NDWI Water Body Mapping

Map water bodies using Normalized Difference Water Index from Sentinel-2.

Pipeline (1 steps)

Map water bodies using Normalized Difference Water Index from Sentinel-2.

Datasets

sentinel2-l2a

AOI modes

adminassetdraw

Simulated previewPaste the script in Earth Engine for live results

Outputs the script produces

map Map layers

map Area statistics

map Export GeoTIFF

Open Code Editor ↗

ndwi-water.js · 7 lines

// NDWI Water Body Mapping
var s2 = ee.ImageCollection('COPERNICUS/S2_SR_HARMONIZED')
  .filterDate(startDate, endDate).filterBounds(aoi)
  .filter(ee.Filter.lt('CLOUDY_PIXEL_PERCENTAGE',20)).median();
var ndwi = s2.normalizedDifference(['B3','B8']).rename('NDWI');
var water = ndwi.gt(0.0);
var result = ndwi;

ndwi-water.py · 8 lines

# NDWI Water Body Mapping
import ee, geemap
s2 = (ee.ImageCollection('COPERNICUS/S2_SR_HARMONIZED')
  .filterDate(start_date, end_date).filterBounds(aoi)
  .filter(ee.Filter.lt('CLOUDY_PIXEL_PERCENTAGE',20)).median())
ndwi = s2.normalizedDifference(['B3','B8']).rename('NDWI')
water = ndwi.gt(0.0)
result = ndwi

#NDWI#water#Sentinel-2#mapping