Distribution and Transport of Emerging Contaminants in Streams
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![Adding Rhodamine WT dye to Fourmile Creek, IA, during a dye-tracing test to determine the distribution and transport of emerging contaminants in streams](photos/in_streams/AddingDye_sm.jpg)
Adding Rhodamine WT dye to Fourmile Creek, IA, during a dye-tracing
test to determine the distribution and transport of emerging contaminants
in streams
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![Discharge from a wastewater treatment plant on Fourmile Creek, IA. USGS scientists have been studying the fate and transport of emerging contaminants in the Creek](photos/in_streams/Outfall_2_sm.jpg)
Discharge from a wastewater treatment plant
on Fourmile Creek, IA. USGS scientists have been studying the fate
and transport of emerging contaminants in the Creek
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![Wastewater treatment plant in the Fourmile Creek, IA, watershed. The discharge from plants such as this one are potential sources of emerging contaminants in streams](photos/in_streams/FMC_WWTP_sm.jpg)
Wastewater treatment plant in the Fourmile Creek, IA, watershed. The
discharge from plants such as this one are potential sources of emerging
contaminants in streams
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![A view of Fourmile Creek, IA, at the upper end of the reach where USGS scientists studied the fate of emerging contaminants in the stream](photos/in_streams/FourmileCreekUpper_sm.jpg)
A view of Fourmile Creek, IA, at the upper end of the reach where
USGS scientists studied the fate of emerging contaminants in the stream
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![USGS technician measuring the discharge of Fourmile Creek, IA, using standard USGS techniques during a dye-tracing test](photos/in_streams/FMC_DischargeM_1_sm.jpg)
USGS technician measuring the discharge of Fourmile Creek, IA, using
standard USGS techniques during a dye-tracing test
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![Collecting discharge data for Fourmile Creek, IA, to be used in calculating the loads of emerging contaminants in the stream](photos/in_streams/FMC_DischargeM_2_sm.jpg)
Collecting discharge data for Fourmile Creek, IA, to be used in calculating
the loads of emerging contaminants in the stream
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Downloading water-quality data from a multiparameter sonde onto a
field computer during an investigation of the fate of emerging contaminants
in Fourmile Creek, IA |
![The lower end of the Fourmile Creek, IA, study reach where USGS scientists investigated the processes that control the distribution of emerging contaminants in the stream](photos/in_streams/FourmileCreekLower_sm.jpg)
The lower end of the Fourmile Creek, IA, study reach where USGS scientists
investigated the processes that control the distribution of emerging
contaminants in the stream
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![A view of Boulder Creek, CO, at the 75th Street Bridge just downstream of where a wastewater treatment plant discharges effluent into the stream](photos/in_streams/75thStreetBridge_sm.jpg)
A view of Boulder Creek, CO, at the 75th Street Bridge just downstream
of where a wastewater treatment plant discharges effluent into the
stream
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![USGS technician measuring streamflow in Bolder Creek, CO, near the 75th Street Bridge site during an investigation of the fate of emerging contaminants in streams](photos/in_streams/BC_Sampling05_sm.jpg)
USGS technician measuring streamflow in Bolder Creek, CO, near the
75th Street Bridge site during an investigation of the fate of emerging
contaminants in streams
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![USGS scientists cleaning sample-processing equipment prior to taking a water sample from Bounder Creek, CO](photos/in_streams/BC_Sampling01_sm.jpg)
USGS scientists cleaning sample-processing equipment prior to taking
a water sample from Bounder Creek, CO
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![USGS scientists collecting water-quality samples for the analysis of emerging contaminants, Boulder Creek, CO](photos/in_streams/BC_Sampling02_sm.jpg)
USGS scientists collecting water-quality samples for the analysis
of emerging contaminants, Boulder Creek, CO
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![Collecting a depth-integrated water sample from Boulder Creek, CO, using the equal-width-increment (EWI ) method](photos/in_streams/BC_Sampling03_sm.jpg)
Collecting a depth-integrated water sample
from Boulder Creek, CO, using the equal-width-increment (EWI
) method
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![The scientist on the right is holding a 3-liter polytetrafluoroethylene bottle used to composite the depth-integrated samples being collected by the scientist on the left, Boulder Creek, CO. The composite sample consists of multiple depth-integrated samples collected from the stream cross section](photos/in_streams/BC_Sampling06_sm.jpg)
The scientist on the right is holding a 3-liter
polytetrafluoroethylene bottle used to composite the depth-integrated
samples being collected by the scientist on the left, Boulder Creek,
CO. The composite sample consists of multiple depth-integrated samples
collected from the stream cross section
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![The scientists are transferring one of several depth-integrated samples collected from Boulder Creek, CO, into a 3-liter polytetrafluoroethylene storage bottle](photos/in_streams/BC_Sampling07_sm.jpg)
The scientists are transferring one of several
depth-integrated samples collected from Boulder Creek, CO, into a
3-liter polytetrafluoroethylene storage bottle
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![USGS scientists are preparing a cone splitter that is used to separate a composite sample into several subsamples. Each subsample will be analyzed for a suite of emerging contaminants, such as pharmaceuticals and antibiotics, that may be present in Boulder Creek, CO](photos/in_streams/BC_Sampling04_sm.jpg)
USGS scientists are preparing a cone splitter
that is used to separate a composite sample into several subsamples.
Each subsample will be analyzed for a suite of emerging contaminants,
such as pharmaceuticals and antibiotics, that may be present in Boulder
Creek, CO
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