General:

• American Water Works Association

• Boss International: For SMS and GMS and related documentation

• Liina Ladon's Chemistry Tutoring Homepage at Towson University

• UNC Chemistry Fundamentals Program

• Concentration Units

• USGS Surface-water quality and flow Modeling Interest Group (SMIG)

• USGS Standard Methods for Stream Tracer Injection Studies

• CACHE: Educational Resources for Chemical Engineers

• S.O.S. Mathematics: Differential Equations

• The Kalman Filter: Tutorials, References and Research

MATLAB Tutorials and related links:

• Edward Neuman's MATLAB Tutorials 

• MATLAB Primer by Kermit Sigmon

• MATLAB ODE Examples

• HTML and PDF MATLAB Documentation from The Mathworks Inc.

• MATLAB FAQ from the University of Texas

• "The MATLAB ODE Suite" by L.F. Shampine and M.W. Reichelt, SIAM J. Scientific Computing, Vol. 18, No.1, pp. 1-22, Jannuary 1997.

• How to export publication-quality graphs using MATLAB?

Excel Links:

• Solving Differential Equations using Excel

• Wang's Computer Methods in Chemical Engineering

Models:

• CE-QUAL-W2 Model

• The DieCast Model

Technical Presentation:

• Graph Quality - Abominable  Graphs

• Good graphs for better business

• Technical Presentation Tips