Flood-Frequency Data for Six Selected Streamgages Following the Central New York Flood of October 31

Dates

Publication Date: 2024-01-16
Start Date: 1898
End Date: 2020

Citation

Graziano, A.P., Gazoorian, C.L., Smith, T.L., and Lilienthal, A.G., 2024, Flood-frequency data for six selected streamgages following the central New York flood of October 31 – November 3, 2019: U.S. Geological Survey data release, https://doi.org/10.5066/P9SCOJ7M.

Summary

This U.S. Geological Survey (USGS) data release contains batch formatted annual peak streamflow data (PkFlows_AllSites.txt) through the 2020 water year for six selected USGS streamgages (01321000, 01342797, 01343060, 01346000, 01347000, and 01348000) that recorded the flood of October 31 – November 3, 2019, which severely affected the Mohawk Valley and southern Adirondack region in central New York State. This data release also contains batch formatted specification (PkFlows_AllSites.psf) and output (PEAKFLOWS_ALLSITES.PRT) files from log-Pearson type III (LPIII) flood-frequency analysis of the annual peak streamflow data in version 7.4 of the USGS PeakFQ software (Flynn and others, 2006), which implements the Bulletin 17C (England [...]

Summary

This U.S. Geological Survey (USGS) data release contains batch formatted annual peak streamflow data (PkFlows_AllSites.txt) through the 2020 water year for six selected USGS streamgages (01321000, 01342797, 01343060, 01346000, 01347000, and 01348000) that recorded the flood of October 31 – November 3, 2019, which severely affected the Mohawk Valley and southern Adirondack region in central New York State. This data release also contains batch formatted specification (PkFlows_AllSites.psf) and output (PEAKFLOWS_ALLSITES.PRT) files from log-Pearson type III (LPIII) flood-frequency analysis of the annual peak streamflow data in version 7.4 of the USGS PeakFQ software (Flynn and others, 2006), which implements the Bulletin 17C (England and others, 2018) methodology for determining flood flow frequency. A comma separated values file (FloodFrequencyEstimates.csv) with estimates of flood magnitudes for selected annual exceedance probabilities from three different types of flood-frequency analysis (LPIII, regional regression equations, and weighted LPIII) is also included.

The basins of the selected streamgages include the Sacandaga River basin (located within the upper Hudson River basin), and the East and West Canada Creek basins (located within the Mohawk River basin). Annual peak streamflow data were obtained from the USGS National Water Information System (U.S. Geological Survey, 2016). Considerations that informed the PeakFQ specifications for all six streamgages (including the effect of regulation, differences in station and regional skew, and other considerations) are discussed in Graziano and others (2024). Regional regression equation estimates were obtained for the locations of the four streamgages where streamflow is unregulated (01321000, 01342797, 01343060, and 01348000) using the StreamStats web application (U.S. Geological Survey, 2019), which presently utilizes equations in Lumia and others (2006). Weighted LPIII estimates (for the same four streamgages where streamflow is unregulated) were computed by weighting the (at-site) LPIII estimates with the regional regression equation estimates (Lumia and others (2006), equation 3). The weighted LPIII estimates are considered the most accurate of the three types of flood-frequency estimates. For this analysis, stationarity in the annual peak streamflow records was assumed after visual inspection of the records indicated no clear trends.

Contacts

Point of Contact :: Alexander P Graziano
Originator :: Alexander P Graziano, Christopher L Gazoorian, Travis L Smith, Arthur G Lilienthal
Metadata Contact :: Alexander P Graziano
Publisher :: U.S. Geological Survey
USGS Mission Area :: Water Resources
SDC Data Owner :: New York Water Science Center
Distributor :: U.S. Geological Survey - ScienceBase

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CentralNY_FloodFrequency.xml Original FGDC Metadata	View	28.14 KB	application/fgdc+xml
PKFLOWS_ALLSITES.PRT		135.79 KB	text/plain
PkFlows_AllSites.psf		7.33 KB	application/x-font-linux-psf
PkFlows_AllSites.txt		32.58 KB	text/plain
FloodFrequencyEstimates.csv		3.1 KB	text/csv

Related External Resources

Type: Web Link

PeakFQ software portal	https://water.usgs.gov/software/PeakFQ/

Type: Citation

England, J.F., Jr., Cohn, T.A., Faber, B.A., Stedinger, J.R., Thomas, W.O., Jr., Veilleux, A.G., Kiang, J.E., and Mason, R.R., Jr., 2018, Guidelines for determining flood flow frequency—Bulletin 17C (ver. 1.1, May 2019) : U.S. Geological Survey Techniques and Methods, book 4, chap. B5, 148 p.	https://doi.org/10.3133/tm4B5
Flynn, K.M., Kirby, W.H., and Hummel, P.R., 2006, User’s manual for program PeakFQ, annual flood-frequency analysis using Bulletin 17B guidelines: U.S. Geological Survey Techniques and Methods, book 4, chap. B4, 42 p.	https://doi.org/10.3133/tm4B4
Lumia, R., 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.	https://doi.org/10.3133/sir20065112
U.S. Geological Survey, 2016, National Water Information System data available on the World Wide Web (USGS Water Data for the Nation), accessed August 29, 2023.	https://nwis.waterdata.usgs.gov/usa/nwis/peak
U.S. Geological Survey, 2019, The StreamStats program, accessed August 29, 2023.	https://streamstats.usgs.gov/ss/

Type: Related Primary Publication

Graziano, A.P., Gazoorian, C.P., Smith, T.L., and Lilienthal, A.G., III, 2024, Flood of October 31 to November 3, 2019, in the East Canada Creek, West Canada Creek, and Sacandaga River basins in central New York: U.S. Geological Survey Scientific Investigations Report 2023–5126, 37 p.	https://doi.org/10.3133/sir20235126

Purpose

These data and statistics were compiled to support Graziano and others (2024), which documents the historic flood of the Mohawk Valley and southern Adirondack region in central New York State from October 31 to November 3, 2019, characterizes the extreme nature of the flood, and aims to support future flood-mitigation strategies.

Flood-Frequency Data for Six Selected Streamgages Following the Central New York Flood of October 31 – November 3, 2019

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