hetch hetchy reservoir level percentage

Water storage facilities include watersheds, dams, and reservoirs including: Calaveras, San Antonio, Crystal Springs, Pilarcitos, and San Andreas. the issue, including those under Franklin Delano Roosevelt, City officials have touted their efforts to help salmon, for example by timing water releases to assist with migration and restoring breeding grounds. 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. Especially for small ones it is hard to identify them and click on them. Lots of possibilities, just curious. 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. This was helpful to project seasonal trends & storm impacts. Charts from the California Department of Water Resources show conditions at key state reservoirs on Oct. 22 (left) and on Nov. 2 (right). The Hetch Hetchy Valley today with the dam seen in the lower right. . It was at 60 percent as of March 1 and rising, according to the Bureau of Reclamation. Thanks for putting this together. }, 150); Hetchy refers to a valley in the Sierra Nevada and a reservoir that the Bay Area. 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. 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. It carried workers and materials for the dam, as well as tourists, postage and other amenities. 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. It would be really interesting to visualize whether were able to replenish ground water this year after all the precipitation. San Franciscos Hetch Hetchy water system is almost full for the first time in years. 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. Water data back to 1930 are available online. function reloadiframes(){ Much of the water passing through Holm would be diverted into the Mountain Tunnel and be used to generate power a second time at the Moccasin powerhouse. Californias largest water agencies, in both the urban and agricultural sectors, have invested in ambitious groundwater banking programs inKern County. Thats just another very strong indication visually that its a big water year.. We provide water directly to customers in San Francisco and wholesale through 26 Water agencies in Alameda, Santa Clara, 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. 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 citys water system also includes a water bank at Don Pedro Reservoir along the Tuolumne River, which was full as of Feb. 1. I think the problem is with the CDEC database (as the LakesOnline website also has had incorrectly high information). While constructed and owned by San Francisco, the water system was in fact planned to benefit the greater San Francisco Bay Area population. I love this this site too. United States. Thanks for developing it, and for sharing it with the rest of us! The SFPUC hoards water in dry years when they dont need to, said Peter Drekmeier, policy director at the conservation group Tuolumne River Trust. What period does CA use for Historical Average? It will be very different depending on the period chosen. 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. 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. supplies water to the San Francisco Bay Area. Awesome work!! 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. Assistant General Manager for Water Steven Ritchie credits the way the system is managed along with lower. I previously made a bar graph showing the overall level of water in the major California reservoirs. I would like to make one small suggestion:. By a large measure, damming and flooding Hetch Hetchy is the most significant damage ever allowed in any of our national parks. San Francisco's water-bank in Don Pedro Reservoir, downstream on the Tuolumne River, holds twice as much water as Hetch Hetchy. The average for this time of year is approximately 4,659.57ft, plus or minus 39ft. Just trying to learn here Thanks so much! Love this. Thats a very poor design. Hetch-Hetchy predicted to fill by end of the snowmelt period 2020-2021 Winter season continues to be dry 2019-2020 was dry, although key differences Feb. 2020 was unusually warm, which impacted snowfall levels and water demands; Feb 2021 was cooler, and hence snowfall level higher and water use lower thanks. Emissions must be offset by dedicated conservation programs or renewable energy generation such as wind or solar. Hours: Year-round, but only accessible by car when the Hetch Hetchy Road is open. P.S. Stay up-to-date with breaking news and upcoming events. It does not meet the California definition of renewable energy. mobilewarn(); 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 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 . For detailed analysis of how San Franciscos water system will operate without Hetch Hetchy reservoir, see the Environmental Defense Funds studiesParadise RegainedandCherry Intertie Alternative. a minimum, according to the San Francisco Public Utilities 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. What rates am I paying? Its fluctuating between ~107% and ~20% from one hour to the next (reading 107.6 atm). All rights This is of particular interest as the self-imposed restrictions deadline is approaching and the federal government may have to step in and mandate restrictions across the 7 states, including California. Id love to see how much water is being / has been released from these reservoirs. Heres where California reservoir levels stand after this weeks rains. Current as of October 03, 2022 | Updated by . This site is a great tool, especially as we try to climb out of these drought years. Historical average is near unattainable these days. scenic mountain valley in a national park. http://www.tuolumnerivermanagementplan.com. Article X, Section 2 that requires diversions for all water Major snowstorm might leave you stranded, New 101 express lanes opens in Bay Area. How can I match up other monitoring locations similar to the ones on this Interactive Dashboard? 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. 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. To reach Hetch Hetchy, you have to exit Yosemite National Park and re-enter it. But I would never have imagined how to put all the important information into a single plot. It could be the 180% of historical average of snowpack, which will be melting in a couple months. Monitoring location 11277500 is associated with a LAKE, RESERVOIR, IMPOUNDMENT in TUOLUMNE COUNTY, CALIFORNIA. 