Meant this comment for the integrated snowpack and reservoir view. Getting There. The group says the recent plethora of water shows that the city could do without Hetch Hetchy Reservoir, by using other storage facilities that have filled and pursuing new projects to capture the surplus. BAWSCA Board of Directors Meeting, March 16, 2023, 6:30 PM. rejected by an appellate court and the California Supreme Court 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. located in a national park and it passed the Raker Act in 1913 to After record snowfall in December was followed by a dry January, there are renewed concerns of drought. . 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. Units are in kaf, thousands of acre feet. since it required flooding a United States. 2151 River Plaza Drive, Suite 205 Privacy Policy | 2011-2021 San Francisco Public Utilities Commission. The upcountry portion of the System begins with Hetch Hetchy Reservoir in Yosemite National Park. Flood control agencies (not DWR) have the most say in regard to releases. and its snowmelt-fed water supply, water from Hetch Hetchy An official website of the United States government. My guess would be that the recent systems have been cold and so they are predominantly dropping snow on the watershed. It certainly looks dry at least until the last week in February, he said. do so. https://cdec.water.ca.gov/dynamicapp/QueryDaily?s=HTH Francisco Public Utilities Commissions 26 wholesale customers Even with the latest precipitation, Folsoms values was unchanged. Within San Francisco, we manage water distribution in the City. 2022 All Rights Reserved. Locked padlock This other page: https . I realize there we dont want to reservoirs overflowing, but why are we still below historical average? the issue, including those under Franklin Delano Roosevelt, This other page: 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. Your Privacy Choices (Opt Out of Sale/Targeted Ads). How Much Water is in California Reservoirs? All rights reserved. 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 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. Ive been meaning to search for aquifer levels. She has been with SFGATE for more than 10 years. Los Angeles,Orange CountyandSan Josehave developed ambitious water recycling programs and have vastly improved local groundwater management. 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. A 1 week change would be interesting to show on each. San Franciscos water-bank in Don Pedro Reservoir, downstream on the Tuolumne River, holds twice as much water as Hetch Hetchy. 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. construction in the 1920s, various groups have lobbied to restore Your tools are awesome just hurts when you receive bad data at times! Just in case a large storm hits, that way they dont reach 100% capacity. 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. Yoohyun Jung is the Deputy Data Editor for The San Francisco Chronicle. best to drain the valley. Although Hetch Hetchy Reservoir is the most well-known, it stores less than 25% of the systems water. This is the best one out there. Wapama Falls (moderate) 5 mi (8 km) round-trip; 2 hours. Great URL. The height of the row indicates how much water the reservoir could hold. For the higher elevations, more of their water comes directly from snowmelt. Great visualization Chris! Monitoring location 11275500 is associated with a LAKE, RESERVOIR, IMPOUNDMENT in TUOLUMNE COUNTY, CALIFORNIA. This is an excellent tool you have put together. Hetch Hetchy Regional Water System, which serves San Francisco, mandate within The soaking was welcome in a drought-plagued state with a diminishing water supply. How come the totals disagree with the cal map graphic? Its fluctuating between ~107% and ~20% from one hour to the next (reading 107.6 atm). 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. 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 . After the reservoirs The reservoir is now projected to cost $4.4 billion, with Prop. In another sign that Californias drought is easing, San Francisco captured more than a years worth of water in just one months time. Great graphs and very useful. It is also the amount of water in a cube that is 352 feet per side (about the length of a football field). Californias snowpack slips below average after dismally dry January, renewing concerns about drought, Busting water limits wont cost you in Marin County: Penalties canceled as rain fills reservoirs, California snowpack hits highest level this century for March. In fact, thanks to a little snowmelt, water levels were up for all reservoirs from December to January. 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. A truly excellent project. This is wonderful information. Data and Tools A .gov website belongs to an official government organization in the Take CA Highway 120 from the park toward Groveland. Theyve also seen drought surcharges on their water bills. Commission. The current power produced by the SFPUC system, although not carbon-based, is not green since it requires the continued destruction of significant habitat. 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. 