|WORLD METEOROLOGICAL ORGANIZATION||
|Explanation of the criteria for classification and numbering of components|| K70.1.01
|Explanation of the dates on the component's description|
1. Purpose and objectives
To help engineers, aid and agency workers to improve surface water drainage in low-income communities. To help in the understanding of surface
water drainage problems so that work can be done towards finding realistic
During flood, runoff mixes with human waste and can spread the agents of bad health in a community. This book is a manual for evaluation of drainage system performance. It focuses on three questions of particular relevance to low-income urban areas: (i) what is drainage performance and
After the introduction there are two chapters giving a general review of the factors affecting flooding in urban catchments. Chapter 4 considers general approaches to drainage evaluation and contains a key to the remainder of the manual.
Following chapters present ways to define and study the characteristics of the catchment of a system, to assess the nature of a flooding problem, and to estimate the size of flows that will pass through drains. An annex deals with the use of limited rainfall data. Methods of estimating the capacity of networks are then assessed, emphasizing the necessity of looking at the actual state of the system rather than its original design.
Field methods for studying the structural condition of a network are presented; the evaluation of operation and maintenance are described. Procedures for observing drainage networks in action during storms are set out together with suggestions on how these can be organized. The last chapter summarizes the main points and conclusions in the manual.
This manual not only gives a comprehensive account of how storm drainage systems may be evaluated, but also gives practical solutions to
how this may be done successfully with low-cost equipment and limited data and resources. Theory and detailed analysis is brought together in annexes to the chapters for ease of reference. The text is supported by many illustrations and diagrams. This manual is a definitive tool for municipal
and consulting engineers, students and instructors.
5. Operational requirements and restrictions
6. Form of presentation
Book of 134 pages, with 47 figures and 27 tables.
7. Operational experience
This manual is the outcome of two-and-a-half years of fieldwork in the
city of Indore in Madhya Pradesh, India.
8. Originator and technical support
The Indore Development Authority was supported by the British Department for International Development (DFID) in originating work on slum improvement. The Urban Poverty Alleviation Field Management Office of the DFID in Delhi gave technical assistance. The drainage evaluation project
From the UK HOMS Office, Centre for Ecology and Hydrology, Wallingford OXIO 8BB, UK. Generally for sale, but single copies available free at the
discretion of the UK HOMS Office. Also available from book retailers (ISBN
1 85339 432 7).
10. Conditions on use
Subject to the usual laws of copyright with respect to reproduction and distribution.
|(First entered:29 JAN 01||
Last updated: 13 DEC 00)