U.S. flag

An official website of the United States government

Default group image
U.S. Forest Service

Other Access

The information on this page (the dataset metadata) is also available in these formats:


via the DKAN API

Data Extent

NorWeST stream temperature data summaries for the western U.S.

NorWeST is an interagency stream temperature database and model for the western United States containing data from over 20,000 unique stream locations. Temperature observations were solicited from state, federal, tribal, private, and municipal resource organizations and processed using a custom cleaning script developed by Gwynne Chandler. Summaries of daily, weekly, and monthly means, minima, and maxima are provided for observation years. The data summaries and location information are available in user-friendly file formats that include: 1) a map (PDF) depicting the locations of in-stream thermographs (temperature sensors) for each processing unit, 2) a GIS shapefile (SHP) containing the location of these sensors for each processing unit, and 3) a tabular file (XLSX) containing observed temperature database summaries for data generally ranging from 1993 to 2015, dependent on the processing unit. Each point shapefile extent corresponds to NorWeST processing units, which generally relate to 6 digit (3rd code) hydrologic unit codes (HUCs). The tabular data can be joined to the observation point shapefile using the ID field OBSPRED_ID. The NorWeST NHDPlusV1 processing units include: Salmon, Clearwater, Spokoot, Missouri Headwaters, Snake-Bear, MidSnake, MidColumbia, Oregon Coast, South-Central Oregon, Upper Columbia-Yakima, Washington Coast, Upper Yellowstone-Bighorn, Upper Missouri-Marias, and Upper Green-North Platte. The NorWeST NHDPlusV2 processing units include: Lahontan Basin, Northern California-Coastal Klamath, Utah, Coastal California, Central California, Colorado, New Mexico, Arizona, and Black Hills.

Release Date
Spatial / Geographical Coverage Area
POLYGON ((-126.033239 49.353079, -100.25938 49.353079, -100.25938 30.784584, -126.033239 30.784584))
Spatial / Geographical Coverage Location
The data contains temperature readings taken in streams at various locations in California, Oregon, Washington, Nevada, Utah, Idaho, Montana, Wyoming, Colorado, Arizona, and New Mexico.
Forest Service Research Data Archive
Temporal Coverage
January 1, 1993 to December 31, 2015
Contact Name
Isaak, Daniel
Contact Email
Public Access Level
Program Code
005:059 - Department of Agriculture - Management Activities
Bureau Code
005:96 - Forest Service
Harvested from Forest Service
Harvest Source TitleForest Service
Harvest Source URIhttps://www.fs.usda.gov/rds/rdaoaipmh/o
Last Harvest PerformedThu, 08/06/2020 - 01:15

Metadata Source

U.S. Forest Service