Data Series 247
Report PDF (32.8 MB)
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AbstractAnalysts and managers of surface-water resources might have interest in the zero-flow
potential for U.S.Geological Survey (USGS) streamflow-gaging stations
in Texas. The USGS, in cooperation with the Texas Commission on Environmental
Quality, initiated a data and reporting process to generate summaries
of percentages of zero daily mean streamflow for 712 USGS streamflow-gaging
stations in Texas. A summary of the percentages of zero daily mean
streamflow for most active and inactive, continuous-record gaging stations
in Texas provides valuable information by conveying the historical
perspective for zero-flow potential for the watershed. The summaries
of percentages of zero daily mean streamflow for each station are graphically
depicted using two thematic perspectives: annual and monthly. The annual
perspective consists of graphs of annual percentages of zero streamflow
by year with the addition of lines depicting the mean and median annual
percentage of zero streamflow. Monotonic trends in the percentages
of zero streamflow also are identified using Kendall’s τ. The monthly perspective
consists of graphs of the percentage of zero streamflow by month with
lines added to indicate the mean and median monthly percentage of zero
streamflow. One or more summaries 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 zero-flow
or other low-flow conditions in Texas. |
Asquith, W.H., Vrabel, Joseph, and Roussel, M.C., 2007, Summary of percentages of zero daily mean streamflow for 712 U.S. Geological Survey streamflow-gaging stations in Texas through 2003: U.S. Geological Survey Data Series 247, 721 p.
Abstract
Introduction
Summary of Percentages of Zero Daily Mean Streamflow for Texas
Annual Perspective of Percentages of Zero Streamflow
Monthly Perspective of Percentages of Zero Streamflow
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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URL: http://pubsdata.usgs.gov/pubs/ds/2007/247/index.html
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Last modified: Monday, 28-Nov-2016 12:26:35 EST
