In summary
In the face of climate change, biodiversity loss and conflict over water, California urgently needs to rethink how it manages water for the environment.
Ted Grantham is an adjunct fellow at the PPIC Water Policy Center and an adjunct professor in the department of environmental science, policy and management at the University of California, Berkeley, tgrantham@berkeley.edu.
Dams, diversions, and land conversion have substantially altered Californias rivers and disrupted the processes that sustain ecosystem health. The result is a crisis for native fish and wildlife and the loss of many benefits we derive from river ecosystems.
Keep tabs on the latest California policy and politics news
Of the states more than 125 native fishes, seven species are already extinct and 100 are in decline, including half of Californias salmon and steelhead species. In the face of the changing climate, biodiversity loss and continuing conflict over water, California urgently needs to rethink how it manages water for the environment.
In some of the states rivers, the law requires the protection of environmental flows water left in rivers to protect salmon and other sensitive species. Commonly, these requirements prescribe minimum flows, usually water released from dams or limits on water diversions for other uses. Unfortunately, this minimum flow approach fails to preserve the natural variation needed to maintain ecosystem functions, such as the movement of sediment, maintenance of water quality, and environmental cues for species migration and reproduction.
In our new report, we recommend moving away from minimum flow standards to the use of functional flows the seasonal components of river flow that sustain the biological, chemical and physical processes upon which native freshwater species depend. This approach doesnt mandate restoring natural flows or historical ecosystem conditions. Instead, it focuses on preserving key functions that maintain ecosystem health and are broadly supportive of native fish and wildlife.
A functional flows approach also requires physical habitat improvements such as barrier removal, channel restoration, and floodplain reconnection projects to restore critical interactions between flowing water and land.
Too often, physical habitat restoration is not coordinated with changes in environmental water management. Aligning functional flows with physical habitat restoration rather than a flows-only or habitat-only approach brings a greater environmental return on investment. It also creates opportunities for multi-benefit projects that meet the needs of people and the environment.
Functional flows can be implemented in a variety of ways, including by modifying dam operations, altering the timing and location of diversions, and managing discharges of wastewater and stormwater to rivers and streams. But creative changes in governance are also needed to put functional flows into practice.
We recommend the allocation of an ecosystem water budget a fixed volume of water for the environment, overseen by an independent trustee to be flexibly managed for functional flows. This flexibility would support cooperative solutions among water users and, critically, would allow for adapting to new information and changing conditions.
In some cases, functional flows will require more water for the environment, with corresponding declines in water supply for other purposes. Yet, by maximizing the benefits of environmental water, this approach provides greater assurances that water is being used effectively. A fixed water budget also brings greater certainty over supply reliability for other water users.
Improvements in ecosystem health would also deliver significant public benefits, including better water quality and recreational opportunities. It would also reduce the likelihood of disruptions from new Endangered Species Act listings. Actions taken now to improve ecosystem health for all native species not just those currently protected can pay off in the future by avoiding additional regulatory burdens.
Sustainable management of water resources is one of Californias and indeed the worlds grand challenges. California will continue to face intense competition over water resources, forcing difficult decisions over how to allocate water to protect freshwater ecosystems for all uses, not just water supply. A functional flows approach enables a more efficient and effective use of environmental water, and can be an important tool in managing the states rivers for an uncertain, but certainly changing, future.
_____
Jeffrey Mount has also written about how California should stop relying on the Endangered Species Act in managing the environment and Delta outflow explained.
As a nonprofit newsroom, we rely on the generosity of Californians like you to cover the issues that matter. If you value our reporting, support our journalism with a donation.
