National Weather Service United States Department of Commerce

Water Temperature data  is collected daily from sources such as USGS and the US Army Corp of Engineers. Data are queried from the NCRFC database late morning each day. Water temperature data is important in hydrologic forecasting for monitoring formation of ice on rivers and lakes in our regions.  This is also monitored for impacts on navigation, recreation, natural habitats, and biological processes.


USGS Water Temperature


Additional sources for Water Temperature Information:

  • NOAA Great Lakes Environmental Research Laboratory Great Lakes Surface Temperatures
  • US Army Corps of Engineers sites along the Mississippi River report water temperature that can be found at