Watershed Delineation
Delineate any watershed in India
Pick an outlet, snap it to the river network, delineate the catchment and read its area, flow path and basin characteristics.
Design Hydrology and Advanced Rainfall Analysis
National Institute of Hydrology, Roorkee
राष्ट्रीय जल विज्ञान संस्थान (एनआईएच), रूड़की द्वारा बाढ़ जल विज्ञान और वर्षा डेटा विश्लेषण हेतु विकसित वेब प्लेटफॉर्म।
NIH-DHAARA is an integrated web platform for design hydrology from rainfall to flood. Generate IDF curves, explore the PMP Atlas, run rainfall and flood frequency analysis, delineate watersheds, and compute design flood hydrographs using CWC sub-zonal methods - all in one place. Built for engineers, scientists, and planners who need fast, reliable, and consistent hydrological assessments.
Comprehensive suite of hydrological analysis tools
Tools marked Beta are released for testing and feedback. Their results should be independently verified before use in design.
Simple three-step process to get your results
Choose your area of interest by clicking on the map or entering coordinates.
Our system processes the hydrological data using advanced algorithms.
Download reports, charts, and data in various formats for your projects.
Short walkthroughs of each tool – from choosing the input to reading the report.
Pick an outlet, snap it to the river network, delineate the catchment and read its area, flow path and basin characteristics.
Choose a location, read rainfall intensities for any duration and return period, and export the curves and the report.
Upload a catchment boundary and extract grid-wise Probable Maximum Precipitation and Standard Project Storm values from the CWC-IMD atlases.