VGW Geospatial provided shoreline mapping services for the Coastal Mapping Program, collecting digital shoreline data in support of NOAA’s nautical charting program. Wilson & Company managed and executed all aspects of the project including aerial photography, GPS surveying, photogrammetric mapping, feature attribution, metadata, and GIS services. Color and tide-coordinated black and white, infrared aerial photography was acquired and GPS control surveys were conducted over the project area. Photogrammetric services include performing analytical aero triangulation and extracting the shoreline at both the MHW and MLLW tidal stages. In addition to the digital shoreline files, aids to navigation and landmarks features were collected. All features were attributed to the RSD Coastal Cartographic Feature Attribution Table (CCFAT).
The City of O’Fallon, Illinois hired VGW Geospatial to provide a highly accurate LiDAR solution for line-of-sight analysis and drainage calculations for approximately 45 square miles of the city limits. VGW Geospatial produced digital surface models and digital terrain models from a low-altitude LiDAR acquisition platform with a vertical RMSE of 0.2-feet.
This LiDAR project has continued to provide the City of O’Fallon with valuable information for many of their Public Works Projects. This dataset has been used to determine obstacle encroachment into the Emergency Services Air Fiber Optics line-of-sight communication system, modeling runoff for the city’s stormwater system, collecting curb lines for each of the city’s streets, and determining line-of-sight restrictions for street signage.
VGW Geospatial has provided the U.S. Army Corps of Engineers, Albuquerque District with surveying and photogrammetric services on two consecutive IDIQ contracts. Services have included photogrammetric mapping requiring acquisition of film and/or digital aerial photography, aerial triangulation, stereo mapping compilation, orthophotography, land use/land cover interpretation, creation of horizontal and vertical control networks, ground control for support of photogrammetric and LiDAR mapping, topographic mapping using total stations or GPS; detailed planimetric surveys; profile and cross section surveys, instrumentation surveys, cadastral surveys, site and utility surveys, and geographic information system (GIS) services.
Project accomplishments include:
· Cochiti Reservoir Historical Baseline Mapping – an award winning study to determine sediment deposition and distribution trends in the reservoir and upstream in the Rio Grande
· Comprehensive Evaluation of Project Datums Compliance Surveys – performing geodetic control and compliance surveys for 70 projects within New Mexico, Colorado, and Texas to establish a consistent basis of elevation at each USACE flood control project
· Las Conchas Post Fire LiDAR – providing data from the canyons to produce two-foot contour equivalent digital elevation data for geometry input to USACE hydraulic model programs for geomorphic and vegetation studies
· Holloman Airforce Base Taxiway Extension and Aircraft Parking Survey and Mapping – performing topographic and planimetric mapping including utility data, digital terrain models for engineering design for demolition plans, site plans, roadway plan and profiles, grading and drainage plans, and utility plans and profiles for construction