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If you have deep wells, they’re collapsing because of subsidence. San Joaquin Valley: the final frontier. Michelle Sneed, hydrologist with the U.S. Geological Survey California Water Science Center, shows off an extensometer she found during a July 2016 field trip to San Joaquin Valley, California. Abstract. While a few days in the San Joaquin Valley might not be the same as three years aboard the starship Enterprise, California Water Science Center scientists searching the Valley for lost technologies had no less of an exploration ahead of them during a July 2016 field trip to the area. As a part of the Bayside Groundwater Project, East Bay... Sneed, Michelle; Orlando, Patricia v.P. View Michelle Sneed's business profile as Land Subsidence Specialist at U.S. Department of the Interior - U.S. Geological Survey. All over the world — from the Netherlands to Indonesia to Mexico City — geology is conspiring with climate change to sink the ground under humanity’s feet. The threat of aquifer compaction increases as groundwater-levels decline, exceeding historic lows. If you have infrastructure that crosses long areas, it’s a big problem. JTI - Institutet för Jordbruks- Och Miljöteknik, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Division of Geodetic Science, School of Earth Sciences, Geohydrology, Geochemistry, and Numerical Simulation of Groundwater Flow and Land Subsidence in the Bicycle Basin, Fort Irwin National Training Center, California, video1-place you cannot do subsidene,THSR, Time-varying land subsidence detected by radar altimetry: California, Taiwan and north China, Analysis and simulation of regional subsidence accompanying groundwater abstraction and compaction of susceptible aquifer systems in the USA, Análisis y simulación de la subsidencia regional asociada a la explotación de agua subterránea y compactación de sistemas acuíferos susceptibles en los EUA, Subsidence due to Excessive Groundwater Withdrawal in the San Joaquin Valley, California, Integration of remotely-sensed and ground-based measurements to constrain simulations of groundwater flow and land subsidence, San Joaquin Valley, CA, Monitoring land-surface deformation on Bicycle Lake playa, Fort Irwin, California, USA, Investigating the Mechanisms for Earth Fissure Development at Bicycle Lake Playa, Fort Irwin, California, Comparison of the MODFLOW-2000 IBS1 and SUB Subsidence Packages for Simulating Residual Aquifer-System Compaction, Hydromechanical response characterization by integration of geophysical and hydrological data, San Lorenzo, California, Evaluating Subsidence in the Central Valley, CA, using InSAR, Identifying Subsidence using Interferometric Synthetic Aperture Radar (InSAR) in Coachella Valley, California, Earthquakes: Rattling the Earth's Plumbing System, Hydraulic and Mechanical Properties Affecting Ground-Water Flow and Aquifer System Compaction, San Joaquin Valley, California, Modeling residual aquifer-system compaction: constraining the vertical hydraulic diffusivity of thick aquitards, Cone Penetration Test and Soil Boring at the Bayside Groundwater Project Site in San Lorenzo, Alameda County, California, Department of Land, Air and Water Resources, Department of Civil and Environmental Engineering. Michelle SNEED, Hydrologist of United States Geological Survey, CA (USGS) | Read 21 publications | Contact Michelle SNEED When fine-grained sediments are originally deposited, they tend to be deposited in random orientations (imagine haphazardly placing your dinner plates in the sink). When groundwater is pumped and not replaced (recharged) quickly enough, compaction can occur. Land subsidence is explained by Michelle Sneed of the USGS. Trump pressured Georgia election investigator to 'find' voter fraud during December … Contemporary applications of radar altimetry include sea-level rise, ocean circulation, marine gravity, and icesheet elevation change. Aquifer-system deformation associated with ground-water-level changes is being investigated cooperatively by the U.S. Geological Survey (USGS) and the East Bay Municipal Utility District (EBMUD) at the Bayside Groundwater Project (BGP) near the modern San Francisco Bay shore in San Lorenzo, … Water was needed to Land subsidence is the settling or sinking of the Earth’s surface caused by subsurface movement of earth materials. Geological Survey” Figures 2, 11, 15, 16, 17 are from: “Land subsidence along the Delta-Mendota Canal in the northern part of the San Joaquin Valley, California, 2003-10: USGS Scientific Investigations Report 2013–5142,” by Michelle Sneed, Justin Brandt and Mike Solt. Abstract. In the Central Valley, groundwater over-pumping has created significant land subsidence in several areas. University students and faculty, institute members, and independent researchers, Technology or product developers, R&D specialists, and government or NGO employees in scientific roles, Health care professionals, including clinical researchers, Journalists, citizen scientists, or anyone interested in