This dashboard provides a bit more detail on the state of each of the reservoirs while also showing an aggregate total. Current conditions of LAKE OR RESERVOIR WATER SURFACE ELEVATION ABOVE NGVD 1929 and RESERVOIR STORAGE are available. 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 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. UPDATE: Here's where California reservoir levels stand after this week's rains. But tearing down O'Shaughnessy Dam in order to restore Hetch Hetchy Valley would be a disaster. 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 wont be full until Spring snowmelt. This is the first state (of 6 I have lived in) that has had water police and restrictions. Id only be interested in the totals from Oroville and Shasta. During most years, there will be a 30-day shut down of the Hetch Hetchy source in the winter months. After the reservoirs Having it here would be great! It is also the amount of water in a cube that is 352 feet per side (about the length of a football field). Climbers Timmy O'Neill (left) and Lucho Rivera atop a wall overlooking Hetch Hetchy Reservoir. Why is it not listed? in 2018. It would be really interesting to visualize whether were able to replenish ground water this year after all the precipitation. The adopted Plan addresses water quality issues affecting the ecosystem and fisheries of the Bay-Delta system. Long-term values for reservoir inflows use maximum number of complete water years in record. https://waterdata.usgs.gov/monitoring-location/11275500/#parameterCode=00054&period=P7D. 2022 All Rights Reserved. Greetings from Mount Laurel New Jersey. Could you also show each reservoirs level as a function of time? construction in the 1920s, various groups have lobbied to restore Should be fixed at some point. 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 dam and reservoir are the source for the Hetch Hetchy Aqueduct, which provides water for over . The amount stored is increasing, just not by a lot. The captured water is piped 150 miles to the Bay Area. The half-hour drive to Hetch Hetchy from CA Highway 120 begins outside the park boundaries. Find out more about the system at http://www.sfwater.org, BAWSCA Board Policy Committee Meeting, April 12, 2023 1:30pm. What period does CA use for Historical Average? It will be very different depending on the period chosen. Similar findings are described in theUC Davis studyRe-Assembling Hetch HetchyandUS Bureau of Reclamation study. Tracy Barbutes, Freelance / Special to The Chronicle, Heres where California reservoir levels stand after this weeks rains. There doesnt seem to be any site that shows the impact of each storm. 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. That said, most of its outflow makes its way down Feather River (via Rock Creek Reservoir) and ultimately into Orville. Especially for small ones it is hard to identify them and click on them. //this function is called from the javascript from within the iframe after the contents of iframe are loaded (and after an additional 150ms delay) My guess would be that the recent systems have been cold and so they are predominantly dropping snow on the watershed. Add a button to convert the row heights to log scale. However, I am interested in how much we are saving. FYI it looks like Isabella is reading incorrectly, likely because its well above 100%. Wapama Falls (moderate) 5 mi (8 km) round-trip; 2 hours. What happened to the Hetch Hetchy level? Most local reservoir inflow timeseries are too short to calculate long-term values. Hetchy refers to a valley in the Sierra Nevada and a reservoir that Trinity Lake, with a capacity of 2,447,650 acre-feet, had the smallest increase, from 29% in December to 30% in January. It certainly looks dry at least until the last week in February, he said. 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. Great Job on this site! And more work is underway. Although Hetch Hetchy Reservoir is the most well-known, it stores less than 25% of the system's water. ) or https:// means youve safely connected to the .gov website. https://cdec.water.ca.gov/dynamicapp/QueryDaily?s=HTH 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. not passed until 1928 five years after the dam was built. 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. 2013, photo, the Hetch Hetchy Reservoir is hazy with smoke . Thanks for putting this together. I previously made a bar graph showing the overall level of water in the major California reservoirs. We provide water directly to customers in San Francisco and wholesale through 26 Water agencies in Alameda, Santa Clara, and San Mateo counties. Construction of the regional water system proceeded over the following 20 years, with water first delivered in 1934. Los Angeles,Orange CountyandSan Josehave developed ambitious water recycling programs and have vastly improved local groundwater management. So many facets beautifully chartered. Charts from the California Department of Water Resources show conditions at key state reservoirs on Oct. 22 (left) and on Nov. 2 (right). 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. 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. This local water is captured in reservoirs located in San Mateo and Alameda counties. I notice Briones Reservoir is not on the list. 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. Units are in kaf, thousands of acre feet. It was the only tool that I could find that would allow me to make a vertical marimekko graph. Monitoring location 11277500 is associated with a LAKE, RESERVOIR, IMPOUNDMENT in TUOLUMNE COUNTY, CALIFORNIA. 