Step 1: Download Geospatial Modeling Environment (GME) Open Source GIS software http://www.spatialecology.com/gme/gmedownload.htm
GMES has dependencies on R and ArcGIS. Therefore, select the download that matches the version of R or ArcGIS you are running.
Note: GME’s predecessor was called HawthsTools. It is likely that you may have used this software in the past.
setup.exeprogram, not the
gme.msiprogram, to install GME.
Note: GME does NOT work with Geodatabases or with rasters that are stored in Geodatabases. Transferring values to the NHD require both shapefiles to also be in the same projection.
Step 4: Transfer raster DEM elevations to your stream network
Click on the Geospatial Modeling Icon and run the software.
For “prefix” use “Elev” for elevation and extract values from your DEM (e.g. 10 m USGS DEM).
For the in use Final_NHD_Perennial.shp for the rasteruse the Digital Elevation Model and for the prefix use Elev.
Step 5: For the output shapefile: Final_NHD_Perennial.shp remove the field with the suffix LWM Length Weighted Mean (LWM).
##Task 2: Transfer Dam-building Material Preference Values to Stream Network
Use the Geospatial Modeling Environment software again.
Conduct this step a total of four times.
Existing_100m_Veg_Cap.imgand for the *prefix *use
Existing_30m_Veg_Cap.imgand for the *prefix *use
Final_NHD_Perennial.shpfor the *raster *use
Potential_100m_Veg_Cap.imgand for the *prefix *use
Potential_30m_Veg_Cap.imgand for the *prefix *use
Note: You must close Arcmap and reopen the program to view GME assigned attributes on Final_NHD_Perennial.shp
where l is the length of a segment, v is the value of the raster cell for that segment, and L is the total line length.
Below is what the resulting feature class attribute table should look like (click on for larger version). Do the same for the 30m buffer data.
The above generated tables (30 m and 100 m) become inputs for the VEG FIS model.
The video below highlights how to use GME to get the vegetation values onto the stream network:
Step 1: Transfer upslope drainage area to the stream network
Again use the “*isectlinerst” * tool.
Step 1: Transfer euclidean distance raster values to the stream network
And yet again use the “*isectlinerst” * tool.
Conduct this step a total of five times
For each run** keep** the MIN field
For each run** keep** the MAX field
For the Utah statewide run of BRAT actual dam counts were collected for the Logan/Little Bear, Strawberry, Price and Fremont HUC 8 watersheds.
We found this method to be a cost effective means for collecting actual dam count data and highly recommend using this approach if time/resources permit.
Step 2: Change the projection of the output shapefile to the projection you are working (i.e. UTM or other). Use Data Management - Project
Step 5: Join the Frequency table to the NHD_Perennial_Final.shp on the FID field and the NearFID field. To do this, right click on the stream line. Go to Join and Relates - Join. Choose 1. FID, 2. the Frequency table, 3. Near FID. Click OK.
Step 6: Export the joined shapefile. Right click on the stream line. Go to Data, Export Data. Name the file Final_NHD_Perrennial_BRATInput.shp