Martha G Nielsen
Martha Nielsen is a Hydrologist with the Upper Midwest Water Science Center.
Science and Products
New England Water Use
Background The U.S. Geological Survey has compiled the Nation's water-use data at the county, State, and national levels every 5 years between 1950 and 2015. A summary for New England is presented on this web page. Water use estimates for 2000 through 2020 are now available for the three largest categories of use in the United States: self-supplied thermoelectric power generation, self-supplied...
Connecticut Water Use
Background The U.S. Geological Survey has compiled the Nation's water-use data at the county, State, and national levels every 5 years between 1950 and 2015 . - The New England Water Science Center (WSC) collected, reviewed, and aggregated water withdrawal data in Massachusetts from different sources (groundwater and surface water in both fresh and saline settings) as a part of the national effort...
Maine Water Use
Background The U.S. Geological Survey has compiled the Nation's water-use data at the county, State, and national levels every 5 years between 1950 and 2015 . - The New England Water Science Center (WSC) collected, reviewed, and aggregated water withdrawal data in Massachusetts from different sources (groundwater and surface water in both fresh and saline settings) as a part of the national effort...
New Hampshire Water Use
Background The U.S. Geological Survey has compiled the Nation's water-use data at the county, State, and national levels every 5 years between 1950 and 2015 . - The New England Water Science Center (WSC) collected, reviewed, and aggregated water withdrawal data in Massachusetts from different sources (groundwater and surface water in both fresh and saline settings) as a part of the national effort...
Rhode Island Water Use
Background The U.S. Geological Survey has compiled the Nation's water-use data at the county, State, and national levels every 5 years between 1950 and 2015 . - The New England Water Science Center (WSC) collected, reviewed, and aggregated water withdrawal data in Massachusetts from different sources (groundwater and surface water in both fresh and saline settings) as a part of the national effort...
Massachusetts Water Use
Background The U.S. Geological Survey has compiled the Nation's water-use data at the county, State, and national levels every 5 years between 1950 and 2015 . - The New England Water Science Center (WSC) collected, reviewed, and aggregated water withdrawal data in Massachusetts from different sources (groundwater and surface water in both fresh and saline settings) as a part of the national effort...
Data for improved understanding of the susceptibility of Lake Superior to threats from groundwater contamination
This data release contains a data compilation and analysis of the hydrogeology in the U.S. portion of the Lake Superior watershed, for the purpose of providing background data for future study and modeling of groundwater and contaminant movement in the watershed. The data support an analysis of groundwater contributions to the water budget of Lake Superior and provide hydrogeologic context for fut
Model archive and output files for net infiltration, runoff, and irrigation water use for the Mississippi Embayment Regional Aquifer System, 2000 to 2020, simulated with the Soil-Water-Balance model
This item provides Soil-Water-Balance (SWB) model output and a model archive of water budget simulations for the Mississippi Embayment Regional Aquifer System (MERAS) during the period 2000 to 2020. Gridded daily data (1 kilometer resolution) include net infiltration (groundwater recharge), rejected net infiltration, runoff, irrigation, actual evapotranspiration and gross precipitation The model
Prototype updated principal aquifer datasets for three aquifer systems in the Upper Midwest, USA
This geospatial dataset represents a prototype of a finer-scale representation of the principal aquifers of the United States, using four original principal aquifers in the Upper Midwest, United States, which were re-analyzed and condensed into three updated principal aquifers. The original principal aquifer definitions and extents were published in the Ground Water Atlas of the United States at
Soil-Water-Balance (SWB) model archive used to simulate potential annual recharge for the former Badger Army Ammunition Plant study area, Prairie du Sac, Wisconsin, 1980 to 2020
This model archive makes available the U.S. Geological Survey Soil-Water-Balance (SWB) model created in support of a groundwater flow model of the former Badger Army Ammunition Plant in Sauk County, Wisconsin. The SWB model provides initial estimates of potential recharge to the groundwater system in the study area, which are used in a calibrated 3-dimensional MODFLOW (modular finite-difference fl
Upper Midwest Water Science Center Groundwater Model Archive Index v1.0 2023
