USGS scientists deploy SPMD and POCIS samplers to collect waterborne contaminants in Manoa Stream on Oahu, Hawaii.

Noteworthy

Press Releases

• USGS Assessment of Brackish Water Could Help Nation Stretch Limited Freshwater Supplies
• First-of-its-kind Interactive Map Brings Together 40 Years of Water-Quality Data
• 20 Years Researching Harmful Algal Blooms Supports Sustainable Water Supply in Wichita
• The Quality of the Nation's Groundwater: Progress on a National Survey (1/19/2017)

Featured Science:

• Spatial variability of harmful algal blooms in Milford Lake, Kansas, July and August 2015
• Why Monitor Water Quality? [1.7MB PDF]

Past featured science...

Water Quality Data

Today's Water Conditions

Get continuous real-time water-quality measurements from Water-Quality Watch maps.

Water Quality Portal (WQP)

Get current and historical USGS and EPA water-quality data at the WQP.

BioData

Get stream ecosystem aquatic bioassessment data from BioData.

For More Data

View a complete list of USGS water-quality data resources.

USGS in Your Area

USGS Water Science Centers are located in each state.

Water Quality Interdiscipline Links

Contents:

• Biology/Ecology
• Chemistry/Geology
• Geophysics
• Hydraulics/Hydrology
• Sediment
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• Statistics Newsgroups
• National Water-Quality Assessment Program (NAWQA): Collects and analyzes data and information in multiple river basins and aquifers, and aquatic ecosystems
• USGS National Research Program: Encompasses a broad spectrum of scientific investigations, including and integrating hydrological, geological, chemical, climatological, and biological information related to water resources and environmental hazards

Biology/Ecology

• USGS Biological Resources
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• National Water Quality Laboratory -- Biological Unit (Available to USGS employees only)

Chemistry/Geology

• Toxics Substances Hydrology Program
• USGS Geochemical Software
• Surface-water quality and flow modeling interest group (SMIG)
• Geologic Division Scientific Capabilities
  • Geochronology, Geochemistry, and Tracer Studies
  • Chemical Analyses

Geophysics

• Borehole Geophysics Applied to Geohydrology Project Page
• Office of Ground Water, Branch of Geophysics - Surface, Borehole, and Marine/Water-Borne Geophysics
• Geologic Division Scientific Capabilities -- Geophysical Analyses

Hydraulics/Hydrology

• Office of Ground Water -- Climate Response Network; Water Use; USGS National Aquifer codes; Geophysics; Ground-water models
• Office of Surface Water -- Real-time and historical streamflow data, suspended sediment, benchmark glaciers, hydraulics laboratory, flood frequency, global change, watershed modeling
• Surface-water quality and flow modeling interest group (SMIG)

Sediment

• Office of Surface Water
• Geologic Division Scientific Capabilities --Sedimentologic Analyses