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James W. Sewall


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Products & Services

Sewall provides integrated services in engineering, geospatial, natural resources, and business management consulting to government and industry. In this section of the web site, we provide information according to service area.


Civil, structural, and traffic engineering; utilities infrastructure mapping and asset management; and surveying

Environmental Sciences

Integrated solutions to managing water resources and water quality

Remote Sensing

Over 60 years’ experience in aerial photography and photogrammetric mapping and a legacy in accurate geospatial data

Geospatial Solutions

Innovative solutions in mapping, GIS, and web services

Forestry & Natural Resource Consulting

Appraisal and inventory; forest management, management planning, and modeling; and natural resources mapping and GIS


Geospatial-derived solutions for managing timberland assets


More Info

Sewall products and services (PDF)

Featured ProjectS

Practical, sustainable solutions for government and industry



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