The 2022 update of Anne Arundel County’s SPSC Design Guidelines for stormwater professionals is now available!

Step Pool Stormwater Conveyance Systems (SPSCs) are open-channel conveyance structures that convert, through attenuation ponds and a sand seepage filter, surface storm flow to shallow groundwater flow. These structures feature surface/subsurface runoff storage seams and an energy dissipation design that is aimed at attenuating the flow to a desired level through energy and hydraulic power equivalency principles.

Anne Arundel County’s 2022 SPSC Design Guidelines define the pretreatment, recharge, and water quality sizing criteria for implementing these structures and closely resemble the State of Maryland’s criteria for a typical stormwater filtering device. This version of the SPSC Guidelines builds upon and updates the original manual (Revision 5a: Updated 2012) to include corrections, revisions, and current best practices for design.

or visit https://www.aarivers.org > Restoration > Step Pool Stormwater Conveyance (SPSC)