This privacy statement was last changed on , September 17, 2024 , and applies to citizens and legal permanent residents of the United States.
In this privacy statement, we explain what we do with the data we obtain about you via https://hydrofocus.com. We recommend you carefully read this statement. In our processing we comply with the requirements of privacy legislation. That means, among other things, that:
If you have any questions, or want to know exactly what data we keep of you, please contact us.
We may collect or receive personal information for a number of purposes connected with our business operations which may include the following:
The following categories of data are collected
Retention period - We retain this data until the service is terminated.
The following categories of data are collected
Retention period - We retain this data until the service is terminated.
The following categories of data are collected
Retention period - We retain this data until the service is terminated.
We disclose personal information if we are required by law or by a court order, in response to a law enforcement agency, to the extent permitted under other provisions of law, to provide information, or for an investigation on a matter related to public safety.
If our website or organisation is taken over, sold, or involved in a merger or acquisition, your details may be disclosed to our advisers and any prospective purchasers and will be passed on to the new owners.
Our website does not respond to and does not support the Do Not Track (DNT) header request field.
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We are committed to the security of personal data. We take appropriate security measures to limit abuse of and unauthorized access to personal data. This ensures that only the necessary persons have access to your data, that access to the data is protected, and that our security measures are regularly reviewed.
This privacy statement does not apply to third-party websites connected by links on our website. We cannot guarantee that these third parties handle your personal data in a reliable or secure manner. We recommend you read the privacy statements of these websites prior to making use of these websites.
We reserve the right to make amendments to this privacy statement. It is recommended that you consult this privacy statement regularly in order to be aware of any changes. In addition, we will actively inform you wherever possible.
If you have any questions or want to know which personal data we have about you, please contact us. Please make sure to always clearly state who you are, so that we can be certain that we do not modify or delete any data of the wrong person. We shall provide the requested information only upon receipt of a verifiable consumer request. You can contact us by using the information below. You have the following rights:
This section, which supplements the rest of this Privacy Statement, applies to citizens and legal permanent residents of California (CPRA)
A consumer shall have the right to request that a business that collects personal information about the consumer disclose to the consumer the following:
A consumer shall have the right to request that a business that sells the consumer’s personal information, or that discloses it for a business purpose, disclose to that consumer:
A consumer shall have the right to request that a business delete any personal information about the consumer which the business has collected from the consumer.
A business that receives a verifiable request from a consumer to delete the consumer’s personal information pursuant to subdivision (a) of this section shall delete the consumer’s personal information from its records and direct any service providers to delete the consumer’s personal information from their records.
A business or a service provider shall not be required to comply with a consumer’s request to delete the consumer’s personal information if it is necessary for the business or service provider to maintain the consumer’s personal information in order to:
You may submit a request directing us not to make certain disclosures of personal information we maintain about you. For more information about the possibility of submitting an opt-out request, please refer to our Opt-out preferences page.
We have not sold consumers’ personal data in the preceding 12 months
We have not disclosed consumers’ personal information for a business purpose in the preceding 12 months.
Our website is not designed to attract children and it is not our intent to collect personal data from children under the age of consent in their country of residence. We therefore request that children under the age of consent do not submit any personal data to us.
HydroFocus Inc.
2827 Spafford Street
Davis, CA 95618
United States
Website: https://hydrofocus.com
Email:
Phone number: (530) 759-2484
Qualifications
Marc joined HydroFocus in May of 2019. Before that, he worked with the USGS California Water Science Center. On the HydroFocus team, Marc primarily assists with the development of hydrologic models, water quality analysis, and subsidence evaluation. His specialties include GIS, data management, and programming solutions.
Marc holds a Bachelors of Science in Hydrology from the University of California, Davis. Marc is currently working towards a Masters of Science in Soil Science at UC Davis focusing on the development of advanced tools for soil classification.
Professional Experience
2019 to present
Assistant Hydrologist, HydroFocus, Inc. Davis, California.
