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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. An official website of the United States government. 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. Jeff, the average changes daily as well. I dont think its currently above the historical average, not below 1 year ago. 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. If you are on a mobile device you can tap the reservoir to get that same info. I noticed that Folsom does not change whereas every reservoir changes on an hourly update. All rights reserved. Due to its high-altitude location at 3,900 feet above sea level And early forecasts show the rest of the wet season is not likely to produce enough precipitation. Thanks for providing it for public information. Its fluctuating between ~107% and ~20% from one hour to the next (reading 107.6 atm). Congress had to approve the project because it was Begin at O'Shaughnessy Dam. The worst possible scenario is it just remains completely dry. A question: the Historical Avg*, is it the value of year-today or natural year? resizeframe(); Hetch Hetchy is one of nine reserviors in a water system that serves San Francisco and other Bay Area communities. Absolutely zero reason to be releasing this much water from these reservoirs. At the moment, I am not interested in the debate. 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. A .gov website belongs to an official government organization in the Before returning to the Bay Area, she held roles as transportation reporter and trending news reporter at the IndyStar in Indianapolis. San Franciscos Hetch Hetchy water system is almost full for the first time in years. Isabella is filling quite slowly in order to test out the new $500 million spillway. Thank you! The water is delivered by a gravity-based system and aqueduct to Love the dashboard! Love easy to read and understand information. 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. What happened to the Hetch Hetchy level? I live in the central valley. November 10, 2022 - BAWSCA Statement on State Water-Policy Officials, SFPUC, and Districts Sign MOU for Tuolumne River to Help Recover Salmon While Protecting Water Reliability. It could be the 180% of historical average of snowpack, which will be melting in a couple months. 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. California snowpack hits highest level this century for March. Click here for the SFPUC's 2020State of the Regional Water System Report. The SFPUC has also raised concerns over the fishery benefits of the States Plan. Over the summer, Gov. In 2021, the SFPUC and the Modesto and Turlock Irrigation Districts launched a proactive pilot program with the U.S. https://cdec.water.ca.gov/dynamicapp/QueryDaily?s=HTH 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. Hetchy refers to a valley in the Sierra Nevada and a reservoir that Trinity Lake, with a capacity of 2,447,650 acre-feet, had the smallest increase, from 29% in December to 30% in January. 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. For some strange unknown reason, they are not allowing the lake to fill up. While constructed and owned by San Francisco, the water system was in fact planned to benefit the greater San Francisco Bay Area population. The advocacy group Restore Hetch Hetchy took its case for it will be cool if there is a way to track the change since Dec or some such date. Yep. Kellie Hwang is the newsletter editor for The San Francisco Chronicle. Hi, I started by using this page (https://cdec.water.ca.gov/reportapp/javareports?name=RES) to determine which reservoirs to include and for some reason Almanor isnt on the list. After the reservoirs The SFPUC gets the bulk of its water from a network of reservoirs in the central Sierra Nevada that have long altered flows of the Tuolumne River and its tributaries. Your tools are awesome just hurts when you receive bad data at times! BAWSCA agencies advocated for the capital improvement program that was adopted by the SFPUC in 2002, and are actively monitoring its implementation. 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. drained by the Tuolumne 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. I dont know if weve seen anything like this in October before.". The source water from SFPUC is typically from the Hetch Hetchy reservoir located in the Sierra Nevada Mountains. The remaining 15 percent of water comes from runoff in the Alameda and Peninsula watersheds. globe.height = globe.contentWindow.document.body.scrollHeight+40+"px"; Could the reason be that the water from Lake Alma or seems to be used for energy generation, and that there does not seem to be any agricultural or urban use? The Hetch Hetchy Valley today with the dam seen in the lower right. . Heres where California reservoir levels stand after this weeks rains. Maybe bad data. Ive added it to my bookmarks for quick reference. Just trying to learn here Thanks so much! located in a national park and it passed the Raker Act in 1913 to This file photo shows Shasta Lake. How Much Water is in California Reservoirs? currently, there is a lot more water coming in than going out. A lock ( Hetch Hetchy is Monitoring location 11275500. Very nice work. This almost happened with the Orville Dam in 2017. Units are in kaf, thousands of acre feet. That includes the Tuolumne River, which provides water via Hetch Hetchy Reservoir to Bay Area customers. 