The Hydraulics of Open Channel Flow: an Introduction ERRATA & UPDATES
CHANSON, H. (1999). "The Hydraulics of Open Channel Flow : An Introduction." Butterworth-Heinemann, Oxford, UK, 512 pages
CHANSON, H. (1999). "The Hydraulics of Open Channel Flow : An Introduction." Edward Arnold, London, UK
[ISBN 0 340 74067 1]

"Without a doubt, this is the best introduction to the hydraulics of open channel flow that I have yet to read."
Professor S.N. LANE, University of Leeds in Environmental Conservation, 2001 {Read Full Review}
"This is an excellent book for undergraduate and graduate students in civil engineering interested in open channel flow, and a very useful resource text for those interested in hydraulics outside engineering field." Professor P. BATES, University of Bristol in Hydrological Processes, 2000 {Read Full Review}
"This book can be strongly recommended to students and engineers", Professor JOVANOVIC, University of Belgrade in Urban Water, 1999 {Read Ful Review}

Spanish Edition published by McGraw Hill Interamericana {}

Chinese Edition published by Hydrology Bureau of Yellow River Conservancy Committee, March 2003 (ISBN 7-80621-529-8).
    Order form : (Chinese edition)

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Download chapter samples : Chap. 10: Sediment Transport Mechanisms 1. Bed-load Transport & Chap. 14: Physical Modelling of Hydraulics
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Hydraulics of open channel flow: an introduction

ORDER FORM : (English edition) (Chinese edition)

SECOND EDITION : CHANSON, H. (2004). "The Hydraulics of Open Channel Flow : An Introduction." Butterworth-Heinemann, Oxford, UK, 2nd edition (ISBN 0 7506 5978 5).

Corrections / Errata
Internet resources
Hubert Chanson's Homepage
Hubert Chanson's Reprints of research papers
Internet Resources in Hydraulic Engineering


McGraw-Hill Interamericana Page xxiv

GAUCKLER : Philippe Gaspard GAUCKLER (1826-1905) was a French engineer and member of the French 'Corps des Ponts-et-Chaussées'. He re-analysed the experimental data of DARCY and BAZIN (1865), and in 1867 he presented a flow resistance formula for open channel flows (Gauckler-Manning formula) sometimes called improperly the Manning equation (GAUCKLER 1867). His son was Directeur des Antiquités et des Beaux-Arts (Director of Anquities and Fine Arts) for the French Republic in Tunisia and he directed an extensive survey of Roman hydraulic works in Tunisia.
Page 25
Equation (3-9a): The last term on the right handside of the equation should be : Patm/(r*g) .
Page 66
Solution of the application: The first equation should be : q = V1 d1 = V3 d3 .
Page 67
In Table 4.1, the Petitcodiac river is located in Canada (Bay of Fundy).
Page 70
Application, solution: In the table of iterative results, the first estimate of d2 should be : d2 = dc = 6.34 m .
For Vsrg = 0, the positive surge is a steady hydraulic jump. With an upstream Froude number close to unity (Fr1 = 1.43), the downstream flow depth is slightly greater than the critical depth.
Page 88
Application No. 1: In the table of results, column 3, the correct values of the Darcy friction factors are : f = 0.016, 0.0134, 0.0131, 0.0131.
Page 235
Equation (12.8) should be :
               to = 1/2 r V2 h2/(l d)            (12.8)
There should be 1/2 times the density times the velocity square …
Pages 241, 243 & 244
Equation (12.8) should be corrected to:
               to = 1/2 r V2 h2/(l d)            (12.8)
The solution in page 244 should be :
                Complete calculations give : V = 0.9 m/s, to'= 1.95 Pa, to" = 0.70 Pa, h = 0.15 m, l = 9.9 m.
Page 279
Table 14.1, Column 4 : The scaling ratio of the discharge per unit width for a Froude law (distorted model) should be Zr3/2 .

Page 322
Equation (17.4) should be :


It should be the square-root of 2 times g, where g is the gravity acceleration.

