Problem statement The data pertaining to a stream-gauging operation at a gauging site are given below. The rating equation of the current meter is v=0.51 Ng + 0.03 m/s where NB second. Calculate the discharge in the stream. Distance from left water edge (m) Depth (m) Revolutions of a current meter kept at 0.6 depth Duration of observation (s) 0 0 0 0 1.0 1.1 39 100 3.0 2.0 58 100 5.0 2.5 112 150 7.0 2.0 90 150 9.0 1.7 45 100 = revolutions per 11.0 1.0 30 100 12.0 0 0 0

The data pertaining to a stream-gauging operation at a gauging site are given in the table below. The rating equation of the current meter is v=0.450 No + 0.004 m/s where N revolutions per second. Table A Stream-gauging Operation Data Distance from left water edge (m) NAMPI 0.0 1.5 4.5 7.5 10.5 13.5 16.5 18.0 Depth y (m) JOHNN-GO 0.0 0.8 1.5 2.4 2.5 1.4 0.7 0.0 Revolution of current meter kept at 0.6 m depth 0 60 80 130 125 52 42 0 Duration of observation (s) 0 90 90 120 120 60 60 0 -Draw the stream cross-section diving it into appropriate number of segments - Calculate the velocity in each segment - Calculate the area of each segment - Calculate segmental discharge -Determine the total discharge of the streami Write your answers correct to three decimal places. Please upload your own handwritten answer in dropbox.

The data from a stream gauging station during a measurement campaign are given below, compute the discharge in the river. Distance from left water edge 0 (m) Depth (m) Average velocity (m/sec) 0 1 1 1.0 0.25 3 2.6 0.35 5 3.1 0.5 7 2.5 0.45 9 0.9 0.3 10 lo 0 0

Triangular notch with vertical angle of 90° measures a flow rate. If the value of Cd = 0.6 and there was an error of 2.5 mm in the measurement the head, then calculate the percentage error in estimation of discharge of 21 lit/s.