reading and discovering research. But if you're on the coast, it's a big problem. Land subsidence isn't unique to California, however. Land subsidence, resulting … Antelope Valley, California, where ground-water withdrawals since the early 1900s have lowered water levels by more than 45 m, and have resulted in nearly 1.5 m of subsidence at Edwards Air Force Base (EAFB). The purpose of the study was to develop a greater understanding of the hydrogeology of the Borrego Valley Groundwater Basin (BVGB) and to provide tools to help evaluate the potential hydrologic effects of future development. By the 1970s, the USGS determined that about half of the San Joaquin Valley had experience subsidence; that’s approximately 5,200 square miles impacted since the discovery of subsidence in the area in the 1930s. Galloway, and Falk Amelung. Text, images and data credit Michelle Sneed, USGS 2015. Back to top top. Michelle Sneed ABSTRACT This report summarizes hydraulic and mechanical properties affecting ground-water flow and aquifer-system compaction in the San Joaquin Valley, a broad alluviated intermontane structural trough that constitutes the southern two-thirds of the Central Valley of California. Using old USGS well-completion reports and drilling logs, Sneed pinned down the last-recorded locations of 25 different extensometers, which were scattered across 18 different sites. ", "There was no trace of anything at many of the sites," Dillon said. Its weeklong mission: to explore strange new locations, to seek out abandoned scientific technologies, to boldly go where no scientist has gone before (at least in a few decades). Groundwater has been a major source of agricultural, municipal, and domestic water supply since the early 1920s in the Coachella Valley, California, USA. Detailed Description. Geological Groundwater has been a major source of agricultural, municipal, and domestic water supply since the early 1920s in the Coachella Valley, California, USA. Groundwater has been a major source of agricultural, municipal, and domestic supply in the valley since the early 1920s. USGS Photo by David Dillon (Public domain.). That’s if – of course – the extensometer will allow her to see that far, as the borehole may be obstructed. Once Sneed has a better picture of the state of the recovered extensometers, she can begin to prioritize them for refurbishment. Land subsidence isn't unique to California, however. Find contact's direct phone number, email address, work history, and more. The goal of the trip was to locate extensometers that had been installed by the USGS or their collaborators in the 1950s and 60s, but had since been discontinued. The report, “Land subsidence along the Delta-Mendota Canal in the northern part of the San Joaquin Valley, California, 2003-10: USGS Scientific Investigations Report 2013–5142,” by Michelle Sneed, Justin Brandt and Mike Solt, is available online. resultant land subsidence between 1926 and 1970-locally exceeding 8 But if you’re on the coast, it’s a big problem. "We were also surprised by the rapid rate of (sinking)." ), "Who knows what’s down there?" Sneed2 1Department of Land Air and Water Survey Western Remote Sensing and Visualization Center, Sacramento. Text, Images and data credit Michelle Sneed, USGS 2015 P304 data from UNAVCO; 2004-10 water-level data from Luhdorff and Scalmanini Consulting Engineers. “We were surprised at the amount of land being affected,” Michelle Sneed, a USGS hydrologist and the report’s lead author. That’s a … More Videos. However, when groundwater levels decline to historically low levels, those randomly-oriented sediments are rearranged into stacks (your neatly-stacked plates in the cupboard). Public domain.) Sediment cores were collected in the Cache … Michelle Sneed is a hydrologist with the U.S. Geological Survey and has been with the California Water Science Center since 1994. Regional aquifer-system compaction and land subsidence accompanying groundwater abstraction in susceptible aquifer systems in the USA is a challenge for managing groundwater resources and mitigating associated hazards. Some areas had even experienced dozens of feet of subsidence. ; Borchers, James W.; … Michelle has 1 job listed on their profile. An extensometer is a tool that is used to evaluate the compaction and expansion of the aquifer system. Credit for all numbered figures: “U.S. "How can groundwater managers address compaction in accordance with their Groundwater Sustainability Plans if they don’t know where it’s happening?". Only verified researchers can join ResearchGate and send messages to other members. meters (m). of the Interior, U.S. Geological Survey [Reston, Va] 2003 "For decades, we didn’t know anything about their conditions. U.S. Geological Survey Fact Sheet 096-03. U.S. Geological Survey scientist Michelle Sneed shows where a farmer would have been standing in 1988, before a six-year drought triggered sinking in California’s San Joaquin Valley. You don't recognize it until you start seeing damage,” says Michelle Sneed, a land subsidence specialist