A question: the Historical Avg*, is it the value of year-today or natural year? it will be cool if there is a way to track the change since Dec or some such date. 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. San Francisco operates three medium-sized hydro-electric power plants in the Tuolumne River watershed Kirkwood, Moccasin, and Holm. window.addEventListener("orientationchange", function() { I find myself coming back to this every few days to check on our water . their water supply would cost hundreds of millions of dollars at System for more than 60 percent of their drinking water. Share sensitive information only on official, secure websites. 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. 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. Units are in kaf, thousands of acre feet. All rights reserved. Thank you for a beautiful job. word for a type of wild grass. Data and Tools Just in case a large storm hits, that way they dont reach 100% capacity. At the height of the recent drought, they still had at least four years in storage. And for the years they were hoarding water, the salmon-based ecosystem suffered.. Best of luck out there in California! Los Angeles,Orange CountyandSan Josehave developed ambitious water recycling programs and have vastly improved local groundwater management. One gauge in the area has measured 6.12 inches since Oct. 1, which is 899% of normal. This is also affected by most of these dams multi-purpose nature where they are near constantly releasing for power(like Shasta) or to make room for flood control capacity(like Folsom). resizeframe(); Usually with warm ARs, you get a dramatic increase in inflow, which can fill even very large reservoirs relatively quickly, like Oroville in 2017. Isabella is filling quite slowly in order to test out the new $500 million spillway. Over the summer, Gov. At this facility, which is shared with other water agencies, the city can stash water for credits against future draws on the river. 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). It would be really interesting to visualize whether were able to replenish ground water this year after all the precipitation. How do I contact support? An official website of the United States government. Id only be interested in the totals from Oroville and Shasta. Current conditions of LAKE OR RESERVOIR WATER SURFACE ELEVATION ABOVE NGVD 1929 and RESERVOIR STORAGE are available. Hetch Hetchy water travels 160 miles via gravity from Yosemite to the San Francisco Bay Area. There is something strange about the data over the last two days (Jan.17 to Jan. 19): Next feature request: wire in aquifer level data! 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. San Francisco maintained the phrase only Also a little nit. For detailed analysis of how San Franciscos water system will operate without Hetch Hetchy reservoir, see the Environmental Defense Funds studiesParadise RegainedandCherry Intertie Alternative. Save my name, email, and website in this browser for the next time I comment. do so. I second that request. In whats known as the Bay-Delta Plan, state water regulators are amid a years-long effort to negotiate a policy for how much water should be kept in rivers that flow to the Sacramento-San Joaquin River Delta to meet the needs of both people and wildlife. Water storage facilities include watersheds, dams, and reservoirs including: Calaveras, San Antonio, Crystal Springs, Pilarcitos, and San Andreas. In 2016, a Tuolumne County Superior Court judge dismissed the The Bay Area's main reservoir is up 21 feet. Park visitors walk across OShaughnessy Dam in Yosemite National Park on Sept. 1. And early forecasts show the rest of the wet season is not likely to produce enough precipitation. Heres where California reservoir levels stand after this weeks rains. Trailhead coordinates: 37.946905, -119.787376 (37 56 48.85N 119 47 14.55W) An official website of the United States government. Assistant General Manager for Water Steven Ritchie credits the way the system is managed along with lower. It is on the graph. I know this might be difficult to display but Im very curious on the actual amounts of water consumed on a monthly basis and if this is somehow processed in a certain between what is agricultural and what is non-commercial etc? It carried workers and materials for the dam, as well as tourists, postage and other amenities. 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. 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. Find out more about the system at http://www.sfwater.org, BAWSCA Board Policy Committee Meeting, April 12, 2023 1:30pm. The remaining 15 percent of water comes from runoff in the Alameda and Peninsula watersheds. It was the only tool that I could find that would allow me to make a vertical marimekko graph. 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. rejected by an appellate court and the California Supreme Court . 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. This chart only shows reservoirs filled via natural flow/rainfall. The average for this time of year is approximately 4,659.57ft, plus or minus 39ft. Why is Lake Nacimiento and Lake San Antonio not listed? 