Scientific Investigations Report 2012-5110
Return to Index Page
USGS SIR 2012-5110
Information about and links to the Basin Lagtime Files
Information about and links to the Basin Lagtime Regression Equation File
Information about and links to the Hydrograph Recession Files
USGS Software Disclaimer
Copyright and License Information
Basin Lagtime Documentation Files:
The compilation database contains the basin lagtime references, the basin lagtime data, the USGS streamgages used to calculate the triangular-hydrograph recession-ratio statistics, information about the 10,136 USGS streamgages in the instantaneous data warehouse as of 8/12/2011 (most of these will be ported to the NWIS Web database), and selected basin properties from the USGS GAGES database as of 10/30/2010.
CompilationDatabase.zip -- A zip file containing the basin lagtime database (Compilation.mdb in MS Access 2000 format) and the following documentation files.
CompilationDataDict.pdf -- The data dictionary describing the basin lagtime database.
CompilationDataDictDetails.pdf -- The data dictionary describing the basin lagtime database with deiailed field definitions.
CompilationDatabasePlate.pdf -- Data structures of the basin lagtime compilation database--Entity/Relationship (E/R) Diagram.
Basin Lagtime Regression Equation File:
ExamplePredictionIntervals.xls -- Microsoft Excel spreadsheet with spreadsheets for calculating the regression equation results and the associated 90 percent prediction intervals.
Hydrograph Recession Files:
ConvertIDAtoBEST: A program for converting RDB files from the Instantaneous Data Archive format to a tab-delimited text file format. Please note future plans are to move all remaining IDA data to NWISWeb sometime in 2013 at which time IDA will be discontinued.
Microsoft Excel spreadsheet templates for fitting instantaneous steamflow data to triangular hydrographs:
Hydrograph01.xls -- This file can be used to process storms with up to 480 data points (5 days of 15 minute data)
Hydrograph02.xls -- This file can be used to process storms with up to 880 data points (9 days of 15 minute data)
Example spreadsheets for fitting USGS curvilinear hydrographs to triangular hydrographs:
USGS01.xls -- Example 1
USGS02.xls -- Example 2
USGS03.xls -- Example 3
Spreadsheets for fitting triangular-hydrograph recession ratios to a triangular distribution:
The computer files published with this report were prepared by the U.S. Geological Survey (USGS) in cooperation with the Federal Highway Administration (FHWA); both are agencies of the U.S. Government. This information was compiled for quantitative analysis of available data on a national and(or) regional scale. Although the information, metadata, and computer files have been subjected to rigorous review and are substantially complete and accurate, this information is presented without warranty, expressed or implied, as to accuracy or completeness. The USGS and the FHWA reserve the right to revise the software and the data pursuant to further analysis and review. These data and the software on the digital media have been used by the USGS, and are released on condition that the USGS, the FHWA, or the U.S. Government may not be held liable for any damages resulting from their use. The use of trade or product names on this computer disk is for identification purposes only and does not constitute endorsement by the U.S. Government.
The user assumes all risk for any damages whatsoever resulting from loss of use, data, or profits arising in connection with the access, use, quality, or performance of this software.
Copyright and License Information
Copyright protection under Title 17 is not available for any work of the United States Government (U.S. Copyright Office, 2000). Therefore, the information generated by the Government for this report is in the public domain and may not be protected for commercial use. The information and software included with this report are provided solely for the purposes of private study, scholarship, or research.
Software and related material (data and (or) documentation) contained in or furnished in connection with a software distribution are made available by the FHWA in cooperation with the USGS to be used in the public interest and in the advancement of science. You may, without any fee or cost, use, copy, modify, or distribute this software, and any derivative works thereof, and its supporting documentation, subject to the following restrictions and understandings.
If you distribute copies or modifications of the software and related material, make sure the recipients receive a copy of this notice and receive or can get a copy of the original distribution. If the software and (or) related material are modified and distributed, it must be made clear that the recipients do not have the original, and they must be informed of the extent of the modifications. For example, modified files must include a prominent notice stating the modifications made, the author of the modifications, and the date the modifications were made. This restriction is necessary to guard against problems introduced in the software by others, reflecting negatively on the reputation of the FHWA or the USGS.
The software is public property, and you therefore have the right to the source code, if desired. The source code is included on the digital media.
You may charge fees for distribution, warranties, and services provided in connection with the software or derivative works thereof. The names FHWA and USGS can be used in any advertising or publicity to endorse or promote any products or commercial entity using this software if specific written permission is obtained from the FHWA and USGS, respectively.
You agree to appropriately acknowledge the authors, the FHWA, and the USGS in publications that result from the use of this software or in products that include this software in whole or in part.
Some software, file formats, and computer technology associated with this report, however, have been generated by the private sector and as such are protected by copyright, trademark, patent, and (or) other intellectual property laws, and any unauthorized use of these materials may violate such laws. Inclusion with this report does not grant any express or implied rights to you or the government under any patents, copyrights, trademarks, or trade-secret information with respect to the included materials. The private-sector software included with this report, however, may be used solely for the purposes of private study, scholarship, or research under the distribution licenses provided for this commercial software.
Use of the private-sector software is governed by the terms of the end-user license agreement that is included with such software. Downloading, installation, and/or use of included software implies that you agree to the terms of the associated end-user license agreement. If you do not agree to such terms, you will not be able to use the software. You may not decompile, reverse-engineer, or otherwise attempt to discover the source code of the private-sector software available on this computer disk.
Because the software and related material are free (other than nominal material and handling fees) and provided "as is," the authors, the USGS, the FHWA, and the United States Government are not obligated to provide users with any support, consulting, training, or assistance of any kind with regard to the use, operation, and performance of this software nor to provide users with any updates, revisions, new versions, or "bug fixes".
U.S. Copyright Office, 2000, Copyright law of the United States of America and related laws contained in Title 17 of the United States Code: U.S. Copyright Office Circular 92, 237 p.
Federal Highway Administration Contact Information
Federal Highway Administration
Office of Project Development & Environmental Review
1200 New Jersey Ave. SE, E76-207
Washington, DC 20590
The FHWA Web page is at URL: http://www.fhwa.dot.gov/.
U.S. Geological Survey Contact Information
U.S. Geological Survey
Massachusetts-Rhode Island Water Science Center
10 Bearfoot Road
Northborough, MA 01532
Tel: 508-490-5000; Fax 508-490-5068