River basin and Sub-basin

The River Basin and Sub-basin datasets, part of the CoRE Stack, delineate hierarchical hydrological units derived from terrain and drainage analysis. The River Basin dataset defines major basin boundaries across India for large-scale water resource planning, while the Sub-basin dataset subdivides these basins into smaller hydrological units to support intermediate-scale watershed management and landscape assessment. Together, they provide a structured framework for basin-to-watershed hydrological planning.

About Dataset

The River Basin and Sub-basin datasets are key hydrological boundary layers within the CoRE Stack (Commoning for Resilience and Equality), derived from digital elevation models and drainage network analysis. The River Basin dataset delineates major surface water catchment areas across India, forming the highest-level hydrological unit for integrated water resource management, large-scale hydrological modeling, and ecosystem monitoring. The Sub-basin dataset subdivides these major basins into smaller, terrain-driven catchment units that represent natural runoff convergence zones, supporting assessments of hydrological connectivity, water balance, and land–water interactions. Together, these datasets provide a nested hydrological framework essential for participatory watershed planning, ecosystem restoration, and multi-scale landscape analysis within the CoRE Stack.

Technical details and methodologies are available in the CoRE Stack Technical Manual: https://core-stack.org/core-stack-technical-manual-v2/

Purpose of Dataset

The Purpose Of The River Basin And Sub-basin Datasets Is To Provide Hierarchical Hydrological Boundaries For Multi-scale Water Resource And Watershed Planning Within The Core Stack. The River Basin Dataset Defines Major Surface Water Catchment Areas For Basin-scale Hydrological Modeling, Integrated Water Management, And Ecosystem Monitoring. The Sub-basin Dataset Further Divides These Basins Into Smaller Hydrological Units, Supporting Analysis Of Runoff Patterns, Water Balance, And Connectivity For Targeted Watershed Planning And Ecosystem Restoration. Together, They Enable Comprehensive, Data-driven Assessment Of Water Systems And Sustainable Land And Water Management.