Hetchy refers to a valley in the Sierra Nevada and a reservoir that I would think with the rain it would get to historical average and then more outflow would happen. not passed until 1928 five years after the dam was built. "Soils that have become hydrophobic due to wildfire can also contribute to increased runoff because the water is less able to penetrate the burned soil," the department said. He frequently writes about water, wildfire, climate and the American West. If a reservoir gets filled to 100% and more, the dam will break and many cities will get flooded, so the operators are careful. 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. 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. Water data back to 1956 are available online. 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. globe = document.getElementById('mekko'); Great resource! All rights How do I contact support? //this function is called from the javascript from within the iframe after the contents of iframe are loaded (and after an additional 150ms delay) If we reach 100% after the current rains and then it stops raining for the season, then our percentage will start going down. the map graph doesnt include berryessa. This local water is captured in reservoirs located in San Mateo and Alameda counties. You can also use it to monitor only the reservoirs you are most interested in. Awesome work!! Excellent graphic! http://www.tuolumnerivermanagementplan.com. However, I am interested in how much we are saving. 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. Share sensitive information only on official, secure websites. 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. Thats a very poor design. the Hetch Hetchy Valley to its natural state. Official websites use .gov Jeff, the average changes daily as well. This is a great and very thoughtfully designed web site! The Hetch Hetchy Reservoir that supplies San Francisco, seen here in February, is among those that have refilled after two months of storms. Thanks for taking the time to do that. over the past few days. She is a University of Washington graduate. 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. Delivery rates are 7-day average values. "It is unknown how much area of the Feather River and Shasta Lake drainages are impacted by hydrophobic soils.". Northern California's reservoir levels continued to rise in the week after an atmospheric river slammed the state with torrential rain and high winds. LK ELEANOR NR HETCH HETCHY CA. 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. function resizeframe(){ I think the problem is with the CDEC database (as the LakesOnline website also has had incorrectly high information). The blue line indicates the reservoirs water level one year ago today. 7 days 30 days Fish and Wildlife Service that provides an immediate $4 million investment for habitat improvements for fisheries in the Tuolumne River. My guess would be that the recent systems have been cold and so they are predominantly dropping snow on the watershed. 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. Meanwhile, the group Restore Hetch Hetchy is urging the SFPUC to abandon Hetch Hetchy Reservoir. 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. Next feature request: wire in aquifer level data! 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. But they'll cost you, Fight at high school basketball game in S.F. But Sites would be what's called an off-channel . The Hetch Hetchy Reservoir in Yosemite delivers water to 2.6 million Bay Area residents every day. It certainly looks dry at least until the last week in February, he said. . They placed a few dissipators just before the river. 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). If we reach 100% after the current rains and then it stops raining for the season, then our percentage will start going down. The only improvement I would ask you to consider is to allow the Y-axis to be Linear or Log, the latter allowing us to see all the small reservoirs quite easily. Is that a good thing? Our flagship blog features analysis of news from our staff and announcements of upcoming events. Thank you for a beautiful job. The BAWSCA agencies are therefore key stakeholders in ensuring the system serves as a reliable source of high quality water. Los Angeles,Orange CountyandSan Josehave developed ambitious water recycling programs and have vastly improved local groundwater management. 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. So its volume is counted as Orville inflow. It carried workers and materials for the dam, as well as tourists, postage and other amenities. The maximum that the city has put away is 570,000 acre-feet of water. currently, there is a lot more water coming in than going out. I find myself coming back to this every few days to check on our water . 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. All Rights Reserved. 501(c)3 organization, federal tax ID #942419885. Share sensitive information only on official, secure websites. An official website of the United States government. A .gov website belongs to an official government organization in the Great Job on this site! I was thinking that it would be interesting to compare inflows and outflows. It is on the graph. Californias largest water agencies, in both the urban and agricultural sectors, have invested in ambitious groundwater banking programs inKern County. 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. Thanks for the prompt reply! We own and operate the Hetch Hetchy Regional Water System which serves 2.7 million customers. She was previously an engagement reporter. Very nice work. 95 percent of. Trailhead address: Evergreen Road (Hetch Hetchy Road), Yosemite National Park, CA 95321. FYI it looks like Isabella is reading incorrectly, likely because its well above 100%. As it is, at first glance, it looks like shasta is at the top because its 28000 instead of 4552. very nice product overall. Units are in kaf, thousands of acre feet. Park visitors walk across OShaughnessy Dam in Yosemite National Park on Sept. 1. According to the San Francisco Public Utilities Commission, Hetch 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. 