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A database of groundwater wells in the United States

Nature Portfolio (Springer Nature) | April 4th, 2024

Summary

Groundwater wells are critical infrastructure that enable the monitoring, extraction, and use of groundwater, which has important implications for the environment, water

Groundwater wells are critical infrastructure that enable the monitoring, extraction, and use of groundwater, which has important implications for the environment, water security, and economic development. Despite the importance of wells, a unified database collecting and standardizing information on the characteristics and locations of these wells across the United States has been lacking. To bridge this gap, we have created a comprehensive database of groundwater well records collected from state and federal agencies, which we call the United States Groundwater Well Database (USGWD). Presented in both tabular form and as vector points, USGWD comprises over 14.2 million well records with attributes, such as well purpose, location, depth, and capacity, for wells constructed as far back as 1763 to 2023. Rigorous cross-verification steps have been applied to ensure the accuracy of the data. The USGWD stands as a valuable tool for improving our understanding of how groundwater is accessed and managed across various regions and sectors within the United States.

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Arsenic, chromium, uranium, and vanadium in rock, alluvium, and groundwater, Mojave River and Morongo Areas, western Mojave Desert, southern California

U.S. Geological Survey (USGS) | October 16th, 2023

Summary

Trace elements within groundwater that originate from aquifer materials and pose potential public-health hazards if consumed are known as geogenic contaminants. The geoge

Trace elements within groundwater that originate from aquifer materials and pose potential public-health hazards if consumed are known as geogenic contaminants. The geogenic contaminants arsenic, chromium, and vanadium can form negatively charged ions with oxygen known as oxyanions. Uranium complexes with bicarbonate and carbonate to form negatively charged ions having aqueous chemistry similar to oxyanions. The concentrations of arsenic, chromium, uranium, and vanadium in groundwater result from the combined effects of (1) geologic abundance within aquifer materials; (2) the fraction of these elements that have weathered from and sorbed to the surfaces of mineral grains and are potentially available to groundwater; and (3) the aqueous chemistry of dissolved oxyanions in groundwater during different redox conditions and pH, both of which are affected by hydrogeology, including the length of time groundwater has been in contact with aquifer materials. Concentrations of arsenic, chromium, uranium, and vanadium were measured in samples of (1) rock, surficial alluvium, and drill cuttings using portable (handheld) X-ray fluorescence (pXRF); (2) operationally defined fractions extractable from these materials; and (3) water from wells sampled between 2000 and 2018 within the 3,500 square mile Mojave River area and Morongo area of the western Mojave Desert, southern California.

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Bulletin 118 - California's Groundwater Update 2013

California Department of Water Resources (DWR) | April 15th, 2015

Summary

California’s Groundwater Update 2013 compiles and analyzes readily available groundwater information to characterize California’s groundwater basins, aquifers, and we

California’s Groundwater Update 2013 compiles and analyzes readily available groundwater information to characterize California’s groundwater basins, aquifers, and well infrastructure. It also presents data and analysis related to groundwater monitoring efforts, aquifer conditions in response to extraction, groundwater management practices, and conjunctive management programs. It expands and enhances baseline groundwater information on a regional scale, identifies challenges associated with sustainable groundwater management, and helps guide implementation of diverse resource management strategies. The set of data, information, and analysis developed can help local and regional groundwater managers, as well as individual well owners, better understand California’s hidden and commonly misunderstood resource. This Bulletin has been uploaded in the following separate files reflecting hydrologic regions and appendices. Chapter One / Introduction Chapter Two / State-wide Update Chapter Three / North Coast Chapter Four / San Francisco Bay Chapter Five / Central Coast Chapter Six / South Coast Chapter Seven / Sacramento River Chapter Eight / San Joaquin River Chapter Nine / Tulare Lake Chapter Ten / North Lahontan Chapter Eleven / South Lahontan Chapter Twelve / Colorado River Appendix A: Methods and Assumptions Appendix B: CASGEM Basin Prioritization Appendix C: Groundwater Use Data 2010-2015 Appendix D: Conjunctive Management Survey Appendix E: Change in Groundwater in Storage Appendix F: Subsidence

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Bulletin No. 84 Mojave River Ground Water Basins Investigation

California Department of Water Resources (DWR) | August 15th, 1967

Summary

Click here for Bulletin No. 84 maps and plates.

