scenic mountain valley in a national park. Only improvement I would suggest is an improvement of the display of the smaller reservoirs so the names are readable. The judge also noted the provision of the state One gauge in the area has measured 6.12 inches since Oct. 1, which is 899% of normal. The reservoir is now projected to cost $4.4 billion, with Prop. Love this. In fact, thanks to a little snowmelt, water levels were up for all reservoirs from December to January. Thanks for putting this together. With modest additional investments San Francisco will be able to maintain an uninterrupted supply of high quality Tuolumne River water. Hi Keith, you could de-select the large reservoirs from the menu at the top right. Upcountry and the Bay Area. San Francisco operates three medium-sized hydro-electric power plants in the Tuolumne River watershed Kirkwood, Moccasin, and Holm. 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. A dry January with little rainfall across much of Northern California actually didnt hurt the states water storage levels, according to data from the California Department of Water Resources. Its currently listed on this page as 29kaf full, but the usgs.gov page below says Hetch Hetchy is at 299.7kaf full. Is that from melting snow and rain water coming from the mountains and filling it up? Thats a very poor design. California snowpack hits highest level this century for March. California boosts water deliveries to highest level in years, thanks to storms, California reservoir levels: Charts show water supply across the state, Track water shortages and restrictions across Bay Area. Lake Oroville. Generation at Holm powerhouse below Cherry Lake would be less affected. 2022 All Rights Reserved. proposed as a source of water following the 1906 San Francisco currently, there is a lot more water coming in than going out. I recently joined the team with Restore Hetch Hetchy as Engagement & Development Director. And more work is underway. This local water is captured in reservoirs located in San Mateo and Alameda counties. Hetch Hetchy Reservoir in Yosemite was 69 percent full on Tuesday, 150 percent of normal for this time of year. For perspective, water demand across the SFPUCs service area of 2.7 million people was about 205,000 acre-feet last fiscal year. 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. You can find the charts below from the California Department of Water Resources website. Trinity Lake, with a capacity of 2,447,650 acre-feet, had the smallest increase, from 29% in December to 30% in January. provides water to 2.7 million residents and businesses in the San A wet December produced ample snowfall, which is still sitting at high elevations. Required fields are marked *. Having it here would be great! Forty-six percent . I realize there we dont want to reservoirs overflowing, but why are we still below historical average? I wonder why it doesnt work for you. Kudos to the designers. The main reason for the discrepancy, the department said, is that the focus of the atmospheric river was generally between the Golden Gate and Mount Lassen, meaning that the Feather River watershed received much more rainfall than the Shasta Lake drainage area. 501(c)3 organization, federal tax ID #942419885. James Q. Martin / Restore Hetch Hetchy Show More Show Less 4 of 7 Current conditions of LAKE OR RESERVOIR WATER SURFACE ELEVATION ABOVE NGVD 1929 and RESERVOIR STORAGE are available. Is that a good thing? This is a very clear graph and I cannot imagine the hours you have put in while setting it up and doing the maintenance. 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. 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. Great stuff. System for more than 60 percent of their drinking water. City officials have touted their efforts to help salmon, for example by timing water releases to assist with migration and restoring breeding grounds. 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. Hoping they start building more reservoirs soon. "It is unknown how much area of the Feather River and Shasta Lake drainages are impacted by hydrophobic soils.". 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. I like the comparisons of last year, and the historical average. He frequently writes about water, wildfire, climate and the American West. 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? 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. 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. But the growing water reserves dont please everyone. The SFPUC hoards water in dry years when they dont need to, said Peter Drekmeier, policy director at the conservation group Tuolumne River Trust. For the first week of February, there was a slight increase for most reservoirs from January amounts. The Bay Area transmission system also includes Irvington Tunnel 1 and Tunnel 2, the Bay Tunnel, and the Crystal Springs Bypass Tunnel. Assistant General Manager for Water Steven Ritchie credits the way the system is managed along with lower. Your Privacy Choices (Opt Out of Sale/Targeted Ads). In 2021, the SFPUC and the Modesto and Turlock Irrigation Districts launched a proactive pilot program with the U.S. Local reservoir inflows have negative daily flow rates set to zero. They also built a spillway that was too steep and did not install energy dissipators along the spillway. Hetchy Reservoir can store as much as 117 billion gallons for the 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. But Sites would be what's called an off-channel . My guess would be that the recent systems have been cold and so they are predominantly dropping snow on the watershed. Could you also show each reservoirs level as a function of time? Omar, Thanks! 