Found 12 datasets matching filters. (clear all filters)
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National Park Service Unit tract polygons
Search relevance: 1.00 | Views last month: 15 | Catalog Last Checked: April 25, 2026 at 03:54 AM -
Lake Mead National Recreational Area (LMNRA) serves as critical habitat for several federally listed species and supplies water for municipal, domestic, and agricultural use in the Southwestern...
Search relevance: 1.00 | Views last month: 8 | Catalog Last Checked: May 05, 2026 at 09:08 PM -
These data were acquired from 7 study sites distributed across the range of Gopherus agassizii. Data were collected from 1997 to 2002 as part of three separate studies, although data were not...
Search relevance: 1.00 | Views last month: 6 | Catalog Last Checked: May 05, 2026 at 08:38 PM -
Lake Powell retains most of the phosphorus that it receives, leading to downstream phosphorus limitation. These data were compiled to examine controls on phosphorus cycling below Lake Powell in...
Search relevance: 1.00 | Views last month: 4 | Catalog Last Checked: May 05, 2026 at 10:06 PM -
National Park Service Unit Centroid Points.
Search relevance: 1.00 | Views last month: 3 | Catalog Last Checked: April 25, 2026 at 03:54 AM -
This U.S. Geological Survey (USGS) data release contains phytoplankton classification and enumeration results from near-surface water samples collected during a nationwide harmful algal bloom...
Search relevance: 1.00 | Views last month: 2 | Catalog Last Checked: May 05, 2026 at 09:41 PM -
This data release presents geologic map data for the surficial geology of the Overton, Lake Mead, and Las Vegas 30-minute by 60-minute quadrangles, Arizona, Utah, and Nevada. This 1:100,000 scale...
Search relevance: 1.00 | Views last month: 2 | Catalog Last Checked: May 05, 2026 at 09:10 PM -
This data set contains small-scale base GIS data layers compiled by the National Park Service Servicewide Inventory and Monitoring Program and Water Resources Division for use in a ...
Search relevance: 1.00 | Views last month: 1 | Catalog Last Checked: March 04, 2026 at 06:58 AM -
Hydrographic and Impairment Statistics (HIS) is a National Park Service (NPS) Water Resources Division (WRD) project established to track certain goals created in response to the Government...
Search relevance: 1.00 | Views last month: 0 | Catalog Last Checked: March 04, 2026 at 06:57 AM -
Reported here are detrital sanidine argon geochronology data collected to better understand the early evolution of the Colorado River system. Samples were collect throughout the lower Colorado...
Search relevance: 1.00 | Views last month: 0 | Catalog Last Checked: May 05, 2026 at 08:17 PM -
National Park Service unit boundaries.
Search relevance: 1.00 | Views last month: 0 | Catalog Last Checked: January 27, 2026 at 07:49 PM -
These data were converted from the originally delivered Microsoft Access PLOTs database from the Vegetation Mapping Inventory Project of Lake Mead National Recreation Area. These comma-delimited...
Search relevance: 1.00 | Views last month: 0 | Catalog Last Checked: January 25, 2026 at 05:26 PM
