Illinois State Library

Electronic Documents of Illinois

Electronic Documents of Illinois

Document Identification

Users should pay particular attention to version identification or dates of publication of documents retrieved. Earlier, possibly superseded, versions of documents are also stored here.

Title

  • Time distributions of heavy rainstorms in Illinois

Description

  • This document provides the best available in formation on the time-distribution characteristics of heavy rainstorms at a point and on small basins in Illinois and the Midwest. It is recommended for use in conjunction with Illinois State Water Survey Bulletin 70 and Circular 172 for runoff computations related to the design and operation of runoff control structures. It is also useful for post-storm assessment of individual storm events in weather modification operations. Information is presented in the form of families of curves derived for groups of storms categorized according to whether the greatest percentage of total storm rainfall occurred in the first, second, third, or fourth quarter of the storm period. The time distributions are expressed as cumulative percentages of storm rainfall and storm duration to enable comparisons between storms. The individual curves for each storm type provide estimates of the time-distribution characteristics at probability levels ranging from 10% to 90% of the total storm occurrences. Explanations are provided of how to use the results in design problems.

Originally Deposited as: 999999993833

Published By:
Phone Number:

Language(s): EN-English

Volume or Year: 1990
Number or Issue:

Date Created: 9 24 2004
Date Last Modified: 5 13 2003

Librarian Remarks:

Access This Publication

1. Time distributions of heavy rainstorms in Illinois (20060928185026_ISWSC-173.pdf).
Document Size:271413 Software: Adobe Acrobat Version: 7.0