Sewer systems constitute a very significant heritage in European cities. Their structural quality and functional efficiency are key parameters to guarantee the transfer of domestic and industrial wastewater to treatment plants without infiltration nor exfiltration. Infiltration of groundwater is particularly detrimental to treatment plant efficiency, while exfiltration of wastewater can lead to groundwater contamination. The European research project APUSS (Assessing infiltration and exfiltration on the Performance of Urban Sewer Systems) was devoted to sewer infiltration and exfiltration questions. It was structured in three main Work Areas dealing respectively with i) the development of new measurement methods based on tracer experiments and accounting for detailed uncertainty analyses, ii) the implementation of models and software tools to integrate structural and experimental data and to facilitate data display, operational management and decision-making processes and iii) the integration of economic and operational questions by means of cost estimation, economic evaluation, performance indicators and multi-criteria methods applied to investment/rehabilitation strategies. This final report describes the objectives, methods and main results for each Work Area. References to detailed methods, protocols, reports and tools are given in this final report which will be an invaluable source of information for all those concerned with the performance of urban sewer systems.

Computational hydraulics and hydrologic modeling are rapidly developing fields with a wide range of applications in areas ranging from wastewater disposal and stormwater management to civil and environmental engineering. These fields are full of promise, but the abundance of literature that now exists contains many new terms that are not always defined. Computational Hydraulics and Hydrology: An Illustrated Dictionary defines more that 4,000 basic terms and phrases related to water conveyance with emphasis on computational hydraulics and hydrologic modeling. Compiled by Nicolas G. Adrien, a noted consulting engineer with three decades of experience, this dictionary includes detailed references to actual modeling studies, nearly 100 illustrations, 150 equations and formulas, and many notations. It also includes a chapter of application examples and another containing more than 6,000 related terms with a list of resources where interested readers can find additional definitions. Other dictionaries and glossaries related to these areas tend to be either dated or much narrower in scope. This dictionary offers broad, practice-based coverage of terms culled directly from the latest texts, references, and actual engineering reports. Computational Hydraulics and Hydrology: An Illustrated Dictionary stands alone in providing ready access to the vocabulary of these subjects.

Some vols. include supplemental journals of "such proceedings of the sessions, as, during the time they were depending, were ordered to be kept secret, and respecting which the injunction of secrecy was afterwards taken off by the order of the House."