Height Above Nearest Drainage (HAND) is a terrain model that normalizes topography to the relative heights along the drainage network and is used to describe the relative soil gravitational potentials or the local drainage potentials. Each pixel value represents the vertical distance in meters to the nearest drainage.

Learn how to use HAND data in this Global 30-m HAND tutorial.

This tutorial is part of a StoryMap series that details ASF DAAC's InSAR on Demand services offered by NASA’s Alaska Satellite Facility Distributed Active Archive Center (ASF DAAC). 

Related tutorials include the following:

• Introduction to Vertex On Demand
• RTC On Demand
• InSAR On Demand
• InSAR Water Masking
• Reclassify RTC Tool
• Log Difference Tool
• Scale Conversion Tool
• OPERA Sentinel-1 RTC
• Change Detection using OPERA RTC-S1
• Working with S-1 Burst products
• Global Seasonal S-1 Interferometric Coherence and Backscatter Dataset
• Work with NISAR Sample Data