Phase 3 • Terrain & Hydrology
Terrain Relief & Drainage Analysis
NASADEM ~30m elevation relief, slope gradient, and PySheds flow accumulation modeling.
Preliminary Indicator:
DEM flow accumulation indicates topographic gathering potential, not confirmed subsurface waterlogging. Actual drainage depends on farm drains, infiltration rate, and soil permeability.
Mean Elevation
-- m MSL
Relief Range:--
Average Slope
-- degrees
Class:--
Dominant Aspect
--
Solar Exposure:South-West Monsoon Facing
Topographic Wetness (TWI)
--
Swale Index:Moderate Accumulation
Hydrological Drainage Assessment
Recommended Farm Conservation Measures:
- Maintain contour bunding or vegetative grass strips along slopes >4° to mitigate topsoil erosion.
- Keep natural drainage swales unobstructed to prevent water stagnation in banana/pepper plots.
- On sloping lateritic valley terrains, preserve deep-rooted perimeter trees and terrace bunds to prevent localized topsoil washouts during high-intensity monsoon showers.
Ground-Truth Calibration
Farmers can mark known waterlogging locations from on-field experience to validate and calibrate the DEM flow accumulation models.
Observed Waterlogging:No Waterlogging Reported