Qualifications
Nick Christen’s background is in meteorology and climate science. He holds a Bachelor of Science degree in Earth Science from San Francisco State University. His undergraduate research there included statistical analysis of high-resolution precipitation model forecasts and simulations. In 2018, he joined the HydroFocus team where his focus includes biometeorology and quantification of greenhouse gas (GHG) fluxes and net ecosystem carbon balance of systems. He has over six years of experience collecting, processing and analyzing field data and procuring high quality datasets. Other areas of his work include developing maps in ArcGIS Software, digital imagery analysis, groundwater and land surface elevation measurements, and water quality data collection.
Professional Experience
2024 to Present
Ecosystem Scientist, HydroFocus, Inc. —Davis, CA
2021 to 2024
Associate Ecosystem Scientist, HydroFocus, Inc. —Davis, CA
2018 to 2021
Hydrolocal Technician, HydroFocus, Inc. —Davis, CA
2017-2018
Data Analyst, StormGeo Shipping — Sunnyvale, CA
Academic Background
Thesis title: Statistically evaluating high-resolution model precipitation forecasts and simulations in the San Francisco Bay Area
Qualifications
Steven Deverel has over 30 years of hydrologic problem-solving experience in the western United States. Dr. Deverel analyzes groundwater systems, quantifies chemical and physical processes in soils and groundwater, and evaluates groundwater- and surface-water quality. He is a registered Professional Hydrologist certified by the American Institute of Hydrology, a California licensed Professional Geologist and a Texas licensed Professional Geoscientist.
Dr. Deverel:
Professional Experience
February 1996 to present
Consulting Hydrologist in Private Practice and Principal Hydrologist and co-founder, HydroFocus, Inc. since January 1998—Davis, CA
Recent example experience includes the following.
1994 to 1996
Senior Hydrologist, Hydrologic Consultants, Inc.—Davis, CA
Consulting assignments included the following:
1991 to 1994
Supervisory Hydrologist, U.S. Geological Survey—Sacramento, CA
Assistant District Chief: Guided hydrologic research, investigations and data collection programs throughout California:
1984 to 1991
Research Geochemist, U.S. Geological Survey—Sacramento, CA
Project leader: Directed studies of processes affecting constituent mobility and transport. Evaluated transport processes in aqueous and gaseous phases. Conducted regional, subregional and local scale studies. Guided an interdisciplinary team that integrated multi-scaled data:
Academic Background
Professional Affilications
Relevant Publications
Vadose-Zone Hydrology, Biogeochemistry and Subsidence
Deverel, Steven J.; Bachand, Sandra; Brandenberg, Scott J.; Jones, Cathleen E.; Stewart, Jonathan P.; & Zimmaro, Paolo. 2016. Factors and Processes Affecting Levee System Vulnerability. San Francisco Estuary and Watershed Science, 14(4). jmie_sfewss_33460. Retrieved from: http://escholarship.org/uc/item/36t9s0mp
Deverel, Steven J., Ingrum, T., Lucero, Cl, and Drexler, J.Z., 2014, Impounded Marshes on Subsided Islands: Simulated Vertical Accretion, Processes, and Effects, Sacramento-San Joaquin Delta, CA USA. San Francisco Estuary and Watershed Science 12(2). jmie_sfews_12893. http://escholarship.org/uc/item/0qm0w92c.
Jaclyn A. Hatala, Matteo Detto, Oliver Sonnentag, Steven J. Deverel, Joseph Verfaillie, Dennis D. Baldocchi, 2012, Greenhouse gas (CO2, CH4, H2O) fluxes from drained and flooded agricultural peatlands in the Sacramento-San Joaquin Delta, Agriculture, Ecosystems and Environment , 150,1-18.
