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LEAN-Corrected DEM for Suisun Marsh

Dates

Publication Date
Time Period
2018
Revision
2019-07-24

Citation

Buffington, K.J., Thorne, K.M., Takekawa, J.Y., Chappell, S., Swift, T., Feldheim, C., Squellati, A., and Mardock, D.K., 2019, LEAN-Corrected DEM for Suisun Marsh: U.S. Geological Survey data release, https://doi.org/10.5066/P97R4ES3.

Summary

Lidar-derived digital elevation models often contain a vertical bias due to vegetation. In areas with tidal influence the amount of bias can be ecologically significant, for example, by decreasing the expected inundation frequency. We generated a corrected digital elevation mode (DEM) for Suisun marsh using a modification of the Lidar Elevation Adjustment with NDVI (LEAN) technique (Buffington et al. 2016). GPS survey data (6912 points, collected across public and private land in 2018), Normalized Difference Vegetation Index (NDVI) derived from an airborne multispectral image (June 2018), a 1 m lidar DEM from September 2018, and a 1 m canopy surface model were used to generate models of predicted bias across the study domain. Due to [...]

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Attached Files

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SuisunMarsh_2018_LEAN_DEM_1m_mm_USGS.tif 946.19 MB image/geotiff
Extension: SuisunDEM_5m_SD.zip
thumbnail.png thumbnail 442 Bytes

Purpose

The lean-corrected DEM is appropriate for use in vegetated wetlands. Urban areas and non-vegetated hard surfaces may have a lower elevation than reality due to the LEAN correction.

Rights

The authors of these data require that data users contact them regarding intended use and to assist with understanding limitations and interpretation. Unless otherwise stated, all data, metadata and related materials are considered to satisfy the quality standards relative to the purpose for which the data were collected. Although these data and associated metadata have been reviewed for accuracy and completeness and approved for release by the U.S. Geological Survey (USGS), no warranty expressed or implied is made regarding the display or utility of the data on any other system or for general or scientific purposes, nor shall the act of distribution constitute any such warranty. Any use of trade, firm, or product names is for descriptive purposes only and does not imply endorsement by the U.S. Government.
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Map

Spatial Services

ArcGIS Mapping Service

WMS Service

Communities

  • National and Regional Climate Adaptation Science Centers
  • Southwest CASC
  • USGS Data Release Products
  • USGS Western Ecological Research Center

Associated Items

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Additional Information

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Type Scheme Key
DOI https://www.sciencebase.gov/vocab/category/item/identifier doi:10.5066/P97R4ES3

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