7320

• UCREFRP Catalog Number: 7320
• Author: U.S. Fish and Wildlife Service.
• Title: HYDROSS Background at the Fish and Wildlife Service ‎(FWS)‎.
• USFW Year: n.d.
• Copyright Material: NO

T
HYDROSS V3.0
Introduction
1.2.2 Tables
---------------
The table file is the mechanism for intr ~perationa L
param e s o t e mo el. a two types of tables are monthly (type 0)
an _parameter ion (type 1). The structure and format of the
to a ale is detailed in Appendix 6.3.
Mon_ thly
but may vary
re
Tables may b~
la different
requirements
tables.
tables contain data which ar
from mont to month and year
s e
fixed (one table record for
table record for each year).
and reservoir evaporation ra
P constant for a g;~n mD~tb,
to year. Each table record
n~fries lone for each monthl.
the entire study) or staged
For example, crop irrigation
tes are defined in staged
For staged tables, HYDROSS uses the latest table at or before the
year under consideration, and you do not need to have a table for each
year of the study. That is, given only a table for 1953 and for 1960,
HYDROSS will use the 1953 table for the years 1953 through 1959, and
then pick up the 1960 table.
Parameter/function tables occur in a' and define a relation
between a unc ion value an a variable parame a ~[a or-
e p e, reservoir a ev tion as a f n eservoir content
is given ion table. ,These tables do not require
we ve entri~s_, h- t the relationship thp~~ --vafifid_for
the entire HYDRO~rforms linear interpolation to derive
a on value for a given parameter value.
Parameter/function tables may also be staged.
1.2.3 Network
----------------
The ork file furnishes HYDROSS with a physical description of
the study area how t e stations t h sick= yes
(r ors; power p ants, canal capacities, a c. and supply
emen oca ~ ivers~ons, i m f1o~i reousr~ments,
return ow points, onnection to the operational parameters
is through the use of table numbers, which are then used as pointers
to the data in the table file.
The components of the network data are discussed in section 4,
and the file structure is detailed in Appendix 6.5.
Preparation of a network file to accurately model a river basin
requires a very thorough understanding of the network components
and how the model utilizes them. While a straight recitation of the
system capabilities makes pretty dry reading, it is important to keep
in mind that each of the system capabilities is a tool 'or part of a
tool) to model the system.
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