Question

1. The following data are obtained from the current meter gauging of a stream, at a gauging station. Compute the stream discharge using mean section method.

Distance from one end of water surface (m)	depth of water(d) , (m)	Immersion of current meter below water surface (m)
		depth (m)	sec	rev
0	0	—	—	—
2	1	0.6	10	40
4	2.2	0.44	36	48
		1.76	20	50
6	4	0.8	40	57
		3.2	30	53
8	8	1.6	46	59
		6.4	33	57
10	4.2	0.84	33	51
		3.36	29	49
12	2.5	0.5	34	52
		2	29	53
14	1.2	0.72	16	48
16	0	—	—	—

Rating equation of current meter: v = 0.2 N + 0.04, where N = rev./sec, v = velocity (m/sec).                                                                              

Answer 1