Surface Water Control (continued)

The bar helps keep traffic from wearing a water carrying groove through the drain. Install the bar at an angle of at least 45° and increase the angle as the grade approaches 5 percent or if the soils are very erodible (Figure 21 and Figure 22).

Figure 21—Waterbars need to be constructed
at a 24 to 60° angle to the trail. Water should
run off the trail before hitting the waterbar.

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