Projects
TerraSond Limited has been performing projects across the U.S. and Internationally since 1994.
Using the simple filters on this page, you can view projects sorted by type of Capability, type of Technology, Market Sector, or Geographical Region. These are only selected projects, so if you do not see a project that matches your needs, please contact us, we have more to share.
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Benthic Habitat Mapping
TerraSond collected multibeam bathymetry and backscatter information to support the development of a habitat based method of estimating the number of rockfish and other ground fish near Nuka Bay and the Pye Islands in Alaska.
Bethel Bank Stabilization
TerraSond provided surveying and Global Positioning System (GPS) control surveys for the Bethel Bank Stabilization project; a project that has involved city, state and federal agencies for the past twenty years.
Channel Clearance Surveys - Louisiana
We conducted two channel clearance surveys in the Port of Iberia Channel. The first was a comprehensive bottom and debris survey using sidescan and multibeam sonars for the egress route for an oil platform module along an 8-mile stretch of the Iberia Navigation Canal. Additional geophysical surveys were done for clearance at two docks along the route at the Port of Iberia.
Channel Clearance Surveys - Texas
For this project, we were tasked by the U.S. Army Corps of Engineers- Galveston District, to conduct multiple high resolution repeat surveys for the Jewell-Fulton Channel, LaQuinta Channel, Corpus Christi Channel, and Aransas Pass Entrance Channel, using multibeam and sidescan sonar for data collection.
Coal Facility Landing Site
Our hydrographic surveyors provided multibeam bathymetry and collected marine geophysical and current data to aid in the development of a trestle and dock for the shipment of coal mined from a coal facility landing site in Cook Inlet, Alaska.
Conceptual Engineering Services
We participated in a road design and construction plan for a bridge across Knik Arm, a branch of Cook Inlet near Anchorage, Alaska. Our office staff collected background information about land and sub-sea contours, inlet currents and ice, area biology and regulatory requirements to provide to our client.
Dredging Surveys and Volume Computations
We were contracted by a dredging firm to conduct independent bathymetric surveys and compute dredge quantities for the U.S. Army Corps of Engineers (USACE) - Alaska District's Port of Anchorage project. The annual dredging cost for the Port of Anchorage is approximately $10 million.
Electronic Navigational Charts
A Geographical Information System (GIS) company contracted us to apply updated information to the National Oceanic and Atmospheric Administration's (NOAA's) Alaska Electronic Navigational Charts (ENCs).
Harbor Mountain Road Design
We were contracted by the U.S. Department of Agriculture U.S. Forest Service, Alaska Region to perform a preliminary line survey and hydro-site surveys in preparation for the engineering upgrade design of an existing 4.8 mile (7.6 kilometer) mountain road used as the primary access to public recreational facilities.
Homer Spit Beach Condition Surveys
Tasked by the U.S. Army Corps of Engineers (USACE) - Alaska District, TerraSond conducted beach condition surveys on the Homer Spit in Alaska. Ground topographic surveys were performed using Real-Time Kinematic (RTK) Global Positioning System (GPS) control methods.
Hydroelectric Turbine Sites for Alternative Energy Project
Our staff conducted a geophysical reconnaissance of the Yukon River in Alaska to identify a safe and potentially productive installation site for an in-stream hydrokinetic turbine. This information enabled the client to better understand the resource available to the community for power production and to establish a cost and engineering strategy for future build out.
Kenai Peninsula Flood Plain Mapping
We were tasked by the U.S. Army Corps of Engineer Alaska District to survey the flood plain for three rivers on the Kenai Peninsula. Various surveys were conducted using aerial Light Detection and Ranging (LiDAR) sensors, single beam sonar systems and Real-Time Kinematic (RTK) Global Positioning System (GPS) topographic survey equipment.
Kivalina Village Relocation
We were contracted by the U.S. Army Corps of Engineers (USACE) - Alaska District to provide surveying services for the relocation of the village of Kivalina, Alaska. Services included aerial photography, topographic and hydrographic surveys, and support for field measurements of the existing town-site. The resulting services produced a storm surge analysis for possible relocation of the village.
