Within San Francisco, we manage water distribution in the City. But they'll cost you, Fight at high school basketball game in S.F. It seems likely one of those two readings is wrong. The water treatment facilities are Tesla Ultraviolet Treatment Facility, disinfecting the Hetch Hetchy supply; Sunol Valley Water Treatment Plant, treating the water from the Calaveras and San Antonio supply as well as the stored Hetch Hetchy supply; and Harry Tracy Water Treatment Plant, treating the water from the Crystal Springs and San Andreas supply. That cant be right. reserved. The upcountry portion of the System begins with Hetch Hetchy Reservoir in Yosemite National Park. There is something strange about the data over the last two days (Jan.17 to Jan. 19): These sources include surface water stored in reservoirs located in the Sierra Nevada, Alameda County and San Mateo County, and groundwater supplies stored in a deep aquifer located in San Francisco and San Mateo counties. This is a marimekko (or mekko) graph which may take some time to understand if you arent used to seeing them. Lock Located in the northwest portion of Yosemite National Park, Hetch It was my first time using D3 and it took me a long time to get up to speed. . The trail includes spectacular views of Tueeulala and Wapama Falls. The current power produced by the SFPUC system, although not carbon-based, is not green since it requires the continued destruction of significant habitat. Yep. Great Job on this site! proposition that would have funded an $8 million study on how } A lock ( In another sign that Californias drought is easing, San Francisco captured more than a years worth of water in just one months time. San Francisco will be in great shape going into 2023, said Spreck Rosekrans, executive director of Restore Hetch Hetchy Its unfortunate that too little is being done with these flows to recharge groundwater basins to help cities and farms and even restoring Hetch Hetchy Valley., Kurtis Alexander is a San Francisco Chronicle staff writer. The Hetch Hetchy reservoir, which supplies water for San Francisco and other parts of the Bay Area, was at 77% of its 360,000-acre-feet storage capacity in January compared to 73% in December, and on Feb. 7, it was up to 82%. How can I match up other monitoring locations similar to the ones on this Interactive Dashboard? Kurtis Alexander is an enterprise reporter for The San Francisco Chronicle, with a focus on natural resources and the environment. Restoring Hetch Hetchy will require some changes in how San Francisco moves and stores water. I realize there we dont want to reservoirs overflowing, but why are we still below historical average? Congressman Tom McClintock has re-introduced theYosemite National Park Equal Access and Fairness Act, a bill that would allow non-motorized Sign up to receive blog posts and other news by email. Local reservoir inflows have negative daily flow rates set to zero. The amount stored is increasing, just not by a lot. Love this. During the winter months, they let water out of the reservoirs in anticipation of large storms. The new 68-mile (109 km) railroad wound its way up the narrow canyon of the Tuolumne River past sharp curves and up steep 4% grades. the city wastes water, so it was a moot issue. They also built a spillway that was too steep and did not install energy dissipators along the spillway. 7 days 30 days Have you looked into that side of the water management equation? San Francisco and the thousands of suburban . Lots of possibilities, just curious. Why is it not listed? Francisco Bay Area. The Hetch Hetchy Valley today with the dam seen in the lower right. Even with the latest precipitation, Folsoms values was unchanged. Diamond Valley Lake is a man-made storage reservoir for storing imported water only. 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. A dry January with little rainfall across much of Northern California actually didnt hurt the states water storage levels, according to data from the California Department of Water Resources. A small portion of the citys water comes from local reservoirs. Secure .gov websites use HTTPS After the reservoirs Hetch Hetchy water travels 160 miles via gravity from Yosemite to the San Francisco Bay Area. I second that request. Hi Keith, you could de-select the large reservoirs from the menu at the top right. Current conditions of LAKE OR RESERVOIR WATER SURFACE ELEVATION ABOVE NGVD 1929 and RESERVOIR STORAGE are available. Lock Charts from the California Department of Water Resources show conditions at key state reservoirs on Oct. 22 (left) and on Nov. 2 (right). The question was, what constitutes unreasonable method of 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. 1 kaf is the amount of water that would cover 1 acre in one thousand feet of water (or 1000 acres in water in 1 foot of water). . So my question is, How do we know if we are saving the water for later release (late summer) or are we releasing it to the ocean? I live close to Eastman Lake. How can I apply to SFPUC? Restore Hetch Hetchy. United States. Share sensitive information only on official, secure websites. These sources are diverse in both the origin of the supply snowmelt, rainfall and recharge of groundwater and their location within our system. Its water supply Hetch Hetchy Reservoir, in the Sierra Nevada is 80% full, the ground is saturated and near-record rainfall has occurred in recent days. For the first week of February, there was a slight increase for most reservoirs from January amounts. Hetch Hetchy Level before the storm: 3,729.68 feet Level after the storm: 3,750.99 feet Total rise: 21.31 feet Storage before the storm: 221,500 acre-feet Storage after the storm: 257,800. The reservoir is now projected to cost $4.4 billion, with Prop. According to the San Francisco Public Utilities Commission, Hetch It was at 60 percent as of March 1 and rising, according to the Bureau of Reclamation. In fact, thanks to a little snowmelt, water levels were up for all reservoirs from December to January. Data and Tools 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. Is it because the laws have changed on how much each reservoir can hold or is it in anticipation of significantly more rain? Restoring Hetch Hetchy Valley will allow all three power plants to remain operational but will reduce power generation at these by about 20% an average of about 350 million kWh per year. The overall storage is said to have dropped by 57.4 to 56.4 (or 302 kaf). Much of the recent inflow was to Hetch Hetchy, which can hold about 360,000 acre-feet of water and was 83% full at the start of the month. Impounded by O'Shaughnessy 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. She is also an alumna of Reveal from the Center for Investigative Reporting Investigative Fellowship and The New York Times Student Journalism Institute. 