. YTD values are from January 1 . 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. 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. For example, the average storage level for Feb. 7 is usually 65% of capacity for Trinity Dam, but currently its at 31%. 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. Fish and Wildlife Service that provides an immediate $4 million investment for habitat improvements for fisheries in the Tuolumne River. 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? 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. 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. "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. Hours: Year-round, but only accessible by car when the Hetch Hetchy Road is open. the city wastes water, so it was a moot issue. dam and restoring the valley. 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. February 21, 2023 - BAWSCA Statement on State Water Resources Control Board'sSchedule for Consideration of a Voluntary Agreement for the Tuolumne River. Interesting. "It is unknown how much area of the Feather River and Shasta Lake drainages are impacted by hydrophobic soils.". I second that request. 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. Water data back to 1930 are available online. 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. Awesome work!! Lake Shasta, the state's largest reservoir, rose 2.9 feet and added 31,020 acre-feet of water. Current as of October 03, 2022 | Updated by . Current conditions of LAKE OR RESERVOIR WATER SURFACE ELEVATION ABOVE NAVD 1988, LAKE OR RESERVOIR WATER SURFACE ELEVATION ABOVE NGVD 1929, and RESERVOIR STORAGE are available. Hetchy refers to a valley in the Sierra Nevada and a reservoir that Due to its high-altitude location at 3,900 feet above sea level It seems likely one of those two readings is wrong. 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). Is that from melting snow and rain water coming from the mountains and filling it up? by the Raker Act. Heres where California reservoir levels stand after this weeks rains. Secure .gov websites use HTTPS I was thinking that it would be interesting to compare inflows and outflows. Why is Lake Nacimiento and Lake San Antonio not listed? If we reach 100% after the current rains and then it stops raining for the season, then our percentage will start going down. Most local reservoir inflow timeseries are too short to calculate long-term values. Isabella is filling quite slowly in order to test out the new $500 million spillway. function reloadiframes(){ Thinking more about it. Just trying to learn here Thanks so much! 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. provides water to 2.7 million residents and businesses in the San Hoping they start building more reservoirs soon. It was at 60 percent as of March 1 and rising, according to the Bureau of Reclamation. required on whether to demolish OShaughnessy Dam. I have to agree with many people here what a great job making such a clear graph of whats happening. That includes the Tuolumne River, which provides water via Hetch Hetchy Reservoir to Bay Area customers. 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. Occasionally the source water will shift to local reservoirs during routine maintenance to the conveyance system. Your Privacy Choices (Opt Out of Sale/Targeted Ads). Voters rejected a 2012 } Is it because the laws have changed on how much each reservoir can hold or is it in anticipation of significantly more rain? That puts it at 84 percent of where it would usually be usually at this time of year. Winter weather conditions may cause road closures. While the long-term voluntary agreement work continues, the SFPUC does not want to wait to restore the Tuolumne Rivers ecosystem. This would allow us to see important, but noise-level reservoirs like hetch hetchy. The cities of Burlingame, Hayward, Menlo Park, Palo Alto, Redwood City and San Mateo, along with the Alameda County Water District, were among Bay Area communities whose support was influential in persuading Congress to pass the controversial Act, and President Woodrow Wilson to sign it. A question: the Historical Avg*, is it the value of year-today or natural year? Emissions must be offset by dedicated conservation programs or renewable energy generation such as wind or solar. It is also the amount of water in a cube that is 352 feet per side (about the length of a football field). A .gov website belongs to an official government organization in the Together, the BAWSCA agencies account for two-thirds of water consumption from the system and pay for two-thirds of its upkeep. Only improvement I would suggest is an improvement of the display of the smaller reservoirs so the names are readable. Maintaining this variety of sources is an important component of our near and long-term water supply management strategy. The information on Isabella has been fluctuating drastically (by a factor of 10!) 