The average for this time of year is approximately 4,659.57ft, plus or minus 39ft. mandate within 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. Sacramento CA 95833, Everything about California water that matters, Western States Water Agencies and Districts. I second that request. 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 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.
Good info to know. Heres an example of that data for Shasta, where you can see the daily inflows and outflows: For example, the average storage level for Feb. 7 is usually 65% of capacity for Trinity Dam, but currently its at 31%.
What rates am I paying? River. Similar findings are described in theUC Davis studyRe-Assembling Hetch HetchyandUS Bureau of Reclamation study. proposition that would have funded an $8 million study on how 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. Lock She is also an alumna of Reveal from the Center for Investigative Reporting Investigative Fellowship and The New York Times Student Journalism Institute. The half-hour drive to Hetch Hetchy from CA Highway 120 begins outside the park boundaries. This is wonderful information. San Francisco will be in great shape going into 2023, said Spreck Rosekrans, executive director of Restore Hetch Hetchy Its unfortunate that too little is being done with these flows to recharge groundwater basins to help cities and farms and even restoring Hetch Hetchy Valley., Kurtis Alexander is a San Francisco Chronicle staff writer. It does not meet the California definition of renewable energy. The information on Isabella has been fluctuating drastically (by a factor of 10!) Restoring Hetch Hetchy will require some changes in how San Francisco moves and stores water. It would be really interesting to visualize whether were able to replenish ground water this year after all the precipitation. According to the San Francisco Public Utilities Commission, Hetch Charts from the California Department of Water Resources show conditions at key state reservoirs on Oct. 22 (left) and on Nov. 2 (right). I am new to the state. A lock ( 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 . dam and restoring the valley. Reservoir Report 4,670 ft -0.02% today 100% of normal Normal Water lake or reservoir water surface elevation above ngvd 1929, ft at Cherry Lk Nr Hetch Hetchy Ca is currently 4,670 ft, approximately 100% of normal. https://waterdata.usgs.gov/monitoring-location/11275500/#parameterCode=00054&period=P7D. Major snowstorm might leave you stranded, New 101 express lanes opens in Bay Area. While forecasters can predict the likelihood of future rainfall over large areas, they cant pinpoint it to the degree needed to determine whether a particular watershed/reservoir will overflow and cause damage and loss of life. The trail includes spectacular views of Tueeulala and Wapama Falls. This system encompasses more than 1,250 miles of distribution pipelines, as well as 12 in-City reservoirs and eight water tanks with a total storage capacity of approximately 413 million gallons. The upcountry portion of the System begins with Hetch Hetchy Reservoir in Yosemite National Park. 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. Next feature request: wire in aquifer level data! It was my first time using D3 and it took me a long time to get up to speed. Yep. Over the summer, Gov. Locked padlock Share sensitive information only on official, secure websites. Secure .gov websites use HTTPS For the first week of February, there was a slight increase for most reservoirs from January amounts. O'Shaughnessy Dam was built on the Tuolumne River in 1923 to create Hetch Hetchy Reservoir. Forty-six percent . Its not possible to see or really interact with the tiniest slivers. It is on the graph. The source water from SFPUC is typically from the Hetch Hetchy reservoir located in the Sierra Nevada Mountains. Great Job on this site! Much of the recent inflow was to Hetch Hetchy, which can hold. If we reach 100% after the current rains and then it stops raining for the season, then our percentage will start going down. Great URL. }, false); Lake Tahoe really isnt part of California water, as the outflow goes to Nevada. Maybe bad data. Our flagship blog features analysis of news from our staff and announcements of upcoming events. their water supply would cost hundreds of millions of dollars at Hetchy refers to a valley in the Sierra Nevada and a reservoir that I notice Briones Reservoir is not on the list. Thanks for the link. In fact, thanks to a little snowmelt, water levels were up for all reservoirs from December to January. The citys water system also includes a water bank at Don Pedro Reservoir along the Tuolumne River, which was full as of Feb. 1. 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. For the higher elevations, more of their water comes directly from snowmelt. Department of Water Resources is just another in a long line of completely mismanaged California entities. Hetch Hetchy is one of nine reserviors in a water system that serves San Francisco and other Bay Area communities. Data have been checked by the reporting agency. Usually with warm ARs, you get a dramatic increase in inflow, which can fill even very large reservoirs relatively quickly, like Oroville in 2017. draining the reservoir to court, arguing in 2015 that the rejected by an appellate court and the California Supreme Court If a reservoir gets filled to 100% and more, the dam will break and many cities will get flooded, so the operators are careful. Our reservoirs were alarmingly low. Just trying to learn here Thanks so much! Share sensitive information only on official, secure websites. 