hetch hetchy reservoir level percentage

It didnt end the drought, but it was definitely really good," said Ritchie. 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. Yes, and why is Twitchell Dam also not listed? United States. The half-hour drive to Hetch Hetchy from CA Highway 120 begins outside the park boundaries. Santa Clara, Alameda and San Mateo counties. Is that a good thing? Within San Francisco, we manage water distribution in the City. Kudos to the designers. Monitoring location 11277500 is associated with a LAKE, RESERVOIR, IMPOUNDMENT in TUOLUMNE COUNTY, CALIFORNIA. "It's an increase of a few percent, . sends student to hospital, Heres how much rain and snow is on the way this weekend, Your Privacy Choices (Opt Out of Sale/Targeted Ads). Amid Drought, Century-Old Fight Over Hetch Hetchy Reservoir Simmers On From the main road, it's about a 20- to 25-minute drive to the parking area. In fact, thanks to a little snowmelt, water levels were up for all reservoirs from December to January. globe = document.getElementById('mekko'); reloadiframes(); Just a wistful thought, it would be really cool to graph the water release statistics. I dont think its currently above the historical average, not below 1 year ago. 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. I think the problem is with the CDEC database (as the LakesOnline website also has had incorrectly high information). GNSS2 - Level 2 Quality Survey Grade Global Navigation Satellite System. reserved. Wonderful site. maybe label the vertical axis with aggregate total or system total capacity. All rights Im curious: Lk Almanor is the 8th largest reservoir in CA. Our drinking water comes from a variety of protected sources carefully managed by the SFPUC. Official websites use .gov 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. . Thank you for a beautiful job. Yep. reservoir violates the California Constitution specifically the 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. it will be cool if there is a way to track the change since Dec or some such date. But they'll cost you, Fight at high school basketball game in S.F. The judge also noted the provision of the state 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. Northern California's reservoir levels continued to rise in the week after an atmospheric river slammed the state with torrential rain and high winds. Thats a great suggestion and one that would be particularly helpful! While the long-term voluntary agreement work continues, the SFPUC does not want to wait to restore the Tuolumne Rivers ecosystem. UPDATE: Here's where California reservoir levels stand after this week's rains. Park visitors walk across OShaughnessy Dam in Yosemite National Park on Sept. 1. 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. James Q. Martin / Restore Hetch Hetchy Show More Show Less 4 of 7 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. She joined the Chronicle as a data reporter in 2021. Its great seeing all the reservoirs in California at or near historical averages. hetch hetchy reservoir level percentage - Examiner . I realize there we dont want to reservoirs overflowing, but why are we still below historical average? Steve Ritchie, the San Francisco Public Utilities Commission's assistant general manager for water, said the additional water amounted to roughly 11% of the reservoir's total capacity. To reach Hetch Hetchy, you have to exit Yosemite National Park and re-enter it. The OShaughnessy Dam i s 300 feet tall only medium-sized by todays standards. Local reservoir inflows have negative daily flow rates set to zero. These sources are diverse in both the origin of the supply snowmelt, rainfall and recharge of groundwater and their location within our system. Over the summer, Gov. Water is such a fascinating topic and Id hate to have to be a water manager making a decision on how much to release to avoid reservoir flooding. Lake Almanor isnt controlled by DWR for flood/supply. use must be reasonable.. And more work is underway. This dashboard provides a bit more detail on the state of each of the reservoirs while also showing an aggregate total. The source water from SFPUC is typically from the Hetch Hetchy reservoir located in the Sierra Nevada Mountains. Its supposed to be brown. The surplus has renewed concerns about San Francisco stockpiling water at the expense of rivers and the fish and wildlife that live there. and its snowmelt-fed water supply, water from Hetch Hetchy A question: the Historical Avg*, is it the value of year-today or natural year? All rights reserved. You can also use it to monitor only the reservoirs you are most interested in. 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. the Hetch Hetchy Valley to its natural state. In another sign that Californias drought is easing, San Francisco captured more than a years worth of water in just one months time. 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. San Francisco and the thousands of suburban . 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. This other page: How do I contact support? Cherry Lk Nr Hetch Hetchy Ca | California Reservoir Levels - SNOFLO This other page: https . Ive looked at reservoir sights for years. setTimeout(function (){ In whats known as the Bay-Delta Plan, state water regulators are amid a years-long effort to negotiate a policy for how much water should be kept in rivers that flow to the Sacramento-San Joaquin River Delta to meet the needs of both people and wildlife. Lock 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 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. It looks like the red and blue lines are backwards on Folsom. Generation at Holm powerhouse below Cherry Lake would be less affected. Also, do they provide inflows and outflows for locations? I appreciate the information you are providing. How Fast Are California Reservoirs Filling Up? That cant be right. Read more about the data team and their work. Hetchy refers to a valley in the Sierra Nevada and a reservoir that San Francisco Should Pay Yosemite the Dam Rent - perc.org Restore Hetch Hetchys subsequent appeal to the ruling was How come the totals disagree with the cal map graphic? Kellie Hwang is the newsletter editor for The San Francisco Chronicle. How can I apply to SFPUC? }, 150); Waterfalls gushed at Hetch Hetchy after an atmospheric river event in October 2021. San Franciscos water-bank in Don Pedro Reservoir, downstream on the Tuolumne River, holds twice as much water as Hetch Hetchy. One of the big challenges in water management is controling the release. Each row represents one reservoir, with bars showing how much of the reservoir is filled (blue) and unfilled (brown). Water data back to 1956 are available online. Email: kellie.hwang@sfchronicle.com, Yoohyun.Jung@sfchronicle.com Twitter: @KellieHwang, @yoohyun_jung. California reservoir levels: . 