 The elevation near the mouth of Toby Creek is 518 feet (158 m) above sea level. The elevation of the creek's source is between 1,220 and 1,240 feet (370 and 380 m) above sea level. Its gradient is relatively low. In its upper 8 miles (13 km), the creek's elevation decreases at a rate of 92.5 feet (28.2 m) per mile. In its lower 3 miles (4.8 km), its elevation decreases at a rate of 24 feet (7.3 m) per mile.
