README.TXT

The files contained here consist of data to support the findings in "Water-Temperatures in Select Nearshore Environments of the Colorado River in Grand Canyon, Arizona during the Low Summer Steady Flow Experiment of 2000" by William S. Vernieu (Available at http://pubs.usgs.gov/of/2013/1066/.)

Each file is named for one of the fourteen study sites that were described in the report, excluding spaces or punctuation. For example, the file "RK1416R_25.csv" contains data collected at the RK 141.6R study site with a 25-m thermistor string. The "site" field in the data file contains the value "RK 141.6R 25m". The fourteen study sites are summarized in Table 3 of the report.

Files are in comma-separated-values format (.csv) and may be opened directly in Microsoft Excel or other spreadsheet software. The field names in each data file vary, depending on the length of the thermistor string used at the site, because of the different number and location of each temperature sensor. All temperature values are expressed in degrees Celsius (deg C) and are displayed in hundredths of degrees.

The field names, attributes, and descriptions for each thermistor string are as follows:

5-m Thermistor Strings
Files:
RK1411L_05.csv
RK2213L_05.csv
RK2313L_05.csv
RK3259R_05.csv

Field Name	Attributes		Description

site		up to 13 characters	Contains the name of the site, including 
					river-channel distance in kilometers
					from Lees Ferry, and the length of the 
					thermistor string. 
					For example, "RK 141.1L 5m"
date		mm/dd/yy		Date of collection (mm-month, dd-day, 
					yy-year)
time		hh:mm			Time of collection, in military time 
					(hh-hour, mm-minute)
0.5m		deg C			Temperature of 0.5-m temperature sensor
0.5m_diff	deg C			Difference between 0.5-m temperature 
					sensor and 5-m temperature sensor
1m		deg C			Temperature of 1-m temperature sensor
1m_diff		deg C			Difference between 1-m temperature sensor 
					and 5-m temperature sensor
2m		deg C			Temperature of 2-m temperature sensor
2m_diff		deg C			Difference between 2-m temperature sensor 
					and 5-m temperature sensor
3m		deg C			Temperature of 3-m temperature sensor
3m_diff		deg C			Difference between 3-m temperature sensor 
					and 5-m temperature sensor
5m		deg C			Temperature of 5-m temperature sensor
5m_diff		deg C			Difference between 5-m temperature sensor 
					and 5-m temperature sensor

-----------------------------------------------------------------------------------
10-m Thermistor Strings
Files:
RK1046L_10.csv
RK1413L_10.csv
RK2213L_10.csv
RK2263L_10.csv
RK3259R_10.csv

Field Name	Attributes		Description

site		up to 13 characters	Contains the name of the site, including 
					river-channel distance in kilometers
					from Lees Ferry, and the length of the 
					thermistor string. 
					For example, "RK 104.6L 10m"
date		mm/dd/yy		Date of collection (mm-month, dd-day, 
					yy-year)
time		hh:mm			Time of collection, in military time 
					(hh-hour, mm-minute)
1m		deg C			Temperature of 1-m temperature sensor
1m_diff		deg C			Difference between 1-m temperature sensor 
					and river temperature sensor
2m		deg C			Temperature of 2-m temperature sensor
2m_diff		deg C			Difference between 2-m temperature sensor 
					and river temperature sensor
3m		deg C			Temperature of 3-m temperature sensor
3m_diff		deg C			Difference between 3-m temperature sensor 
					and river temperature sensor
5m		deg C			Temperature of 5-m temperature sensor
5m_diff		deg C			Difference between 5-m temperature sensor 
					and river temperature sensor
10m		deg C			Temperature of 10-m temperature sensor
10m_diff	deg C			Difference between 10-m temperature sensor 
					and river temperature sensor
river		deg C			Temperature of river temperature sensor
river_diff	deg C			Difference between river temperature sensor 
					and river temperature sensor

-----------------------------------------------------------------------------------
15-m Thermistor Strings
Files:
RK-159R_15.csv
RK4162L_15.csv

Field Name	Attributes		Description

site		up to 13 characters	Contains the name of the site, including 
					river-channel distance in kilometers
					from Lees Ferry, and the length of the 
					thermistor string. 
					For example, "RK -15.9R 15m"
date		mm/dd/yy		Date of collection (mm-month, dd-day, 
					yy-year)
time		hh:mm			Time of collection, in military time 
					(hh-hour, mm-minute)
1m		deg C			Temperature of 1-m temperature sensor
1m_diff		deg C			Difference between 1-m temperature sensor 
					and 15-m temperature sensor
2m		deg C			Temperature of 2-m temperature sensor
2m_diff		deg C			Difference between 2-m temperature sensor 
					and 15-m temperature sensor
3m		deg C			Temperature of 3-m temperature sensor
3m_diff		deg C			Difference between 3-m temperature sensor 
					and 15-m temperature sensor
5m		deg C			Temperature of 5-m temperature sensor
5m_diff		deg C			Difference between 5-m temperature sensor 
					and 15-m temperature sensor
10m		deg C			Temperature of 10-m temperature sensor
10m_diff	deg C			Difference between 10-m temperature sensor 
					and 15-m temperature sensor
15m		deg C			Temperature of 15-m temperature sensor
15m_diff	deg C			Difference between 15-m temperature sensor 
					and 15-m temperature sensor
-----------------------------------------------------------------------------------
25-m Thermistor Strings
Files:
RK1022L_25.csv
RK1416R_25.csv
RK3259R_25.csv

Field Name	Attributes		Description

site		up to 13 characters	Contains the name of the site, including 
					river-channel distance in kilometers
					from Lees Ferry, and the length of the 
					thermistor string. 
					For example, "RK 102.2L 25m"
date		mm/dd/yy		Date of collection (mm-month, dd-day, 
					yy-year)
time		hh:mm			Time of collection, in military time 
					(hh-hour, mm-minute)
2m		deg C			Temperature of 2-m temperature sensor
2m_diff		deg C			Difference between 2-m temperature sensor 
					and 27-m temperature sensor
5m		deg C			Temperature of 5-m temperature sensor
5m_diff		deg C			Difference between 5-m temperature sensor 
					and 27-m temperature sensor
15m		deg C			Temperature of 15-m temperature sensor
15m_diff	deg C			Difference between 15-m temperature sensor 
					and 27-m temperature sensor
25m		deg C			Temperature of 25-m temperature sensor
25m_diff	deg C			Difference between 25-m temperature sensor 
					and 27-m temperature sensor
27m		deg C			Temperature of 27-m temperature sensor
27m_diff	deg C			Difference between 27-m temperature sensor 
					and 27-m temperature sensor