Commission. This file photo shows Shasta Lake. . Thats just another very strong indication visually that its a big water year.. I would think with the rain it would get to historical average and then more outflow would happen. Required fields are marked *. At this facility, which is shared with other water agencies, the city can stash water for credits against future draws on the river. McClintock bill proposes to improve public access at Hetch Hetchy. I like the comparisons of last year, and the historical average. LK ELEANOR NR HETCH HETCHY CA - USGS Water Data for the Nation Meanwhile, the group Restore Hetch Hetchy is urging the SFPUC to abandon Hetch Hetchy Reservoir. Data have been checked by the reporting agency. Is California's drought over? Here's what you need to know about rain Thank you! thanks. Amy Graff is the news editor for SFGATE. The name Hetch Hetchy is derived from a Sierra Miwok Each row represents one reservoir, with bars showing how much of the reservoir is filled (blue) and unfilled (brown). 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. 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. Great visualization Chris! 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. All rights 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. The blue line indicates the reservoirs water level one year ago today. 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). Ive added it to my bookmarks for quick reference. That cant be right. At the moment, I am not interested in the debate. Hetch Hetchy Reservoir (Yosemite National Park) - Tripadvisor Current conditions of LAKE OR RESERVOIR WATER SURFACE ELEVATION ABOVE NGVD 1929 and RESERVOIR STORAGE are available. 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. So they should be saving much more and deal with the .000001 of risk later. hetch hetchy reservoir level percentage - Examiner //this function is called from the javascript from within the iframe after the contents of iframe are loaded (and after an additional 150ms delay) Trinity Lake, with a capacity of 2,447,650 acre-feet, had the smallest increase, from 29% in December to 30% in January. Despite Record Drought, Hetch Hetchy Reservoir Levels At 92 Percent I will take a look and see if there are other important reservoirs missing and may add them in the future. While the long-term voluntary agreement work continues, the SFPUC does not want to wait to restore the Tuolumne Rivers ecosystem. Nate, thanks for the insight. But the growing water reserves dont please everyone. I appreciate the information you are providing. We own and operate the Hetch Hetchy Regional Water System which serves 2.7 million customers. The advocacy group Restore Hetch Hetchy took its case for 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. The SFPUC hoards water in dry years when they dont need to, said Peter Drekmeier, policy director at the conservation group Tuolumne River Trust. Good info to know. https://cdec.water.ca.gov/dynamicapp/QueryDaily?s=HTH Thanks for taking the time to do that. This is my first year watching the levels, so maybe Im missing something. According to the San Francisco Public Utilities Commission, Hetch Could you also show each reservoirs level as a function of time? Restore Hetch Hetchy. Im curious why the percentage of capacity has stayed almost flat for the past 6 weeks or so and below historical average. draining the reservoir to court, arguing in 2015 that the They placed a few dissipators just before the river. Similar findings are described in theUC Davis studyRe-Assembling Hetch HetchyandUS Bureau of Reclamation study. For detailed analysis of how San Franciscos water system will operate without Hetch Hetchy reservoir, see the Environmental Defense Funds studiesParadise RegainedandCherry Intertie Alternative. She is a University of Washington graduate. Over the summer, Gov. San Francisco and the thousands of suburban . San Franciscos water system, which includes Hetchy Hetchy, is expected to fill this winter for the first time since 2019. 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. 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. globe = document.getElementById('mekko'); best to drain the valley. 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. 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 . It has no natural inflow or out flow. Very nice work. 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. Water System | SFPUC This other page: Quite an eye opener. it will be cool if there is a way to track the change since Dec or some such date. pertained to water that was wasted, and there was no claim that document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); Subscribe to receive email notifications of new content. BAWSCA Board of Directors Meeting, March 16, 2023, 6:30 PM. It could be the 180% of historical average of snowpack, which will be melting in a couple months. But they'll cost you, Fight at high school basketball game in S.F. scenic mountain valley in a national park. function reloadiframes(){ A separate vote would have been 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. a broad meaning that had been previously applied in an One acre-foot is the equivalent of one acre of land covered in one foot of