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. Emissions must be offset by dedicated conservation programs or renewable energy generation such as wind or solar. The Bay Area's main reservoir is up 21 feet. 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. I was thinking that it would be interesting to compare inflows and outflows. The height of the row indicates how much water the reservoir could hold. Your tools are awesome just hurts when you receive bad data at times! I second that request. Im curious why the percentage of capacity has stayed almost flat for the past 6 weeks or so and below historical average. Hetch Hetchy Regional Water System, which serves San Francisco, Congress had to approve the project because it was There is something strange about the data over the last two days (Jan.17 to Jan. 19): thanks. Email: kalexander@sfchronicle.com Twitter: @kurtisalexander. Yoohyun Jung is the Deputy Data Editor for The San Francisco Chronicle. The average for this time of year is approximately 4,659.57ft, plus or minus 39ft. over the past few days. The soaking was welcome in a drought-plagued state with a diminishing water supply. LK ELEANOR NR HETCH HETCHY CA. 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. https://engaging-data.com/ca-reservoir-level/ Water storage facilities include watersheds, dams, and reservoirs including: Calaveras, San Antonio, Crystal Springs, Pilarcitos, and San Andreas. Water data back to 1930 are available online. The overall storage is said to have dropped by 57.4 to 56.4 (or 302 kaf). Restore Hetch Hetchys subsequent appeal to the ruling was San Franciscos water-bank in Don Pedro Reservoir, downstream on the Tuolumne River, holds twice as much water as Hetch Hetchy. You can also share a custom URL by clicking the Save URL button which will put the custom URL into the URL bar of your browser which you can then copy and share. mobilewarn(); The adopted Plan addresses water quality issues affecting the ecosystem and fisheries of the Bay-Delta system. 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. Also, do they provide inflows and outflows for locations? Love the dashboard! This other page: 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). In 2007, the Bush Great work. Amy Graff is the news editor for SFGATE. Hetch Hetchy is one of nine reserviors in a water system that serves San Francisco and other Bay Area communities. However, I am interested in how much we are saving. The snowpack acts as a natural reservoir and slowly releases water.. //this function is called from the javascript from within the iframe after the contents of iframe are loaded (and after an additional 150ms delay) has a graph which shows how the historical avg changes throughout the year (oscillating between ~15000 and ~21000). A separate vote would have been Why is Lake Nacimiento and Lake San Antonio not listed? As of Feb. 1, the systems total water storage was just over 1.3 million acre-feet, or about 92% of capacity. https://cdec.water.ca.gov/dynamicapp/QueryDaily?s=SHA Its water supply Hetch Hetchy Reservoir, in the Sierra Nevada is 80% full, . I am new to the state. 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. 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. 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 have wanted to do exactly this plot for years. 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. Commission. I think the problem is with the CDEC database (as the LakesOnline website also has had incorrectly high information). the map graph doesnt include berryessa. 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. Great Job on this site! 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. 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. For the higher elevations, more of their water comes directly from snowmelt. What happened to the Hetch Hetchy level? 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.. May 24, 2022 - BAWSCA Statement About the Adoption of a Systemwide Water Use Reduction of 11%. Twenty of San 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 . Lots of possibilities, just curious. Should be fixed at some point. These sources are diverse in both the origin of the supply snowmelt, rainfall and recharge of groundwater and their location within our system. Related articles . do so. 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. Current conditions of LAKE OR RESERVOIR WATER SURFACE ELEVATION ABOVE NGVD 1929 and RESERVOIR STORAGE are available. Thank you for a beautiful job. Then it has the appearance of something filling up, while still providing all the detail. 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. Los Angeles,Orange CountyandSan Josehave developed ambitious water recycling programs and have vastly improved local groundwater management. 2013, photo, the Hetch Hetchy Reservoir is hazy with smoke . Waterfalls gushed at Hetch Hetchy after an atmospheric river event in October 2021. Share sensitive information only on official, secure websites. draining the reservoir to court, arguing in 2015 that the however, Ill update the code to include it soon. She joined the Chronicle as a data reporter in 2021. } More about the Tuolumne River Voluntary Agreement can be found athttp://www.tuolumnerivermanagementplan.com. their water supply would cost hundreds of millions of dollars at Monitoring location 11277200 is associated with a LAKE, RESERVOIR, IMPOUNDMENT in TUOLUMNE COUNTY, CALIFORNIA. http://www.tuolumnerivermanagementplan.com. This is a great and very thoughtfully designed web site! https://waterdata.usgs.gov/monitoring-location/11275500/#parameterCode=00054&period=P7D. Im curious: Lk Almanor is the 8th largest reservoir in CA. I would think with the rain it would get to historical average and then more outflow would happen. 