If we reach 100% after the current rains and then it stops raining for the season, then our percentage will start going down. This is the best one out there. Santa Clara, Alameda and San Mateo counties. DWR is one of many local, State and Federal entities that dictate water releases. I would like to make one small suggestion:. Quite an eye opener. Owned by the city of San Francisco, Hetch Hetchy Reservoir Find out more about the system at http://www.sfwater.org, BAWSCA Board Policy Committee Meeting, April 12, 2023 1:30pm. His recent work has examined the impacts of drought, threats to public lands and wildlife, and the nation's widening rural-urban divide. 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Monitoring location 11277200 is associated with a LAKE, RESERVOIR, IMPOUNDMENT in TUOLUMNE COUNTY, CALIFORNIA. But I would never have imagined how to put all the important information into a single plot. Im curious: Lk Almanor is the 8th largest reservoir in CA. Saved to my favorites now. Share sensitive information only on official, secure websites. Locked padlock The remaining 15 percent of water comes from runoff in the Alameda and Peninsula watersheds. It didnt end the drought, but it was definitely really good," said Ritchie. Hetch Hetchy is one of nine reserviors in a water system that serves San Francisco and other Bay Area communities. maybe label the vertical axis with aggregate total or system total capacity. The reservoir is eight miles long and the largest single body of water in Yosemite. reserved. P.S. it will be cool if there is a way to track the change since Dec or some such date. Isabella is filling quite slowly in order to test out the new $500 million spillway. Our drinking water comes from a variety of protected sources carefully managed by the SFPUC. 2022 All Rights Reserved. Lake Mendocino, which has a capacity of 122,400 acre feet, saw the biggest boost from 17% of storage capacity in December to 35% in January. The dam and reservoir are the source for the Hetch Hetchy Aqueduct, which provides water for over . United States. Usually with warm ARs, you get a dramatic increase in inflow, which can fill even very large reservoirs relatively quickly, like Oroville in 2017. 2013, photo, the Hetch Hetchy Reservoir is hazy with smoke . . the Hetch Hetchy Valley to its natural state. Super frustrating. Your email address will not be published. Exclusive: Stunning photos show Yosemite National Park under 15 feet of Warriors treating Andrew Wiggins with understandable patience, but his California snowpack hits highest level this century for March, could Map shows which parts of California exceeded entire years worth of rain, Map shows stunning improvement in California drought, Last chance to see: Bay Bridge lights turn off on Sunday. How can I apply to SFPUC? I love this this site too. Is that from melting snow and rain water coming from the mountains and filling it up? The citys water system also includes a water bank at Don Pedro Reservoir along the Tuolumne River, which was full as of Feb. 1. Draining Hetch Hetchy without depriving Bay Area residents of Lots of possibilities, just curious. The overall storage is said to have dropped by 57.4 to 56.4 (or 302 kaf). The gain came after weather gauges in the area recorded more than 5 inches from one storm. It is on the graph. . O'Shaughnessy Dam is a 430-foot (131 m) high concrete arch-gravity dam in Tuolumne County, California, United States.It impounds the Tuolumne River, forming the Hetch Hetchy Reservoir at the lower end of Hetch Hetchy Valley in Yosemite National Park, about 160 miles (260 km) east of San Francisco. Also, do they provide inflows and outflows for locations? For the first week of February, there was a slight increase for most reservoirs from January amounts. Didnt realize how bad things were there. This is an excellent tool you have put together. The area around Shasta has more volcanic soils that absorb rainfall than the Feather River drainage. Data and Tools use must be reasonable.. Thanks for the prompt reply! The snowpack acts as a natural reservoir and slowly releases water.. Hetch Hetchy is only one of nine reservoirs in the San Francisco Public Utility Commissions water system. word for a type of wild grass. Water is rapidly flowing into the state's reservoirs. 