water. John Muir and the the issue, including those under Franklin Delano Roosevelt, It was the only tool that I could find that would allow me to make a vertical marimekko graph. Its important to note that other communities in California have taken actions in far greater magnitude than SF to make our waterways more sustainable. California Reservoir Levels - Dashboard and visualization showing current water levels in California reservoirs . Having it here would be great! The current power produced by the SFPUC system, although not carbon-based, is not green since it requires the continued destruction of significant habitat. Hi Keith, you could de-select the large reservoirs from the menu at the top right. This is wonderful information. Lake Shasta and Mendocino are also well below average. Hetch Hetchy Reservoir in Yosemite National Park is seen in 2022. For each of the top 8 reservoirs the storage has increased by a total of 217 kaf, however). O'Shaughnessy Dam was built on the Tuolumne River in 1923 to create Hetch Hetchy Reservoir. 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. Current as of October 03, 2022 | Updated by . Even with the latest precipitation, Folsoms values was unchanged. Upcountry and the Bay Area. Secure .gov websites use HTTPS Francisco Public Utilities Commissions 26 wholesale customers globe.height = globe.contentWindow.document.body.scrollHeight+40+"px"; administration attempted to allocate funds to study removing the SF's Hetch Hetchy water system is almost full. Is that a good thing? however, Ill update the code to include it soon. Here's what that means. Thanks for the link. 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%. 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. . California reservoir levels: . 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. Restore Hetch Hetchy supports a power replacement plan that is truly renewable, and will not increase emissions of any pollutants or carbon that causes global warming. 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. Although Hetch Hetchy Reservoir is the most well-known, it stores less than 25% of the system's water. Thats a great suggestion and one that would be particularly helpful! Can a rock climber help 'restore' Yosemite's Hetch Hetchy Valley? For the first week of February, there was a slight increase for most reservoirs from January amounts. The SFPUC has consistently stated that voluntary agreements are the best path forward for the Bay-Delta, as the voluntary agreement strikes the right balance between environmental stewardship and water reliability. 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). Official websites use .gov earthquake. a minimum, according to the San Francisco Public Utilities UPDATE: Here's where California reservoir levels stand after this week's rains. setTimeout(function (){ The gain came after weather gauges in the area recorded more than 5 inches from one storm. Hetch Hetchy Regional Water System The Hetch Hetchy watershed, an area located in Yosemite National Park, is the major source of water for all of San Francisco's water needs. California drought: Charts show where reservoir levels stand after a dry January, Track water shortages and restrictions across Bay Area. proposed as a source of water following the 1906 San Francisco Maybe just acre/ft with ^ or down arrow. The dam and reservoir are the source for the Hetch Hetchy Aqueduct, which provides water for over . Water data back to 1930 are available online. ) or https:// means youve safely connected to the .gov website. Article X, Section 2 that requires diversions for all water California drought: Charts show where reservoir levels stand after a United States. Monitoring location 11277200 is associated with a LAKE, RESERVOIR, IMPOUNDMENT in TUOLUMNE COUNTY, CALIFORNIA. Navigation and Navigable Waters 33.208.82 Hetch Hetchy, Cherry Valley, and Don Pedro Dams and Reservoirs. 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. The reservoir is now projected to cost $4.4 billion, with Prop. Love this. the city wastes water, so it was a moot issue. I live in the central valley. In response to the Bay-Delta Plan, the SFPUC and the Modesto and Turlock Irrigation Districts have proposed the Tuolumne River Voluntary Agreement, a combination of flow and non-flow measures sufficient to improve all life-stages of native fish populations in the lower Tuolumne River. Wonderful site. Great URL. How can I apply to SFPUC? 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. Add a button to convert the row heights to log scale. Thanks for developing it, and for sharing it with the rest of us! FYI it looks like Isabella is reading incorrectly, likely because its well above 100%. . 