Lake Travis Multibeam and Sidescan
An engineering firm contracted us to conduct RTK multibeam bathymetric and side scan sonar surveys of three locations within Lake Travis, Texas. Lake Travis is the main reservoir feeding the Austin, TX area and is located in the Hill Country of Texas at an elevation of roughly 700 ft. NAVD 88. The purpose of the survey was to locate the 655 ft. contour on the lakebed for designing a new water intake valve to feed nearby towns, like Volente, Texas.
Levee Integrity Surveys
An engineering firm contracted us to perform hydrographic surveys in Stockton and Lodi, California following the failure of a neighboring levee. This project involved collecting high resolution multibeam and sidescan sonar, at close range, in shallow water.
Mine Debris Consolidation and Disposal
Our surveyors conducted field surveys for the Bureau of Land Management (BLM) Red Devil Mine Debris Consolidation and Disposal project, then measured and established limits for the excavation of two monofill sites.
Navigation Channel Dredging - Knik Arm Shoal
We provided USACE Class I dredge payment surveys that included a pre-dredge survey, 13 project condition surveys, and a post-dredge survey for the construction of a navigation channel along the southern flank of Knik Arm Shoal.
NOAA - Alaska IDIQ Contract for Hydrographic Surveys and Related Services
Since 1998, we have supplied the U.S. Department of Commerce, National Oceanic and Atmospheric Administration (NOAA) with hydrographic data of 100% bottom coverage with shallow-water multibeam sonar systems.
NOAA - Nationwide IDIQ Contract for Hydrographic Surveys and Related Services
We understand NOAA's requirements and have the trained staff and equipment to perform their vital surveys. This 5-year term contract supports NOAA's nautical charting mission in Alaska, the Gulf of Mexico, and all other navigable waters of the U.S., including the East Coast, Pacific, Great Lakes, and U.S. territories.
NOAA Charting - Alabama, Louisiana and Mississippi
We were contracted by the U.S. Department of Commerce, National Oceanic and Atmospheric Administration (NOAA) to provide sidescan, single beam, and multibeam sonar services for Debris Mapping of the Alabama Fairways and Perdido Bay in the Gulf of Mexico.
NOAA Charting - Kasaan Bay
NOAA contracted us to provide hydrographic surveying and support services in Kasaan Bay, Alaska. This survey was comprised of two Task Orders for multibeam surveying, shoreline verification, shoreline buffer, and Automated Wreck and Obstruction Information System (AWOIS) investigations on 13 sites.
NOAA Charting - Mississippi and Alabama
The U.S. Department of Commerce, National Oceanic and Atmospheric Administration (NOAA) tasked TerraSond to provide multibeam sonar and sidescan sonar survey services so that nautical charts of the survey area in Mississippi and Alabama could be updated.
NOAA Charting - Port Clarence and Nome
NOAA tasked us with providing hydrographic surveying and support services for the Approaches to Nome and Port Clarence in the Norton Sound along the Bering Sea, Alaska.
NOAA Charting - Tongass Narrows
We surveyed 1,666 lineal miles of sea floor with multibeam sonars and verified 92 miles of shoreline using National Geodetic Survey (NGS) Remote Sensor Data (RSD). As a result of the hydrographic surveys, 50 separate items were investigated and mapped.
NOAA Charting - Unimak Pass
TerraSond was contracted by NOAA to provide modern hydrographic survey data for updating the nautical charts north of Akun Island, Alaska, and also a portion of the Safety Fairway through Unimak Pass connecting the Bering Sea with the North Pacific Ocean.
NOAA Charting - Upper Cook Inlet
NOAA contracted us to supply hydrographic surveying data for 54.3 square miles of Cook Inlet, Alaska. Afterward, 3,898 lineal miles of multibeam surveys, and 55 lineal miles of side scan sonar surveys were added to the contract.
