Icon  | Description  | Icon  | Description  | 
|---|---|---|---|
![]()  | Storage Reservoir Reservoir with Release and spillways; no hydropower. Pool Elevation is a function of Storage.  | ![]()  | Level Power Reservoir Reservoir with hydropower (turbine release) and spillways; Pool Elevation is a function of Storage.  | 
![]()  | Slope Power Reservoir Reservoir with hydropower and spillways. Storage is level storage plus wedge storage.  | ![]()  | Pumped Storage Reservoir Reservoir with reversible pump-turbines that may generate or pump at each timestep.  | 
![]()  | Reach Models routing in a river section; acts as node for diversions and return flows; models gains, losses.  | ![]()  | Groundwater Models head based flow and storage of water in ground, groundwater-surface water interaction.  | 
![]()  | Aggregate Reach Aggregation of multiple Reach objects.  | Aquifer A deep, fully saturated, often confined groundwater system.   | |
![]()  | Confluence A flow junction with two Inflows and a single Outflow.  | ![]()  | Stream Gage Represents a gauge location in a river system; no simulated process.  | 
![]()  | Bifurcation A flow junction with two Outflows and a single Inflow.  | ![]()  | Pipeline Models pipe flow (pressurized).  | 
![]()  | Water User Diverts water from a Reach or Reservoir, models consumptive use and return flows.  | ![]()  | Pipe Junction Models a junction in pressurized flow system.  | 
![]()  | Aggregate Diversion Site Contains Water Users; diverts from Reach or Reservoir; models consumptive user and return flow.  | ![]()  | Inline Pump Models a booster pump station; calculates added head and power consumed.  | 
![]()  | Diversion Diverts water from a Reservoir or Reach.  | ![]()  | Inline Power plant Models power generation in reach with no storage, also called run-of-river power plant.  | 
![]()  | Canal Models bi-directional conveyance channel by gravity flow between two reservoirs.  | ![]()  | Power Plant Diversion Models the diversion and consumption of water by a Power Plant, often for cooling.  | 
![]()  | Aggregate Distribution Canal Routes flows through multiple canal reaches from Diversion to Water users, and routes demands  | ![]()  | Thermal Models economics of thermal power system and thermal replacement value of hydropower.  | 
![]()  | Control Point Point of regulation; for example, for channel capacity for floods or instream flow regulation.  | ![]()  | Data Object Container for user-configured data and custom slots; for example, expressions for user-defined calculations.  |