Table of Contents

1 -  AS 3778.2.3-2001 MEASUREMENT OF WATER FLOW IN OPEN CHANNELS - GENERAL-DETERMINATION OF THE STAGE-DISCHARGE RELATIONSHIP
4 -  PREFACE
6 -  CONTENTS
7 -  1 Scope
7 -  2 Normative references
8 -  3 Definitions and symbols
8 -  4 Units of measurement
8 -  5 Principle of the stage-discharge relation
9 -  5.1 Controls
9 -  5.1.1 General
9 -  5.2 Governing hydraulic equations
10 -  5.3 Complexities of stage-discharge relations
11 -  6 Stage-discharge calibration of a gauging station
11 -  6.1 General
11 -  6.2 General preparation of a stage-discharge relation
11 -  6.2.1 General
11 -  6.2.2 List of discharge measurements
12 -  6.2.3 Arithmetic plotting scales
12 -  6.2.4 Logarithmic plotting scales
16 -  6.3 Curve fitting
16 -  6.3.1 General
16 -  6.3.2 Graphical curves
16 -  6.3.3 Hydraulic equation curves
17 -  6.3.4 Mathematical rating curves
17 -  6.4 Combination control stage-discharge relations
17 -  6.5 Stable stage-discharge relations
18 -  6.6 Unstable stage-discharge relations
18 -  6.7 Shifting controls
19 -  6.8 Variable backwater effects
19 -  6.8.1 General
19 -  6.8.2 Downstream backwater influences
20 -  6.8.3 Ice effects
21 -  6.8.4 Hysteresis effect, or loop ratings
22 -  6.8.5 Tidal discharge measurements - Loop ratings
22 -  6.9 Extrapolation of the stage-discharge relation
23 -  6.10 Rating tables
24 -  7 Methods of testing stage-discharge relations
24 -  8 Uncertainty in the stage-discharge relation
24 -  8.1 General
24 -  8.2 Example of uncertainty calculations for individual gaugings
27 -  8.3 Example of calculating the uncertainty of the daily mean discharge
28 -  Annex A - Uncertainty in stage-discharge relation and in continuous measurement of discharge
28 -  A.1 General
28 -  A.2 Statistical analysis of the stage-discharge relation
29 -  A.3 Uncertainty in the daily mean discharge
29 -  A.4 Uncertainty in the monthly and annual mean discharges
30 -  A.5 Uncertainty in the measured stage
31 -  Annex B - Bibliography
32 -  TECHNICAL CORRIGENDUM 1

Abstract

This Standard is identical to and has been reproduced from ISO 1100-2:1998.

General Product Information

Published
Document Type	Standard
Status	Current
Publisher	Standards Australia
Pages
ISBN
Committee	CE-024
Supersedes	DR 00115 CP AS 3778.2.3-1990