This is a beta version of the Iowa Watershed Approach Information System (IWAIS) which is always in active development cycle with many experimental and advanced functionality. The IWAIS, its functions and all information are provided on an "as is" and "as available" basis.

Neither the University of Iowa nor Iowa Institute of Hydroscience & Engineering (IIHR) gives any warranties, whether expressed or implied, as to the suitability or usability of the IWAIS, its functions or any of its content. The University of Iowa and IIHR will not be liable for any loss, whether such loss is direct, indirect, special or consequential, suffered by any party as a result of their use of the IWAIS, its functions, or any of its content. By using IWAIS, you are accepting these terms.

Flood Maps: Maps represent estimated extents of flood waters originating from the identified flood source(s) and are based upon stream geometry and infrastructure present in the year indicated. Maps are provisional and not intended for regulatory use.

IWAIS is developed using latest web technologies. Please use latest version of a modern browser (e.g. Google Chrome) and high screen resolution for better user experience.