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. Water is rapidly flowing into the state's reservoirs. It could be the 180% of historical average of snowpack, which will be melting in a couple months. 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. Crystal Springs Reservoir, along Highway 280 in San Mateo County, was 89 percent . Could you also do the same for the Colorado River reservoirs to see how they are fairing? I dont think its currently above the historical average, not below 1 year ago. This other page: https . In 2016, a Tuolumne County Superior Court judge dismissed the United States. 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. 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). window.addEventListener("orientationchange", function() {
the Bay Area. Interesting. Great visualization Chris! 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. 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%. thanks. California Reservoir Levels - Dashboard and visualization showing current water levels in California reservoirs . David Rizzardo, hydrology section manager for the California Department of Water Resources, said there are a lot of factors that affect reservoir storage. Thank you so much for the hard work! Just in case a large storm hits, that way they dont reach 100% capacity. One gauge in the area has measured 6.12 inches since Oct. 1, which is 899% of normal. Call 209-372-0200 for the latest road and weather conditions, Hetch Hetchy Road Daily Hours: 8 am to 5 pm 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. I like the comparisons of last year, and the historical average. Wapama Falls (moderate) 5 mi (8 km) round-trip; 2 hours. It is also the amount of water in a cube that is 352 feet per side (about the length of a football field). Visualization was done in javascript and specifically the D3.js visualization library. The BAWSCA agencies are therefore key stakeholders in ensuring the system serves as a reliable source of high quality water. Omar, Thanks! There doesnt seem to be any site that shows the impact of each storm. Current conditions of LAKE OR RESERVOIR WATER SURFACE ELEVATION ABOVE NGVD 1929 and RESERVOIR STORAGE are available. I will take a look and see if there are other important reservoirs missing and may add them in the future. Remaining Capacity text in the legend should be brown? Getting There. supplies water to the San Francisco Bay Area. All rights Hetch Hetchy is only one of nine reservoirs in the San Francisco Public Utility Commission's water system. They are releasing water into the canals. The reservoir is eight miles long and the largest single body of water in Yosemite. . Thanks for taking the time to do that. document.getElementById('globes').contentWindow.location.reload();
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. The data on water storage comes from the California Department of Water Resources (DWR) Data Exchange Center. 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. We own and operate the Hetch Hetchy Regional Water System which serves 2.7 million customers. Local reservoir inflows have negative daily flow rates set to zero. And the current water storage amounts are well below the historical averages for this time of year. Even with all the rain and floods, still a long way to fill them to capacity. Is the Stanley Quencher tumbler worth its TikTok hype? City officials have touted their efforts to help salmon, for example by timing water releases to assist with migration and restoring breeding grounds. reloadiframes();
do so. Emissions must be offset by dedicated conservation programs or renewable energy generation such as wind or solar. Hours: Year-round, but only accessible by car when the Hetch Hetchy Road is open. She is a University of Washington graduate. 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. California drought: Charts show where reservoir levels stand after a dry January, Track water shortages and restrictions across Bay Area. 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. Read more about the data team and their work. In the year prior to Oroville reaching capacity the interactive chart showed the rate of inflow over time. For example, Hetch Hetchy Reservoir in Yosemite National Park provides 85 percent of San Francisco's total water needs. But I would never have imagined how to put all the important information into a single plot. Thanks for the prompt reply! Greetings from Mount Laurel New Jersey. The Hetch Hetchy Reservoir that supplies San Francisco, seen here in February, is among those that have refilled after two months of storms. Hetch Hetchy Reservoir in Yosemite National Park is seen in 2022. Its essential to understand that the dispute over San Franciscos use of Hetch Hetchy is not about the use of water only how it is stored. 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. A lock ( She was previously an engagement reporter. As of Feb. 1, the systems total water storage was just over 1.3 million acre-feet, or about 92% of capacity. Another not monitored by the State? 