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. Francisco Public Utilities Commissions 26 wholesale customers Theyve also seen drought surcharges on their water bills. https://waterdata.usgs.gov/monitoring-location/11275500/#parameterCode=00054&period=P7D. Im curious why the percentage of capacity has stayed almost flat for the past 6 weeks or so and below historical average. From the main road, it's about a 20- to 25-minute drive to the parking area. Hetch Hetchy is only one of nine reservoirs in the San Francisco Public Utility Commissions water system. SFPUC said as of this week, the Hetch Hetchy reservoir is at 92 percent capacity. You can also use it to monitor only the reservoirs you are most interested in. So its volume is counted as Orville inflow. Copyright 2023Water Education Foundation. 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%. In fact, thanks to a little snowmelt, water levels were up for all reservoirs from December to January. This is my first year watching the levels, so maybe Im missing something. Amy Graff is the news editor for SFGATE. For the higher elevations, more of their water comes directly from snowmelt. Most local reservoir inflow timeseries are too short to calculate long-term values. I havent spent much time looking at it but that data is on the CDEC website. A wet December produced ample snowfall, which is still sitting at high elevations. The Bay Area transmission system also includes Irvington Tunnel 1 and Tunnel 2, the Bay Tunnel, and the Crystal Springs Bypass Tunnel. Its supposed to be brown. Commission. Official websites use .gov Getting There. The Department of Water Resources, which manages the state's water supply, said in a statement that there are several possible reasons for the difference in inflow amounts between the two reservoirs. 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. ", The difference in soil type in the two watersheds was likely another factor. Forty-six percent . 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. Yes, and why is Twitchell Dam also not listed? the map graph doesnt include berryessa. Call 209-372-0200 for the latest road and weather conditions, Hetch Hetchy Road Daily Hours: 8 am to 5 pm 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. Generation at Holm powerhouse below Cherry Lake would be less affected. Didnt realize how bad things were there. Maintaining this variety of sources is an important component of our near and long-term water supply management strategy. This system encompasses more than 1,250 miles of distribution pipelines, as well as 12 in-City reservoirs and eight water tanks with a total storage capacity of approximately 413 million gallons. The middle portion of the watershed from New Don Pedro Reservoir to above Hetch Hetchy Reservoir is characterized by deep canyons and forested terrain. Winter weather conditions may cause road closures. Therefore flood control agencies take the more conservative route and order the release of water. Curious why Shasta lake seems to be making big gains in water coming in and Trinity not so much? As it is, at first glance, it looks like shasta is at the top because its 28000 instead of 4552. very nice product overall. One of the big challenges in water management is controling the release. Its currently listed on this page as 29kaf full, but the usgs.gov page below says Hetch Hetchy is at 299.7kaf full. window.addEventListener("orientationchange", function() { Thank you for the time and effort in creating the graphs. 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. Monitoring location 11277500 is associated with a LAKE, RESERVOIR, IMPOUNDMENT in TUOLUMNE COUNTY, CALIFORNIA. The citys water system also includes a water bank at Don Pedro Reservoir along the Tuolumne River, which was full as of Feb. 1. 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. Restore Hetch Hetchy. A small portion of the citys water comes from local reservoirs. 