Description: <DIV STYLE="text-align:Left;"><DIV><P><SPAN>The Channel Migration Potential (CHAMP) layer contains stream networks of Western Washington (and much of Western Oregon) with associated data and information important for assessing channel migration activity. It also features information on channel characteristics such as stream flow and physical dimensions. This data layer’s main feature is a classification of channel migration potential based on channel confinement and erosion potential. The layer was derived from existing statewide geospatial datasets and classified according to channel migration measurements by the High Resolution Change Detection (HRCD) project for the Puget Sound Region (Washington Department of Fish and Wildlife, 2014). While the layer identifies the potential for channel migration, it does not predict channel migration rates. Thus, this data layer should be used to screen and prioritize stream reaches for further channel migration evaluation. The tool helps plan and prioritize floodplain management actions such as Channel Migration Zone mapping, erosion risk reduction, and floodplain restoration. The background, use, and development of the CHAMP layer are fully described in Ecology Publication 15-06-003 (full report citation and URL below). That report also describes visual assessment techniques that should be used along with the CHAMP layer to assess channel migration potential. Legg, N.T. and Olson, P.L., 2015, Screening Tools for Identifying Migrating Stream Channels in Western Washington: Geospatial Data Layers and Visual Assessments: Washington State Department of Ecology Publication 15-06-003, 40 p. https://fortress.wa.gov/ecy/publications/SummaryPages/1506003.html</SPAN><SPAN /><SPAN>The tool developers would like to thank the following people for their contribution to this work: • Brian D. Collins (University of Washington) • Jerry Franklin (Washington Department of Ecology) • Christina Kellum (Washington Department of Ecology) • Matt Muller (Washington Department of Fish and Wildlife) • Hugh Shipman (Washington Department of Ecology) • Terry Swanson (Washington Department of Ecology) This project has been funded wholly or in part by the United States Environmental Protection Agency under Puget Sound Ecosystem Restoration and Protection Cooperative Agreement Grant PC-00J27601 with Washington Department of Ecology. The contents of this document 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.</SPAN></P></DIV></DIV>
Service Item Id: dfbb296e276b4e18bae61b025f4e441e
Copyright Text: Washington Department of Ecology, Shorelands and Environmental Assistance Program, University of Washington, Washington Department of Fish and Wildlife
Description: <DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>These maps delineate the entire Puget Sound shoreline by geomorphic type. The primary purpose of the mapping was to identify feeder bluffs, eroding shorelines that are important to maintaining nearby beaches. Knowledge of the distribution of these features can be used by local planners and resource agencies to better manage Puget Sound shorelines. The study emphasized mapping of coastal bluffs, but also extended to a wide range of other coastal landforms, including rocky shores, river deltas, and small lagoons and estuaries. This mapping project is described in the following report, available from the Department of Ecology: MacLennan., A. Johannessen, J.W., Williams, S.A., Gerstel, W., Waggoner, J.F., and Bailey, A., 2013, Feeder Bluff Mapping of Puget Sound, prepared by Coastal Geologic Services, Bellingham, for Washington Department of Ecology, Olympia WA, 117 pp and map folio. See https://fortress.wa.gov/ecy/publications/parts/1406016part1.pdf.</SPAN></P></DIV></DIV></DIV>
Copyright Text: These maps were developed by Coastal Geologic Services for the Department of Ecology as part of a project looking at feeder bluffs on Puget Sound. This project was managed at Ecology by Hugh Shipman. Funding was from the United States Environmental Protection Agency under Assistance Agreement PC 00J29801 to the Washington Department of Fish and Wildlife and was administered by the Lead Organization for Marine and Nearshore Grants at WDFW.