This vector geospatial dataset contains bounding polygons that visualize the domain of archived groundwater flow models published by the Upper Midwest Water Science Center and attributes pertaining to the associated publication (citation, year of publication, authors, report ID, publication URL), model construction details, and a URL for publicly available model archives when available or a direct
OFR 2021-1008 MODEL ARCHIVE: Soil-Water-Balance model developed to simulate net infiltration and irrigation water use for the Mississippi Embayment Regional Aquifer System, 1915 to 2018
This model archive makes available the calibrated Soil-Water-Balance (SWB) model used to simulate potential recharge for the Mississippi Alluvial Aquifer for 1915 to 2018. The model was calibrated using monthly values of evapotranspiration and annual values of runoff and recharge for 19 drainage basins selected from within or nearby the Mississippi Alluvial Aquifer system. The calibrated SWB model
Filter Total Items: 25
Updated estimates of water budget components for the Mississippi Embayment Region using a soil-water-balance model, 2000–2020
A Soil-Water-Balance (SWB) model for the Mississippi embayment region in Arkansas, Tennessee, Mississippi, and Louisiana was constructed and calibrated to gain insight into potential recharge patterns for the Mississippi River Valley alluvial aquifer, which has had substantial drawdown under intense pumping stress over the last several decades. An analysis of the net infiltration term from the SWB
Authors
Martha G. Nielsen, Stephen, M. Westenbroek
Documentation of a pilot workflow for reanalyzing the U.S. Geological Survey principal aquifers datasets and prototype principal aquifer version 2 dataset for three aquifer systems
A pilot workflow to refine the principal aquifers of the United States as defined in the Ground Water Atlas of the United States and create a new version of the principal aquifers (referred to as “version 2”) is documented in this report. The workflow incorporates decision points for creating finer scale spatial data for the principal aquifers and refining the original principal aquifer definition
Authors
Martha G. Nielsen
Simulation of groundwater flow at the former Badger Army Ammunition Plant, Sauk County, Wisconsin
To help support remedial efforts at the former Badger Army Ammunition Plant the U.S. Geological Survey built and calibrated a transient groundwater flow model using the Newton Raphson formulation (MODFLOW–NWT) of the U.S. Geological Survey’s modular three-dimensional finite-difference code. The model simulates the groundwater flow system at the site from 1984 to 2020. The former Badger Army Ammuni
Authors
Megan J. Haserodt, Howard W. Reeves, Martha G. Nielsen, Laura A. Schachter, Nicholas T. Corson-Dosch, Daniel T. Feinstein
Initial estimates of net infiltration and irrigation from a soil-water-balance model of the Mississippi Embayment Regional Aquifer Study Area
The Mississippi embayment encompasses about 100,000 square miles and covers parts of eight States. In 2016, the U.S. Geological Survey began updating previous work for a part of the embayment known as the Mississippi Alluvial Plain to support informed water use and agricultural policy in the region. Groundwater, water use, economic, and other related models are being combined with field surveys an
Authors
Stephen, M. Westenbroek, Martha G. Nielsen, David E. Ladd
Estimated groundwater withdrawals from principal aquifers in the United States, 2015
In 2015, about 84,600 million gallons per day (Mgal/d) of groundwater were withdrawn in the United States for various uses including public supply, self-supplied domestic, industrial, mining, thermoelectric power, aquaculture, livestock, and irrigation. Of this total, about 94 percent (79,200 Mgal/d) was withdrawn from principal aquifers, which are defined as regionally extensive aquifers or aquif
Authors
John K. Lovelace, Martha G. Nielsen, Amy L. Read, Chid J. Murphy, Molly A. Maupin
Groundwater recharge estimates for Maine using a Soil-Water-Balance model—25-year average, range, and uncertainty, 1991 to 2015
To address the lack of information on the spatial and temporal variability of recharge to groundwater systems in Maine, a study was initiated in cooperation with the Maine Geological Survey to use the U.S. Geological Survey Soil-Water-Balance model to evaluate annual average potential recharge across the State over a 25-year period from 1991 to 2015. The Maine Soil-Water-Balance model was calibrat
Authors
Martha G. Nielsen, Stephen M. Westenbroek
Science and Products
New England Water Use
Background The U.S. Geological Survey has compiled the Nation's water-use data at the county, State, and national levels every 5 years between 1950 and 2015. A summary for New England is presented on this web page. Water use estimates for 2000 through 2020 are now available for the three largest categories of use in the United States: self-supplied thermoelectric power generation, self-supplied...
