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James W. Sewall


Sewall advocates for water protection, forms water team. LaMarr Clannon educates Maine communities and institutions on benefits of using low impact development

LaMarr Clannon, Stormwater Engineer at James W. Sewall Company, is educating communities and institutions throughout Maine on the benefits of using low impact development (LID) techniques to protect clean drinking water, reduce stormwater impacts, and increase community resiliency to changing weather patterns. She joins a newly formed Water Team at Sewall that offers clients complete, integrated services and solutions that bridge the gap from project design to the maintenance and inspection of system assets.

In partnership with NOAA and the Maine Coastal Program, Ms. Clannon discussed LID for community climate change resiliency at workshops held in Ellsworth and Wells; partnered with the Maine Drinking Water Program and EPA Region 1 on workshops to protect drinking water in Bangor, Lewiston and Presque Isle; presented to the planning board and downtown revitalization committee in Damariscotta on LID for redesigning the riverfront; and, in partnership with the Saco River Corridor Commission and partially funded by the Maine Outdoor Heritage Fund, presented on LID and local stormwater utilities in 16 towns along the Saco River to protect the River’s drinking water and recreational resources.

Ms. Clannon joins Sewall staff in forming the new Water Team, which combines three areas of expertise, including water/wastewater engineering, stormwater engineering and GIS/asset management capabilities. The team consists of Ms. Clannon, Mike Riley, PE, and Rick Martens, GISP. Ms. Clannon guides clients on MS4 permitting, low impact design, and stormwater utilities development. Mr. Riley specializes in water system design, utility master plans, and new source development. Mr. Martens consults and designs GIS and asset management systems to support both water and wastewater infrastructure, typically as part of a water engineering or stormwater project. The Water Team provides world-class, integrated services for water system/plant design, construction administration, and maintenance evaluation using the latest in technology and workflows.

The Sewall Water Team will exhibit at the 2014 Maine Rural Water Association (MRWA) conference at the Cross Insurance Center in Bangor, Maine, on December 9-11. For more information about the team and its services, call 207-817-5535 or e-mail

About Sewall: Founded in 1880, Sewall is an international professional consulting organization specializing in infrastructure, energy and natural resources. The company’s diverse portfolio is based on 134 years' experience in civil engineering, surveying and forest appraisal; 65 years' in remote sensing; and 30 years' in GIS and application development. For information, please visit or contact Rick Martens at 207-817-5535; Email:


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