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)