1.Measuring and Calculating Stream Discharge
Rating Guidelines, and Assessing the Control also apply to discharges measured ... the midsection method involves the calculation of discharge in individual ... The primary mechanical current meter used in wading measurement applications ..... tenths and two tenths velocity samples, thus weighting the six tenths sample as ...
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2.THE WATER SURVEY OF CANADA
4. computation of discharge, including standard mid-section method, depth ... is also measured directly by means of a velocity meter. ... Note that this example is for open-water conditions; recording of ice measurements is .... The formula used to .... Plot the discharge measurement on the rating curve in the Field Data Book.
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3.Measuring River Discharge
Aug 8, 2002 ... River discharge is an important property and is frequently monitored along ... must be calculated from the average stream velocity (V) and cross-sectional ... the surface. V v(z) z. S h vi xi. 0 LEW. REW hi wi. Current. Meter ... width (wi) between the midpoints of the adjacent .... Example rating curve for a canal ...
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4.CALCULATION OF FLOOD DISCHARGE Q USING THE
Area Velocity Method, (ii) the Slope Area Method, (iii) the Weir Method and (iv) the Volumetric Method. ... cross section with the dotted curves representing lines of equal velocity. ... He became interested in the problem of flow of water in rivers and canals and ... Figure 5 shows a rating curve (straight line) for a current meter.
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5.3 LITERATURE REVIEW
presented a rigorous dimensional analysis of this problem. ... For example, equation 2.2 is not applicable for methods that view the rating ... Development of the current practice of developing and applying stage-discharge ratings (also ... in which V is the mean water velocity in the cross section (meters per second); R is the ...
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6.Field Methods For Hydrologic and Environmental Studies
Example of streamgage and associated stage-discharge rating relation. ... Conventional Current meter discharge measurements .... because of mercury problem. ..... measurements, calculating the mean velocity of the measurement, and relating ..... Schematic showing mid-section discharge measurement method. 31 ...
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7.Surface Water Data Acquisition Systems
current meters, velocity-area methods, gauging structures, thin-plate weirs, Crump ... section and the discharge is a function of the cross-sectional area of flow, the ... discharge rating curve is obtained. ... discharge by means of a discharge table to calculate volumes. ... The so-called bubble recorder solves this problem.
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8.Water Resources Research Report
flow velocity, depth and channel cross-section dimensions. The measurements ... Keywords: discharge calculation, fuzzy arithmetic, fuzzy number, fuzzy nonlinear ..... ISO-748 suggested uncertainties for current meter rating (at 95% confidence ... Discharge measurement using mid section method (After Herschy 1995) ... 10 ...
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