Location

Measured

Notes

Average upstream channel width

3.650 m

Averaged over 50 m distance.

Average upstream channel depth

2.186 m

Depth before flooding of adjacent property occurs. Averaged over 50 m distance.

Average upstream channel gradient

1/94

Averaged over 50 m distance.

Culvert dimensions

Base rectangle: 3.4 m wide × 0.85 m deep.

Top section: Parabolic arch with height = 1.125 m, base 3.4 m.

The culvert is built in random natural stone, pointed with mortar and has a concrete floor slab.

Culvert gradient

1/21.5

Averaged over 5.8 m distance.

Average downstream channel width.

4.050 m

Averaged over 50 m distance.

Average downstream channel gradient

1/36

Averaged over 50 m distance.

Average downstream channel depth.

1.760 m

Depth before flooding of adjacent property occurs. Averaged over 50 m distance.