The following list contains useful references related to scattergraphs and wastewater hydraulics:
Akgiray, Omer (2004). "Simple Formulae for Velocity, Depth of Flow, and Slope Calculations in Partially Filled Circular Pipes," Environmental Engineering Science, Volume 21, Number 3, 371-385.
Butler, D. and Davies, J.W. (2000). Urban Drainage, E & FN Spon, London.
Butler, D. and Pinkerton, B.R.C. (1987). Gravity Flow Pipe Design Charts, Thomas Telford, London.
Chow, V.T. (1959). Open-Channel Hydraulics, McGraw-Hill, Boston, MA.
Enfinger, K.L. and Kimbrough, H.R. (2004). "Scattergraph Principles and Practice - A Comparison of Various Applications of the Manning Equation," Proceedings of the Pipeline Division Specialty Conference; San Diego, CA; American Society of Civil Engineers: Reston, VA.
Enfinger, K.L. and Schutzbach, J.S. (2005). "Scattergraph Principles and Practice - Camp's Varying Roughness Coefficient Applied to Regressive Methods," Proceedings of the Pipeline Division Specialty Conference; Houston, TX; American Society of Civil Engineers: Reston, VA.
Hager, W.H. (1999). Wastewater Hydraulics, Springer, Berlin.
Lanfear, K.J. and Coll, J.J. (March 1978). "Modifying Manning's Equation for Flow Rate Estimates," Water and Sewage Works, 68-69.
Metcalf & Eddy (1981). Wastewater Engineering: Collection and Pumping of Wastewater, McGraw-Hill, New York, NY.
Stevens, P.L. (2001). "Peeling the Onion of Meter Accuracy - Two Steps to Evaluating Flow Meter Data," Proceedings of the Water Environment Federation Technical Exhibition and Conference, Atlanta, GA. Water Environment Federation: Alexandria, VA.
Stevens, P.L. and Sands, H.M. (1995). "SSOs Leave Telltale Signs in Deph-Velocity Scattergraphs," Seminar Publication - National Conference on Sanitary Sewer Overflows, United States Environmental Protection Agency, EPA/625/R-96/007; Washington, D.C.
Stevens, P.L. and Schutzbach, J.S. (1998). "New Diagnostic Tools Improve the Accuracy of the Manning Equation," Proceedings of the Water Environment Federation Technical Exhibition and Conference, Orlando, FL. Water Environment Federation: Alexandria, VA.
Tufte, E.R. (2001). The Visual Display of Quantitative Information, Second Edition, Graphics Press LLC, Cheshire, CT.
Water Research Centre (1987). A Guide to Short Term Flow Surveys of Sewer Systems, WRc Engineering, Wiltshire, England.