HR Green Welcomes Phil Blonn as Senior Water Resources Engineer

November 08, 2021

HR Green is pleased to announce that Phil Blonn, PE, CFM has joined the firm as a Senior Engineer in the Water Resources practice. He is based in the St. Louis office.

Phil Blonn

Phil brings over 20 years of experience in water resources planning and design projects and has worked on large projects across the country and internationally. He will support the St. Louis office and other HR Green geographies to provide additional design leadership.

“I am excited to join HR Green and work with the St. Louis Water team. My experience with hydraulics, hydrology, watershed planning, flood control, and stormwater management will help serve local and state government and private-sector clients. I look forward to working on our core mission – Building Communities and Improving Lives.”

Phil earned his MS in Environmental Engineering at Marquette University and his BS in Civil Engineering from Calvin College. He is a member of the American Society of Civil Engineers and a board member of the Missouri Floodplain and Stormwater Management Association.

About HR Green

Founded in 1913, the HR Green Family of Companies includes HR Green, Inc.; HR Green Pacific, Inc.; HR Green Development, LLC; and HR Green Fiber and Broadband, LLC. HR Green has offices throughout the nation providing engineering, technical, and management solutions that build communities and improve lives in: Transportation, Water, Governmental Services, Land Development, Environmental, Construction, and Fiber and Broadband. For more information, visit

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