Roosevelt Lake, the largest lake entirely within Arizona, sits about ninety-five miles northeast of downtown Phoenix, and the drive between the Valley and the marina runs roughly two and a half hours door to shoreline in normal traffic. The connection is Loop 202 east to State Route 87, the Beeline Highway, north past Fountain Hills and through the Mazatzal foothills, then State Route 188 east past Punkin Center and Tonto Basin to the lake. It is the Valley's big-water escape, carrying boaters towing rigs, anglers chasing bass and crappie, RVers staging for lakeside campgrounds, and...