501(c)3 organization, federal tax ID #942419885. The height of the row indicates how much water the reservoir could hold. reserved. 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. Data have been checked by the reporting agency. function resizeframe(){ However, I am interested in how much we are saving. The area around Shasta has more volcanic soils that absorb rainfall than the Feather River drainage. All Rights Reserved. the map graph doesnt include berryessa. The reservoir is now projected to cost $4.4 billion, with Prop. I havent spent much time looking at it but that data is on the CDEC website. ) or https:// means youve safely connected to the .gov website. 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. 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. It didnt end the drought, but it was definitely really good," said Ritchie. His recent work has examined the impacts of drought, threats to public lands and wildlife, and the nation's widening rural-urban divide. Meant this comment for the integrated snowpack and reservoir view. . 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. mandate within You dont see runoff right away, the snow is still up there, frozen, doing what we want it to do, he said. 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. Folsom is like an overflow tank. Just in case a large storm hits, that way they dont reach 100% capacity. Id only be interested in the totals from Oroville and Shasta. Nice! I like the comparisons of last year, and the historical average. My guess would be that the recent systems have been cold and so they are predominantly dropping snow on the watershed. Hoping they start building more reservoirs soon. United States. It seems likely one of those two readings is wrong. 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. Forty-six percent . This almost happened with the Orville Dam in 2017. This chart only shows reservoirs filled via natural flow/rainfall. The reservoir is eight miles long and the largest single body of water in Yosemite. 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. This is my first year watching the levels, so maybe Im missing something. Francisco Bay Area. In addition, San Francisco receives approximately one-tenth of its power from hydroelectricity generated by the gravity-driven flow from the Hetch Hetchy Reservoir. The Water Education Foundation is a nonprofit, tax-exempt, a broad meaning that had been previously applied in an word for a type of wild grass. I recently joined the team with Restore Hetch Hetchy as Engagement & Development Director. Visualization was done in javascript and specifically the D3.js visualization library. Quite an eye opener. In 2021, the SFPUC and the Modesto and Turlock Irrigation Districts launched a proactive pilot program with the U.S. the Hetch Hetchy Valley to its natural state. Within San Francisco, we manage water distribution in the City. Maybe just acre/ft with ^ or down arrow. Could you also do the same for the Colorado River reservoirs to see how they are fairing? With modest additional investments San Francisco will be able to maintain an uninterrupted supply of high quality Tuolumne River water. Our flagship blog features analysis of news from our staff and announcements of upcoming events. The Hetch Hetchy Reservoir that supplies San Francisco, seen here in February, is among those that have refilled after two months of storms. According to the San Francisco Public Utilities Commission, Hetch 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. 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. 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. "In contrast, the Shasta Lake drainage had only a couple of stations in excess of 10 inches whereas most received less. looks like the CDEC website is the cause of the issue unless it actually dropped 90% in a day: Required fields are marked *. Theyve also seen drought surcharges on their water bills. The question was, what constitutes unreasonable method of That cant be right. Excellent graphic! Diamond Valley Lake is a man-made storage reservoir for storing imported water only. in 2018. construction in the 1920s, various groups have lobbied to restore Upcountry and the Bay Area. Part of the lake is on the California side, but it has zero California water impact beyond the immediate Tahoe residents. Your email address will not be published. https://cdec.water.ca.gov/dynamicapp/QueryDaily?s=SHA Restore Hetch Hetchy. The snowpack there, which will eventually melt and flow into reservoirs, is already bigger than the average peak snowpack, which typically comes around April 1. Its currently listed on this page as 29kaf full, but the usgs.gov page below says Hetch Hetchy is at 299.7kaf full. 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. Gavin Newsom asked all California residents to voluntarily reduce use by 15% compared with use in 2019. 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. BAWSCA agencies advocated for the capital improvement program that was adopted by the SFPUC in 2002, and are actively monitoring its implementation. Save my name, email, and website in this browser for the next time I comment. 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. Could the reason be that the water from Lake Alma or seems to be used for energy generation, and that there does not seem to be any agricultural or urban use? I realize there we dont want to reservoirs overflowing, but why are we still below historical average? The captured water is piped 150 miles to the Bay Area. Trinity Lake, with a capacity of 2,447,650 acre-feet, had the smallest increase, from 29% in December to 30% in January. document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); Subscribe to receive email notifications of new content. Yoohyun Jung is the Deputy Data Editor for The San Francisco Chronicle. Add a button to convert the row heights to log scale. Share sensitive information only on official, secure websites. pertained to water that was wasted, and there was no claim that 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. How do I contact support? 1 kaf is the amount of water that would cover 1 acre in one thousand feet of water (or 1000 acres in water in 1 foot of water). If we reach 100% after the current rains and then it stops raining for the season, then our percentage will start going down. Just a wistful thought, it would be really cool to graph the water release statistics. 