Topography Hydro Breaklines

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Topography Southwest DC - 2020

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Topography Northwest DC - 2020

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Topography Southeast DC - 2020

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Hydrography Centerline

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Hydrography Lines 2015

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Hydrography Lines 2019

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Topography Spot Elevations

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Topography Geodatabase 2 Foot Contours - 2008

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2 foot contours (2008) provided as geodatabase. This dataset contains locations and attributes of 2-ft interval topography data, created as part of the DC Geographic Information System (DC GIS) for the D.C. Office of the Chief Technology Officer (OCTO) and participating D.C. government agencies. In addition to the 2-ft contour data ancillary datasets containing an ESRI geodatabase of masspoints and breaklines.

Launceston geomorphology - break of slope polylines

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This dataset (geomorphology_line_slopebreak.shp) contains polylines delineating breaks of slope associated with escarpments and terrace edges in the area covered by the Tasmanian Landslide Hazard Map Series: Launceston. The shapefile has been produced using ArcGIS. The data has been generated through on-screen digitising of features identified by aerial photography interpretation.