Water, Energy, and Biogeochemical Budgets (WEBB) Program
Other USGS Research
Watersheds and Related Programs
USGS investigates watersheds at scales that range from the small research watersheds of the Water, Energy, and Biogeochemical Budget (WEBB) Program to the Nation's largest watersheds with data collected as part of the National Stream Quality Accounting Network (NASQAN).
Links to Long-Term Research Studies in Other Small Watersheds
- The Hydrologic Benchmark Network, a network of 53 sites (see map), selected in small undeveloped watersheds around the country.
National Stream Quality Accounting Network (NASQAN), a network of over 30 stations designed to monitor the water quality of Nation's largest river basins. Note, at its peak of operation in the 1980s, the network had about 500 sites.
- The National
Atmospheric Deposition Program/NationalTrends Network (NAPD/NTN): As the lead federal agency, The USGS supports 76 of the roughly 250 sites where acidity, nutrients and other major ions in precipitation are measured. The USGS also supports 6 of the approximately 100 sites in the NADP Mercury Deposition Network which measure total and methyl mercury in precipitation.
- The Tritium Network,
a network of stations established to provide baseline information
on the occurrence of tritium in the Nation's surface waters; tritium
data are also obtained at a number of precipitation stations.
- The Toxics
Substances Hydrology Program generally uses a watershed approach
in studying the behavior of toxic substances in the Nation's hydrologic
- The National
Water Quality Assessment (NAWQA) program is composed of study
units which are geographically defined by a combination of ground-
and surface-water features and which typically are larger than 10,000