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. There are no alerts at this time. around the Bay Area rely on the Hetch Hetchy Regional Water Wonderful site. The only improvement I would ask you to consider is to allow the Y-axis to be Linear or Log, the latter allowing us to see all the small reservoirs quite easily. In 2021, the SFPUC and the Modesto and Turlock Irrigation Districts launched a proactive pilot program with the U.S. Californias largest water agencies, in both the urban and agricultural sectors, have invested in ambitious groundwater banking programs inKern County. their water supply would cost hundreds of millions of dollars at 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. Generation at the Kirkwood power plant would depend on the natural flow of the Tuolumne River, and would be significantly diminished during late summer and fall. Click here for the SFPUC's 2020State of the Regional Water System Report. This is of particular interest as the self-imposed restrictions deadline is approaching and the federal government may have to step in and mandate restrictions across the 7 states, including California. Amy Graff is the news editor for SFGATE. Its supposed to be brown. . Current conditions of LAKE OR RESERVOIR WATER SURFACE ELEVATION ABOVE NGVD 1929 and RESERVOIR STORAGE are available. Could you also show each reservoirs level as a function of time? If you look at the inflow data on the major reservoirs, its pretty flat. A small portion of the citys water comes from local reservoirs. 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. Generation at Holm powerhouse below Cherry Lake would be less affected. Omar, Thanks! 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. 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. Locked padlock Constitution used to support the arguments to remove the dam was 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. Share sensitive information only on official, secure websites. 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. How do I pay my bill? Twenty of San 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. I was thinking that it would be interesting to compare inflows and outflows. Maintaining this variety of sources is an important component of our near and long-term water supply management strategy. the issue, including those under Franklin Delano Roosevelt, 501(c)3 organization, federal tax ID #942419885. Is that a good thing? 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. Upcountry and the Bay Area. Could you also do the same for the Colorado River reservoirs to see how they are fairing? Nice! The OShaughnessy Dam i s 300 feet tall only medium-sized by todays standards. It seems likely one of those two readings is wrong. . however, Ill update the code to include it soon. She was previously an engagement reporter. All rights reserved. System for more than 60 percent of their drinking water. Take CA Highway 120 from the park toward Groveland. YTD values are from January 1 . 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. 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. Your email address will not be published. Another not monitored by the State? 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. Im curious: Lk Almanor is the 8th largest reservoir in CA. Northern California's reservoir levels continued to rise in the week after an atmospheric river slammed the state with torrential rain and high winds. Water storage facilities include watersheds, dams, and reservoirs including: Calaveras, San Antonio, Crystal Springs, Pilarcitos, and San Andreas. Its fluctuating between ~107% and ~20% from one hour to the next (reading 107.6 atm). best to drain the valley. the city wastes water, so it was a moot issue. 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. This file photo shows Shasta Lake. The gain came after weather gauges in the area recorded more than 5 inches from one storm. One acre-foot is the equivalent of one acre of land covered in one foot of water. Kudos to the designers. thanks. David Rizzardo, hydrology section manager for the California Department of Water Resources, said there are a lot of factors that affect reservoir storage. 2022 All Rights Reserved. Thank you for a beautiful job. I like the comparisons of last year, and the historical average. 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. How can I apply to SFPUC? 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. 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. And more work is underway. I see many of the local canals flowing with lots of water. Usually with warm ARs, you get a dramatic increase in inflow, which can fill even very large reservoirs relatively quickly, like Oroville in 2017. A .gov website belongs to an official government organization in the The judge also noted the provision of the state So they should be saving much more and deal with the .000001 of risk later. The captured water is piped 150 miles to the Bay Area. 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. 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 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. The Bay Area's main reservoir is up 21 feet. 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. looks like the CDEC website is the cause of the issue unless it actually dropped 90% in a day: Our flagship blog features analysis of news from our staff and announcements of upcoming events. The name Hetch Hetchy is derived from a Sierra Miwok Department of Water Resources is just another in a long line of completely mismanaged California entities. But I would never have imagined how to put all the important information into a single plot. Over the summer, Gov. I do not see Diamond Valley Lake Resevoir on this page. Crystal Springs Reservoir, along Highway 280 in San Mateo County, was 89 percent . Hetch Hetchy Regional Water System, which serves San Francisco, Heres an example of that data for Shasta, where you can see the daily inflows and outflows: At the moment, I am not interested in the debate. The SFPUC hoards water in dry years when they dont need to, said Peter Drekmeier, policy director at the conservation group Tuolumne River Trust. 