PPL Montana, LLC v. State, 229 P.3d 421 (2010), cert. granted, 131 S. Ct. 3019 (2011)

(plaintiff, wholesale generator of electricity, challenged award of summary judgment to defendant; trial court determined that defendant owned three riverbeds and was, thus, entitled to damages for plaintiff's use of riverbeds from 2000-2007 at hydroelectric power sites; on appeal, court affirmed on basis that rivers at issue were navigable when defendant became state in 1889 under navigability for title test).