North of the Mason-Dixon Line— an update on issues and ...
Transcript of North of the Mason-Dixon Line— an update on issues and ...
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North of the Mason-Dixon Line—an update on issues and USGS work in the Great Valley in Pa.
Kevin Breen, P.G.Ground Water and Geochemistry Investigations Section
USGS Pennsylvania [email protected] 717-730-6970
http://pa.water.usgs.gov
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Outline of presentation
Ground-water levels on the webNitrate source tracingRechargeIssues in the Great Valley
Spring Flow Monitoring—Developing areasKarst Issues—”Bridges over troubled waters”
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New look for ICPRB-USGS Ground-water levels on the webLess Navigation to Conditions Map
Improved explanation of data
Coming soon--New W.Va. well in Mineral Co.
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Outline of presentation
Ground-water levels on the webNitrate source tracingRechargeIssues in the Great Valley
Spring Flow Monitoring—Developing areasKarst Issues—”Bridges over troubled waters”
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Nitrate in LimestoneLimestone AquifersWidespread contaminant
Treatment or blending to meet MCL
Source tracing study Martinsburg, Blair Co.
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Nitrate sources near supply wells
o Water Sources
--Geologic Framework
--Flow model
--Geochemicalindicators
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Nitrate source tracing
Multiple lines of evidenceMunicipal sewage least likely sourceManure and chemical fertilizer likely sources Results in USGS Report 2004-5124
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Outline of presentation
Ground-water levels on the webNitrate source tracingRechargeIssues in the Great Valley
Spring Flow Monitoring—Developing areasKarst Issues—”Bridges over troubled waters”
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“Bridges over troubled waters”
Bridge failure--$10 million plusSinkholes in Bushkill Creek channel are cause of collapseStream channel lining ongoing to protect structures