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Name of the reservoir hydrology record
The name of the reservoir hydrology record is a primary key referenced by the foreign key hyd in reservoir.res. All names in the hydrology.res file must be unique.
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The month of the simulation that the reservoir becomes operational
If 0 is input for yr_op and mon_op, the model assumes the reservoir is in operation at the beginning of the simulation.
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Volume of water needed to fill the reservoir to principal spillway
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Volume of water needed to fill the reservoir to emergency spillway
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Lake evaporation coefficient
Shape coefficient 1 for reservoirs
If shp_co1 is set to 0, the model will estimate this value.
The year of the simulation that the reservoir becomes operational
The year specified here must be within the simulation period. If 0 is input for yr_op and mon_op, the model assumes the reservoir is in operation at the beginning of the simulation.
Shape coefficient 2 for reservoirs
If shp_co2 is set to 0, the model will estimate this value.
This file contains the reservoir hydrology parameters.
| Field | Description | Type | Unit | Default | Range |
|---|---|---|---|---|---|
Name of the reservoir hydrology record
string
n/a
n/a
n/a
The year of the simulation that the reservoir becomes operational
integer
n/a
1
1-9999
The month of the simulation that the reservoir becomes operational
integer
n/a
1
1-12
Reservoir surface area when reservoir is filled to principal spillway
real
ha
1500.0
1-3000.0
Volume of water needed to fill the reservoir to principal spillway
real
ha-m
1500.0
15.0-3000.0
Reservoir surface area when reservoir is filled to emergency spillway
real
ha
500.0
1.0-1000.0
Volume of water needed to fill the reservoir to emergency spillway
real
ha-m
55.0
10.0-100.0
Hydraulic conductivity of the reservoir bottom
real
mm/hr
0.0
0.0-1.0
Reservoir evaporation coefficient
real
n/a
0.60
0.0-1.0
Shape coefficient 1 for reservoirs
real
n/a
0.0
Shape coefficient 2 for reservoirs
real
n/a
0.0
Reservoir surface area when reservoir is filled to emergency spillway
For SWAT+ to calculate the reservoir surface area each day, the surface area at two different water volumes must be defined. Variables referring to the principal spillway can be thought of as variables referring to the normal reservoir storage volume, while variables referring to the emergency spillway can be thought of as variables referring to the maximum reservoir storage volume.
Reservoir surface area when reservoir is filled to principal spillway
For SWAT+ to calculate the reservoir surface area each day, the surface area at two different water volumes must be defined. Variables referring to the principal spillway can be thought of as variables referring to the normal reservoir storage volume, while variables referring to the emergency spillway can be thought of as variables referring to the maximum reservoir storage volume.
Hydraulic conductivity of the reservoir bottom
If seepage occurs in the reservoir, the hydraulic conductivity must be set to a value other than 0.