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West Swanzey, NH: Geomorphic Response to Dam Removal, Ashuelot River(2011)


Overview: NCALM Seed. PI: John Gartner, Dartmouth College. The survey area covers a 45 square kilometers along the Ashelot River, south of Keene and crossing West Swanzey, New Hampshire. Data were collected to quantify the geomorphic and sedimentological responses to dam removal.
Platform: Airborne LiDAR |Survey Date: 07/20/2011 |Survey Area: 45 km2 |Point Density: 11.91 pts/m2
Full Metadata |Dataset Acknowledgement |Funder:   NSF |Collector:   NCALM
Select Data Product:
Point Cloud Download & Processing |Point Cloud Bulk Download (Requires login)

1a. Select area of data to download or process:   

Horizontal Coordinates: UTM z18 N NAD83 (CORS96) [EPSG: 26918]  -  Vertical Coordinates: NAVD88 (GEOID03) [EPSG: 5703]
Data Selection Coordinates:   Manually enter selection coordinates (in the horizontal coordinate system listed above)  

1b. Choose Return Classification:   

 Building    Ground    Unclassified    Vegetation    All    

2. Point Cloud Data Download:

     Point cloud data in LAS format      Point cloud data in LAZ format      Point cloud data in ASCII format

3a. DEM Generation (Local Gridding):  

Gridding Method
     Calculate Zmin grid
     Calculate Zmax grid
     Calculate Zmean grid
     Calculate Zidw grid
     Calculate point count grid 		Gridding Parameters
  Grid Resolution (Default = 1 meter):
  Radius value (Default = 1 meter):
Grid Format  
Null Filling     

3b. DEM Generation (TIN):  

Gridding Method
     Calculate TIN 		Gridding Parameters
  Grid Resolution (Default = 1 meter):
  Max. triangle size (Default 50 units):
Grid Format  

4. Derivative Products:  

  Generate hillshade and slope grids in grid format:   
This option is only available when at least one grid is selected in step 3a and 3b (DEM Generation: Zmin, Zmax, Zmean, Zidw or TIN) above.

5. Visualization:  

Generate hillshade images and
Google Earth files from DEMs
Altitude of the light,  (in degrees):    
Azimuth of the light, (in degrees):     		Generate additional color-relief
and colored hillshades
This option is only available when at least one grid is selected in step 3a and 3b (DEM Generation: Zmin, Zmax, Zmean, Zidw or TIN) above.

Job Description
These options allow users to describe and keep track of their jobs. Information entered below is recorded along with other job parameters in your personal LiDAR Job archive accessed via myOpenTopo (available only to registered OpenTopography users).
Job title: (up to 100 characters)
Job description:
(up to 500 characters)
Email Address:
Enter your e-mail address for notification upon completion of processing *
By accessing data via OpenTopography you agree to acknowledge OpenTopography and the dataset
source as specified here in publications, presentations, and other materials produced using these data.