FLOOD02741

• County: Statewide
• Basin: Statewide
• Title: HEC-5 Simulation of Flood Control and Conservation Systems
• Date: 6/1/1979
• Prepared For: US
• Prepared By: COE
• Floodplain - Doc Type: Educational/Technical/Reference Information

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(6) Upstream tandem reservoirs may not be operated directly for
control points below a downstream tandem reservoir; however, the downstream
tandem reservoir considers the upstream system storage when making its
release.

(7) Reservoirs in the system that operate for a common control
point are kept in balance as much as possible.

(8) Reservoir and control point identification number may be
any integer number up to six digits. The computer uses a series of inter-
nally generated numbers for storage of variable arrays.

(9) Dimension limits for the library version can be easily modified
by changing these variables and the common statements:

KNCPT : 15 - Number of control points
KRES : 1D - Number of reservoirs
KCHSTG : 18 - Number of values of channel storage and discharge
KnIV : 11 - Number of diversions
KLEV = 8 - Number of reservoir target levels
KNCAPT : 18 - Number of values of reservoir storage, discharge,
etc.
KFLCON = 9 - Number of ratios of a flood
KPWR = 5 Number of power plants
KPHRS = 2 - Number of power systems

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b. Reservoir Description

(1) Each reservoir must have a starting storage and storage values
for each target level. Target levels can va~v monthly or remain constant.

(2) ~ Each reservoir operates for itself and as many downstream
points as desired.

(3) Each reservoir must have a table of outlet capacities as a
function of reservoir storages.

(4) Each reservoir is also considered a control point and requires
control point data.

(5) Additional data on reservoir areas, elevations, and costs
can be given as a function of reservoir storages.

c. Control Point Description

(1) Each control point must have an operating channel capacity.
The channel caoacity can be constant or increase with channel flows.

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