Distribution of Open-File Report 94-360, User's Guide to SAC--A Computer Program for Computing Discharges by Slope-Area Method, by Janice M. Fulford



In Reply Refer To:                                      January 31, 1996
Mail Stop 415



OFFICE OF SURFACE WATER TECHNICAL MEMORANDUM NO. 96.03

Subject: Distribution of Open-File Report 94-360, User's Guide to SAC--
         A Computer Program for Computing Discharges by Slope-Area
         Method, by Janice M. Fulford

A new slope-area program, SAC, is documented by the recent publication: 
Open-File Report 94-360, User's Guide to SAC--A Computer Program for 
Computing Discharges by Slope-Area Method.

The SAC program uses the slope-area computation methodology described 
in Techniques of Water Resources Investigations Book 3, Chapter A2, 
Measurement of Peak Discharge by the Slope-Area Method, to compute dis
charges in a reach from high-water marks and surveyed cross-section 
data. It automatically computes a mean water-surface elevation for sec
tions with non-level water surfaces, either by conveyance weighting or 
by averaging water-surface elevations at the banks.

The new program uses input files with the same format as WSPRO input 
files. This should help users to consolidate channel geometry data into 
a common format. The program is available in personal computer (PC) MS-
DOS, or Data General (DG) UNIX version.

Paper copies of the report are available from:

 Chief, Deterministic Modeling Project
 U.S. Geological Survey, OSW
 Building 2101
 Stennis Space Center, MS 39529

The program and report are also available as a compressed tar file via 
ftp by logging in as anonymous at qmsbs2. The SAC program is at /pub/
slopearea as sacpc.tar.Z (pc version) and as sacunix.tar.Z (DG Ver
sion). Binary should be set before getting the files. Questions on the 
program may be addressed to Janice M. Fulford, 601-688-1501.



                                Thomas H. Yorke
                                Chief, Office of Surface Water

Attachment

WRD Distribution: A, B, FO, PO