In MODFLOW models, Model Features are used to define some or all of the spatial data in the following packages as well as IFACE and the starting particle distribution in MODPATH.
•CHD: Time-Variant Specified-Head package
•CFP: Conduit Flow package
•CHOB: Specified-Head Flow Observation package
•DRN: Drain package
•DROB: Drain Observation package
•DRT: Drain Return package
•ETS: Evapotranspiration Segments package
•EVT: Evapotranspiration package
•FHB: Flow and Head Boundary package
•FMP: Farm process
•GHB: General-Head Boundary package
•GBOB: General-Head-Boundary Observation package
•HFB: Horizontal Flow Barrier package
•HOB: Head Observation package
•LAK: Lake package
•MAW: Multi-Aquifer Well package
•MNW1: Multi-Node Well package (version 1)
•MNW2; Multi-Node Well package (version 2)
•MVR: Water Mover package
•RCH: Recharge package
•RES: Reservoir package
•RIV: River package
•RVOB: River Observation package
•SFR: Stream-Flow Routing package
•STR: Stream package
•UZF: Unsaturated-Zone Flow package
•WEL: Well package
The user specifies a start and end time for the boundary condition. The user does not need to define boundary conditions by stress period because ModelMuse can determine the appropriate stress periods based on the times specified by the user.