StreamStats for New York was developed in cooperation the New York City Department of Environmental Protection, the New York State Department of Environmental Conservation, the New York Department of State, and the New York State Department of Transportation.
StreamStats for New York can be used to estimate (1) instantaneous flood discharges with exceedance probabilities of 0.8, 0.667, 0.5, 0.2, 0.1, 0.04, 0.02, 0.01, 0.005, and 0.002 (1.25-, 1.5-, 2-, 5-, 10-, 25-, 50-, 100-, and 500-year recurrence intervals, respectively) for ungaged, unregulated, rural streams throughout New York; and (2) bankfull discharge and channel characteristics of streams throughout New York. The reports below present the regression equations used to estimate these statistics, and describe the methods used to develop the equations and to measure the basin characteristics used in the equations. Users should familiarize themselves with the reports before using StreamStats to obtain estimates of streamflow statistics for ungaged sites.
- Lumia, Richard, Freehafer, D.A., and Smith, M.J., 2006, Magnitude and Frequency of Floods in New York: U.S. Geological Survey Scientific Investigations Report 2006–5112, 152 p.
- Mulvihill, C.I., Baldigo, B.P., Miller, S.J., and DeKoskie, Douglas, 2009, Bankfull Discharge and Channel Characteristics of Streams in New York State: U.S. Geological Survey Scientific Investigations Report 2009-5144, 51 p
Computations of flood discharges for the exceedance probabilities listed above have been updated at many gaged locations across New York (Wall and others, 2014). These data can be viewed by clicking on the Query Streamgages button on the Exploration Tools list and then clicking on a streamgage icon. Select the "StreamStats gage page" link in the pop-up window a tabulation of the data that is available at the station.
In addition to solving the above regression equations, New York StreamStats can be used to delineate drainage areas and to provide the basin characteristics that are needed as input for the New York Streamflow Estimation Tool (NYSET) program, which can estimate daily mean streamflows for water years 1961-2010 for user-selected sites on ungaged streams. NYSET can also compute 7-day low-flow statistics (7Q2 and 7Q10), as well as monthly probability flows for the 1-, 2-, 5-, 10-, 15-, 20-, 25-, 30-, 35-, 40-, 45-, 50-, 55-, 60-, 65-, 70-, 75-, 80-, 85-, 90-, 95-, 98-, and 99-percent exceedances. The estimates provided by NYSET assume that flows at the selected site are minimally altered by human activities. Additional information on the NYSET program, including instructions for downloading, installing, and operating the program are at the following web page:
Click on this link to obtain general information on the New York application, as well as specific sources and computation methods for basin characteristics.
Related Content
Maximum known stages and discharges of New York streams and their annual exceedance probabilities through September 2011
Bankfull discharge and channel characteristics of streams in New York State
Magnitude and Frequency of Floods in New York
Related Content
- Publications
Maximum known stages and discharges of New York streams and their annual exceedance probabilities through September 2011
Maximum known stages and discharges at 1,400 sites on 796 streams within New York are tabulated. Stage data are reported in feet. Discharges are reported as cubic feet per second and in cubic feet per second per square mile. Drainage areas range from 0.03 to 298,800 square miles; excluding the three sites with larger drainage areas on the St. Lawrence and Niagara Rivers, which drain the Great LakeAuthorsGary R. Wall, Patricia M. Murray, Richard Lumia, Thomas P. SuroBankfull discharge and channel characteristics of streams in New York State
Equations that relate drainage area to bankfull discharge and channel characteristics (such as width, depth, and cross-sectional area) at gaged sites are needed to help define bankfull discharge and channel characteristics at ungaged sites and can be used in stream-restoration and protection projects, stream-channel classification, and channel assessments. These equations are intended to serve asAuthorsChristiane I. Mulvihill, Barry P. Baldigo, Sarah J. Miller, Douglas DeKoskie, Joel DuBoisMagnitude and Frequency of Floods in New York
Techniques are presented for estimating the magnitude and frequency of flood discharges on rural, unregulated streams in New York, excluding Long Island. Peak-discharge-frequency data and basin characteristics from 388 streamflow-gaging stations in New York and adjacent states were used to develop multiple linear regression equations for flood discharges with recurrence intervals ranging from 1.25AuthorsRichard Lumia, Douglas A. Freehafer, Martyn J. Smith