"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. For perspective, water demand across the SFPUC's service area of 2.7 million people was about 205,000 acre-feet last fiscal year. Read more about the data team and their work. Thanks for the link. There doesnt seem to be any site that shows the impact of each storm. ", The difference in soil type in the two watersheds was likely another factor. If a reservoir gets filled to 100% and more, the dam will break and many cities will get flooded, so the operators are careful. Hetch Hetchy Reservoir in Yosemite was 69 percent full on Tuesday, 150 percent of normal for this time of year. There is something strange about the data over the last two days (Jan.17 to Jan. 19): Our reservoirs were alarmingly low. has a graph which shows how the historical avg changes throughout the year (oscillating between ~15000 and ~21000). a minimum, according to the San Francisco Public Utilities 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. The soaking was welcome in a drought-plagued state with a diminishing water supply. Lake Almanor isnt controlled by DWR for flood/supply. United States. Kudos to the designers. I dont know if weve seen anything like this in October before.". Hetchy Reservoir can store as much as 117 billion gallons for the The maximum that the city has put away is 570,000 acre-feet of water. It was the only tool that I could find that would allow me to make a vertical marimekko graph. Thanks for developing it, and for sharing it with the rest of us! Current conditions of LAKE OR RESERVOIR WATER SURFACE ELEVATION ABOVE NGVD 1929 and RESERVOIR STORAGE are available. 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. The remaining 15 percent of water comes from runoff in the Alameda and Peninsula watersheds. California reservoir levels: . I second that request. the city wastes water, so it was a moot issue. Emissions must be offset by dedicated conservation programs or renewable energy generation such as wind or solar. United States. document.getElementById('globes').contentWindow.location.reload(); Hetch Hetchy Regional Water System, which serves San Francisco, An official website of the United States government. I also added the ability to select specific reservoirs to display on the graph and share a custom URL which will point those selected reservoirs (click on list button on top right of dashboard). ) or https:// means youve safely connected to the .gov website. One of the big challenges in water management is controling the release. Your Privacy Choices (Opt Out of Sale/Targeted Ads). 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. Data have been checked by the reporting agency. Amy Graff is the news editor for SFGATE. 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. Great visualization Chris! 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. 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. After record snowfall in December was followed by a dry January, there are renewed concerns of drought. Hi Keith, you could de-select the large reservoirs from the menu at the top right. Great work. Although Hetch Hetchy Reservoir is the most well-known, it stores less than 25% of the system's water. "It's an increase of a few percent, . This is my first year watching the levels, so maybe Im missing something. The adopted Plan addresses water quality issues affecting the ecosystem and fisheries of the Bay-Delta system. It has no natural inflow or out flow. rejected by an appellate court and the California Supreme Court located in a national park and it passed the Raker Act in 1913 to The height of the row indicates how much water the reservoir could hold. Hetch Hetchy is the only reservoir above its average storage of 63%, and is 82% full. The citys water system also includes a water bank at Don Pedro Reservoir along the Tuolumne River, which was full as of Feb. 1. 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 Monitoring location 11277200 is associated with a LAKE, RESERVOIR, IMPOUNDMENT in TUOLUMNE COUNTY, CALIFORNIA. I think the problem is with the CDEC database (as the LakesOnline website also has had incorrectly high information). BAWSCA agencies advocated for the capital improvement program that was adopted by the SFPUC in 2002, and are actively monitoring its implementation. Los Angeles,Orange CountyandSan Josehave developed ambitious water recycling programs and have vastly improved local groundwater management. "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. I love this this site too. 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. Article X, Section 2 that requires diversions for all water earthquake. 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. What rates am I paying? Department of Water Resources is just another in a long line of completely mismanaged California entities. Water data back to 1930 are available online. a broad meaning that had been previously applied in an 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. Hoping they start building more reservoirs soon. Id only be interested in the totals from Oroville and Shasta. 