The Oregon CUSP shoreline represents a "best of" attempt to create a continuous Mean High Water Shoreline for use in GIS analysis and inventory work. Whenever possible the Oregon CUSP shoreline references a mean-high water shoreline based upon vertical modelling or image interpretation, using both water level stations and/or shoreline indicators. CUSP is primarily built from LiDAR NGS National Shoreline data for the outer Pacific ocean coast and Oregon Lidar Consortium data for the inner estuarine coast.

This data layer is an element of the Oregon GIS Framework. This feature dataset contains the following feature classes: 1. HWM_POINTS feature class: The HWM_POINTS feature class is a compilation of high water marks from flood events for the state of Oregon. 2. NW_Oregon_1996_Inundation feature class: represents 1996 flood inundation area in northwest Oregon. 3. Willamette_Basin_1943_Inundation feature class: represents 1943 flood inundation area in the Willamette Basin. 4. Willamette_River_1861_Inundation feature class: represents 1861 flood inundation area primarily associated with the Willamette River 5. Willamette_River_1964_Inundation feature class: represents 1964 flood inundation area primarily associated with the Willamette River. See feature class metadata for detailed information about each feature class.

This data layer is an element of the Oregon GIS Framework. This feature dataset contains the following feature classes: 1. The Scio_2012_XS feature class: represents cross-section lines for the City of Scio. This dataset was produced by the Strategic Alliance for Risk Reduction (STARR), a technical contractor for FEMA Region 10. 2. Scio_2012_STUDY_REACH feature class: represents flood study reaches for for the City of Scio. This dataset was produced by the Strategic Alliance for Risk Reduction (STARR), a technical contractor for FEMA Region 10. 3. Scio_2012_FLD_HAZ_AR feature class: represents flood study inundation zones for the City of Scio. This dataset was produced by the Strategic Alliance for Risk Reduction (STARR), a technical contractor for FEMA Region 10. See feature class metadata for detailed information about each feature class.

This data layer is an element of the Oregon GIS Framework. This feature dataset contains the following feature classes: 1. FEMA Flood Insurance Study base flood elevation (BFE) lines: The FEMA_BFE feature class is a compilation of FEMA Flood Insurance Study base flood elevation (BFE) lines for the state of Oregon. The FEMA Flood Insurance Study base flood elevation (BFE) lines were derived from Digital Flood Insurance Rate Maps and georeferenced paper Flood Insurance Rate Maps. 2. FEMA Flood Insurance Study inundation zones: The FEMA_FLD_HAZ_AR feature class is a compilation of FEMA Flood Insurance Study inundation zones for the state of Oregon. The FEMA Flood Insurance Study inundation zones were derived from Digital Flood Insurance Rate Maps and georeferenced paper Flood Insurance Rate Maps. 3. FEMA Letter of Map Change (LOMC) Locations: The FEMA_LOMC feature class is a compilation of FEMA Letter of Map Change (LOMC) Locations for the state of Oregon. The FEMA Letter of Map Change (LOMC) Locations were downloaded from the FEMA Map Service Center Website. The LOMC points were precisely located using county-level assessor data, orthoimagery, and lidar hillshades. 4. FEMA Flood Insurance Study profile baselines: The FEMA_PROFIL_BASLN feature class is a compilation of FEMA Flood Insurance Study profile baselines for the state of Oregon. The FEMA Flood Insurance Study profile baselines were derived from Digital Flood Insurance Rate Maps and paper Flood Insurance Rate Maps. 5. FEMA Flood Insurance Study cross section (XS) lines: The FEMA_XS feature class is a compilation of FEMA Flood Insurance Study cross section (XS) lines for the state of Oregon. The FEMA Flood Insurance Study cross section (XS) lines were derived from Digital Flood Insurance Rate Maps and paper Flood Insurance Rate Maps. See feature class metadata for detailed information about each feature class.

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The levee lines feature class is an inventory of levee lines representing the centerline of levee-like features that appear to protect against flooding in the state of Oregon. It is a compilation of levee datasets from the following sources: The Oregon Department of Geology and Mineral Industries (2017), The U.S. Army Corps of Engineers (2015), The Lower Columbia River Partnership (2012) and The Oregon Coastal Monitoring Program (2011). A geospatial inventory of levees and levee-like features is an important resource for assessing flood risk, flood mitigation planning and for emergency response during flood events. It also benefits ecological restoration efforts by helping locate levees to remove or breach in order to expand habitat for aquatic species. Until now, the state of Oregon did not have a single comprehensive inventory that maps levees with the high spatial accuracy needed to support these activities. To meet this need, the Oregon Department of Geology and Mineral Industries (DOGAMI) created new levee data and compiled pre-existing levee data into a single geospatial inventory.