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. It updates hourly using data from the California Department of Water Resources (DWR) website, giving an up-to-date picture of California reservoir levels. in 2018. 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. around the Bay Area rely on the Hetch Hetchy Regional Water Then it has the appearance of something filling up, while still providing all the detail. Current conditions of LAKE OR RESERVOIR WATER SURFACE ELEVATION ABOVE NGVD 1929 and RESERVOIR STORAGE are available. 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. document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); Subscribe to receive email notifications of new content. The main goal of this visualization is to provide a quick overview of the status of the main reservoirs in the state and how they compare to historical levels. provides water to 2.7 million residents and businesses in the San Begin at O'Shaughnessy Dam. Current as of October 03, 2022 | Updated by . 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. For perspective, water demand across the SFPUC's service area of 2.7 million people was about 205,000 acre-feet last fiscal year. The citys water system also includes a water bank at Don Pedro Reservoir along the Tuolumne River, which was full as of Feb. 1. Read more about the data team and their work. FYI it looks like Isabella is reading incorrectly, likely because its well above 100%. Shasta is very large and could hold about 3.5 cubic kilometers of water at full (but not flood) capacity. Sometimes this is well done sometimes it is poorly done. The Bay Area transmission system also includes Irvington Tunnel 1 and Tunnel 2, the Bay Tunnel, and the Crystal Springs Bypass Tunnel. Regional Watersheds | SFPUC At the beginning of this water year, which started on October 1, 2022, the state's largest water reservoir, Lake Shasta, was a third full, at 33 percent. For each of the top 8 reservoirs the storage has increased by a total of 217 kaf, however). It was the only tool that I could find that would allow me to make a vertical marimekko graph. 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. 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. 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. Thank you so much for the hard work! Hetch Hetchy System - BAWSCA The Hetch Hetchy Reservoir in Yosemite delivers water to 2.6 million Bay Area residents every day. 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. 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. Thats just another very strong indication visually that its a big water year.. Yes, and why is Twitchell Dam also not listed? Meanwhile, the group Restore Hetch Hetchy is urging the SFPUC to abandon Hetch Hetchy Reservoir. I will take a look and see if there are other important reservoirs missing and may add them in the future. In Yosemite National Park, the Hetch Hetchy reservoir relies. a minimum, according to the San Francisco Public Utilities 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). Share sensitive information only on official, secure websites. She has been with SFGATE for more than 10 years. We provide water directly to customers in San Francisco and wholesale through 26 Water agencies in Alameda, Santa Clara, and San Mateo counties. Yoohyun Jung is the Deputy Data Editor for The San Francisco Chronicle. construction in the 1920s, various groups have lobbied to restore Emissions must be offset by dedicated conservation programs or renewable energy generation such as wind or solar. The SFPUC has also raised concerns over the fishery benefits of the States Plan. All Rights Reserved. SF's Hetch Hetchy water system is almost full. Is that a good thing? The middle portion of the watershed from New Don Pedro Reservoir to above Hetch Hetchy Reservoir is characterized by deep canyons and forested terrain. 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. pertained to water that was wasted, and there was no claim that Kellie has held many leadership roles for the Asian American Journalists Association, including most recently a board member for the San Francisco chapter. Theyve also seen drought surcharges on their water bills. San Francisco voters have demonstrated their opposition to . 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. The valley is Hetch Hetchy water travels 160 miles via gravity from Yosemite to the San Francisco Bay Area. The upcountry portion of the System begins with Hetch Hetchy Reservoir in Yosemite National Park. The remaining 15 percent of water comes from runoff in the Alameda and Peninsula watersheds. Bay Area: Do You Know Where Your Water Comes From? California Reservoir Levels - Dashboard and visualization showing current water levels in California reservoirs . It used to be full (and beyond). function reloadiframes(){ Current conditions of LAKE OR RESERVOIR WATER SURFACE ELEVATION ABOVE NGVD 1929 and RESERVOIR STORAGE are available. Generation at Holm powerhouse below Cherry Lake would be less affected. 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. Secure .gov websites use HTTPS Even with the latest precipitation, Folsoms values was unchanged. Located in the northwest portion of Yosemite National Park, Hetch Greetings from Mount Laurel New Jersey. Even with all the rain and floods, still a long way to fill them to capacity. I previously made a bar graph showing the overall level of water in the major California reservoirs. My guess would be that the recent systems have been cold and so they are predominantly dropping snow on the watershed. I recently joined the team with Restore Hetch Hetchy as Engagement & Development Director. 