Also, do they provide inflows and outflows for locations? The state's second-largest reservoir, Lake Oroville in Butte County, saw especially dramatic gains with a 30.4-foot rise in the water level and a 182,625-acre-foot increase in the total amount of water, data posted Tuesday from the California Department of Water Resources showed. 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. Excellent graphic! Restoring Hetch Hetchy will require some changes in how San Francisco moves and stores water. How can I apply to SFPUC? Hi Keith, you could de-select the large reservoirs from the menu at the top right. 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 map graph doesnt include berryessa. 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. 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. Yoohyun Jung is the Deputy Data Editor for The San Francisco Chronicle. 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. 2151 River Plaza Drive, Suite 205 Theyve also seen drought surcharges on their water bills. But the growing water reserves dont please everyone. It used to be full (and beyond). 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. Hetch Hetchy is the only reservoir above its average storage of 63%, and is 82% full. 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. 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. 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. Official websites use .gov Add a button to convert the row heights to log scale. 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. Click here for the SFPUC's 2020State of the Regional Water System Report. HETCH HETCHY RES A HETCH HETCHY CA. ", The difference in soil type in the two watersheds was likely another factor. 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. 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. Shasta is the reservoir with the largest capacity and so it is the tallest row. This other page: https . Draining Hetch Hetchy without depriving Bay Area residents of The amount stored is increasing, just not by a lot. There doesnt seem to be any site that shows the impact of each storm. Interesting. Begin at O'Shaughnessy Dam. 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. 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. With modest additional investments San Francisco will be able to maintain an uninterrupted supply of high quality Tuolumne River water. As the system aged, especially in an era of heightened safety awareness following the Loma Prieta Earthquake in 1989 and drought in the 1990s, it became evident that the system required a complete overhaul. 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. San Franciscos Hetch Hetchy water system is almost full for the first time in years. Hetch Hetchy Water System The system originates more than 100 miles from its primary customers, in Yosemite National Park. This website along with another shows that Eastmans level is still rising even though we have not had rain in more than a week. Our drinking water comes from a variety of protected sources carefully managed by the SFPUC. Hetch Hetchy has generated controversy since it was first 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. a minimum, according to the San Francisco Public Utilities Thanks for providing it for public information. Great visualization Chris! But tearing down O'Shaughnessy Dam in order to restore Hetch Hetchy Valley would be a disaster. 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. thanks. It would be really interesting to visualize whether were able to replenish ground water this year after all the precipitation. How come the totals disagree with the cal map graphic? 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. Thats a very poor design. finding an alternative water and power source (Hetchy Hetchy also Remaining Capacity text in the legend should be brown? The new 68-mile (109 km) railroad wound its way up the narrow canyon of the Tuolumne River past sharp curves and up steep 4% grades. Restore Hetch Hetchys subsequent appeal to the ruling was 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. This file photo shows Shasta Lake. This is a marimekko (or mekko) graph which may take some time to understand if you arent used to seeing them. 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. It didnt end the drought, but it was definitely really good," said Ritchie. If you are on a mobile device you can tap the reservoir to get that same info. Maybe just acre/ft with ^ or down arrow. Other California water agencies have done far more to reduce the impact of their system on Mono Lake, the Trinity and San Joaquin Rivers, and the Bay-Delta. Twenty of San February 21, 2023 - BAWSCA Statement on State Water Resources Control Board'sSchedule for Consideration of a Voluntary Agreement for the Tuolumne River. not passed until 1928 five years after the dam was built. required on whether to demolish OShaughnessy Dam. 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. dam and restoring the valley. So on Jan 10 were at 82% of the average for Jan 10. For example, Hetch Hetchy Reservoir in Yosemite National Park provides 85 percent of San Francisco's total water needs. Francisco Public Utilities Commissions 26 wholesale customers His recent work has examined the impacts of drought, threats to public lands and wildlife, and the nation's widening rural-urban divide. I dont think its currently above the historical average, not below 1 year ago. For the class we based all our designs on the USACE spillway design manual. I see many of the local canals flowing with lots of water. The main reason for the discrepancy, the department said, is that the focus of the atmospheric river was generally between the Golden Gate and Mount Lassen, meaning that the Feather River watershed received much more rainfall than the Shasta Lake drainage area. 