This letter is a re-issue of Illinois rainfall frequency relations that were presented in Technical Letter 1 (February 1959) and Technical Letter 4 (March 1960), which are now out of print. These data remain valid and have been combined here for convenience.
Illinois State Water Survey
Series/Report Name or Number
ISWS Miscellaneous Publication MP-034
ISWS Technical Letter no. 13
Type of Resource
Copyright and License Information
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