Skip to main content
USGS - science for a changing world

Delineation of the Freshwater-Saltwater Interface at Selected Public-Supply Wells Using Advanced Surface and Borehole Geophysical Techniques, in Eastern Suffolk County, New York

Dates

End Date
2016-09-30

Summary

The combination of a complex hydrogeologic framework, narrow land masses surrounded by saltwater, and extensive ground-water public-supply pumpage has produced localized areas of elevated chloride concentrations in ground water. This project uses advanced surface and borehole geophysical methods to determine the extent of saltwater intrusion and road-salt plumes at selected sites in eastern Suffolk County, Long Island, NY. Two-dimensional resistivity sections have been integrated with borehole geophysical logs and water-quality data to produce cross-sections of road-salt plumes. Borehole geophysical logs are collected twice a year to determine variations in chloride concentration and thicknesses of intrusive saltwater wedges or [...]

Contacts

Principal Investigator :
Frederick Stumm
Funding Agency :
Suffolk County Water Authority, Cooperative Water Program

Attached Files

Click on title to download individual files attached to this item or download all files listed below as a compressed file.

LK00-FJB01-Fig1.jpg
“USGS demonstrating borehole geophysical method for detection of chloride plumes”
thumbnail 4.48 MB
Shapefile: SuffolkCounty_Hydrogeo.zip
SuffolkCounty_Hydrogeo.shp 412 Bytes
SuffolkCounty_Hydrogeo.dbf 73 Bytes
SuffolkCounty_Hydrogeo.shx 108 Bytes
SuffolkCounty_Hydrogeo.prj 424 Bytes

Project Extension

projectStatusActive
parts
typeShort Project Description
valueThe combination of a complex hydrogeologic framework, narrow land masses surrounded by saltwater, and extensive ground-water public-supply pumpage has produced localized areas of elevated chloride concentrations in ground water. This project uses advanced surface and borehole geophysical methods to determine the extent of saltwater intrusion and road-salt plumes at selected sites in eastern Suffolk County, Long Island, NY.

Preview Image

Map

Spatial Services

ScienceBase WMS

ScienceBase WFS

Communities

  • USGS New York Water Science Center

Tags

Provenance

DEPTH-

Additional Information

Alternate Titles

  • SCWA Geophysics

Identifiers

Type Scheme Key
projectId BASIS+ LK00-FJB01

Shapefile Extension

boundingBox
minY40.49892867037575
minX-73.5373412986224
maxY41.34176601004073
maxX-71.69854445663718
nameSuffolkCounty_Hydrogeo
files
nameSuffolkCounty_Hydrogeo.shp
contentTypex-gis/x-shapefile
pathOnDisk__disk__19/04/5a/19045af74661540a96e90eaadf21a52b297dd453
size412
dateUploadedTue Mar 08 11:27:26 MST 2016
nameSuffolkCounty_Hydrogeo.dbf
contentTypeapplication/unknown
pathOnDisk__disk__07/6a/e6/076ae68bb36a3692685258c27fa7d484c5c455ad
size73
dateUploadedTue Mar 08 11:27:26 MST 2016
nameSuffolkCounty_Hydrogeo.shx
contentTypex-gis/x-shapefile
pathOnDisk__disk__07/65/d1/0765d15a0ce5f0aea8a7b36547f8574343eaa7ff
size108
dateUploadedTue Mar 08 11:27:26 MST 2016
nameSuffolkCounty_Hydrogeo.prj
contentTypetext/plain
pathOnDisk__disk__cd/e7/ae/cde7aecbb83de98d281d0b77fb74c3071fe80a19
size424
dateUploadedTue Mar 08 11:27:26 MST 2016
nativeCrsEPSG:26918
geometryTypeMultiPolygon

Item Actions

View Item as ...

Save Item as ...