at the U.S. Geological Survey and co-author on the paper. With that basic understanding of the location and foundational condition of the extensometers, Sneed plans on learning more about the newly re-discovered pieces of equipment through the helpful use of down-hole cameras deployed down the extensometer boreholes. Abstract . “We were also surprised by the rapid rate of (sinking).” These randomly-oriented sediment grains have a lot of room between them to store water. Casing breaks are essentially a deal breaker for restoration.". Sneed, Michelle, Brandt, Justin, and Solt, Mike, 2013, Land subsidence along the Delta-Mendota Canal in the northern part of the San Joaquin Valley, California, 2003-10: U.S. Geological Survey Scientific Investigations Report 2013-5142, 87 p. Bicycle Lake Playa, located in the Mojave Desert of Southern California, has long been used as a runway for aircraft operations at the U.S. Army’s WIRED recently spoke to USGS scientists, Michelle Sneed (California Water Science Center) and Patrick Barnard (Pacific Coastal and Marine Science Center) about the effects of subsidence and their global implications. If you have infrastructure that crosses long areas, it's a big problem. Michelle Sneed, a USGS hydrologist who is an expert on land subsidence in California, was tasked to confirm the results. Developments in the assessment of regional subsidence provide more information to constrain analyses and simulation of aquifer-syst... Francis Corbett1, Thomas Harter1 and Michelle “The land sinking itself is not a problem. Fine-grained sediments like clays and silts within an aquifer system are the main culprits of pumping-related subsidence. These water-level … Land subsidence in the United States is inextricably linked to the development of groundwater—one of the Nation’s most valuable natural resources. You don't recognize it until you start seeing damage,” says Michelle Sneed, a land subsidence specialist at the U.S. Geological Survey and coauthor on the paper. She received her BS and MS degrees in geology from California State University, Sacramento, where she periodically teaches geology classes. "We were surprised at the amount of land being affected," said Michelle Sneed, a USGS hydrologist and the report's lead author. Fort Irwin National 2U.S. The idea is to see if they can be brought up to snuff at a reduced cost compared to building new ones. The importation of surface water beginning in the early 1950s through the Delta-Mendota Canal and in the early 1970s through the … WIRED recently spoke to USGS scientists, Michelle Sneed (California Water Science Center) and Patrick Barnard (Pacific Coastal and Marine Science Center) about the effects of subsidence and their global implications. Michelle Sneed Land Subsidence Specialist U.S. Geological Survey 6000 J Street, Placer Hall Sacramento, CA 95819 916.278.3000 ... U.S. Geological Survey - Water Resources of California. Example of a San Joaquin Valley extensometer the USGS restored in 2012. The first report, U.S. Geological Survey (USGS) Water-Resources Investigations Report 03-4015 by Sneed and others (2003), describes historical subsidence and groundwater-level changes in the southwest Mojave Desert from 1969 to 1999. Groundwater pumping in the Bicycle Basin in the northern Mojave Desert, one of the major sources of water supply at Fort Irwin National Training Center (NTC), California, has increased since the 1990s. "Finding these older ones is the first step in determining if they could be refurbished. A 'read' is counted each time someone views a publication summary (such as the title, abstract, and list of authors), clicks on a figure, or views or downloads the full-text. To help offset the monitoring gap, … By Michelle Sneed, Justin Brandt, and Mike Solt. We wanted to go out and find these other ones, and see if it could be done to them, too. Center. Training Fine-grained sediments are special because they are composed of platy grains (imagine the shape of dinner plates). If you have deep wells, they’re collapsing because of subsidence. USGS Hydrologist Michelle Sneed stands next to the Delta Mendota Canal in the Central Valley pointing to an area where the concrete lining is cracked and buckled. Recently, five additional groundwater production wells were constructed to increase the water supply; the new wells are scheduled to begin pumping in 2017. The first report, U.S. Geological Survey (USGS) Water-Resources Investigations Report 03-4015 by Sneed and others (2003), describes historical subsidence and groundwater-level changes in the southwest Mojave Desert from 1969 to 1999. View Michelle Sneed’s profile on LinkedIn, the world's largest professional community. The development of a large earth fissure (~0.5 km length) across the airstrip in 2005 has led to concern over the future use of the playa as an operational runwa... Land subsidence caused by ground-water extraction is a long-standing problem in An extensometer borehole, found in the San Joaquin Valley. 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