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Topanga Lagoon Restoration Project Library

Learn more about the research and development of the Topanga Lagoon Restoration project at the following resources below:
Partner/Landowner Websites
Presentations
Media Coverage
Research and Publications

Partner/Landowner Websites

Learn more about project partners and landowners via the buttons below.

Presentations

  • 2023 Public Information Meeting (6/17/23)
  • 2022 Environmental Impact Report Scoping Meeting (6/11/22)
  • 2021 Public Workshop (2/27/21):
  • 2020 Public Workshop (2/29/20):

    Media Coverage

    A sampling of recent media coverage is below. Online searches will provide over 20 years of project coverage!

    Research & Publications

    Recent research associated with the Topanga Lagoon restoration project and onsite resources are listed below by category with the most recent publications listed first.

    Categories include:

    Project Specific Environmental Documents

    Topanga Ranch Motel Condition Assessment and Conceptual Design for Rehabilitation

    Wiss, Janney, Elstner Associates, Inc. 2019 Topanga Ranch Motel Condition Assessment and Conceptual Design for Rehabilitation. Prepared for James Newland, CDPR.

    Topanga Creek Restoration: Rodeo Berm Removal

    Dagit, R. 2009. Topanga Creek Restoration: Rodeo Berm Removal. Urban Coast Vol 1 (1):37-41 November 2009.

    Rodeo Grounds Berm Removal and Restoration Project Mitigated Negative Declaration

    Rodeo Grounds Berm Removal and Restoration Project Mitigated Negative Declaration. January 2006. Prepared for CA Department of Parks and Recreation by Envicom, Corp and RCD of the Santa Monica Mountains.

    Hydrogeologic Study, Lower Topanga Creek Watershed, Los Angeles County, California

    GeoPentech, 2006. Hydrogeologic Study, Lower Topanga Creek Watershed, Los Angeles County, California. Prepared for the RCD of the Santa Monica Mountains. Funded by a grant from the California Coastal Conservancy.

    Topanga Creek Watershed Water Quality Study Final Report

    Dagit, R., S. Williams and J. Fuhrman. 2004. Topanga Creek Watershed Water Quality Study Final Report. Resource Conservation District of the Santa Monica Mountains, December, 2004.

    Project Study Report: Topanga Lagoon Bridge Replacement and Lagoon Restoration

    Caltrans 2004. Project Study Report (Project Development Support) TOPANGA LAGOON BRIDGE REPLACEMENT AND LAGOON RESTORATIONPart 1. Part 2. Prepared by Moffatt and Nichols Engineers for the RCD of the Santa Monica Mountains. Funded by a grant from the California Coastal Conservancy.

    Project Study Report: Topanga Canyon Blvd Narrows Roadway and Tunnel

    Caltrans 2004. Project Study Report (Project Development Support) TOPANGA CANYON BLVD NARROWS ROADWAY AND TUNNEL. Prepared by Moffatt and Nichols Engineers for the RCD of the Santa Monica Mountains. Funded by a grant from the California Coastal Conservancy.

    Initial Site Assessment Report Topanga Lagoon Restoration, Topanga, California

    GeoPentech, 2003. Initial Site Assessment Report Topanga Lagoon Restoration, Topanga, California. Prepared for Moffat & Nichol Engineers.

    Technical Memorandum: Topanga Lagoon Restoration Project Preliminary Soils Investigation

    Moffatt and Nichols Engineers. 2003. Technical Memorandum: Topanga Lagoon Restoration Project Preliminary Soils Investigation, Los Angeles County, California.

    Topanga Creek Watershed Management Plan

    Dagit, R. editor. 2002. Topanga Creek Watershed Management Plan. Topanga Creek Watershed Committee,Topanga, CA.

    Topanga Creek Watershed and Lagoon Restoration Feasibility Study

    Dagit, R. and C. Webb. 2002. Topanga Creek Watershed and Lagoon Restoration Feasibility Study. Resource Conservation District of the Santa Monica Mountains, Topanga, CA.

    Steelhead Trout

    Occurrences of Steelhead Trout (Oncorhynchus mykiss) in Southern California, 1994-2018

    Occurrences of Steelhead Trout (Oncorhynchus mykiss) in Southern California, 1994-2018: published in the California Fish and Wildlife Journal, vol. 106(1) (https://wildlife.ca.gov/Publications/Journal/Contents), pdf version here.

    Temporal and Volumetric Characteristics of Lagoons in the Santa Monica Bay and the Passage Implications for Southern California Steelhead Trout

    Alvarez, Danielle and Dagit, Rosi 4886381 (2019) “Temporal and Volumetric Characteristics of Lagoons in the Santa Monica Bay and the Passage Implications for Southern California Steelhead Trout,” Bulletin of the Southern California Academy of Sciences: Vol. 118: Iss. 3.

