Clarion River
The Clarion River is a tributary of the Allegheny River , approximately 110 mi ( 177 km ) long , in west central Pennsylvania in the United States . 
<triplet> Clarion River <subj> Allegheny River <obj> mouth of the watercourse <subj> 177 <obj> length <subj> Pennsylvania <obj> located in the administrative territorial entity <triplet> Allegheny River <subj> Clarion River <obj> tributary <subj> Pennsylvania <obj> located in the administrative territorial entity <triplet> Pennsylvania <subj> United States <obj> country <triplet> United States <subj> Pennsylvania <obj> contains administrative territorial entity