This is the second report in a series of U.S. Geological Survey Hydrologic Investigations Atlases to further supplement the National Park Service general management and development concept plan for the Ozark National Scenic Riverways (National Park Service, 1981) in southeastern Missouri (fig. 1). The technical basis on which the National Park Service can develop flood-management plans for use in evaluating their existing or future developments at Akers and Alley Spring recreational areas is given in Hydrologic Investigations Atlas HA-712-A (Alexander, in press).
The Ozark National Scenic Riverways, administered by the National Park Service, is an extensively used recreational area where approximately 2 million visitors per year (M.E. Hunter, National Park Service, oral commun., 1985) participate in a wide range of river-use and land-based activities. Visitor areas along the 134-mi (mile) reach of the Current River and its principal tributary, Jacks Fork, range from highly-developed areas mostly along the upper Current River to primitive camping areas and river accesses along the Jacks Fork and downstream reach of the Current River. Most facilities at these developments are in or near flood-prone areas. Therefore, because of visitor safety, a major consideration of the National Park Service is the implementation of a flood-warning system.