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. . environmental context. Impounded by O'Shaughnessy 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. Monitoring location 11277500 is associated with a LAKE, RESERVOIR, IMPOUNDMENT in TUOLUMNE COUNTY, CALIFORNIA. There are many very small reservoirs (relative to Shasta) so the bars will be very thin to the point where they are barely a sliver or may not even show up. It has no natural inflow or out flow. Whats going on with the water level at Oroville? But tearing down O'Shaughnessy Dam in order to restore Hetch Hetchy Valley would be a disaster. The trail includes spectacular views of Tueeulala and Wapama Falls. If you are on a mobile device you can tap the reservoir to get that same info. pertained to water that was wasted, and there was no claim that Great URL. Flood control agencies (not DWR) have the most say in regard to releases. Trailhead coordinates: 37.946905, -119.787376 (37 56 48.85N 119 47 14.55W) Congress had to approve the project because it was They placed a few dissipators just before the river. //this function is called from the javascript from within the iframe after the contents of iframe are loaded (and after an additional 150ms delay) 1 covering up to $875 million and much of the rest coming from federal loans to water suppliers. This is wonderful information. Python is used to extract the data from this page hourly and wrangle the data in to a clean format. Although Hetch Hetchy Reservoir is the most well-known, it stores less than 25% of the systems water. A wet December produced ample snowfall, which is still sitting at high elevations. Article X, Section 2 that requires diversions for all water Kurtis Alexander is an enterprise reporter for The San Francisco Chronicle, with a focus on natural resources and the environment. Greetings from Mount Laurel New Jersey. With modest additional investments San Francisco will be able to maintain an uninterrupted supply of high quality Tuolumne River water. The Hetch Hetchy Valley today with the dam seen in the lower right. They also built a spillway that was too steep and did not install energy dissipators along the spillway. Having it here would be great! But the growing water reserves dont please everyone. At times, nearly 90% of the flow of the Tuolumne River is piped off by the SFPUC and other water agencies in the region. Its water supply Hetch Hetchy Reservoir, in the Sierra Nevada is 80% full, . The SFPUC gets the bulk of its water from a network of reservoirs in the central Sierra Nevada that have long altered flows of the Tuolumne River and its tributaries. This is a marimekko (or mekko) graph which may take some time to understand if you arent used to seeing them. Units are in kaf, thousands of acre feet. 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. Compared to the historical snowpack for this time of year, the May 2021 survey shows that we are only 2 to 5 percent of normal. Also, do they provide inflows and outflows for locations? James Q. Martin / Restore Hetch Hetchy Show More Show Less 4 of 7 Navigation and Navigable Waters 33.208.82 Hetch Hetchy, Cherry Valley, and Don Pedro Dams and Reservoirs. Kellie Hwang is the newsletter editor for The San Francisco Chronicle. 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. Thanks for developing it, and for sharing it with the rest of us! Share sensitive information only on official, secure websites. ", The difference in soil type in the two watersheds was likely another factor. Data have been checked by the reporting agency. What happened to the Hetch Hetchy level? An official website of the United States government. This is the best one out there. Great work. I find myself coming back to this every few days to check on our water . For the first week of February, there was a slight increase for most reservoirs from January amounts. Add a button to convert the row heights to log scale. Stay up-to-date with breaking news and upcoming events. Hetch Hetchy Regional Water System, which serves San Francisco, BAWSCA Board of Directors Meeting, March 16, 2023, 6:30 PM. Even with all the rain and floods, still a long way to fill them to capacity. I wonder why it doesnt work for you. proposed as a source of water following the 1906 San Francisco 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.. I have wanted to do exactly this plot for years. The maximum that the city has put away is 570,000 acre-feet of water. and its snowmelt-fed water supply, water from Hetch Hetchy I recently joined the team with Restore Hetch Hetchy as Engagement & Development Director. Official websites use .gov The new 68-mile (109 km) railroad wound its way up the narrow canyon of the Tuolumne River past sharp curves and up steep 4% grades. Its currently listed on this page as 29kaf full, but the usgs.gov page below says Hetch Hetchy is at 299.7kaf full. Monitoring location 11275500 is associated with a LAKE, RESERVOIR, IMPOUNDMENT in TUOLUMNE COUNTY, CALIFORNIA. document.getElementById('globes').contentWindow.location.reload(); 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. Its not possible to see or really interact with the tiniest slivers. Locked padlock Share sensitive information only on official, secure websites. 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. Reservoir levels rising. United States. Remember, much of the state is still in a drought and so the prudence is warranted.. Click here for the SFPUC's 2020State of the Regional Water System Report. Also a little nit. Hetch Hetchy Reservoir in Yosemite National Park is seen in 2022. Email: kellie.hwang@sfchronicle.com, Yoohyun.Jung@sfchronicle.com Twitter: @KellieHwang, @yoohyun_jung. It didnt end the drought, but it was definitely really good," said Ritchie. Your email address will not be published. Curt, Good point re the colder weather dropping more snow instead of rain at higher elevations this year. Another not monitored by the State? All Rights Reserved. For perspective, water demand across the SFPUCs service area of 2.7 million people was about 205,000 acre-feet last fiscal year. 