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1-5:Aurora Donald Interchange(Exit 278)
<br /> Interchange Area Management Plan for Marion County Approval
<br /> ODOT KN19062
<br /> Oregon Department of Transportation—Region 2
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<br /> Parametrix NWI Wetland FEMA Floodplains and Goal 5 Resources
<br /> The mapped vicinity is identified as an area of NM Freshwater Emergent Wetland
<br /> minimal flood hazard by the Federal Emergency I Freshwater Forested/Shrub Wetland 1-5 Aurora-Donald InterchangeINN
<br /> Management Agency(FEMA).
<br /> There are no Goal 5 resources besides wetlands -_ Freshwater Pond
<br /> within the project vicinity. ®Riverine
<br /> e 0 250 500 1,000 Q Study Area
<br /> eet I i Tax Lot
<br /> Source:0 Meobor,O OpenSueetuap,Mxicn County,
<br /> Fede.,eme.eeney Manaeemew sxenry trews r7Z Marion County Wetland Overlay
<br /> Marion County,Oregon
<br /> Figure 2-4. FEMA Floodplains and Goal 5 Resources
<br /> 2.4.3 Surface Waters and Wetlands
<br /> 2.4.3.1 Surface Waters
<br /> One mapped stream is located within the study area.This unnamed stream (Reach Code 17090009010504) is a
<br /> tributary to Senecal Creek,which flows approximately 2,000 feet south of the study area boundary. The
<br /> unnamed stream is classified in the National Wetlands Inventory as a riverine (R4SBC) reach near Ehlen Road
<br /> and as a freshwater forested/shrub wetland (PF01C) reach between the upstream reach and its confluence with
<br /> Senecal Creek. Field observation in May 2019 indicated that this unnamed tributary appears to receive
<br /> hydrology from surface runoff,flow from roadside ditches, and groundwater discharge.
<br /> 2-10 July 2020 1274-3012-031
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