We identified Significant Natural Resources (SNRs) in unincorporated Washington County through a Goal 5 inventory process as part of the comprehensive planning done in the early 1980s.
The inventory for the urban areas is a compilation of Oregon Department of Fish and Wildlife (ODFW) and Portland Audubon Society habitat maps and aerial photos used to identify tree canopy. Using the habitat maps, we and our environmental consultants did limited field work to refine the areas where significant habitat or other Goal 5 resources may have been present. We used the aerials to identify the contiguous tree canopy patches of 5 acres or more inside the Urban Growth Boundary (UGB).
We then shared the habitat maps at community planning meetings for study and input for the urban areas. We prepared a Goal 5 Economic, Social, Environmental, Energy (ESEE) Analysis of the impacts of conflicting uses on the resources for the natural resources that were deemed significant. Results of this Goal 5 inventory process for the urban area can be found in the Community Plan SNR maps.
For the rural area, the Washington County Board of Commissioners adopted the ODFW maps from the Habitat Protection Plan developed for the County, showing water-related resources and Big Game Habitat more generally. See Rural/Natural Resource Plan maps