Python is used to extract the data from this page hourly and wrangle the data in to a clean format. Current conditions of LAKE OR RESERVOIR WATER SURFACE ELEVATION ABOVE NGVD 1929 and RESERVOIR STORAGE are available. Long-term values for reservoir inflows use maximum number of complete water years in record. It carried workers and materials for the dam, as well as tourists, postage and other amenities. 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). Hetch Hetchy has generated controversy since it was first Restoring Hetch Hetchy will require some changes in how San Francisco moves and stores water. This is wonderful information. Its water supply Hetch Hetchy Reservoir, in the Sierra Nevada is 80% full, . For example, the average storage level for Feb. 7 is usually 65% of capacity for Trinity Dam, but currently its at 31%. All rights reserved. Have you looked into that side of the water management equation? 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. Amid a worsening drought, water supplies at one important reservoir are That cant be right. Great stuff. Diamond Valley Lake is a man-made storage reservoir for storing imported water only. It wont be full until Spring snowmelt. At the moment, I am not interested in the debate. An improvement: Could you include a bar for Last year at this date? Therefore flood control agencies take the more conservative route and order the release of water. The snowpack acts as a natural reservoir and slowly releases water.. https://cdec.water.ca.gov/dynamicapp/QueryDaily?s=SHA Save my name, email, and website in this browser for the next time I comment. A wet December produced ample snowfall, which is still sitting at high elevations. a minimum, according to the San Francisco Public Utilities Much of the recent inflow was to Hetch Hetchy, which can hold. Great URL. hetch hetchy reservoir level percentage - Examiner not passed until 1928 five years after the dam was built. A different story is unfolding at Hetch Hetchy reservoir in Yosemite National Park, where water is being released to conserve and restore wildlife. I previously made a bar graph showing the overall level of water in the major California reservoirs. Best of luck out there in California! Its just small enough that the name doesnt appear as the bar is too thin. In Yosemite National Park, the Hetch Hetchy reservoir relies. San Francisco voters have demonstrated their opposition to however, Ill update the code to include it soon. reservoir violates the California Constitution specifically the While the long-term voluntary agreement work continues, the SFPUC does not want to wait to restore the Tuolumne Rivers ecosystem. The advocacy group Restore Hetch Hetchy took its case for This is a marimekko (or mekko) graph which may take some time to understand if you arent used to seeing them. dam and restoring the valley. I believe the spillway was designed by the State. But tearing down O'Shaughnessy Dam in order to restore Hetch Hetchy Valley would be a disaster. 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. Good info to know. Very nice work. Thats a very poor design. That said, most of its outflow makes its way down Feather River (via Rock Creek Reservoir) and ultimately into Orville. 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. A lock ( The information on Isabella has been fluctuating drastically (by a factor of 10!) Thats a great suggestion and one that would be particularly helpful! finding an alternative water and power source (Hetchy Hetchy also 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. 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. But they'll cost you, Fight at high school basketball game in S.F. } Lake Shasta and Mendocino are also well below average. their water supply would cost hundreds of millions of dollars at 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. She was previously an engagement reporter. How come the totals disagree with the cal map graphic? Secure .gov websites use HTTPS Your email address will not be published. The remaining 15 percent of water comes from runoff in the Alameda and Peninsula watersheds. All of this work is nothing short of brilliant. Could you also do the same for the Colorado River reservoirs to see how they are fairing? For some strange unknown reason, they are not allowing the lake to fill up. What period does CA use for Historical Average? It will be very different depending on the period chosen. Thanks for the prompt reply! maybe label the vertical axis with aggregate total or system total capacity. Bay Area: Do You Know Where Your Water Comes From? Regional Watersheds | SFPUC According to the SFPUC, the upper reaches of the Tuolumne River have received about 36 inches of rain since the start of the water year in October, almost as much as what the area averages in a year. This is the first state (of 6 I have lived in) that has had water police and restrictions. The Hetch Hetchy Reservoir in Yosemite National Park can store up to 117 billion gallons of drinking water that is used for the Hetch Hetchy Regional Water System that provides water for 2.6 . lawsuit, saying Restore Hetch Hetchys arguments were preempted Hoping they start building more reservoirs soon. Francisco Bay Area. Its important to note that other communities in California have taken actions in far greater magnitude than SF to make our waterways more sustainable. A small portion of the citys water comes from local reservoirs. For perspective, water demand across the SFPUCs service area of 2.7 million people was about 205,000 acre-feet last fiscal year. function reloadiframes(){ The regional water system provides water to 2.4 million people in San Francisco, Santa Clara, Alameda and San Mateo counties. I second that request. Absolutely zero reason to be releasing this much water from these reservoirs. Hetch Hetchy is only one of nine reservoirs in the San Francisco Public Utility Commission's water system. LK ELEANOR NR HETCH HETCHY CA. 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. All rights The Bay Area transmission system also includes Irvington Tunnel 1 and Tunnel 2, the Bay Tunnel, and the Crystal Springs Bypass Tunnel. Add a button to convert the row heights to log scale. function resizeframe(){ 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. Thank you! Los Angeles,Orange CountyandSan Josehave developed ambitious water recycling programs and have vastly improved local groundwater management. Its fluctuating between ~107% and ~20% from one hour to the next (reading 107.6 atm). Even with all the rain and floods, still a long way to fill them to capacity. has a graph which shows how the historical avg changes throughout the year (oscillating between ~15000 and ~21000). . Winter weather conditions may cause road closures. One of the big challenges in water management is controling the release. Ill pass it along to friends. This local water is captured in reservoirs located in San Mateo and Alameda counties. Waterfalls gushed at Hetch Hetchy after an atmospheric river event in October 2021. by the Raker Act. So many facets beautifully chartered. In 2007, the Bush Remaining Capacity text in the legend should be brown? 