This dataset contains data collected in 2019 from the Dan River upstream of its confluence with Big Creek at US Highway 89 in North Carolina.

GIS shapefile data
Survey data
Sediment data
Uplooking velocity data
Cross section velocity data
Pressure transducer data

Complied by Jon Czuba, Virginia Tech, jczuba@vt.edu, on 13 February 2023.


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GIS SHAPEFILE DATA:

Dan_JSM_survey_shapefiles.zip
/LP3_snapped.shp
/LP3_rawGPS.shp
/LP2_snapped.shp
/LP1_snapped.shp
/LP1_measured.shp
/Dan_JSM_XS_survey_points_snapped.shp
/Dan_JSM_XS_survey_points_measured.shp
/Dan_JSM_LP_cl_clip.shp

Contains ArcGIS shapefiles associated with the survey data. All data is in NAD 83 UTM 17N meters. 


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SURVEY DATA:

Dan_JSM_Survey_FINAL_XS_analysis.xlsx

Contains the survey data for 4 cross sections, long profile (3 pieces and composite), and extra points of interest.

All data is in NAD 83 UTM 17N meters and NGVD88 meters. 

27 June 2019:
cross sections 1 and 2
long profile 1

25 July 2019:
cross sections 3 and 4
long profile 2

24 July 2019:
long profile 3

The biggest uncertainties/errors are with cross section 4, and long profiles 2 and 3.

The stage on 6/27 and 7/25 were the same. 
The stage on 7/24 was 0.11 m higher, and was accounted for in processing by lowering the water surface elevation (WSEL) from that day down by 0.11 m to create a composite 6/27 (or 7/25) WSEL for the reach.


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SEDIMENT DATA:

Sediment_Data.xlsx

Contains the sediment grain size distribution data for sieved sand samples and point counts for gravel.


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UPLOOKING VELOCITY DATA:

XS1_velocity(HW89).xlsx
XS2_velocity(HW89US).xlsx

Contains the GPS location of each sensor, date/time, depth, velocity, shear velocity, water temperature, and water-surface elevation.


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CROSS SECTION VELOCITY DATA:

velocity_data_6_27_2019_final.xlsx

Contains the velocity measurement data that were made at cross-sections 1 and 2 on 27 June 2019 using a Marsh-McBirney Flo-Mate 2000 electromagnetic velocity meter as wading-discharge measurements. 
At each location, velocity measurements were made every 4 feet along the cross sections (to measure at least 20 verticals) with a point velocity measured at 0.6 depth or as an average of 0.2, 0.6, and 0.8 depth where the depth was greater than 1.5 feet. 
During these measurements, a survey tape was stretched across each cross section, 0 feet at the left bank.
The spatial locations of some of the stationing was surveyed during the 27 June 2019 survey and noted for specific survey points.
Those data can help the end user spatially locate these velocity measurements if desired.


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PRESSURE TRANSDUCER DATA:

DanJSM_Stage_Temp.xlsx

Contains pressure and temperature data from two pressure transducers.
These sensors are Onset HOBO water level data loggers (pressure and temperature sensor; Onset, Bourne, Massachusetts).
They were deployed between 24 May 2019 and 6 November 2019 and recorded data at 15-min intervals. 
One pressure transducer was placed in a tree in the right floodplain.
The other was placed in the stream along the right bank just upstream of cross-section 1.
The location of the in-stream pressure transducer was surveyed during the 27 June 2019 survey.
Depth above the sensor at the in-stream pressure transducer was calculated by differencing the in-stream pressure from the atmospheric pressure.
Both sensors started recording before they were in position, so the first (and last) several hours of data recorded by the in-stream sensor were out of water.
The in-stream sensor may have been above the water line during some of the period of data collection (elevation values can be confirmed by comparing with the survey and uplooking velocity data).