Connecticut Water Use
Background The U.S. Geological Survey has compiled the Nation's water-use data at the county, State, and national levels every 5 years between 1950 and 2015 . - The New England Water Science Center (WSC) collected, reviewed, and aggregated water withdrawal data in Massachusetts from different sources (groundwater and surface water in both fresh and saline settings) as a part of the national effort...
Maine Water Use
Background The U.S. Geological Survey has compiled the Nation's water-use data at the county, State, and national levels every 5 years between 1950 and 2015 . - The New England Water Science Center (WSC) collected, reviewed, and aggregated water withdrawal data in Massachusetts from different sources (groundwater and surface water in both fresh and saline settings) as a part of the national effort...
New Hampshire Water Use
Background The U.S. Geological Survey has compiled the Nation's water-use data at the county, State, and national levels every 5 years between 1950 and 2015 . - The New England Water Science Center (WSC) collected, reviewed, and aggregated water withdrawal data in Massachusetts from different sources (groundwater and surface water in both fresh and saline settings) as a part of the national effort...
Rhode Island Water Use
Background The U.S. Geological Survey has compiled the Nation's water-use data at the county, State, and national levels every 5 years between 1950 and 2015 . - The New England Water Science Center (WSC) collected, reviewed, and aggregated water withdrawal data in Massachusetts from different sources (groundwater and surface water in both fresh and saline settings) as a part of the national effort...
Massachusetts Water Use
Background The U.S. Geological Survey has compiled the Nation's water-use data at the county, State, and national levels every 5 years between 1950 and 2015 . - The New England Water Science Center (WSC) collected, reviewed, and aggregated water withdrawal data in Massachusetts from different sources (groundwater and surface water in both fresh and saline settings) as a part of the national effort...
Data for improved understanding of the susceptibility of Lake Superior to threats from groundwater contamination
This data release contains a data compilation and analysis of the hydrogeology in the U.S. portion of the Lake Superior watershed, for the purpose of providing background data for future study and modeling of groundwater and contaminant movement in the watershed. The data support an analysis of groundwater contributions to the water budget of Lake Superior and provide hydrogeologic context for fut
Model archive and output files for net infiltration, runoff, and irrigation water use for the Mississippi Embayment Regional Aquifer System, 2000 to 2020, simulated with the Soil-Water-Balance model
This item provides Soil-Water-Balance (SWB) model output and a model archive of water budget simulations for the Mississippi Embayment Regional Aquifer System (MERAS) during the period 2000 to 2020. Gridded daily data (1 kilometer resolution) include net infiltration (groundwater recharge), rejected net infiltration, runoff, irrigation, actual evapotranspiration and gross precipitation The model
Prototype updated principal aquifer datasets for three aquifer systems in the Upper Midwest, USA
This geospatial dataset represents a prototype of a finer-scale representation of the principal aquifers of the United States, using four original principal aquifers in the Upper Midwest, United States, which were re-analyzed and condensed into three updated principal aquifers. The original principal aquifer definitions and extents were published in the Ground Water Atlas of the United States at
Soil-Water-Balance (SWB) model archive used to simulate potential annual recharge for the former Badger Army Ammunition Plant study area, Prairie du Sac, Wisconsin, 1980 to 2020
This model archive makes available the U.S. Geological Survey Soil-Water-Balance (SWB) model created in support of a groundwater flow model of the former Badger Army Ammunition Plant in Sauk County, Wisconsin. The SWB model provides initial estimates of potential recharge to the groundwater system in the study area, which are used in a calibrated 3-dimensional MODFLOW (modular finite-difference fl
Upper Midwest Water Science Center Groundwater Model Archive Index v1.0 2023
