You may use UDEFLECTOR for each water level instead.
Go to Space Warps, select deflectors from the list, then select Udeflecor. On parameters under object base deflector, press select object box then point out the water level.
Then while the deflector is still selected, press bind to spacewarps icon on the main toolbar, drag to link on superspray. Customized bounce amount.
Continue same procedure for each water level.
Good luck!!!