1 covering up to $875 million and much of the rest coming from federal loans to water suppliers. The Hetch Hetchy Valley today with the dam seen in the lower right. That includes the Tuolumne River, which provides water via Hetch Hetchy Reservoir to Bay Area customers. Yoohyun Jung is the Deputy Data Editor for The San Francisco Chronicle. A .gov website belongs to an official government organization in the GNSS2 - Level 2 Quality Survey Grade Global Navigation Satellite System. In the year prior to Oroville reaching capacity the interactive chart showed the rate of inflow over time. The main goal of this visualization is to provide a quick overview of the status of the main reservoirs in the state and how they compare to historical levels. Hetch Hetchy is only one of nine reservoirs in the San Francisco Public Utility Commission's water system. Francisco Bay Area. Its currently listed on this page as 29kaf full, but the usgs.gov page below says Hetch Hetchy is at 299.7kaf full. The commission plans to decide Nov. 23 whether to formally ask customers to conserve water. Near the town of La Grange, the river exits the Sierra Nevada foothills and flows through a gently sloping alluvial valley that is incised into Pleistocene alluvial fans. Partly because of low water, the rivers chinook salmon runs have plummeted from tens of thousands of fish annually a few decades ago to fewer than 1,000 in recent years. River. Impounded by OShaughnessy Dam, Hetch Hetchy Reservoir water passes through hydroelectric powerhouses before it enters the San Joaquin Pipelines, the Tesla Ultraviolet Treatment Facility, and the Coast Range Tunnel on its journey to the Bay Area. So they should be saving much more and deal with the .000001 of risk later. We provide water directly to customers in San Francisco and wholesale through 26 Water agencies in Alameda, Santa Clara, and San Mateo counties. Thanks. May 24, 2022 - BAWSCA Statement About the Adoption of a Systemwide Water Use Reduction of 11%. Lake Oroville. The current power produced by the SFPUC system, although not carbon-based, is not green since it requires the continued destruction of significant habitat. the map graph doesnt include berryessa. It was at 60 percent as of March 1 and rising, according to the Bureau of Reclamation. Hetch Hetchy Water System The system originates more than 100 miles from its primary customers, in Yosemite National Park. 9 of 12 10 of 12 Hetch Hetchy Reservoir with Wapama Falls near Groveland, Calif. on Wednesday March 12, 2014, is currently at fifty percent of capacity. The SFPUC has voiced concerns with the Plan, as it would dramatically reduce the agencys water supply, leaving it subject to significant rationing in droughts and more extreme weather conditions brought on by climate change. SFGATE took a look at reservoir levels three days after the Oct. 24 storm and below we take another look, examining water level rises and storage increases at a broader range of reservoirs roughly a week after the atmospheric river event. Thats just another very strong indication visually that its a big water year.. Arg. The maximum that the city has put away is 570,000 acre-feet of water. Thanks for taking the time to do that. Over the summer, Gov. The trail takes you to the base of Wapama Falls, passing two smaller waterfalls (during spring) on the way. Also a little nit. in 2018. Its not possible to see or really interact with the tiniest slivers. Located in the northwest portion of Yosemite National Park, Hetch Congress had to approve the project because it was As of 5pm on 1/18, the data appears correct (~58k acre feet), but an hour ago it was reading off the chart (3X above what they are allowed to store right now). reservoir violates the California Constitution specifically the The SFPUC hoards water in dry years when they dont need to, said Peter Drekmeier, policy director at the conservation group Tuolumne River Trust. proposition that would have funded an $8 million study on how This dashboard is great! Shasta, Oroville, Hetch Hetchy and many others were built by damming large rivers. Maybe just acre/ft with ^ or down arrow. The information on Isabella has been fluctuating drastically (by a factor of 10!) The adopted Plan addresses water quality issues affecting the ecosystem and fisheries of the Bay-Delta system. Current conditions of LAKE OR RESERVOIR WATER SURFACE ELEVATION ABOVE NGVD 1929 and RESERVOIR STORAGE are available. They have restoredMono Lake,improved stream flows on the North Coast and in theCentral Valleyand diminished the threat to native fish in the Bay Delta. Voters rejected a 2012 This is of particular interest as the self-imposed restrictions deadline is approaching and the federal government may have to step in and mandate restrictions across the 7 states, including California. Upcountry and the Bay Area. Its fluctuating between ~107% and ~20% from one hour to the next (reading 107.6 atm). not passed until 1928 five years after the dam was built. I see many of the local canals flowing