Data Series 248
Report PDF (18.1 MB) |
AbstractAnalysts and managers of surface-water resources might have interest in selected
statistics of daily mean streamflow for U.S. Geological Survey (USGS)
streamflow-gaging stations in Texas. The selected statistics are the
annual mean, maximum, minimum, and L-scale of daily meanstreamflow.
Annual L-scale of streamflow is a robust measure of the variability
of the daily mean streamflow for a given year. The USGS, in cooperation
with the Texas Commission on Environmental Quality, initiated in 2006a
data and reporting process to generate annual statistics for 712 USGS
streamflow-gaging stations in Texas. A graphical depiction of the history
of the annual statistics for most active and inactive, continuous-record
gaging stations in Texas provides valuable information by conveying
the historical perspective of streamflow for the watershed. Each figure
consists off our time-series plots of the annual statistics of daily
mean streamflow for each streamflow-gaging station. Each of the four
plots is augmented with horizontal lines that depict the mean and median annual values of the corresponding statistic
for the period of record. Monotonic trends for each of the four annual
statistics also are identified using Kendall’s τ. The history of one
or more streamflow-gaging stations could be used in a watershed, river
basin, or other regional context by analysts and managers of surface-water
resources to guide scientific, regulatory, or other inquiries of streamflow
conditions in Texas. |
Asquith, W.H., Vrabel, Joseph, and Roussel, M.C., 2007, Summary of annual mean, maximum, minimum, and L-scale statistics of daily mean streamflow for 712 U.S. Geological Survey streamflow-gaging stations in Texas through 2003: U.S. Geological Survey Data Series 248, 721 p.
Abstract
Introduction
Summary of Annual Mean, Maximum, Minimum, and L-scale Statistics of Daily Mean Streamflow in Texas
General Discussion
References
Index of Station Numbers
| For additional information contact: Director, Texas Water Science Center U.S. Geological Survey 8027 Exchange Drive Austin, Texas 78754-4733 World Wide Web: http://tx.usgs.gov/ |
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