OFR-2008-1362 Streamflow Statistics Programs

Executive Summary:
Summary of Computer Programs ofr2008-1362-Body.pdf (0.6 MB)

Streamflow Data Compilation and Interpretation Programs:
Note: You need to save the compressed (.zip) files and the disk-image (.iso) file to your local computer to use these files. To save the files, right-click on the link and select the "Save Target As" option.

Appendix 1. Get National Water Information System Streamflow (Q) files GNWISQ (Version 1.0)—A program for downloading streamflow-gaging-station information and daily mean streamflow files from the U.S. Geological Survey National Water Information System Web Site

Summary: This program is used to obtain streamflow data from NWIS Web and reformat the data for use with the other programs.
Manual: ofr2008-1362-A1-GNWISQ.pdf (0.5 MB)
Installation Package: GNWISQInstall.zip (1.55 MB)
Visual Basic 6.0 Source Code: GNWISQCode.zip (23 KB)
Example Input and Output Files: GNWISQExample.zip (1 MB)

Appendix 2. Make Plotting Position (MkPP Version 1.0)—A program for generating plotting positions, percentiles, and frequency factors from daily mean streamflow data

Summary: This program is used to calculate plotting positions, percentiles, and frequency factors from streamflow data for graphing probability plots and flow-duration curves.
Manual: ofr2008-1362-A2-MkPP.pdf (0.6 MB)
Installation Package: MkPPInstall.zip (1.5 MB)
Visual Basic 6.0 Source Code: MkPPCode.zip (15 KB)
Example Input and Output Files: MkPPQExample.zip (0.3 MB)

Appendix 3. Streamflow Record Extension Facilitator (SREF Version 1.0)—A program for extending and augmenting available streamflow data using long-term streamflow records from hydrologically similar sites

Summary: This program is used to augment and extend streamflow records by using the maintenance of variance (MOVE) type I and type III methods or another regression technique such as the Kendall-Theil Robust Line
Manual: ofr2008-1362-A3-SREF.pdf (1 MB)
Installation Package: SREFInstall.zip (2.1 MB)
Visual Basic 6.0 Source Code: SREFCode.zip (69 KB)
Example Input and Output Files: SREFExample.zip (1 MB)

Appendix 4. Streamflow (Q) Statistics (QSTATS—Version 1.0)—A program for calculating population statistics for daily mean streamflow data retrieved from the U.S. Geological Survey National Water Information System Web Site

Summary: This program is used to calculate streamflow statistics including the proportion of zero flows; the average, standard deviation, skew, median, probability-weighted moments and L-moments of of daily mean streamflow values; and the logarithms of these values.
Manual: ofr2008-1362-A4-QSTATS.pdf (0.5 MB)
Installation Package: QSTATSInstall.zip (1.5 MB)
Visual Basic 6.0 Source Code: QSTATSCode.zip (23 KB)
Example Input and Output Files: QSTATSExample.zip (1 MB)

Appendix 5. Make U.S. Environmental Protection Agency DFLOW3 batch-input files MkDF (Version 1.0)—A program for creating batch-input files for DFLOW3

Summary: This program is used to facilitate calculation of biological low flows for multiple stations using the U.S. Environmental Protection Agency DFLOW3 by creating batch-input files
Manual: ofr2008-1362-A5-MkDF.pdf (0.4 MB)
Installation Package: MkDFInstall.zip (1.5 MB)
Visual Basic 6.0 Source Code: MkDFCode.zip (13 KB)
Example Input and Output Files: MkDFExample.zip (0.3 MB)

Entire CD-ROM Image

Compressed Directory Structure: USGS-OFR-2008-1362-CD-ROM.zip (50 MB)

Example Input and Output Files: USGS-OFR-2008-1362-CD-ROM.iso (82 MB)

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