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Preliminary Estimates of Residence Times and Apparent Ages of Ground ...
pubs.usgs.gov/wri/wri97-4225/
A simple reservoir model, published data, and analyses of spring water were used to estimate residence times and apparent ages of ground-water ...
Preliminary estimates of residence times and apparent ages of ground ...
www.usgs.gov/publications/preliminary-estimates-residence-times-and-apparent-ages-ground-water-chesapeake-bay
This report presents preliminary estimates of ground-water residence times and apparent ages of water in the shallow aquifers of the Chesapeake Bay ...
Preliminary estimates of residence times and apparent ages of ground ...
pubs.usgs.gov/publication/wri974225
Preliminary estimates of residence times and apparent ages of ground water in the Chesapeake Bay watershed, and water-quality data from a survey of ...
Discharge, Nitrate Load, and Residence Time of Ground Water in the ...
pubs.usgs.gov/fs/fs15099/
The apparent ages (residence times) of water collected from springs range from modern (0-4 years) to more than 50 years, with 75 percent of the ages ...
USGS Links for HUC 02040202 - Lower Delaware
water.usgs.gov/lookup/getwatershed?02040202
Preliminary Estimates of Residence Times and Apparent Ages of Groundwater in the Chesapeake Bay Watershed, and Water Quality Data From a Survey of ...
USGS Links for HUC 02070009 - Monocacy
water.usgs.gov/lookup/getwatershed?02070009
Preliminary Estimates of Residence Times and Apparent Ages of Groundwater in the Chesapeake Bay Watershed, and Water Quality Data From a Survey of ...
Preliminary estimates of residence times and apparent ages of ground ...
www.usgs.gov/index.php/publications/preliminary-estimates-residence-times-and-apparent-ages-ground-water-chesapeake-bay
Knowledge of the residence times of the ground-water systems in Chesapeake Bay watershed helps resource managers anticipate potential delays between ...
Residence times and nitrate transport in ground water discharging to ...
www.usgs.gov/publications/residence-times-and-nitrate-transport-ground-water-discharging-streams-chesapeake-bay
The similarity in the ranges in apparent age of water from the wells and from the springs shows that the samples from the targeted watersheds and spri ...
[PDF] Summary of Major Findings - USGS Publications Warehouse
pubs.usgs.gov/fs/fs15099/pdf/fs150-99.pdf
flow of streams in the Chesapeake Bay watershed. • The ground-water nitrate load contributes about half (48 percent) of the total annual nitrogen load ...
USGS Groundwater Dating Lab
water.usgs.gov/lab/chlorofluorocarbons/research/chesapeake/
Data collected on ground-water residence times indicate that nutrients may take between 0-60 years to move through shallow aquifers before discharging ...
USGS Links for HUC 02040207 - Broadkill-Smyrna
water.usgs.gov/lookup/getwatershed?02040207
Preliminary Estimates of Residence Times and Apparent Ages of Groundwater in the Chesapeake Bay Watershed, and Water Quality Data From a Survey of ...
[PDF] Residence Times and Nitrate Transport in Ground Water Discharging to ...
pubs.usgs.gov/wri/2003/4035/wri20034035.pdf
U.S. Department of the Interior U.S. Geological Survey Residence Times and Nitrate Transport in Ground Water Discharging to Streams in the Chesapeake ...
Chesapeake Bay Watershed Data Dashboard | U.S. Geological Survey - USGS.gov
www.usgs.gov/centers/lower-mississippi-gulf-water-science-center/science/chesapeake-bay-watershed-data-dashboard
The U.S. Geological Survey (USGS), in partnership with the Chesapeake Bay Program (CBP) watershed water-quality monitoring network, measures changes ...
Residence times and nitrate transport in ground water discharging to ...
pubs.usgs.gov/publication/wri034035
The similarity in the ranges in apparent age of water from the wells and from the springs shows that the samples from the targeted watersheds and spri ...
USGS study: Groundwater delaying water-quality improvements on the ...
www.usgs.gov/centers/chesapeake-bay-activities/science/usgs-study-groundwater-delaying-water-quality
New research by the U.S. Geological Survey conducted on the Delmarva Peninsula, which forms the Eastern Shore of the Chesapeake Bay, indicates it may ...
Discharge, nitrate load, and residence time of ground water in the ...
pubs.usgs.gov/publication/fs15099
Descriptions of US Geological Survey Report Series ... nitrate load, and residence time of ground water in the Chesapeake Bay watershed. Fact Sheet ...
Depth to 50 percent probability of oxic conditions, Chesapeake Bay ...
www.usgs.gov/data/depth-50-percent-probability-oxic-conditions-chesapeake-bay-watershed
The probability of oxic groundwater in the Chesapeake Bay watershed was predicted by relating dissolved O2 concentrations in groundwater samples to ...
The Influence of Ground Water on Nitrogen Delivery to the Chesapeake Bay
pubs.usgs.gov/fs/2003/fs091-03/
Figure 3: Ground-water age from springs in the Chesapeake Bay watershed, 1996-1997 [The ages of ground water ranged from modern (less than 1 year) to ...
Chesapeake Bay Water-Quality Loads and Trends
www.usgs.gov/centers/chesapeake-bay-activities/science/chesapeake-bay-water-quality-loads-and-trends
Access the most recent data gathered from the Chesapeake Bay Nontidal Monitoring Network, learn about the techniques used to collect this data, and ...
Ground-Water Discharge and Base-Flow Nitrate Loads of Nontidal Streams ...
pubs.usgs.gov/wri/wri98-4059/
Existing data on base-flow and groundwater nitrate loads were compiled and analyzed to assess the significance of groundwater discharge as a source of ...