7417

• UCREFRP Catalog Number: 7417
• Author: U.S. Fish and Wildlife Service.
• Title: Flaming Gorge Operations Study December 15, 1988-Preliminary Draft.
• USFW Year: 1988.
• USFW - Doc Type: Denver, Colorado.
• Copyright Material: NO

RESERVOIR LEVELS
HYDROSS uses five levels in the reservoirs. The uses of each
level are described in this section. The levels are:
Absolute maximum - Defined as the last (highest) entry in the
reservoir content table. Conceptually, this is the top of
the dam. Contents above this level will be discharged or
spilled without regard to downstream channel capacity (or
flood damage).
Maximum - Defined by a table (possibly staged). The model
will not willingly retain water in the reservoir above this
- - level, and will try to discharge or spill the excess
(constrained by downstream channel capacity). If the table
is omitted, the model defaults to the absolute maximum.
Target - Defined by a table (possibly staged). This level
has only two uses, and is otherwise ignored. One use is in
off-stream storage (to determine the diversion demand as the
difference between target content and actual content), the
other use is in pool maintenance (see next section). If you
omit the table definition, the model defaults to the maximum.
Minimum - Defined by a table (possibly staged). At or below
this level, the model will not discharge water from the
reservoir. The only losses will be from seepage and/or
evaporation. If you omit the table definition, the model
defaults to the absolute minimum.
Absolute minimum - Defined as the first (lowest) entry in the
reservoir content table. Used only as a default, in case you
omitted the table definition for Minimum above.
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