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. Our drinking water comes from a variety of protected sources carefully managed by the SFPUC. rejected by an appellate court and the California Supreme Court Restore Hetch Hetchy. Very nice work. According to the San Francisco Public Utilities Commission, Hetch United States. For example, Hetch Hetchy Reservoir in Yosemite National Park provides 85 percent of San Francisco's total water needs. During most years, there will be a 30-day shut down of the Hetch Hetchy source in the winter months. The state's second-largest reservoir, Lake Oroville in Butte County, saw especially dramatic gains with a 30.4-foot rise in the water level and a 182,625-acre-foot increase in the total amount of water, data posted Tuesday from the California Department of Water Resources showed. Francisco Public Utilities Commissions 26 wholesale customers 95 percent of. It used to be full (and beyond). This is a great and very thoughtfully designed web site! lawsuit, saying Restore Hetch Hetchys arguments were preempted Is the Stanley Quencher tumbler worth its TikTok hype? FYI it looks like Isabella is reading incorrectly, likely because its well above 100%. globe.height = globe.contentWindow.document.body.scrollHeight+40+"px"; I realize there we dont want to reservoirs overflowing, but why are we still below historical average? Tracy Barbutes, Freelance / Special to The Chronicle, Heres where California reservoir levels stand after this weeks rains. 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 . I had a class in spillway design many years ago. Thats enough to supply the citys service area for perhaps seven years. I dont think its currently above the historical average, not below 1 year ago. Trinity Lake, with a capacity of 2,447,650 acre-feet, had the smallest increase, from 29% in December to 30% in January. Sometimes this is well done sometimes it is poorly done. In addition, San Francisco receives approximately one-tenth of its power from hydroelectricity generated by the gravity-driven flow from the Hetch Hetchy Reservoir. Los Angeles,Orange CountyandSan Josehave developed ambitious water recycling programs and have vastly improved local groundwater management. a broad meaning that had been previously applied in an He frequently writes about water, wildfire, climate and the American West. Before returning to the Bay Area, she held roles as transportation reporter and trending news reporter at the IndyStar in Indianapolis. Much of the recent inflow was to Hetch Hetchy, which can hold. I think the problem is with the CDEC database (as the LakesOnline website also has had incorrectly high information). The BAWSCA agencies are therefore key stakeholders in ensuring the system serves as a reliable source of high quality water. The average for this time of year is approximately 4,659.57ft, plus or minus 39ft. What rates am I paying? Draining Hetch Hetchy without depriving Bay Area residents of After record snowfall in December was followed by a dry January, there are renewed concerns of drought. 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. They are releasing water into the canals. Just a wistful thought, it would be really cool to graph the water release statistics. Climbers Timmy O'Neill (left) and Lucho Rivera atop a wall overlooking Hetch Hetchy Reservoir. LK ELEANOR NR HETCH HETCHY CA. Thanks for taking the time to do that. Restore Hetch Hetchy intends to undo this Great American mistake, and return the valley to Yosemite National Park and all people. 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. . 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. and maybe another vertical axis to the right of that with reservoir capacity. So many facets beautifully chartered. It certainly looks dry at least until the last week in February, he said. And more work is underway. The overall storage is said to have dropped by 57.4 to 56.4 (or 302 kaf). The Bay Area transmission system also includes Irvington Tunnel 1 and Tunnel 2, the Bay Tunnel, and the Crystal Springs Bypass Tunnel. There doesnt seem to be any site that shows the impact of each storm. A separate vote would have been maybe label the vertical axis with aggregate total or system total capacity. Next feature request: wire in aquifer level data! In 2016, a Tuolumne County Superior Court judge dismissed the earthquake. Lock 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. 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. She has been with SFGATE for more than 10 years. draining the reservoir to court, arguing in 2015 that the 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? I do not see Diamond Valley Lake Resevoir on this page. 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. A .gov website belongs to an official government organization in the it will be cool if there is a way to track the change since Dec or some such date. San Francisco operates three medium-sized hydro-electric power plants in the Tuolumne River watershed Kirkwood, Moccasin, and Holm. currently, there is a lot more water coming in than going out. Delivery rates are 7-day average values. The name Hetch Hetchy is derived from a Sierra Miwok Therefore flood control agencies take the more conservative route and order the release of water. 