[6] The valley was named after the local Native Americans (Uabs, Yuabs, or Yoabs) of the Piute tribe.

The streams south of the divide are part of the Sevier River Basin and the streams north of the divide flow north out of the valley toward Utah Lake and are part of the basin of the Great Salt Lake.

The Chicken Creek flows west out of the San Pitch Mountains (east of Levan).

West of Levan it turns southwest then southerly into until it flows into the north end of the Chicken Creek Reservoir.

After leaving the west side of the Mona Reservoir, the Current Creek flows northwest out of the valley, through Goshen Canyon[12] and on to Utah Lake.

In addition, the Willow,[13] Mona,[14] North,[15] and Mendenhall[16] creeks all flow west out of the Wasatch Range, but dissipate shortly after reaching the valley floor.

Running east of, but roughly parallel to I-15, they continue north to pass under the freeway at a point just southwest of Nephi.

After passing by the western edges of both Nephi and Mona, the tracks leave the north end of the valley.

Utah State Route 54 begins at Main Street in Mona and runs easterly to end at interchange with I-15.