Padre Bay is a bay within Lake Powell, on the Colorado River in Kane County and San Juan County, Utah. Its waters reach an elevation of 3,704 feet. Located 13.5 miles northeast of Glen Canyon Dam in Lake Powell, Padre Bay is the largest expanse of open water on the man made lake. Padre Bay is bounded by Alstrom Point and the island of Gunsight B…Padre Bay is a bay within Lake Powell, on the Colorado River in Kane County and San Juan County, Utah. Its waters reach an elevation of 3,704 feet. Located 13.5 miles northeast of Glen Canyon Dam in Lake Powell, Padre Bay is the largest expanse of open water on the man made lake. Padre Bay is bounded by Alstrom Point and the island of Gunsight Butte on the west and Gooseneck Point on the east. Cookie Jar Butte lies between them on the north shore of the bay. At the southern mouth of the bay, north of Dominguez Butte on the south shore is Padres Butte, formerly an island, now with lower water in the lake the tip of Padre Point. Padres Butte marks the location of the Crossing of the Fathers, which is approximately a mile west of the butte. It currently lies under nearly four hundred feet of water.