Stormbloc subsurface storage media combined with Reg-U-Flo vortex valve flow control are made available by Hydro Intl. Implement LID in ultra-urban environments by taking advantage of 95% storage volumes and flow control that limits flow with twice the opening size. Offered as features in HydroCAD, efficiently model Stormbloc and Reg-U-Flo valves as discrete storage and infiltration used to capture runoff at the source.
