This is wonderful information. A .gov website belongs to an official government organization in the The data on water storage comes from the California Department of Water Resources (DWR) Data Exchange Center. 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. This November, a group of environmental advocates will put forth a ballot measure that would require the San Francisco Public Utilities Commission to develop a plan to drain Hetch Hetchy. their water supply would cost hundreds of millions of dollars at Upcountry and the Bay Area. Hetch-Hetchy predicted to fill by end of the snowmelt period 2020-2021 Winter season continues to be dry 2019-2020 was dry, although key differences Feb. 2020 was unusually warm, which impacted snowfall levels and water demands; Feb 2021 was cooler, and hence snowfall level higher and water use lower A question: the Historical Avg*, is it the value of year-today or natural year? The gain came after weather gauges in the area recorded more than 5 inches from one storm. Greetings from Mount Laurel New Jersey. 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. I love this this site too. The overall storage is said to have dropped by 57.4 to 56.4 (or 302 kaf). draining the reservoir to court, arguing in 2015 that the Santa Clara, Alameda and San Mateo counties. do so. 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? Its essential to understand that the dispute over San Franciscos use of Hetch Hetchy is not about the use of water only how it is stored. He frequently writes about water, wildfire, climate and the American West. Is it because the laws have changed on how much each reservoir can hold or is it in anticipation of significantly more rain? Absolutely zero reason to be releasing this much water from these reservoirs. It used to be full (and beyond). use must be reasonable.. 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. February 21, 2023 - BAWSCA Statement on State Water Resources Control Board'sSchedule for Consideration of a Voluntary Agreement for the Tuolumne River. Data and Tools San Francisco and the thousands of suburban . But I would never have imagined how to put all the important information into a single plot. At times, nearly 90% of the flow of the Tuolumne River is piped off by the SFPUC and other water agencies in the region. required on whether to demolish OShaughnessy Dam. There are many very small reservoirs (relative to Shasta) so the bars will be very thin to the point where they are barely a sliver or may not even show up. March 12 - The Perks of California Native Wildflowers, March 28 - Rainwater Harvesting and Rain Gardens, April 01 - Lawn Conversion to Native and Drought-Tolerant Plants. Locked padlock If we reach 100% after the current rains and then it stops raining for the season, then our percentage will start going down. Awesome work!! . environmental context. This website along with another shows that Eastmans level is still rising even though we have not had rain in more than a week. However, I am interested in how much we are saving. The problem is that we have no idea of knowing ahead of time what kind of storms well have and how long theyll last, but the reservoir operators have to be super careful and extra cautious, so they periodically let the water flow out. It does not meet the California definition of renewable energy. Forty-six percent . I dont think its currently above the historical average, not below 1 year ago. 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. How can I match up other monitoring locations similar to the ones on this Interactive Dashboard? Its great seeing all the reservoirs in California at or near historical averages. Much of the recent inflow was to Hetch Hetchy, which can hold. Francisco Public Utilities Commissions 26 wholesale customers More about the Tuolumne River Voluntary Agreement can be found athttp://www.tuolumnerivermanagementplan.com. Water data back to 1956 are available online. 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. Maybe just acre/ft with ^ or down arrow. It looks like the red and blue lines are backwards on Folsom. 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. California drought: Charts show where reservoir levels stand after a dry January, Track water shortages and restrictions across Bay Area. Monitoring location 11275500 is associated with a LAKE, RESERVOIR, IMPOUNDMENT in TUOLUMNE COUNTY, CALIFORNIA. Thanks. We own and operate the Hetch Hetchy Regional Water System which serves 2.7 million customers. a broad meaning that had been previously applied in an Official websites use .gov Thanks. rejected by an appellate court and the California Supreme Court The construction of the Hetch Hetchy Railroad took place from 1915 to 1918. I havent spent much time looking at it but that data is on the CDEC website. Copyright 2023Water Education Foundation. Another not monitored by the State? This other page: Local reservoir inflows have negative daily flow rates set to zero. These graphs will always read low because they represent the percentage of the seasonal average at some point before the end of the season. Top ways to experience Hetch Hetchy Reservoir and nearby attractions Yosemite: Audio Driving Tour 1 Full-day Tours from $9.99 per group (up to 8) Private Yosemite Explorer Package | 3 Days of Adventure 3 Private and Luxury from $750.00 per adult (price varies by group size) Private Family Photo Day in Yosemite 78 Recommended Full-day Tours from She joined the Chronicle as a data reporter in 2021. . Thanks for the prompt reply! If you are on a computer, you can hover your cursor over a reservoir and the dashboard at the top will provide information about that individual reservoir. 