Quebrada Margarita Stabilization


The firm provided Civil Design services for the stabilization of the streambanks from erosion and streambed from scour. Quebrada Margarita is a confined creek located in a highly developed zone with its watershed completely developed, resulting in very high velocity peak flows. These flows were quickly eroding the streambanks as well as causing the scour of a channeled portion of the creek, putting in imminent danger life and property alike. The countermeasures constructed involved a transitional stretch between the concrete and earth channel. This transition included a section of 14 meters with a 12.7% slope, with rocks one meter in diameter (vortex weirs) that will protect this section from erosion and scour. A total of three “Vortex Weirs” were installed inside the creek channel to redirect the streamflow away from the bank to minimize further erosion.