Hydrologist
Email:
mholland@usgs.gov
Office Phone:
860-291-6783
Location
339 Main Street
East Hartford
, CT
06118-0000
US
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This model archive provides input and output for Soil-Water-Balance (SWB) models developed to simulate groundwater recharge (net infiltration) for a groundwater model of watersheds on the north shore of the Long Island Sound. The simulated groundwater recharge was further refined in the calibration of the groundwater flow model, which is published in a separate ScienceBase archive (https://doi.org/10.5066/P1HKENGV). The SWB model was run from water year 2004 through water year 2022, which includes a model spin-up year to properly initialize the state of soil moisture for the first year of the desired simulation (water year 2005).
Tags: CoastalWaters,
Connecticut,
Hydrology,
InlandWaters,
Long Island Sound, All tags...
New York,
Rhode Island,
Soil-Water-Balance,
USGS Science Data Catalog (SDC),
United States,
aquifer,
geoscientificInformation,
groundwater,
groundwater flow,
hydrogeology,
inlandWaters,
mathematical modeling,
water resources, Fewer tags
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Elevated nitrogen loads are pervasive in the Long Island Sound, an estuary that receives freshwater and nutrients from both surface-water and groundwater discharge. Surface-water nitrogen loads to the Long Island Sound are relatively well characterized, but less is known about groundwater-transported nitrogen loads. The U.S. Geological Survey, in cooperation with the U.S. Environmental Protection Agency’s Long Island Sound Study and the Connecticut Department of Energy and Environmental Protection, developed a set of models to better characterize spatial and temporal patterns of groundwater-transported nitrogen loading from atmospheric deposition, septic systems, and fertilizers within the study area. The models...
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A groundwater flow model simulating average monthly conditions, using MODFLOW6, was developed to better understand groundwater flow and groundwater-transported nitrogen loads in coastal Connecticut and adjacent areas of New York and Rhode Island. Elevated nitrogen loads are a pervasive issue in the Long Island Sound, an estuary that receives freshwater and nutrients from both surface-water and groundwater discharge. Surface-water nitrogen loads to the Long Island Sound are relatively well characterized, but less is known about groundwater-transported nitrogen loads. Prior work on the northern shore of Long Island Sound (Connecticut and areas of New York and Rhode Island) suggested that groundwater travel times...
Tags: CoastalWaters,
Connecticut,
Groundwater,
Groundwater Model,
Hydrology, All tags...
InlandWaters,
Long Island Sound,
MODFLOW,
MODFLOW-NWT,
MODPATH,
New York,
Niantic River Watershed,
Rhode Island,
USGS Science Data Catalog (SDC),
Water Quality,
Water Resources,
environment,
geoscientificInformation,
inlandWaters,
nitrogen transport,
usgsgroundwatermodel, Fewer tags
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A monthly model of groundwater-transported nitrogen loads was developed for 12-digit hydrologic unit code (HUC12) watersheds on the north shore of Long Island Sound in coastal Connecticut and adjacent areas of New York and Rhode Island. As part of the analysis, potential management actions that upgraded septic systems or reduced fertilizer application to areas of turf-grass were also simulated. This compilation includes a zipped file (Tables.zip) of aggregated model outputs and datasets used in the model development. The zipped file contains a file dictionary (file_dictionary.csv) that includes the file name, title, and caption for each table and a data dictionary (data_dictionary.csv) that includes the variable...
Categories: Data;
Types: Downloadable,
Map Service,
OGC WFS Layer,
OGC WMS Layer,
Shapefile;
Tags: Connecticut,
Connecticut Coastal,
Ecology,
Hydrology,
Long Island Sound, All tags...
Marine Nearshore,
New York,
Rhode Island,
Stratified glacial sediment,
USGS Science Data Catalog (SDC),
Water Quality,
Water Resources,
glacial till,
groundwater and surface-water interaction,
groundwater flow,
groundwater level,
hydrogeology,
mathematical modeling,
nitrogen, Fewer tags
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