Synonyms for Ripple (same or very similar meaning)
WordNet sense 1 (a small wave on the surface of a liquid):
riffle, wavelet, ripplingWordNet sense 2 (flow in an irregular current with a bubbling noise):
babble, bubble, burble, gurgle, guggleWordNet sense 3 (stir up (water) so as to form ripples):
cockle, ruffle, undulateFrom the ODE community, based on WordNetadd/edit