    Steelhead Abundance Monitoring in the Santa Monica Bay, January 2017 – November 2019

    Dagit, R., D. Alvarez, A. Della Bella, S. Contreras, B. Demirci, A. Kahler, E. Montgomery, H. Nuetzel and J. C. Garza. 2019. Steelhead Abundance Monitoring in the Santa Monica Bay, January 2017 – November 2019. Prepared for California Department of Fish and Wildlife Contract No. 1650904. Prepared by the Resource Conservation District of the Santa Monica Mountains, Topanga, CA.

    Temporal and Volumetric Characteristics of Lagoons in the Santa Monica Bay and the Passage Implications for Southern Steelhead Trout

    Alvarez, D. and R. Dagit. 2019. Temporal and Volumetric Characteristics of Lagoons in the Santa Monica Bay and the Passage Implications for Southern Steelhead Trout. Bulletin of the Southern California Academy of Sciences 118(3):1-27.

    Santa Monica Bay Anadromous Adult and Juvenile Steelhead Monitoring, 2013-2018

    Santa Monica Bay Anadromous Adult and Juvenile Steelhead Monitoring, 2013-2018: a report prepared for the California Department of Fish and Wildlife contracts Nos. P1250013 and P1450013.  The report is in four sections: Introduction and Appendices 4 & 5Task 1Task 2Task 3

    Comprehensive Lifecycle Monitoring of Oncorhynchus mykiss in Topanga Creek, California: Final Report 2008-2018

    Comprehensive Lifecycle Monitoring of Oncorhynchus mykiss in Topanga Creek, California: Final Report 2008-2018: a report prepared for the California Department of Fish and Wildlife contract No. P1550012.  P1550012 Lifecycle Final Report

    The Effects of a Prolonged Drought on Southern Steelhead Trout

    Dagit, Rosi; Bell, Ethan; Adamek, Krista; Mongolo, Jennifer; Montgomery, Elizabeth; Trusso, Nina; and Baker, Peter (2017) “The Effects of Prolonged Drought on Southern Steelhead Trout (Oncorhynchus mykiss) in a coastal creek, Los Angeles County, California,” Bulletin of the Southern California Academy of Sciences: Vol. 116: Iss. 3.

    Santa Monica Bay Anadromous Adult and Juvenile Steelhead Monitoring 2013-2015

    Dagit, R., K. Adamek, D. Hofflander, J. Mongolo and E. Montgomery. 2015. Santa Monica Bay Anadromous Adult and Juvenile Steelhead Monitoring 2013-2015. Prepared for CDFW contract No P1250013. Resource Conservation District of the Santa Monica Mountains, Topanga, CA.

    Topanga Creek Steelhead Monitoring March 2011-December 2015

    Dagit, R. K. Adamek, S. Albers, E. Montgomery, and A. Sanchez. 2015. Topanga Creek Steelhead Monitoring March 2011-December 2015. Prepared for California Department of Fish and Wildlife, Contract P105009. Resource Conservation District of the Santa Monica Mountains, Topanga, CA. 

    Topanga Creek Steelhead Monitoring March 2011-December 2015

    Dagit, R. K. Adamek, S. Albers, E. Montgomery, and A. Sanchez. 2015. Topanga Creek Steelhead Monitoring March 2011-December 2015. Prepared for California Department of Fish and Wildlife, Contract P105009. Resource Conservation District of the Santa Monica Mountains, Topanga, CA.

    Lifecycle Monitoring of Oncorhynchus mykiss in Topanga Creek

    Krug, J., R. Dagit, Stillwater Sciences, J. C. Garza. 2014. Lifecycle Monitoring of Oncorhynchus mykiss in Topanga Creek, California. Final Report. Prepared for CA Department of Fish and Wildlife, Contract No. PO950013. January 2014.

    Juvenile Growth of a Population of Southern California Steelhead Trout

     Bell E., S. M. Albers, J. M. Krug, and R. Dagit. 2011. Juvenile Growth of a Population of Southern California Steelhead Trout (Oncorhychus mykiss). California Fish and Game Bulletin 97(1):25-35.

    Environmental Factors Controlling a Persistent Population of Southern California Steelhead

    Bell, Dagit and Lignon. 2011. Environmental Factors Controlling a Persistent Population of Southern California Steelhead (Oncorhychus mykiss). Bulletin of the Southern California Academy of Sciences No 110 (1):1-16.

    Summary Report Santa Monica Bay Steelhead Monitoring 2009-2011

    Dagit, R and J. Krug. 2011. Summary Report Santa Monica Bay Steelhead Monitoring 2009-2011. Final Report to CDFG Contract No. P0850021. Resource Conservation District of the Santa Monica Mountains. Agoura Hills, CA.

