The water transmission system in the Bay Area and Peninsula includes the Bay Division, San Andreas, Sunset Supply, and Crystal Springs pipelines. Voters rejected a 2012 The amount stored is increasing, just not by a lot. San Francisco voters have demonstrated their opposition to This was helpful to project seasonal trends & storm impacts. 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. Copyright 2023Water Education Foundation. San Franciscos Hetch Hetchy water system is almost full for the first time in years. 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. I recently joined the team with Restore Hetch Hetchy as Engagement & Development Director. I appreciate the information you are providing. the Hetch Hetchy Valley to its natural state. However, I am interested in how much we are saving. That said, most of its outflow makes its way down Feather River (via Rock Creek Reservoir) and ultimately into Orville. The trail includes spectacular views of Tueeulala and Wapama Falls. Water data back to 1956 are available online. In 2016, a Tuolumne County Superior Court judge dismissed the Email: kalexander@sfchronicle.com Twitter: @kurtisalexander. California reservoir levels: . Francisco Bay Area. Getting There. McClintock bill proposes to improve public access at Hetch Hetchy. The question was, what constitutes unreasonable method of Owned by the city of San Francisco, Hetch Hetchy Reservoir supplies water to the San Francisco Bay Area. Click here for the SFPUC's 2020State of the Regional Water System Report. proposition that would have funded an $8 million study on how 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 overall storage is said to have dropped by 57.4 to 56.4 (or 302 kaf). Even with the latest precipitation, Folsoms values was unchanged. the city wastes water, so it was a moot issue. 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). Ive looked at reservoir sights for years. But they'll cost you, Fight at high school basketball game in S.F. Together, the BAWSCA agencies account for two-thirds of water consumption from the system and pay for two-thirds of its upkeep. Kellie Hwang is the newsletter editor for The San Francisco Chronicle. 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. BAWSCA Board of Directors Meeting, March 16, 2023, 6:30 PM. 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. Call 209-372-0200 for the latest road and weather conditions, Hetch Hetchy Road Daily Hours: 8 am to 5 pm BAWSCA agencies advocated for the capital improvement program that was adopted by the SFPUC in 2002, and are actively monitoring its implementation. Los Angeles,Orange CountyandSan Josehave developed ambitious water recycling programs and have vastly improved local groundwater management. earthquake. finding an alternative water and power source (Hetchy Hetchy also To reach Hetch Hetchy, you have to exit Yosemite National Park and re-enter it. Forty-six percent . Charts from the California Department of Water Resources show conditions at key state reservoirs on Oct. 22 (left) and on Nov. 2 (right). I do not see Diamond Valley Lake Resevoir on this page. I hear from the farmers that we waste 80% of the water by flushing it into the ocean. I also hear the environmentalists say, the streams and wildlife need water, so flush it into the ocean. Its an interesting dilemma. "Some weather monitoring stations in the Feather River drainage received as much as 12 to 19 inches during the period of the storms," the department said. James Q. Martin / Restore Hetch Hetchy Show More Show Less 4 of 7 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. mandate within Water data back to 1956 are available online. The area around Shasta has more volcanic soils that absorb rainfall than the Feather River drainage. Having it here would be great! For the first week of February, there was a slight increase for most reservoirs from January amounts. P.S. I love this this site too. their water supply would cost hundreds of millions of dollars at Jeff, the average changes daily as well. Email: kellie.hwang@sfchronicle.com, Yoohyun.Jung@sfchronicle.com Twitter: @KellieHwang, @yoohyun_jung. If you look at the inflow data on the major reservoirs, its pretty flat. The San Francisco Public Utilities Commission is involved in on-going negotiations with the State on a voluntary agreement for implementation of the Bay-Delta Plan, which calls for large increases in water releases on the tributaries to the San Joaquin River, a major tributary to the Bay-Delta. Excellent graphic! The Mokolumne River, which originates in the high Sierra, provides more than 90 percent of the East Bay's water and the Owens Valley in the eastern Sierra serves as a key source of water for Los Angeles. Flood control agencies (not DWR) have the most say in regard to releases. This website along with another shows that Eastmans level is still rising even though we have not had rain in more than a week. . Find out more about the system at http://www.sfwater.org, BAWSCA Board Policy Committee Meeting, April 12, 2023 1:30pm. Stay up-to-date with breaking news and upcoming events. United States. Lock Therefore flood control agencies take the more conservative route and order the release of water. Heres where California reservoir levels stand after this weeks rains. Didnt realize how bad things were there. 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. Great graphs and very useful. Best of luck out there in California! Thats enough to supply the citys service area for perhaps seven years. 