Arroyo de la Laguna Restoration Projects
The Arroyo de la Laguna is the main tributary to Alameda Creek, the second largest drainage to the San Francisco Bay, with a total watershed encompassing approximately 700 square miles. The watershed is comprised of numerous land use sectors including protected parks, wildlife and water supply areas, rangeland, and urban and suburban development. Rapid development and other historic changes in the upper watershed have caused severe instability in the lower 5 miles of the Arroyo de la Laguna. This has resulted in stream incision, streambank erosion and channel widening of the Arroyo and increased sedimentation of Alameda Creek. This rapid erosion has adversely affected on-site wildlife habitat and continues to degrade upstream and downstream habitat particularly salmonid habitat in lower Alameda Creek. High sediment loads and the lack of vegetation present on the stream banks have severely modified the hydrologic function of this stream and have created adverse conditions for wildlife species that occur in the watershed. The Arroyo is important habitat for the Western pond turtle, a CA species of special concern.
Our work in this stream began at Sunol Glen Elementary School during the El Nino flooding in 1998, where the NRCS assisted with emergency erosion control through its Emergency Watershed Protection program. Since then, the Partnership has joined other stakeholders to increase our understanding of the stream and to develop methods to protect both property and habitat. Several recent projects provide a demonstration of potential restoration and protective practices that can be utilized over similar stretches of the Arroyo.
Details on several of the projects can be found by following the links below:
View photos from the projects in our photo gallery.