National Weather Service Training Center

Hydrology Data Links

The National Weather Service hydrometeorology programs rely on data from a variety of sources. This page provides links to descriptions and online data sources. Select from the image map or the list of links below.

REAL-TIME AND NEAR REAL-TIME DATA LINKS

RAWS and METAR Hourly Wx Obs - Western Region Climate Center

SNOTEL and Snow Course Data Links - NRCS

NWS National Operational Hydrologic Remote Sensing Center (NOHRSC) - USA snow data

Real-time Streamflow Data - USGS

DATA COLLECTION SYSTEMS

Automated Local Flood Warning Systems: Integrated Flood Observing and Warning System (IFLOWS); Automated Local Evaluatiion in Real Time (ALERT); IFLOWS Automated Flood Warning Systems; IFLOWS Automated Flood Warning Systems - development history; ALERT Flood Warning Systems - technology and user group information; NWS Automated Local Flood Warning Systems Handbook
Automative Surface Observing System (ASOS) and Automated Weather Observation System (AWOS): Automated Surface Observations - Office of Systems Operations; What is ASOS?
Cooperative Observer Program: NWS Cooperative Observer Program
Remote Automatic Weather Stations (RAWS): Guide to RAWS observations - NWS Boise Fire Wx page
Snow Data: Guide to the SNOTEL Monitoring Network; SNOTEL Data Collection Information - NRCS; NWS NOHRSC - explanation of remote sensing technology
Soil Data: Soil Climate Analysis Network (SCAN) - NRCS Water and Climate Center
U.S. Geological Survey Stream Gage Data: Guide to the USGS Stream Gaging Program

DATA DISSEMINATION AND STORAGE

Data Retrieval: NRCS Data Acquisition Technology How do we get data? - Mid-Atlantic River Forecast Center What data do we get? - Mid-Atlantic River Forecast Center
Geostationary Operational Environmental Satellite (GOES): GOES Data Distribution System - list of cooperators GOES Spacecraft Diagram
Hydrometeorological Automated Data System (HADS): What is HADS? HADS Home Page HADS Users Handbook HADS Database - List DCPs by Hydrologic Service Area
Standard Hydrometeorological Exchange Format (SHEF): SHEF Element Format, Duration Code - WHFS Support Group, NOAA staff only

OTHER RELATED SITES

Precipitation Climatology: Probable Maximum Precipitation Analysis - NWS OH Hydrologic Design Studies Center; PRISM Precipitation Normals Analysis - maps by state and region - Western Region Climate Center; Western U.S. Precipitation Frequency Analysis Maps - Western Region Climate Center