The Software and Predictive Models Web site is maintained by the US Geological Survey Fort Collins Science Center. The unique research tools offered free for download are products developed by scientists working at the center and are therefore only available from this site. An example is the Instream Flow Incremental Methodology for "approaching various issues related to developing an instream flow policy that incorporates multiple or variable flow rules to meet the needs of the aquatic ecosystem while considering habitat-flow relationships, timing of flow events, institutional arrangements, and water supply." Others include a moist-soil management advisor, a physical habitat assessment program for rivers, stream temperature models, and many other interesting physical and biological products that scientists from varied backgrounds may find useful and valuable for their research.