Cascade is supporting Metro in the development of a trail network and day-use area within Newell Creek Canyon located in Clackamas County. The Access Master Plan includes hiking, off-road cycling, and multi-use trails with bridges, scenic overlooks, picnic areas, restrooms, and parking. Implications of aligning trails and other project features near or within existing wetlands or other jurisdictional waters needed to be understood to assist Metro with the planning efforts.
Cascade completed a wetland assessment and mapping to document the absence or presence of wetlands and other waters within a 25-foot buffer on either side of the Newell Creek Canyon proposed trail network. The boundaries of wetlands were approximated for the determination-level study using informal wetland data plots to collect information on vegetation, soil, and hydrological characteristics to assess whether the area met wetland criteria. Approximate wetland boundaries were marked in the field with flagging, located with GPS units, and mapped.
Cascade provided an analysis of the city, county, state, and federal jurisdictional regulations that may potentially apply to the identified wetlands and waters. Cascade will be moving into the formal delineation and permitting phase in summer 2016.