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California Department of Water Plan 2023: Navigating Climate Challenges with Equity and Resilience

California Department of Water Resources (DWR) | September 20th, 2023

Summary

The California Water Plan (Water Plan), updated every five years, is the State’s strategic plan for sustainably and equitably managing, developing, and stewarding water

The California Water Plan (Water Plan), updated every five years, is the State’s strategic plan for sustainably and equitably managing, developing, and stewarding water resources. Required by Water Code Section 10005, the plan presents the status and trends of California’s water-dependent natural resources; water supplies; and agricultural, urban, and environmental water demands for a range of plausible future scenarios.

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California Groundwater Conditions Update – Spring 2019

California Department of Water Resources (DWR) | October 3rd, 2022

Summary

DWR has completed an evaluation of state-wide groundwater level data reported in spring 2019 for California groundwater basins. Spring data correspond to the time period

DWR has completed an evaluation of state-wide groundwater level data reported in spring 2019 for California groundwater basins. Spring data correspond to the time period immediately before the typical irrigation season begins in a region. This helps show groundwater levels before summer crop irrigation and other uses. In Central and Northern California, the pre-irrigation season is in March, while in Southern California, that season is typically earlier. The Spring 2019 Groundwater Level Data Coverage map (Figure 1) shows a comparison between total spring 2019 reporting and typical reporting in previous years. Typical reporting includes wells with water level data submitted to DWR over the past five spring seasons (2015-2019) by CASGEM Monitoring Entities, other local agencies, and well owners. Although the reporting percentage is high and coverage is good, there are still gaps in spring 2019 coverage throughout the state, including portions of Tulare, Kern, San Bernardino, Riverside, and Imperial counties.

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California Groundwater Conditions Update – Spring 2020

California Department of Water Resources (DWR) | October 3rd, 2022

Summary

In this report, groundwater level change values compare spring 2020 to spring 2019, 2017, 2015, and 2010. The information is summarized in Table 1. Spring groundwater lev

In this report, groundwater level change values compare spring 2020 to spring 2019, 2017, 2015, and 2010. The information is summarized in Table 1. Spring groundwater level data are an important indicator of groundwater conditions because spring generally corresponds to the pre-irrigation season. This time period is representative of the water year’s peak groundwater levels. Associated maps display groundwater level increases and decreases and summarize data by hydrologic region.

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California Groundwater Conditions Update – Spring 2021 California’s drought and groundwater

California Department of Water Resources (DWR) | October 3rd, 2022

Summary

This report uses maps to depict how groundwater levels have changed over time using two different analytical methods. One method, groundwater level change maps, show the

This report uses maps to depict how groundwater levels have changed over time using two different analytical methods. One method, groundwater level change maps, show the change in groundwater levels between two different springtime measurements. The second method uses trend analysis of water levels for wells having at least 10 annual springtime measurements over a 20-year period to illustrate the statistical magnitude and direction of groundwater level change (a well’s water level increasing or decreasing trend over time). Spring groundwater level data are an important indicator of groundwater conditions because spring generally corresponds to both the pre-irrigation season and the peak groundwater levels in a water year.

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California's Groundwater Conditions Semi-Annual Update: March 2023

California Department of Water Resources (DWR) | March 15th, 2023

Summary

These updates are part of the informational resources associated with DWR’s California’s Groundwater (Bulletin 118). This report uses groundwater data received electr

These updates are part of the informational resources associated with DWR’s California’s Groundwater (Bulletin 118). This report uses groundwater data received electronically by DWR as of February 15, 2022, through the conclusion of Water Year 2022, and the start of Water Year 2023.

