Copyright Barry Rokeach, 2014. 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 certainly looks dry at least until the last week in February, he said. And early forecasts show the rest of the wet season is not likely to produce enough precipitation. A question: the Historical Avg*, is it the value of year-today or natural year? 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. 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. 501(c)3 organization, federal tax ID #942419885. Click here for the SFPUC's 2020State of the Regional Water System Report. Remember, much of the state is still in a drought and so the prudence is warranted.. Amy Graff is the news editor for SFGATE. Thank you for the time and effort in creating the graphs. Python is used to extract the data from this page hourly and wrangle the data in to a clean format. The amount stored is increasing, just not by a lot. This would allow us to see important, but noise-level reservoirs like hetch hetchy. 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. Curt, Good point re the colder weather dropping more snow instead of rain at higher elevations this year. Generation at Holm powerhouse below Cherry Lake would be less affected. . River. Add a button to convert the row heights to log scale. Occasionally the source water will shift to local reservoirs during routine maintenance to the conveyance system. Current conditions of LAKE OR RESERVOIR WATER SURFACE ELEVATION ABOVE NGVD 1929 and RESERVOIR STORAGE are available. That said, most of its outflow makes its way down Feather River (via Rock Creek Reservoir) and ultimately into Orville. It updates hourly using data from the California Department of Water Resources (DWR) website, giving an up-to-date picture of California reservoir levels. Could you also do the same for the Colorado River reservoirs to see how they are fairing? Didnt realize how bad things were there. Francisco Bay Area. San Franciscos water system, which includes Hetchy Hetchy, is expected to fill this winter for the first time since 2019. Yes, and why is Twitchell Dam also not listed? For some strange unknown reason, they are not allowing the lake to fill up. But they'll cost you, Fight at high school basketball game in S.F. His recent work has examined the impacts of drought, threats to public lands and wildlife, and the nation's widening rural-urban divide. Restore Hetch Hetchy. Current conditions of LAKE OR RESERVOIR WATER SURFACE ELEVATION ABOVE NGVD 1929 and RESERVOIR STORAGE are available. The OShaughnessy Dam i s 300 feet tall only medium-sized by todays standards. . How come the totals disagree with the cal map graphic? If we reach 100% after the current rains and then it stops raining for the season, then our percentage will start going down. 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. Your Privacy Choices (Opt Out of Sale/Targeted Ads). And more work is underway. }, 150); Secure .gov websites use HTTPS She was born and raised in the Bay Area and got her start in news at the Daily Californian newspaper at UC Berkeley where she majored in English literature. Another not monitored by the State? 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? From the main road, it's about a 20- to 25-minute drive to the parking area. Why is it not listed? scenic mountain valley in a national park. I will take a look and see if there are other important reservoirs missing and may add them in the future. Email: kalexander@sfchronicle.com Twitter: @kurtisalexander. 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 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. 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. provides water to 2.7 million residents and businesses in the San I see many of the local canals flowing with lots of water. thanks. Could the reason be that the water from Lake Alma or seems to be used for energy generation, and that there does not seem to be any agricultural or urban use? The trail includes spectacular views of Tueeulala and Wapama Falls. Major snowstorm might leave you stranded, New 101 express lanes opens in Bay Area. 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. How can I apply to SFPUC? 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. The water treatment facilities are Tesla Ultraviolet Treatment Facility, disinfecting the Hetch Hetchy supply; Sunol Valley Water Treatment Plant, treating the water from the Calaveras and San Antonio supply as well as the stored Hetch Hetchy supply; and Harry Tracy Water Treatment Plant, treating the water from the Crystal Springs and San Andreas supply. At the beginning of this water year, which started on October 1, 2022, the state's largest water reservoir, Lake Shasta, was a third full, at 33 percent. pertained to water that was wasted, and there was no claim that That puts it at 84 percent of where it would usually be usually at this time of year. Yep. Due to its high-altitude location at 3,900 feet above sea level What happened to the Hetch Hetchy level? use must be reasonable.. Even with all the rain and floods, still a long way to fill them to capacity. 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. 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). https://cdec.water.ca.gov/dynamicapp/QueryDaily?s=HTH Department of Water Resources is just another in a long line of completely mismanaged California entities. Could you also show each reservoirs level as a function of time? A truly excellent project. Construction of the regional water system proceeded over the following 20 years, with water first delivered in 1934. 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. This chart only shows reservoirs filled via natural flow/rainfall. So many facets beautifully chartered. Find out more about the system at http://www.sfwater.org, BAWSCA Board Policy Committee Meeting, April 12, 2023 1:30pm. Omar, Thanks! Begin at O'Shaughnessy Dam. HETCH HETCHY RES A HETCH HETCHY CA. Last week, I paid a visit to Hetch Hetchy. Remaining Capacity text in the legend should be brown? mobilewarn(); It is also the amount of water in a cube that is 352 feet per side (about the length of a football field). 