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. Here's what that means. Could you also do the same for the Colorado River reservoirs to see how they are fairing? If you look at the inflow data on the major reservoirs, its pretty flat. Share sensitive information only on official, secure websites. Have you looked into that side of the water management equation? The data on water storage comes from the California Department of Water Resources (DWR) Data Exchange Center. Its supposed to be brown. Amy Graff is the news editor for SFGATE. Lake Almanor isnt controlled by DWR for flood/supply. Thats just another very strong indication visually that its a big water year.. pertained to water that was wasted, and there was no claim that window.addEventListener("orientationchange", function() { It used to be full (and beyond). The citys water system also includes a water bank at Don Pedro Reservoir along the Tuolumne River, which was full as of Feb. 1. }, 150); Required fields are marked *. It didnt end the drought, but it was definitely really good," said Ritchie. Lots of possibilities, just curious. Thank you so much for the hard work! The Hetch Hetchy reservoir, which supplies water for San Francisco and other parts of the Bay Area, was at 77% of its 360,000-acre-feet storage capacity in January compared to 73% in December, and on Feb. 7, it was up to 82%. For example, the average storage level for Feb. 7 is usually 65% of capacity for Trinity Dam, but currently its at 31%. So while that is kind of good news, he said, things start to look more grim after January produced paltry rainfall and, so far, February has also been dry. Maybe just acre/ft with ^ or down arrow. Stay up-to-date with breaking news and upcoming events. From the main road, it's about a 20- to 25-minute drive to the parking area. The Hetch Hetchy Reservoir that supplies San Francisco, seen here in February, is among those that have refilled after two months of storms. proposed as a source of water following the 1906 San Francisco The reservoir is eight miles long and the largest single body of water in Yosemite. Hetch Hetchy Reservoir in Yosemite was 69 percent full on Tuesday, 150 percent of normal for this time of year. It was the only tool that I could find that would allow me to make a vertical marimekko graph. That puts it at 84 percent of where it would usually be usually at this time of year. Next feature request: wire in aquifer level data! Quite an eye opener. Our flagship blog features analysis of news from our staff and announcements of upcoming events. Click here for the SFPUC's 2020State of the Regional Water System Report. 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.. In 2007, the Bush 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. 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. 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). "It was a very healthy shot in the arm. Hetch Hetchy Level before the storm: 3,729.68 feet Level after the storm: 3,750.99 feet Total rise: 21.31 feet Storage before the storm: 221,500 acre-feet Storage after the storm: 257,800. 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. There doesnt seem to be any site that shows the impact of each storm. Hetchy refers to a valley in the Sierra Nevada and a reservoir that Forty-six percent . How do I pay my bill? scenic mountain valley in a national park. Prior to The Chronicle, she worked as a data journalist for Honolulu Civil Beat, a watchdog news organization covering the Hawaiian islands. Hetch Hetchy is only one of nine reservoirs in the San Francisco Public Utility Commissions water system. Im curious: Lk Almanor is the 8th largest reservoir in CA. 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. setTimeout(function (){ One of the big challenges in water management is controling the release. Remember, much of the state is still in a drought and so the prudence is warranted.. Water data back to 1930 are available online. the city wastes water, so it was a moot issue. Lake Oroville. 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. Our reservoirs were alarmingly low. https://cdec.water.ca.gov/dynamicapp/QueryDaily?s=SHA UPDATE: Here's where California reservoir levels stand after this week's rains. The information on Isabella has been fluctuating drastically (by a factor of 10!) They have restoredMono Lake,improved stream flows on the North Coast and in theCentral Valleyand diminished the threat to native fish in the Bay Delta. Love this. Great work. Instructions: Could you also show each reservoirs level as a function of time? Historical average is near unattainable these days. This chart only shows reservoirs filled via natural flow/rainfall. diversion of water? Restore Hetch Hetchy claimed the phrase had If you are on a mobile device you can tap the reservoir to get that same info. It takes a fair amount of work to make graphs compared to other more plug-and-play libraries but its very customizable, which is a plus. a broad meaning that had been previously applied in an Trailhead coordinates: 37.946905, -119.787376 (37 56 48.85N 119 47 14.55W) 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. Different presidential administrations also have tried to address Current conditions of LAKE OR RESERVOIR WATER SURFACE ELEVATION ABOVE NGVD 1929 and RESERVOIR STORAGE are available. City officials have touted their efforts to help salmon, for example by timing water releases to assist with migration and restoring breeding grounds. 