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. Hetch Hetchy is only one of nine reservoirs in the San Francisco Public Utility Commission's water system. I have to agree with many people here what a great job making such a clear graph of whats happening. Local reservoir inflows have negative daily flow rates set to zero. Hetch Hetchy is Monitoring location 11275500. Could you also do the same for the Colorado River reservoirs to see how they are fairing? Folsom is like an overflow tank. 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. 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. System for more than 60 percent of their drinking water. 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). Its currently listed on this page as 29kaf full, but the usgs.gov page below says Hetch Hetchy is at 299.7kaf full. 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 soaking was welcome in a drought-plagued state with a diminishing water supply. This is a very clear graph and I cannot imagine the hours you have put in while setting it up and doing the maintenance. For the higher elevations, more of their water comes directly from snowmelt. The average for this time of year is approximately 4,659.57ft, plus or minus 39ft. For perspective, water demand across the SFPUC's service area of 2.7 million people was about 205,000 acre-feet last fiscal year. Quite an eye opener. These graphs will always read low because they represent the percentage of the seasonal average at some point before the end of the season. 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. Usually with warm ARs, you get a dramatic increase in inflow, which can fill even very large reservoirs relatively quickly, like Oroville in 2017. administration attempted to allocate funds to study removing the "In contrast, the Shasta Lake drainage had only a couple of stations in excess of 10 inches whereas most received less. The height of the row indicates how much water the reservoir could hold. Waterfalls gushed at Hetch Hetchy after an atmospheric river event in October 2021. reservoir violates the California Constitution specifically the The surplus has renewed concerns about San Francisco stockpiling water at the expense of rivers and the fish and wildlife that live there. Its great seeing all the reservoirs in California at or near historical averages. 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. River. California snowpack hits highest level this century for March. The gain came after weather gauges in the area recorded more than 5 inches from one storm. Echoing the sentiments of famed naturalist John Muir, members say the glacially-carved Hetch Hetchy Valley that the reservoir sits in is comparable in grandeur to Yosemite Valley and should not be flooded. Thanks for developing it, and for sharing it with the rest of us! Good info to know. They are releasing water into the canals. Your email address will not be published. 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. over the past few days. San Franciscos water-bank in Don Pedro Reservoir, downstream on the Tuolumne River, holds twice as much water as Hetch Hetchy. While it may seem that Decembers production could get us through the rest of the season, Rizzardo explains that in hydrology, you need consistent water shed to keep soils happy. He fears that without more precipitation this season, well enter our third very dry year. Have you looked into that side of the water management equation? Hetch Hetchy is the only reservoir above its average storage of 63%, and is 82% full. 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. Restore Hetch Hetchy intends to undo this Great American mistake, and return the valley to Yosemite National Park and all people. Here's what that means. The reservoir is now projected to cost $4.4 billion, with Prop. 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. Our flagship blog features analysis of news from our staff and announcements of upcoming events. This is an excellent tool you have put together. So its volume is counted as Orville inflow. Absolutely zero reason to be releasing this much water from these reservoirs. Current as of October 03, 2022 | Updated by . Hetchy refers to a valley in the Sierra Nevada and a reservoir that drained by the Tuolumne In the year prior to Oroville reaching capacity the interactive chart showed the rate of inflow over time. 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. The citys water system also includes a water bank at Don Pedro Reservoir along the Tuolumne River, which was full as of Feb. 1. Historical average is near unattainable these days. Francisco Public Utilities Commissions 26 wholesale customers Occasionally the source water will shift to local reservoirs during routine maintenance to the conveyance system. Current conditions of LAKE OR RESERVOIR WATER SURFACE ELEVATION ABOVE NGVD 1929 and RESERVOIR STORAGE are available. You can email her at agraff@sfgate.com. Hetch Hetchy Reservoir in Yosemite was 69 percent full on Tuesday, 150 percent of normal for this time of year. If we reach 100% after the current rains and then it stops raining for the season, then our percentage will start going down. globe.height = globe.contentWindow.document.body.scrollHeight+40+"px"; Major snowstorm might leave you stranded, New 101 express lanes opens in Bay Area. A separate vote would have been https://waterdata.usgs.gov/monitoring-location/11275500/#parameterCode=00054&period=P7D. This local water is captured in reservoirs located in San Mateo and Alameda counties. I dont know if weve seen anything like this in October before.". As of Feb. 1, the systems total water storage was just over 1.3 million acre-feet, or about 92% of capacity. Begin at O'Shaughnessy Dam. I would like to make one small suggestion:. 