GIS Data

The following downloadable data are available through the contributions of partnering agencies. The majority of the data and information, located in databases maintained by the partnering agencies, is accessible from this clearinghouse via hypertext links.

The USGS provides two free downloadable software tools (Dem3d and Dlgv32 viewers) for viewing digital data. For more information and downloads of the viewers, please visit the DEM and DLG Viewer page.

• Click on the image for a larger image.
• Click on the topic title to go to that web page.
• Click on Download to download data.
• Click on Metadata for information about the data.

USGS Data Products

DEM Shaded Relief map Download Metadata -- Original -- Reprojected	DOQ Uniform Aerial photos Download Metadata -- Original -- Reprojected	DLG Spatial data in Vector format Download Metadata	DRG Scanned version of topographic map Download Metadata

The National Map The National Map viewer is a Web-enabled portal to the geospatial information. Download Transportation Data (Projection: UTM NAD27 zone 10)	Bathymetry Relief map and data of the lake floor of Lake Tahoe. Download Images Multibeam Metadata SHOALS Metadata

Other Data Products

LANDSAT 7 Satellite image of the Earth's surface Download Metadata	Land Cover Information on the Earth's surface Download Metadata -- Original CA, NV. -- Reprojected CA, NV.	Census Population densities Download Metadata	Soil Soil Surveys Download Metadata

Links to Other Data Download

Raw Data Download for individual DEM, DOQ, DLG, DRG quadrangles.

Tahoe Regional Planning Agency (TRPA): TRPA has the Plan Area Statement and El Dorado County Parcel Data as GIS coverages online.

Western Regional Climate Centers: The Western Regional Climate Center has data on precipitation and precipitation frequency for the western United States.

National Gap Analysis Program: The Gap Analysis Program for California has collected a raster dataset of landuse. Unfortunately, the dataset is in an Albers projection and won't overlay with the rest of the data on the Lake Tahoe Data Clearinghouse. A regional dataset available as ArcInfo Export files and Metadata can be downloaded at http://www.biogeog.ucsb.edu/projects/gap/gap_data_reg.html.

Environmental Protection Agency: The U.S. Environmental Protection Agency provides information on watersheds across the country through their Surf Your Watershed website.

Lake Tahoe Basin Riparian Assessment: The U.S. Forest Service Lake Tahoe Basin Management Unit and researchers at the University of Nevada at Reno recently completed an assessment of channel conditions and wildlife habitat in the riparian corridors of 15 river-side areas in the Lake Tahoe Basin. This study was funded in part by the California Tahoe Conservancy. The study produced several sets of geographic data for each of the riparian corridors. Those data are now available for download.

Northwestern Nevada Real-time Streamflow streamflow data are available for Walker Lake Basin, Carson River Basin, Lake Tahoe Basin and Pyramid Lake Basin.

Tahoe Basin Existing Vegetation Map consists of a raster classification map (at a species level of thematic resolution) and an associated GIS vector coverage containing a suite of derived vegetation classification and structural attributes. This is a vector map derived from image analysis of IKONOS satellite imagery, and funded by both TRPA and the Forest Service.