2151 River Plaza Drive, Suite 205 After the reservoirs Im curious why the percentage of capacity has stayed almost flat for the past 6 weeks or so and below historical average. An improvement: Could you include a bar for Last year at this date? The Hetch Hetchy Valley today with the dam seen in the lower right. Its promising, but too early to let our guard down, said Joseph Sweiss, spokesman for the San Francisco Public Utilities Commission, the citys water purveyor, in an email to The Chronicle. Lake Almanor isnt controlled by DWR for flood/supply. And early forecasts show the rest of the wet season is not likely to produce enough precipitation. San Francisco operates three medium-sized hydro-electric power plants in the Tuolumne River watershed Kirkwood, Moccasin, and Holm. That puts it at 84 percent of where it would usually be usually at this time of year. For each of the top 8 reservoirs the storage has increased by a total of 217 kaf, however). The Water Education Foundation is a nonprofit, tax-exempt, All Rights Reserved. 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. Generation at Holm powerhouse below Cherry Lake would be less affected. . Whats going on with the water level at Oroville? Current conditions of LAKE OR RESERVOIR WATER SURFACE ELEVATION ABOVE NGVD 1929 and RESERVOIR STORAGE are available. The SFPUC has also raised concerns over the fishery benefits of the States Plan. earthquake. 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. Before returning to the Bay Area, she held roles as transportation reporter and trending news reporter at the IndyStar in Indianapolis. Then it has the appearance of something filling up, while still providing all the detail. 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 captured water is piped 150 miles to the Bay Area. 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. 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. That cant be right. Current as of October 03, 2022 | Updated by . 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. She is also an alumna of Reveal from the Center for Investigative Reporting Investigative Fellowship and The New York Times Student Journalism Institute. Thats enough to supply the citys service area for perhaps seven years. 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. The regional water system provides water to 2.4 million people in San Francisco, Santa Clara, Alameda and San Mateo counties. The blue line indicates the reservoirs water level one year ago today. Ive been meaning to search for aquifer levels. For perspective, water demand across the SFPUCs service area of 2.7 million people was about 205,000 acre-feet last fiscal year. 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. . Remaining Capacity text in the legend should be brown? An official website of the United States government. Together, the BAWSCA agencies account for two-thirds of water consumption from the system and pay for two-thirds of its upkeep. As it is, at first glance, it looks like shasta is at the top because its 28000 instead of 4552. very nice product overall. Great URL. There is something strange about the data over the last two days (Jan.17 to Jan. 19): I have to agree with many people here what a great job making such a clear graph of whats happening. Nate, thanks for the insight. 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. From the main road, it's about a 20- to 25-minute drive to the parking area. Emissions must be offset by dedicated conservation programs or renewable energy generation such as wind or solar. If you look at the inflow data on the major reservoirs, its pretty flat. I am grateful for all that you have done here to open our eyes to what is happening, what has happened, and even what might be on the horizon. diversion of water? Restore Hetch Hetchy claimed the phrase had Secure .gov websites use HTTPS Read more about the data team and their work. It used to be full (and beyond). Maintaining this variety of sources is an important component of our near and long-term water supply management strategy. Your Privacy Choices (Opt Out of Sale/Targeted Ads). It updates hourly using data from the California Department of Water Resources (DWR) website, giving an up-to-date picture of California reservoir levels. Hetch Hetchy water travels 160 miles via gravity from Yosemite to the San Francisco Bay Area. It