Headwaters rhymes with:
floodwaters, goldwater's, backwaters, fitzwater's, floodwaters, goldwater's, pinkwater's, whitewater's, backwaters, fitzwater's, floodwaters, goldwater's, granddaughter's, granddaughters, pinkwater's, stepdaughters, whitewater's
Headwaters sounds like:
haters, hatrick, hatteras, headdress, headdresses, headers, headrick, heaters, heather's, heathers, heathrow's, hedrich, hedrick, heidrich, heidrick, heterosis, heterozygous, hetrick, hettrick, hitters, hooters, hydras, hydrick, hydro's, hydrous, hydrox, hydroxy