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Natural Resources
External Link
Direct link to download a geodatabase containing elevation contours for the entire state of Colorado at contour intervals of 10, 20, and 40. The most recent contour line was entered on 10/01/2009. Dataset is maintained by the U.S. Geological Survey.
Tags bic gocodecolorado colorado usgs hydrography and 7 more
Updated
October 14 2024
Views
5,072

Natural Resources
External Link
Links to a geodatabase (gdb 10.1) download for the National Hydrography Dataset (NHD) for the state of Colorado. The NHD contains data on streams, areas, points, flowlines, and watershed basin boundaries in Hydrologic Units 2, 4, 6, 8, 10, and 12. Data is maintained by the U.S. Geological Survey.
Tags bic gocodecolorado colorado usgs hydrography and 6 more
Updated
October 14 2024
Views
2,234

Natural Resources
Map
Lakes location and size, from the Colorado Department of Transportation (CDOT).
Tags bic gocodecolorado colorado cdot hydrography and 6 more
Updated
October 14 2024
Views
2,693

Natural Resources
Map
Stream locations, names, and sizes, from the Colorado Department of Transportation (CDOT).
Tags bic gocodecolorado colorado cdot hydrography and 7 more
Updated
October 14 2024
Views
4,622

External Link
A depiction of areas designated as Wild and Scenic Rivers. Metadata
Tags blm fs fws hydrography inland waters and 8 more
Updated
October 13 2024
Views
28

External Link
National Inventory of Dams

This feature layer, utilizing National Geospatial Data Asset (NGDA) data from the U.S. Army Corps of Engineers (USACE), displays dams within the United States, Puerto Rico and Guam. Per the USACE, "The National Inventory of Dams (NID) consists of dams meeting at least one of the following criteria:
  • Dams where downstream flooding would likely result in loss of human life (high hazard potential).
  • Dams where downstream flooding would likely result in disruption of access to critical facilities, damage to public and private facilities, and require difficult mitigation efforts (significant hazard potential).
  • Dams that meet minimum height and reservoir size requirements, even though they do not pose the same level of life or economic risk as those above – these dams are typically equal to or exceed 25 feet in height and exceed 15 acre-feet in storage, or equal to or exceeding 50 acre-feet storage and exceeding 6 feet in height.
The NID does not yet contain all dams in the U.S. that meet these criteria. Continued, routine updates to the NID and enhanced data collection efforts, focused on the most reliable data sources (primarily the many federal and state government dam regulatory programs), will help capture these dams and result in a more robust dataset over time."
Hoover, Davis & Glen Canyon Dams

Data currency: This cached Esri federal service is checked weekly for updates from its enterprise federal source (Dams Public) and will support mapping, analysis, data exports and OGC API – Feature access.
NGDAID: 
Tags fgdc federal federal geospatial data committee inland waters hydrography and 18 more
Updated
October 13 2024
Views
53