An origin-destination model of recreational boating Kelly, T. 1993. An origin-destination model of recreational boating on the Twin Cities reaches of the Mississippi and St. Croix River. Minnesota Department of Natural Resources, St. Paul, Minnesota. Reprinted by U.S. Fish and Wildlife Service, Environmental Management Technical Center, Onalaska, Wisconsin, March 1993. EMTC 93-R028. 13 pp. + Appendixes. (NTIS #PB94-109139) ABSTRACT The 1991 river boating study focused on the Twin Cities metropolitan area. It encompassed the Mississippi River from Coon Rapids Dam to Dam 5, and the commercially navigable reaches of the lower St. Croix and Minnesota River. The study was conducted from July 3 to September 2. The primary goal of the study was to collect the information needed to construct a mathematical origin-destination model of boat trips in the study area and, ultimately, to build such as model. The model would permit the manipulation of boat access development (locations and sizes of ramps and marinas) and would estimate the resultant impact of these manipulations on summer boating patterns on different reaches of the rivers. A similar model has been developed for lakes. It proved useful in access development planning, as well as in the basic understanding of how riparian development affects surface water use. The lake model, however, deals with a simpler case than the one here, because it treats the lake as the sole origin and sole destination of boat trips. The river model, to be useful, has to deal with multiple origins and multiple destinations, all within the context of different types of access development and significant time periods (day of week and time of day). Since the study team had not constructed such a model before, it took this study from the outset as a "pilot," which recognized that surprises were likely to be encountered as the study progressed. KEYWORDS Mississippi River, origin-destination model, recreational boating