Lunch and Learn Science: Creek and Marsh Connections

Learn how creek flows and sediments can benefit restoring tidal marshes from Michael MacWilliams of FlowWest, who has modeled hydrodynamics where the Calabazas and San Tomas Aquino creeks adjoin the salt ponds in northern San Jose. His work informs Valley Water’s project to connect those creeks with an Alviso pond in the Restoration Project. That project, the Calabazas/San Tomas Aquino Creek-Marsh Connection Project, would be the first in the South Bay to connect creeks with marsh, with a primary aim of increasing natural sediment supply to deeply subsided salt ponds to help restore tidal marsh while reducing flood risk. This Oct. 14th, 2025, presentation, "Building ecosystem resilience through reconnecting sediment supply from creeks to tidal wetlands," introduces the project involving aPond A4 in the Alviso complex of the U.S. Fish and Wildlife Service's Don Edwards San Francisco Bay National Wildlife Refuge and some of the modeling tools supporting it.

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