Name: LWI Sample Plot Points
Display Field: ID
Type: Feature Layer
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Description: The LWI Sample Plot Points dataset is part of the Oregon Department of State Lands (DSL) Local Wetlands Inventory (LWI) LWI_Statewide dataset. “Sample Plot” means a specific area on the ground where soils, vegetation and hydrology data are recorded on a field data form per OAR 141-90-0035 definitions, in order to make a wetland determination, and are mapped as points in DSL approved LWIs.Per OAR 141-086-0210 (2009) Where property access is granted, sample plot data must be provided according to the following minimum standards:(a) Verify each wetland with at least one sample plot that best characterizes the wetland;(b) Verify with at least one sample plot each potential wetland where land use activities such as ditching, water diversion, or agricultural practices are likely to have significantly altered site conditions, making observations from a distance or a site walk-over unreliable; and(c) Verify with at least one-sample plot potential wetlands with unreliable indicators (e.g., one dominant plant that grows in both wetlands and non-wetlands, such as Phalaris arundinacea).The LWI Sample Plot Points dataset is part of the LWI_Statewide dataset. The LWI_Statewide dataset is part of the Statewide Wetlands Inventory (SWI) and supersedes the national inventory level mapping included in the SWI within the LWI study area. New LWIs are added to the LWI_Statewide dataset upon approval by DSL.Some local governments must inventory and include protections for resources listed in Oregon’s land use planning goals 5 (Natural Resources), 16 (Estuaries) and 17 (Coastal Shorelands). An LWI fulfills the wetlands inventory requirements for Goal 5 and Goal 17 (OAR 660-015, 660-016, and 660-023). DSL is responsible for the requirements and review of LWIs for Goal compliance and other natural resource planning efforts. In accordance with the DSL’s LWI standards, the approximate location and boundaries of all wetlands and waters are identified within a specified study area.Further information on the development and results of individual LWIs is contained in the LWI reports, original maps, and individual GIS datasets, available for view and download from the DSL LWI web page. The LWI GIS Data Description and template is available on the DSL LWI web page.
Copyright Text: Local Wetlands Inventories received and approved by DSL dating from 1992 through 2019 were digitized and standardized by DSL, Institute for Natural Resources, and Oregon State University Libraries and Press. DSL combined the individual standardized LWI datasets into an LWI_Statewide dataset. New LWIs are added to the LWI_Statewide dataset upon approval by DSL. Individual LWIs are developed by consultants for local governments. Find full reports, citations, maps, and individual LWI GIS datasets on the DSL LWI web page.
The digitizing and standardization of LWI GIS datasets approved by the Oregon Department of State Lands prior to 2018 has been funded wholly or in part by the United States Environmental Protection Agency under assistance agreement number CD-01J37701-02 to the Oregon Department of State Lands. The contents of this LWI dataset do not necessarily reflect the views and policies of the Environmental Protection Agency, nor does mention of trade names or commercial products constitute endorsement or recommendation for use.
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Last Edit Date: 1/4/2024 9:37:45 PM
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