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, Here's where California reservoir levels stand after this week's rains, Going to Tahoe this weekend? Hetchy Reservoir can store as much as 117 billion gallons for the Shasta is the reservoir with the largest capacity and so it is the tallest row. San Francisco voters have demonstrated their opposition to has a graph which shows how the historical avg changes throughout the year (oscillating between ~15000 and ~21000). And more work is underway. 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. There is something strange about the data over the last two days (Jan.17 to Jan. 19): The Hetch Hetchy Reservoir in Yosemite delivers water to 2.6 million Bay Area residents every day. 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. 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 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. One of the big challenges in water management is controling the release. maybe label the vertical axis with aggregate total or system total capacity. Impounded by OShaughnessy 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. 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%. As of Feb. 1, the systems total water storage was just over 1.3 million acre-feet, or about 92% of capacity. I live in the central valley. "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. Omar, Thanks! . Waterfalls gushed at Hetch Hetchy after an atmospheric river event in October 2021. //this function is called from the javascript from within the iframe after the contents of iframe are loaded (and after an additional 150ms delay) Ive been meaning to search for aquifer levels. 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. In Yosemite National Park, the Hetch Hetchy reservoir relies. Love the dashboard! diversion of water? Restore Hetch Hetchy claimed the phrase had Locked padlock At this facility, which is shared with other water agencies, the city can stash water for credits against future draws on the river. The data on water storage comes from the California Department of Water Resources (DWR) Data Exchange Center. Why is it not listed? The dam and reservoir are the source for the Hetch Hetchy Aqueduct, which provides water for over . Lake Shasta, the state's largest reservoir, rose 2.9 feet and added 31,020 acre-feet of water. 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. It was the only tool that I could find that would allow me to make a vertical marimekko graph. Greetings from Mount Laurel New Jersey. dam and restoring the valley. I have wanted to do exactly this plot for years. 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. I second that request. McClintock bill proposes to improve public access at Hetch Hetchy. 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? These graphs will always read low because they represent the percentage of the seasonal average at some point before the end of the season. A question: the Historical Avg*, is it the value of year-today or natural year? 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. administration attempted to allocate funds to study removing the 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. The construction of the Hetch Hetchy Railroad took place from 1915 to 1918. Similar findings are described in theUC Davis studyRe-Assembling Hetch HetchyandUS Bureau of Reclamation study. For example, the average storage level for Feb. 7 is usually 65% of capacity for Trinity Dam, but currently its at 31%. For the first week of February, there was a slight increase for most reservoirs from January amounts. Owned by the city of San Francisco, Hetch Hetchy Reservoir Restore Hetch Hetchys subsequent appeal to the ruling was For some strange unknown reason, they are not allowing the lake to fill up. Flood control agencies (not DWR) have the most say in regard to releases. How come the totals disagree with the cal map graphic? I appreciate the information you are providing. Thanks. The remaining 15 percent of water comes from runoff in the Alameda and Peninsula watersheds. Begin at O'Shaughnessy Dam. Your Privacy Choices (Opt Out of Sale/Targeted Ads). 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. 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. 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. You can sort the mekko graph by size largest at the top to smallest at the bottom or by reservoir location, from north to south. Related articles . Ive added it to my bookmarks for quick reference. The source water from SFPUC is typically from the Hetch Hetchy reservoir located in the Sierra Nevada Mountains. "It's an increase of a few percent, . Meanwhile, the group Restore Hetch Hetchy is urging the SFPUC to abandon Hetch Hetchy Reservoir. This is a great and very thoughtfully designed web site! **new combined California reservoir and snowpack visualizer**, made a bar graph showing the overall level of water in the major California reservoirs, the California Department of Water Resources (DWR) Data Exchange Center. 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. A lock ( ) or https:// means youve safely connected to the .gov website. 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. They are releasing water into the canals. Hetch Hetchy is one of nine reserviors in a water system that serves San Francisco and other Bay Area communities. 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 remaining 15 percent of water comes from runoff in the Alameda and Peninsula watersheds. 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. At the moment, I am not interested in the debate. globe.height = globe.contentWindow.document.body.scrollHeight+40+"px"; "It was a very healthy shot in the arm. Thank you for a beautiful job. Great URL. 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. UPDATE: Here's where California reservoir levels stand after this week's rains. The proportion of blue to brown will show how full it is, while the red line shows the historical level that reservoir is typically at for this date of the water year. An improvement: Could you include a bar for Last year at this date? 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. What happened to the Hetch Hetchy level? The OShaughnessy Dam i s 300 feet tall only medium-sized by todays standards. The worst possible scenario is it just remains completely dry.