GIS Data Dictionary
Hydrography - Lakes and Reservoirs
Last Updated: May 2002
hydro_lakes was created and is maintained by the Boulder County Parks and
Open Space Department.
Copyright 2001
County of Boulder, Colorado. All rights reserved. All data must be
identified and labeled as copyrighted by the County of Boulder, Colorado.
Sale or redistribution of these shapefiles is not permitted without separate
agreements with Boulder County. For information concerning such an
agreement, contact the Parks and Open Space GIS Manager at: (303) 441-3950
or jbellis@co.boulder.co.us.
Disclaimer
All efforts have been made to make these data as accurate as possible,
however, arcs are not accurate to surveying standards. Boulder County will
not assume liability for the data contained in this website. GIS shapefiles,
available for general distribution, are in Boulder County's standard
projection and coordinate system. They include existing attribution, data
dictionaries, descriptions and other supporting documentation.
Conversions,
projections, consultation and support will not be provided. If you find
errors in this shapefile, please contact the Parks and Open Space GIS
Manager.
Data Format
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Format:
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ArcView Shapefile
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Map Projection:
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Lambert Conformal Secant Cone
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Coordinate System:
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Colorado State Plane, North Zone 3451, grid feet
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Horizontal Datum:
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HPGN-NAD 83/92
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Units:
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feet
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Spatial Representation:
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vector
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Source:
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U.S. Geologic Survey SDTS and Colorado State University CORRC
digital mapping converted from UTM to State Plane. Updated to
Boulder County Digital Ortho Photos.
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Source Scale:
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1:24,000
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Status:
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Ongoing updates
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Coding
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Data Type:
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Polygon Shapefile
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Description:
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Lakes, Reservoirs, and Other Water Bodies
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Data Source:
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U.S. Geologic Survey SDTS and Colorado State University CORC
digital mapping converted from UTM to State Plane. Updated to
Boulder County Digital Ortho Photos.
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Polygon Attributes:
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Area:
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polygon area in square feet
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Perimeter:
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polygon perimeter in feet
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Hydro24k_:
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internal polygon ID
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Hydro24k_i:
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internal polygon ID
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Entity_lab:
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internal polygon code
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Cff_code:
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Cartographic Feature Code
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410 = Perennial Lake or Pond
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412 = Intermittent Lake or Pond
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413 = Reservoir or Gravel Pit Lake
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415 = Sewage Lagoon
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428 = Snowfield
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431 = Wetland or Marsh
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Cff_word:
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Name of Cartographic Feature Code
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Name:
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Name of Water Feature
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Legend
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hydro_lakes.avl
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unique symbol for each cff_code
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