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DATA CENTER

• Streamflow
  • Real-time Data
  • Historical Data
  • USGS WaterWatch
    • Floods
    • Droughts
• Ground Water
  • Real-time Data
  • Historical Data
  • Groundwater networks
    • Active Water Levels
    • Climate Response
• Water-Quality
  • Real-time Data
  • Historical Data
  • Water-Quality Watch
• Weather
  • Real-time Data
    • Precipitation
    • Air Temperature
    • Air Pressure
    • Relative Humidity
    • Wind
• Other
  • Annual Data Reports
  • NWIS Mapper
  • Instantaneous Data Archive
  • Cooperative Water Program Highlights

ABOUT THE ILLINOIS
Water Science Center

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USGS IN YOUR STATE

USGS Water Science Centers are located in each state.

Hydrologic Information and Data for Illinois

The U.S. Geological Survey currently operates over 300 data collection sites in Illinois for acquiring information on surface-water, ground-water, water-quality, and precipitation. About 200 of the sites are equipped with satellite telemetry, which provides real-time data via GOES satellites and downlinks, which enables the posting of data to the Web for public dissemination.

Realtime Streamflow, Precipitation, and Groundwater Conditions
• Realtime Streamflow (NWISWeb)
• Map of Daily Streamflow Conditions for Illinois or the U.S.
• Illinois Department of Natural Resources Summary Table
• Salt Creek at Wood Dale, IL (05531175) Webcam
• Chicago Waterways Observatory Streamgages
• NWS Quantitative Precipitation Forecasts
• Hear an Overview about USGS Streamgages
• How does the USGS collect streamflow data?

Hydrologic Mapping Tools
• Streamgage-linked Inundation Mapping Websites in Illinois
• Illinois StreamStats Tool for Basin Delineation and Flow Statistics
• Real-Time Precipitation Data
• Ground Water Climate Response Network
• Illinois Water-Quality Information Mapping Tool (external site)

Historical Conditions
• Historical Streamflow
• Illinois Annual Water Data Report
• Illinois Water-Data Report--2005 (Includes historical data)

Hydrologic Conditions (State and National)
• Current Illinois Flooding
• Flood and High Flow Conditions for Illinois or the U.S.
• FEMA Flood and Hazards Information
• NWS Precipitation Frequency Current Projects
• NWS Illinois Daily Climate Maps

On-Line Databases and Resources
• USGS National Water Quality Assessment Data Warehouse
• Illinois Hydrologic Units Map
• Real-Time Streamflow-Gaging Stations GIS Database
• NWS Precipitation Frequency Data Server
• USGS Natural Hazards Support System
• The National Map
• USGS Map Locator and Downloader

Data-Related Articles and Reports
• Estimated Use of Water in the United States in 2005
• Streamflow Trends in the United States
• Changes in Streamflow Timing in New England During the 20th Century
• Changes in Streamflow Timing in the Western United States in Recent Decades
• Trends in the Water Budget of the Mississippi River Basin, 1949-1997
• The Great Flood of 1993 on the Upper Mississippi River--10 Years Later
• National Reconnaissance of Pharmaceuticals, Hormones, and Other Organic Wastewater Contaminants in Streams of the U.S., 1999-2000
• U.S. Stream Flow Measurement and Data Dissemination Improve
• National Survey of MTBE and Other VOCs in Community Drinking-Water Sources