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Estimating Storm Water Runoff - PDHonline.com

PDHonline Course H119 (2 PDH) Estimating Storm Water Runoff2012 Instructor: John Poullain, PEPDH Online | PDH Center5272 Meadow Estates DriveFairfax, VA 22030-6658 Phone & Fax: Approved Continuing Education ProviderFlorida Erosion and Sediment Control Inspector's Manual CHAPTER 3 Estimating STORMWATER Runoff INTRODUCTION 1 DESIGN STORMS 2 HYDROGRAPHS 3 GENERAL PROCEDURE 5 RATIONAL METHOD 7 OTHER METHODS 23 CHAPTER NOTE Estimating stormwater Runoff is a basic initial step in the design of the stormwater management system as well as the erosion control plan.

Chapter 3 - Estimating Stormwater Runoff 3.3 HYDROGRAPHS A hydrograph is a graph displaying some property of water flow, such as stag e (i.e. water level), discharge, velocity, etc., versus time. For displaying runoff characteristics of a water shed, the hy drograph i s one of dischar ge (cubi c feet per second) versus time (hours).

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