When a landowner hurled rocks at Roger Hill for wading and fishing in the Arkansas River, the octogenarian angler sued, arguing the river was navigable when Colorado became a state in 1876 and therefore public property and open for wading and fishing. The lawsuit threatened to upend decades of tenuous agreements around public access on the state’s rivers and streams. The Colorado Supreme Court this week told Hill to stow his waders. The state’s highest court on Monday ruled Hill had no legal standing to argue the state’s rivers were public property if they were navigated for commerce in 1876.