Consumptive use

(1) the quantity of water absorbed by crops and transpired or used directly in the building of plant tissue, together with the waterevaporated from the cropped area;
(2) the quantity of water transpired and evaporated from a cropped area or the normal loss of water from the soil by evaporation and plant transpiration;
(3) the quantity of water discharged to the atmosphere or incorporated in the products of the process in connection with vegetative growth, food processing, or an industrial process.

Source: Handbook of water and wastewater treatment plant operations