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. Remember, much of the state is still in a drought and so the prudence is warranted.. The construction of the Hetch Hetchy Railroad took place from 1915 to 1918. diversion of water? Restore Hetch Hetchy claimed the phrase had 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. Nice! 95 percent of. This is wonderful information. The BAWSCA agencies are therefore key stakeholders in ensuring the system serves as a reliable source of high quality water. This was helpful to project seasonal trends & storm impacts. Meant this comment for the integrated snowpack and reservoir view. It was at 60 percent as of March 1 and rising, according to the Bureau of Reclamation. their water supply would cost hundreds of millions of dollars at I will take a look and see if there are other important reservoirs missing and may add them in the future. 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? Then it has the appearance of something filling up, while still providing all the detail. March 12 - The Perks of California Native Wildflowers, March 28 - Rainwater Harvesting and Rain Gardens, April 01 - Lawn Conversion to Native and Drought-Tolerant Plants. California snowpack hits highest level this century for March. Trailhead address: Evergreen Road (Hetch Hetchy Road), Yosemite National Park, CA 95321. They placed a few dissipators just before the river. 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. Wapama Falls (moderate) 5 mi (8 km) round-trip; 2 hours. 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. This is a great and very thoughtfully designed web site! The valley is System for more than 60 percent of their drinking water. For example, the average storage level for Feb. 7 is usually 65% of capacity for Trinity Dam, but currently its at 31%. So included in DWR #S. Therefore flood control agencies take the more conservative route and order the release of water. and its snowmelt-fed water supply, water from Hetch Hetchy Current conditions of LAKE OR RESERVOIR WATER SURFACE ELEVATION ABOVE NGVD 1929 and RESERVOIR STORAGE are available. After the reservoirs Kurtis Alexander is an enterprise reporter for The San Francisco Chronicle, with a focus on natural resources and the environment. There are no alerts at this time. Francisco Public Utilities Commissions 26 wholesale customers 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. Great Job on this site! Trailhead coordinates: 37.946905, -119.787376 (37 56 48.85N 119 47 14.55W) May 24, 2022 - BAWSCA Statement About the Adoption of a Systemwide Water Use Reduction of 11%. Share sensitive information only on official, secure websites. 1 covering up to $875 million and much of the rest coming from federal loans to water suppliers. This website along with another shows that Eastmans level is still rising even though we have not had rain in more than a week. In Yosemite National Park, the Hetch Hetchy reservoir relies. John Muir and the 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. My guess would be that the recent systems have been cold and so they are predominantly dropping snow on the watershed. Hetchy refers to a valley in the Sierra Nevada and a reservoir that 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. San Francisco voters have demonstrated their opposition to 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. James Q. Martin / Restore Hetch Hetchy Show More Show Less 4 of 7 You dont see runoff right away, the snow is still up there, frozen, doing what we want it to do, he said. 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). This is a marimekko (or mekko) graph which may take some time to understand if you arent used to seeing them. Share sensitive information only on official, secure websites. 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 trail takes you to the base of Wapama Falls, passing two smaller waterfalls (during spring) on the way. Really appreciate the work you did to build this graph. In 2007, the Bush This other page: I previously made a bar graph showing the overall level of water in the major California reservoirs. Lake Oroville. Not only does it supply 85 percent of the water for 2.6 million people in San Francisco, controlled releases via the O'Shaughnessy Dam are helping preserve downstream specieseven in dry . 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. San Francisco's water-bank in Don Pedro Reservoir, downstream on the Tuolumne River, holds twice as much water as Hetch Hetchy. A separate vote would have been Good info to know. A lock ( 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. Arg. Should be fixed at some point. 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.. The San Francisco Public Utilities Commission is involved in on-going negotiations with the State on a voluntary agreement for implementation of the Bay-Delta Plan, which calls for large increases in water releases on the tributaries to the San Joaquin River, a major tributary to the Bay-Delta. 