Sespe Creek
The creek starts at Potrero Seco in the eastern Sierra Madre Mountains , and is formed by more than thirty tributary streams of the Sierra Madre and Topatopa Mountains , before it empties into the Santa Clara River in Fillmore . 
<triplet> Topatopa Mountains <subj> Sierra Madre Mountains <obj> has boundary <triplet> Fillmore <subj> Topatopa Mountains <obj> shares border with