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In cooperation with the City of Houston

Summary Statistics and Graphical Comparisons of Specific Conductance, Temperature, and Dissolved Oxygen Data, Buffalo Bayou, Houston, Texas, April 1986–March 1991

By D.W. Brown and E.M. Paul

U.S. Geological Survey
Open-File Report 95–706


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pdf (1.73 MB)


Contents

Abstract

Introduction

Summary Statistics

Graphical Comparisons

Reference

Figures

1.  
Map showing location of gaging stations, Buffalo Bayou, Houston, Texas
2.  
Hydrographs showing daily mean specific conductance, Buffalo Bayou, Houston, Texas
3–6.  
Boxplots showing daily mean specific conductance aggregated by:
3.  
Station and season, Buffalo Bayou, Houston, Texas
4.  
Month, Buffalo Bayou at Houston, Texas (08074000), October 1987–March 1991
5.  
Month, Buffalo Bayou at Main Street, Houston, Texas (08074600), October 1986–March 1991
6.  
Month, Buffalo Bayou at Turning Basin, Houston, Texas (08074710), April 1986–March 1991
7.  
Hydrographs showing daily mean water temperature, Buffalo Bayou, Houston, Texas
8–11.  
Boxplots showing daily mean water temperature aggregated by:
8.  
Station and season, Buffalo Bayou, Houston, Texas
9.  
Month, Buffalo Bayou at Houston, Texas (08074000), October 1987–March 1991
10.  
Month, Buffalo Bayou at Main Street, Houston, Texas (08074600), October 1986–March 1991
11.  
Month, Buffalo Bayou at Turning Basin, Houston, Texas (08074710), April 1986–March 1991
12.  
Hydrographs showing daily mean dissolved oxygen, Buffalo Bayou, Houston, Texas
13–16.  
Boxplots showing daily mean dissolved oxygen aggregated by:
13.  
Station and season, Buffalo Bayou, Houston, Texas
14.  
Month, Buffalo Bayou at Houston, Texas (08074000), October 1987–March 1991
15.  
Month, Buffalo Bayou at Main Street, Houston, Texas (08074600), October 1986–March 1991
 
16.  
Month, Buffalo Bayou at Turning Basin, Houston, Texas (08074710), April 1986–March 1991

Tables

1–3.
Summary statistics by month for specific conductance, temperature, and dissolved oxygen, Buffalo Bayou at:
1.
Houston, Texas (08074000), October 1987–March 1991
2.
Main Street, Houston, Texas (08074600), October 1986–March 1991
3.
Turning Basin, Houston, Texas (08074710), April 1986–March 1991

Abbreviated Water-Property Units

°C, degrees Celsius
µS/cm, microsiemens per centimeter at 25 degrees Celsius
mg/L, milligrams per liter


Abstract

Buffalo Bayou is the major stream that drains the Houston, Texas, metropolitan area. The U.S. Geological Survey has provided specific conductance, temperature, and dissolved oxygen data to the City of Houston for three sites along a 7.7-mile reach of Buffalo Bayou since 1986. Summary statistics and graphical comparisons of the data show substantial variability in the properties during 1986–91. Specific conductance ranged from about 100 microsiemens per centimeter at 25 degrees Celsius at each of the three sites to 17,100 microsiemens per centimeter at 25 degrees Celsius at the most downstream site, at the headwaters of the Houston Ship Channel. Water temperatures ranged from 5 to 33 degrees Celsius. Temperatures were very similar at the two upstream sites and slightly warmer at the most downstream site. Dissolved oxygen ranged from zero at the most downstream site to 11.7 milligrams per liter at the most upstream site.

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