Pages 378-379
Figure 19.5 Hydraulic calculations of upstream head above invert bed for box culverts with  Inlet Control (Concrete Pipe Association of Australia 1991) (DOUBLE-CLICK  for full size .WMF file) or
Figure 19.6 Hydraulic calculations of total head losses for concrete box culverts flowing full  (i.e. drowned) (Concrete Pipe Association of Australia 1991)  (DOUBLE-CLICK for full size .TIF file) or
(Notes : (1) the old Figure 19.5 was for Inlet control calculations of circular pipes; (2)  the old Figure 19.6 was for Inlet control calculations of box culverts; (3) double-click on the pictures below to download the .GIF files)
Figure 19.5 - Box culvert Inlet control calculations Figure 19.6 - Box culvert Outlet control calculations


Page 294

Table 15.1: A further axample of computational models for open channel flows is HydroChan, a 1-D model for steady flow down flat slope (assuming hydrostatic pressure distribution and prismartic cross-section). Flow resistance may be computed using the Darcy friction factor (fully-rough-turbulent flow or based upon the Keulegan formula) and Gauckler-Manning formula.
Pages 311-312
A discussion of the teaching of hydraulic design may be found in :
CHANSON, H. (2001). "Teaching Hydraulic Design in an Australian Undergraduate Civil Engineering Curriculum." Jl of Hyd. Engrg., ASCE, Vol. 127, No. 12, pp. 1002-1008  (ISSN 0733-9429). (Download PDF File)
Pages 313-316
Further information on Minimum Energy Loss weirs may be found at :
    The Minimum Energy Loss (MEL) weir design : An overflow earthfill embankment dam {}
Page 332
On Page 332, Figure 17.11 must be updated based upon new results (CHANSON et al. 2000). In skimming flows down a stepped chute, the re-analysis of over 650 prototype and laboratory data suggests that the equivalent friction factor is about 0.2. The result is consistent with an analytical model of the the cavity flow (CHANSON et al. 2000, CHANSON and TOOMBES 2001).

Fig. 17.11 - Flow velocity at d/s end of chute
References :
CHANSON, H., YASUDA,Y., and OHTSU, I.(2000). "Flow Resistance in Skimming Flow : a Critical Review." Intl Workshop on Hydraulics of Stepped Spillways, Zürich, Switzerland, H.E. MINOR & W.H. HAGER Editors, Balkema Publ., pp. 95-102.
CHANSON, H. (2000). "Forum article. Hydraulics of Stepped Spillways: Current Status", Jl of Hyd. Engrg., ASCE, Vol. 126, No. 9, pp. 636-637 (ISSN 0733-9429).

Page 337
A relevant discussion on hydraulic jumps at an abrupt drop includes :
MOSSA, M., PETRILLO, A., and CHANSON, H. (2002). "Tailwater Level Effects on Flow Conditions at an Abrupt Drop." Jl of Hyd. Res., IAHR, Vol. 40, No. 4 (ISSN 0733-9429). (Download PDF Preprint File)
Page 410-417
On Page 332, Figure 17.11 must be updated based upon new results (CHANSON et al. 2000). In skimming flows down a stepped chute, the re-analysis of over 650 prototype and laboratory data suggests that the equivalent friction factor is about 0.2. The result is consistent with an analytical model of the the cavity flow (CHANSON et al. 2000, CHANSON and TOOMBES 2001). New Figure A4.5 : Click HERE.
Page 387-390
Further illustrations of Minimum Energy Loss culverts in operation may be found at :
    Hydraulics of Minimum Energy Loss (MEL) culverts and bridge waterways {}
A discussion on the MEL culvert design is developed in :
    CHANSON, H. (2000), "Introducing Originality and Innovation in Engineering Teaching: the Hydraulic Design of Culverts." European Journal of Engineering Education, Vol. 25, No. 4, pp. 377-391.