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. and maybe another vertical axis to the right of that with reservoir capacity. . globe.height = globe.contentWindow.document.body.scrollHeight+40+"px"; If we reach 100% after the current rains and then it stops raining for the season, then our percentage will start going down. In another sign that Californias drought is easing, San Francisco captured more than a years worth of water in just one months time. This hike follows the shoreline of the reservoir with moderate up and downhill hiking. Spring snowmelt runs down the Tuolumne River and fills Hetch Hetchy, the largest reservoir in our water system. Awesome work!! Secure .gov websites use HTTPS 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. Located within the boundaries of Yosemite National Park, the reservoir saw a sizable 21.31-foot bump in its water level and gained 36,300 acre-feet, according to Tuesday data from the U.S. Geological Survey. The 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. Diamond Valley Lake is a man-made storage reservoir for storing imported water only. 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. That puts it at 84 percent of where it would usually be usually at this time of year. Previously, Kellie covered dining news and trends, visual arts, events and nightlife for the Arizona Republic, and freelanced for the former Contra Costa Times. reloadiframes(); But tearing down O'Shaughnessy Dam in order to restore Hetch Hetchy Valley would be a disaster. Important Legacy real-time page. You dont see runoff right away, the snow is still up there, frozen, doing what we want it to do, he said. . Nate, thanks for the insight. Begin at O'Shaughnessy Dam. Water data back to 1956 are available online. The overall storage is said to have dropped by 57.4 to 56.4 (or 302 kaf). https://waterdata.usgs.gov/monitoring-location/11275500/#parameterCode=00054&period=P7D. I dont know if weve seen anything like this in October before.". Great stuff. Hetch Hetchy is Monitoring location 11275500. That said, most of its outflow makes its way down Feather River (via Rock Creek Reservoir) and ultimately into Orville. California Reservoir Levels - Dashboard and visualization showing current water levels in California reservoirs . Occasionally the source water will shift to local reservoirs during routine maintenance to the conveyance system. Best of luck out there in California! Thanks for developing it, and for sharing it with the rest of us! 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). I have wanted to do exactly this plot for years. The information on Isabella has been fluctuating drastically (by a factor of 10!) As of Feb. 1, the systems total water storage was just over 1.3 million acre-feet, or about 92% of capacity. For each of the top 8 reservoirs the storage has increased by a total of 217 kaf, however). Hetchy Reservoir can store as much as 117 billion gallons for the not passed until 1928 five years after the dam was built. Article X, Section 2 that requires diversions for all water This is my first year watching the levels, so maybe Im missing something. Good info to know. 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. 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. 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%. Is the Stanley Quencher tumbler worth its TikTok hype? 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 a marimekko (or mekko) graph which may take some time to understand if you arent used to seeing them. This was helpful to project seasonal trends & storm impacts. Heres where California reservoir levels stand after this weeks rains. United States. Shasta is very large and could hold about 3.5 cubic kilometers of water at full (but not flood) capacity. A wet December produced ample snowfall, which is still sitting at high elevations. GNSS2 - Level 2 Quality Survey Grade Global Navigation Satellite System. I am new to the state. 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. This local water is captured in reservoirs located in San Mateo and Alameda counties. currently, there is a lot more water coming in than going out. Even with all the rain and floods, still a long way to fill them to capacity. 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. 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. She joined the Chronicle as a data reporter in 2021. 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. The blue line indicates the reservoirs water level one year ago today. It updates hourly using data from the California Department of Water Resources (DWR) website, giving an up-to-date picture of California reservoir levels. UPDATE: Here's where California reservoir levels stand after this week's rains. Official websites use .gov . The trail takes you to the base of Wapama Falls, passing two smaller waterfalls (during spring) on the way. "In contrast, the Shasta Lake drainage had only a couple of stations in excess of 10 inches whereas most received less. reserved. Absolutely zero reason to be releasing this much water from these reservoirs. This is a very clear graph and I cannot imagine the hours you have put in while setting it up and doing the maintenance. The trail includes spectacular views of Tueeulala and Wapama Falls. Monitoring location 11277200 is associated with a LAKE, RESERVOIR, IMPOUNDMENT in TUOLUMNE COUNTY, CALIFORNIA. This chart only shows reservoirs filled via natural flow/rainfall. We own and operate the Hetch Hetchy Regional Water System which serves 2.7 million customers. Related articles . He frequently writes about water, wildfire, climate and the American West. It has no natural inflow or out flow. For the higher elevations, more of their water comes directly from snowmelt. 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But Sites would be what's called an off-channel . a broad meaning that had been previously applied in an The Department of Water Resources, which manages the state's water supply, said in a statement that there are several possible reasons for the difference in inflow amounts between the two reservoirs. The average for this time of year is approximately 4,659.57ft, plus or minus 39ft. A question: the Historical Avg*, is it the value of year-today or natural year? In Yosemite National Park, the Hetch Hetchy reservoir relies. mandate within by the Raker Act. Love easy to read and understand information. The source water from SFPUC is typically from the Hetch Hetchy reservoir located in the Sierra Nevada Mountains. Official websites use .gov One gauge in the area has measured 6.12 inches since Oct. 1, which is 899% of normal. https://cdec.water.ca.gov/dynamicapp/QueryDaily?s=HTH However, I am interested in how much we are saving. Here's what that means. Park visitors walk across OShaughnessy Dam in Yosemite National Park on Sept. 1.
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