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. McClintock bill proposes to improve public access at Hetch Hetchy. In the year prior to Oroville reaching capacity the interactive chart showed the rate of inflow over time. This file photo shows Shasta Lake. Hetchy refers to a valley in the Sierra Nevada and a reservoir that Hours: Year-round, but only accessible by car when the Hetch Hetchy Road is open. Ive been meaning to search for aquifer levels. The blue line indicates the reservoirs water level one year ago today. 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. 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. GNSS2 - Level 2 Quality Survey Grade Global Navigation Satellite System. 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. a broad meaning that had been previously applied in an resizeframe(); not passed until 1928 five years after the dam was built. And early forecasts show the rest of the wet season is not likely to produce enough precipitation. This November, a group of environmental advocates will put forth a ballot measure that would require the San Francisco Public Utilities Commission to develop a plan to drain Hetch Hetchy. Near the town of La Grange, the river exits the Sierra Nevada foothills and flows through a gently sloping alluvial valley that is incised into Pleistocene alluvial fans. earthquake. Current conditions of LAKE OR RESERVOIR WATER SURFACE ELEVATION ABOVE NGVD 1929 and RESERVOIR STORAGE are available. Meanwhile, the group Restore Hetch Hetchy is urging the SFPUC to abandon Hetch Hetchy Reservoir. O'Shaughnessy Dam was built on the Tuolumne River in 1923 to create Hetch Hetchy Reservoir. At times, nearly 90% of the flow of the Tuolumne River is piped off by the SFPUC and other water agencies in the region. The water travels through a series of pipelines before it reaches the Bay Area and blends with five local reservoirs. 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. and maybe another vertical axis to the right of that with reservoir capacity. During late summer and early fall, it will be necessary to move stored supplies from Cherry or Don Pedro Reservoirs into the pipeline. It carried workers and materials for the dam, as well as tourists, postage and other amenities. mandate within Save my name, email, and website in this browser for the next time I comment. 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%. 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. It looks like the red and blue lines are backwards on Folsom. administration attempted to allocate funds to study removing the Yes, and why is Twitchell Dam also not listed? Thats just another very strong indication visually that its a big water year.. 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. Yep. Wapama Falls (moderate) 5 mi (8 km) round-trip; 2 hours. Jeff, the average changes daily as well. 1 covering up to $875 million and much of the rest coming from federal loans to water suppliers. 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. 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. Diamond Valley Lake is a man-made storage reservoir for storing imported water only. the city wastes water, so it was a moot issue. I had a class in spillway design many years ago. An improvement: Could you include a bar for Last year at this date? Good info to know. San Franciscos water system, which includes Hetchy Hetchy, is expected to fill this winter for the first time since 2019. 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. Department of Water Resources is just another in a long line of completely mismanaged California entities. 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. This is the best one out there. 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. Shasta is the reservoir with the largest capacity and so it is the tallest row. Hetch Hetchy is only one of nine reservoirs in the San Francisco Public Utility Commissions water system. Sometimes this is well done sometimes it is poorly done. The regional water system provides water to 2.4 million people in San Francisco, Santa Clara, Alameda and San Mateo counties. While constructed and owned by San Francisco, the water system was in fact planned to benefit the greater San Francisco Bay Area population. The Hetch Hetchy Reservoir that supplies San Francisco, seen here in February, is among those that have refilled after two months of storms. For each of the top 8 reservoirs the storage has increased by a total of 217 kaf, however). Ive looked at reservoir sights for years. A .gov website belongs to an official government organization in the Just in case a large storm hits, that way they dont reach 100% capacity. 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). 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. Francisco Public Utilities Commissions 26 wholesale customers 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. 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 reservoir was at 75 percent capacity as of May 5, totaling 269,963 acre-feet of water (an acre-foot is nearly 326,000 gallons). 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. since it required flooding a 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. Here's what that means. Nate, thanks for the insight. Meant this comment for the integrated snowpack and reservoir view. Kurtis Alexander is an enterprise reporter for The San Francisco Chronicle, with a focus on natural resources and the environment. If we reach 100% after the current rains and then it stops raining for the season, then our percentage will start going down. Located in the northwest portion of Yosemite National Park, Hetch What period does CA use for Historical Average? It will be very different depending on the period chosen. pertained to water that was wasted, and there was no claim that 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.

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