# Generated by scripts/sync_indices.py from Awesome Spectral Indices (MIT).
# DO NOT EDIT BY HAND. Edit overlays (_asi_*.yaml, _folia_*.yaml) and re-run.
# Spec: docs/spec/SPECTRAL_INDICES.md
slug: fwei
name: Flood/Water Extraction Index
short_name: FWEI
formula: (((B + G + R) / 3.0) - N)/(((B + G + R) / 3.0) + N)
bands:
- B
- G
- R
- N
domain: water
theme: hydrology
concepts: []
rank: null
display:
  colormap: brbg
  range:
  - -1.0
  - 1.0
references:
- url: https://doi.org/10.1007/s00477-024-02660-z
date_of_addition: '2025-04-15'
contributor: https://github.com/kalab-oto
platforms:
- Sentinel-2
- Landsat-OLI
- Landsat-TM
- Landsat-ETM+
- MODIS
- Planet-Fusion
source:
  authority: awesome-spectral-indices
  commit_sha: 7f28d3fe68af1287f7449faf0685659e73197212
  upstream_id: FWEI
match_tags:
- b
- extraction
- flood
- g
- index
- n
- r
- water
status: stable