The East Fork of Amon Creek rises in the Horse Heaven Hills south of Kennewick and typically only flows when the irrigation canals are full.

It then flows past orchards, under Clearwater Avenue, briefly through Amon Basin, and enters the Meadow Springs Country Club.

The Amon Basin has unique ecological significance to the area, especially in the wetlands along the West Fork where several different kinds of animals can be seen.

South of Thompson Hill, many people make use of small two-track roads that cross the East Fork for off-roading.

[5] At the mouth of the creek in the Yakima River Delta there is a dense forest administered by the USACE which holds many trails for hiking and mountain biking.

In Amon Basin, there are about a half dozen beaver dams which form small ponds along the length of the creek in that area.

[7] Around 8 million years ago, as the Cascade Mountains were starting to rise, the Columbia River changed its course to flow through what is now Wallula Gap.

Around 10,000 years ago, the Missoula Floods further altered the landscape, opening up the Horn Rapids area for the Yakima River to flow through.

Though the floodplain upstream of the golf course served its purpose well, the upper two reservoirs were filled with four feet of sediment, decreasing the depth to between 12 and 18 inches (30 to 46 cm).

[5] In 2008, over 16 tons of illegally dumped trash were removed from the newly established Amon Creek Nature Preserve along the West Fork directly upstream of the golf course.