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California’s Groundwater Conditions Semi-Annual Update: October 2022

California Department of Water Resources (DWR) | October 15th, 2022

Summary

This report is a semi-annual update of the annual Groundwater Conditions Report published in March 2022 and part of DWR’s California’s Groundwater (Bulletin 118). Wat

This report is a semi-annual update of the annual Groundwater Conditions Report published in March 2022 and part of DWR’s California’s Groundwater (Bulletin 118). Water Year 2022 groundwater data used in this report includes data received electronically by DWR as of August 31, 2022.

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Page : 1

Type

Book/Textbook (4)
Bulletin (1)
Bulletin 118 (10)
California Water Plan (2)
Fact sheet (1)
Journal Article (4)
magazine (1)
NGO Position Paper (1)
Policy (1)
Report (5)
Strategy (1)
Technical Report (1)

Topic

Agriculture (2)
Basic Information (1)
Climate Change (4)
Drinking Water (2)
Drought & Hydrology (3)
Ecosystem & Species Management (1)
Estuary News (2)
Flood Management (1)
Geochemistry (3)
Geohydrology (6)
Groundwater (26)
Infrastructure (2)
Integrated Regional Water Management (1)
Modeling (3)
Planning & Management (6)
Policy (1)
Pollutants (1)
Sacramento-San Joaquin Delta (3)
Salinity (2)
Transfers & Markets (1)
Tribal Water Issues (1)
Water Project Operations (1)
Water Quality (4)
Water Quality Monitoring (1)
Water Supply (16)
Water Use & Efficiency (1)

Keywords

agricultural drainage (1)
agriculture water use and efficiency (1)
basin characterization (2)
California Water Plan (1)
Central Valley (1)
climate change (3)
Colorado River (1)
conjunctive use (1)
desalination (1)
drinking water (1)
ecosystem management (1)
environmental justice (1)
Estuary News (2)
fisheries (1)
flood management (1)
groundwater (30)
Groundwater Exchange (19)
groundwater recharge (1)
habitat restoration (1)
irrigation (1)
land use (1)
modeling (3)
monitoring (3)
nutrients (1)
outreach and engagement (1)
pesticides (1)
planning and management (4)
pollutants (1)
risk assessment (1)
Sacramento–San Joaquin Delta (3)
salinity (2)
stormwater (1)
subsidence (1)
Sustainable Groundwater Management Act (SGMA) (9)
tribal water issues (1)
urban water conservation (1)
water and energy (1)
water markets (1)
water quality (6)
water supply (15)
water supply forecasting (1)

Publisher

American Chemistry Society (ACS) (1)
American Geophysical Union (AGU) (4)
California Department of Water Resources (DWR) (14)
Environmental Research Letters (IOP) (1)
Nature Portfolio (Springer Nature) (2)
Public Policy Institute of California (PPIC) (3)
San Francisco Estuary Partnership (SFEP) (2)
U.S. Geological Survey (USGS) (2)
UnIversity of California, Davis (UC Davis) (1)

Basin

Coastal Plain of Los Angeles - Central 4-011.04 (1)
Lower Mojave River Valley 6-040 (3)
Middle Mojave River Valley 6-041 (3)
Morongo Valley 7-020 (1)
San Gabriel Valley 4-013 (1)
San Jacinto 8-005 (1)
Santa Clara Valley - East Bay Plain 2-009.04 (1)
Upper Mojave River Valley 6-042 (3)
Upper Santa Ana Valley - Chino 8-002.01 (1)
Upper Santa Ana Valley - Cucamonga (8-002.02) (1)
Upper Santa Ana Valley - San Bernardino 8-002.06 (1)

Hydrological Region

Central Coast (16)
Colorado River (15)
Lower Basin States and Mexico - Colorado River (2)
National (6)
North Coast (15)
North Lahontan (16)
Sacramento River (18)
San Francisco Bay (18)
San Joaquin River (19)
South Coast (17)
South Lahontan (19)
Tulare Lake (16)
Upper Basin States - Colorado River (2)

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