Description: <DIV STYLE="text-align:Left;"><DIV><P><SPAN>The data contained in this dataset is a synthesis of existing information on levees in the State of Washington. The shapefiles displayed attempt to depict levee centerlines as accurately as possible. Primary data sources include the U.S. Army Corps of Engineers and the Federal Emergency Management Agency, In addition to these sources, inputs from local levee managers were used to augment the aforementioned sources.</SPAN></P></DIV></DIV>
Copyright Text: The Resilience Institute, Huxley College of the Environment, Western Washington University
Description: <DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>The Shoreline Public Access Project is a geographic information systems (GIS) project to identify the location, length, and degree of public access to Washington State's marine shoreline. Before the project, it was unknown how much of Washington's 3066 miles of shoreline was public. The information was scattered throughout various government agencies and the data quality was variable. Through the Shoreline Public Access Project, the best available information has been summarized into a single data set, used to answer questions about our shoreline's ownership and public accessibility.</SPAN></P></DIV></DIV></DIV>
Description: <DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>The Washington State Department of Ecology supports local governments in their efforts to maintain and expand shoreline public access opportunities by developing and maintaining a detailed GIS database of public access locations (point features) along the coastal shorelines. It contains a rich variety of information such as amenities (boat launches, toilets, ADA accessible, etc.) and activities (tidepooling, hiking, shellfishing, etc.) that are available at each access point. The information was collected using a GPS in the field between 2008-2010 and is updated as resources allow. The inventory is available through the Ecology's online Washington Coastal Atlas. This data corresponds with the Marine Shoreline Public Access GIS dataset (linear features) which is maintained by Ecology's Environmental Assistance Program.</SPAN></P></DIV></DIV></DIV>
Copyright Text: Washington Department of Ecology Shorelands Program
Description: <DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>Littoral drift, or shore drift, is the process by which beach sediment is moved along the shoreline. Drift results primarily from the oblique approach of wind-generated waves and can therefore change in response to short-term (daily, weekly, or seasonally) shifts in wind direction. Over the long term, however, many shorelines exhibit a single direction of net shore drift. Net shore-drift is determined through geomorphologic analysis of beach sediment patterns and of coastal landforms. Many shorelines can be divided into discrete littoral, or drift, cells, which are independent of one another and for which distinct sediment sources and sinks can be identified. This coverage denotes the extent of individual littoral cells and the direction of net shore-drift within each.</SPAN></P></DIV></DIV></DIV>
Copyright Text: Washington State Department of Ecology, Shorelands and Environmental Assistance Program (SEA)
Description: <DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>The digital maps presented here were originally published as hard copy maps in the Coastal Zone Atlas of Washington between 1978 and 1980. Although the Atlas has been out of print for many years, the maps contain information that remain the basis for local planning decisions. After receiving multiple requests for electronic versions of portions of the Atlas, an effort was made to scan, georeference and digitize aspects of the Atlas, beginning with the slope stability maps. These maps indicate the relative stability of coastal slopes as interpreted by geologists based on aerial photographs, geological mapping, topography, and field observations. Such methods are standard, but may occasionally result in some unstable areas being overlooked and in some stable areas being incorrectly identified as unstable. Further inaccuracies are introduced to the data through the process of converting the published maps into digital format. Important land use or building decisions should always be based on detailed geotechnical investigations. This mapping represents conditions observed in the early and mid-1970s. Shorelines and steep slopes are dynamic areas and many landslides have occurred since that time that are not reflected on these maps. Subsequent human activities may have increased or decreased the stability of some areas.</SPAN></P></DIV></DIV></DIV>
Copyright Text: Washington State Department of Ecology, Shorelands and Coastal Zone Management Program
Description: <DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>Ecology created SMA_Jurisdiction_Streams (also known as SMA_Arcs_Adopt) by selecting appropriate flowlines from the National Hydrographic Dataset "NHDFlowline.lyr" as maintained by the Department of Ecology in conjunction with the USGS. This dataset can be used with linear referencing and is synchronized with the March 2019 version of NHD.</SPAN></P><P><SPAN>The original official list of streams that meet the 20 cubic feet per second (cfs) mean annual flow criteria found in state rule at WAC 173-18 HAS BEEN SUPERSEDED by lists contained in Ecology-approved shoreline master programs.</SPAN></P><P><SPAN>Each local government master program shall include a list of streams constituting shorelines of the state within the jurisdiction of the master program that complies with the requirements of RCW 90.58.030 (2)(d). When such master program is approved by the department, subsequent to the effective date of this provision, the list within the master program shall be the official list for that jurisdiction and shall supersede the list contained herein. Streams and rivers westof the Cascades crest with a mean annual flow of 1,000 cfs or greater, and eastof the Cascades crest with either a mean annual flow or 200 cfs or more orthe portion downstream from the first 300 square miles of drainage areas are classified as shorelines of statewide significance.</SPAN></P></DIV></DIV></DIV>
Copyright Text: See the National Hydrographic Dataset metadata. SMA_Arcs_Adopt (also known as SMA_Jurisdiction_Streams) was updated by the Department of Ecology, SEA Program, in January 2017, from the NHD Flowline data.
