Status report on flood warning systems in the United States
One of the major changes in flash-flood mitigation in the past decade is the number of communities that have implemented warning systems. The authors conducted a survey of 18 early-warning systems in the United States developed by communities or regions to provide protection against flash floods or dam failures. Problems revealed by the study included the following: equipment malfunctions, inadequate maintenance funding, inconsistent levels of protection and expenditure, inconsistent levels of expectations and formalization, varying levels of local commitment to the systems, underemphasis on response capability, and a tendency to over-rely on warning systems. The study also revealed some unanticipated benefits experienced by the survey communities: the warning systems serve as valuable data collection tools, a great deal of interagency cooperation has been demonstrated, and warning systems offer increased alternatives to structural modification projects. The interjurisdictional nature of drainage basins, the evolving roles of the various federal agencies involved in flood mitigation, and the lack of governmental standards of operations for flood warning systems are issues that must be considered as communities make decisions regarding the adoption of warning systems. The record on these systems is too short for a precise assessment of how successful they are; however, results of the study indicate that if the goal of reducing loss of life and property from flooding is to be achieved, warning systems must be only one part of a comprehensive flood loss reduction program.
Key wordsAutomated warning systems Flash flood Flood Flood detection systems Flood warning systems Warning systems
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- Barrett, C. 1986. Local flood warning systems. Pages 1–5in Proceedings of a seminar on local flood warning-response systems. US Army Corps of Engineers, Davis, California.Google Scholar
- Curtis, D. 1986. Role of private sector in flood warning systems. Pages 37–45in Proceedings of a seminar on local flood warning-response systems. US Army Corps of Engineers, Davis, California.Google Scholar
- French, J., R. Ing, S. Von Allmen, and R. Wood. 1983. Mortality from flash floods: A review of the national weather service reports, 1969–81.Public Health Reports 98(6):584–588.Google Scholar
- Gruntfest, E. 1987. Flash flood/dam failure warning system survey. US Bureau of Reclamation, Denver, Colorado. 73 pp.Google Scholar
- Hydrology Subcommittee of the Federal Interagency Advisory Committee on Water Data. 1985. Guidelines on community local flood warning and response systems. United States Geological Survey, Reston, Virginia. 104 pp.Google Scholar
- Kircher, T., J. Nelson, and J. French. 1987. Avoidance of death and injury through monitoring of dams and flood evacuation in Essex, Connecticut, June 1982.Disasters 11(2):117–119.Google Scholar
- Mooney, L. 1983. Applications and implications of fatality statistics to the flash flood problem. Pages 127–129in Fifth conference on hydrometeorology, 17–19 October 1983. American Meteorological Society, Boston.Google Scholar
- Platt, R. (Ed.). 1987. Regional management of metropolitan floodplains. The University of Colorado, Institute of Behavioral Science, Boulder, Colorado. 334 pp.Google Scholar
- Platt, R., and S. Cahail. 1987. Automated flash flood warning systems.Applied Geography 7:289–301.Google Scholar