Beaver dam locations and beaver activity in the Tualatin Basin, Oregon (ver. 2.0, November 2019)
Dates
Publication Date
2017-10-17
Revision
2019-11-25
Citation
Smith, C.D., 2017, Beaver dam locations and beaver activity in the Tualatin Basin, Oregon (ver. 2.0, November 2019): U.S. Geological Survey data release, https://doi.org/10.5066/F7PZ57QP.
Summary
USGS met with 13 local groups and organizations around the Portland, Oregon region to collect information regarding the locations of beaver dams in the Tualatin Basin. The local sources had identified beaver dams between 2011 and 2019, and data were compiled by USGS into an ArcGIS shapefile. Often, the local groups did not know the GPS coordinates of beaver dams, but they had identified beaver-affected reaches during that same time period. Therefore, a second shapefile was created to include the locations of beaver activity (including beaver chews, lodges, and dams) in the Tualatin Basin. The Beaver Dam Locations ArcGIS shapefile shows the known locations of beaver dams in the Tualatin Basin. The Beaver Activity Locations ArcGIS [...]
Summary
USGS met with 13 local groups and organizations around the Portland, Oregon region to collect information regarding the locations of beaver dams in the Tualatin Basin. The local sources had identified beaver dams between 2011 and 2019, and data were compiled by USGS into an ArcGIS shapefile. Often, the local groups did not know the GPS coordinates of beaver dams, but they had identified beaver-affected reaches during that same time period. Therefore, a second shapefile was created to include the locations of beaver activity (including beaver chews, lodges, and dams) in the Tualatin Basin.
The Beaver Dam Locations ArcGIS shapefile shows the known locations of beaver dams in the Tualatin Basin. The Beaver Activity Locations ArcGIS shapefile shows the known locations of beaver activity (including beaver chews, lodges, and dams) in the Tualatin Basin.
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Revision_text_doc_Version2.txt
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Purpose
The beaver dam location information was collected and compiled by the U.S. Geological Survey (USGS) for multiple reasons: 1) Version 1 was the first inventory of beaver dams and activity in the Tualatin River basin. Version 2 includes more dam information (including dam locations along Johnson Creek) and is an update to that dataset. 2) This dam inventory will help the USGS validate a model of potential dam capacity in the basin. 3) Many agencies and local non-profit organizations are currently studying beavers, and completing this inventory increased communication and collaboration between groups.
Revision 2.0 by Cassandra Smith on November 22, 2017. To review the changes that were made, see “Revision_text_doc_Version2.txt” in the attached files section.
