", The difference in soil type in the two watersheds was likely another factor. Lock Super frustrating. Current as of October 03, 2022 | Updated by . 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). Water Quality Updates | Water Resources 7 days 30 days HETCH HETCHY RES A HETCH HETCHY CA - USGS Water Data for the Nation But they'll cost you, Fight at high school basketball game in S.F. It updates hourly using data from the California Department of Water Resources (DWR) website, giving an up-to-date picture of California reservoir levels. Department of Water Resources is just another in a long line of completely mismanaged California entities. Hetch Hetchy is only one of nine reservoirs in the San Francisco Public Utility Commissions water system. All rights Just in case a large storm hits, that way they dont reach 100% capacity. Sierra Nevada snowpack at 93 percent of normal - The Mercury News Long-term values for reservoir inflows use maximum number of complete water years in record. O'Shaughnessy Dam (California) - Wikipedia 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. 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. Your email address will not be published. Francisco Public Utilities Commissions 26 wholesale customers 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. I believe the spillway was designed by the State. Required fields are marked *. Arg. California drought: Charts show where reservoir levels stand after a dry January, Track water shortages and restrictions across Bay Area. Thats just another very strong indication visually that its a big water year.. Lots of possibilities, just curious. The dam and reservoir are the source for the Hetch Hetchy Aqueduct, which provides water for over . A lock ( The name Hetch Hetchy is derived from a Sierra Miwok During the winter months, they let water out of the reservoirs in anticipation of large storms. Ive looked at reservoir sights for years. Thanks for taking the time to do that. And more work is underway. Reservoir behind OShaughnessy Dam does not require filtration. The blue line indicates the reservoirs water level one year ago today. For example, the average storage level for Feb. 7 is usually 65% of capacity for Trinity Dam, but currently its at 31%. Its promising, but too early to let our guard down, said Joseph Sweiss, spokesman for the San Francisco Public Utilities Commission, the citys water purveyor, in an email to The Chronicle. "In contrast, the Shasta Lake drainage had only a couple of stations in excess of 10 inches whereas most received less. February 21, 2023 - BAWSCA Statement on State Water Resources Control Board'sSchedule for Consideration of a Voluntary Agreement for the Tuolumne River. 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. Very nice work. We own and operate the Hetch Hetchy Regional Water System which serves 2.7 million customers. Californias largest water agencies, in both the urban and agricultural sectors, have invested in ambitious groundwater banking programs inKern County. mobilewarn();
Your email address will not be published. The valley is During most years, there will be a 30-day shut down of the Hetch Hetchy source in the winter months. The Hetch Hetchy Valley today with the dam seen in the lower right. What's taking so long to build a California reservoir? - CalMatters Stay up-to-date with breaking news and upcoming events. This other page: https . How Much Water is in California Reservoirs? These sources are diverse in both the origin of the supply snowmelt, rainfall and recharge of groundwater and their location within our system. It was at 60 percent as of March 1 and rising, according to the Bureau of Reclamation. The SFPUC hoards water in dry years when they dont need to, said Peter Drekmeier, policy director at the conservation group Tuolumne River Trust. This was helpful to project seasonal trends & storm impacts. 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. draining the reservoir to court, arguing in 2015 that the dam and restoring the valley. 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? Secure .gov websites use HTTPS The construction of the Hetch Hetchy Railroad took place from 1915 to 1918. Interactive California Reservoir Levels Dashboard - Engaging Data Monitoring location 11277500 is associated with a LAKE, RESERVOIR, IMPOUNDMENT in TUOLUMNE COUNTY, CALIFORNIA. For perspective, water demand across the SFPUC's service area of 2.7 million people was about 205,000 acre-feet last fiscal year. If you look at this chart for Hetch Hetchy, you can see that the biggest and steadiest rise is between March and July, https://waterdata.usgs.gov/monitoring-location/11275500/#parameterCode=00054&period=P365D&compare=true. Share sensitive information only on official, secure websites. That includes the Tuolumne River, which provides water via Hetch Hetchy Reservoir to Bay Area customers. The reservoir is eight miles long and the largest single body of water in Yosemite. Cherry Lk Nr Hetch Hetchy Ca | California Reservoir Levels - SNOFLO LK ELEANOR NR HETCH HETCHY CA - USGS Water Data for the Nation 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. 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. Interesting. Its great seeing all the reservoirs in California at or near historical averages.