Cathleen Jones, Gerald Bawden, Steven Deverel, Joel Dudas, Scott Hensley, 2011, Characterizing land surface changes and levee stability in the Sacramento-San Joaquin Delta using UAVSAR radar imagery, IGARSS2011 Proceedings
Deverel, S.J. and Leighton, D.A., 2010, Historic, recent and future subsidence, Sacramento-San Joaquin Delta, California, USA, San Francisco Estuary and Watershed Science, 8(2) http://www.escholarship.org/uc/item/7xd4x0xw
Drexler, Judith Z., de Fontaine, Christian S., Deverel, S.J., 2009, The legacy of wetland drainage on the peat resource in the Sacramento-San Joaquin Delta, California, USA, Wetlands, 29, 372–386
Deverel, S.J., Thomas, J., Decker, D., Earman, S. and Mihevc, T, 2005, Groundwater evaporation estimates using stable isotope and chloride data, Yelland Playa, Spring Valley, Nevada, Desert Research Institute Division of Hydrologic Sciences, DHS publication 41219
D.A. Cohen, S.J. Deverel, L.A. Johnson, 1998, Feasibility Study of Differential SAR Interferometry for Subsidence Monitoring in the Sacramento-San Joaquin Delta, IGARSS'98 Proceedings , pp1629-1631
Deverel, S.J., Wang, Bronwen and Rojstaczer, S.A., 1998, Subsidence in the Sacramento-San Joaquin Delta, in (Borchers, J.W., ed.) Proceedings of the Joseph Poland Subsidence Symposium, Association of Engineering Geologists, Special Publication No. 8, Star Publishing, Belmont, California, pp. 489-502.
Deverel, S.J., Rojstazcer, S.A. 1996, Subsidence of agricultural lands in the Sacramento-San Joaquin Delta, California: Role of aqueous and gaseous carbon fluxes, Water Resources Research, 32, 2359-2367.
Rojstazcer, S.A. and Deverel, S.J., 1995, Land subsidence in drained histosols and highly organic mineral soils of California, Soil Science Society of America Journal, 59:1162-1167.
Rojstaczer, S.A. and Deverel, S.J., 1993, Time dependence in atmospheric carbon inputs from drainage of organic soils, Geophysical Research Letters, 20, 1383-1386.
Fio, J.L., Fujii, R. and Deverel, S.J., 1991, Evaluation of selenium mobility in soil using sorption experiments and a numerical model, western San Joaquin Valley, California, Soil Science Society of America Journal, 55, 1313-1320.
Rojstaczer, S.A., Hamon, R.E., Deverel, S.J. and Massey, C.A., 1991, Evaluation of selected data to assess the causes of subsidence in the Sacramento-San Joaquin Delta, California, U.S. Geological Survey Open File Report 91 -193.
Fujii, Roger, Deverel, S.J. and D.B. Hatfield, 1988, Distribution of selenium in soils of agricultural fields, Western San Joaquin Valley, California, Soil Science Society America Journal, 52, 1274-1283.
Deverel, S.J., L.D. Whittig and K.K. Tanji, 1986, Sulfate reduction and calcium carbonate equilibria in a Central California histosol, Soil Science Society of America Journal, 50, 1189-1193.
Tanji, K.K., and Deverel, S.J., 1984, Simulation modeling for reclamation of sodic soils, in Soil salinity under irrigation-processes and management, Shainberg, I., and Shalhevet, J., eds., Springer-Verlag, Berlin
Groundwater Geochemistry and Quality
Deverel, S.J., Goldberg, S. and R. Fujii, 2012, Chemistry of trace elements in soils and groundwater In Tanji et al (eds) Agricultural Salinity Assessment and Management Manual, American Society of Civil Engineers. Manual 71, 2nd edition.
Deverel, S.J., Leighton, David A. and Finlay, Mark R., 2007. Processes Affecting Agricultural Drainwater Quality and Organic Carbon Loads in California's Sacramento-San Joaquin Delta. San Francisco Estuary and Watershed Science. Vol. 5, Issue 2 (May), Article 2. http://repositories.cdlib.org/jmie/sfews/vol5/iss2/art2
Deverel, S.J., Fio, J.L., Dubrovsky, N.M., 1994, Distribution and mobility of selenium in groundwater in the western San Joaquin Valley of California in Selenium in the Environment, Benson, S. and Frankenburger, W. (eds). Marcel Decker, New York.
Dubrovsky, N.M., Deverel, S.J. and Gilliom, R.J., 1993, Multiscale approach to regional groundwater quality assessment: selenium in the San Joaquin Valley, California in Regional Ground-water Quality (Alley, W.M, editor), Van Nostrand Reinhold, New York.
Deverel, S.J. and Fio, J.L., 1991, Groundwater flow and solute movement to drain laterals, western San Joaquin Valley, California. I. Geochemical assessment, Water Resources Research, 27, 2233 - 2246.