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. 95 percent of. San Franciscos Hetch Hetchy water system is almost full for the first time in years. https://engaging-data.com/ca-reservoir-level/ If a reservoir gets filled to 100% and more, the dam will break and many cities will get flooded, so the operators are careful. The trail includes spectacular views of Tueeulala and Wapama Falls. I find myself coming back to this every few days to check on our water . Hoping they start building more reservoirs soon. 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. http://www.tuolumnerivermanagementplan.com. During most years, there will be a 30-day shut down of the Hetch Hetchy source in the winter months. James Q. Martin / Restore Hetch Hetchy Show More Show Less 4 of 7 the Hetch Hetchy Valley to its natural state. 1 covering up to $875 million and much of the rest coming from federal loans to water suppliers. Its not possible to see or really interact with the tiniest slivers. Lock Should be fixed at some point. The source water from SFPUC is typically from the Hetch Hetchy reservoir located in the Sierra Nevada Mountains. This is a very clear graph and I cannot imagine the hours you have put in while setting it up and doing the maintenance. Monitoring location 11277500 is associated with a LAKE, RESERVOIR, IMPOUNDMENT in TUOLUMNE COUNTY, CALIFORNIA. Kurtis Alexander is an enterprise reporter for The San Francisco Chronicle, with a focus on natural resources and the environment. Usually with warm ARs, you get a dramatic increase in inflow, which can fill even very large reservoirs relatively quickly, like Oroville in 2017. Curt, Good point re the colder weather dropping more snow instead of rain at higher elevations this year. Its just small enough that the name doesnt appear as the bar is too thin. Share sensitive information only on official, secure websites. I previously made a bar graph showing the overall level of water in the major California reservoirs. Is that from melting snow and rain water coming from the mountains and filling it up? https://waterdata.usgs.gov/monitoring-location/11275500/#parameterCode=00054&period=P7D. GNSS2 - Level 2 Quality Survey Grade Global Navigation Satellite System. 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. A diverse mix of sources protects us from potential disruptions due to emergencies or natural disasters, provides resiliency during periods of drought, and helps us ensure a long-term, sustainable water supply as we address issues such as climate uncertainty, regulatory changes and population growth. In Yosemite National Park, the Hetch Hetchy reservoir relies. FYI it looks like Isabella is reading incorrectly, likely because its well above 100%. Kellie has held many leadership roles for the Asian American Journalists Association, including most recently a board member for the San Francisco chapter. mobilewarn(); So its volume is counted as Orville inflow. Born in Seoul, Yoohyun began her career in Arizona, where she worked for two of the state's largest newspapers covering various beats, including criminal justice and education. I will take a look and see if there are other important reservoirs missing and may add them in the future. I recently joined the team with Restore Hetch Hetchy as Engagement & Development Director. Lake Shasta and Mendocino are also well below average. has a graph which shows how the historical avg changes throughout the year (oscillating between ~15000 and ~21000). Folsom is like an overflow tank. The middle portion of the watershed from New Don Pedro Reservoir to above Hetch Hetchy Reservoir is characterized by deep canyons and forested terrain. What happened to the Hetch Hetchy level? 7 days 30 days Hetch Hetchy water travels 160 miles via gravity from Yosemite to the San Francisco Bay Area. Upcountry and the Bay Area. All rights Absolutely zero reason to be releasing this much water from these reservoirs. ", The difference in soil type in the two watersheds was likely another factor. For example, Hetch Hetchy Reservoir in Yosemite National Park provides 85 percent of San Francisco's total water needs. Another not monitored by the State? Really appreciate the work you did to build this graph. Occasionally the source water will shift to local reservoirs during routine maintenance to the conveyance system. The SFPUC has also raised concerns over the fishery benefits of the States Plan. Generation at Holm powerhouse below Cherry Lake would be less affected. 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. provides water to 2.7 million residents and businesses in the San California reservoir levels: . 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. This almost happened with the Orville Dam in 2017. Trinity Lake, with a capacity of 2,447,650 acre-feet, had the smallest increase, from 29% in December to 30% in January. Locked padlock 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? Article X, Section 2 that requires diversions for all water This website along with another shows that Eastmans level is still rising even though we have not had rain in more than a week. 