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MODPATH particle-tracking analysis of groundwater flow and travel times to the Barnegat Bay-Little Egg Harbor estuary and streams within the Barnegat Bay-Little Egg Harbor watershed, New Jersey

Metadata Updated: February 14, 2024

A groundwater-flow model that was previously developed by the U. S. Geological Survey of Ocean County, N.J. ( was used in an analysis of groundwater flow in the Kirkwood-Cohansey aquifer system and deeper confined aquifers that underlie the Barnegat Bay-Little Egg Harbor (BB-LEH) watershed and estuary. The analysis used a MODFLOW2005 simulation, in conjunction with the particle-tracking computer program MODPATH (Pollock, 1994), to delineate particle flow paths, the discharge location of each particle, and estimate the travel time along flow paths to the BB LEH estuary and streams within the BB-LEH watershed. This study conducted by the USGS, in cooperation with the Barnegat Bay Partnership, also provided an assessment of the quantity of, and the potential nitrogen concentration in, groundwater that flows directly into the BB-LEH estuary or adjoining coastal wetlands and groundwater that discharges to streams that eventually flow into the estuary. Groundwater discharge to surface water is an important contaminant transport pathway that can result in degraded surface-water quality and habitats in the New Jersey Coastal Plain. This USGS data release contains all of the input and output files for the simulations described in the associated model documentation report (

Access & Use Information

Public: This dataset is intended for public access and use. License: No license information was provided. If this work was prepared by an officer or employee of the United States government as part of that person's official duties it is considered a U.S. Government Work.

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Metadata Created Date June 1, 2023
Metadata Updated Date February 14, 2024

Metadata Source

Harvested from DOI EDI

Additional Metadata

Resource Type Dataset
Metadata Created Date June 1, 2023
Metadata Updated Date February 14, 2024
Publisher U.S. Geological Survey
Identifier USGS:faa0693c-93e5-4352-9695-db579798034a
Data Last Modified 20201117
Category geospatial
Public Access Level public
Bureau Code 010:12
Metadata Context
Metadata Catalog ID
Schema Version
Catalog Describedby
Harvest Object Id f6f59d53-7a15-4324-beef-6f50f6097e79
Harvest Source Id 52bfcc16-6e15-478f-809a-b1bc76f1aeda
Harvest Source Title DOI EDI
Metadata Type geospatial
Old Spatial -74.634006,39.432992,-73.901659,40.239449
Publisher Hierarchy White House > U.S. Department of the Interior > U.S. Geological Survey
Source Datajson Identifier True
Source Hash fc27a2899e2a51c6133b19c24e7870c8401f9fc4db3d2d1b5b0a6fa1ef0feacd
Source Schema Version 1.1
Spatial {"type": "Polygon", "coordinates": -74.634006, 39.432992, -74.634006, 40.239449, -73.901659, 40.239449, -73.901659, 39.432992, -74.634006, 39.432992}

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