Chapter 5 - Publications, US Army Corps of Engineers

EM 1110-2-1701
31 Dec 1985
such as HEC-5 are generally capable of integrating flood control and
non-wwer storage regulation objectives in the power study (40).
Figure 5-12 shows a rule curve for an existing flood controlconservation
storage project, and it illustrates the type of criteria
that sometimes must be observed in making power studies.
(3) The above discussion applies primarily to the sequential
routing method. The duration curve and hybrid methods cannot
explicitly account for non-power operating criteria. The only way in
which they can be reflected is to utilize flow data which already
incorporates these criteria. In hourly sequential routing studies,
additional operating criteria often must be considered, and these are
described in Section 6-9.
n. ~
(1) Channel routing characteristics are required to define (a)
travel times between projects and/or control points, and (b) the
moderating effect of channel storage on changes in discharge. These
effects can usually be ignored in monthly and weekly studies, but they
are im~rtant in daily and hourly studies, especially where multiple
projects are being studied or where downstream non-power objectives
(such as flood control or water SUPPIY) must be met concurrently with
&wer operations. SSR models with daily or hourly capabilities
800
MAXIMUM POOL
FLOOD CONTROL STORAGE ZONE