95 percent of. The valley is I find myself coming back to this every few days to check on our water . Hetch Hetchy is only one of nine reservoirs in the San Francisco Public Utility Commissions water system. Even with the latest precipitation, Folsoms values was unchanged. California snowpack hits highest level this century for March. For example, Hetch Hetchy Reservoir in Yosemite National Park provides 85 percent of San Francisco's total water needs. This local water is captured in reservoirs located in San Mateo and Alameda counties. I do not see Diamond Valley Lake Resevoir on this page. reloadiframes(); Ive been meaning to search for aquifer levels. A small portion of the citys water comes from local reservoirs. The question was, what constitutes unreasonable method of The captured water is piped 150 miles to the Bay Area. Really appreciate the work you did to build this graph. 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. Should be fixed at some point. The blue line indicates the reservoirs water level one year ago today. The Bay Area's main reservoir is up 21 feet. 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 maximum that the city has put away is 570,000 acre-feet of water. That cant be right. 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. 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. The height of the row indicates how much water the reservoir could hold. Its supposed to be brown. A lock ( An improvement: Could you include a bar for Last year at this date? document.getElementById('globes').contentWindow.location.reload(); This is the best one out there. Turn right on to Hetch Hetchy Road - Evergreen Road and continue another 7.5 miles to the parking area for Hetchy Hetchy Reservoir next to the dam. 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. Current conditions of LAKE OR RESERVOIR WATER SURFACE ELEVATION ABOVE NGVD 1929 and RESERVOIR STORAGE are available. A .gov website belongs to an official government organization in the Owned by the city of San Francisco, Hetch Hetchy Reservoir however, Ill update the code to include it soon. 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. 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. Call 209-372-0200 for the latest road and weather conditions, Hetch Hetchy Road Daily Hours: 8 am to 5 pm The Bay Area transmission system also includes Irvington Tunnel 1 and Tunnel 2, the Bay Tunnel, and the Crystal Springs Bypass Tunnel. Santa Clara, Alameda and San Mateo counties. A lock ( Voters rejected a 2012 Usually with warm ARs, you get a dramatic increase in inflow, which can fill even very large reservoirs relatively quickly, like Oroville in 2017. I am new to the state. DWR is one of many local, State and Federal entities that dictate water releases. 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. This is a very clear graph and I cannot imagine the hours you have put in while setting it up and doing the maintenance. Good info to know. With modest additional investments San Francisco will be able to maintain an uninterrupted supply of high quality Tuolumne River water. Reservoir levels rising. Twenty of San ) or https:// means youve safely connected to the .gov website. Several cities and water agencies that are now part of BAWSCA urged Congress to pass the Raker Act in 1913, the law that allowed federal lands in the Sierra Nevada Mountains, including Hetch Hetchy Valley in Yosemite National Park, to be used to build the water system. ", The difference in soil type in the two watersheds was likely another factor. She has been with SFGATE for more than 10 years. Shasta, Oroville, Hetch Hetchy and many others were built by damming large rivers. 2022 All Rights Reserved. P.S. 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. LK ELEANOR NR HETCH HETCHY CA. Located in the northwest portion of Yosemite National Park, Hetch While the long-term voluntary agreement work continues, the SFPUC does not want to wait to restore the Tuolumne Rivers ecosystem. You can email her at agraff@sfgate.com. Data have been checked by the reporting agency. . 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. 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. 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. I would think with the rain it would get to historical average and then more outflow would happen. The middle portion of the watershed from New Don Pedro Reservoir to above Hetch Hetchy Reservoir is characterized by deep canyons and forested terrain. We own and operate the Hetch Hetchy Regional Water System which serves 2.7 million customers. This dashboard provides a bit more detail on the state of each of the reservoirs while also showing an aggregate total. The OShaughnessy Dam, which was completed in 1938 and is 430-feet tall, impounds water in Hetch Hetchy Reservoir for communities in the Bay Area. Share sensitive information only on official, secure websites. https://cdec.water.ca.gov/dynamicapp/QueryDaily?s=SHA Los Angeles,Orange CountyandSan Josehave developed ambitious water recycling programs and have vastly improved local groundwater management. Read more about the data team and their work. We provide water directly to customers in San Francisco and wholesale through 26 Water agencies in Alameda, Santa Clara, and San Mateo counties. Lake Mendocino and Lake Berryessa water levels stayed the same. BAWSCA agencies advocated for the capital improvement program that was adopted by the SFPUC in 2002, and are actively monitoring its implementation. The Hetch Hetchy Valley today with the dam seen in the lower right. Thank you for a beautiful job. Secure .gov websites use HTTPS Saved to my favorites now. Emissions must be offset by dedicated conservation programs or renewable energy generation such as wind or solar. This other page: https . How do I pay my bill? Although Hetch Hetchy Reservoir is the most well-known, it stores less than 25% of the systems water. The citys water system also includes a water bank at Don Pedro Reservoir along the Tuolumne River, which was full as of Feb. 1. Shasta is very large and could hold about 3.5 cubic kilometers of water at full (but not flood) capacity. Locked padlock Reservoir Report 4,670 ft -0.02% today 100% of normal Normal Water lake or reservoir water surface elevation above ngvd 1929, ft at Cherry Lk Nr Hetch Hetchy Ca is currently 4,670 ft, approximately 100% of normal.
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