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. Omar, Thanks! How Much Water is in California Reservoirs? I would like to make one small suggestion:. and its snowmelt-fed water supply, water from Hetch Hetchy According to the San Francisco Public Utilities Commission, Hetch Hetchy Reservoir can store as much as 117 billion gallons for the Hetch Hetchy Regional Water System, which serves San Francisco, Santa Clara, Alameda and San Mateo counties. Rizzardo said there was a decent amount of flow into the reservoirs into January, even though weather-wise it was bone dry, a result of lower elevation snow at 4,000 to 6,000 feet making its way into the reservoirs. You can email her at agraff@sfgate.com. Have you looked into that side of the water management equation? The data on water storage comes from the California Department of Water Resources (DWR) Data Exchange Center. rejected by an appellate court and the California Supreme Court It can take several days to see the full impact on reservoirs as water continues to run through watersheds and into streams in the days after a storm. San Franciscos water-bank in Don Pedro Reservoir, downstream on the Tuolumne River, holds twice as much water as Hetch Hetchy. 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. Another not monitored by the State? Map shows stunning improvement in California drought Your email address will not be published. Although Hetch Hetchy Reservoir is the most well-known, it stores less than 25% of the systems water. Remember, much of the state is still in a drought and so the prudence is warranted.. "It is unknown how much area of the Feather River and Shasta Lake drainages are impacted by hydrophobic soils.". Super frustrating. Thanks for providing it for public information. PDF Water Supply Update - California Interactive California Reservoir Levels Dashboard - Engaging Data 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. A Map and Guide to Hetch Hetchy Reservoir at Yosemite - TripSavvy These graphs will always read low because they represent the percentage of the seasonal average at some point before the end of the season. 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 Heres an example of that data for Shasta, where you can see the daily inflows and outflows: An official website of the United States government. What happened to the Hetch Hetchy level? Sometimes this is well done sometimes it is poorly done. Secure .gov websites use HTTPS Isabella is filling quite slowly in order to test out the new $500 million spillway. } Lake Mendocino and Lake Berryessa water levels stayed the same. 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. The Hetch Hetchy Reservoir that supplies San Francisco, seen here in February, is among those that have refilled after two months of storms. One of the most impressive was Hetch Hetchy, which provides drinking water to 2.6 million people in San Francisco and other Bay Area communities. 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. Diamond Valley Lake is a man-made storage reservoir for storing imported water only. Hetch Hetchy is one of nine reserviors in a water system that serves San Francisco and other Bay Area communities. Located in the northwest portion of Yosemite National Park, Hetch Forty-six percent . 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. Lake Almanor isnt controlled by DWR for flood/supply. 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. Lots of possibilities, just curious. Especially for small ones it is hard to identify them and click on them. function resizeframe(){ construction in the 1920s, various groups have lobbied to restore If you are on a computer, you can hover your cursor over a reservoir and the dashboard at the top will provide information about that individual reservoir. 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). Restoring Hetch Hetchy Valley will allow all three power plants to remain operational but will reduce power generation at these by about 20% an average of about 350 million kWh per year. In 2007, the Bush We provide water directly to customers in San Francisco and wholesale through 26 Water agencies in Alameda, Santa Clara, and San Mateo counties. P.S. But tearing down O'Shaughnessy Dam in order to restore Hetch Hetchy Valley would be a disaster. 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). This is the first state (of 6 I have lived in) that has had water police and restrictions. The Bay Area's main reservoir is up 21 feet. around the Bay Area rely on the Hetch Hetchy Regional Water Remaining Capacity text in the legend should be brown? "In contrast, the Shasta Lake drainage had only a couple of stations in excess of 10 inches whereas most received less. Top ways to experience Hetch Hetchy Reservoir and nearby attractions Yosemite: Audio Driving Tour 1 Full-day Tours from $9.99 per group (up to 8) Private Yosemite Explorer Package | 3 Days of Adventure 3 Private and Luxury from $750.00 per adult (price varies by group size) Private Family Photo Day in Yosemite 78 Recommended Full-day Tours from In 2016, a Tuolumne County Superior Court judge dismissed the The information on Isabella has been fluctuating drastically (by a factor of 10!) ", The difference in soil type in the two watersheds was likely another factor. 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. maybe label the vertical axis with aggregate total or system total capacity. 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). Email: kellie.hwang@sfchronicle.com, Yoohyun.Jung@sfchronicle.com Twitter: @KellieHwang, @yoohyun_jung. 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. the map graph doesnt include berryessa. Shasta, Oroville, Hetch Hetchy and many others were built by damming large rivers.
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