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Worksheet for computing annual exceedance probability flood discharges and prediction intervals at stream sites in Connecticut

Dates

Publication Date
Time Period
2020-03-10

Citation

Ahearn, E.A., and Veilleux, A., 2020, Worksheet for computing annual exceedance probability flood discharges and prediction intervals at stream sites in Connecticut: U.S. Geological Survey data release, https://doi.org/10.5066/P9EWHAYW.

Summary

The U.S. Geological Survey (USGS), in cooperation with Connecticut Department of Transportation, completed a study to improve flood-frequency estimates in Connecticut. This companion data release is a Microsoft Excel workbook for: (1) computing flood discharges for the 50- to 0.2-percent annual exceedance probabilities from peak-flow regression equations, and (2) computing additional prediction intervals, not available through the USGS StreamStats web application. The current StreamStats application (version 4) only computes the 90-percent prediction interval for stream sites in Connecticut. The Excel workbook can be used to compute the 70-, 80-, 90-, 95-, and 99-percent prediction intervals. The prediction interval provides upper [...]

Contacts

Point of Contact :
Elizabeth A Ahearn
Originator :
Elizabeth A Ahearn, Andrea G Veilleux
Metadata Contact :
Elizabeth A Ahearn
Publisher :
U.S. Geological Survey
Distributor :
U.S. Geological Survey - ScienceBase
SDC Data Owner :
New England Water Science Center
USGS Mission Area :
Water Resources

Attached Files

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Worksheet computing flood discharges and prediction intervals in CT, SIR 2020-5054.xlsx 65.04 KB application/vnd.openxmlformats-officedocument.spreadsheetml.sheet

Purpose

The purpose of this data release is to provide users with a method for computing flood discharges for the 50- to 0.2-percent annual exceedance probabilities and computing the 70-, 80-, 90-, 95-, and 99-percent prediction intervals for the estimated flood discharges. The prediction intervals provide a confidence level in the accuracy of the estimates and are described in the published companion report: Ahearn and Hodgkins, 2020, Estimating flood magnitude and frequency on streams and rivers in Connecticut, based on data through water year 2015: U.S. Geological Survey Scientific Investigations Report 2020-5054, 42 p., https://doi.org/10.3133/sir20205054.

Map

Spatial Services

ScienceBase WMS

Communities

  • USGS Data Release Products
  • USGS New England Water Science Center

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Additional Information

Identifiers

Type Scheme Key
DOI https://www.sciencebase.gov/vocab/category/item/identifier doi:10.5066/P9EWHAYW

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