WEST FORK SAN JACINTO RIVER
EMERGENCY DREDGING: Phase 1
Houston, TX
PROJECT DETAILS
PROJECT CLIENT
USACE – Galveston District
DREDGE QUANTITY
1,920,700 cubic yards
VESSEL TYPE
Cutter Suction Dredge
DREDGES WORKED
LP and General Pershing
COMPLETION
May, 2019
ABOUT THIS PROJECT
The purpose of this project was to improve river hydraulics by dredging a channel approximately 400 ft wide and 14,200 lf long. A total of 1,920,000 cy of sandy material, accumulated as a result of Hurricane Harvey, was removed by lowering the river bottom 6 to 8 ft. The contract also included construction and management of two placement areas for the material to be dredeged, as well as the removal and tracking off site — to approved disposal areas — of wood debris found in the dredge cut.
Dredging was completed with two portable cutter suction dredges with five ooster stations:
- Electric 22-inch hydraulic dredge LP pumped dredge material an average of +34,000 lf with the assistance of three boosters.
- Diesle 18-inch hydraulic dredge General Pershing pumped dredged material an average of 20,000 lf with the assistance of two boosters.
Over 200 truckloads of equipment and supplies were brought on site to mobilize the dredges, support boats, discharge pipeline, and portable barges. Each truckload was sequenced to ensure proper delivery and installation of marine equipment provided for an early start of dredging.
Shallow water conditions and extreme flows after rain events made it difficult to maneuver floating equipment needed to place over 50,000 lf of dredge discharge pipeline.
Wood debris was collected daily at each dredge location using crane-mounted excavators on sectional barges. The material was then transported upriver for offloading and cutting, and then trucked oof site for disposal.
100% IIF (Incident & Injury Free)
