Report Title: Major and Catastrophic Storms and Floods in Texas  
Opening
Report Guide
Glossary of Terms
Introductory Materials
Substantial flood peaks
Links to related web resouces
Measuring and gaging streamflow
Measuring Precipitation
Recent storm reports
John Patton storm narratives
Texas Flood Safety
Bibliography
Dedication and Credits
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  Recent Reports About Floods and Storm Rainfall in Texas
  Floods
Nearly all flood reports pertain to natural-basin flood investigations. The reports document the largest floods in Texas, summarize annual peak streamflow data, provide flood frequency estimates using updated generalized skew estimates for flood-peak distributions, provide an equation for identifying low outliers, provide statewide regional equations as well as specific equations for flood frequency of small basins, and provide a computer program implementing a new method (the site-specific method) for estimation of flood frequency. The reports describe several other new or modified analysis techniques developed specifically for hydrologic characteristics of Texas.

The latest report documents the effects of regulation by reservoirs on the L-moments of annual peak streamflows, provides a method to determine if the regulation in a given basin will significantly affect peak streamflows, and provides a method to estimate flood frequency for marginally regulated basins. The theory of L-moments, which currently is the state-of-the-art in environment frequency analysis, is the statistical basis of the analysis.

Asquith, W.H., 1998, Peak-flow frequency and extreme flood potential for tributaries of the Colorado River downstream of Austin, Texas: U.S. Geological Survey Water-Resources Investigations Report 98-4015, 19 p.

______2001, Effects of regulation on L-moments of annual peak streamflow in Texas: U.S. Geological Survey Water-Resources Investigations Report 01-4243, 66 p.

Asquith, W.H., and Slade, R.M., Jr., 1995, Documented and potential extreme peak discharges and relation between potential extreme peak discharges and probable maximum flood peak discharges in Texas: U.S. Geological Survey Water-Resources Investigations Report 95-4249, 58 p.

______1995, Flood frequency in Texas—Calculation of peak-streamflow frequency at gaging stations: U.S. Geological Survey Fact Sheet 181-95, 2 p.

______1997, Regional equations for estimation of peak-streamflow frequency for natural basins in Texas: U.S. Geological Survey Water-Resources Investigations Report 96-4307, 68 p.

______1999, Site-specific estimation of peak-streamflow frequency using generalized-least squares regression for natural basins in Texas: U.S. Geological Survey Water-Resources Investigations Report 99-4172, 19 p.

Asquith, W.H., Slade, R.M., Jr., and Judd, L., 1995, Analysis of low-outlier thresholds for log-Pearson Type III peak-streamflow frequency analysis in Texas, in Texas Water '95 component conference of American Society of Civil Engineers First International Conference, San Antonio, Tex., 1995, Proceedings: San Antonio, Tex., American Society of Civil Engineers, p. 379-84.

Asquith, W.H., Slade, R.M., Jr., and Lanning-Rush, Jennifer, 1996, Peak-flow frequency and extreme flood potential for streams in the vicinity of the Highland Lakes, Central Texas: U.S. Geological Survey Water-Resources Investigations Report 96-4072, 1 sheet.

Hejl, H.R., Slade, R.M., Jr., and Jennings, M.E., 1996, Floods in Central Texas, December 1991: U.S. Geological Survey Water-Resources Investigations Report 95-4289, 1 sheet.

Judd, L.J., Asquith, W.H., and Slade, R.M., Jr., 1996, Techniques to estimate generalized skew coefficients of annual peak streamflow for natural basins in Texas: U.S. Geological Survey Water-Resources Investigations Report 96-4117, 28 p.

Liscum, Fred, and East, J.W., 1994, Floods in southeast Texas, October 1994: U.S. Geological Survey Fact Sheet 94-073, 2 p.

Raines, T.H., 1998, Peak-discharge frequency and potential extreme peak discharge for natural streams in the Brazos River Basin, Texas: U.S. Geological Survey Water-Resources Investigations Report 98-4178, 42 p.

Raines, T.H., Asquith, W.H., and Brown, D.S., 1998, Floods in South-Central Texas, June 1997: U.S. Geological Survey Fact Sheet 053-98, 6 p.

Slade, R.M., Jr., Asquith, W.H., and Tasker, G.D., 1995, Multiple-regression equations to estimate peak-flow frequency for streams in Hays County, Texas: U.S. Geological Survey Water-Resources Investigations Report 95-4019, 1 sheet.

Slade, R.M., Jr., and Asquith, W.H., 1996, Peak data for U.S. Geological Survey gaging stations, Texas network; and computer program to estimate peak-streamflow frequency: U.S. Geological Survey Open-File Report 96-148, 57 p.

Slade, R.M., Jr., and Persky, Kristie, 1999, Floods in the Guadalupe and San Antonio River basins in Texas, October 1998: U.S. Geological Survey Fact Sheet 147-99, 4 p.

Storm Rainfall
Reports involving storm rainfall document the largest storms (often with resulting floods) in Texas, provide methods to estimate depth-duration frequency of precipitation, and provide areal reduction factors for the 1-day design storm in the Austin, Dallas, and Houston areas.

Asquith, W.H., 1998, Depth-duration frequency of precipitation for Texas: U.S. Geological Survey Water-Resources Investigations Report 98-4044, 107 p.

______1999, Areal-reduction factors for the precipitation of the 1-day design storm in Texas: U.S. Geological Survey Water-Resources Investigations Report 99-4267, 81 p.

Asquith, W.H., and Famiglietti, J.S., 2000, Precipitation areal-reduction factor estimation using an annual-maxima centered approach: Journal of Hydrology, v. 230, p. 55-69.

Hejl, H.R., Slade, R.M., Jr., and Jennings, M.E., 1996, Floods in Central Texas, December 1991: U.S. Geological Survey Water-Resources Investigations Report 95-4289, 1 sheet.

Lanning-Rush, Jennifer, Asquith, W.H., and Slade, R.M., Jr., 1998, Extreme precipitation depths for Texas, excluding the Trans-Pecos region: U.S. Geological Survey Water-Resources Investigations Report 98-4099, 38 p.

Liscum, Fred, and East, J.W., 1994, Floods in southeast Texas, October 1994: U.S. Geological Survey Fact Sheet 94-073, 2 p.

Raines, T.H., Asquith, W.H., and Brown, D.S., 1998, Floods in South-Central Texas, June 1997: U.S. Geological Survey Fact Sheet 053-98, 6 p.

Slade, R.M., Jr., and Persky, Kristie, 1999, Floods in the Guadalupe and San Antonio River Basins in Texas, October 1998: U.S. Geological Survey Fact Sheet 147-99, 4 p.