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. Thanks. San Franciscos Hetch Hetchy water system is almost full for the first time in years. Your email address will not be published. Hetch Hetchy is only one of nine reservoirs in the San Francisco Public Utility Commissions water system. What happened to the Hetch Hetchy level? Amy Graff is the news editor for SFGATE. But tearing down O'Shaughnessy Dam in order to restore Hetch Hetchy Valley would be a disaster. PDF Water Supply Update - California Next feature request: wire in aquifer level data! I dont think its currently above the historical average, not below 1 year ago. Awesome work!! Locked padlock Local reservoir inflows have negative daily flow rates set to zero. Long-term values for reservoir inflows use maximum number of complete water years in record. Its not possible to see or really interact with the tiniest slivers. A Map and Guide to Hetch Hetchy Reservoir at Yosemite - TripSavvy globe = document.getElementById('mekko'); If you are on a mobile device you can tap the reservoir to get that same info. 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 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. Is California's Drought Over? Here's What You Need To Know About Rain In 2016, a Tuolumne County Superior Court judge dismissed the United States. 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. I wonder why it doesnt work for you. document.getElementById('globes').contentWindow.location.reload(); It carried workers and materials for the dam, as well as tourists, postage and other amenities. 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. How Much Water is in California Reservoirs? The snowpack acts as a natural reservoir and slowly releases water.. What happened to the Hetch Hetchy level? A wet December produced ample snowfall, which is still sitting at high elevations. mobilewarn(); The Bay Area's main reservoir is up 21 feet. A 1 week change would be interesting to show on each. Hetch Hetchy is Monitoring location 11275500. A truly excellent project. Restore Hetch Hetchy. That includes the Tuolumne River, which provides water via Hetch Hetchy Reservoir to Bay Area customers. LK ELEANOR NR HETCH HETCHY CA. And the current water storage amounts are well below the historical averages for this time of year. 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. They are releasing water into the canals. Curious why Shasta lake seems to be making big gains in water coming in and Trinity not so much? 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. This is wonderful information. GNSS2 - Level 2 Quality Survey Grade Global Navigation Satellite System. earthquake. San Francisco and the thousands of suburban . In another sign that Californias drought is easing, San Francisco captured more than a years worth of water in just one months time. resizeframe(); If a reservoir gets filled to 100% and more, the dam will break and many cities will get flooded, so the operators are careful. 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). It would be really interesting to visualize whether were able to replenish ground water this year after all the precipitation. maybe label the vertical axis with aggregate total or system total capacity. 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%. 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. Hetch Hetchy gushes over wetlands Institute of the Environment and It was at 60 percent as of March 1 and rising, according to the Bureau of Reclamation. Near the town of La Grange, the river exits the Sierra Nevada foothills and flows through a gently sloping alluvial valley that is incised into Pleistocene alluvial fans. 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. At times, nearly 90% of the flow of the Tuolumne River is piped off by the SFPUC and other water agencies in the region. His recent work has examined the impacts of drought, threats to public lands and wildlife, and the nation's widening rural-urban divide. 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. So they should be saving much more and deal with the .000001 of risk later. The construction of the Hetch Hetchy Railroad took place from 1915 to 1918. In 2007, the Bush She is also an alumna of Reveal from the Center for Investigative Reporting Investigative Fellowship and The New York Times Student Journalism Institute. 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. Hetchy refers to a valley in the Sierra Nevada and a reservoir that Maybe bad data. There is something strange about the data over the last two days (Jan.17 to Jan. 19): Although Hetch Hetchy Reservoir is the most well-known, it stores less than 25% of the system's water. Just trying to learn here Thanks so much! Very nice work. 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. 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. LK ELEANOR NR HETCH HETCHY CA - USGS Water Data for the Nation 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. . Its important to note that other communities in California have taken actions in far greater magnitude than SF to make our waterways more sustainable. 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. How can I match up other monitoring locations similar to the ones on this Interactive Dashboard? Within San Francisco, we manage water distribution in the City. 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? I had a class in spillway design many years ago. Reservoir behind OShaughnessy Dam does not require filtration. UPDATE: Here's where California reservoir levels stand after this week's rains. The SFPUC hoards water in dry years when they dont need to, said Peter Drekmeier, policy director at the conservation group Tuolumne River Trust. 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. Share sensitive information only on official, secure websites. 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. 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. 