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. reservoir violates the California Constitution specifically the Sierra Club unsuccessfully fought the reservoirs establishment Our drinking water comes from a variety of protected sources carefully managed by the SFPUC. Kudos to the designers. This other page: https . Why is Lake Nacimiento and Lake San Antonio not listed? All of this work is nothing short of brilliant. They are releasing water into the canals. I was thinking that it would be interesting to compare inflows and outflows. So while that is kind of good news, he said, things start to look more grim after January produced paltry rainfall and, so far, February has also been dry. Restore Hetch Hetchys subsequent appeal to the ruling was Your tools are awesome just hurts when you receive bad data at times! With how we can now basically pinpoint future precipitation amounts at least a month in advance, no reason to not let these reservoirs fill up past historic averages for this date. supplies water to the San Francisco Bay Area. A separate vote would have been If you click on the list button in the top right of the dashboard, it will show a list of the reservoirs (in order of size from largest to smallest) and you can check which ones you would like to display. The BAWSCA agencies are therefore key stakeholders in ensuring the system serves as a reliable source of high quality water. It looks like the red and blue lines are backwards on Folsom. Secure .gov websites use HTTPS The upcountry portion of the System begins with Hetch Hetchy Reservoir in Yosemite National Park. San Francisco maintained the phrase only Shasta is very large and could hold about 3.5 cubic kilometers of water at full (but not flood) capacity. 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. A .gov website belongs to an official government organization in the Its not possible to see or really interact with the tiniest slivers. document.getElementById('globes').contentWindow.location.reload(); You dont see runoff right away, the snow is still up there, frozen, doing what we want it to do, he said. These graphs will always read low because they represent the percentage of the seasonal average at some point before the end of the season. Thanks for providing it for public information. 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. The OShaughnessy Dam, which was completed in 1938 and is 430-feet tall, impounds water in Hetch Hetchy Reservoir for communities in the Bay Area. Climbers Timmy O'Neill (left) and Lucho Rivera atop a wall overlooking Hetch Hetchy Reservoir. I do not see Diamond Valley Lake Resevoir on this page. Reservoir Report 4,670 ft -0.02% today 100% of normal Normal Water lake or reservoir water surface elevation above ngvd 1929, ft at Cherry Lk Nr Hetch Hetchy Ca is currently 4,670 ft, approximately 100% of normal. sends student to hospital, Heres how much rain and snow is on the way this weekend, Your Privacy Choices (Opt Out of Sale/Targeted Ads). }, false); Lake Tahoe really isnt part of California water, as the outflow goes to Nevada. the map graph doesnt include berryessa. Similar to the water supply issues discussed above, the amount of power replacement is small in a statewide context less than of 1% of the renewable power supply being developed this decade alone. **new combined California reservoir and snowpack visualizer**, made a bar graph showing the overall level of water in the major California reservoirs, the California Department of Water Resources (DWR) Data Exchange Center. At the moment, I am not interested in the debate. Its supposed to be brown. Forty-six percent . Waterfalls gushed at Hetch Hetchy after an atmospheric river event in October 2021. This is a great and very thoughtfully designed web site! City officials have touted their efforts to help salmon, for example by timing water releases to assist with migration and restoring breeding grounds. For example, the average storage level for Feb. 7 is usually 65% of capacity for Trinity Dam, but currently its at 31%. The Hetch Hetchy Reservoir that supplies San Francisco, seen here in February, is among those that have refilled after two months of storms. Wapama Falls (moderate) 5 mi (8 km) round-trip; 2 hours. All rights reserved. Good info to know. Another not monitored by the State? Other California water agencies have done far more to reduce the impact of their system on Mono Lake, the Trinity and San Joaquin Rivers, and the Bay-Delta. What happened to the Hetch Hetchy level? So they should be saving much more and deal with the .000001 of risk later. Copyright Barry Rokeach, 2014. I wonder why it doesnt work for you. You can email her at agraff@sfgate.com. This chart only shows reservoirs filled via natural flow/rainfall. Find out more about the system at http://www.sfwater.org, BAWSCA Board Policy Committee Meeting, April 12, 2023 1:30pm. With modest additional investments San Francisco will be able to maintain an uninterrupted supply of high quality Tuolumne River water. It would be really interesting to visualize whether were able to replenish ground water this year after all the precipitation. . The tremendous inflow to city reservoirs during the recent storms, mostly in and around Yosemite National Park, has lifted San Franciscos total water storage to near capacity. The information on Isabella has been fluctuating drastically (by a factor of 10!) A different story is unfolding at Hetch Hetchy reservoir in Yosemite National Park, where water is being released to conserve and restore wildlife. So its volume is counted as Orville inflow. do so. DWR is one of many local, State and Federal entities that dictate water releases.
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