Geography Hydro is located near the northwestern corner of Caddo County at an elevation of . A small part of the town extends north into Blaine County.
GeographY hydro Is LoCaTed near The nORthwEStErn coRneR of caDdO counTy aT an EleVAtiOn Of . A smalL part of The town extEnDs north iNtO Blaine cOuNtY.