Originally posted here:
New approach needed to protect health of Californias rivers - CALmatters
- Green with Envy | How to Spot an Eco-Snob | Part III - November 8th, 2009 [November 8th, 2009]
- EcoLogo - November 8th, 2009 [November 8th, 2009]
- 5 Ways to Green Your Exercise Routine - November 8th, 2009 [November 8th, 2009]
- Seed Bombs - November 8th, 2009 [November 8th, 2009]
- Guerrilla gardening - November 8th, 2009 [November 8th, 2009]
- Green Your Morning Routine - November 8th, 2009 [November 8th, 2009]
- Environmental Benefits of Telecommuting - November 8th, 2009 [November 8th, 2009]
- Safeway Sponsors Portland Community Cleanup - November 8th, 2009 [November 8th, 2009]
- Electric Vehicle Race - November 8th, 2009 [November 8th, 2009]
- Portland Bridge Pedal 2009 - November 8th, 2009 [November 8th, 2009]
- E-waste in Oregon - November 8th, 2009 [November 8th, 2009]
- Bike Sharing in Portland - November 8th, 2009 [November 8th, 2009]
- Bucks for the Bay Challenge - November 8th, 2009 [November 8th, 2009]
- Drive to Make a Difference with MyMPG - November 8th, 2009 [November 8th, 2009]
- Bathroom Sprayers - Green your Toilet Routine - November 8th, 2009 [November 8th, 2009]
- Ubuntu OS can Save Energy - November 8th, 2009 [November 8th, 2009]
- Green Metropolis, David Owen - November 8th, 2009 [November 8th, 2009]
- Sustainable Pens: GLO Pens - November 8th, 2009 [November 8th, 2009]
- International Day of Climate Action - November 8th, 2009 [November 8th, 2009]
- Donate to Oregon Toxics Alliance - November 8th, 2009 [November 8th, 2009]
- Biomass Energy Generation Myths - November 8th, 2009 [November 8th, 2009]
- Crude The Real Price of Oil | Playing in Portland - November 8th, 2009 [November 8th, 2009]
- Pictures From 350 Climate Day in Portland - November 8th, 2009 [November 8th, 2009]
- Arcimoto Electric Vehicles in Oregon - November 8th, 2009 [November 8th, 2009]
- Urban Rooftop Wind Turbines - November 8th, 2009 [November 8th, 2009]
- Chromium 6 Emissions from ESCO in Portland - December 13th, 2009 [December 13th, 2009]
- Food Inc. Review - December 19th, 2009 [December 19th, 2009]
- Making Maps with Google Earth and Google Maps by Shane Bradt of the University of New Hampshire Cooperative Extension - March 23rd, 2010 [March 23rd, 2010]
- Demonstration of Miradi 3.1 by Nick Salafsky of Foundations of Success - March 23rd, 2010 [March 23rd, 2010]
- Advanced Mashups – KML and the Mapping API by Cary Chadwick of the University of Connecticut Center for Land Use Education and Research - March 23rd, 2010 [March 23rd, 2010]
- Demonstration of InVEST by Heather Tallis of the Natural Capital Project - March 23rd, 2010 [March 23rd, 2010]
- GIS Maps Online by Emily Wilson of the University of Connecticut Center for Land Use Education and Research - March 23rd, 2010 [March 23rd, 2010]
- From ArcGIS to Web Maps: Simple Techniques for Publishing GIS Maps Online by Emily Wilson of the University of Connecticut Center for Land Use Education and Research - March 25th, 2010 [March 25th, 2010]
- Demonstration of Marine InVEST by Anne Guerry of the Natural Capital Project - March 31st, 2010 [March 31st, 2010]
- Eliminate and Decrease Styrofoam - March 31st, 2010 [March 31st, 2010]
- Portland Plans to Spend $600 million on Master Bike Plan - April 2nd, 2010 [April 2nd, 2010]
- (Webinar in Spanish) Demostración sobre Vista 2.5 de NatureServe en línea (Webinar) por Ian Varley, Carmen Josse, y Alexandra Sanchez de Lozada de NatureServe. - April 6th, 2010 [April 6th, 2010]
- Using and Adding Your Content to Google Ocean by Charlotte Vick, Google Content Manager of Mission Blue - April 13th, 2010 [April 13th, 2010]
- End Paper Receipts - May 1st, 2010 [May 1st, 2010]
- Demonstration of CanVis by Chris Haynes of NOAA Coastal Services Center - May 6th, 2010 [May 6th, 2010]
- Demonstration of HD.gov Web Portal by Jeff Adkins from NOAA Coastal Services Center - May 13th, 2010 [May 13th, 2010]
- Demonstration of Ecosystem Assessment and Reporting Tool by Steve Schill of The Nature Conservancy - May 13th, 2010 [May 13th, 2010]
