Stream temperature and discharge each summer, water temperature and stream discharge are determined for the Kuparuk River. In many years, temperature and stream height were recorded manually each day. In recent years, data loggers have measured stream temperature and stream height at regular intervals. The Kuparuk River data is maintained by Dough Kane on the Water and Environmental Research Center at UAF (http://www.uaf.edu/water/projects/NorthSlope/upper_kuparuk/uk_river/uk_r...) Stream height is converted into stream discharge based on a rating curve calculated from manual discharge measurements throughout the season. The principal investigator in charge of the temperature and discharge measurements is Dr. Breck Bowden.
Data set ID:
EML revision ID:
Longterm monitoring and experimentation
Stage height measurements were taken 1 km upstream of the Kuparuk River crossing at the Dalton Highway. From June 1, 1990 until June 23, 1990 measurements were taken daily. Beginning on June 24, 1990, measurements were taken every four hours. Measurements were taken at the water line and recorded using a measuring stick placed vertically on the upstream side between the two culverts. The readings were in centimeters up from the bottom of the river.
Discharge was calculated from stage height. The calibration of the discharge regression equation was rechecked during the summer at three different stage heights, 88, 89.5 and 112cm. Actual flow measurements were taken at the 10cm depth increments every 1 meter along a cross sectional transect of the river, just downstream of the gas pipeline crossing. Calibration measurements were taken using a Marsh-McBirney, Model 201 portable water current meter.
The previous year, the stilling well and staff height measuring stick were washed out and lost due to an excessive spring break-up. While a replacement measuring stick was positioned in the same location as the original, the zero point for the original stick was not recorded and it is unknown how the sticks correspond to one another with respect to their zero points. It is estimated that they were within 6cm of each other. The 1989 break-up also caused the section of the north culvert that was previously bent to bend further.
The three calibration values correspond fairly well to 1988’s regression curve when there is no change in slope of the curve at stage <105cm. Discharge measurements at all stage heights were calculated using the 1988 curve at a single slope (0.016). The rating curve equation used was y = ((x-70)^1.44 * 0.016) + 0.1), with x being the stage height. Raw data from the calibration measurement are available.
Water temperature readings were taken hourly by a Campbell data logger positioned at the Kuparuk River Headwater Fork (68 33' 12"N;149 19' 30"W).
Arctic LTER Streams Protocol, updated 2010 by EBS
annual data updated to new file
For Archival Use:
DATA FILE ENTERED BY:
DATA FILE VALIDATION:
NAME: Julie Pallant
DATE: Dec 91
7/30/13: EJE organized metadata and data into this file. TEMPERATURE data added to DISCHARGE. Data uploaded and verified Jan.2014 (JD)
Version 4: Updated keywords (23Jan14-JD)
Version 5: Changed Distrubution URL since the LTER network DAS system is being discontinued. JimL 9Apr2015
Download a comma delimited (csv) or Excel file (includes metadata and data sheets).
Use of the data requires acceptance of the data use policy --> Arctic LTER Data Use Policy
To cite this data set see the citation example on the LTER Network Data Portal page for this data set.