Hydraulic engineering resources

Photographs of rivers, coasts, hydraulic structures, ... {}
Technical resources in hydraulic resources {}
Reprints in hydraulic engineering {}
Chicago Calumet waterway plant {}
Petit-saut dam (French Guyana): aeration cascade
       Petit-Saut dam : photographs, dam details

Weirs and small dams on the Kent river (UK)

Rivers Seen from Space

Inlets on-line (USACE)
Estuaries in South Africa
Great Barrier Reef, National Geographic  {}
Oceanic turbulence around Japanese islands    {}

The Aral sea

Photographs { plains}
NASA Earth Observatory (1)(2)
TETHYS (Kazakhstan) and JRAK (Japan) Ecological expedition {}
Trip in Uzbekistan {}

General resources

NASA Earth observatory {}
NASA rain, wind and air-sea gas exchange research  {}
National Weather Service Office of Hydrology
El Niño Information in California

Structurae, International Database and Gallery of Structures

Gallery of photographs in fluid dynamics by Mark Kramer

Qanats : an historical account

ASME Database (American Society of Mechanical Engineers)
ICEnet: The Institution of Civil Engineers, UK Homepage
Japan Society of Civil Engineers
ASCE - American Society of Civil Engineers Homepage
ASME - American Society of Mechanical Engineers

ENPC - Ponts et Chaussees
IAHR homepage (International Association for Hydraulic Research)

 US Geological Survey

About Professor Hubert CHANSON
Hubert CHANSON is a Professor in Civil Engineering, Hydraulic Engineering and Applied Fluid Mechanics, at the University of Queeensland, Australia. His research interests include design of hydraulic structures, experimental investigations of two-phase flows, coastal hydrodynamics, water quality modelling, environmental management and natural resources. He has been an active consultant for both governmental agencies and private organisations. His publication record includes over 550 international refereed papers and his work was cited over 2,700 times since 1990. Hubert Chanson is the author of several books : "Hydraulic Design of Stepped Cascades, Channels, Weirs and Spillways" (Pergamon, 1995), "Air Bubble Entrainment in Free-Surface Turbulent Shear Flows" (Academic Press, 1997), "The Hydraulics of Open Channel Flow : An Introduction" (Butterworth-Heinemann, 1st edition 1999, 2nd editon 2004), "The Hydraulics of Stepped Chutes and Spillways" (Balkema, 2001), "Environmental Hydraulics of Open Channel Flows" (Butterworth-Heinemann, 2004), "Applied Hydrodynamics: an Introduction of Ideal and Real Fluid Flows" (CRC Press, 2009), and "Tidal Bores, Aegir, Eagre, Mascaret, Pororoca: Theory And Observations" (World Scientific, 2011). He co-authored two further books "Fluid Mechanics for Ecologists" (IPC Press, 2002) and "Fluid Mechanics for Ecologists. Student Edition" (IPC, 2006). His textbook "The Hydraulics of Open Channel Flows : An Introduction" has already been translated into Spanish (McGraw-Hill Interamericana) and Chinese (Hydrology Bureau of Yellow River Conservancy Committee), and the second edition was published in 2004. In 2003, the IAHR presented him with the 13th Arthur Ippen Award for outstanding achievements in hydraulic engineering. The American Society of Civil Engineers, Environmental and Water Resources Institute (ASCE-EWRI) presented him with the 2004 award for the Best Practice paper in the Journal of Irrigation and Drainage Engineering ("Energy Dissipation and Air Entrainment in Stepped Storm Waterway" by Chanson and Toombes 2002). Hubert Chanson edited further several books : "Fluvial, Environmental and Coastal Developments in Hydraulic Engineering" (Mossa, Yasuda & Chanson 2004, Balkema), "Hydraulics. The Next Wave" (Chanson & Macintosh 2004, Engineers Australia), "Hydraulic Structures: a Challenge to Engineers and Researchers" (Matos & Chanson 2006, The University of Queensland), "Experiences and Challenges in Sewers: Measurements and Hydrodynamics" (Larrate & Chanson 2008, The University of Queensland), "Hydraulic Structures: Useful Water Harvesting Systems or Relics?" (Janssen & Chanson 2010, The University of Queensland), "Balance and Uncertainty: Water in a Changing World" (Valentine et al. 2011, Engineers Australia). He chaired the Organisation of the 34th IAHR World Congress held in Brisbane, Australia between 26 June and 1 July 2011.
 His Internet home page is He also developed a gallery of photographs website {} that received more than 2,000 hits per month since inception.

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