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. The overall storage is said to have dropped by 57.4 to 56.4 (or 302 kaf). 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. The regional water system provides water to 2.4 million people in San Francisco, Santa Clara, Alameda and San Mateo counties. This is the first state (of 6 I have lived in) that has had water police and restrictions. 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. ", The difference in soil type in the two watersheds was likely another factor. 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? 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. The half-hour drive to Hetch Hetchy from CA Highway 120 begins outside the park boundaries. word for a type of wild grass. 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. Before returning to the Bay Area, she held roles as transportation reporter and trending news reporter at the IndyStar in Indianapolis. The height of the row indicates how much water the reservoir could hold. Water is rapidly flowing into the state's reservoirs. 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. 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. San Franciscos water-bank in Don Pedro Reservoir, downstream on the Tuolumne River, holds twice as much water as Hetch Hetchy. California snowpack hits highest level this century for March. 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. Python is used to extract the data from this page hourly and wrangle the data in to a clean format. Omar, Thanks! You can email her at agraff@sfgate.com. thanks. Heres where California reservoir levels stand after this weeks rains. Restore Hetch Hetchys subsequent appeal to the ruling was Curious why Shasta lake seems to be making big gains in water coming in and Trinity not so much? Charts from the California Department of Water Resources show conditions at key state reservoirs on Oct. 22 (left) and on Nov. 2 (right). Thats enough to supply the citys service area for perhaps seven years. Official websites use .gov best to drain the valley. The question was, what constitutes unreasonable method of Water data back to 1930 are available online. San Franciscos Hetch Hetchy water system is almost full for the first time in years. They also built a spillway that was too steep and did not install energy dissipators along the spillway. Kellie has held many leadership roles for the Asian American Journalists Association, including most recently a board member for the San Francisco chapter. What rates am I paying? 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. Navigation and Navigable Waters 33.208.82 Hetch Hetchy, Cherry Valley, and Don Pedro Dams and Reservoirs. Ronald Reagan and George W. Bush. The middle portion of the watershed from New Don Pedro Reservoir to above Hetch Hetchy Reservoir is characterized by deep canyons and forested terrain. Just trying to learn here Thanks so much! Wonderful site. Saved to my favorites now. The reservoir is now projected to cost $4.4 billion, with Prop. Love this. Thats just another very strong indication visually that its a big water year.. The information on Isabella has been fluctuating drastically (by a factor of 10!) While constructed and owned by San Francisco, the water system was in fact planned to benefit the greater San Francisco Bay Area population. globe.height = globe.contentWindow.document.body.scrollHeight+40+"px"; Twenty of San Its great seeing all the reservoirs in California at or near historical averages. Theyve also seen drought surcharges on their water bills. His recent work has examined the impacts of drought, threats to public lands and wildlife, and the nation's widening rural-urban divide. Hetch Hetchy water travels 160 miles via gravity from Yosemite to the San Francisco Bay Area. https://engaging-data.com/ca-reservoir-level/ She is also an alumna of Reveal from the Center for Investigative Reporting Investigative Fellowship and The New York Times Student Journalism Institute. Sierra Club unsuccessfully fought the reservoirs establishment Department of Water Resources is just another in a long line of completely mismanaged California entities. } Remember, much of the state is still in a drought and so the prudence is warranted.. Related articles . Thanks for providing it for public information. There are no alerts at this time. . The water transmission system in the Bay Area and Peninsula includes the Bay Division, San Andreas, Sunset Supply, and Crystal Springs pipelines. I am grateful for all that you have done here to open our eyes to what is happening, what has happened, and even what might be on the horizon. Located within the boundaries of Yosemite National Park, the reservoir saw a sizable 21.31-foot bump in its water level and gained 36,300 acre-feet, according to Tuesday data from the U.S. Geological Survey. I live in the central valley. Current and Historical Visualization, https://cdec.water.ca.gov/dynamicapp/QueryDaily?s=HTH, https://cdec.water.ca.gov/dynamicapp/QueryDaily?s=SHA, https://engaging-data.com/ca-reservoir-level/, https://cdec.water.ca.gov/reportapp/javareports?name=RES, Visualizing Californias Water Storage Reservoirs and Snowpack, Interactive California Reservoir Levels Dashboard. reserved. Begin at O'Shaughnessy Dam. YTD values are from January 1 . 