Skip to main content

Martha G Nielsen

Martha Nielsen is a Hydrologist with the Upper Midwest Water Science Center.

Science and Products

link
New England states

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. The most recent estimated water-use compilation was completed in 2015. A summary for New England is presented on this web page. Issue Comprehensive water-use data analysis is needed to quantify the stress on existing supplies, particularly...
By
New England Water Science Center
link

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. The most recent estimated water-use compilation was completed in 2015. A summary for New England is presented on this web page. Issue Comprehensive water-use data analysis is needed to quantify the stress on existing supplies, particularly...
Learn More
link
Connecticut outlines

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 most recent estimated water-use compilation was completed in 2015. A summary for Connecticut is presented on this web page. Issue Comprehensive water-use data analysis is needed to quantify the stress on existing supplies, particularly...
By
New England Water Science Center
link

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 most recent estimated water-use compilation was completed in 2015. A summary for Connecticut is presented on this web page. Issue Comprehensive water-use data analysis is needed to quantify the stress on existing supplies, particularly...
Learn More
link
Maine outlines

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 most recent estimated water-use compilation was completed in 2015. A summary for Maine is presented on this web page. Issue Comprehensive water-use data analysis is needed to quantify the stress on existing supplies, particularly during...
By
Water Availability and Use Science Program, New England Water Science Center
link

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 most recent estimated water-use compilation was completed in 2015. A summary for Maine is presented on this web page. Issue Comprehensive water-use data analysis is needed to quantify the stress on existing supplies, particularly during...
Learn More
link
Massachusetts outline

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 most recent estimated water-use compilation was completed in 2015. A summary for Massachusetts is presented on this web page. Issue Comprehensive water-use data analysis is needed to quantify the stress on existing supplies, particularly...
By
Water Availability and Use Science Program, New England Water Science Center
link

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 most recent estimated water-use compilation was completed in 2015. A summary for Massachusetts is presented on this web page. Issue Comprehensive water-use data analysis is needed to quantify the stress on existing supplies, particularly...
Learn More
link
New Hampshire outlines

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 most recent estimated water-use compilation was completed in 2015. A summary for New Hampshire is presented on this web page. Issue Comprehensive water-use data analysis is needed to quantify the stress on existing supplies, particularly...
By
Water Availability and Use Science Program, New England Water Science Center
link

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 most recent estimated water-use compilation was completed in 2015. A summary for New Hampshire is presented on this web page. Issue Comprehensive water-use data analysis is needed to quantify the stress on existing supplies, particularly...
Learn More
link
Rhode Island outlines

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 most recent estimated water-use compilation was completed in 2015. A summary for Rhode Island is presented on this web page. Issue Comprehensive water-use data analysis is needed to quantify the stress on existing supplies, particularly...
By
Water Availability and Use Science Program, New England Water Science Center
link

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 most recent estimated water-use compilation was completed in 2015. A summary for Rhode Island is presented on this web page. Issue Comprehensive water-use data analysis is needed to quantify the stress on existing supplies, particularly...
Learn More
link
Vermont outlines

Vermont 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 most recent estimated water-use compilation was completed in 2015. A summary for Vermont is presented on this web page. Issue Comprehensive water-use data analysis is needed to quantify the stress on existing supplies, particularly during...
By
Water Availability and Use Science Program, New England Water Science Center
link

Vermont 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 most recent estimated water-use compilation was completed in 2015. A summary for Vermont is presented on this web page. Issue Comprehensive water-use data analysis is needed to quantify the stress on existing supplies, particularly during...
Learn More
link
Hydrologic soil groups of the Maine Soil-Water-Balance model

Recharge Estimates for Maine: 25-year Average, Range, and Uncertainty, 1990-2015

The USGS Soil-Water-Balance model (SWB) has been used to estimate potential recharge across the State of Maine. The average and range (minimum and maximum) of annual recharge were estimated for the 25-year period from 1990 to 2015. Datasets of estimated recharge and the modeled uncertainty in the recharge estimates are available for download.
By
New England Water Science Center
link

