The water transmission system in the Bay Area and Peninsula includes the Bay Division, San Andreas, Sunset Supply, and Crystal Springs pipelines. 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. scenic mountain valley in a national park. Californias largest water agencies, in both the urban and agricultural sectors, have invested in ambitious groundwater banking programs inKern County. best to drain the valley. earthquake. Id love to see how much water is being / has been released from these reservoirs. resizeframe(); Call 209-372-0200 for the latest road and weather conditions, Hetch Hetchy Road Daily Hours: 8 am to 5 pm Jeff, the average changes daily as well. Great Job on this site! Thank you! Hoping they start building more reservoirs soon. Your Privacy Choices (Opt Out of Sale/Targeted Ads). But tearing down O'Shaughnessy Dam in order to restore Hetch Hetchy Valley would be a disaster. Francisco Public Utilities Commissions 26 wholesale customers 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. City officials have touted their efforts to help salmon, for example by timing water releases to assist with migration and restoring breeding grounds. Official websites use .gov Related articles . . Ronald Reagan and George W. Bush. 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). Units are in kaf, thousands of acre feet. 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. 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. The current power produced by the SFPUC system, although not carbon-based, is not green since it requires the continued destruction of significant habitat. I think the problem is with the CDEC database (as the LakesOnline website also has had incorrectly high information). Tracy Barbutes, Freelance / Special to The Chronicle, Heres where California reservoir levels stand after this weeks rains. San Francisco operates three medium-sized hydro-electric power plants in the Tuolumne River watershed Kirkwood, Moccasin, and Holm. She is also an alumna of Reveal from the Center for Investigative Reporting Investigative Fellowship and The New York Times Student Journalism Institute. Should be fixed at some point. That includes the Tuolumne River, which provides water via Hetch Hetchy Reservoir to Bay Area customers. 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. BAWSCA Board of Directors Meeting, March 16, 2023, 6:30 PM. California Reservoir Levels - Dashboard and visualization showing current water levels in California reservoirs . For perspective, water demand across the SFPUCs service area of 2.7 million people was about 205,000 acre-feet last fiscal year. An official website of the United States government. This is the best one out there. This site is a great tool, especially as we try to climb out of these drought years. So they should be saving much more and deal with the .000001 of risk later. LK ELEANOR NR HETCH HETCHY CA. And more work is underway. Last week, I paid a visit to Hetch Hetchy. has a graph which shows how the historical avg changes throughout the year (oscillating between ~15000 and ~21000). I like the comparisons of last year, and the historical average. Restoring Hetch Hetchy Valley will allow all three power plants to remain operational but will reduce power generation at these by about 20% an average of about 350 million kWh per year. Great stuff. Locked padlock It was the only tool that I could find that would allow me to make a vertical marimekko graph. reserved. Important Legacy real-time page. For detailed analysis of how San Franciscos water system will operate without Hetch Hetchy reservoir, see the Environmental Defense Funds studiesParadise RegainedandCherry Intertie Alternative. Current conditions of LAKE OR RESERVOIR WATER SURFACE ELEVATION ABOVE NAVD 1988, LAKE OR RESERVOIR WATER SURFACE ELEVATION ABOVE NGVD 1929, and RESERVOIR STORAGE are available. The information on Isabella has been fluctuating drastically (by a factor of 10!) This hike follows the shoreline of the reservoir with moderate up and downhill hiking. 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. Omar, Thanks! Each row represents one reservoir, with bars showing how much of the reservoir is filled (blue) and unfilled (brown). It is also the amount of water in a cube that is 352 feet per side (about the length of a football field). Folsom is like an overflow tank. I appreciate the information you are providing. around the Bay Area rely on the Hetch Hetchy Regional Water Quite an eye opener. lawsuit, saying Restore Hetch Hetchys arguments were preempted Great resource! 2022 All Rights Reserved. I have wanted to do exactly this plot for years. the Bay Area. Lake Mendocino, which has a capacity of 122,400 acre feet, saw the biggest boost from 17% of storage capacity in December to 35% in January. 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. HETCH HETCHY RES A HETCH HETCHY CA. Water is rapidly flowing into the state's reservoirs. February 21, 2023 - BAWSCA Statement on State Water Resources Control Board'sSchedule for Consideration of a Voluntary Agreement for the Tuolumne River. Remaining Capacity text in the legend should be brown? If you look at the inflow data on the major reservoirs, its pretty flat. So many facets beautifully chartered. 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. 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 I find myself coming back to this every few days to check on our water . Twenty of San } The dam and reservoir are the source for the Hetch Hetchy Aqueduct, which provides water for over . Are they releasing water to relieve the pressure in anticipation of more water? Upcountry and the Bay Area. Together, the BAWSCA agencies account for two-thirds of water consumption from the system and pay for two-thirds of its upkeep. Owned by the city of San Francisco, Hetch Hetchy Reservoir Water is such a fascinating topic and Id hate to have to be a water manager making a decision on how much to release to avoid reservoir flooding. You can also use it to monitor only the reservoirs you are most interested in. 