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The Application of LiDAR to Watershed Management on the White Mountain National Forest
Landon GryczkowskiHydrologist, White Mountain National Forest
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Overview
• What is LiDAR and why is it so cool?
• LiDAR status in NH• Current
applications• Planned,
near-future applications
• Future applications
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What is LiDAR?
• Light Detection and Ranging
• Optical remote sensing technique using lasers
• Produces mass point cloud datasets
http://desktop.arcgis.com/en/arcmap/10.3/manage-data/las-dataset/what-is-lidar-data-.htm
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Why is LiDAR so cool?
• Map top of tree canopy
• Map ground surface elevation
• Actual measurements of ground surface
• High resolution• Repeated
measurements
NYC point cloud. Credit: Jarlath O'Neil-Dunne; UVM-SAL
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Current Applications
• Updating the Watershed Boundary Dataset (WBD)
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Current Applications
• Delineating HUC-14 and HUC-16 watersheds
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Current Applications
• Updating the National Hydrography Dataset (NHD) flowlines
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Current Applications
• Forest-wide soil mapping and Terrestrial Ecological Unit (TEU) mapping
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Planned Applications
• Mapping potential vernal pools
Photos: UNH Cooperative Extension
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Planned Applications
• Flood hazard analysis at campgrounds near rivers
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Planned Applications
• Floodplain delineation
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Planned Applications
• Rating curve generation at new streamflow gaging stations
Credit: Christopher Goodell, WEST Consultants
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Planned Applications
• Identifying straightened stream reaches
Photo: Nash Stream, Coos County, NH. Credit: Trout Unlimited, http://www.tu.org/tu-projects/nash-stream
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Future Applications
• Stream and riparian characterization
• Advanced vegetation analysis
• Pair with multi- and/or hyper-spectral imagery to map to species
• Quantify landscape changes over time
• Disturbance mapping• ???
Kelly M, Di Tommaso S. 2015. Mapping forests with Lidar provides flexible, accurate data with many uses. Calif Agr 69(1):14-20. DOI: 10.3733/ca.v069n01p14
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Questions?
Photo credit: John Anderson, 2013 WMNF Artist-in-Residence Program