Recharge Estimates for Maine: 25-year Average, Range, and Uncertainty, 1990-2015

The USGS Soil-Water-Balance model (SWB) has been used to estimate potential recharge across the State of Maine. The average and range (minimum and maximum) of annual recharge were estimated for the 25-year period from 1990 to 2015. Datasets of estimated recharge and the modeled uncertainty in the recharge estimates are available for download.
Learn More

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
By
Upper Midwest Environmental Sciences Center, Upper Midwest Water Science Center

OFR 2021-1008 MODEL OUTPUT: Soil-Water-Balance net infiltration and irrigation water use output datasets for the Mississippi Embayment Regional Aquifer System, 1915 to 2018

This data release includes four sets of gridded annual net infiltration (groundwater recharge) and irrigation water use data sets for the Mississippi Embayment Regional Aquifer System (MERAS).Also included are gridded water balance component data sets of precipitation, runoff, actual evapotranspiration, and soil-water storage for 2000 to 2018. The net infiltration, irrigation, runoff, actual evapo
By
Upper Midwest Environmental Sciences Center, Upper Midwest Water Science Center

Estimated Groundwater Withdrawals from Principal Aquifers in the United States--County Level Data for 2015

This dataset contains estimates of water withdrawals from 66 principal aquifers and "other" non-principal aquifers during 2015 for various categories of use in each county or county equivalent in the United States, Puerto Rico, and the U.S. Virgin Islands. The U.S. Geological Survey's (USGS) National Water Use Science Project is responsible for compiling and disseminating the Nation's water-use da
By
Lower Mississippi-Gulf Water Science Center

Simulated 25-year potential annual recharge datasets for Maine, 1991-2015

This set of data includes four potential annual recharge grids for the State of Maine that were simulated using the Maine Soil-Water-Balance model for 1991 through 2015. The files include a grid representing the uncertainty in the potential recharge and a grid showing the annual average precipitation from the climate dataset that the simulation is based on. A 25-year simulation of potential rechar
By
New England Water Science Center

Soil-Water-Balance (SWB) model archive used to simulate potential annual recharge in Maine, 1991-2015

This set of data includes four potential annual recharge grids for the State of Maine that were simulated using the Maine Soil-Water-Balance model for 1991 through 2015. The files include a grid representing the uncertainty in the potential recharge and a grid showing the annual average precipitation from the climate dataset that the simulation is based on. A 25-year simulation of potential rechar
By
New England Water Science Center

Data related to the degree of potential human influence near 2228 groundwater wells in the U.S. glacial aquifer system

This dataset contains information on the degree of potential human influence near 2228 groundwater wells in the U.S. glacial aquifer system. Data include well identification, name, latitude, longitude, potential-human-influence category, percent urban and crop land use in a 500 meter radius around each well, and measures of county-based groundwater use and irrigation.
By
New England Water Science Center, New England Water Science Center
Filter Total Items: 22

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
By
Water Resources, Lower Mississippi-Gulf Water Science Center, Upper Midwest Environmental Sciences Center, Upper Midwest Water Science Center

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
By
Lower Mississippi-Gulf Water Science Center

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
By
Water Resources, New England Water Science Center

The Connecticut Streamflow and Sustainable Water Use Estimator—A decision-support tool to estimate water availability at ungaged stream locations in Connecticut

Freshwater streams in Connecticut are subject to many competing demands, including public water supply; agricultural, commercial, and industrial water use; and ecosystem and habitat needs. In recent years, drought has further stressed Connecticut’s water resources. To sustainably allocate and manage water resources among these competing uses, Federal, State, and local water-resource managers requi
By
Water Resources, New England Water Science Center

