Parent Layer: rough hydrology

Name: hydro breaklines (2013)

Display Field: Feature

Type: Feature Layer

Geometry Type: esriGeometryPolyline

Description: This shapefile represents the water's edge breaklines of the Juneau LiDAR study area. Water boundary polygons were developed using an algorithm which weights LiDAR-derived slopes, intensities, and return densities to detect the water's edge. Elevation values were then assigned to the water's edge line from the LiDAR data. The breaklines were enforced in the hydroflattened bare earth model. The horizontal datum for this dataset is NAD83(2011), the vertical datum is NAVD88, Geoid 12a (Adjusted to MLLW* see use limitations), and it is projected in Alaska State Plane Zone 1. Horizontal units are in US Survey Feet and vertical units are in US Survey Feet. WSI collected the Juneau LiDAR data for the City and Borough of Juneau between 05/08/2013 - 06/11/2013.

Definition Expression: N/A

Copyright Text: City and Borough of Juneau

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Extent:

XMin: 2403990.478662338
YMin: 2269198.854928644
XMax: 2680753.375423257
YMax: 2577095.51075424
Spatial Reference: PROJCS["NAD_1983_2011_StatePlane_Alaska_1_US_Feet",GEOGCS["GCS_NAD_1983_2011",DATUM["D_NAD_1983_2011",SPHEROID["GRS_1980",6378137.0,298.257222101]],PRIMEM["Greenwich",0.0],UNIT["Degree",0.0174532925199433]],PROJECTION["Hotine_Oblique_Mercator_Azimuth_Natural_Origin"],PARAMETER["false_easting",16404166.66666666],PARAMETER["false_northing",-16404166.66666666],PARAMETER["scale_factor",0.9999],PARAMETER["azimuth",-36.86989764583333],PARAMETER["longitude_of_center",-133.6666666666667],PARAMETER["latitude_of_center",57.0],UNIT["Foot_US",0.3048006096012192]]

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Type ID Field: null

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• Feature ( type: esriFieldTypeString , alias: Feature , length: 50 )

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