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Oregon Wetland MappingStandard
Draft Version 2.0 March 2009
Replaces Version 1Endorsed by OGIC December 2006
Goals
• Consistent and compatible
• Easy to integrate
• Easy to disseminate
• Does not preclude different datasets, but shared datasets must meet minimum OWMS.
Why a Revision?
• FGDC: Draft Federal Wetlands Mapping Standard, September 2008
• DSL: Administrative Rules, January 2009
• OSU & TWC: Oregon Wetland Layer – Oregon Explorer Wetlands Portal– OWMS Version 1 inadequate
Current wetland datasets in Oregon • NWI – wetlands• NRCS -- hydric soils• NHD -- waterbodies and springs • OSU -- vegetation and conservation• TWC -- conservation• OWEB -- wetland restoration projects (OWRI)• ODFW -- Conservation Opp Areas from WCS• DSL – fill & removal, mitigation, LWIs,
delineations• USFS, BLM, USFWS, OPRD: wetlands,
vegetation, condition
“Enhanced NWI”• Local Wetland
Inventories (LWIs)
• Miscellaneous wetland mapping – Agencies, NGOs– Theses, reports– Plot data
• Wetland delineations
LWIs (Corvallis)
Blue = NWI, Red = LWI
Available data:– Cowardin– HGM– Veg– Condition– Conservation Status
Wetland Mapping
• Cowardin
• HGM code
• Vegetation
• Conservation Status
• Data Sources
Informal Review of Draft Version 2
• DSL
• ODOT
• OWEB
• INR-ORNHIC
• TWC
• Consultants
Basics
• Projection -- Oregon Lambert
• Source Imagery – CIR min. 1m (FGDC)– Interim: NAIP @ 0.5 m
• Horizontal Accuracy – min. 5 m (FGDC)
• Vertical Accuracy – not specified (FGDC)
• TMU – 0.2 ha, 0.5 ac (FGDC) – LWIs & WCPS (DSL) – 0.04 ha, 0.1 ac
• Metadata -- Oregon Standard
Minimum Attributes
• Sitename
• Data source & yr
• Creator & yr
• Method
• Data accuracy
• Cowardin
• Cowardin source
• HGM
• HGM source
• Poly source ID
• Field verification
• Data source type
Optional Attributes
• Hydro barriers
• Artificial drain
• Altered flows
• Wetland mgt
• Cover type
• Veg species
• Veg condition
• Veg source & yr
• LSW
• Goal 5 or 16
• SAC
• Developed