Oregon has lost over half of the wetlands present when the first settlers
arrived in the 1800’s. To ensure that the remaining wetlands are conserved, The Wetlands Conservancy has identified Oregon’s Greatest Wetlands.  While all wetlands are important, Oregon's Greatest Wetlands identifies the most biologically significant wetlands in Oregon. A group of twenty wetland ecologists, familiar with the entire state of Oregon,identified the locations of the biologically important wetlands. The next step was collecting and adding information for wetland resources identified by the Oregon Natural Heritage Program, National Wetlands Inventory, Coastal, Klamath and Willamette Valley Sub Basin Plans, and Oregon BioDiversity Program. Wetland ecologists were then asked to review and add to the maps. Simultaneously we collected existing physiographic and biological information about each of the sites. As this portal develops, this information will be made available.

 GIS by John Bauer, The Wetlands Conservancy

Authored by: Esther Lev, The Wetlands Conservancy, (2009)