1. Nueces Bay Rookery Island Restoration Project, Corpus Christi, TX
This project’s goals were to enhance five (5) existing rookery islands located in Nueces Bay (near Corpus Christi, TX). These existing islands were constructed oyster mining activities dating back to the ‘60s. In the early 2000’s the CBBEP installed geotextile tube shoreline protection structures in a bid to protect the islands for wave forces that have caused erosion. These islands act as vibrate rookery nesting islands for migratory birds (nesting from February to late August each year). The island locations are ideally located in the middle of the bay to protect from natural predators. The initial geotextile tube construction was beginning to fail resulting in the need for a more long-term solution, coupled with raising and enhancing each island to maximize nesting opportunities. Scheibe was contracted to evaluate the initial feasibility of enhancing these islands, followed by final construction plan development, and construction phase services (to occur in late 2018). The project included geotechnical analysis, field topographic surveys, hydrographic surveys, coordination with oil/gas pipeline crossings, sediment sampling, sediment toxicity testing, wave modeling, shoreline rock revetment design, wave run-up modeling, Nationwide permitting through the USACE (NWP 27), coordination with GLO on state land leasing requirements, oyster surveys, seagrass surveys, resource agency collaboration, and consideration of island cap material (including oyster shell sourcing). Project also included living shoreline alternatives for shoreline protection measures. This project is currently under construction, with anticipated completion schedule set for Spring 2020.
2. Bahia Atascosa National Wildlife Refuge Ecosystem Restoration Project, Cameron Co., TX
This project’s goals were to enhance five (5) existing rookery islands located in the Bahia Grande Bay Complex (near Brownsville, TX), and provide enhanced tidal circulation between Bahia Grande and Paso Corvinas estuaries. Two of the existing islands are natural and three are the result of man-made improvements to a relic railroad track that bisects the Bahia complex. This project included 2D CMS-FLOW and CMS-WAVE modeling of a portion of Laguna Madre, the Brownsville Ship Channel, and the entire Bahia Grande Complex. Circulation modeling included simulates of recent localized tidal events and the historic Hurricane Allen (of 1980). Resulting recommendations include offshore breakwaters, island regrading/stabilization, and channel cuts connecting the Bahia to the Paso Corvinas. This project is slated for completion of preliminary design in January 2020.