Figure 2
Slopes of the riverbed of the study area (a) and water depth at sampling St. a to h (b).
In (a), 
and 
indicates measured relative height in section a–c and section d–h, respectively. 
show a point of steep drop. In (b), 
show a station where set for regular census. Bar on st. a, c, d and h indicate water depth measured for calculation of shear stress on 30 May 2008.
