Shiawassee National Wildlife Refuge
The Bad , Flint , and Cass Rivers flow into the Shiawassee River in the refuge . 
<triplet> Bad <subj> Shiawassee River <obj> mouth of the watercourse <triplet> Flint <subj> Shiawassee River <obj> mouth of the watercourse <triplet> Shiawassee River <subj> Bad <obj> tributary <subj> Flint <obj> tributary