The only place "close" to Lexington I know of that has trout waters is the Dix River (below Herrington Lake). But, you better know what you're doing and the situation of the river before attempting any such venture. Access is by way of the KY River at High Bridge & then up river to the Dix River (where it enters the KY River). At least that's the only "public access" way to get on the Dix River, that I know about.