USGS Monthly Groundwater News and Highlights: February 1, 2017
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Featured Product: Maps and grids of hydrogeologic information of the glaciated United States
Thickness of glacial deposits in the United States. Source: Figure 6, USGS SIR 2015-5105. Credit: USGS. Image is in the public domain.
At the request of Congress, the USGS is assessing the availability and use of the Nation's water resources. Water-well drillers' records may be the single largest source of data that are available to describe the geologic deposits of the subsurface. As part of the Glacial Aquifer System Groundwater Availability Study, the USGS used about 14 million records from State-managed collections of water-well drillers' records and created a database of hydrogeologic properties for the glaciated United States. Maps and geospatial grids were developed for
- total thickness of glacial deposits,
- total thickness of coarse-grained deposits,
- specific-capacity based transmissivity and hydraulic conductivity, and
- texture-based estimated equivalent horizontal and vertical hydraulic conductivity and transmissivity.
These maps are available for download by scientists, resource managers, and the general public as part of USGS efforts to support Federal open data initiatives.
USGS Groundwater-Related Press Releases
The USGS Active Groundwater Level Network includes about 20,000 wells that have been measured by the USGS or USGS cooperators at least once within the past 13 months. The animation shows a daily snapshot of water-level statistics in the network for January 2017. Credit: USGS. The image is in the public domain.
Uranium in Spring Water North of Grand Canyon Likely Not Related to Nearby Mining Activity (01/24/17)
Groundwater Quality in the Northern Atlantic Coastal Plain Aquifer System (01/19/17)
Groundwater Quality in the Southeastern Coastal Plain Aquifer System (01/19/17)
Groundwater Quality in Eastern U.S. (01/19/17)
The Quality of the Nation's Groundwater: Progress on a National Survey (01/19/17)
Groundwater Quality in the West: Examining Basin and Range Basin-Fill Aquifers (01/19/17)
Groundwater Quality in the Coastal Lowlands Aquifer System (01/19/17)
USGS Scientist Wins Governor's Medal for Science and Technology (01/18/17)
USGS Groundwater-Related Publications
Nutrient processes at the stream-lake interface for a channelized versus unmodified stream mouth (01/26/17)
Evaluating mountain meadow groundwater response to Pinyon-Juniper and temperature in a great basin watershed (01/27/17)
Hydraulic characterization of volcanic rocks in Pahute Mesa using an integrated analysis of 16 multiple-well aquifer tests, Nevada National Security Site, 2009-14 (01/23/17)
Mobilization of mercury and arsenic from a carbonate-hosted ore deposit, central Idaho, U.S.A. (01/20/17)
An update of the Death Valley regional groundwater flow system transient model, Nevada and California (01/20/17)
Using groundwater age distributions to understand changes in methyl tert-butyl ether (MtBE) concentrations in ambient groundwater, northeastern United States (01/19/17)
Changes in the Chemistry of Groundwater Reacted with CO2: Comparison of Laboratory Results with the ZERT Field Pilot (01/19/17)
Maps and grids of hydrogeologic information created from standardized water-well drillers' records of the glaciated United States (01/30/17)
Groundwater quality in the shallow aquifers of the Tulare, Kaweah, and Tule Groundwater Basins and adjacent highlands areas, Southern San Joaquin Valley, California (01/18/17)
Methods for estimating selected low-flow frequency statistics and mean annual flow for ungaged locations on streams in North Georgia (01/13/17)
Effects of solid-liquid separation and storage on monensin attenuation in dairy waste management systems (01/12/17)
Water resources of East Feliciana Parish, Louisiana (01/13/17)
Water resources of Calcasieu Parish, Louisiana (01/13/17)
Continued geophysical logging near the GMH Electronics National Priorities List Superfund site near Roxboro, North Carolina (01/09/17)
Editor's note (01/19/17)
Groundwater quality in the Basin and Range Basin-Fill Aquifers, southwestern United States (01/19/17)
Groundwater quality in the Northern Atlantic Coastal Plain aquifer system, eastern United States (01/19/17)
Groundwater quality in the Valley and Ridge and Piedmont and Blue Ridge carbonate-rock aquifers, eastern United States (01/19/17)
Groundwater quality in the Southeastern Coastal Plain aquifer system, southeastern United States (01/19/17)
Groundwater quality in the Coastal Lowlands aquifer system, south-central United States (01/26/17)
Dissolved organic matter composition of Arctic rivers: Linking permafrost and parent material to riverine carbon (01/30/17)
Reply to "Comment on 'Near-surface location, geometry, and velocities of the Santa Monica fault zone, Los Angeles, California' by R. D. Catchings, G. Gandhok, M. R. Goldman, D. Okaya, M. J. Rymer, and G. W. Bawden" by T. L. Pratt and J. F. Dolan (01/30/17)
USGS Groundwater-Related Software Updates and New Releases
GRIDGEN v 1.0.02
Cascade Routing Tool (CRT) v1.3
Field Photo: Studying Groundwater Quality
Did you know the USGS has studied groundwater for over 100 years? With the opening of the west in the late 1860s and the emerging demand for groundwater for drinking supplies came the urgent need for systematic and scientific studies of groundwater resources. These early studies were concerned with understanding the occurrence and movement of water in aquifers that supplied flowing wells. In a flowing well, the pressure in the aquifer raises the groundwater in the well above ground level where it can be collected for use with little or no pumping. The establishment of the U.S. Geological Survey in 1879 resulted in the formation of a national organization that was to foster a strong interest in hydrogeology. In this historical photo, the USGS and U.S. Public Health Service are studying how bacteria in groundwater moves through the subsurface in order to help us understand steps needed to protect drinking water supplies.
Credit: USGS/Norah Dewell. Photo is in the public domain. Click on photo for larger version.