Data Online

National Water Information System: Web Interface (NWISWeb)

Water data for Iowa - Current and historic data for surface-water and groundwater sites

Real-time Streamflow
Real-time Lakes & Reservoirs
Real-time Groundwater
Real-time Water-Quality
Real-time Precipitation

WaterWatch - Maps & graphs of current streamflow conditions.
GroundwaterWaterWatch - Maps & graphs of current groundwater conditions.
Water Quality Watch - Maps & graphs of current water-quality conditions.
WaterAlert - Receive instant updates on current water conditions via email or text messages.

Annual Water-Data Reports

Water-resources data are published annually by the U.S. Geological Survey for use by engineers, scientists, managers, educators, and the general public. Beginning with water year 2006, the annual Water-Data Reports have been published as individual electronic Site Data Sheets in PDF format.

2006 to current

Reports for water years prior to 2006 are available from the Publications Warehouse. For water years 1971 to 2005, the annual Water-Data Reports were published on a state-boundary basis. Prior to 1971, water-resources data were published in a series of Water-Supply Papers and in other reports.

2005
2004: Volume 1, Volume 2
2003: Volume 1, Volume 2
2002: Volume 1, Volume 2
2001: Volume 1, Volume 2
2000: Volume 1, Volume 2
1999: Volume 1, Volume 2
1998: Volume 1, Volume 2