1. Analysis of Elevation Data
2. Hydrology Analysis (Creating River network and Watershed)

A. Data Preparation
Download data for the region of interest
(Check this video:    • Downloading DEM of desired area from ...  )
Merge (Mosaick)
Clip (By polygon)
Warp (Reproject)

B. Analysis of Elevation Data
Slope
Aspect
Hillshade
Plan Curvature
Profile Curvature
Reclassification
C. Hydrology Analysis
Creation of river network and watershed
Creation of watershed for given output (pour point)