Polygon Shapefile of the Lower Columbia Estuary Partnership study area.  Projection: NAD83 Oregon Statewide Lambert (EPSG 2991)

The 2010 Lower Columbia Terrain Model is a combined bathymetric/topographic seamless digital surface model created by the Portland District of the US Army Corps of Engineers.  The project was completed primarily to support hydraulic modeling related to the Columbia River Treaty, however its applications extend far beyond this.

The Columbian White-tailed Deer is an endangered subspecies of white-tailed deer.

Change in land cover over roughly the past 140 years was evaluated for the Lower Columbia River and Estuary by comparing digital GIS representations of late 1800’s maps (Office of Coast topographic sheets, and General Land Office survey maps) with recent land cover data that was generated by the Lower Columbia Estuary Partnership as part of the Columbia River Estuary Ecosystem Classification. The evaluation was conducted for the historical floodplain of the tidally influenced, lower 146 miles of river.

This report describes Action Effectiveness Monitoring program accomplishments during September 15, 2007 to March 31, 2009, or Year 4 of this on-going project. For a background on the project since its inception in 2007, please see previous years' annual reports.

This report describes Action Effectiveness Monitoring program accomplishments during September 15, 2008 to December 31, 2009, or Year 5 of this on-going project. For a background on the project since its inception in 2007, please see previous years' annual reports.