    Lifecycle Monitoring of O. mykiss in Topanga Creek, California. Final Report to CDFG Contract No. P0750021

     Stillwater Sciences, R. Dagit and J. C. Garza. 2010. Lifecycle Monitoring of O. mykiss in Topanga Creek, California. Final Report to CDFG Contract No. P0750021. Resource Conservation District of the Santa Monica Mountains, Agoura Hills, CA.

    Die Off and Current Status of Southern Steelhead Trout (Oncorhynchs mykiss) in Malibu Creek, Los Angeles County, USA

    Dagit, R., S. Adams and S. Drill. 2009. Die Off and Current Status of Southern Steelhead Trout (Oncorhynchs mykiss) in Malibu Creek, Los Angeles County, USA. Southern California Academy of Sciences Bulletin Vol 108(1):1-15.

    Prepared for Contract No. P4050012 California Department of Fish and Game

    Dagit, R., S. Albers, and S. Williams. 2009. Prepared for Contract No. P4050012 California Department of Fish and Game. Resource Conservation District of the Santa Monica Mountains, Agoura Hills, CA.

    Tidewater Goby

    Summary of Tidewater Goby Observations, Malibu Lagoon, Malibu, CA 1996-2000

    Dagit, Rosi and S. Williams. 2005. Summary of Tidewater Goby Observations, Malibu Lagoon, Malibu, CA 1996-2000 for Permit PRT-811188. Data collected for Caltrans Mitigation Contract Repair of the Pacific Coast Highway Bridge over Malibu Lagoon. Submitted to USFWS, March 2005. Resource Conservation District of the Santa Monica Mountains, Topanga, CA.

    Southwestern Pond Turtle

    Topanga Turtle Study (Emys marmorata pallida) 2002-2006

    Dagit, R., M. Graves and C. Wheeland. 2006. Topanga Turtle Study (Emys marmorata pallida) 2002-2006. Funded by a grant from the Santa Monica Bay Restoration Commission. Resource Conservation District of the Santa Monica Mountains, Topanga, CA.

    Western Pond Turtle Study in the Topanga Creek Watershed: Yearly Report May 2003-2004

     Dagit, R. 2004. Western Pond Turtle Study in the Topanga Creek Watershed: Yearly Report May 2003-2004. Resource Conservation District of the Santa Monica Mountains, Topanga, CA.

    Western Pond Turtle Study in the Topanga Creek Watershed: First Year Report May 2002-2003

    Dagit, R. 2003. Western Pond Turtle Study in the Topanga Creek Watershed: First Year Report May 2002-2003. Resource Conservation District of the Santa Monica Mountains, Topanga, CA.

    Other Biological/Environmental Documents

    Removal Efforts and Ecosystem Effects of Invasive Red Swamp Crayfish (Procambarus clarkii) in Topanga Creek

    Garcia, C., E. Montgomery, J. Krug and R. Dagit. 2015. Removal Efforts and Ecosystem Effects of Invasive Red Swamp Crayfish (Procambarus clarkii) in Topanga Creek, California. Bulletin of the Southern California Academy of Sciences. Vol 114(1):12-21.

    Evidence for Negative Effects of Drought on Benthic Macroinvertebrate Community of a Southern California Stream

    Montgomery, E., C. Garcia, K. Krug, and R. Dagit. 2015. Evidence for Negative Effects of Drought on Benthic Macroinvertebrate Community of a Southern California Stream. Bulletin of the Southern California Academy of Sciences Vol 114(3):129-140.

    Long-term Molecular Marker Monitoring in the Topanga Creek Watershed

    Riedel, T., V. Thulsirag, A. G. Zimmer-Faust, R. Dagit, J. Krug, K. T. Hanley, K. Adamek, D. L. Ebentier, R. Torres, U. Cobian, S. Peterson, and J.A. Jay. 2015. Long-term Molecular Marker Monitoring in the Topanga Creek Watershed, CA. USA, Suggests That Coastal Fecal Indicator Bacteria are from Multiple Animal Hosts, Each with a Different Seasonal Pattern. Water Research 71:227-243.

    Topanga Source Identification Study Final Report December 2012-August 2014

    Dagit, R., J. Krug, K. Adamek, E. Montgomery, C. Garcia, S. Albers, J.A. Jay, T. Riedel, A. G. Zimmer-Faust, V. Thulsiraj, C. Marambio, S. Braband, D. Tufto and R. Sherman. 2014. Topanga Source Identification Study Final Report December 2012-August 2014. Prepared by the Resource Conservation District of the Santa Monica Mountains for Los Angeles County. Topanga, CA.