NDWI Algorithm

The Normalized Difference Water Index (NDWI) monitors water. Greater values generally indicate higher probability of water. The range is [-1,1].

• NDWI—A normalized difference water index for remote sensing of vegetation liquid water from space
• Modification of normalised difference water index (NDWI) to enhance open water features in remotely sensed imagery
• Normalized difference water index for remote sensing of vegetation liquid water from space

A repository of Landsat data that contains Landsat 8 that contains broad land coverage and contains the green and NIR bands necessary to calculate NDWI.

DCAL Spectral Products contains blocks to calculate NDWI

Link to hub