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DATAFLOW Data

Dataflow instrument

The surface mapping program collects data every 4 seconds aboard a moving boat, using an instrument suite known as DATAFLOW. DATAFLOW uses a pump on the transom of the boat to feed surface water through a chamber where water quality is measured by a sonde/instrument similar to those used in the continuous monitoring program. The water quality data are geo-referenced with a GPS unit and recorded in an onboard computer. The boat follows a path that records surface water quality both in nearshore shallow areas and mid-channel areas of rivers and the Chesapeake. Data are used to assess water quality criteria, particularly the extent of acceptable habitat for underwater grasses. Data are also used to assess the scale of events such as algal blooms or runoff and pinpoint regions that require management action to improve water quality.


DATAFLOW Data Download:
(2001 - 2016)

Quality Assured DATAFLOW data have been through rigorous Quality Assurance and Quality Control. Download our DATAFLOW data directly based on sampling location and sampling date.

  • Select a Sampling Location, then Choose Sampling Date(s):
    Please wait for sampling dates to load after highlighting a water body
    Tributary/Water Body:
    (Select one only)
    Sampling Dates:
    Hold down CTRL-key to select up to 21 dates


    Check your download folder for your data file, filename: "EOTBDataflowData_TributaryName.csv".

     



DATAFLOW Data Integrated Surface Maps:

Use our DataFlow Map Query to view integrated surface map data based on a station and date of your choosing.

  • Select Water Bodies, then Choose Sampling Date(s)
    Hold down CTRL-key to select multiple tributaries or sampling dates
    Tributary/Water Body:
    Sampling Dates: