro-conditioning pipeline:
🔹 Selective sink filtering (true pits vs DEM noise)
🔹 Subsurface conduit burn-in (diversion tunnels)
🔹 Closed micro-catchment delineation
Crucial for geochemical transport & geotechnical risks.
🛠️ #RStats (#terra, #Rsagacmd), #QGIS, #SAGAGIS
#GIS #Hydrology #HydroEnforcement #FOSSGIS #Mining #Geospatial #KryvyiRih #DigitalTerrainAnalysis