Visual OTTHYMO

3.5.5 ROUTEWETLAND

RouteWetland command is used to route flows through a wetland. This command is only available for continuous modeling, which calculates the hydrologic cycle of a wetland. The wetland command includes a dry area (similar to a wetland) and a wet area (similar to a route reservoir).

Parameter Name Description Default Value
Storage Area Geometry
Initial water Depth (m) Depth of water in the wetland at the start of a model run 0.0m
Bottom Elevation (m) Elevation at the lowest point in the wetland 10.0m
Depth Area Curve Depth area curve for the entire wetland (Dry and wet areas), Starts at the bottom elevation of the wetland 0.000 100
0.500 100
1.000 100
1.500 100
Storage Area – Soil
Soil Thickness (m) Thickness of the soil layer constraining movement between surface and ground water 1.25m
Hydraulic Conductivity (mm/day) Saturated hydraulic conductivity for soils in areas with ponded water, represent the ease at which moisture can move through a soil in which all easily drained pore spec is filled with liquid 10.0 mm/day
Groundwater ID 1
Fringe Area
Soil Texture Description of soil base on relative content of sand, silt, clay particles Clay Loam
Total Porosity Fraction of soil that is made up of spaces (pores) be-tween particles 0.464
Field Capacity Soil moisture held in soil after excess water has drained away 0.310
Wilting Point Moisture left in dry soil that is not accessible to plants, causing them to wilt 0.187
Saturated K (mm/day) Hydraulic conductivity of the soil in dry areas when saturated, represent the ease at which moisture can move through a soil in which all easily drained pore spec is filled with liquid 24.38 mm/day
CN Curve number used for SCS 68
IA (mm) Pervious Area Depression Storage 10 mm
Evapotranspiration
Land Cover General description of vegetation Crops to shoulder height
k K = GI /Pan Evaporation – Growth index of a crop / Pan Evaporation 1.4
VEGK3 ET opportunity coefficient, used to calculate ET from soil 6.0
Outlet
Type Choice of method for defining outlet (Currently only Stage Discharge is available) Stage Dis-charge
Discharge Curve Depth discharge curve for the wetland, depth is defined from the bottom elevation of the wetland Refer to Error! Reference source not found.