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. Upcountry and the Bay Area. It would be really interesting to visualize whether were able to replenish ground water this year after all the precipitation. Excellent graphic! Restore Hetch Hetchy intends to undo this Great American mistake, and return the valley to Yosemite National Park and all people. Restoring Hetch Hetchy will require some changes in how San Francisco moves and stores water. Reservoir behind OShaughnessy Dam does not require filtration. The name Hetch Hetchy is derived from a Sierra Miwok Thanks for taking the time to do that. The reservoir was at 75 percent capacity as of May 5, totaling 269,963 acre-feet of water (an acre-foot is nearly 326,000 gallons). So included in DWR #S. And while one storm didn't come close to ending the drought, some reservoirs in Northern California, especially those that fell right in the path of the storm, saw significant gains. Then it has the appearance of something filling up, while still providing all the detail. Water data back to 1956 are available online. What rates am I paying? I wonder why it doesnt work for you. and maybe another vertical axis to the right of that with reservoir capacity. 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. Navigation and Navigable Waters 33.208.82 Hetch Hetchy, Cherry Valley, and Don Pedro Dams and Reservoirs. Locked padlock Add a button to convert the row heights to log scale. Emissions must be offset by dedicated conservation programs or renewable energy generation such as wind or solar. DWR is one of many local, State and Federal entities that dictate water releases. Sierra Club unsuccessfully fought the reservoirs establishment I second that request. diversion of water? Restore Hetch Hetchy claimed the phrase had This is a marimekko (or mekko) graph which may take some time to understand if you arent used to seeing them. }, false); Lake Tahoe really isnt part of California water, as the outflow goes to Nevada. While the long-term voluntary agreement work continues, the SFPUC does not want to wait to restore the Tuolumne Rivers ecosystem. 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. The trail includes spectacular views of Tueeulala and Wapama Falls. LK ELEANOR NR HETCH HETCHY CA. Thats enough to supply the citys service area for perhaps seven years. The half-hour drive to Hetch Hetchy from CA Highway 120 begins outside the park boundaries. We own and operate the Hetch Hetchy Regional Water System which serves 2.7 million customers. 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. "It's an increase of a few percent, . Great resource! Could you also do the same for the Colorado River reservoirs to see how they are fairing? I had a class in spillway design many years ago. Current conditions of LAKE OR RESERVOIR WATER SURFACE ELEVATION ABOVE NGVD 1929 and RESERVOIR STORAGE are available. Department of Water Resources is just another in a long line of completely mismanaged California entities. The overall storage is said to have dropped by 57.4 to 56.4 (or 302 kaf). In 2007, the Bush San Francisco voters have demonstrated their opposition to 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. Before joining the Chronicle, Alexander worked as a freelance writer and as a staff reporter for several media organizations, including The Fresno Bee and Bay Area News Group, writing about government, politics and the environment. Francisco Bay Area. Water is rapidly flowing into the state's reservoirs. Kudos to the designers. It was the only tool that I could find that would allow me to make a vertical marimekko graph. The Hetch Hetchy Reservoir that supplies San Francisco, seen here in February, is among those that have refilled after two months of storms. generates electricity for the city). The Bay Area's main reservoir is up 21 feet. Next feature request: wire in aquifer level data! document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); Subscribe to receive email notifications of new content. "In contrast, the Shasta Lake drainage had only a couple of stations in excess of 10 inches whereas most received less. Good info to know. administration attempted to allocate funds to study removing the My guess would be that the recent systems have been cold and so they are predominantly dropping snow on the watershed. the issue, including those under Franklin Delano Roosevelt, word for a type of wild grass. For detailed analysis of how San Franciscos water system will operate without Hetch Hetchy reservoir, see the Environmental Defense Funds studiesParadise RegainedandCherry Intertie Alternative. But I would never have imagined how to put all the important information into a single plot. Shasta, Oroville, Hetch Hetchy and many others were built by damming large rivers. Great stuff. I have wanted to do exactly this plot for years. Current conditions of LAKE OR RESERVOIR WATER SURFACE ELEVATION ABOVE NGVD 1929 and RESERVOIR STORAGE are available. the Bay Area. Hetch Hetchy Water System The system originates more than 100 miles from its primary customers, in Yosemite National Park. environmental context. The windfall of water is welcome news for households and businesses in San Francisco, which use less water on average compared to the rest of the state but nonetheless have faced calls to cut back since 2021 because of water shortages. Is the Stanley Quencher tumbler worth its TikTok hype? Prior to The Chronicle, she worked as a data journalist for Honolulu Civil Beat, a watchdog news organization covering the Hawaiian islands. These sources are diverse in both the origin of the supply snowmelt, rainfall and recharge of groundwater and their location within our system. 