NODE VARIABLES
· Water depth (ft. or m above the node invert elevation)
· Hydraulic head (ft. or m, absolute elevation per vertical datum)
· Water volume held in storage (including ponded water, ft3 or m3)
· Lateral inflow (runoff + all other external inflows, in flow units)
· Total inflow (lateral inflow + upstream inflows, in flow units)
· Surface flooding (excess overflow when the node is at full depth, in flow units)
· Concentration of each pollutant after any treatment applied at the node (mass/liter)