WSPC03077

• File Number: 8062
• Description: Federal Water Rights - Colorado Litigation - National Forest ISF Claims - Division 2
• State: CO
• Basin: Statewide
• Date: 1/1/1996
• Author: CWCB
• Title: Materials of Interest - Development of Instream Flow Recommendations in Colorado Using R2CROSS - CWCB
• Water Supply Pro - Doc Type: Report/Study

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R2CROSS Program Documentation

Program documentation for the
R2CROSS macro is divided into four sections.
The "Setup and Installation" section describes
the hardware and software requirements of the
R2CROSS macro and installation of the
R2CROSS program on a hard disk drive. The
"Iron Creek Example" provides an opportunity
for the new user to learn the most common
procedures for entering and analyzing typical
R2CROSS data sets and to verify that a newly
installed version of R2CROSS is operating
properly, "The R2CROSS Menu" provides
detailed program documentation for each of the
menu choices within R2CROSS (Figure D).
Instructions for "Terminating and reactivating
the R2CROSS macro" are described in the fmal
section,
Appendix A provides a brief description
of the "Program Calculations" that are
performed within the R2CROSS macro, Rather
than emphasizing the technical aspects of these
calculations, this appendix is intended to
provide a fundamental understanding of the
operations being performed within the macro,
Output from the R2CROSS macro was
verified against several simple hand-calculated
examples, More complex cross sections were
verified by comparison with output from the
MANSQ option ofIFIM (Bovee 1982), Based
on this verification process, it is our belief that
the instream hydraulic parameters summarized
in the R2CROSS staging table are accurate
estimations based upon Manning's equation.
To date, the majority of the CWCB's
instream flow water rights have been based

upon recommendations from an R2CROSS
analysis. The CWCB chose the R2CROSS
methodology because it is both time and labor
efficient. It has also been shown to produce
similar results to more costly techniques for
modeling streamflows (Nehring 1979),
The CWCB hopes that the release of the
R2CROSS macro will foster a greater
understanding of this technical aspect of
Colorado's Instream Flow Program. It is
intended to be user-friendly, If you have any
problems running the macro or questions
regarding its operation, please feel free to
contact the CWCB staff.

Setup and Installation
The R2CROSS macro runs efficiently
on an ffiM-compatible 80486 personal
computer equipped with a hard disk drive, and
DOS 6,0, Windows 3.1, and Lotus 1-2-3
Release 4 for Windows software.

Copying R2CROSS to a Hard Disk Drive
To begin installation of the R2CROSS
program, create an R2CROSS subdirectory on
your computer's hard drive using the DOS
command:

md c:\R2CROSS
and press <ENTER>.
Copy the files from the enclosed
diskette into this subdirectory using the DOS
command:
copy a:*.* c:\R2CROSS.
Press <ENTER> to execute the command,

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