Groundwater-level trends in the U.S. glacial aquifer system, 1964-2013

The glacial aquifer system in the United States is a major source of water supply but previous work on historical groundwater trends across the system is lacking. Trends in annual minimum, mean, and maximum groundwater levels for 205 monitoring wells were analyzed across three regions of the system (East, Central, West Central) for four time periods: 1964-2013, 1974-2013, 1984-2013, and 1994-2013.
By
Water Resources, New England Water Science Center

Simulation of groundwater flow and streamflow depletion in the Branch Brook, Merriland River, and parts of the Mousam River watersheds in southern Maine

Watersheds of three streams, the Mousam River, Branch Brook, and Merriland River in southeastern Maine were investigated from 2010 through 2013 under a cooperative project between the U.S. Geological Survey and the Maine Geological Survey. The Branch Brook watershed previously had been deemed “at risk” by the Maine Geological Survey because of the proportionally large water withdrawals compared to
By
Water Resources, New England Water Science Center

Flow and sorption controls of groundwater arsenic in individual boreholes from bedrock aquifers in central Maine, USA

To understand the hydrogeochemical processes regulating well water arsenic (As) evolution in fractured bedrock aquifers, three domestic wells with [As] up to 478 μg/L are investigated in central Maine. Geophysical logging reveals that fractures near the borehole bottom contribute 70-100% of flow. Borehole and fracture water samples from various depths show significant proportions of As (up to 69%)
By
Water Resources, New England Water Science Center

Changes in nitrogen loading to the Northeast Creek Estuary, Bar Harbor, Maine, 2000 to 2010

Since 1999, the U.S. Geological Survey and the National Park Service have been monitoring land use and nitrogen loading in a 26.3-square-kilometer (10-square-mile) estuarine watershed at Acadia National Park, Mount Desert Island, Maine. The initial study linking land use and nitrogen loads entering the Northeast Creek estuary was completed in 2000, and findings were used to develop simulations of
By
Water Resources, New England Water Science Center

High-water marks from tropical storm Irene for selected river reaches in northwestern Massachusetts, August 2011

A Presidential Disaster Declaration was issued for Massachusetts, with a focus on the northwestern counties, following flooding from tropical storm Irene on August 28–29, 2011. Three to 10 inches of rain fell during the storm on soils that were susceptible to flash flooding because of wet antecedent conditions. The gage height at one U.S. Geological Survey (USGS) streamgage rose nearly 20 feet in
By
Water Resources, New England Water Science Center

Estimates of future inundation of salt marshes in response to sea-level rise in and around Acadia National Park, Maine

Salt marshes are ecosystems that provide many important ecological functions in the Gulf of Maine. The U.S. Geological Survey investigated salt marshes in and around Acadia National Park from Penobscot Bay to the Schoodic Peninsula to map the potential for landward migration of marshes using a static inundation model of a sea-level rise scenario of 60 centimeters (cm; 2 feet). The resulting inunda
By
Water Resources, New England Water Science Center

Simulation of groundwater conditions and streamflow depletion to evaluate water availability in a Freeport, Maine, watershed

In order to evaluate water availability in the State of Maine, the U.S. Geological Survey (USGS) and the Maine Geological Survey began a cooperative investigation to provide the first rigorous evaluation of watersheds deemed "at risk" because of the combination of instream flow requirements and proportionally large water withdrawals. The study area for this investigation includes the Harvey and Me
By
Water Resources, New England Water Science Center

Simulation of streamflow in the Pleasant, Narraguagus, Sheepscot, and Royal Rivers, Maine, using watershed models

The U.S. Geological Survey (USGS) began a study in 2008 to investigate anticipated changes in summer streamflows and stream temperatures in four coastal Maine river basins and the potential effects of those changes on populations of endangered Atlantic salmon. To achieve this purpose, it was necessary to characterize the quantity and timing of streamflow in these rivers by developing and evaluatin
By
Water Resources, New England Water Science Center

Science and Products