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. Major snowstorm might leave you stranded, New 101 express lanes opens in Bay Area. Curious why Shasta lake seems to be making big gains in water coming in and Trinity not so much? 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. I recently joined the team with Restore Hetch Hetchy as Engagement & Development Director. sends student to hospital, Heres how much rain and snow is on the way this weekend, Your Privacy Choices (Opt Out of Sale/Targeted Ads). She is also an alumna of Reveal from the Center for Investigative Reporting Investigative Fellowship and The New York Times Student Journalism Institute. Save my name, email, and website in this browser for the next time I comment. globe.height = globe.contentWindow.document.body.scrollHeight+40+"px"; But the growing water reserves dont please everyone. You can find the charts below from the California Department of Water Resources website. Units are in kaf, thousands of acre feet. O'Shaughnessy Dam was built on the Tuolumne River in 1923 to create Hetch Hetchy Reservoir. Python is used to extract the data from this page hourly and wrangle the data in to a clean format. For most of the year it will still be possible to divert the flow of the Tuolumne River into the pipeline just downstream of the National Park boundary. So on Jan 10 were at 82% of the average for Jan 10. The commission plans to decide Nov. 23 whether to formally ask customers to conserve water. "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. Flood control agencies (not DWR) have the most say in regard to releases. This local water is captured in reservoirs located in San Mateo and Alameda counties. For each of the top 8 reservoirs the storage has increased by a total of 217 kaf, however). Hetch Hetchy Reservoir and Water System resizeframe(); Love easy to read and understand information. Twenty of San 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. By a large measure, damming and flooding Hetch Hetchy is the most significant damage ever allowed in any of our national parks. She has been with SFGATE for more than 10 years. 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. Hetch Hetchy is one of nine reserviors in a water system that serves San Francisco and other Bay Area communities. not passed until 1928 five years after the dam was built. Draining Hetch Hetchy without depriving Bay Area residents of The reservoir is eight miles long and the largest single body of water in Yosemite. 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. San Franciscos water system, which includes Hetchy Hetchy, is expected to fill this winter for the first time since 2019. May 24, 2022 - BAWSCA Statement About the Adoption of a Systemwide Water Use Reduction of 11%. 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. For example, Hetch Hetchy Reservoir in Yosemite National Park provides 85 percent of San Francisco's total water needs. environmental context. This is an excellent tool you have put together. Department of Water Resources is just another in a long line of completely mismanaged California entities. California drought: Charts show where reservoir levels stand after a 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. Central Valleyfarms have installed enough drip irrigationstrips to reach the moon and back, an improvement that also enables more efficient application of fertilizer and pesticides. The area around Shasta has more volcanic soils that absorb rainfall than the Feather River drainage. The upcountry portion of the System begins with Hetch Hetchy Reservoir in Yosemite National Park. That puts it at 84 percent of where it would usually be usually at this time of year. Assistant General Manager for Water Steven Ritchie credits the way the system is managed along with lower. 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. . 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. Hoping they start building more reservoirs soon. Restoring Hetch Hetchy Valley will allow all three power plants to remain operational but will reduce power generation at these by about 20% an average of about 350 million kWh per year. CHERRY LK NR HETCH HETCHY CA Important Legacy real-time page Monitoring location 11277200 is associated with a LAKE, RESERVOIR, IMPOUNDMENT in TUOLUMNE COUNTY, CALIFORNIA. Your Privacy Choices (Opt Out of Sale/Targeted Ads). 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. Additionally, the bounty helps the more than two dozen communities in Alameda, San Mateo and Santa Clara counties that get their water from the city. San Francisco operates three medium-sized hydro-electric power plants in the Tuolumne River watershed Kirkwood, Moccasin, and Holm. YTD values are from January 1 . hetch hetchy reservoir level percentage Rivers and Streams Streams draining into the Peninsula Watershed within the project area are relatively small, steep, and in a 2021-11-17. Day Hikes in Hetch Hetchy - National Park Service drained by the Tuolumne 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. During most years, there will be a 30-day shut down of the Hetch Hetchy source in the winter months. Located in the northwest portion of Yosemite National Park, Hetch This is the first state (of 6 I have lived in) that has had water police and restrictions. O'Shaughnessy Dam is a 430-foot (131 m) high concrete arch-gravity dam in Tuolumne County, California, United States.It impounds the Tuolumne River, forming the Hetch Hetchy Reservoir at the lower end of Hetch Hetchy Valley in Yosemite National Park, about 160 miles (260 km) east of San Francisco. Maintaining this variety of sources is an important component of our near and long-term water supply management strategy. Why is Lake Nacimiento and Lake San Antonio not listed? But Sites would be what's called an off-channel . 