PPT Slide

catchment-scale water balance

GW

Discharge: Q

ET

P

dS = inputs - outputs

Q = (P - ET) ± GW

Q = (pAREA - et AREA) ± gw AREA

let a = (p + et ± gw) and b=1

then,

Q = a AREA b

where p, et, gw are basin-wide average rates

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