  In this paper, we investigate steady two-dimensional free-surface flows of an
inviscid and incompressible fluid emerging from a nozzle, falling under gravity
and impinging onto a horizontal wall. More precisely, for any given atmosphere
pressure $p_{atm}$ and any appropriate incoming total flux $Q$, we establish
the existence of two-dimensional incompressible impinging jet with gravity. The
two free surfaces initiate smoothly at the endpoints of the nozzle and become
to be horizontal in downstream. By transforming the free boundary problem into
a minimum problem, we establish the properties of the flow region and the free
boundaries. Moreover, the asymptotic behavior of the impinging jet in upstream
and downstream is also obtained.
