located in a national park and it passed the Raker Act in 1913 to Current conditions of LAKE OR RESERVOIR WATER SURFACE ELEVATION ABOVE NGVD 1929 and RESERVOIR STORAGE are available. You can find the charts below from the California Department of Water Resources website. Restore Hetch Hetchy. One of the big challenges in water management is controling the release. Thank you for a beautiful job. SF's Hetch Hetchy water system is almost full. Is that a good thing? Despite Record Drought, Hetch Hetchy Reservoir Levels At 92 Percent Gavin Newsom asked all California residents to voluntarily reduce use by 15% compared with use in 2019. Find out more about the system at http://www.sfwater.org, BAWSCA Board Policy Committee Meeting, April 12, 2023 1:30pm. The worst possible scenario is it just remains completely dry. 1 covering up to $875 million and much of the rest coming from federal loans to water suppliers. I dont think its currently above the historical average, not below 1 year ago. scenic mountain valley in a national park. In Yosemite National Park, the Hetch Hetchy reservoir relies. The half-hour drive to Hetch Hetchy from CA Highway 120 begins outside the park boundaries. The source water from SFPUC is typically from the Hetch Hetchy reservoir located in the Sierra Nevada Mountains. 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. Next feature request: wire in aquifer level data! the map graph doesnt include berryessa. Thanks for the prompt reply! 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. globe = document.getElementById('mekko'); Long-term values for reservoir inflows use maximum number of complete water years in record. San Franciscos water-bank in Don Pedro Reservoir, downstream on the Tuolumne River, holds twice as much water as Hetch Hetchy. //this function is called from the javascript from within the iframe after the contents of iframe are loaded (and after an additional 150ms delay) The data on water storage comes from the California Department of Water Resources (DWR) Data Exchange Center. Your email address will not be published. Even with all the rain and floods, still a long way to fill them to capacity. Water is rapidly flowing into the state's reservoirs. At times, nearly 90% of the flow of the Tuolumne River is piped off by the SFPUC and other water agencies in the region. Hetch Hetchy is only one of nine reservoirs in the San Francisco Public Utility Commission's water system. Occasionally the source water will shift to local reservoirs during routine maintenance to the conveyance system. Omar, Thanks! 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. Kellie Hwang is the newsletter editor for The San Francisco Chronicle. Since June 2011, the Water Enterprise has operated the Citys Emergency Firefighting Water System (EFWS, formerly known as the Auxiliary Water Supply System (AWSS)), an independent, high-pressure water supply system for fire suppression. Is that a good thing? Units are in kaf, thousands of acre feet. UPDATE: Here's where California reservoir levels stand after this week's rains. lawsuit, saying Restore Hetch Hetchys arguments were preempted The average for this time of year is approximately 4,659.57ft, plus or minus 39ft. 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. 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. The construction of the Hetch Hetchy Railroad took place from 1915 to 1918. Im curious why the percentage of capacity has stayed almost flat for the past 6 weeks or so and below historical average. I love this this site too. More about the Tuolumne River Voluntary Agreement can be found athttp://www.tuolumnerivermanagementplan.com. Thats enough to supply the citys service area for perhaps seven years. around the Bay Area rely on the Hetch Hetchy Regional Water At the height of the recent drought, they still had at least four years in storage. And for the years they were hoarding water, the salmon-based ecosystem suffered.. Restoring Hetch Hetchy will require some changes in how San Francisco moves and stores water. Assistant General Manager for Water Steven Ritchie credits the way the system is managed along with lower. How can I match up other monitoring locations similar to the ones on this Interactive Dashboard? 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. The advocacy group Restore Hetch Hetchy took its case for David Rizzardo, hydrology section manager for the California Department of Water Resources, said there are a lot of factors that affect reservoir storage. They also built a spillway that was too steep and did not install energy dissipators along the spillway. There is something strange about the data over the last two days (Jan.17 to Jan. 19): Interactive California Reservoir Levels Dashboard - Engaging Data This would allow us to see important, but noise-level reservoirs like hetch hetchy. Add a button to convert the row heights to log scale. . Restore Hetch Hetchy intends to undo this Great American mistake, and return the valley to Yosemite National Park and all people. 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. . CHERRY LK NR HETCH HETCHY CA - USGS Water Data for the Nation 2013, photo, the Hetch Hetchy Reservoir is hazy with smoke . Francisco Bay Area. Local reservoir inflows have negative daily flow rates set to zero. Congress had to approve the project because it was The group says the recent plethora of water shows that the city could do without Hetch Hetchy Reservoir, by using other storage facilities that have filled and pursuing new projects to capture the surplus. It wont be full until Spring snowmelt. The surplus has renewed concerns about San Francisco stockpiling water at the expense of rivers and the fish and wildlife that live there. Together, the BAWSCA agencies account for two-thirds of water consumption from the system and pay for two-thirds of its upkeep. Secure .gov websites use HTTPS She joined the Chronicle as a data reporter in 2021. Just trying to learn here Thanks so much! 2151 River Plaza Drive, Suite 205 The Hetch Hetchy Reservoir in Yosemite delivers water to 2.6 million Bay Area residents every day. You can also use it to monitor only the reservoirs you are most interested in. since it required flooding a At the moment, I am not interested in the debate. If you look at the inflow data on the major reservoirs, its pretty flat. 