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. It is also the amount of water in a cube that is 352 feet per side (about the length of a football field). earthquake. The advocacy group Restore Hetch Hetchy took its case for proposed as a source of water following the 1906 San Francisco From the main road, it's about a 20- to 25-minute drive to the parking area. Hetch Hetchy Regional Water System, which serves San Francisco, Even with the latest precipitation, Folsoms values was unchanged. Hoping they start building more reservoirs soon. Are they releasing water to relieve the pressure in anticipation of more water? Lake Almanor isnt controlled by DWR for flood/supply. John Muir and the At this facility, which is shared with other water agencies, the city can stash water for credits against future draws on the river. Yes, and why is Twitchell Dam also not listed? Major snowstorm might leave you stranded, New 101 express lanes opens in Bay Area. For perspective, water demand across the SFPUCs service area of 2.7 million people was about 205,000 acre-feet last fiscal year. dam and restoring the valley. Partly because of low water, the rivers chinook salmon runs have plummeted from tens of thousands of fish annually a few decades ago to fewer than 1,000 in recent years. around the Bay Area rely on the Hetch Hetchy Regional Water Great stuff. San Francisco and the thousands of suburban . Could you also do the same for the Colorado River reservoirs to see how they are fairing? I love this this site too. By a large measure, damming and flooding Hetch Hetchy is the most significant damage ever allowed in any of our national parks. Hetch Hetchy water travels 160 miles via gravity from Yosemite to the San Francisco Bay Area. Hours: Year-round, but only accessible by car when the Hetch Hetchy Road is open. 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. How Fast Are California Reservoirs Filling Up? The construction of the Hetch Hetchy Railroad took place from 1915 to 1918. What happened to the Hetch Hetchy level? But I would never have imagined how to put all the important information into a single plot. We provide water directly to customers in San Francisco and wholesale through 26 Water agencies in Alameda, Santa Clara, and San Mateo counties. Even with all the rain and floods, still a long way to fill them to capacity. This file photo shows Shasta Lake. Owned by the city of San Francisco, Hetch Hetchy Reservoir So on Jan 10 were at 82% of the average for Jan 10. 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. the city wastes water, so it was a moot issue. 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. It was at 60 percent as of March 1 and rising, according to the Bureau of Reclamation. 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. Its fluctuating between ~107% and ~20% from one hour to the next (reading 107.6 atm). If you look at the inflow data on the major reservoirs, its pretty flat. Waterfalls gushed at Hetch Hetchy after an atmospheric river event in October 2021. 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. https://cdec.water.ca.gov/dynamicapp/QueryDaily?s=SHA Greetings from Mount Laurel New Jersey. Required fields are marked *. Several cities and water agencies that are now part of BAWSCA urged Congress to pass the Raker Act in 1913, the law that allowed federal lands in the Sierra Nevada Mountains, including Hetch Hetchy Valley in Yosemite National Park, to be used to build the water system. And early forecasts show the rest of the wet season is not likely to produce enough precipitation. mandate within 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. Lots of possibilities, just curious. 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. Occasionally the source water will shift to local reservoirs during routine maintenance to the conveyance system. Thats a great suggestion and one that would be particularly helpful! It does not meet the California definition of renewable energy. Really appreciate the work you did to build this graph. I like the comparisons of last year, and the historical average. Important Legacy real-time page. Its water supply Hetch Hetchy Reservoir, in the Sierra Nevada is 80% full, . Article X, Section 2 that requires diversions for all water 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. As of Feb. 1, the systems total water storage was just over 1.3 million acre-feet, or about 92% of capacity. Most local reservoir inflow timeseries are too short to calculate long-term values. reloadiframes(); The reservoir is eight miles long and the largest single body of water in Yosemite. 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. Santa Clara, Alameda and San Mateo counties. You can find the charts below from the California Department of Water Resources website. document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); Subscribe to receive email notifications of new content. This dashboard provides a bit more detail on the state of each of the reservoirs while also showing an aggregate total. a broad meaning that had been previously applied in an The soaking was welcome in a drought-plagued state with a diminishing water supply. Is the Stanley Quencher tumbler worth its TikTok hype? Hetch Hetchy is one of nine reserviors in a water system that serves San Francisco and other Bay Area communities. Also, do they provide inflows and outflows for locations? Good info to know. What happened to the Hetch Hetchy level? Quite an eye opener. 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. San Francisco maintained the phrase only 2013, photo, the Hetch Hetchy Reservoir is hazy with smoke . Prior to The Chronicle, she worked as a data journalist for Honolulu Civil Beat, a watchdog news organization covering the Hawaiian islands. I notice Briones Reservoir is not on the list. California drought: Charts show where reservoir levels stand after a dry January, Track water shortages and restrictions across Bay Area. Your email address will not be published. Much of the recent inflow was to Hetch Hetchy, which can hold. Amy Graff is the news editor for SFGATE. Monitoring location 11277200 is associated with a LAKE, RESERVOIR, IMPOUNDMENT in TUOLUMNE COUNTY, CALIFORNIA. the Bay Area. 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). 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. February 21, 2023 - BAWSCA Statement on State Water Resources Control Board'sSchedule for Consideration of a Voluntary Agreement for the Tuolumne River. . 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. document.getElementById('globes').contentWindow.location.reload(); I see many of the local canals flowing with lots of water. 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. 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?
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