Agriculture Reference
In-Depth Information
view with the actual contours. Notice that the contours bow downhill
along the driveway, indicating that the driveway was constructed with a
crown. The crown directs water to the outer edges of the driveway sur-
face toward the curb.
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3
3
3
6
58
5
5
5
5
58
35
55
3
3
5
5
5
55
6” Curb
6
6” C
6” C
6” C
6” C
6” C
6” C
6
6” C
6” C
6” C
6” C
6” C
6 C
6” C
6” C
6” C
6” C
urb
urb
urb
ur
r
34
3
3
3
4
33
3
3
3
3
3
3
3
Figures 8.4-a and 8.4-B
Valley, ravine, or swale landform signature
In the photograph in Figure 8.4-A the contours are oriented uphill,
creating a swale or valley landform, while the contours in the road bow
downhill to form a crown landform. Figure 8.4-B is a plan view of the
same general area where the photograph was taken. You can readily see
how the contours create a swale condition along the north side of the
road, as well as a crown along the centerline of the same road.
38
36
34
32
30
Figures 8.5-a and 8.5-B
Uniform slope landform signature
