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- Normalized Difference Water Index (NDWI)
Normalized Difference Water Index (NDWI)
- Description:
The NDWI index for assessing risk of fire is used to determine the presence of moisture in vegetation cover. Higher NDWI values indicate sufficient moisture, while a low value indicates water stress. The NDWI product is dimensionless and varies from -1 to +1, depending on the hardwood content, as well as the type of vegetation and cover. The high NDWI values (in blue) correspond to high plant water content and coating of high plant fraction. During periods of water stress the NDWI rate will decrease.
A Normalized Difference Vegetation Index (NDVI) was applied to the source Landsat 8 imagery (path/row = 042/036) captured on 10-14-2020 downloaded via the USGS Earth Explorer. NDWI=(Green-NearIR)/(Green+NearIR).
- Data Provided By:
- CBI
- Content date:
- October 2020
- Spatial Resolution:
- 30 (Meter)
- Contact Organization:
- Conservation Biology Institute
- Contact Person(s):
Zac Canter
- Use Constraints:
- This dataset is licensed under the Creative Commons Attribution-NonCommercial 3.0 License and is available to the public for non-commercial access and use. Attribution is required for redistribution in any medium or format. CBI makes no warranties either expressed or implied with respect to datasets made available for public distribution.
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