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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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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