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Service Description: Layers included consist of: a) Location of levees, dikes, roads that act as levees, and jetties and rip rap that protect land from flooding. Location of levee features was digitized from LiDAR derived products such as Hillshade and Topographic Position Index Grids. Field work and participatory mapping techniques were used to verify existence of levees as well as to clarify areas where LiDAR use was limited. b) Polygons representing estuarine areas that are members of special districts such as districts for diking, drainage or other forms of hydromodification. Assembled from survey meets & bounds, legal descriptions, county clerk records and/or district map records.

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Layers:

• Estuarine Levees Inventory (0)
• Current and Historic Diking Drainage Special Districts (1)

Description:

Service Item Id: 94dc4c998fe449e8bf06c614568fe75f

Copyright Text: Oregon Coastal Management Program, NOAA Coastal Management Fellowship

Spatial Reference: 102100  (3857)


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Spatial Reference: 102100  (3857)

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Spatial Reference: 102100  (3857)

Units: esriMeters

Supported Image Format Types: PNG32,PNG24,PNG,JPG,DIB,TIFF,EMF,PS,PDF,GIF,SVG,SVGZ,BMP

Document Info:

Title: Estuarine Dikes & Levees Inventory, Current and Historic Estuarine Diking, Drainage or Special Districts, OCMP, 2011
Author: Laura Mattison
Comments: Layers included consist of: a) Location of levees, dikes, roads that act as levees, and jetties and rip rap that protect land from flooding. Location of levee features was digitized from LiDAR derived products such as Hillshade and Topographic Position Index Grids. Field work and participatory mapping techniques were used to verify existence of levees as well as to clarify areas where LiDAR use was limited. b) Polygons representing estuarine areas that are members of special districts such as districts for diking, drainage or other forms of hydromodification. Assembled from survey meets & bounds, legal descriptions, county clerk records and/or district map records.
Subject: Service depicting some of the products of a 2009-2011 NOAA Coastal Management Fellowship on estuary diking in Oregon.
Category:
Keywords: District,Levee,Dike,Estuary
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Supported Query Formats: JSON, geoJSON

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