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. Absolutely zero reason to be releasing this much water from these reservoirs. The construction of the Hetch Hetchy Railroad took place from 1915 to 1918. Thinking more about it. What happened to the Hetch Hetchy level? 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. Gavin Newsom asked all California residents to voluntarily reduce use by 15% compared with use in 2019. 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. They are draining it currently so that it can serve as that overflow if needed given how much rain is coming down and expected over the next week. 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. This is also affected by most of these dams multi-purpose nature where they are near constantly releasing for power(like Shasta) or to make room for flood control capacity(like Folsom). Awesome work!! I had a class in spillway design many years ago. While the long-term voluntary agreement work continues, the SFPUC does not want to wait to restore the Tuolumne Rivers ecosystem. The OShaughnessy Dam i s 300 feet tall only medium-sized by todays standards. These sources include surface water stored in reservoirs located in the Sierra Nevada, Alameda County and San Mateo County, and groundwater supplies stored in a deep aquifer located in San Francisco and San Mateo counties. Delivering approximately 260 million gallons of water per day, the regional system consists of over 280 miles of pipelines, over 60 miles of tunnels, 11 reservoirs, five pump stations and two water treatment plants. With modest additional investments San Francisco will be able to maintain an uninterrupted supply of high quality Tuolumne River water. 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. and maybe another vertical axis to the right of that with reservoir capacity. Monitoring location 11277500 is associated with a LAKE, RESERVOIR, IMPOUNDMENT in TUOLUMNE COUNTY, CALIFORNIA. It didnt end the drought, but it was definitely really good," said Ritchie. 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). document.getElementById('globes').contentWindow.location.reload(); 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. 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. This almost happened with the Orville Dam in 2017. For example, the average storage level for Feb. 7 is usually 65% of capacity for Trinity Dam, but currently its at 31%. thanks. . Im curious: Lk Almanor is the 8th largest reservoir in CA. http://www.tuolumnerivermanagementplan.com. The amount stored is increasing, just not by a lot. Especially for small ones it is hard to identify them and click on them. Ive looked at reservoir sights for years. }, false); Lake Tahoe really isnt part of California water, as the outflow goes to Nevada. Lake Almanor isnt controlled by DWR for flood/supply. Part of the lake is on the California side, but it has zero California water impact beyond the immediate Tahoe residents. San Francisco maintained the phrase only drained by the Tuolumne Love the dashboard! Kellie has held many leadership roles for the Asian American Journalists Association, including most recently a board member for the San Francisco chapter. Kudos to the designers. 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. diversion of water? Restore Hetch Hetchy claimed the phrase had 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. 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. Lake Oroville. Locked padlock Take CA Highway 120 from the park toward Groveland. "It was a very healthy shot in the arm. One of the big challenges in water management is controling the release. James Q. Martin / Restore Hetch Hetchy Show More Show Less 4 of 7 One gauge in the area has measured 6.12 inches since Oct. 1, which is 899% of normal. It would be really interesting to visualize whether were able to replenish ground water this year after all the precipitation. After record snowfall in December was followed by a dry January, there are renewed concerns of drought. Official websites use .gov All of this work is nothing short of brilliant. Major snowstorm might leave you stranded, New 101 express lanes opens in Bay Area. Restore Hetch Hetchy. A separate vote would have been 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. This is a marimekko (or mekko) graph which may take some time to understand if you arent used to seeing them. San Francisco's water-bank in Don Pedro Reservoir, downstream on the Tuolumne River, holds twice as much water as Hetch Hetchy. "In contrast, the Shasta Lake drainage had only a couple of stations in excess of 10 inches whereas most received less. More about the Tuolumne River Voluntary Agreement can be found athttp://www.tuolumnerivermanagementplan.com. If you are reading this, its probably the winter rainy season in California again, and time to check on the status of the water in the California reservoirs. Commission. The cities, water districts and private utilities represented by the Bay Area Water Supply and Conservation Agency (BAWSCA) rely upon the Hetch Hetchy system for water to protect the health, safety and economic well being of 1.8 million citizens, businesses and community organizations. This chart only shows reservoirs filled via natural flow/rainfall. Id only be interested in the totals from Oroville and Shasta. The worst possible scenario is it just remains completely dry. The remaining 15 percent of water comes from runoff in the Alameda and Peninsula watersheds. 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. 