This comprehensive text by Dr. Steven C. Chapra gives an in depth overview of surface water-quality modeling methods and calcultations. The book in divided in 7 parts: Part I Completely Mixed Systems, Part II Incompeltely Mixed Systems, Part III Water-Quality Environments, Part IV Dissolved Oxygen and Pathogens, Part V Eutrophication and Temperature, Part VI Chemistry, and Part VII Toxics. 844 pages including an Index. Paperback. Excellent text for college courses or personal reference.