The Topanga Lagoon Restoration Planning Project will advance the long-term planning effort for the restoration of Topanga Lagoon. Steelhead in the Santa Monica Bay are on the brink of extinction and Topanga Creek is the only stream with a reproducing population. However, the conditions in Topanga Lagoon are not optimal to support growth and rearing … Continued
The Trancas Creek Watershed (8.7 square miles) is a small coastal creek draining into the western end of the Santa Monica Bay. Prior to the Woolsey Fire (2018), Trancas Creek had good to excellent spawning and rearing habitat for endangered southern steelhead trout (Oncorhynchus mykiss) and has been identified as a priority for restoration by … Continued
Trancas Lagoon is currently a seven-acre lagoon at the terminus of Trancas Creek in Malibu. In the lagoon, the creek flows through a modified channel, with riprap on the west bank and fill material vegetated with a mixture of wetland, riparian and non-native species. Historic maps and photos of Trancas Lagoon show that the lagoon … Continued
The Santa Ana Watershed Association (SAWA), in partnership with the Orange County Conservation Corps, Riparian Repairs, and Featherly Regional Park plan to complete the removal of Arundo donax from the park. Arundo will be removed by a combination of chainsaw crews and a trackloader with attached cutting blade. Arundo that can’t be cut with the trackloader … Continued
The proposed project will provide 90% design plans for remediation of two key steelhead passage barriers on Santa Margarita River, comprising an abandoned Sandia Creek ford river crossing and a currently active Sandia Creek bridge that cross the Santa Margarita River near the confluence with Sandia Creek. This project provides the biological, hydrologic, geomorphic, and … Continued
The Newland Marsh is a component of the 180-acre Huntington Beach Wetlands, historically part of a large Santa Ana River mouth coastal wetland system extending several miles inland from the ocean. Channelization of the river and construction of Pacific Coast Highway isolated the site from tidal influence in the early 1900’s. The Newland Marsh is … Continued
San Jose Creek is the largest sub-watershed within the Goleta Slough watershed, which is designated a Core 1 watershed for Southern California steelhead restoration in the Southern California Steelhead Recovery Plan (NMFS 2012). The creek has perennial flows and high-quality steelhead habitat in the upper watershed, but access to the upper creek is impeded by … Continued
This project constructed sediment retention basins adjacent to the Goat Canyon drainage to reduce sediment flows to the southern arm of the Tijuana Estuary, and restored riparian habitat in the project vicinity. The Goat Canyon watershed crosses the U.S./Mexico border near the Goat Canyon Quarry site. Approximately 90% of this 4.6 square mile watershed occurs … Continued
This project prepared final design and engineering plans and conducted environmental review for the Goat Canyon Enhancement Project. The Goat Canyon watershed crosses the U.S./Mexico border near the Goat Canyon Quarry site. Approximately 90% of this 4.6 square mile watershed occurs in Mexico where uncontrolled land uses have resulted in severe erosion and associated sedimentation … Continued
This project completed the feasibility and design studies for the second phase of salt marsh restoration at Border Field State Park in the south area of the Tijuana Estuary, involving approximately 480 acres.The Tijuana Estuary Tidal Restoration Program’s (TETRP) is a large multi-phased wetland restoration program involving up to 500 acres of restoration. Its primary … Continued
This project restored approximately 20 acres of intertidal salt marsh by excavating approximately 135,000 cubic yards of sediment. In order to re-create the variety of habitats usually present across the intertidal marsh plain, expand the area for wetland flora and fauna, and create a coastal habitat that can function similarly to a natural system, artificial … Continued
This project developed a watershed-wide invasive plant control plan in the Tijuana River Valley and implemented the first phase of exotics removal. The Tijuana River Valley is in one of the most important biological sites in California. It includes Prime riparian and salt march habitats within a county regional park, a state park, and a … Continued