2151 River Plaza Drive, Suite 205 I had a class in spillway design many years ago. Your Privacy Choices (Opt Out of Sale/Targeted Ads). River. Sometimes this is well done sometimes it is poorly done. Instructions: For perspective, water demand across the SFPUC's service area of 2.7 million people was about 205,000 acre-feet last fiscal year. Much of the recent inflow was to Hetch Hetchy, which can hold. Part of the lake is on the California side, but it has zero California water impact beyond the immediate Tahoe residents. Reservoir behind OShaughnessy Dam does not require filtration. P.S. "It is unknown how much area of the Feather River and Shasta Lake drainages are impacted by hydrophobic soils.". 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. 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. In fact, thanks to a little snowmelt, water levels were up for all reservoirs from December to January. Together, the BAWSCA agencies account for two-thirds of water consumption from the system and pay for two-thirds of its upkeep. Add a button to convert the row heights to log scale. LK ELEANOR NR HETCH HETCHY CA. Great work. So my question is, How do we know if we are saving the water for later release (late summer) or are we releasing it to the ocean? I live close to Eastman Lake. SFPUC said as of this week, the Hetch Hetchy reservoir is at 92 percent capacity. Spring snowmelt runs down the Tuolumne River and fills Hetch Hetchy, the largest reservoir in our water system. The current power produced by the SFPUC system, although not carbon-based, is not green since it requires the continued destruction of significant habitat. 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. Read more about the data team and their work. The amount stored is increasing, just not by a lot. I am new to the state. the map graph doesnt include berryessa. . Thank you for the time and effort in creating the graphs. 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. You can also use it to monitor only the reservoirs you are most interested in. supplies water to the San Francisco Bay Area. San Francisco and the thousands of suburban . It used to be full (and beyond). 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 not possible to see or really interact with the tiniest slivers. the Hetch Hetchy Valley to its natural state. I will take a look and see if there are other important reservoirs missing and may add them in the future. 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. Could you also show each reservoirs level as a function of time? Good info to know. It certainly looks dry at least until the last week in February, he said. Major snowstorm might leave you stranded, New 101 express lanes opens in Bay Area. Sacramento CA 95833, Everything about California water that matters, Western States Water Agencies and Districts. Although Hetch Hetchy Reservoir is the most well-known, it stores less than 25% of the system's water. I think the problem is with the CDEC database (as the LakesOnline website also has had incorrectly high information). 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. Love easy to read and understand information. Related articles . Remaining Capacity text in the legend should be brown? To reach Hetch Hetchy, you have to exit Yosemite National Park and re-enter it. 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. Thanks for developing it, and for sharing it with the rest of us! Trinity Lake, with a capacity of 2,447,650 acre-feet, had the smallest increase, from 29% in December to 30% in January. https://waterdata.usgs.gov/monitoring-location/11275500/#parameterCode=00054&period=P7D. https://engaging-data.com/ca-reservoir-level/ Especially for small ones it is hard to identify them and click on them. 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. Ive been meaning to search for aquifer levels. Your tools are awesome just hurts when you receive bad data at times! The water system, which includes the landmark Hetch Hetchy Reservoir, is expected to fill this winter, for the first time since 2019, with nearly 1.5 million acre-feet of water. "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. Arg. 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. Nate, thanks for the insight. How can I match up other monitoring locations similar to the ones on this Interactive Dashboard? since it required flooding a In another sign that Californias drought is easing, San Francisco captured more than a years worth of water in just one months time. 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 . That said, most of its outflow makes its way down Feather River (via Rock Creek Reservoir) and ultimately into Orville. Check out my **new combined California reservoir and snowpack visualizer** to compare to historical values, as well asthe California precipitation tracker and California snowpack visualizer.

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