ASCE 62-16,63-16 AND 64-16

Abstract

Scope: These guidelines intend to present design guidance for stormwater impoundments. The guidelines’ purpose is to focus on local and regional impoundments to manage, treat, and/or attenuate stormwater runoff, thus reducing the impact of stormwater on downstream areas due to land-use changes from water discharge and water quality perspectives. The guidelines do not address the broader issues associated with larger-scale flood control impoundments and reservoirs, which have unique and multipurpose aspects. These guidelines also do not address applications such as injection systems or impoundments of combined sewer overflows (CSOs). Both International System (SI) units and customary units are used throughout the guidelines for the narrative, figures, and tables. The formulas are written in dual units or written separately to show the use of either SI or customary units.