The information on Isabella has been fluctuating drastically (by a factor of 10!) So many facets beautifully chartered. This is a very clear graph and I cannot imagine the hours you have put in while setting it up and doing the maintenance. 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. Voters rejected a 2012 "This was rare for October. At the moment, I am not interested in the debate. James Q. Martin / Restore Hetch Hetchy Show More Show Less 4 of 7 If you are on a mobile device you can tap the reservoir to get that same info. 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. Hetch Hetchy Regional Water System The Hetch Hetchy watershed, an area located in Yosemite National Park, is the major source of water for all of San Francisco's water needs. 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. lawsuit, saying Restore Hetch Hetchys arguments were preempted Other California water agencies have done far more to reduce the impact of their system on Mono Lake, the Trinity and San Joaquin Rivers, and the Bay-Delta. This is a great and very thoughtfully designed web site! I would like to make one small suggestion:. Thats a very poor design. 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. Great work. Yoohyun Jung is the Deputy Data Editor for The San Francisco Chronicle. 2013, photo, the Hetch Hetchy Reservoir is hazy with smoke . The reservoir is now projected to cost $4.4 billion, with Prop. 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. Top ways to experience Hetch Hetchy Reservoir and nearby attractions Yosemite: Audio Driving Tour 1 Full-day Tours from $9.99 per group (up to 8) Private Yosemite Explorer Package | 3 Days of Adventure 3 Private and Luxury from $750.00 per adult (price varies by group size) Private Family Photo Day in Yosemite 78 Recommended Full-day Tours from Nate, thanks for the insight. Hetchy Reservoir can store as much as 117 billion gallons for the It is also the amount of water in a cube that is 352 feet per side (about the length of a football field). John Muir and the So on Jan 10 were at 82% of the average for Jan 10. Commission. Local reservoir inflows have negative daily flow rates set to zero. The OShaughnessy Dam i s 300 feet tall only medium-sized by todays standards. It does not meet the California definition of renewable energy. Due to its high-altitude location at 3,900 feet above sea level 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. San Francisco maintained the phrase only Waterfalls gushed at Hetch Hetchy after an atmospheric river event in October 2021. I am grateful for all that you have done here to open our eyes to what is happening, what has happened, and even what might be on the horizon. It seems likely one of those two readings is wrong. Since June 2011, the Water Enterprise has operated the Citys Emergency Firefighting Water System (EFWS, formerly known as the Auxiliary Water Supply System (AWSS)), an independent, high-pressure water supply system for fire suppression. Absolutely zero reason to be releasing this much water from these reservoirs. This is my first year watching the levels, so maybe Im missing something. This other page: UPDATE: Here's where California reservoir levels stand after this week's rains. BAWSCA Board of Directors Meeting, March 16, 2023, 6:30 PM. CHERRY LK NR HETCH HETCHY CA - USGS Water Data for the Nation 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. GNSS2 - Level 2 Quality Survey Grade Global Navigation Satellite System. 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. In another sign that Californias drought is easing, San Francisco captured more than a years worth of water in just one months time. For the higher elevations, more of their water comes directly from snowmelt. Lake Shasta, the state's largest reservoir, rose 2.9 feet and added 31,020 acre-feet of water. A truly excellent project. Nice! This dashboard is great! rejected by an appellate court and the California Supreme Court 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. Maybe just acre/ft with ^ or down arrow. An improvement: Could you include a bar for Last year at this date? Also a little nit. Thank you for the time and effort in creating the graphs. 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. 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. If you are on a computer, you can hover your cursor over a reservoir and the dashboard at the top will provide information about that individual reservoir. the Bay Area. Only improvement I would suggest is an improvement of the display of the smaller reservoirs so the names are readable. 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. Water data back to 1930 are available online. 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. I would think with the rain it would get to historical average and then more outflow would happen. SFPUC said as of this week, the Hetch Hetchy reservoir is at 92 percent capacity. Last week, I paid a visit to Hetch Hetchy. The regional water system provides water to 2.4 million people in San Francisco, Santa Clara, Alameda and San Mateo counties. Thanks for the link. We provide water directly to customers in San Francisco and wholesale through 26 Water agencies in Alameda, Santa Clara, and San Mateo counties. I was thinking that it would be interesting to compare inflows and outflows. Diamond Valley Lake is a man-made storage reservoir for storing imported water only. What happened to the Hetch Hetchy level? For perspective, water demand across the SFPUCs service area of 2.7 million people was about 205,000 acre-feet last fiscal year. The upcountry portion of the System begins with Hetch Hetchy Reservoir in Yosemite National Park. May 24, 2022 - BAWSCA Statement About the Adoption of a Systemwide Water Use Reduction of 11%. You dont see runoff right away, the snow is still up there, frozen, doing what we want it to do, he said. The citys water system also includes a water bank at Don Pedro Reservoir along the Tuolumne River, which was full as of Feb. 1. Thank you for a beautiful job. Bay Area: Do You Know Where Your Water Comes From? Visualization was done in javascript and specifically the D3.js visualization library. 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. 1 kaf is the amount of water that would cover 1 acre in one thousand feet of water (or 1000 acres in water in 1 foot of water). Best of luck out there in California! Assistant General Manager for Water Steven Ritchie credits the way the system is managed along with lower. Hetch Hetchy has generated controversy since it was first Hetch Hetchy is one of nine reserviors in a water system that serves San Francisco and other Bay Area communities. 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. Is that from melting snow and rain water coming from the mountains and filling it up? Water data back to 1956 are available online. 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. Lake Mendocino and Lake Berryessa water levels stayed the same. }