7 days 30 days At the moment, I am not interested in the debate. Our reservoirs were alarmingly low. Theyve also seen drought surcharges on their water bills. This local water is captured in reservoirs located in San Mateo and Alameda counties. How Fast Are California Reservoirs Filling Up? }, false); Lake Tahoe really isnt part of California water, as the outflow goes to Nevada. Assistant General Manager for Water Steven Ritchie credits the way the system is managed along with lower. the map graph doesnt include berryessa. All rights reserved. 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. in 2018. Major snowstorm might leave you stranded, New 101 express lanes opens in Bay Area. From the main road, it's about a 20- to 25-minute drive to the parking area. By a large measure, damming and flooding Hetch Hetchy is the most significant damage ever allowed in any of our national parks. It was the only tool that I could find that would allow me to make a vertical marimekko graph. Remember, much of the state is still in a drought and so the prudence is warranted.. Water data back to 1930 are available online. by the Raker Act. Kurtis Alexander is an enterprise reporter for The San Francisco Chronicle, with a focus on natural resources and the environment. "It is unknown how much area of the Feather River and Shasta Lake drainages are impacted by hydrophobic soils.". 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. 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? Share sensitive information only on official, secure websites. mobilewarn(); It looks like the red and blue lines are backwards on Folsom. Your email address will not be published. Why isnt Lake Sonoma included? And early forecasts show the rest of the wet season is not likely to produce enough precipitation. Thanks. 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. Its water supply Hetch Hetchy Reservoir, in the Sierra Nevada is 80% full, . 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). The BAWSCA agencies are therefore key stakeholders in ensuring the system serves as a reliable source of high quality water. She has been with SFGATE for more than 10 years. The SFPUC has also raised concerns over the fishery benefits of the States Plan. FYI it looks like Isabella is reading incorrectly, likely because its well above 100%. Thank you for a beautiful job. The half-hour drive to Hetch Hetchy from CA Highway 120 begins outside the park boundaries. Wonderful site. The advocacy group Restore Hetch Hetchy took its case for Department of Water Resources is just another in a long line of completely mismanaged California entities. I am new to the state. Thanks. But I would never have imagined how to put all the important information into a single plot. I havent spent much time looking at it but that data is on the CDEC website. Share sensitive information only on official, secure websites. DWR is one of many local, State and Federal entities that dictate water releases. Just trying to learn here Thanks so much! Hetch Hetchy is only one of nine reservoirs in the San Francisco Public Utility Commissions water system. Current conditions of LAKE OR RESERVOIR WATER SURFACE ELEVATION ABOVE NGVD 1929 and RESERVOIR STORAGE are available. 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. Data have been checked by the reporting agency. Really appreciate the work you did to build this graph. California Reservoir Levels - Dashboard and visualization showing current water levels in California reservoirs . 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). It was at 60 percent as of March 1 and rising, according to the Bureau of Reclamation. 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. The middle portion of the watershed from New Don Pedro Reservoir to above Hetch Hetchy Reservoir is characterized by deep canyons and forested terrain. California drought: Charts show where reservoir levels stand after a dry January, Track water shortages and restrictions across Bay Area. 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. The water travels through a series of pipelines before it reaches the Bay Area and blends with five local reservoirs. dam and restoring the valley. generates electricity for the city). How do I pay my bill? Save my name, email, and website in this browser for the next time I comment. It does not meet the California definition of renewable energy. Tracy Barbutes, Freelance / Special to The Chronicle, Heres where California reservoir levels stand after this weeks rains. Winter weather conditions may cause road closures. The valley is Hetch Hetchy water travels 160 miles via gravity from Yosemite to the San Francisco Bay Area. Secure .gov websites use HTTPS best to drain the valley. What happened to the Hetch Hetchy level? The Hetch Hetchy Reservoir in Yosemite delivers water to 2.6 million Bay Area residents every day. 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. 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. 2151 River Plaza Drive, Suite 205
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