Frequency Distributions of Heavy Precipitation in Illinois: Updated Bulletin 70

Angel, James; Markus, Momcilo

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https://hdl.handle.net/2142/103172 Copy

Description

Title

Frequency Distributions of Heavy Precipitation in Illinois: Updated Bulletin 70

Author(s)

• Angel, James
• Markus, Momcilo

Issue Date

2019-03

Keyword(s)

• Climate
• precipitation
• climate change
• Illinois

Geographic Coverage

Illinois

Abstract

This study was designed to update the Illinois State Water Survey (ISWS) Bulletin 70,evaluating rainfall frequency relations in Illinois using current precipitation datasets. The studyprimarily used the National Oceanic and Atmospheric Administration (NOAA) daily precipitationdata from 1948 to 2017 to perform regional frequency analysis (RFA) using the L-momentsapproach. Additional information on precipitation relationships for less than 24 hours wereobtained from NOAA hourly precipitation data from 1948 to 2014 and Cook CountyPrecipitation Network (CCPN) data from 1989 to 2016. Precipitation frequency relations weredeveloped for storm durations from 1 to 240 hours and for recurrence intervals from 2 to 500years. The results are presented for the same 10 geographic sections as in Bulletin 70 (Figure 1) to maintain the continuity of hydrologic studies and compatibility with regulations.

Publisher

Illinois State Water Survey

Series/Report Name or Number

ISWS Contract Report CR-2019-05

Type of Resource

text

Language

en

Permalink

http://hdl.handle.net/2142/103172

Sponsor(s)/Grant Number(s)

Illinois Department of Commerce and Economic Opportunity

Copyright and License Information

Copyright ... University of Illinois Board of Trustees. All rights reserved. This document is a product of the Illinois State Water Survey, and has been selected and made available by the Illinois State Water Survey and the University Library, University of Illinois at Urbana-Champaign. It is intended for research and educational use, and proper attribution is requested.

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