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30-m Topographic Wetness Index

Published by National Park Service | Department of the Interior | Metadata Last Checked: June 25, 2025 | Last Modified: 2014-03-17
The lidar Topographic Wetness Index (TWI) is the TWI data product produced and distributed by the National Park Service, Great Smoky Mountains National Park. Concave, low gradient areas will gather water (low TWI values), whereas steep, convex areas will shed water (high TWI values). Values range range from less than 1 (dry cells) to greater than 20 (wet cells).

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Complete Metadata

@id http://datainventory.doi.gov/id/dataset/eaeea1dc323e1f3da58cd24ca00cd61b
bureauCode 
[
  "010:24"
]
dataQuality true
identifier NPS_DataStore_2208650
issued 2014-03-17T12:00:00Z
landingPage https://irma.nps.gov/DataStore/Reference/Profile/2208650
programCode 
[
  "010:118",
  "010:119"
]
references 
[
  "https://irma.nps.gov/DataStore/Reference/Profile/2208650"
]
spatial -84.02396,35.4183655,-82.99266,35.84451
theme 
[
  "Raster Dataset"
]

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