Open Access
Table 2
Minimal length (curvilinear longitudinal extent measured along the river central axis) of sampling points, after Belliard et al. (2012). Reading: for rivers between 3 and 30 m wide, the length of the sampling point has to exceed twenty times its mean wetted width.
| Mean wetted width (MWW) | Minimal length of the sampling point |
|---|---|
| <3 m | 60 m |
| From 3 m to 30 m | 20 × MWW |
| From 30 m to 60 m | 600 m |
| >60 m | 10 × MWW |
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