Engineering Hydrology: Chapter 5 Streamflow Measurement Notes | Study Material
Engineering Hydrology Chapter 5 Streamflow Measurement
ENGINEERING HYDROLOGY (ENCE 306)
Chapter 5: Streamflow Measurement
5 Hours 8 Marks

Streamflow Measurement Notes

About this Chapter

This document contains the complete study material for Chapter 5: Streamflow Measurement. Accurately measuring the flow of water in streams and rivers is essential for hydrological analysis.

In this chapter, students will learn about stream gauging site selection, stage and velocity measurement techniques, and the velocity area method. It also covers streamflow estimation through structures, the slope area method, and the development and application of rating curves.

Syllabus: Streamflow Measurement

5. Streamflow Measurement
5 hours
8 Marks

5.1 Stream gauging: Site selection for stage and flow measurements

5.2 Stage measurement: Staff and wire gauges; Float gauge recorder; Bubble gauge; Radar sensor

5.3 Velocity measurement techniques

5.4 Streamflow measurement: Velocity area method (Using current meter)

5.5 Streamflow measurement through structures (Notches, weirs and flumes)

5.6 Streamflow estimation by slope area method

5.7 Rating curves: Development (Permanent and shifting control); Extrapolation and application

Micro Syllabus

5. Streamflow Measurement
5L · 4T · 9P · Week 8
Topic / Sub-topic Description Depth Code Hours
5.1 Stream Gauging Site selection criteria for stage and flow measurements. D, E, I, SK 0.5
5.2 Stage Measurement Manual methods (staff gauge, wire gauge); automatic methods (float gauge recorder, bubble gauge, radar). VP, D, E, I, SK 0.5
5.3 Velocity Measurement Techniques Velocity measurement by current meter, floats, and salt dilution methods. E, I, SK, PR, EXP, NUM 1
5.4 Streamflow Measurement by Velocity Area Method Streamflow measurement by velocity area method in lab or in field with full report. E, I, SK, PR, EXP, NUM 1
5.5 Streamflow Estimation by Slope Area Method Streamflow estimation using the slope area method. E, I, SK, NUM 0.5
5.6 Streamflow Measurement through Structures Streamflow measurement through hydraulic structures; formulae for notches, weirs, and flumes. E, I, SK 0.5
5.7 Rating Curves Development of rating curves (permanent and shifting control); extrapolation and application in streamflow estimation. E, I, SK, NUM 1
Evaluation: QA, Q
Lecture Notes (By KN Dulal & Mithun Kuwar)

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Special thanks to KN Dulal and Mithun Kuwar Sir for providing these comprehensive lecture notes.

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