carried workers and materials for the dam, as well as tourists, postage and other amenities. Major snowstorm might leave you stranded, New 101 express lanes opens in Bay Area. Meant this comment for the integrated snowpack and reservoir view. ", The difference in soil type in the two watersheds was likely another factor. Although Hetch Hetchy Reservoir is the most well-known, it stores less than 25% of the system's water. in 2018. lawsuit, saying Restore Hetch Hetchys arguments were preempted Hetch Hetchy Regional Water System The Hetch Hetchy watershed, an area located in Yosemite National Park, is the major source of water for all of San Francisco's water needs. Kellie has held many leadership roles for the Asian American Journalists Association, including most recently a board member for the San Francisco chapter. Save my name, email, and website in this browser for the next time I comment. Having it here would be great! 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. 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. Hetch Hetchy is one of nine reserviors in a water system that serves San Francisco and other Bay Area communities. window.addEventListener("orientationchange", function() { Thank you so much for the hard work! 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. Restore Hetch Hetchy supports a power replacement plan that is truly renewable, and will not increase emissions of any pollutants or carbon that causes global warming. Thats a great suggestion and one that would be particularly helpful! You can also use it to monitor only the reservoirs you are most interested in. Python is used to extract the data from this page hourly and wrangle the data in to a clean format. This site is a great tool, especially as we try to climb out of these drought years. 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. Diamond Valley Lake is a man-made storage reservoir for storing imported water only. Hetch Hetchy has generated controversy since it was first Thats just another very strong indication visually that its a big water year.. This is a marimekko (or mekko) graph which may take some time to understand if you arent used to seeing them. The height of the row indicates how much water the reservoir could hold. She was born and raised in the Bay Area and got her start in news at the Daily Californian newspaper at UC Berkeley where she majored in English literature. She was previously an engagement reporter. The amount stored is increasing, just not by a lot. During late summer and early fall, it will be necessary to move stored supplies from Cherry or Don Pedro Reservoirs into the pipeline. But Sites would be what's called an off-channel . 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, May 24, 2022 - BAWSCA Statement About the Adoption of a Systemwide Water Use Reduction of 11%. 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. So many facets beautifully chartered. Flood control agencies (not DWR) have the most say in regard to releases. This would allow us to see important, but noise-level reservoirs like hetch hetchy. Even with the latest precipitation, Folsoms values was unchanged. "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. I like the comparisons of last year, and the historical average. So on Jan 10 were at 82% of the average for Jan 10. How do I pay my bill? The judge also noted the provision of the state Draining Hetch Hetchy without depriving Bay Area residents of Weve been at zero now for several weeks, and we really want to see that turn around., Kellie Hwang and Yoohyun Jung are San Francisco Chronicle staff writers. best to drain the valley. Hetch Hetchy is only one of nine reservoirs in the San Francisco Public Utility Commissions water system. Required fields are marked *. GNSS2 - Level 2 Quality Survey Grade Global Navigation Satellite System. McClintock bill proposes to improve public access at Hetch Hetchy. For perspective, water demand across the SFPUC's service area of 2.7 million people was about 205,000 acre-feet last fiscal year. Click here for the SFPUC's 2020State of the Regional Water System Report. Are they releasing water to relieve the pressure in anticipation of more water? The half-hour drive to Hetch Hetchy from CA Highway 120 begins outside the park boundaries. currently, there is a lot more water coming in than going out. Its supposed to be brown. She has been with SFGATE for more than 10 years. resizeframe(); The Bay Area's main reservoir is up 21 feet. The water travels through a series of pipelines before it reaches the Bay Area and blends with five local reservoirs. The soaking was welcome in a drought-plagued state with a diminishing water supply. I have wanted to do exactly this plot for years. Maybe bad data. dam and restoring the valley. That includes the Tuolumne River, which provides water via Hetch Hetchy Reservoir to Bay Area customers. Navigation and Navigable Waters 33.208.82 Hetch Hetchy, Cherry Valley, and Don Pedro Dams and Reservoirs.
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