2151 River Plaza Drive, Suite 205 Gavin Newsom asked all California residents to voluntarily reduce use by 15% compared with use in 2019. 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. 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. best to drain the valley. For each of the top 8 reservoirs the storage has increased by a total of 217 kaf, however). A .gov website belongs to an official government organization in the 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. reserved. Hetch Hetchy Reservoir in Yosemite was 69 percent full on Tuesday, 150 percent of normal for this time of year. Climbers Timmy O'Neill (left) and Lucho Rivera atop a wall overlooking Hetch Hetchy Reservoir. February 21, 2023 - BAWSCA Statement on State Water Resources Control Board'sSchedule for Consideration of a Voluntary Agreement for the Tuolumne River. Major snowstorm might leave you stranded, New 101 express lanes opens in Bay Area. "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. "It is unknown how much area of the Feather River and Shasta Lake drainages are impacted by hydrophobic soils.". California Reservoir Levels - Dashboard and visualization showing current water levels in California reservoirs . 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. Copyright 2023Water Education Foundation. Owned by the city of San Francisco, Hetch Hetchy Reservoir A truly excellent project. 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. 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. But the growing water reserves dont please everyone. I love this this site too. I appreciate the information you are providing. As of 5pm on 1/18, the data appears correct (~58k acre feet), but an hour ago it was reading off the chart (3X above what they are allowed to store right now). So its volume is counted as Orville inflow. No it is correct. environmental context. Hetch Hetchy Water System The system originates more than 100 miles from its primary customers, in Yosemite National Park. "In contrast, the Shasta Lake drainage had only a couple of stations in excess of 10 inches whereas most received less. Current as of October 03, 2022 | Updated by . 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. For the class we based all our designs on the USACE spillway design manual. Emissions must be offset by dedicated conservation programs or renewable energy generation such as wind or solar. Our reservoirs were alarmingly low. In response to the Bay-Delta Plan, the SFPUC and the Modesto and Turlock Irrigation Districts have proposed the Tuolumne River Voluntary Agreement, a combination of flow and non-flow measures sufficient to improve all life-stages of native fish populations in the lower Tuolumne River. I would turn this graph, 90 counterclockwise, and start the capacity along the bottom axis from left to right, with the biggest reservoirs on the left and the smaller ones on the right. currently, there is a lot more water coming in than going out. San Francisco and the thousands of suburban . So on Jan 10 were at 82% of the average for Jan 10. Hetch Hetchy is the only reservoir above its average storage of 63%, and is 82% full. There are no alerts at this time. 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. San Franciscos Hetch Hetchy water system is almost full for the first time in years. Greetings from Mount Laurel New Jersey. Required fields are marked *. 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. 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. Water data back to 1930 are available online. Delivery rates are 7-day average values. 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. PDF Water Supply Update - California 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. Data have been checked by the reporting agency. Water data back to 1930 are available online. She joined the Chronicle as a data reporter in 2021. 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. San Francisco's water-bank in Don Pedro Reservoir, downstream on the Tuolumne River, holds twice as much water as Hetch Hetchy. Hetch Hetchy gushes over wetlands Institute of the Environment and For detailed analysis of how San Franciscos water system will operate without Hetch Hetchy reservoir, see the Environmental Defense Funds studiesParadise RegainedandCherry Intertie Alternative. 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 . Ive looked at reservoir sights for years. Upcountry and the Bay Area. The group says the recent plethora of water shows that the city could do without Hetch Hetchy Reservoir, by using other storage facilities that have filled and pursuing new projects to capture the surplus. The remaining 15 percent of water comes from runoff in the Alameda and Peninsula watersheds. If you look at the inflow data on the major reservoirs, its pretty flat. Meant this comment for the integrated snowpack and reservoir view. Copyright Barry Rokeach, 2014. earthquake. 2022 All Rights Reserved. The captured water is piped 150 miles to the Bay Area. The surplus has renewed concerns about San Francisco stockpiling water at the expense of rivers and the fish and wildlife that live there. A question: the Historical Avg*, is it the value of year-today or natural year? 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. For example, Hetch Hetchy Reservoir in Yosemite National Park provides 85 percent of San Francisco's total water needs. San Francisco Should Pay Yosemite the Dam Rent - perc.org She has been with SFGATE for more than 10 years. Kurtis Alexander is an enterprise reporter for The San Francisco Chronicle, with a focus on natural resources and the environment. Interesting. Reservoir levels rising. Maybe just acre/ft with ^ or down arrow. In the year prior to Oroville reaching capacity the interactive chart showed the rate of inflow over time. United States. Last week, I paid a visit to Hetch Hetchy. Santa Clara, Alameda and San Mateo counties. 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. This is a very clear graph and I cannot imagine the hours you have put in while setting it up and doing the maintenance. Compared to the historical snowpack for this time of year, the May 2021 survey shows that we are only 2 to 5 percent of normal. Visualization was done in javascript and specifically the D3.js visualization library. The area around Shasta has more volcanic soils that absorb rainfall than the Feather River drainage. Nice! In another sign that Californias drought is easing, San Francisco captured more than a years worth of water in just one months time. I find myself coming back to this every few days to check on our water . Email: [email protected] Twitter: @kurtisalexander. One gauge in the area has measured 6.12 inches since Oct. 1, which is 899% of normal. Locked padlock They placed a few dissipators just before the river. The cities of Burlingame, Hayward, Menlo Park, Palo Alto, Redwood City and San Mateo, along with the Alameda County Water District, were among Bay Area communities whose support was influential in persuading Congress to pass the controversial Act, and President Woodrow Wilson to sign it. Excellent graphic! 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. An official website of the United States government.