Design, Policy, & Planning
The reports, studies, and tools listed here are instrumental for interpreting natural resources in the Los Angeles region, and for advancing regenerative planning, policy, design, and continuing research.
Estimating Spatially and Temporally Varying Recharge and Runoff from Precipitation and Urban Irrigation in the Los Angeles Basin, California
Modeling of rainfall and runoff across the Los Angeles Basin with comprehensive inventory, finding on average: (1) evapotranspiration accounts for the greatest loss from the water cycle at approximately 1,479,308 acre-feet a year (AFY), runoff at 593,529 AFY, and recharge at 183,031 AFY.
Watershed Management Group
Los Angeles is not a desert, but the Watershed Management Group in Tucson, AZ is an extensively practiced and definitive source on nature-based solutions for water management in flashy systems like ours.
Heal the Bay, Green LA Coalition, and Climate Resolve 2015
Guide and series of reports on best practices, policy, and feasibility for implementing living streets—an integration of green, cool, and complete streets.
US Bureau of Reclamation and LA County Flood Control District 2016
Comprehensive evaluation of runoff from different climate models, and project alternatives to address climate adaptation. Key points include river reclamation as a leading regional solution, and the significant potential for distributed projects to address flood management and water supply.
Eric Stein, Shawna Dark, Travis Longcore, Nicholas Hall, Michael Beland, Robin Grossing, Jason Casanova, Martha Sutula 2007
Covering San Gabriel River morphology and associated cover over time, with characteristics that translate to other braided channel systems of the LA Basin including the Los Angeles River.
The River Project 2018
Cost-benefit review of distributed, nature-based projects.
Ryan Snyder Associates and Transportation Planning for Livable Communities (Los Angeles County Department of Public Health and UCLA Luskin School of Public Affairs 2011)
Comprehensive guidance on living streets serving as a template for inclusion and adoption by agencies and organizations.
Leading guides for regenerative, practical, and hands-on water capture, conservation, and reuse.
Council for Watershed Health 2014 and 2016
Monitoring study instigated in 2000 that has evaluated the groundwater quality impacts of stormwater capture projects. A gold standard in research and evaluation, demonstrating that capture projects are net positive for water quality, even at a heavy industrial site.
Laura Allen 2015
Hands-on comprehensive guide for greywater reuse, rainwater harvesting, and waterless toilets at home.
Michael Drennan, Richard Haimann, Adi Liberman, Blake Murillo, Richard Watson, and Melanie Winter (Coalition for Our Water Future 2015)
A response to the 2013 Clean Water/Clean Beaches Measure proposed parcel fee, exploring potential incentives for managing stormwater on private property.
Plants and Ecology
The State of California is home to approximately 6,500 native plant species and subspecies, about 30% of which are endemic and the LA Region is part of a recognized biodiversity hotspot for both the impressive diversity and significant challenges faced by local plants and the wildlife that relies upon them. Oft-quoted, in 1989 Faber et al. estimated at the time that 90-95% of all historical riparian areas in Southern California have been lost. Beyond the value of rarity alone, riparian areas are foundational corridors in arid regions supporting many species across land cover types, more than any other habitat in our region.
California Invasive Plant Council (Cal-IPC)
The definitive source on California invasive plants.
California Native Plant Society (CNPS)
Inventory of native plants, profiles, and conditions relevant to plant material by specific location (elevation, precipitation, average high and low temps).
Diego Martino, Christine Lam, and Travis Longcore (Green Visions Plan for 21st Century Southern California 2005)
Methods for targeting species for conservation.
John O. Sawyer, Todd Keeler-Wolf, and Julie Evens (California Native Plant Society 2009)
Index of plan associations across California that is the basis for our State-recognized vegetation classification system.
Betsy Landis 2009
Brief primer on planting and caring for native plants, with list of native plant nurseries.
Partners in Flight
Resource on avian species at the flyway scale, addressing habitat and bioregions down to specific species profiles that are comprehensive and peer-reviewed.
Bart O'Brien 2007
One of the best lists for appropriate (and inappropriate) local vegetation cover in riparian and adjacent upland areas in the LA Basin. The LA River shares many of the same geophysical conditions as the San Gabriel River, and the lists translate well.
Resource for native plant care and guidance, sales, classes, and an annual native plant garden tour.
Larry Costello and Katherine Jones 2014
Comprehensive peer-reviewed inventory of water use by plant species, with guidance relevant to California Model Water Efficient Landscape Ordinance (MWELO).
Keith Porter et. al. (US Geological Survey [USGS] 2011)
Study evaluating the ARk Storm: the Atmospheric River 1,000-year event (similar to the storms and resulting floods of 1861 and 1862). As compared with a severe earthquake event in the Los Angeles area, the flood impact is projected to be just as likely to occur and could cost on the order of $725 billion, which is nearly 3 times the loss.
US National Oceanic and Atmospheric Administration (NOAA) 2018
Estimates that climate-related disasters cost the US $306B in 2017.
Multihazard Mitigation Council (The National Institute of Building Sciences 2017)
Proactive management is key. Evaluation of 23 years of federally funded mitigation grants and finding that the nation can save $6 in future disaster costs for every $1 spent on hazard mitigation.