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. Ive added it to my bookmarks for quick reference. 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. Another not monitored by the State? 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 live in the central valley. draining the reservoir to court, arguing in 2015 that the 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. drained by the Tuolumne 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. 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. Similar findings are described in theUC Davis studyRe-Assembling Hetch HetchyandUS Bureau of Reclamation study. Assistant General Manager for Water Steven Ritchie credits the way the system is managed along with lower. resizeframe(); The Hetch Hetchy Reservoir in Yosemite National Park can store up to 117 billion gallons of drinking water that is used for the Hetch Hetchy Regional Water System that provides water for 2.6 . Similar to the water supply issues discussed above, the amount of power replacement is small in a statewide context less than of 1% of the renewable power supply being developed this decade alone. 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. This is wonderful information. 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). For perspective, water demand across the SFPUCs service area of 2.7 million people was about 205,000 acre-feet last fiscal year. At times, nearly 90% of the flow of the Tuolumne River is piped off by the SFPUC and other water agencies in the region. Lake Shasta and Mendocino are also well below average. A truly excellent project. For example, the average storage level for Feb. 7 is usually 65% of capacity for Trinity Dam, but currently its at 31%. Flood control agencies (not DWR) have the most say in regard to releases. BAWSCA agencies advocated for the capital improvement program that was adopted by the SFPUC in 2002, and are actively monitoring its implementation. Wonderful site. Its water supply Hetch Hetchy Reservoir, in the Sierra Nevada is 80% full, . Great resource! 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 . Then it has the appearance of something filling up, while still providing all the detail. Its great seeing all the reservoirs in California at or near historical averages. It is on the graph. Just trying to learn here Thanks so much! Lake Almanor isnt controlled by DWR for flood/supply. Is the Stanley Quencher tumbler worth its TikTok hype? proposed as a source of water following the 1906 San Francisco The current power produced by the SFPUC system, although not carbon-based, is not green since it requires the continued destruction of significant habitat. Hetchy Reservoir can store as much as 117 billion gallons for the 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%. Francisco Bay Area. 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. An improvement: Could you include a bar for Last year at this date? One of the big challenges in water management is controling the release. function reloadiframes(){ Hetchy refers to a valley in the Sierra Nevada and a reservoir that How Much Water is in California Reservoirs? Copyright Barry Rokeach, 2014. If we reach 100% after the current rains and then it stops raining for the season, then our percentage will start going down. }, 150); globe.height = globe.contentWindow.document.body.scrollHeight+40+"px"; 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. Californias largest water agencies, in both the urban and agricultural sectors, have invested in ambitious groundwater banking programs inKern County. San Franciscos water system, which includes Hetchy Hetchy, is expected to fill this winter for the first time since 2019. Charts from the California Department of Water Resources show conditions at key state reservoirs on Oct. 22 (left) and on Nov. 2 (right). 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. Nice! From the main road, it's about a 20- to 25-minute drive to the parking area. 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. 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. The upcountry portion of the System begins with Hetch Hetchy Reservoir in Yosemite National Park. This would allow us to see important, but noise-level reservoirs like hetch hetchy. supplies water to the San Francisco Bay Area. Construction of the regional water system proceeded over the following 20 years, with water first delivered in 1934. With how we can now basically pinpoint future precipitation amounts at least a month in advance, no reason to not let these reservoirs fill up past historic averages for this date. Water data back to 1930 are available online. 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. ) or https:// means youve safely connected to the .gov website. 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. Hetch Hetchy is one of nine reserviors in a water system that serves San Francisco and other Bay Area communities. 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. How can I match up other monitoring locations similar to the ones on this Interactive Dashboard? . 