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Just south of downtown San Jose, at the intersection of Santa Teresa and Bailey Avenues, lies the Laguna Seca – historically a 1,000+ acre freshwater wetland. Despite being dredged, drained and converted to agriculture, parts of the Laguna Seca still exist today and are critically important for wildlife like migratory birds on the Pacific Flyway.
Knowing what this land used to look like helps give us a sense of what was and, through our work, what could be in the future. Take a look at the map of San Jose’s Coyote Valley and the Laguna Seca below. Hand-drawn in 1847 by Chester Smith Lyman, a land surveyor who documented much of California, this map depicts the dominant features of what was then Rancho de la Laguna Seca and offers a glimpse of how water once flowed over the valley floor.
While not shown on this map, we know from research conducted by our partners at the San Francisco Estuary Institute and the Santa Clara Valley Open Space Authority that most of the water on the western side of Coyote Valley never moved through a defined channel or creek. Instead, the water slowed and fanned out across the landscape, creating a mosaic of wet meadows and ponds, providing habitat for a variety of wildlife and percolating into a groundwater basin that now supplies San Jose with drinking water.
But things have changed in Coyote Valley since Lyman drew his map. Just over 100 years ago, in early 1916, the Laguna Seca Reclamation District was formed to “reclaim” about 1,200 acres of wetlands and wet meadows, which were drained and subsequently burned to make room for a new booming industry in the Valley – agriculture.
To accomplish this, farmers installed a four-mile-long drainage canal that we now call Fisher Creek. The water that once created habitat and recharged the aquifer in Coyote Valley was instead directed out of the Valley and fed into Coyote Creek – exacerbating the flood risk for downstream locations in San Jose.
Peninsula Open Space Trust (POST) protects and cares for open space, farms and parkland in and around Silicon Valley. Since its founding in 1977, POST has been responsible for saving more than 75,000 acres as permanently protected land in San Mateo, Santa Clara and Santa Cruz counties.