best to drain the valley. While forecasters can predict the likelihood of future rainfall over large areas, they cant pinpoint it to the degree needed to determine whether a particular watershed/reservoir will overflow and cause damage and loss of life. Hi Keith, you could de-select the large reservoirs from the menu at the top right. It looks like the red and blue lines are backwards on Folsom. An official website of the United States government. Its important to note that other communities in California have taken actions in far greater magnitude than SF to make our waterways more sustainable. CHERRY LK NR HETCH HETCHY CA Important Legacy real-time page Monitoring location 11277200 is associated with a LAKE, RESERVOIR, IMPOUNDMENT in TUOLUMNE COUNTY, CALIFORNIA. Our reservoirs were alarmingly low. Greetings from Mount Laurel New Jersey. Thank you for a beautiful job. I see many of the local canals flowing with lots of water. Thats a great suggestion and one that would be particularly helpful! A separate vote would have been The group says the recent plethora of water shows that the city could do without Hetch Hetchy Reservoir, by using other storage facilities that have filled and pursuing new projects to capture the surplus. According to the San Francisco Public Utilities Commission, Hetch Hetchy Reservoir can store as much as 117 billion gallons for the Hetch Hetchy Regional Water System, which serves San Francisco, Santa Clara, Alameda and San Mateo counties. SFPUC said as of this week, the Hetch Hetchy reservoir is at 92 percent capacity. Really appreciate the work you did to build this graph. Check out my **new combined California reservoir and snowpack visualizer** to compare to historical values, as well asthe California precipitation tracker and California snowpack visualizer. So many facets beautifully chartered. 2013, photo, the Hetch Hetchy Reservoir is hazy with smoke . Some want the city to leave more water in stream channels for threatened salmon while others continue a longshot bid to shut down Hetch Hetchy Reservoir in Yosemite altogether and return the area to its natural state. Constitution used to support the arguments to remove the dam was and its snowmelt-fed water supply, water from Hetch Hetchy I dont know if weve seen anything like this in October before.". Share sensitive information only on official, secure websites. Assistant General Manager for Water Steven Ritchie credits the way the system is managed along with lower. Voters rejected a 2012 The advocacy group Restore Hetch Hetchy took its case for Thanks for putting this together. I have wanted to do exactly this plot for years. Due to its high-altitude location at 3,900 feet above sea level Thank you! I also added the ability to select specific reservoirs to display on the graph and share a custom URL which will point those selected reservoirs (click on list button on top right of dashboard). Great visualization Chris! Next feature request: wire in aquifer level data! 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. word for a type of wild grass. Kurtis Alexander is an enterprise reporter for The San Francisco Chronicle, with a focus on natural resources and the environment. . Is that a good thing? thanks. BAWSCA agencies also are implementing water conservation and water recycling projects to help preserve this precious resource for their communities, and are working to identify alternate sources of water supply. Thinking more about it. While the long-term voluntary agreement work continues, the SFPUC does not want to wait to restore the Tuolumne Rivers ecosystem. Francisco Bay Area. I had a class in spillway design many years ago. Congress had to approve the project because it was Last week, I paid a visit to Hetch Hetchy. Waterfalls gushed at Hetch Hetchy after an atmospheric river event in October 2021. Kellie has held many leadership roles for the Asian American Journalists Association, including most recently a board member for the San Francisco chapter. What rates am I paying? Hetch Hetchy is the only reservoir above its average storage of 63%, and is 82% full. . Shasta is very large and could hold about 3.5 cubic kilometers of water at full (but not flood) capacity. I live in the central valley. Ive looked at reservoir sights for years. This local water is captured in reservoirs located in San Mateo and Alameda counties. The judge also noted the provision of the state This is an excellent tool you have put together. Turn right on to Hetch Hetchy Road - Evergreen Road and continue another 7.5 miles to the parking area for Hetchy Hetchy Reservoir next to the dam. hetch hetchy reservoir level percentage Rivers and Streams Streams draining into the