Promoting a collective stewardship that sustains the economic, environmental, and recreational benefits of a healthy San Joaquin River, including adequate flows, habitat, and native fisheries.
The GEOS Institute issued a DWR funded report “Future Climate, Hydrology, Vegetation, and Wildfire Projections for the Southern Sierra Nevada, California” in May 2014. This was the first information I have seen integrating global and local models into basic climate change data for our watersheds in the San Joaquin Valley. The data provided is significant to all Californians and should be reviewed and understood by water managers throughout the State. Planning today can help us to identify our vulnerabilities and strategies for adaptation to the changes that are already occurring. The term “Irreversible Climate Change” identifies that there are positive feedbacks in our climate system that kick in to such an extent that emission reductions are no longer effective.
The early data released in this report is shocking! Using widely accepted climate models, and integrating these projections with local hydrology data, we begin to see a range of possible or likely changes in our hydrologic system. The report emphasized how dominant evapotranspiration rates were to the potential for hydrologic change (changes in precipitation do not translate directly to changes in water supply). The following represent some standout data released under the ‘business as usual’ climate projections for Southern Sierra:
- Changes to Sierra Nevada hydrology are already occurring (15.8% declines in snow water equivalents, increased wildfires, 16% increase in frequency and intensity of very heavy precipitation, spring runoff occurring 1 to 3 weeks earlier)
- Increase in average annual temperature of up to 4.1 degrees Celsius by 2099 (up to 11 degrees Fahrenheit in Summer months)
- An average of 75% reduced runoff in Summer months (May through September, and reaching up to 95%-97% reduction in late summer)
- Broad agreement in models of 82% - 86% reduction in annual average snowpack
The report emphasized that the resource models we use today can no longer rely on historic data anticipate future conditions. We
Revive the San Joaquin Executive Director Chris Acree was recently interviewed for an article in an Italian Literary magazine ‘Il Venerdi di Repubblica.’ Read on and feel free to comment on the article as it digs into the subject of drought and the water wars....
Chinook salmon capture and release into spawning grounds below Friant Dam
Madera County Planning Commission Hearing for Tesoro Viejo Round 2
The State Water Resources Control Board, the state agency responsible for protecting the public trust resources and allocating water among competing uses, is aiming to enact new flow criteria to protect the San Francisco Bay-Delta estuary, starting with flows contributed to the Bay-Delta by the San Joaquin River. The Board has already determined that, in order to fully protect the public trust, 60% of the runoff in the San Joaquin watershed must make it to the Delta. This will be a highly politicized decision and may impact many water users as the Board seek to “go get” water enact these new standards.
Freshwater flows out of the San Joaquin and Sacramento River systems are necessary to repel saltwater incursion into the Central Valley from the flooding and ebbing of ocean tides through the San Francisco Bay. Recognizing this problem long ago,
Current Events and News, September 12, 2012
San Joaquin River Restoration Program Interim Flows shut down for flood facility maintenance:
Releases from Friant Dam will be reduced from September 1 - 23 to allow for repairs to the Chowchilla Bifurcation Structure. During this period, no flows will reach the structure. The work is being conducted to replace vibrating gate seals which may have threatened its structural integrity if unattended. Total releases from Friant Dam will return to 350 cfs on September 24. The SJRRP's fall pulse will be delayed until after November 15. Exact dates of the pulse will be provided at a later date and will be consistent with fish monitoring schedules of the program.
News: September 4, 2012: San Joaquin restoration will create 11,000 jobs
The restoration of the San Joaquin River will create 11,000 Valley jobs -- mostly short-term jobs in construction, says a new study from the University of California at Merced.
San Joaquin River conference- Please join us for the San Joaquin River Conference, "A Living River and a Vibrant Valley." The San Joaquin River Partnership has assembled a series of engaging workshops and field trips that highlight efforts now underway for restoring the river and improving life in Valley communities. The conference is designed to promote the exchange of ideas, build networks, and inspire everyone working on the San Joaquin River. The conference begins with an Opening Reception at the Coke Hallowell Center for River Studies (River Center). Conference sessions will be held in Fresno's Cultural Arts District, and mobile workshops will take place along the river.
October 3, 2012 - October 5, 2012
River Center - Oct. 3 & Warnors Theatre - Oct. 4-5
River Center: 11605 Old Friant Rd.
Warnors Theatre: 1400 Fulton St.
Join Revive the San Joaquin this Saturday in celebration of the Great Sierra Rivers Cleanup Day at Riverbottom Park. Help us clean up this local treasure and create a safe and enjoyable place to recreate on the San Joaquin River.
During the first three years of the Great Sierra River Cleanup more than 11,200 volunteers have joined together to remove over 526 tons of trash and recyclables from watersheds throughout the Sierra Nevada. Hundreds of community groups have spread across 22 counties and 1,052 river miles to pull appliances, cigarette butts, beverage cans, baby diapers, tires, furniture, and more from the rivers and streams that supply the State of California with 65 percent of its water. This effort, in partnership with the California