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Esri Water GIS Heroes

Multiple portraits of Water GIS Heroes with a navy blue map in the background

Esri water GIS heroes inspire

Each month, the Esri water team will highlight a GIS hero from the Esri water community. These heroes are leaders within the GIS community and true GIS champions. As proven problem solvers, they have gained deep respect from colleagues. Their genuine love of GIS inspires others to imagine how GIS can help them achieve their own ambitious goals. Join us in celebrating these industry leaders who are making a difference every day.

Mark Rees | City of Wentzville

GIS analyst Mark Rees leads a team that provides mapping support to the City of Wentzville’s Water Division. 

During his tenure at the city, Mark has used ArcGIS Enterprise to migrate data collection from a paper-based to an electronic format. Implementing ArcGIS Field Maps allowed for the seamless integration of GIS technology to increase operational efficiency across all programs that the Water Department manages. Mark has also used Python to automate various processes and provide up-to-the-minute information about program status and data collection efforts.

Mark Rees smiling and wearing a black collared shirt overlaid on a blue and purple bakground

Past GIS heroes

  • Thomas Matich wearing business attire and smiling overlaid on a blue and purple background
    GIS Hero Winter 2023

    Thomas Matich | Delaware Rural Water Association

    Training Specialist

    Thomas advised organizations on how to integrate GIS into their operational processes to comply with the Safe Drinking Water Act.
  • John Nolte smiling and wearing a suit and tie overlaid on a blue and purple graphic background
    GIS hero Fall 2023

    John Nolte | Denver Water

    GIS Manager

    John oversaw an effort to inventory service lines throughout Denver Water’s service area, which streamlined the utility’s Lead Reduction Program.
  • Sean Quarnstrom smiling and wearing a jacket overlaid on a blue and purple graphic background
    GIS hero Fall 2023

    Sean Quarnstrom | HMRD

    Senior Engineer

    Under Sean’s guidance, Henry Miller Reclamation District (HMRD) developed and implemented a variety of GIS workflows that saved valuable time.
  • Josh Rhamy smiling and wearing a suit and tie overlaid on a blue and purple graphic background
    GIS HERO SPRING 2023

    Josh Rhamy | American States Utility Services

    GIS Manager

    Josh is the driving force behind advancing the enterprise geospatial program at American States Utility Services.
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Who's the next Esri water GIS hero?


Tell us about someone you know who uses GIS to create innovative solutions and inspire others.