- Demonstration of Version 2.0 of the Multipurpose Marine Cadastre by Adam Bode and Brian Smith of NOAA Coastal Services Center - May 17th, 2010 [May 17th, 2010]
- CRUDE Filmmakers Subpoenaed by Chevron - May 22nd, 2010 [May 22nd, 2010]
- Demonstration of the Digital Coast Coastal Inundation Toolkit by Steph Beard, Jodie Sprayberry and Billy Brooks of NOAA Coastal Services Center - May 25th, 2010 [May 25th, 2010]
- Presentation on the Creating Resilient Communities EBM Tool Demonstration Project by Jocelyn Hittle of PlaceMatters - June 10th, 2010 [June 10th, 2010]
- Presentation on Economic Data Needed for EBM by Linwood Pendleton of Duke University - October 11th, 2010 [October 11th, 2010]
- Recycling Water - October 16th, 2010 [October 16th, 2010]
- ODOT Partners with Oregon Toxics Alliance to Reduce Pesticides - October 17th, 2010 [October 17th, 2010]
- Goats Hired to Mow Portland Lot - October 17th, 2010 [October 17th, 2010]
- A World of Health: Connecting People, Place, and Planet - October 17th, 2010 [October 17th, 2010]
- Alternative Recycling Options - October 17th, 2010 [October 17th, 2010]
- No More Bullying the Bull Trout - October 17th, 2010 [October 17th, 2010]
- 1000+ EV Charging Stations Slated for Oregon I-5 Corridor - October 17th, 2010 [October 17th, 2010]
- The Vertical Farm Concept - October 17th, 2010 [October 17th, 2010]
- Blog Action Day 2010 | Water - October 17th, 2010 [October 17th, 2010]
- Eco Districts - October 24th, 2010 [October 24th, 2010]
- Will The Nissan Leaf Thrive? - October 24th, 2010 [October 24th, 2010]
- A Green Railroad - October 24th, 2010 [October 24th, 2010]
- Biomass is not Oregon's clean-energy future as currently promoted - October 24th, 2010 [October 24th, 2010]
- Electrified Parking Spaces - October 24th, 2010 [October 24th, 2010]
- Tree Planting - October 24th, 2010 [October 24th, 2010]
- Three Tips to Reduce Your Carbon Footprint and Live Longer. - October 24th, 2010 [October 24th, 2010]
- Biomass is not Oregon’s clean-energy future as currently promoted - October 31st, 2010 [October 31st, 2010]
- Rail~Volution - October 31st, 2010 [October 31st, 2010]
- Green Streets Initiative - October 31st, 2010 [October 31st, 2010]
- Mayor Kitty Piercy and Envision Eugene - November 7th, 2010 [November 7th, 2010]
- The Willamette River Transit Bridge - November 13th, 2010 [November 13th, 2010]
- Collaborative Learning and Land Use Tools to Support Community Based Ecosystem Management by Chris Feurt of the Wells National Estuarine Research Reserve - November 14th, 2010 [November 14th, 2010]
- Portland Federal Building Begins Green Makeover - November 14th, 2010 [November 14th, 2010]
- Vestas’ New HQ in Portland Shoots for LEED Platinum - November 14th, 2010 [November 14th, 2010]
- College Degrees to Get You in the Environmental Field - November 14th, 2010 [November 14th, 2010]
- Demonstration of openNSPECT, an Open Source Version of the Nonpoint-Source Pollution and Erosion Comparison Tool by Dave Eslinger of NOAA Coastal Services Center - February 14th, 2011 [February 14th, 2011]
- Demonstration of EMDS by Keith Reynolds of the US Forest Service - February 14th, 2011 [February 14th, 2011]
- Demonstration of Habitat Priority Planner by Chrissa Waite and Danielle Bamford of NOAA Coastal Services Center - February 14th, 2011 [February 14th, 2011]
- Presentation on the Coastal Adaptation to Sea Level Rise Tool (COAST) by Sam Merrill of the New England Environmental Finance Center - February 14th, 2011 [February 14th, 2011]
- Presentation on the Coastal and Marine Ecological Classification Standard by Kathy Goodin of NatureServe - February 14th, 2011 [February 14th, 2011]
- Demonstration of Coral Reef Scenario Evaluation Tool (CORSET) by Jessica Melbourne-Thomas of the University of Tasmania - February 14th, 2011 [February 14th, 2011]
- Demonstration of Multi-scale Integrated Models of Ecosystem Services (MIMES) by Roel Boumans and David McNally of AFORDable Futures LLC - February 14th, 2011 [February 14th, 2011]
- Creating Life in the Desert - February 14th, 2011 [February 14th, 2011]