Oregon Wetland Mapping Standard Draft Version 2 0

Oregon Wetland Mapping Standard Draft Version 2. 0 March 2009 Replaces Version 1 Endorsed 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. 1 m (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 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