Environmental flow allocation and statistics calculator

Open-File Report 2011-1166
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Abstract

The Environmental Flow Allocation and Statistics Calculator (EFASC) is a computer program that calculates hydrologic statistics based on a time series of daily streamflow values. EFASC will calculate statistics for daily streamflow in an input file or will generate synthetic daily flow series from an input file based on rules for allocating and protecting streamflow and then calculate statistics for the synthetic time series. The program reads dates and daily streamflow values from input files. The program writes statistics out to a series of worksheets and text files. Multiple sites can be processed in series as one run. EFASC is written in MicrosoftRegistered Visual BasicCopyright for Applications and implemented as a macro in MicrosoftOffice Excel 2007Registered. EFASC is intended as a research tool for users familiar with computer programming. The code for EFASC is provided so that it can be modified for specific applications. All users should review how output statistics are calculated and recognize that the algorithms may not comply with conventions used to calculate streamflow statistics published by the U.S. Geological Survey.

Additional publication details

Publication type Report
Publication Subtype USGS Numbered Series
Title Environmental flow allocation and statistics calculator
Series title Open-File Report
Series number 2011-1166
DOI 10.3133/ofr20111166
Year Published 2011
Language English
Publisher U.S. Geological Survey
Publisher location Reston, VA
Contributing office(s) Washington Water Science Center
Description iii, 20 p.; Appendix; XLSM Download of Environmental Flow Allocation and Statistics Calculator; XLSM Download of Verification File; TXT Download of Verification File
First page i
Last page 46
Online Only (Y/N) N
Additional Online Files (Y/N) Y