Peninsula Watershed within the project area are relatively small, steep, and in a 2021-11-17. How can I match up other monitoring locations similar to the ones on this Interactive Dashboard? The amount stored is increasing, just not by a lot. earthquake. Thanks for the link. No it is correct. Prior to The Chronicle, she worked as a data journalist for Honolulu Civil Beat, a watchdog news organization covering the Hawaiian islands. . I was thinking that it would be interesting to compare inflows and outflows. reloadiframes(); a minimum, according to the San Francisco Public Utilities You can also share a custom URL by clicking the Save URL button which will put the custom URL into the URL bar of your browser which you can then copy and share. Its not possible to see or really interact with the tiniest slivers. Why is it not listed? Lake Shasta, the state's largest reservoir, rose 2.9 feet and added 31,020 acre-feet of water. Additionally, the bounty helps the more than two dozen communities in Alameda, San Mateo and Santa Clara counties that get their water from the city. Local reservoir inflows have negative daily flow rates set to zero. San Francisco's water-bank in Don Pedro Reservoir, downstream on the Tuolumne River, holds twice as much water as Hetch Hetchy. It allowed the water over the spillway to move too fast creating a vacuum between the water and the concrete that pulled the concrete sections out of the spillway. If you look at this chart for Hetch Hetchy, you can see that the biggest and steadiest rise is between March and July, https://waterdata.usgs.gov/monitoring-location/11275500/#parameterCode=00054&period=P365D&compare=true. }, 150); 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. 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. FYI it looks like Isabella is reading incorrectly, likely because its well above 100%. in 2018. This hike follows the shoreline of the reservoir with moderate up and downhill hiking. it will be cool if there is a way to track the change since Dec or some such date. Most local reservoir inflow timeseries are too short to calculate long-term values. globe.height = globe.contentWindow.document.body.scrollHeight+40+"px"; Nate, thanks for the insight. California reservoir levels: . a broad meaning that had been previously applied in an Updated to include drought zones while tracking water shortage status of your area, plus reservoir levels and a list of restrictions for the Bay Areas largest water districts. 1 covering up to $875 million and much of the rest coming from federal loans to water suppliers. My guess would be that the recent systems have been cold and so they are predominantly dropping snow on the watershed. ) or https:// means youve safely connected to the .gov website. "It is unknown how much area of the Feather River and Shasta Lake drainages are impacted by hydrophobic soils.". 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. Although Hetch Hetchy Reservoir is the most well-known, it stores less than 25% of the systems water. Email: kellie.hwang@sfchronicle.com, Yoohyun.Jung@sfchronicle.com Twitter: @KellieHwang, @yoohyun_jung. Save my name, email, and website in this browser for the next time I comment. Located within the boundaries of Yosemite National Park, the reservoir saw a sizable 21.31-foot bump in its water level and gained 36,300 acre-feet, according to Tuesday data from the U.S. Geological Survey. Thanks. Navigation and Navigable Waters 33.208.82 Hetch Hetchy, Cherry Valley, and Don Pedro Dams and Reservoirs. construction in the 1920s, various groups have lobbied to restore This is the first state (of 6 I have lived in) that has had water police and restrictions. https://waterdata.usgs.gov/monitoring-location/11275500/#parameterCode=00054&period=P7D. "In contrast, the Shasta Lake drainage had only a couple of stations in excess of 10 inches whereas most received less. There are no alerts at this time. Read more about the data team and their work. Long-term values for reservoir inflows use maximum number of complete water years in record. and maybe another vertical axis to the right of that with reservoir capacity. Thats up more than 400,000 acre-feet since early December, before the unrelenting series of atmospheric river storms blew through California between Christmas and mid-January. As it is, at first glance, it looks like shasta is at the top because its 28000 instead of 4552. very nice product overall. The remaining 15 percent of water comes from runoff in the Alameda and Peninsula watersheds. Within San Francisco, we manage water distribution in the City. The blue line indicates the reservoirs water level one year ago today. The worst possible scenario