From Flagstaff, AZ: Take I-40 east towards Albuquerque to exit 207, turn north and go on a small road passing Cosnino until you get to a T, turn right east on Camp Townsend Winona Road, turn left unto Leupp Rd towards Darling, this road will turn into road 15, keep your eye open for a dirt road to the left marked road 70 (it is about 13 or 14 miles from the turn to Leupp Rd, just after you enter the Navajo Nation Reservation.
Grand Falls or Chocolate Falls locate in Arizona. At 185 feet tall , it is taller than Niagara Falls. It dumps snow melt or monsoon rain into the Little Colorado River below. It is famous for its extremely muddy flow which is a major contributor to Little Colorado River opacity. It is dry for the most of the year and only in March-April when the snow melts, you can see the flow of this "Chocolate" water.