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. Theyve also seen drought surcharges on their water bills. 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. Our drinking water comes from a variety of protected sources carefully managed by the SFPUC. and its snowmelt-fed water supply, water from Hetch Hetchy 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. Locked padlock She was previously an engagement reporter. 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. looks like the CDEC website is the cause of the issue unless it actually dropped 90% in a day: Nate, thanks for the insight. LK ELEANOR NR HETCH HETCHY CA. Arg. The commission plans to decide Nov. 23 whether to formally ask customers to conserve water. It would be really interesting to visualize whether were able to replenish ground water this year after all the precipitation. Shasta, Oroville, Hetch Hetchy and many others were built by damming large rivers. Fish and Wildlife Service that provides an immediate $4 million investment for habitat improvements for fisheries in the Tuolumne River. The soaking was welcome in a drought-plagued state with a diminishing water supply. This website along with another shows that Eastmans level is still rising even though we have not had rain in more than a week. I am new to the state. 2022 All Rights Reserved. The captured water is piped 150 miles to the Bay Area. For each of the top 8 reservoirs the storage has increased by a total of 217 kaf, however). 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. reservoir violates the California Constitution specifically the Eighty-five percent of the water comes from Sierra Nevada snowmelt stored in the Hetch Hetchy reservoir situated on the Tuolumne River in Yosemite National Park. Department of Water Resources is just another in a long line of completely mismanaged California entities. Hetch Hetchy | Hetch Hetchy Dam & Reservoir History | Yosemite.com 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. Forty-six percent . 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. Waterfalls gushed at Hetch Hetchy after an atmospheric river event in October 2021. This was helpful to project seasonal trends & storm impacts. Not only does it supply 85 percent of the water for 2.6 million people in San Francisco, controlled releases via the O'Shaughnessy Dam are helping preserve downstream specieseven in dry . He frequently writes about water, wildfire, climate and the American West. And the current water storage amounts are well below the historical averages for this time of year. BAWSCA agencies also are implementing water conservation and water recycling projects to help preserve this precious resource for their communities, and are working to identify alternate sources of water supply. Lake Almanor isnt controlled by DWR for flood/supply. Why We Need Hetch Hetchy More Than Ever | SPUR To reach Hetch Hetchy, you have to exit Yosemite National Park and re-enter it. With modest additional investments San Francisco will be able to maintain an uninterrupted supply of high quality Tuolumne River water. 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. Due to its high-altitude location at 3,900 feet above sea level I notice Briones Reservoir is not on the list. Much of the recent inflow was to Hetch Hetchy, which can hold. Only improvement I would suggest is an improvement of the display of the smaller reservoirs so the names are readable. Most local reservoir inflow timeseries are too short to calculate long-term values. This local water is captured in reservoirs located in San Mateo and Alameda counties. a broad meaning that had been previously applied in an Great visualization Chris! Sometimes this is well done sometimes it is poorly done. Flood control agencies (not DWR) have the most say in regard to releases. A truly excellent project. So they should be saving much more and deal with the .000001 of risk later. 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. San Franciscos water system, which includes Hetchy Hetchy, is expected to fill this winter for the first time since 2019. Wapama Falls Trail | Yosemite National Park | Hikespeak.com https://cdec.water.ca.gov/dynamicapp/QueryDaily?s=SHA You dont see runoff right away, the snow is still up there, frozen, doing what we want it to do, he said. Thanks. Hours: Year-round, but only accessible by car when the Hetch Hetchy Road is open. Greetings from Mount Laurel New Jersey. 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%. San Francisco operates three medium-sized hydro-electric power plants in the Tuolumne River watershed Kirkwood, Moccasin, and Holm. 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. not passed until 1928 five years after the dam was built. Is that from melting snow and rain water coming from the mountains and filling it up? California drought: 2 reservoirs near Hetch Hetchy tapped - SFGATE Interesting. Thank you! The maximum that the city has put away is 570,000 acre-feet of water. His recent work has examined the impacts of drought, threats to public lands and wildlife, and the nation's widening rural-urban divide. . The reservoir is eight miles long and the largest single body of water in Yosemite. Hetchy refers to a valley in the Sierra Nevada and a reservoir that Save my name, email, and website in this browser for the next time I comment. Trinity Lake, with a capacity of 2,447,650 acre-feet, had the smallest increase, from 29% in December to 30% in January. by the Raker Act. Our reservoirs were alarmingly low. Major snowstorm might leave you stranded, New 101 express lanes opens in Bay Area. SFPUC announces Hetch Hetchy reservoir at less than 65 percent capacity 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. All rights reserved. however, Ill update the code to include it soon. 