is it just remains completely dry. The proportion of blue to brown will show how full it is, while the red line shows the historical level that reservoir is typically at for this date of the water year. Similar findings are described in theUC Davis studyRe-Assembling Hetch HetchyandUS Bureau of Reclamation study. Draining Hetch Hetchy without depriving Bay Area residents of Ill pass it along to friends. Lake ShastaLevel before the storm on Oct. 22: 882.57 feetLevel after the storm on Nov. 1: 885.47 feetTotal rise: 2.9 feet, Storage before the storm: 970,859 acre-feetStorage after the storm: 1,001,879 acre-feetTotal storage increase: 31,020 acre-feet, Lake OrovilleLevel before the storm: 630.80 feetLevel after the storm: 661.20 feetTotal rise: 30.4 feet, Storage before the storm: 799,638 acre-feetStorage after the storm: 982,263 acre-feetTotal storage increase: 182,625 acre-feet, Hetch HetchyLevel before the storm: 3,729.68 feetLevel after the storm: 3,750.99 feetTotal rise: 21.31 feet, Storage before the storm: 221,500 acre-feetStorage after the storm: 257,800 acre-feetTotal storage increase: 36,300 acre-feet, Trinity LakeLevel before the storm: 2,209.55 feetLevel after the storm: 2,213.22 feetTotal rise: 3.67 feet, Storage before the storm: 648,675 acre-feetStorage after the storm: 672,930 acre-feetTotal storage increase: 24,255 acre-feet, Folsom LakeLevel before the storm: 370.28 feetLevel after the storm: 390.33 feetTotal rise: 20.05 feet, Storage before the storm: 214,225 acre-feetStorage after the storm: 318,577 acre-feetTotal storage increase: 104,352 acre-feet, New Melones LakeLevel before the storm: 916.28 feetLevel after the storm: 917.09 feetTotal rise: 0.81 feet, Storage before the storm: 822,619 acre-feetStorage after the storm: 827,786 acre-feetTotal storage increase: 5,167 acre-feet, Don PedroLevel before the storm: 723.96 feetLevel after the storm: 727.41 feetTotal rise: 3.45 feet, Storage before the storm: 970,226 acre-feetStorage after the storm: 995,836 acre-feetTotal storage increase: 25,610 acre-feet, McClureLevel before the storm: 663.70 feetLevel after the storm: 672.27 feetTotal rise: 8.4 feet, Storage before the storm: 180,900 acre-feetStorage after the storm: 198,467 acre-feetTotal storage increase: 17,210 acre-feet. An official website of the United States government. I recently joined the team with Restore Hetch Hetchy as Engagement & Development Director. Just in case a large storm hits, that way they dont reach 100% capacity. The height of the row indicates how much water the reservoir could hold. 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. 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. How do I pay my bill? The water travels through a series of pipelines before it reaches the Bay Area and blends with five local reservoirs. } If you are on a mobile device you can tap the reservoir to get that same info. Californias snowpack slips below average after dismally dry January, renewing concerns about drought, Busting water limits wont cost you in Marin County: Penalties canceled as rain fills reservoirs, California snowpack hits highest level this century for March. His recent work has examined the impacts of drought, threats to public lands and wildlife, and the nation's widening rural-urban divide. since it required flooding a But it has flooded nine miles of a glacier-carved valley and blocks access to the Grand Canyon of the Tuolumne and other nearby areas. You can also use it to monitor only the reservoirs you are most interested in. More about the Tuolumne River Voluntary Agreement can be found athttp://www.tuolumnerivermanagementplan.com. Secure .gov websites use HTTPS I dont think its currently above the historical average, not below 1 year ago. Current conditions of LAKE OR RESERVOIR WATER SURFACE ELEVATION ABOVE NGVD 1929 and RESERVOIR STORAGE are available. Great Job on this site! . Climbers Timmy O'Neill (left) and Lucho Rivera atop a wall overlooking Hetch Hetchy Reservoir. 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. After record snowfall in December was followed by a dry January, there are renewed concerns of drought. It updates hourly using data from the California Department of Water Resources (DWR) website, giving an up-to-date picture of California reservoir levels. Gavin Newsom asked all California residents to voluntarily reduce use by 15% compared with use in 2019. Meant this comment for the integrated snowpack and reservoir view. Flood control agencies (not DWR) have the most say in regard to releases. Steve Ritchie, the San Francisco Public Utilities Commission's assistant general manager for water, said the additional water amounted to roughly 11% of the reservoir's total capacity. rejected by an appellate court and the California Supreme Court Thats just another very strong indication visually that its a big water year.. I noticed that Folsom does not change whereas every reservoir changes on an hourly update. 