Nome Navigation Improvements
We were contracted by a large construction company to establish a control network and to provide progress checks for hydrographic and topographic surveys for the U.S. Army Corps of Engineers (USACE) - Alaska District in Nome, Alaska. Our surveying services were used to support the design project for a new harbor and entrance. Included in the project was also a large breakwater extending offshore.
Northeast Cape - White Alice Communications Systems Site Surveys
Our surveyors conducted a primary project control survey, secondary control layout survey for engineering purposes, and post-demolition locate surveys for the White Alice Communications Systems (WACS) on St. Lawrence Island, Alaska.
Pipeline Construction to Osprey Platform
We provided support services for a pipeline installation program in a very rough area of Cook Inlet that was exposed to weather from the north and south.
Post Hurricane Ike Emergency Call-out Clearance Surveys
Working closely with the U.S. Army Corps of Engineers (USACE) - Galveston District, along with NOAA's National Weather Service and other agencies, we developed a plan of action before Hurricane Ike hit the Texas coastline.
Post Hurricane Rita Emergency Call-out Clearance Surveys
Our surveyors were tasked by the U.S. Army Corps of Engineers (USACE) - Galveston District to form immediate response teams to survey Texas ports the day after Hurricane Rita reached landfall. We acted fast to survey the Houston Ship Channel, and two other ports that were hit hard by the hurricane.
Redondo Outfall Inspection
Our hydrographers provided submarine acoustic positioning to a Remotely Operated Vehicle (ROV) during an as-laid outfall inspection.
ROV Multibeam Surveys
We performed a series of multibeam surveys for a company that was tasked with mapping a number of existing and proposed sub-sea installations and specializes in acoustic positioning in deep water.
Shallow Hazards Geophysical Survey
An exploration, production, and support services company contracted us to collect data to support the future move of an oil rig platform in the Alaska Outer Continental Shelf (OCS) Region.
Submarine Transmission Cable Installation
We provided surveying and positioning services to support a 138-kilovolt (kV) submarine cable installation project. These services included a desk-top study, a pre-lay marine survey, a post-lay survey, Global Positioning System (GPS) control survey, and other support services during construction.
Subsea Fiber Optic Cable System
In 2008, Alaska Communications System (ACS) installed a 2900 km submarine fiber optic cable across the Gulf of Alaska connecting Oregon and Alaska.
Support Surveys for Wildwood Air Force Station Remediation
Our surveyors performed a primary control monumentation survey, preliminary topographic and quantity calculations, construction and grading layouts and final as-built surveys of contaminated sites for the Wildwood Air Force Station Phase II Remediation Project.
Surface and Subsea Positioning for Robson Bight Salvage
TerraSond, Ltd. provided surface and sub-sea positioning during the recovery of a fuel truck and lubrication cube in over 350 meters of water near the Robson Bight Ecological Preserve in British Columbia, Canada.
Surveys in Support of Mine Development
Our surveyors used Static GPS to standardize project control on over 4,500 square miles of remote Alaska to support the development of a mineral mining operation. This project required a variety of surveying capabilities and technologies.
USACE - Alaska IDIQ Contract for Hydrographic Surveys and Related Services
Since 1995, we have provided the U.S. Army Corps of Engineers (USACE) - Alaska District with hydrographic, topographic, and Global Positioning System (GPS) control surveys; aerial photography; LiDAR mapping; and tide studies on over five hundred projects throughout Alaska.
USACE - Texas IDIQ Contract for Hydrographic Surveys and Related Services
Since 2003, TerraSond has provided and continues to provide hydrographic surveys and related support services for the Galveston District of the U.S. Army Corps of Engineers (USACE).
Wells Dam Hydrographic and ROV Video Survey
Douglas County, Public Utility District No. 1 had a debris boom designed and constructed to stop and redirect logs and other debris before reaching the Wells Dam and spillways.
Wrangell Narrows Tide Stations
We were tasked by the USACE - Alaska District to conduct tide surveys for the purpose of refining and adding continuity to the historical Tidal Datums located along the southern end of Wrangell Narrows, Alaska. The four selected tide stations provided vertical control datum for two USACE - Alaska District projects located within the vicinity of Mile 12 to Mile 21.