2151 River Plaza Drive, Suite 205 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. thanks. That includes the Tuolumne River, which provides water via Hetch Hetchy Reservoir to Bay Area customers. Awesome work!! Californias largest water agencies, in both the urban and agricultural sectors, have invested in ambitious groundwater banking programs inKern County. Navigation and Navigable Waters 33.208.82 Hetch Hetchy, Cherry Valley, and Don Pedro Dams and Reservoirs. This site is a great tool, especially as we try to climb out of these drought years. It certainly looks dry at least until the last week in February, he said. Similar findings are described in theUC Davis studyRe-Assembling Hetch HetchyandUS Bureau of Reclamation study. Assistant General Manager for Water Steven Ritchie credits the way the system is managed along with lower. Trinity Lake, with a capacity of 2,447,650 acre-feet, had the smallest increase, from 29% in December to 30% in January. 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. https://cdec.water.ca.gov/dynamicapp/QueryDaily?s=SHA 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. Shasta is the reservoir with the largest capacity and so it is the tallest row. Here's what that means. 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. . It looks like the red and blue lines are backwards on Folsom. Find out more about the system at http://www.sfwater.org, BAWSCA Board Policy Committee Meeting, April 12, 2023 1:30pm. Lake Mendocino, which has a capacity of 122,400 acre feet, saw the biggest boost from 17% of storage capacity in December to 35% in January. Official websites use .gov 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 Hetch Hetchy Valley to its natural state. Add a button to convert the row heights to log scale. How can I match up other monitoring locations similar to the ones on this Interactive Dashboard? Hetch Hetchy is only one of nine reservoirs in the San Francisco Public Utility Commission's water system. In another sign that Californias drought is easing, San Francisco captured more than a years worth of water in just one months time. With modest additional investments San Francisco will be able to maintain an uninterrupted supply of high quality Tuolumne River water. resizeframe(); 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. Maybe just acre/ft with ^ or down arrow. I had a class in spillway design many years ago. This dashboard provides a bit more detail on the state of each of the reservoirs while also showing an aggregate total. That said, most of its outflow makes its way down Feather River (via Rock Creek Reservoir) and ultimately into Orville. https://cdec.water.ca.gov/dynamicapp/QueryDaily?s=HTH Park visitors walk across OShaughnessy Dam in Yosemite National Park on Sept. 1. Visualization was done in javascript and specifically the D3.js visualization library. O'Shaughnessy Dam was built on the Tuolumne River in 1923 to create Hetch Hetchy Reservoir. Heres where California reservoir levels stand after this weeks rains. Hetch Hetchy is only one of nine reservoirs in the San Francisco Public Utility Commissions water system. environmental context. The half-hour drive to Hetch Hetchy from CA Highway 120 begins outside the park boundaries. In 2016, a Tuolumne County Superior Court judge dismissed the Reservoir behind OShaughnessy Dam does not require filtration. 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. Wonderful site. The 1913 Raker Act authorized the unprecedented dam inside the park and also set the fee that the city pays to rent the entire valley in which the dam sits: $30,000 per year. How Fast Are California Reservoirs Filling Up? Required fields are marked *. by the Raker Act. drained by the Tuolumne pertained to water that was wasted, and there was no claim that 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. Lake Mendocino and Lake Berryessa water levels stayed the same. The water travels through a series of pipelines before it reaches the Bay Area and blends with five local reservoirs. 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. 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. scenic mountain valley in a national park. I live in the central valley. And while one storm didn't come close to ending the drought, some reservoirs in Northern California, especially those that fell right in the path of the storm, saw significant gains. best to drain the valley. San Franciscos water system, which includes Hetchy Hetchy, is expected to fill this winter for the first time since 2019. 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. Omar, Thanks! function resizeframe(){ 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. I would like to make one small suggestion:. Why is Lake Nacimiento and Lake San Antonio not listed? P.S. 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 current power produced by the SFPUC system, although not carbon-based, is not green since it requires the continued destruction of significant habitat.

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