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. I will take a look and see if there are other important reservoirs missing and may add them in the future. The trail takes you to the base of Wapama Falls, passing two smaller waterfalls (during spring) on the way. They are releasing water into the canals. Omar, Thanks! The SFPUC has also raised concerns over the fishery benefits of the States Plan. This other page: All of this work is nothing short of brilliant. San Franciscos water-bank in Don Pedro Reservoir, downstream on the Tuolumne River, holds twice as much water as Hetch Hetchy. But I would never have imagined how to put all the important information into a single plot. Its water supply Hetch Hetchy Reservoir, in the Sierra Nevada is 80% full, . This dashboard is great! A diverse mix of sources protects us from potential disruptions due to emergencies or natural disasters, provides resiliency during periods of drought, and helps us ensure a long-term, sustainable water supply as we address issues such as climate uncertainty, regulatory changes and population growth. Could you also show each reservoirs level as a function of time? The water transmission system in the Bay Area and Peninsula includes the Bay Division, San Andreas, Sunset Supply, and Crystal Springs pipelines. Copyright Barry Rokeach, 2014. How Much Water is in California Reservoirs? A 1 week change would be interesting to show on each. The 1913 Raker Act authorized the unprecedented dam inside the park and also set the fee that the city pays to rent the entire valley in which the dam sits: $30,000 per year. Water data back to 1930 are available online. 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. Arg. currently, there is a lot more water coming in than going out. If a reservoir gets filled to 100% and more, the dam will break and many cities will get flooded, so the operators are careful. Amy Graff is the news editor for SFGATE. Should be fixed at some point. The water system, which includes the landmark Hetch Hetchy Reservoir, is expected to fill this winter, for the first time since 2019, with nearly 1.5 million acre-feet of water. How do I contact support? Central Valleyfarms have installed enough drip irrigationstrips to reach the moon and back, an improvement that also enables more efficient application of fertilizer and pesticides. The Hetch Hetchy Reservoir that supplies San Francisco, seen here in February, is among those that have refilled after two months of storms. Privacy Policy | 2011-2021 San Francisco Public Utilities Commission. Hetch Hetchy Regional Water System, which serves San Francisco, I would turn this graph, 90 counterclockwise, and start the capacity along the bottom axis from left to right, with the biggest reservoirs on the left and the smaller ones on the right. Lake Oroville. 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. The extensive amount of storage, which is designed to benefit the Bay Area as droughts become more severe with climate change, has become a sticking point in a longstanding environmental battle over how much water the city should be taking from rivers. setTimeout(function (){ Born in Seoul, Yoohyun began her career in Arizona, where she worked for two of the state's largest newspapers covering various beats, including criminal justice and education. 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. I find myself coming back to this every few days to check on our water . Great stuff. Shasta, Oroville, Hetch Hetchy and many others were built by damming large rivers. Data have been checked by the reporting agency. by the Raker Act. Only modest new supplies would be required in the driest years. One acre-foot is the equivalent of one acre of land covered in one foot of water. She is also an alumna of Reveal from the Center for Investigative Reporting Investigative Fellowship and The New York Times Student Journalism Institute. All rights reserved. ", The difference in soil type in the two watersheds was likely another factor. The gain came after weather gauges in the area recorded more than 5 inches from one storm. however, Ill update the code to include it soon. Santa Clara, Alameda and San Mateo counties. Current conditions of LAKE OR RESERVOIR WATER SURFACE ELEVATION ABOVE NGVD 1929 and RESERVOIR STORAGE are available. Love this. But Sites would be what's called an off-channel . Heres where California reservoir levels stand after this weeks rains. 