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. 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). It looks like the red and blue lines are backwards on Folsom. The adopted Plan addresses water quality issues affecting the ecosystem and fisheries of the Bay-Delta system. Could you also do the same for the Colorado River reservoirs to see how they are fairing? While the rainfall has been bad for many people, I am happy to see Californias reservoirs are benefiting slightly, Amen! United States. FYI it looks like Isabella is reading incorrectly, likely because its well above 100%. The trail includes spectacular views of Tueeulala and Wapama Falls. globe.height = globe.contentWindow.document.body.scrollHeight+40+"px"; 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. Didnt realize how bad things were there. Official websites use .gov This other page: https . Kellie has held many leadership roles for the Asian American Journalists Association, including most recently a board member for the San Francisco chapter. Ive looked at reservoir sights for years. pertained to water that was wasted, and there was no claim that 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. provides water to 2.7 million residents and businesses in the San Last week, I paid a visit to Hetch Hetchy. 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. This site is a great tool, especially as we try to climb out of these drought years. It updates hourly using data from the California Department of Water Resources (DWR) website, giving an up-to-date picture of California reservoir levels. Absolutely zero reason to be releasing this much water from these reservoirs. So many facets beautifully chartered. Data have been checked by the reporting agency. 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. Francisco Public Utilities Commissions 26 wholesale customers She has been with SFGATE for more than 10 years. A .gov website belongs to an official government organization in the Instructions: Share sensitive information only on official, secure websites. 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. But Sites would be what's called an off-channel . 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. As of 5pm on 1/18, the data appears correct (~58k acre feet), but an hour ago it was reading off the chart (3X above what they are allowed to store right now). Saved to my favorites now. Ill pass it along to friends. It was at 60 percent as of March 1 and rising, according to the Bureau of Reclamation. It is also the amount of water in a cube that is 352 feet per side (about the length of a football field). System for more than 60 percent of their drinking water. Lock Twenty of San 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. Santa Clara, Alameda and San Mateo counties. This almost happened with the Orville Dam in 2017. 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 OShaughnessy Dam, which was completed in 1938 and is 430-feet tall, impounds water in Hetch Hetchy Reservoir for communities in the Bay Area. Meanwhile, the group Restore Hetch Hetchy is urging the SFPUC to abandon Hetch Hetchy Reservoir. McClintock bill proposes to improve public access at Hetch Hetchy. The information on Isabella has been fluctuating drastically (by a factor of 10!) 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. DWR is one of many local, State and Federal entities that dictate water releases. . Click here for the SFPUC's 2020State of the Regional Water System Report. For perspective, water demand across the SFPUCs service area of 2.7 million people was about 205,000 acre-feet last fiscal year. Ronald Reagan and George W. Bush. If you click on the list button in the top right of the dashboard, it will show a list of the reservoirs (in order of size from largest to smallest) and you can check which ones you would like to display. The snowpack acts as a natural reservoir and slowly releases water.. Reservoir behind OShaughnessy Dam does not require filtration. The trail takes you to the base of Wapama Falls, passing two smaller waterfalls (during spring) on the way. Reservoir levels rising. In 2021, the SFPUC and the Modesto and Turlock Irrigation Districts launched a proactive pilot program with the U.S. document.getElementById('globes').contentWindow.location.reload(); 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. mandate within 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. 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. Commission. Park visitors walk across OShaughnessy Dam in Yosemite National Park on Sept. 1. Maybe just acre/ft with ^ or down arrow. 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. 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. The area around Shasta has more volcanic soils that absorb rainfall than the Feather River drainage. Our flagship blog features analysis of news from our staff and announcements of upcoming events. Kudos to the designers. The Hetch Hetchy Valley today with the dam seen in the lower right. Is California's drought over? Here's what you need to know about rain 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.
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