Deverel, S.J. and R. Fujii, 1990, Chemistry of trace elements in soils and groundwater In Tanji et al (eds) Agricultural Salinity Assessment and Management Manual, American Society of Civil Engineers.
McNeal, J.M., Feder, G.L., Wilbur, W.G. and Deverel, S.J., 1990, Environmental concerns related to selenium in the Western United States in Proceedings of a U.S. Geological Survey Workshop on Environmental Geochemistry (Doe, B.R., ed.) U.S. Geological Survey Circular 1033.
Deverel, S.J. and S.P. Millard, 1988, Distribution and mobility of selenium and other trace elements in shallow ground water of the western San Joaquin Valley, California, Environmental Science and Technology, 22, 697-702.
Deverel, S.J. and Roger Fujii, 1988, Processes affecting the distribution of selenium in shallow groundwater of agricultural areas, Western San Joaquin Valley, California, Water Resources Research, 24, 516-524.
Fujii, Roger and S.J. Deverel, 1988, Mobility and distribution of selenium and salinity In groundwater and soil of drained agricultural fields, western San Joaquin Valley, California: In Jacobs, L.W. and others (ed.), Selenium in Agriculture and the Environment: American Society of Agronomy, Madison, Wisconsin, Special Publication no. 23, pp. 195-212.
Deverel, S.J., Gilliom, R.J., Fujii, Roger, Izbicki, J.A., and Fields, J.C., 1984, Distribution of selenium and other inorganic constituents in shallow ground water of the San Luis Drain Service Area, San Joaquin Valley, California: A preliminary study, U.S. Geological Survey Water Resources Investigation Report 84-4319.
Deverel, S.J., 1985, Selenium in the San Joaquin Valley of California In 1984 National Water Summary, U.S.G.S. Water Supply Paper 2275.
Statistics
Deverel, S.J., 1989, Geostatistical and principal-component analysis of ground-water chemistry and soil-salinity data, San Joaquin Valley, California, In Ragone, S. (ed.) Regional characterization of water quality, International Association of Hydrologic Sciences Publication no. 182 pp. 11-18.
Millard, S.P. and S.J. Deverel, 1988, Non-parametric statistical methods for comparing two sites based on data with multiple non-detect limits, Water Resources Research, 24, 2087-2098.
Ground Water Hydrology
Deverel, S.J. and Gallanthine, S.K., 1989, Distribution of salinity and selenium in relation to hydrologic and geochemical processes, San Joaquin Valley, California, Journal of Hydrology 109, 125-149.
Deverel, S.J., 1988, Geohydrologic aspects of water-quality problems of the San Joaquin Valley, California, Proceedings on Planning Now for Irrigation and Drainage, Irrigation and Drainage Division, American Society of Civil Engineers, Lincoln, Nebraska, July, 1988 pp. 694-699 (invited paper).
Fio, J.L. and Deverel, S.J., 1991, Groundwater flow and solute movement to drain laterals, western San Joaquin Valley, California, II. Quantitative hydrologic assessment, Water Resources Research, 27, 2247 - 2257.
Fio, J.L. and Deverel, S.J., 1990, Interaction of shallow ground water and subsurface drains: Implications for selenium transport and distribution in the western San Joaquin Valley, Groundwater, 28,788-789.
Sustainability
Deverel, Steven J.; Bachand, Sandra; Brandenberg, Scott J.; Jones, Cathleen E.; Stewart, Jonathan P.; & Zimmaro, Paolo, 2016. Factors and Processes Affecting Delta Levee System Vulnerability. San Francisco Estuary and Watershed Science, 14(4). jmie_sfews_33460. Retrieved from: http://escholarship.org/uc/item/36t9s0mp
Deverel, Steven J.; Lucero, Christina E.; & Bachand, Sandra. 2015. Evolution of Arability and Land Use, Sacramento–San Joaquin Delta, California. San Francisco Estuary and Watershed Science, 13(2). jmie_sfews_27914. Retrieved from: http://escholarship.org/uc/item/5nv2698k
Deverel, S.J., 2012, Impacts of irrigation in California, USA and relevance for the Brazilian semi-arid region (in Portuguese), ITEM, Irrigação e Tecnologia Moderna, Publication of the Brazilian Association of Irrigation and Drainage