HORSE HEAVEN HILLS

The Horse Heaven Hills is 570,000 acres (230,671 ha) in size, with elevations ranging from 200 feet (61 m) above sea level along the Columbia River to 1,800 feet (549 m) at the northern boundary. Pressure differentials cause significant winds in the Horse Heaven Hills. These winds reduce canopy size and toughen grape skins, as well as protect against mold and rot. The nearby Columbia River also has a moderating effect on temperatures, reducing the risk of early and late season frosts, which can be a problem in nearby areas. The area is among Washington’s warmer growing regions, allowing a wide variety of grapes to ripen successfully.

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