This vector geospatial dataset contains bounding polygons that visualize the domain of archived groundwater flow models published by the Upper Midwest Water Science Center and attributes pertaining to the associated publication (citation, year of publication, authors, report ID, publication URL), model construction details, and a URL for publicly available model archives when available or a direct
OFR 2021-1008 MODEL ARCHIVE: Soil-Water-Balance model developed to simulate net infiltration and irrigation water use for the Mississippi Embayment Regional Aquifer System, 1915 to 2018
This model archive makes available the calibrated Soil-Water-Balance (SWB) model used to simulate potential recharge for the Mississippi Alluvial Aquifer for 1915 to 2018. The model was calibrated using monthly values of evapotranspiration and annual values of runoff and recharge for 19 drainage basins selected from within or nearby the Mississippi Alluvial Aquifer system. The calibrated SWB model
Filter Total Items: 25
Updated estimates of water budget components for the Mississippi Embayment Region using a soil-water-balance model, 2000–2020
A Soil-Water-Balance (SWB) model for the Mississippi embayment region in Arkansas, Tennessee, Mississippi, and Louisiana was constructed and calibrated to gain insight into potential recharge patterns for the Mississippi River Valley alluvial aquifer, which has had substantial drawdown under intense pumping stress over the last several decades. An analysis of the net infiltration term from the SWB
Authors
Martha G. Nielsen, Stephen, M. Westenbroek
Documentation of a pilot workflow for reanalyzing the U.S. Geological Survey principal aquifers datasets and prototype principal aquifer version 2 dataset for three aquifer systems
A pilot workflow to refine the principal aquifers of the United States as defined in the Ground Water Atlas of the United States and create a new version of the principal aquifers (referred to as “version 2”) is documented in this report. The workflow incorporates decision points for creating finer scale spatial data for the principal aquifers and refining the original principal aquifer definition
Authors
Martha G. Nielsen
Simulation of groundwater flow at the former Badger Army Ammunition Plant, Sauk County, Wisconsin
To help support remedial efforts at the former Badger Army Ammunition Plant the U.S. Geological Survey built and calibrated a transient groundwater flow model using the Newton Raphson formulation (MODFLOW–NWT) of the U.S. Geological Survey’s modular three-dimensional finite-difference code. The model simulates the groundwater flow system at the site from 1984 to 2020. The former Badger Army Ammuni
Authors
Megan J. Haserodt, Howard W. Reeves, Martha G. Nielsen, Laura A. Schachter, Nicholas T. Corson-Dosch, Daniel T. Feinstein
Initial estimates of net infiltration and irrigation from a soil-water-balance model of the Mississippi Embayment Regional Aquifer Study Area
The Mississippi embayment encompasses about 100,000 square miles and covers parts of eight States. In 2016, the U.S. Geological Survey began updating previous work for a part of the embayment known as the Mississippi Alluvial Plain to support informed water use and agricultural policy in the region. Groundwater, water use, economic, and other related models are being combined with field surveys an
Authors
Stephen, M. Westenbroek, Martha G. Nielsen, David E. Ladd
Estimated groundwater withdrawals from principal aquifers in the United States, 2015
In 2015, about 84,600 million gallons per day (Mgal/d) of groundwater were withdrawn in the United States for various uses including public supply, self-supplied domestic, industrial, mining, thermoelectric power, aquaculture, livestock, and irrigation. Of this total, about 94 percent (79,200 Mgal/d) was withdrawn from principal aquifers, which are defined as regionally extensive aquifers or aquif
Authors
John K. Lovelace, Martha G. Nielsen, Amy L. Read, Chid J. Murphy, Molly A. Maupin
Groundwater recharge estimates for Maine using a Soil-Water-Balance model—25-year average, range, and uncertainty, 1991 to 2015
To address the lack of information on the spatial and temporal variability of recharge to groundwater systems in Maine, a study was initiated in cooperation with the Maine Geological Survey to use the U.S. Geological Survey Soil-Water-Balance model to evaluate annual average potential recharge across the State over a 25-year period from 1991 to 2015. The Maine Soil-Water-Balance model was calibrat
Authors
Martha G. Nielsen, Stephen M. Westenbroek