Description: <DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN><SPAN>Ecology created SMA_Poly_Adopt (also known as SMA_Jurisdiction_Lakes) by selecting appropriate water bodies from the National Hydrographic Dataset "NHDWaterbody.lyr" as maintained by the Department of Ecology.</SPAN></SPAN></P><P><SPAN><SPAN>The Shoreline Management Act (SMA) applies to lake sand reservoirs greater than 20 acres in area. The area used to make this determination is defined by a continuous ordinary high water mark and may include vegetated areas as well as open water areas.</SPAN></SPAN></P><P><SPAN><SPAN>Lakes over 1,000 acres in area and all associated shorelands are shorelines of statewide significance. Lakes of statewide significance are listed by county in WAC 173-20.</SPAN></SPAN></P><P><SPAN><SPAN>Water bodies found to be smaller than the 20-acre minimum will be removed from SMA_Poly_Adopt. Water bodies greater than 20 acres not captured in SMA_Poly_Adopt will be added to it. These changes occur on an irregular basis. See Chapter 173-18-044 WAC</SPAN></SPAN></P><P><SPAN>The SMA_Jurisdiction_Lakes dataset was resynchronized to the March 2019 version of the NHD</SPAN></P><P><SPAN>https://ecology.wa.gov/Water-Shorelines/Shoreline-coastal-management/Shoreline-coastal-planning/Shoreline-Master-Programs</SPAN></P><P><SPAN /></P></DIV></DIV></DIV>
Copyright Text: See the National Hydrographic Dataset metadata. SMA_Poly_Adopt (also known as SMA_Jurisdiction_Lakes) was updated by the Department of Ecology, SEA Program, in January 2017, and resynchronized to the March 2019 version of the NHD.
Description: <DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>Washington marine (saltwater) shorelines including Puget Sound, Hood Canal, the Strait of Juan de Fuca, and the Pacific coastline. Also includes those portions of Washington's marine shorelines that are designated "Shorelines of State-wide Significance" by the Shoreline Management Act, Chapter 90.58. Nisqually Delta area updated May 2016 to reflect post dike removal.</SPAN></P></DIV></DIV></DIV>
Description: <DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>Points on streams and rivers where SMA jurisdiction begins as published in Chapter 173-18 WAC. This layer will not be updated. It is slowly becoming outdated as cities and counties update their list of SMA streams in their shoreline master program. See WAC 173-18-044 posted at http://apps.leg.wa.gov/wac/default.aspx?cite=173-18-044.</SPAN></P><P><SPAN>Point locations were originally compiled for Ecology in 1972 by the US Geological Survey, Water Resources Division, Tacoma, WA, and released in STREAMS OF WASHINGTON UNDER THE REQUIREMENTS OF THE SHORELINE MANAGEMENT ACT OF 1971. Points were determined using multiple-regression techniques based on streamflow and basin precipitation records. Ecology has occasionally updated point locations, and added and subtracted points since 1972.</SPAN></P></DIV></DIV></DIV>
Copyright Text: Washington State Department of Ecology, SEA Program.
Description: <DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>Streams and rivers published in Chapter 173-18-WAC. This layer will not be updated. It is slowly becoming outdated as cities and counties update their list of Shoreline Management Act streams in their shoreline master program. See WAC 173-18-044 posted at http://apps.leg.wa.gov/wac/default.aspx?cite=173-18-044.</SPAN></P><P><SPAN>The upstream points where SMA jurisdiction begins were originally compiled for Ecology in 1972 by the US Geological Survey, Water Resources Division, Tacoma, WA, and released in STREAMS OF WASHINGTON UNDER THE REQUIREMENTS OF THE SHORELINE MANAGEMENT ACT OF 1971. Points were determined using multiple-regression techniques based on streamflow and basin precipitation records. Ecology has occasionally updated those points and added and subtracted SMA streams and portions of SMA streams since 1972.</SPAN></P><P><SPAN /></P><P><SPAN /></P></DIV></DIV></DIV>
Copyright Text: Washington State Department of Ecology, SEA Program.
Description: <DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>Water bodies (lakes, wetlands, etc.) published in Chapter 173-20 WAC. These will be replaced by water body lists published in local government shoreline master programs. See Chapter 173-20-044 WAC.</SPAN></P></DIV></DIV></DIV>
Copyright Text: Washington State Department of Natural Resources, United States Forest Service, United States Geological Survey, United States Bureau of Land Management, Washington State Department of Ecology
Description: <DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>Estimated flow points on streams and rivers likely to qualify as "shorelines of the state" as defined in Chapter 90.58.030 RCW. Jurisdiction begins where stream flow exceeds 20 cubic feet per second mean annual flow (cfsmaf).</SPAN></P></DIV></DIV></DIV>
Copyright Text: Washington State Department of Ecology, Shorelands and Environmental Assistance Program, United States Geological Survey
Description: <DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>Streams and rivers likely to qualify as "shorelines of the state" as defined in the Shoreline Management Act (SMA), Chapter 90.58.030 RCW.</SPAN></P></DIV></DIV></DIV>
Copyright Text: Washington State Department of Ecology, Shorelands and Environmental Assistance Program, United States Geological Survey
Description: <DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>Lakes, reservoirs and similar water areas of the state likely to qualify as "shorelines of the state" as defined by Chapter 90.58.030 RCW.</SPAN></P></DIV></DIV></DIV>
Copyright Text: Washington State Department of Ecology, Shorelands and Environmental Assistance Program, United States Geological Survey