James W Sewall Company

Bangor, ME, United States


Sewall provides integrated geospatial, engineering, and natural resource consulting services to clients in government and industry. Our diverse portfolio is based on 100 years’ experience in surveying and engineering; 60 years’ in aerial mapping; and 20 years’ in GIS and software application development. In the last 10 years, our offerings have expanded to include web-based GIS, web hosting and other web services. Sewall is organized to share resources and technologies across company areas for the delivery of higher-value customer solutions. Few companies in our markets have both the breadth of services and the structure to combine them in ways that meet specific client needs. Our ability to coordinate and collaborate in the service of these needs is an advantage to us and to our clients, who return to Sewall again and again. Sixty-five percent of Sewall clients are repeat customers. A client-focused firm, Sewall is committed to understanding client needs and business drivers and the needs of client constituencies. Our core services in engineering, geospatial information, and natural resources can be integrated in any combination to further client success.



Engineering: Civil, structural, traffic/transportation; water/wastewater; and surveying Renewable and Traditional Energy: Siting assistance, surveying, civil design, and permitting for wind farm, bioenergy and electric and gas energy development; pipeline integrity management consulting and software Environmental Sciences: Water resource and quality management, municipal utilities, climate change assessment Geospatial Solutions: Needs assessment and strategic planning; GIS mapping and systems implementation; web services; and data analysis for government and industry Forestry and Natural Resources Consulting: Appraisal and inventory, forest economics, natural resource mapping, and forest management GIS

Services Provided:

Application Development, Business Case Development, Data Conversion/Migration, Data Model & Database Design, GIS Strategy and Planning, Hosting Services, Implementation, Needs and Requirements, System Architecture and Design, System Integration, Training Services