Description: The Island County wetland layer is currently, as of 5/13/2015, a combination of the National Wetlands Inventory (NWI) map made by the U.S. Fish & Wildlife Service (USFWS), along with updates made by Island County staff from local wetland delineations and PCADs (Preliminary Critical Areas Determinations). This dataset was composed in 2006 with the initiation of the Island County Critical Area Update. During the process wetland information was compiled from three main resources: The National Wetland Inventory Dataset, digital wetland delineations performed by Pentec in 1998, and county wetland files. Approximately 750, 600, and 400 shapes respectively were merged together to form this single dataset. Many of the same wetlands were found in each dataset thus when combined the total number to wetlands was approximately 1000. The goal for this layer is eventually show only wetland features documented by local Island County staff. As of 5/13/2015, this layer shows locally gathered data plus old (pre-2011) NWI data. This layer should be used in concert with the latest National Wetland Inventory layer downloaded from USFWS. These two layers together shall serve to facilitate wetland Critical Area regulation in Island County.
Description: The DNR water course (WC), water body (WB), and water shoreline (WS) datasets, collectively known as DNR HYDRO, make up the most up-to-date hydrography layer for the state of Washington. WC represents water courses as arcs or lines. These occur alone as single arcs representing streams, ditches, or pipelines, or as centerlines through water body polygons such as double-banked streams, lakes, impoundments, reservoirs, wet areas, or glaciers. WB represents water bodies as polygonal features. WB includes features such as Puget Sound, lakes, wet areas, reservoirs, impoundments, glaciers, islands, and dams. WS represents shorelines as polygon perimeter arcs. The WC and WBWS are edited daily and simultaneously; updates are posted weekly for internal DNR use and monthly for external use. Attribute interrelationships within the WC and within the WBWS and spatial and attribute interrelationships between the WC and WBWS are maintained. Routes can be built on the WC by using the whole stream identifier (WC_LLID_NR). DNR HYDRO is continually updated through the DNR Forest Practices Water Type Modification Form process. DNR HYDRO is mixed scale. The nominal scale is considered 1:24,000, but some data at larger scales are included.
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Description: <DIV STYLE="text-align:Left;"><DIV><P><SPAN>The data was created using ArcHydro tools to model flow paths based on the 2001 Island County lidar data set along with the roads layers and culverts layers. It has been smoothed and clipped to water body polygons for cartographic purposes. Flow paths were modeled using lidar data with 6' raster cells. Stream names have been added for the few features than have formal names.It is recommended that this data set be recreated using newer lidar data.</SPAN></P><P><A href="file:///J:/Metadata/Web/sdeprod.ICGIS.Hydro_Streams_Final.html"><SPAN>Full Metadata</SPAN></A></P></DIV></DIV>
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Description: 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.
Copyright Text: Washington State Department of Ecology, Shorelands and Coastal Zone Management Program
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Description: 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.
Copyright Text: Washington State Department of Ecology, Shorelands and Coastal Zone Management Program
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Description: Fresh water lakes and ponds in Island County. Data was created for cartographic purposes. May also be used for drainage, land cover, and othe analytical purposes. Data is updated as missed fresh water features are found. Last updated January 2015.