2013, photo, the Hetch Hetchy Reservoir is hazy with smoke . Thanks. In 2021, the SFPUC and the Modesto and Turlock Irrigation Districts launched a proactive pilot program with the U.S. Its currently listed on this page as 29kaf full, but the usgs.gov page below says Hetch Hetchy is at 299.7kaf full. Hi, I started by using this page (https://cdec.water.ca.gov/reportapp/javareports?name=RES) to determine which reservoirs to include and for some reason Almanor isnt on the list. looks like the CDEC website is the cause of the issue unless it actually dropped 90% in a day: Getting There. But I would never have imagined how to put all the important information into a single plot. You can also use it to monitor only the reservoirs you are most interested in. and maybe another vertical axis to the right of that with reservoir capacity. May 24, 2022 - BAWSCA Statement About the Adoption of a Systemwide Water Use Reduction of 11%. Article X, Section 2 that requires diversions for all water Are they releasing water to relieve the pressure in anticipation of more water? mobilewarn(); proposition that would have funded an $8 million study on how 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. Arg. The Hetch Hetchy Reservoir in Yosemite delivers water to 2.6 million Bay Area residents every day. 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. They also built a spillway that was too steep and did not install energy dissipators along the spillway. Major snowstorm might leave you stranded, New 101 express lanes opens in Bay Area. P.S. 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. Sierra Club unsuccessfully fought the reservoirs establishment Remember, much of the state is still in a drought and so the prudence is warranted.. Ive looked at reservoir sights for years. Find out more about the system at http://www.sfwater.org, BAWSCA Board Policy Committee Meeting, April 12, 2023 1:30pm. "This was rare for October. Delivery rates are 7-day average values. What rates am I paying? In 2016, a Tuolumne County Superior Court judge dismissed the Lock This was helpful to project seasonal trends & storm impacts. Hetch Hetchy is only one of nine reservoirs in the San Francisco Public Utility Commissions water system. A 1 week change would be interesting to show on each. Great work. } "It is unknown how much area of the Feather River and Shasta Lake drainages are impacted by hydrophobic soils.". The area around Shasta has more volcanic soils that absorb rainfall than the Feather River drainage. "It was a very healthy shot in the arm. But they'll cost you, Fight at high school basketball game in S.F. Constitution used to support the arguments to remove the dam was 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). The snowpack acts as a natural reservoir and slowly releases water.. While the rainfall has been bad for many people, I am happy to see Californias reservoirs are benefiting slightly, Amen! Climbers Timmy O'Neill (left) and Lucho Rivera atop a wall overlooking Hetch Hetchy Reservoir. It was at 60 percent as of March 1 and rising, according to the Bureau of Reclamation. Much of the recent inflow was to Hetch Hetchy, which can hold. Monitoring location 11275500 is associated with a LAKE, RESERVOIR, IMPOUNDMENT in TUOLUMNE COUNTY, CALIFORNIA. YTD values are from January 1 . Thats a great suggestion and one that would be particularly helpful! Maintaining this variety of sources is an important component of our near and long-term water supply management strategy. Saved to my favorites now. 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. Lake Mendocino and Lake Berryessa water levels stayed the same. It was the only tool that I could find that would allow me to make a vertical marimekko graph. 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. Hetch Hetchy water travels 160 miles via gravity from Yosemite to the San Francisco Bay Area. the issue, including those under Franklin Delano Roosevelt, Current as of October 03, 2022 | Updated by . Share sensitive information only on official, secure websites. In another sign that Californias drought is easing, San Francisco captured more than a years worth of water in just one months time. 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. While the long-term voluntary agreement work continues, the SFPUC does not want to wait to restore the Tuolumne Rivers ecosystem. Thanks for the link. Our flagship blog features analysis of news from our staff and announcements of upcoming events. It wont be full until Spring snowmelt. Read more about the data team and their work. It seems likely one of those two readings is wrong. Restore Hetch Hetchy. Greetings from Mount Laurel New Jersey. The Bay Area transmission system also includes Irvington Tunnel 1 and Tunnel 2, the Bay Tunnel, and the Crystal Springs Bypass Tunnel. Jeff, the average changes daily as well. . Required fields are marked *. The Water Education Foundation is a nonprofit, tax-exempt, Omar, Thanks! The middle portion of the watershed from New Don Pedro Reservoir to above Hetch Hetchy Reservoir is characterized by deep canyons and forested terrain. I realize there we dont want to reservoirs overflowing, but why are we still below historical average? While it may seem that Decembers production could get us through the rest of the season, Rizzardo explains that in hydrology, you need consistent water shed to keep soils happy. He fears that without more precipitation this season, well enter our third very dry year. Hetch Hetchy is only one of nine reservoirs in the San Francisco Public Utility Commission's water system. "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. It used to be full (and beyond). The Department of Water Resources, which manages the state's water supply, said in a statement that there are several possible reasons for the difference in inflow amounts between the two reservoirs. Water data back to 1956 are available online. Secure .gov websites use HTTPS diversion of water? Restore Hetch Hetchy claimed the phrase had Before joining the Chronicle, Alexander worked as a freelance writer and as a staff reporter for several media organizations, including The Fresno Bee and Bay Area News Group, writing about government, politics and the environment.
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