Table 2 Assigned permeability values and ranges for the different permeability shoreline classes with an explanation.

From: A global coastal permeability dataset (CoPerm 1.0)

Permeability Class

Permeability value (m²)

Permeability Range (m²)

Permeability source

Sandy shore (B1 - Low Waves)

10−11

10−11–3*10−11

Value: Lowest value of beach the permeability range stated by61,62,63,64 Range: Whole range for all beach literature values stated

Sandy shore (B2 - Mid waves)

2*10−11

10−11–3*10−11

Value: Middle value of beach permeability range stated by61,62,63,64 Range: Whole range for all beach literature values stated

Sandy shore (B3 - High Waves)

3*10−11

10−11–3*10−11

Value: The highest value of beach permeability range stated by61,62,63,64 Range: Whole range for all beach literature values stated

Concreted shore (P)

10−20

10−20–10−20

Considered as Impermeable

Muddy shore (M1)

5*10−13

10−13–10−12

Value: Average of the range of literature values65,66,67,68,69

Mangrove shore (M2)

5*10−12

10−12–10−11

Value: Average of range70,71

Rocky Shore (R)

Permeability taken from19

The range was taken from19

Rocky shorelines are assigned the permeability values stated by19 for that location.

Coral shore (C)

1.2*10−10

2.9*10−11–4.6*10−10

Average of range for coral sand72