Dewberry Selected to Provide QA/QC for Connecticut Map Data
[ Back ]   [ More News ]   [ Home ]
Dewberry Selected to Provide QA/QC for Connecticut Map Data

Firm will review new statewide geospatial, orthoimagery, and lidar products

Fairfax, VA, August 31, 2016 -- Dewberry, a privately held professional services firm based in Fairfax, Virginia, has been selected by the Capitol Region Council of Governments to perform comprehensive quality assurance/quality control (QA/QC) services for Connecticut’s recently acquired statewide data collection. The firm will survey 3-D QA/QC checkpoints, test the horizontal and/or vertical accuracy of geospatial products, and perform qualitative assessments of orthoimagery and lidar.

The Sanborn Map Company recently completed the orthoimaging project, which provides Connecticut with high-resolution imagery of the entire state and coastline. Sanborn collected more than 42,500 4-band, 3-inch resolution images; more than 6,000 coastline images during low tide; and more than 5,200 square miles of high-density lidar data.

Dewberry has developed a quality plan with detailed acceptance criteria for the orthoimagery and lidar. Sanborn’s mapping products, to be delivered later this year, will include 3-inch ground sample distance (GSD) orthoimagery, U.S. Geological Survey QL2 lidar data, bare Earth digital elevation models, and 1-foot contour maps. When reviewed and complete, the products will be available to the public through Connecticut’s Open Data Initiative.

About Dewberry

Dewberry is a leading, market-facing firm with a proven history of providing professional services to a wide variety of public- and private-sector clients. Recognized for combining unsurpassed commitment to client service with deep subject matter expertise, Dewberry is dedicated to solving clients’ most complex challenges and transforming their communities. Established in 1956, Dewberry is headquartered in Fairfax, Virginia, with more than 50 locations and 2,000+ professionals nationwide. To learn more, visit

Read the complete story ...