Answer Happy

3. The average current velocities at a cross section of a river are given below. The water depth and width of the cross-section are also given in Table 1. According to that draw the rating curve and find its equation.
Table 3. Measurements on the river Measurement Water Width (m) Average Date depth (m) Velocity (m/s) 02/04/2011 7 0.45 1.71 18/04/2011 7.05 0.52 1.91 04/05/2011 7 0.50 1.95 25/05/2011 5.8 0.33 0.83 15/06/2011 5.25 0.23 0.50 15/07/2011 1.35 0.21 0.70 15/08/2011 1.1 0.21 0.32 19/10/2011 2.2 0.21 0.25 21/11/2011 0.21 0.33 20/12/2011 5.1 0.21 0.30 11/04/2012 8.3 0.80 1.96 27/04/2012 7 0.51 1.88 11/05/2012 6.5 0.42 1.14 31/05/2012 0.28 0.76 16/06/2012 5.2. 0.20 0.23 5.2 5.4 width L 3L L water depth Figure 1: Cross-section of the river