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Topographic factors of a site are identified as having an effect on the vine production by influencing the mesoclimate of the site (Gladstones, 1992).Topography controls sun aspect and solar influx thus it plays an important role in grapevine growth and quality. The dominant topographic features that influence vine performance appear to be elevation, slope, aspect and the presence of water bodies.

Elevation has a considerable influence on the minimum and maximum temperatures of a particular site. One of the principal concerns for growing grapes is protecting grapevines from frosts. Frosts are caused by sudden temperature drops during the night. Avoiding frost damage should be paramount in potential site selection hence a site with relatively small temperature differences between day and night is most desirable.

Slope is either the angle of inclination, relative to the horizontal, of any part of the Earth's surface, or the inclined surface itself. Slight to moderate slopes are considered acceptable for grape growing because the cold air drains relatively quickly at night, consequently preventing vineyards from frost injuries (good cold air drainage). Aspect determines the amount of sunlight exposure which consequently influences grape quality.

Data Descriptions


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Bell Mountain
Escondido Valley
Fredericksburg (THC)
Mesilla Valley
Texas Davis Mountains
Texas Hill Country
Texas High Plains

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Texas High Plains Texas Hill Country Texoma Mesilla Valley Escondido Valley Fredericksburg (THC) Bell Mountain Texas Davis Mountains

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