1 covering up to $875 million and much of the rest coming from federal loans to water suppliers. Lake Oroville. How do I contact support? 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. I was thinking that it would be interesting to compare inflows and outflows. Awesome work!! Part of the lake is on the California side, but it has zero California water impact beyond the immediate Tahoe residents. An official website of the United States government. Water data back to 1930 are available online. San Francisco voters have demonstrated their opposition to Then it has the appearance of something filling up, while still providing all the detail. 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. San Francisco operates three medium-sized hydro-electric power plants in the Tuolumne River watershed Kirkwood, Moccasin, and Holm. The amount stored is increasing, just not by a lot. Trailhead address: Evergreen Road (Hetch Hetchy Road), Yosemite National Park, CA 95321. The Bay Area transmission system also includes Irvington Tunnel 1 and Tunnel 2, the Bay Tunnel, and the Crystal Springs Bypass Tunnel. The advocacy group Restore Hetch Hetchy took its case for Copyright Barry Rokeach, 2014. 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. 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. Super frustrating. 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. The area around Shasta has more volcanic soils that absorb rainfall than the Feather River drainage. Arg. I do not see Diamond Valley Lake Resevoir on this page. Even with the latest precipitation, Folsoms values was unchanged. San Franciscos water system, which includes Hetchy Hetchy, is expected to fill this winter for the first time since 2019. Ive been meaning to search for aquifer levels. James Q. Martin / Restore Hetch Hetchy Show More Show Less 4 of 7 Assistant General Manager for Water Steven Ritchie credits the way the system is managed along with lower. Isabella is filling quite slowly in order to test out the new $500 million spillway. 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. An official website of the United States government. I previously made a bar graph showing the overall level of water in the major California reservoirs. But they'll cost you, Fight at high school basketball game in S.F. How can I apply to SFPUC? All of this work is nothing short of brilliant. The blue line indicates the reservoirs water level one year ago today. System for more than 60 percent of their drinking water. 2151 River Plaza Drive, Suite 205 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. Sometimes this is well done sometimes it is poorly done. 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. globe = document.getElementById('mekko');
They also built a spillway that was too steep and did not install energy dissipators along the spillway. Are they releasing water to relieve the pressure in anticipation of more 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. And early forecasts show the rest of the wet season is not likely to produce enough precipitation. You can find the charts below from the California Department of Water Resources website. Folsom Lake is letting the water flow out. Great stuff. Is it because the laws have changed on how much each reservoir can hold or is it in anticipation of significantly more rain? scenic mountain valley in a national park. Lots of possibilities, just curious. 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. generates electricity for the city). Its currently listed on this page as 29kaf full, but the usgs.gov page below says Hetch Hetchy is at 299.7kaf full. "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. Hetch Hetchy Reservoir in Yosemite was 69 percent full on Tuesday, 150 percent of normal for this time of year. A different story is unfolding at Hetch Hetchy reservoir in Yosemite National Park, where water is being released to conserve and restore wildlife. In 2021, the SFPUC and the Modesto and Turlock Irrigation Districts launched a proactive pilot program with the U.S. 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. After the reservoirs 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 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. I appreciate the information you are providing. If you look at the inflow data on the major reservoirs, its pretty flat. Congress had to approve the project because it was
Have you looked into that side of the water management equation? I had a class in spillway design many years ago. 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. Delivery rates are 7-day average values. More about the Tuolumne River Voluntary Agreement can be found athttp://www.tuolumnerivermanagementplan.com. 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. During most years, there will be a 30-day shut down of the Hetch Hetchy source in the winter months. I recently joined the team with Restore Hetch Hetchy as Engagement & Development Director. In Yosemite National Park, the Hetch Hetchy reservoir relies. The trail takes you to the base of Wapama Falls, passing two smaller waterfalls (during spring) on the way. "It was a very healthy shot in the arm. 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.
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