Wading & Hydrographic Bathymetric Surveys, and LiDAR Surveys
Our projects are organized by category to allow easier access
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- Hydrologic & Hydraulic Feasibility Study, Phase II, Bel Marin Keys, CA
- Mandalay Canal Maintenance Dredging, Oxnard, CA
- Pre-Dredge Survey Under Drydock Arco at the U.S. Navy Submarine Base, San Diego, CA
- Eel River Bathymetric Survey, Humboldt County, CA
- Hamilton Wetlands Restoration Project, Novato, CA
- Comprehensive Coastal Sand Management Plan, Santa Barbara/Ventura County Coastline, CA
- Ocean Beach Renourishment, San Francisco, CA
- San Diego Regional Beach Sand Project, San Diego County, CA
- Upper Newport Bay Sediment Control Dredging, Newport Beach, CA
- Naval Air Station, North Island, Coronado, CA and Naval Station, San Diego, CA
- Sunset Harbor/Huntington Harbour, Huntington Beach, CA
- Maintenance Dredging of Semeniuk Slough, Newport Beach, CA
- San Joaquin Marsh Enhancement, Phases I and II, Irvine, CA
- Yosemite Canal Wetlands Restoration, San Francisco, CA
Bel Marin Keys, CA
NCI is currently under contract with the Corps of Engineers (San Francisco District) to perform on-call design services for navigation and water resources projects. The Phase II study for the Bel Marin Keys V Wetland Restoration project is part of the overall Hamilton Wetlands Restoration and the work order is to perform an assessment of hydraulics, hydrodynamics, and sediment movement in Novato Creek located in San Francisco Bay. The tasks include bathymetric survey in Novato Creek, deployment and retrieval of tide gages and current meters, and hydraulic & hydrodynamic numerical simulations. The hydraulic simulations are to assess the potential impacts to water levels at various reaches of the creek under 19 different scenarios of flood and project improvement conditions. The tidal-induced estuarine hydrodynamic modeling is to characterize water level and currents throughout the Lower Novato Creek so as to address any potential shoaling and scouring impacts resulting from the proposed Bel Marin Keys V wetland restoration.
This project involved the planning, design and permitting for the maintenance dredging of a power plant cooling water canal. Work involved hydrographic surveying, channel design, chemical analysis of sediments, preparation of permits and regulatory documents, evaluation of alternative upland dredged disposal sites, and preparation of plans and specifications for construction bidding. Noble Consultants, Inc. completed a pre- and post- dredge survey of the 11,000-foot long cooling water intake canal for the Mandalay Generating Station. The survey consisted of transverse sections across the canal at approximately 40-foot intervals along the entire length of the canal. The sections were acquired using our Trainable Acoustic Beam Sea Floor Profiler mounted on one of our survey vessels. On several occasions NCI surveyors assisted the dredge contractor in determining placement of his equipment along the winding canal. NCI surveyors conducted several interim surveys during dredging to determine compliance with the dredge plan. The data were processed and mapped using MicroStation software. Dredgeable material quantities were calculated, and electronic files of the maps were provided to the client.
San Diego, CA
NCI conducted a pre-dredge hydrographic survey under the Floating Drydock Arco, while the drydock was in place in light ballast. The survey was conducted using a Reson 9001 Multi-beam Hydrographic Surveying System mounted on NCI’s survey vessel Western Warrior. The purpose of the survey was to determine the amount of siltation accretion, which had occurred since the area was originally dredged for the placement of Drydock Arco. Used a Reson 9001 Multi-Beam Hydrographic Surveying System mounted on NCI’s survey vessel L’il Warrior to perform a hydrographic survey under the Navy’s Floating Drydock Arco. In addition to the Reson 9001, we also utilized our IT 448 single beam depth sounder. Horizontal Position of the survey vessel, and steering information for the boat operator were provided by NCI’s differential GPS navigation system. The data was processed and presented in maps generated in AutoCAD. Dredgeable material calculations were performed. Electronic files of each map were also provided to the client.
Humboldt County, CA
Noble Consultants was hired as a subcontractor to Towill, Inc. on this project to provide a bathymetric survey of the mouth of the Eel River and the confluence of the Salt River. NCI’s effort was part of an overall topographic mapping along the Eel River for the U.S. Army Corps of Engineers. Single-beam bathymetric soundings were collected and a bathymetric chart was prepared with sounding and contours.