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. It does not meet the California definition of renewable energy. Navigation and Navigable Waters 33.208.82 Hetch Hetchy, Cherry Valley, and Don Pedro Dams and Reservoirs. Interactive California Reservoir Levels Dashboard - Engaging Data He frequently writes about water, wildfire, climate and the American West. February 21, 2023 - BAWSCA Statement on State Water Resources Control Board'sSchedule for Consideration of a Voluntary Agreement for the Tuolumne River. The soaking was welcome in a drought-plagued state with a diminishing water supply. 501(c)3 organization, federal tax ID #942419885. 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. For the first week of February, there was a slight increase for most reservoirs from January amounts. The BAWSCA agencies are therefore key stakeholders in ensuring the system serves as a reliable source of high quality water. The water travels through a series of pipelines before it reaches the Bay Area and blends with five local reservoirs. The amount stored is increasing, just not by a lot. and maybe another vertical axis to the right of that with reservoir capacity. David Rizzardo, hydrology section manager for the California Department of Water Resources, said there are a lot of factors that affect reservoir storage. 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. After the reservoirs 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. the issue, including those under Franklin Delano Roosevelt, 7 days 30 days Why We Need Hetch Hetchy More Than Ever | SPUR 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. Privacy Policy | 2011-2021 San Francisco Public Utilities Commission. Is that a good thing? River. It could be the 180% of historical average of snowpack, which will be melting in a couple months. Voters rejected a 2012 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. a broad meaning that had been previously applied in an An official website of the United States government. All rights May 24, 2022 - BAWSCA Statement About the Adoption of a Systemwide Water Use Reduction of 11%. For some strange unknown reason, they are not allowing the lake to fill up. "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. California drought: Charts show where reservoir levels stand after a dry January, Track water shortages and restrictions across Bay Area. Best of luck out there in California! 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). 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. 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. Quite an eye opener. Park visitors walk across OShaughnessy Dam in Yosemite National Park on Sept. 1. Are they releasing water to relieve the pressure in anticipation of more water? The name Hetch Hetchy is derived from a Sierra Miwok All of this work is nothing short of brilliant. 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. Trailhead coordinates: 37.946905, -119.787376 (37 56 48.85N 119 47 14.55W) 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. lawsuit, saying Restore Hetch Hetchys arguments were preempted 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. Horoscope for Friday, 3/03/23 by Christopher Renstrom, No seriously, dont drive up to Tahoe this weekend, Wife of Jeffrey Vandergrift issues somber update, Snowboarder dies at Tahoe ski resort following historic blizzard, Scream publicity stunt floods Bay Area dispatch with 911 calls, The best fried chicken is at a San Francisco strip club, Rain reenters Bay Area forecast: Have an umbrella near you, The Warriors broke Russell Westbrook, just like old times, Mochi muffin bakery closes SF cafe after just 4 months, Arrest in killing of woman seen running through Tahoe campground, Oakland ransomware attackers leak 'confidential' data, California Department of Water Resources website, 14 things you need in your car before you drive to Tahoe. Map shows stunning improvement in California drought Different presidential administrations also have tried to address So included in DWR #S. The information on Isabella has been fluctuating drastically (by a factor of 10!) Having it here would be great! 2013, photo, the Hetch Hetchy Reservoir is hazy with smoke . 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. window.addEventListener("orientationchange", function() { Its just small enough that the name doesnt appear as the bar is too thin. 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. Im curious why the percentage of capacity has stayed almost flat for the past 6 weeks or so and below historical average. California drought: 2 reservoirs near Hetch Hetchy tapped - SFGATE Omar, Thanks! 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. California boosts water deliveries to highest level in years, thanks to storms, California reservoir levels: Charts show water supply across the state, Track water shortages and restrictions across Bay Area. "In contrast, the Shasta Lake drainage had only a couple of stations in excess of 10 inches whereas most received less. I notice Briones Reservoir is not on the list. I like the comparisons of last year, and the historical average. It looks like the red and blue lines are backwards on Folsom. 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. Each row represents one reservoir, with bars showing how much of the reservoir is filled (blue) and unfilled (brown). This other page: It takes a fair amount of work to make graphs compared to other more plug-and-play libraries but its very customizable, which is a plus. 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. Article X, Section 2 that requires diversions for all water There doesnt seem to be any site that shows the impact of each storm. CHERRY LK NR HETCH HETCHY CA - USGS Water Data for the Nation 95 percent of. hetch hetchy reservoir level percentage - Examiner 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. System for more than 60 percent of their drinking water. Thanks for the link. 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.