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. While the rainfall has been bad for many people, I am happy to see Californias reservoirs are benefiting slightly, Amen! over the past few days. Hetch Hetchy water travels 160 miles via gravity from Yosemite to the San Francisco Bay Area. The proportion of blue to brown will show how full it is, while the red line shows the historical level that reservoir is typically at for this date of the water year. This was helpful to project seasonal trends & storm impacts. 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). 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%. It updates hourly using data from the California Department of Water Resources (DWR) website, giving an up-to-date picture of California reservoir levels. I dont know if weve seen anything like this in October before.". Occasionally the source water will shift to local reservoirs during routine maintenance to the conveyance system. Wapama Falls (moderate) 5 mi (8 km) round-trip; 2 hours. How much NorCal reservoirs shot up a week after big storm - SFGATE 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. 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. Hetch Hetchy gushes over wetlands Institute of the Environment and This is a marimekko (or mekko) graph which may take some time to understand if you arent used to seeing them. Could you also do the same for the Colorado River reservoirs to see how they are fairing? Different presidential administrations also have tried to address Begin at O'Shaughnessy Dam. Related articles . 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. the map graph doesnt include berryessa. 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. Omar, Thanks! Hetch Hetchy Regional Water System, which serves San Francisco, 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. looks like the CDEC website is the cause of the issue unless it actually dropped 90% in a day: //this function is called from the javascript from within the iframe after the contents of iframe are loaded (and after an additional 150ms delay) It was the only tool that I could find that would allow me to make a vertical marimekko graph. Its just small enough that the name doesnt appear as the bar is too thin. Meant this comment for the integrated snowpack and reservoir view. In 2021, the SFPUC and the Modesto and Turlock Irrigation Districts launched a proactive pilot program with the U.S. Is the Stanley Quencher tumbler worth its TikTok hype? Constitution used to support the arguments to remove the dam was What happened to the Hetch Hetchy level? Los Angeles,Orange CountyandSan Josehave developed ambitious water recycling programs and have vastly improved local groundwater management. Sierra Nevada - Water Education Foundation Arg. With modest additional investments San Francisco will be able to maintain an uninterrupted supply of high quality Tuolumne River water. At this facility, which is shared with other water agencies, the city can stash water for credits against future draws on the river. It certainly looks dry at least until the last week in February, he said. The advocacy group Restore Hetch Hetchy took its case for 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. . PDF Hetch Hetchy Regional Water System Water Supply and Delivery Status - SFPUC Find out more about the system at http://www.sfwater.org, BAWSCA Board Policy Committee Meeting, April 12, 2023 1:30pm. Nice! Thats just another very strong indication visually that its a big water year.. They also built a spillway that was too steep and did not install energy dissipators along the spillway. Similar findings are described in theUC Davis studyRe-Assembling Hetch HetchyandUS Bureau of Reclamation study. 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.. That said, most of its outflow makes its way down Feather River (via Rock Creek Reservoir) and ultimately into Orville. And early forecasts show the rest of the wet season is not likely to produce enough precipitation. Current conditions of LAKE OR RESERVOIR WATER SURFACE ELEVATION ABOVE NGVD 1929 and RESERVOIR STORAGE are available. Much of the recent inflow was to Hetch Hetchy, which can hold about 360,000 acre-feet of water and was 83% full at the start of the month. https://engaging-data.com/ca-reservoir-level/ Thinking more about it. Yoohyun Jung is the Deputy Data Editor for The San Francisco Chronicle. Together, the BAWSCA agencies account for two-thirds of water consumption from the system and pay for two-thirds of its upkeep. There is something strange about the data over the last two days (Jan.17 to Jan. 19): Reservoir behind OShaughnessy Dam does not require filtration. While constructed and owned by San Francisco, the water system was in fact planned to benefit the greater San Francisco Bay Area population. Although Hetch Hetchy Reservoir is the most well-known, it stores less than 25% of the system's water. So they should be saving much more and deal with the .000001 of risk later. What period does CA use for Historical Average? It will be very different depending on the period chosen. Last week, I paid a visit to Hetch Hetchy. Great visualization Chris! Hetch Hetchy Reservoir (Yosemite National Park) - Tripadvisor do so. Water Quality Updates | Water Resources Another not monitored by the State? document.getElementById('globes').contentWindow.location.reload(); Remember, much of the state is still in a drought and so the prudence is warranted.. Its water supply Hetch Hetchy Reservoir, in the Sierra Nevada is 80% full, the ground is saturated and near-record rainfall has occurred in recent days. I live in the central valley. I was thinking that it would be interesting to compare inflows and outflows. Secure .gov websites use HTTPS 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. Water is rapidly flowing into the state's reservoirs. The water travels through a series of pipelines before it reaches the Bay Area and blends with five local reservoirs. 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.