with lots of water. I was thinking that it would be interesting to compare inflows and outflows. An official website of the United States government. A wet December produced ample snowfall, which is still sitting at high elevations. So on Jan 10 were at 82% of the average for Jan 10. Compared to the historical snowpack for this time of year, the May 2021 survey shows that we are only 2 to 5 percent of normal. Water storage facilities include watersheds, dams, and reservoirs including: Calaveras, San Antonio, Crystal Springs, Pilarcitos, and San Andreas. Should be fixed at some point. Required fields are marked *. currently, there is a lot more water coming in than going out. I do not see Diamond Valley Lake Resevoir on this page. Python is used to extract the data from this page hourly and wrangle the data in to a clean format. draining the reservoir to court, arguing in 2015 that the However, I am interested in how much we are saving. Navigation and Navigable Waters 33.208.82 Hetch Hetchy, Cherry Valley, and Don Pedro Dams and Reservoirs. You can email her at agraff@sfgate.com. Id only be interested in the totals from Oroville and Shasta. The Bay Area portion of the System includes water collection, treatment, and transmission facilities from the Alameda East Portal to the wholesale service area and terminal reservoirs in San Francisco. California boosts water deliveries to highest level in years, thanks to storms, California reservoir levels: Charts show water supply across the state, Track water shortages and restrictions across Bay Area. As the system aged, especially in an era of heightened safety awareness following the Loma Prieta Earthquake in 1989 and drought in the 1990s, it became evident that the system required a complete overhaul. Your email address will not be published. Hours: Year-round, but only accessible by car when the Hetch Hetchy Road is open. Thats a very poor design. Several cities and water agencies that are now part of BAWSCA urged Congress to pass the Raker Act in 1913, the law that allowed federal lands in the Sierra Nevada Mountains, including Hetch Hetchy Valley in Yosemite National Park, to be used to build the water system. environmental context. Long-term values for reservoir inflows use maximum number of complete water years in record. Nate, thanks for the insight. At the same time, theyve also said its critical to maintain sufficient water supplies to keep Bay Area communities and its economy running during a prolonged drought. O'Shaughnessy Dam was built on the Tuolumne River in 1923 to create Hetch Hetchy Reservoir. After record snowfall in December was followed by a dry January, there are renewed concerns of drought. Therefore flood control agencies take the more conservative route and order the release of water. Its supposed to be brown. Interesting. Gavin Newsom asked all California residents to voluntarily reduce use by 15% compared with use in 2019. Meanwhile, the group Restore Hetch Hetchy is urging the SFPUC to abandon Hetch Hetchy Reservoir. You dont see runoff right away, the snow is still up there, frozen, doing what we want it to do, he said. by the Raker Act. diversion of water? Restore Hetch Hetchy claimed the phrase had
Absolutely zero reason to be releasing this much water from these reservoirs. Not only does it supply 85 percent of the water for 2.6 million people in San Francisco, controlled releases via the O'Shaughnessy Dam are helping preserve downstream specieseven in dry . Yes, and why is Twitchell Dam also not listed? Hoping they start building more reservoirs soon. The snowpack there, which will eventually melt and flow into reservoirs, is already bigger than the average peak snowpack, which typically comes around April 1. Whats going on with the water level at Oroville? One of the big challenges in water management is controling the release. 7 days 30 days Data have been checked by the reporting agency. It looks like the red and blue lines are backwards on Folsom. BAWSCA Board of Directors Meeting, March 16, 2023, 6:30 PM. The north (side of the reservoir) usually has two waterfalls going at the best of times, but youll see up and down the canyon walls, if you look close, you count there are about 12 waterfalls running now, said Steve Ritchie, the SFPUCs assistant general manager of water enterprise, during a recent drought report to the agencys governing board. The cities of Burlingame, Hayward, Menlo Park, Palo Alto, Redwood City and San Mateo, along with the Alameda County Water District, were among Bay Area communities whose support was influential in persuading Congress to pass the controversial Act, and President Woodrow Wilson to sign it.