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. San Francisco maintained the phrase only Theyve also seen drought surcharges on their water bills. For most of the year it will still be possible to divert the flow of the Tuolumne River into the pipeline just downstream of the National Park boundary. This site is a great tool, especially as we try to climb out of these drought years. The OShaughnessy Dam i s 300 feet tall only medium-sized by todays standards. And more work is underway. not passed until 1928 five years after the dam was built. City officials have touted their efforts to help salmon, for example by timing water releases to assist with migration and restoring breeding grounds. How Fast Are California Reservoirs Filling Up? Locked padlock If you are experiencing a water, power, or sewer emergency or service problem call our 24-hour hotline at 3-1-1 or (415) 701-2311 from outside SF or log on at, Public Notices and Public Meeting Notices, Customer Assistance Program - Water/Wastewater, Customer Assistance Program - Hetch Hetchy Power, Hetch Hetchy Power Medical Necessity Assitance Program, Hot Water Recirculation Pump Rebate Program, San Francisco's Urban Watersheds Overview, Free Phone Consultations, Evaluations and Devices, Games Puzzles Virtual Backgrounds Overview, Get your Free 2023 Pollution Prevention Calendar, Construction & Contracts Overview Overview, Contract Opportunities and Payments Overview, Project Review and Land Use - Hetch Hetchy Water and Power, Project Review and Land Use - San Francisco, Sewer System Improvement Program Overview, Water Infrastructure Improvements Overview, Boards, Commissions and Committees Overview, Internships, Apprenticeships and Youth Employment, Public Notices and Public Meeting Notices Overview, Audited Financial Statements & Annual Comprehensive Financial Reports, SFPUC Preliminary Public Power Options Report, Civic Center Sustainable Utilities District Plan, Resolution Condemning Systemic Racism & Taking Action to Promote Racial Justice. "It was a very healthy shot in the arm. Didnt realize how bad things were there. 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. The soaking was welcome in a drought-plagued state with a diminishing water supply. The only improvement I would ask you to consider is to allow the Y-axis to be Linear or Log, the latter allowing us to see all the small reservoirs quite easily. Only improvement I would suggest is an improvement of the display of the smaller reservoirs so the names are readable. This chart only shows reservoirs filled via natural flow/rainfall. Ive been meaning to search for aquifer levels. Commission. It could be the 180% of historical average of snowpack, which will be melting in a couple months. They also built a spillway that was too steep and did not install energy dissipators along the spillway. Maybe just acre/ft with ^ or down arrow. Each row represents one reservoir, with bars showing how much of the reservoir is filled (blue) and unfilled (brown). //this function is called from the javascript from within the iframe after the contents of iframe are loaded (and after an additional 150ms delay) Hetch Hetchy is Monitoring location 11275500. How come the totals disagree with the cal map graphic? I like the comparisons of last year, and the historical average. In the year prior to Oroville reaching capacity the interactive chart showed the rate of inflow over time. Current conditions of LAKE OR RESERVOIR WATER SURFACE ELEVATION ABOVE NGVD 1929 and RESERVOIR STORAGE are available. Trailhead coordinates: 37.946905, -119.787376 (37 56 48.85N 119 47 14.55W) their water supply would cost hundreds of millions of dollars at A wet December produced ample snowfall, which is still sitting at high elevations. Generation at the Kirkwood power plant would depend on the natural flow of the Tuolumne River, and would be significantly diminished during late summer and fall. Hours: Year-round, but only accessible by car when the Hetch Hetchy Road is open. Units are in kaf, thousands of acre feet. The dam and reservoir are the source for the Hetch Hetchy Aqueduct, which provides water for over . The recent spate of storms lifted the statewide snowpack to 190% of average for the start of the month, and more snow is on the way. Current and Historical Visualization, https://cdec.water.ca.gov/dynamicapp/QueryDaily?s=HTH, https://cdec.water.ca.gov/dynamicapp/QueryDaily?s=SHA, https://engaging-data.com/ca-reservoir-level/, https://cdec.water.ca.gov/reportapp/javareports?name=RES, Visualizing Californias Water Storage Reservoirs and Snowpack, Interactive California Reservoir Levels Dashboard.
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