7 days 30 days San Francisco operates three medium-sized hydro-electric power plants in the Tuolumne River watershed Kirkwood, Moccasin, and Holm. "It is unknown how much area of the Feather River and Shasta Lake drainages are impacted by hydrophobic soils.". I will take a look and see if there are other important reservoirs missing and may add them in the future. Monitoring location 11275500 is associated with a LAKE, RESERVOIR, IMPOUNDMENT in TUOLUMNE COUNTY, CALIFORNIA. The water is delivered by a gravity-based system and aqueduct to Even with all the rain and floods, still a long way to fill them to capacity. . The commission plans to decide Nov. 23 whether to formally ask customers to conserve water. At the same time, theyve also said its critical to maintain sufficient water supplies to keep Bay Area communities and its economy running during a prolonged drought. Hetch Hetchy is Monitoring location 11275500. For each of the top 8 reservoirs the storage has increased by a total of 217 kaf, however). Part of the lake is on the California side, but it has zero California water impact beyond the immediate Tahoe residents. 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. . 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. Hoping they start building more reservoirs soon. 501(c)3 organization, federal tax ID #942419885. Lake Mendocino and Lake Berryessa water levels stayed the same. More about the Tuolumne River Voluntary Agreement can be found athttp://www.tuolumnerivermanagementplan.com. The SFPUC hoards water in dry years when they dont need to, said Peter Drekmeier, policy director at the conservation group Tuolumne River Trust. Folsom is like an overflow tank. Shasta, Oroville, Hetch Hetchy and many others were built by damming large rivers. How do I contact support? 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. I have to agree with many people here what a great job making such a clear graph of whats happening. 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. The overall storage is said to have dropped by 57.4 to 56.4 (or 302 kaf). Lock I think the problem is with the CDEC database (as the LakesOnline website also has had incorrectly high information). 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. Thanks for taking the time to do that. To reach Hetch Hetchy, you have to exit Yosemite National Park and re-enter it. Love the dashboard! has a graph which shows how the historical avg changes throughout the year (oscillating between ~15000 and ~21000). Our reservoirs were alarmingly low. The trail includes spectacular views of Tueeulala and Wapama Falls. Your email address will not be published. Also a little nit. Hetch Hetchy is only one of nine reservoirs in the San Francisco Public Utility Commissions water system. 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. 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. best to drain the valley. Voters rejected a 2012 Required fields are marked *. Love easy to read and understand information. John Muir and the The Hetch Hetchy Reservoir in Yosemite delivers water to 2.6 million Bay Area residents every day. 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. 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. Fish and Wildlife Service that provides an immediate $4 million investment for habitat improvements for fisheries in the Tuolumne River. . Maintaining this variety of sources is an important component of our near and long-term water supply management strategy. You can also use it to monitor only the reservoirs you are most interested in. If you look at the inflow data on the major reservoirs, its pretty flat. Restore Hetch Hetchys subsequent appeal to the ruling was Crystal Springs Reservoir, along Highway 280 in San Mateo County, was 89 percent . Great resource! Navigation and Navigable Waters 33.208.82 Hetch Hetchy, Cherry Valley, and Don Pedro Dams and Reservoirs. GNSS2 - Level 2 Quality Survey Grade Global Navigation Satellite System. Kellie Hwang is the newsletter editor for The San Francisco Chronicle. But they'll cost you, Fight at high school basketball game in S.F. 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. System for more than 60 percent of their drinking water. Major snowstorm might leave you stranded, New 101 express lanes opens in Bay Area. The upcountry portion of the System begins with Hetch Hetchy Reservoir in Yosemite National Park. Even with the latest precipitation, Folsoms values was unchanged. According to the SFPUC, the upper reaches of the Tuolumne River have received about 36 inches of rain since the start of the water year in October, almost as much as what the area averages in a year. Hetch Hetchy is the only reservoir above its average storage of 63%, and is 82% full. The BAWSCA agencies are therefore key stakeholders in ensuring the system serves as a reliable source of high quality water. California reservoir levels: . Restore Hetch Hetchy. One acre-foot is the equivalent of one acre of land covered in one foot of water. 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. I wonder why it doesnt work for you. But Sites would be what's called an off-channel . Related articles . But they'll cost you, Fight at high school basketball game in S.F. Article X, Section 2 that requires diversions for all water 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. by the Raker Act. 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Water storage facilities include watersheds, dams, and reservoirs including: Calaveras, San Antonio, Crystal Springs, Pilarcitos, and San Andreas. 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. window.addEventListener("orientationchange", function() { At the moment, I am not interested in the debate. Over the summer, Gov. 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.. Congress had to approve the project because it was
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