A subdivision in Corvallis, Oregon, is shown in Figure P6.21. Rational method design is performed using the

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A subdivision in Corvallis, Oregon, is shown in Figure P6.21. Rational method design is performed using the 10 - yr return period IDF curve of the Oregon Department of Transportation (1990) for Zone 8, which may be approximated as follows:
A subdivision in Corvallis, Oregon, is shown in Figure P6.21.

With i in in./hr and tr in minutes. The standard error of estimate is 0.0079 in./hr.

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Hydrology and Floodplain Analysis

ISBN: 978-0132567961

5th edition

Authors: Philip B. Bedient, Wayne C. Huber, Baxter E. Vieux

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