Once floated, the pipe is then dragged off the beach and towed. This operation requires several steps replacing the water/sand mixture in the pipe with only water, then capping off both ends of the pipe, then connecting a hose from a compressor (located on the beach) which then blows the water out of the pipe thereby raising / floating the pipe. Dredging on the western disposal location was completed on Wednesday and 5,500′ of pipe needed to be moved. Dredging started on Tuesday and continued on Wednesday. As dredging was planned to start at the southern end of the channel, the weather conditions (southerly winds & seas) on Monday were not suitable for dredging. Similar to Allen Harbor, this project will also have multiple locations for the disposal of the dredged sand (both private and public beaches). The Pre-Dredge survey plan – the northern/inner harbor end of the channel The Pre-Dredge survey plan – the southern end of the channel Most of the dredging is focused on the gray areas. The Blue soundings are areas that do not need to be dredged as they are equal or deeper than the -9 foot depth at Mean Low Water (MLW). Its important to point out that the Pre-Dredge survey covers the entire length and width of the channel and some areas are heavily filled in (the dark gray areas as seen in the below plans) while other areas are lightly filled in (the green soundings). The Pre-Dredge survey completed showed just over 12,000 Cubic Yards that needed to be removed to maintain a controlling depth of -9 feet at Mean Low Water (MLW) throughout the channel. This harbor is a very important recreational and commercial port for Harwich, as well as for all of Cape Cod as thousands of boats use this harbor each season and keeping the channel clear of shoaling is critical. This is also our last project of the season. With the Allen Harbor project completed, the second and last project for Harwich is Saquatucket Harbor. Published on: JSand Shifter – Saquatucket Harbor Channel, Harwich
0 kommentar(er)