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. But Sites would be what's called an off-channel . I am new to the state. Monitoring location 11275500 is associated with a LAKE, RESERVOIR, IMPOUNDMENT in TUOLUMNE COUNTY, CALIFORNIA. "It's an increase of a few percent, . Here's what that means. Although Hetch Hetchy Reservoir is the most well-known, it stores less than 25% of the systems water. John Muir and the Have you looked into that side of the water management equation? The height of the row indicates how much water the reservoir could hold. Kurtis Alexander is an enterprise reporter for The San Francisco Chronicle, with a focus on natural resources and the environment. According to the SFPUC, the upper reaches of the Tuolumne River have received about 36 inches of rain since the start of the water year in October, almost as much as what the area averages in a year. David Rizzardo, hydrology section manager for the California Department of Water Resources, said there are a lot of factors that affect reservoir storage. } Los Angeles,Orange CountyandSan Josehave developed ambitious water recycling programs and have vastly improved local groundwater management. Shasta is very large and could hold about 3.5 cubic kilometers of water at full (but not flood) capacity. It is on the graph. 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). The average for this time of year is approximately 4,659.57ft, plus or minus 39ft. environmental context. The SFPUC has also raised concerns over the fishery benefits of the States Plan. 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. San Franciscos Hetch Hetchy water system is almost full for the first time in years. globe = document.getElementById('mekko'); reloadiframes(); Really appreciate the work you did to build this graph. required on whether to demolish OShaughnessy Dam. Its not possible to see or really interact with the tiniest slivers. How Much Water is in California Reservoirs? 501(c)3 organization, federal tax ID #942419885. 2151 River Plaza Drive, Suite 205 For example, Hetch Hetchy Reservoir in Yosemite National Park provides 85 percent of San Francisco's total water needs. Water data back to 1930 are available online. 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 certainly looks dry at least until the last week in February, he said. Could you also do the same for the Colorado River reservoirs to see how they are fairing? Only improvement I would suggest is an improvement of the display of the smaller reservoirs so the names are readable. It does not meet the California definition of renewable energy. We provide water directly to customers in San Francisco and wholesale through 26 Water agencies in Alameda, Santa Clara, and San Mateo counties. At the moment, I am not interested in the debate. Nice! Even with all the rain and floods, still a long way to fill them to capacity. But I would never have imagined how to put all the important information into a single plot. In 2021, the SFPUC and the Modesto and Turlock Irrigation Districts launched a proactive pilot program with the U.S. 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. Find out more about the system at http://www.sfwater.org, BAWSCA Board Policy Committee Meeting, April 12, 2023 1:30pm. Why isnt Lake Sonoma included? Restore Hetch Hetchys subsequent appeal to the ruling was Its water supply Hetch Hetchy Reservoir, in the Sierra Nevada is 80% full, . Navigation and Navigable Waters 33.208.82 Hetch Hetchy, Cherry Valley, and Don Pedro Dams and Reservoirs. BAWSCA agencies advocated for the capital improvement program that was adopted by the SFPUC in 2002, and are actively monitoring its implementation. Why is it not listed? United States. proposition that would have funded an $8 million study on how 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. Thats enough to supply the citys service area for perhaps seven years. 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. This is wonderful information. dam and restoring the valley. San Francisco and the thousands of suburban . Usually with warm ARs, you get a dramatic increase in inflow, which can fill even very large reservoirs relatively quickly, like Oroville in 2017. The gain came after weather gauges in the area recorded more than 5 inches from one storm. Shasta is the reservoir with the largest capacity and so it is the tallest row. The remaining 15 percent of water comes from runoff in the Alameda and Peninsula watersheds. 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 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. How come the totals disagree with the cal map graphic? Over the summer, Gov. 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. It has no natural inflow or out flow. 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. 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. The Hetch Hetchy Valley today with the dam seen in the lower right. Lake Mendocino and Lake Berryessa water levels stayed the same. "Soils that have become hydrophobic due to wildfire can also contribute to increased runoff because the water is less able to penetrate the burned soil," the department said. }, 150); While the rainfall has been bad for many people, I am happy to see Californias reservoirs are benefiting slightly, Amen! Previously, Kellie covered dining news and trends, visual arts, events and nightlife for the Arizona Republic, and freelanced for the former Contra Costa Times. Although Hetch Hetchy Reservoir is the most well-known, it stores less than 25% of the system's water. Hetch Hetchy Regional Water System, which serves San Francisco, You dont see runoff right away, the snow is still up there, frozen, doing what we want it to do, he said. https://cdec.water.ca.gov/dynamicapp/QueryDaily?s=SHA In whats known as the Bay-Delta Plan, state water regulators are amid a years-long effort to negotiate a policy for how much water should be kept in rivers that flow to the Sacramento-San Joaquin River Delta to meet the needs of both people and wildlife. Waterfalls gushed at Hetch Hetchy after an atmospheric river event in October 2021. This was helpful to project seasonal trends & storm impacts. Francisco Bay Area. Local reservoir inflows have negative daily flow rates set to zero. Thats a very poor design. 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.
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