John M. Hewitt, P.E., C.F.M.


John Hewitt is a graduate of the University of Texas in Austin and has served as President of Hewitt Engineering Inc. in Kerrville, Texas, since 2008. He previously served as Manager of the Infrastructure Team for a consulting firm in San Antonio and Houston. He has more than 37 years of experience primarily in municipal water, stormwater management, wastewater engineering and site development for public and private commercial projects.

Mr. Hewitt’s project experience includes water and wastewater system planning and the design of sanitary sewer lines and large diameter transmission water mains, water supply wells, domestic and high-pressure fire protection waterlines, and ground and elevated storage tanks. He was involved in the City of Houston’s Surface Water Transmission Program including design, management, and construction phase services for numerous large diameter waterline projects.

Mr. Hewitt has designed waterline projects ranging from 8 to 84 inches in diameter for cities throughout Texas. He has provided project management and design of sanitary sewer rehabilitation, gravity sewer lines, force mains and lift stations.

Mr. Hewitt has performed numerous hydrologic and hydraulic analyses using HEC-HMS/HEC-1, HEC-RAS/HEC-2, and WinStorm. His project experience includes flood insurance studies, master drainage plans, bridge scour analyses, outfall studies, backwater analyses, storm sewer analyses and design, and detention storage design.

He has prepared drainage studies and improvement plans for small and large municipalities, drainage facilities for several major highway construction projects, flood studies for the US Army Corps of Engineers and served as project manager for a 138 square mile watershed master plan incorporating GIS based tools into the planning process.


Master of Science, Civil Engineering—University of Texas at Austin, 1987

Bachelor of Science, Civil Engineering—University of Texas at Austin, 1981


Professional Engineer, Texas # 66142

Certified Floodplain Manager, Texas #0755-05N