USGS Data Series 330
National Water-Quality Assessment Program
By Thomas F. Cuffney and Robin A. Brightbill
U.S. Geological Survey Data Series 330, 23 pages (Published online only, April 2008)
This report is available in PDF format: DS 330 () (830 KB)
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Temperature data and summary statistics are presented for 256 sites in 9 metropolitan areas as part of the U.S. Geological Survey National Water-Quality Assessment Program studies of the effects of urbanization on stream ecosystems. The computer program (GRAN) that was developed to derive uniform data granularity and calculate temperature statistics (means, standard deviations, rates of change, degree days) is described, as are the methods used to estimate missing daily mean temperatures, degree days (annual and summer periods), and 7-day running averages of daily mean temperatures.
Purpose and Scope
Processing Water Temperature Data
Acquiring Water Temperature Data
Selecting Annual and Summer Periods
Selecting a Common Data Granularity
Summarizing Water Temperature Data
Summary Statistics for Annual and Summer Periods of Record
Estimating Annual Degree Days
Extracting 7-Day Running Average Daily Mean Temperatures
Appendix 1. Granularity Program (GRAN)
Sources of Data Used by GRAN
Help and Documentation
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Suggested citation: Cuffney, T.F., and Brightbill, R.A., 2008, Methods for processing and summarizing time-series temperature data collected as part of the National Water-Quality Assessment Program studies on the effects of urbanization on stream ecosystems: U.S. Geological Survey Data Series 330, 23 p. (available only online at http://pubs.water.usgs.gov/ds330)
For more information, please contact Thomas F. Cuffney.