7 days 30 days Assistant General Manager for Water Steven Ritchie credits the way the system is managed along with lower. River. 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. 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. Its important to note that other communities in California have taken actions in far greater magnitude than SF to make our waterways more sustainable. It can take several days to see the full impact on reservoirs as water continues to run through watersheds and into streams in the days after a storm. Hetch Hetchy has generated controversy since it was first Quite an eye opener. Visualization was done in javascript and specifically the D3.js visualization library. 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). ) or https:// means youve safely connected to the .gov website. Share sensitive information only on official, secure websites. This website along with another shows that Eastmans level is still rising even though we have not had rain in more than a week. More about the Tuolumne River Voluntary Agreement can be found athttp://www.tuolumnerivermanagementplan.com. How come the totals disagree with the cal map graphic? You can sort the mekko graph by size largest at the top to smallest at the bottom or by reservoir location, from north to south. Thank you for a beautiful job. Email: kalexander@sfchronicle.com Twitter: @kurtisalexander. California drought: Charts show where reservoir levels stand after a dry January, Track water shortages and restrictions across Bay Area. The SFPUC hoards water in dry years when they dont need to, said Peter Drekmeier, policy director at the conservation group Tuolumne River Trust. This is a very clear graph and I cannot imagine the hours you have put in while setting it up and doing the maintenance. YTD values are from January 1 . Thanks for the prompt reply! Eighty-five percent of the water comes from Sierra Nevada snowmelt stored in the Hetch Hetchy reservoir situated on the Tuolumne River in Yosemite National Park. use must be reasonable.. All of this work is nothing short of brilliant. Thank you so much for the hard work! Your email address will not be published. The judge also noted the provision of the state This chart only shows reservoirs filled via natural flow/rainfall. Another not monitored by the State? This is the first state (of 6 I have lived in) that has had water police and restrictions. finding an alternative water and power source (Hetchy Hetchy also 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. It certainly looks dry at least until the last week in February, he said. Even with the latest precipitation, Folsoms values was unchanged. Shasta is very large and could hold about 3.5 cubic kilometers of water at full (but not flood) capacity. Arg. It used to be full (and beyond). dam and restoring the valley. The information on Isabella has been fluctuating drastically (by a factor of 10!) This is an excellent tool you have put together. Wife of missing Bay Area radio host says Jeffrey Vandergrift will not Sen. Dianne Feinstein is hospitalized in San Francisco with shingles, California extends deadline to file 2022 income taxes to match IRS decision, Going to Tahoe this weekend? It looks like the red and blue lines are backwards on Folsom. Lake Almanor isnt controlled by DWR for flood/supply. Really appreciate the work you did to build this graph. For the class we based all our designs on the USACE spillway design manual. This local water is captured in reservoirs located in San Mateo and Alameda counties. The adopted Plan addresses water quality issues affecting the ecosystem and fisheries of the Bay-Delta system. Ive been meaning to search for aquifer levels. Read more about the data team and their work. rejected by an appellate court and the California Supreme Court function reloadiframes(){ Major snowstorm might leave you stranded, New 101 express lanes opens in Bay Area. In Yosemite National Park, the Hetch Hetchy reservoir relies. lawsuit, saying Restore Hetch Hetchys arguments were preempted What period does CA use for Historical Average? It will be very different depending on the period chosen. Ronald Reagan and George W. Bush. a broad meaning that had been previously applied in an Lots of possibilities, just curious. The reservoir is eight miles long and the largest single body of water in Yosemite. This dashboard provides a bit more detail on the state of each of the reservoirs while also showing an aggregate total. 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. One of the most impressive was Hetch Hetchy, which provides drinking water to 2.6 million people in San Francisco and other Bay Area communities. Thanks for putting this together. The valley is Should be fixed at some point. McClintock bill proposes to improve public access at Hetch Hetchy.