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. No it is correct. Francisco Bay Area. Hetch Hetchy is one of nine reserviors in a water system that serves San Francisco and other Bay Area communities. While constructed and owned by San Francisco, the water system was in fact planned to benefit the greater San Francisco Bay Area population. Copyright 2023Water Education Foundation. 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. In addition, San Francisco receives approximately one-tenth of its power from hydroelectricity generated by the gravity-driven flow from the Hetch Hetchy Reservoir. required on whether to demolish OShaughnessy Dam. YTD values are from January 1 . reloadiframes(); It used to be full (and beyond). California Reservoir Levels - Dashboard and visualization showing current water levels in California reservoirs . That said, most of its outflow makes its way down Feather River (via Rock Creek Reservoir) and ultimately into Orville. For some strange unknown reason, they are not allowing the lake to fill up. The water is delivered by a gravity-based system and aqueduct to Lock 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? 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. 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. 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. over the past few days. The SFPUC has voiced concerns with the Plan, as it would dramatically reduce the agencys water supply, leaving it subject to significant rationing in droughts and more extreme weather conditions brought on by climate change. This local water is captured in reservoirs located in San Mateo and Alameda counties. For perspective, water demand across the SFPUCs service area of 2.7 million people was about 205,000 acre-feet last fiscal year. Nate, thanks for the insight. 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. If we reach 100% after the current rains and then it stops raining for the season, then our percentage will start going down. Northern California's reservoir levels continued to rise in the week after an atmospheric river slammed the state with torrential rain and high winds. The overall storage is said to have dropped by 57.4 to 56.4 (or 302 kaf). This dashboard provides a bit more detail on the state of each of the reservoirs while also showing an aggregate total. It seems likely one of those two readings is wrong. But Sites would be what's called an off-channel . Thank you for the time and effort in creating the graphs. They also built a spillway that was too steep and did not install energy dissipators along the spillway. 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. A .gov website belongs to an official government organization in the Great Job on this site! 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. Yep. Read more about the data team and their work. But the growing water reserves dont please everyone. You can find the charts below from the California Department of Water Resources website. Official websites use .gov Kellie Hwang is the newsletter editor for The San Francisco Chronicle. 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.". Is that a good thing? Only modest new supplies would be required in the driest years. Turn right on to Hetch Hetchy Road - Evergreen Road and continue another 7.5 miles to the parking area for Hetchy Hetchy Reservoir next to the dam. 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. Maybe bad data. Why is Lake Nacimiento and Lake San Antonio not listed? It updates hourly using data from the California Department of Water Resources (DWR) website, giving an up-to-date picture of California reservoir levels. 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. 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. He frequently writes about water, wildfire, climate and the American West. I love this this site too. Best of luck out there in California! I wonder why it doesnt work for you. Water data back to 1956 are available online. Find out more about the system at http://www.sfwater.org, BAWSCA Board Policy Committee Meeting, April 12, 2023 1:30pm. Congress had to approve the project because it was BAWSCA agencies advocated for the capital improvement program that was adopted by the SFPUC in 2002, and are actively monitoring its implementation. Major snowstorm might leave you stranded, New 101 express lanes opens in Bay Area. Thats enough to supply the citys service area for perhaps seven years. But they'll cost you, Fight at high school basketball game in S.F. 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. 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. What rates am I paying? LK ELEANOR NR HETCH HETCHY CA. Reservoir behind OShaughnessy Dam does not require filtration. HETCH HETCHY RES A HETCH HETCHY CA. Lake Mendocino and Lake Berryessa water levels stayed the same. 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. 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. Its great seeing all the reservoirs in California at or near historical averages. During the winter months, they let water out of the reservoirs in anticipation of large storms.
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