It would be really interesting to visualize whether were able to replenish ground water this year after all the precipitation. Here's what that means. Heres where California reservoir levels stand after this weeks rains. Hetch-Hetchy predicted to fill by end of the snowmelt period 2020-2021 Winter season continues to be dry 2019-2020 was dry, although key differences Feb. 2020 was unusually warm, which impacted snowfall levels and water demands; Feb 2021 was cooler, and hence snowfall level higher and water use lower Thanks for putting this together. This almost happened with the Orville Dam in 2017. Charts from the California Department of Water Resources show conditions at key state reservoirs on Oct. 22 (left) and on Nov. 2 (right). This site is a great tool, especially as we try to climb out of these drought years. Then it has the appearance of something filling up, while still providing all the detail. 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. These graphs will always read low because they represent the percentage of the seasonal average at some point before the end of the season. currently, there is a lot more water coming in than going out. supplies water to the San Francisco Bay Area. Its supposed to be brown. I have to agree with many people here what a great job making such a clear graph of whats happening. Regional Watersheds | SFPUC O'Shaughnessy Dam was built on the Tuolumne River in 1923 to create Hetch Hetchy Reservoir. One of the big challenges in water management is controling the release. The snowpack acts as a natural reservoir and slowly releases water.. Having it here would be great! 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. 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. SFPUC announces Hetch Hetchy reservoir at less than 65 percent capacity 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. While constructed and owned by San Francisco, the water system was in fact planned to benefit the greater San Francisco Bay Area population. Delivering approximately 260 million gallons of water per day, the regional system consists of over 280 miles of pipelines, over 60 miles of tunnels, 11 reservoirs, five pump stations and two water treatment plants. The SFPUC has consistently stated that voluntary agreements are the best path forward for the Bay-Delta, as the voluntary agreement strikes the right balance between environmental stewardship and water reliability. Different presidential administrations also have tried to address Have you looked into that side of the water management equation? Restore Hetch Hetchy.
Should be fixed at some point. 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. Hetch Hetchy Reservoir - O'Shaugnessy Dam - National Park Service California drought: Charts show where reservoir levels stand after a In the year prior to Oroville reaching capacity the interactive chart showed the rate of inflow over time. I wonder why it doesnt work for you. 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. Reservoir levels rising. Ill pass it along to friends. The middle portion of the watershed from New Don Pedro Reservoir to above Hetch Hetchy Reservoir is characterized by deep canyons and forested terrain. Lake Shasta and Mendocino are also well below average. Together, the BAWSCA agencies account for two-thirds of water consumption from the system and pay for two-thirds of its upkeep. 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. Hetch Hetchy Reservoir and Water System 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. scenic mountain valley in a national park. Really appreciate the work you did to build this graph. All Rights Reserved. It wont be full until Spring snowmelt. I find myself coming back to this every few days to check on our water . 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. Begin at O'Shaughnessy Dam. Even with the latest precipitation, Folsoms values was unchanged. Hetch Hetchy water travels 160 miles via gravity from Yosemite to the San Francisco Bay Area. Located in the northwest portion of Yosemite National Park, Hetch There is something strange about the data over the last two days (Jan.17 to Jan. 19): That cant be right. Current conditions of LAKE OR RESERVOIR WATER SURFACE ELEVATION ABOVE NGVD 1929 and RESERVOIR STORAGE are available. She is a University of Washington graduate. 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. A Map and Guide to Hetch Hetchy Reservoir at Yosemite - TripSavvy a broad meaning that had been previously applied in an 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. looks like the CDEC website is the cause of the issue unless it actually dropped 90% in a day: 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. So its volume is counted as Orville inflow. window.addEventListener("orientationchange", function() {
I noticed that Folsom does not change whereas every reservoir changes on an hourly update. Are they releasing water to relieve the pressure in anticipation of more water? 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. The advocacy group Restore Hetch Hetchy took its case for You can also use it to monitor only the reservoirs you are most interested in. a minimum, according to the San Francisco Public Utilities has a graph which shows how the historical avg changes throughout the year (oscillating between ~15000 and ~21000). 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 was previously an engagement reporter. While the rainfall has been bad for many people, I am happy to see Californias reservoirs are benefiting slightly, Amen! A .gov website belongs to an official government organization in the 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. Storage and Delivery Updates | SFPUC DWR is one of many local, State and Federal entities that dictate water releases. I dont know if weve seen anything like this in October before.". Yes, and why is Twitchell Dam also not listed? Yep. https://engaging-data.com/ca-reservoir-level/ This is also affected by most of these dams multi-purpose nature where they are near constantly releasing for power(like Shasta) or to make room for flood control capacity(like Folsom). Crystal Springs Reservoir, along Highway 280 in San Mateo County, was 89 percent . "It was a very healthy shot in the arm. generates electricity for the city). Great resource! 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). Lake Oroville. Over the summer, Gov. over the past few days. The gain came after weather gauges in the area recorded more than 5 inches from one storm. 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.