StreamStats for New Jersey can be used to estimate instantaneous flood discharges with exceedance probabilities of 0.5, 0.2, 0.1, 0.04, 0.02, 0.01, and 0.002 for ungaged, unregulated or slightly regulated, non-tidal streams in New Jersey. These exceedance probabilities correspond to recurrence intervals of 2-, 5-, 10-, 25-, 50-, 100-, and 500-years, respectively. The report below presents the regression equations used to estimate the peak-flow statistics, describes the errors associated with the estimates, and describes the methods used to develop the equations and to measure the basin characteristics used in the equations. Users should familiarize themselves with the report before using StreamStats to obtain estimates of streamflow statistics for gaged and ungaged sites.
- Watson, K.M., and Schopp, R.D., 2009, Methodology for estimation of flood magnitude and frequency for New Jersey streams: U.S. Geological Survey Scientific Investigations Report 2009-5167
NOTE: Scientific Investigations Report 2009-5167 "Methodology for Estimation of Flood Magnitude and Frequency for New Jersey Streams" has been revised, May 2010. The flood-frequency regression equations, regional constant coefficients, and average standard errors have been updated for this report. The updates are reflected in the current New Jersey StreamStats application.
General information on the Interactive Map application, as well as specific sources and computation methods for basin characteristics are available here.
Footnote for New Jersey StreamStats: Although 1990 population density was used for the development of the regression equations in SIR 2009-5167, the New Jersey StreamStats application will offer the more current 2000 population-density data.
StreamStats for New Jersey was developed in cooperation the New Jersey Department of Environmental Protection and the U.S. Army Corps of Engineers.
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