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Al Preston

Dam Hydrology, Hydraulics and Water Quality

2026-08-17T16:00:24-06:00March 27th, 2026|Tags: , , , , |

Our team leverages its expertise to perform tailored hydrologic and hydraulic studies. Geosyntec develops, calibrates, and uses a variety of hydrologic, hydraulic, hydrodynamic, and other models (1-D, 2-D, 3-D); data analysis; statistical packages; and software tools to conduct analyses related to dam erosion and failure, infrastructure design, flow simulation, sediment transport, temperature and water quality, restoration, and environmental habitat.

Promotion of New Principals and Senior Principals for 2025

2026-03-17T14:04:18-06:00July 23rd, 2025|Tags: , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , |

Geosyntec announces our 2025 class of Principals and Senior Principals. These individuals exemplify the values that define the firm: collaboration, inclusion, innovation, safety, and passion for excellence.

Geosyntec Announces 2025 Innovation Award Winners

2026-09-24T13:48:11-06:00July 3rd, 2025|Tags: , , , , , , , , , , , , , , , , , , , , , , |

Geosyntec’s Innovation Council recently recognized the winners of our second annual Blue Sky Innovation Awards. These projects and teams embody the innovative ideas we bring to life to offer best-value solutions for our clients' most complex projects.

Geosyntec Stormwater Experts Contribute to CASQA 2024

2026-03-17T13:03:56-06:00October 14th, 2024|Tags: , , , , , , , , , |

Geosyntec practitioners will speak, moderate, and lead a training workshop at the Twentieth Annual California Stormwater Quality Conference (CASQA) from October 21 through 23, 2024.

Geosyntec Elects New Principals for 2020

2026-03-15T10:22:01-06:00April 14th, 2020|Tags: , , , , , , , , , , , , , , , , |

Geosyntec is pleased to announce the promotion of Aimee Grossman, Al Preston, Ben Amos, Dan Bourdeau, David Vance, Fabrizio Settepani, Hamid Amini, James Brinkman, Justin Knight, Kaitlyn Rhonehouse, Mylli Fryman, Nick Yafrate, Paula Hutchison, Seth Kellogg, Suzanne O'Hara, Bill Steier, and William Tanner to the position of Principal within the Geosyntec family of companies. These individuals have each made substantial contributions to sustaining and growing our firm, as detailed below. Please join us in congratulating each of them on reaching this significant milestone in their careers.

Al Preston Leading Geosyntec Participation in an Internal Erosion Initiated Breach Model Performance Evaluation Research Project

2026-03-15T10:21:47-06:00November 13th, 2019|Tags: |

Al Preston, Ph.D., PE (California) is leading Geosyntec's participation in an international research project to evaluate models of internal erosion failure of earthen embankment dams.

Geosyntec Staff Featured at the 2018 United States Society on Dams Conference

2026-03-15T10:20:55-06:00April 24th, 2018|Tags: , , , , , , , , , , |

Leading Geosyntec dam practitioners will present at the 2018 United States Society on Dams (USSD) Conference at the Hyatt Regency in Miami, Florida on April 30 – May 4, 2018.

Geosyntec Among World-Class Designers on LA County’s LA River Master Plan Team

2026-03-15T10:20:50-06:00March 6th, 2018|Tags: , , , , , , , , , , , , , , |

Geosyntec was selected by the Los Angeles County Department of Public Works and the Los Angeles County Department of Parks and Recreation as the prime consultant and engineer to update the County's 1996 LA River Master Plan.

Geosyntec to Present at the USSD 2017 Annual Conference and Exhibition

2026-03-15T10:20:14-06:00March 31st, 2017|Tags: , , , , , , , |

Geosyntec staff will make a substantial technical contribution to the United States Society on Dams (USSD) 2017 Annual Conference and Exhibition in Anaheim, California on April 3-7, 2017.

Geosyntec Partners with Frank Gehry and Laurie Olin on L.A. River Visioning Plans

2026-03-15T10:19:52-06:00September 13th, 2016|Tags: , , , , , , , , , , , , , , |

Mark Hanna (California) is working with architect Frank Gehry and landscape architect Laurie Olin on the L.A. River Visioning Plan by providing expertise as a water resource engineer.

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