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James W. Sewall


Augusta, Maine Needs assessment Wetlands GIS layer


Sewall assists industry and government clients at federal, state, and local levels in developing GIS from strategic planning and needs assessment to geodatabase design, systems integration, and application development. To reduce the cost of technology entry and maintenance, we offer web hosting services, on-line applications, and a secure geoportal for the collection, distribution, and resale of geospatial data. With our established web site/web mapping hosting facility, clients can access their data with only a web browser and Internet connection. Our staff has expertise in industry-leading technologies including ESRI, Autodesk, Microsoft, Intergraph, Cartegraph, and Hitachi AnyGIS. Sewall is a corporate business partner with ESRI, Autodesk, and Cartegraph.

Assessment, Design & Integration

Sewall is experienced in assessing needs for a full range of GIS implementations, from project- or department-specific to enterprise or broader society GIS. We have assisted clients plan, design and implement systems for discrete research purposes, such as water pollution detection, to statewide GIS, bringing together multiple organizational and community stakeholders in the planning process. We worked with both industry and government clients to integrate data and systems across departments into one web-based enterprise system accessible to all authorized users.

Application Development

Sewall software engineers have developed applications for mobile, desktop, enterprise and web environments, currently used in government operations, utilities pipeline integrity management, and forestland management. We have direct experience providing services and solutions for health and human services, public safety, environmental management, and military intelligence.

We have many years’ experience with Microsoft's COM and .NET frameworks and have written numerous applications in Visual Basic, C++, C#, HTML, and Javascript. We have also been developing software components using ESRI's ArcObjects since ArcGIS version 8x and have adopted ArcGIS Server technology for web-based services and solutions.

Web-based GIS

  • CityMap™
    An interactive GIS map viewer for accessing and managing geospatial information over the web.
  • GeoPower™
    An online communications portal that extends the power of GIS across the organization and into the public sector

Sewall Helpdesk

We provide users of our software and systems with fast, reliable technical support through Sewall Helpdesk. Users can access the support center through a toll-free number during East Coast business hours and round the clock via e-mail.

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More Info

Enterprise GIS Systems (PDF)

Related products

CityMap™: Sewall's interactive GIS map viewer (PDF)

Sewall GeoPower™: Portal technology for shared services

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Gary Mullaney
Senior Consultant
843 606 1022


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