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. administration attempted to allocate funds to study removing the San Franciscos Hetch Hetchy water system is almost full for the first time in years. The water transmission system in the Bay Area and Peninsula includes the Bay Division, San Andreas, Sunset Supply, and Crystal Springs pipelines. 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. Didnt realize how bad things were there. has a graph which shows how the historical avg changes throughout the year (oscillating between ~15000 and ~21000). San Francisco voters have demonstrated their opposition to Maybe just acre/ft with ^ or down arrow. Water data back to 1956 are available online. drained by the Tuolumne You can find the charts below from the California Department of Water Resources website. 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. Hetch Hetchy water travels 160 miles via gravity from Yosemite to the San Francisco Bay Area. I believe the spillway was designed by the State. 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). Historical average is near unattainable these days. Great resource! The upcountry portion of the System begins with Hetch Hetchy Reservoir in Yosemite National Park. The current power produced by the SFPUC system, although not carbon-based, is not green since it requires the continued destruction of significant habitat. The reservoir is now projected to cost $4.4 billion, with Prop. The area around Shasta has more volcanic soils that absorb rainfall than the Feather River drainage. Absolutely zero reason to be releasing this much water from these reservoirs. O'Shaughnessy Dam was built on the Tuolumne River in 1923 to create Hetch Hetchy Reservoir. Why is it not listed? That cant be right. 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. The Hetch Hetchy Reservoir that supplies San Francisco, seen here in February, is among those that have refilled after two months of storms. Copyright Barry Rokeach, 2014. 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. supplies water to the San Francisco Bay Area. San Francisco's water-bank in Don Pedro Reservoir, downstream on the Tuolumne River, holds twice as much water as Hetch Hetchy. Thanks for providing it for public information. Usually with warm ARs, you get a dramatic increase in inflow, which can fill even very large reservoirs relatively quickly, like Oroville in 2017. the map graph doesnt include berryessa. } We provide water directly to customers in San Francisco and wholesale through 26 Water agencies in Alameda, Santa Clara, and San Mateo counties. San Francisco maintained the phrase only "It's an increase of a few percent, . The data on water storage comes from the California Department of Water Resources (DWR) Data Exchange Center. More about the Tuolumne River Voluntary Agreement can be found athttp://www.tuolumnerivermanagementplan.com. I am new to the state. . HETCH HETCHY RES A HETCH HETCHY CA. Visualization was done in javascript and specifically the D3.js visualization library. While constructed and owned by San Francisco, the water system was in fact planned to benefit the greater San Francisco Bay Area population. Near the town of La Grange, the river exits the Sierra Nevada foothills and flows through a gently sloping alluvial valley that is incised into Pleistocene alluvial fans. Lots of possibilities, just curious. The water travels through a series of pipelines before it reaches the Bay Area and blends with five local reservoirs. System for more than 60 percent of their drinking water. You dont see runoff right away, the snow is still up there, frozen, doing what we want it to do, he said. Good info to know. The upcountry portion of the System begins with Hetch Hetchy Reservoir in Yosemite National Park. Thank you so much for the hard work! San Franciscos water-bank in Don Pedro Reservoir, downstream on the Tuolumne River, holds twice as much water as Hetch Hetchy. 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. The problem is that we have no idea of knowing ahead of time what kind of storms well have and how long theyll last, but the reservoir operators have to be super careful and extra cautious, so they periodically let the water flow out. 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. She is also an alumna of Reveal from the Center for Investigative Reporting Investigative Fellowship and The New York Times Student Journalism Institute. https://cdec.water.ca.gov/dynamicapp/QueryDaily?s=SHA McClintock bill proposes to improve public access at Hetch Hetchy. Major snowstorm might leave you stranded, New 101 express lanes opens in Bay Area. Ive been meaning to search for aquifer levels. 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. Yep. The height of the row indicates how much water the reservoir could hold. Here's what that means. Its fluctuating between ~107% and ~20% from one hour to the next (reading 107.6 atm). Are they releasing water to relieve the pressure in anticipation of more water? Waterfalls gushed at Hetch Hetchy after an atmospheric river event in October 2021. These sources include surface water stored in reservoirs located in the Sierra Nevada, Alameda County and San Mateo County, and groundwater supplies stored in a deep aquifer located in San Francisco and San Mateo counties. 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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