AHYMO-S4 is an Arid Lands HYdrology MOdel.
This program was based on the USDA Agricultural Research Service HYMO
program. The current code for the AHYMO program contains approximately 8700
lines of Fortran Source Code with approximately 600 lines of the code
remaining from the original HYMO program. The AHYMO-S4 program has been modified to include the following features:
* Ability to run on computers using Windows 7 (32 and 64 bit), Vista and
XP operating systems.
* Ability to accommodate 99 simultaneous hydrographs
and 4000 data points within a hydrograph. This is useful for evaluation is urban watersheds. This allows analysis of watersheds with thousands of sub-basins.
* Analysis of watershed time of concentration/time to peak using NRCS upland method, NRCS TR-55 method, Snyder's Lag Time method, Kirpich method and the Albuquerque Upland/Lag Time method.
* Computation of hydrographs based on the NRCS (formerly the SCS) and Initial Abstraction/Uniform Infiltration Method.
* Routing through dams, natural and lined channels, and storm sewer pipes.
* Evaluation of sediment transport and sediment yield. The program can accommodate analysis of sediment bulking factors.
The cost of a
single computer license for the AHYMO-S4 Program is $280.00 plus 6.625% tax.
LICENSED USERS OF THE AHYMO_97 PROGRAM
If you or your firm purchased
a single or site license for the AHYMO_97 program, Anderson-Hydro will grant
you an equivalent license to use the AHYMO-S4 program with no additional
cost. This offer does not apply to testing or classroom versions of the
AHYMO_97 program, and is subject to change without further notice. If your
firm now has a single computer license for the AHYMO_97 program and wants to
obtain a site license for the AHYMO-S4 program, Anderson-Hydro will grant
credit for the AHYMO_97 program purchased. If your firm has one single
computer license for AHYMO_97, you can obtain a site license to use AHYMO-S4
for $560.00 plus 6.625% tax.
If your company
obtains three single computer licenses for the AHYMO-S4 Program, including
license transfers from AHYMO_97,
Anderson-Hydro will provide a site license for an unlimited number of
users at a single site. If you purchase a total of four
licenses for the program, Anderson-Hydro will grant a second site
license for an unlimited number of users at a second site.
Anderson-Hydro will grant a site license for the AHYMO-S4
program to government agencies (city, county, regional, state, or Federal)
with no license fee. This license is for use only by employees of the
government agency at the offices of the agency. To obtain a government
agency license, send your agency name, mailing address, phone number, email
address, and contact name to
email@example.com and the licensing information will be sent to you.
Anderson-Hydro will grant a site license for the
AHYMO-S4 program to colleges and universities with no license fee. Licenses
are normally issued to individual departments, and the license request
should come from a university faculty member or staff member. The license is
only for educational use by faculty and students of the university. To
obtain a university license, send your school name, department name, mailing
address, phone number, email address, and contact name/information to
firstname.lastname@example.org and the licensing
information will be sent to you.
TEMPORARY EVALUATION COPY OF AHYMO-S4
You can obtain a temporary
evaluation copy of the AHYMO-S4 program by downloading the following file.
This file is a fully functional version of the program with use limited by
time. The program is contained in a password protected zip file, and you
must obtain the zip password to open the program files. You can right-click
on the name to save the ZIP file to your computer. Please email your
name, organization name, and email to
email@example.com and the zip password will be sent to you.
AHYMO-S4 Program (4.8MB)
You can obtain a copy of the AHYMO-S4 User's Manual by
downloading the following file. This file is a PDF that is formatted for
double sided printing. You can right-click the on the name to save the PDF
file on your computer. The file is authorized for use by licensed users of