The results may bs used in assessing forecast accuracy and in determiming
the scale of filtration-test work.

Yu. Miroshnikov, drawing on the Damascus piedmont depression (Syria)
as an example, shows that it is possible to substantially increase the accuracy
of regional assessment of usable water resources when analyzing the

experience gained in ground water use.
: A. Popyrina examines the anthropogenic changes in the Bengal delta
landscapes. Forecasts of agriculture development in the Silhet, Chittagong,
etc. valleys are provided.

V. Mamontov gives a computation and analyzes the process of water
inflow into mining developments.

Two new articles by A. Abramov and I. Solomin with a theoretical
substantiation of irrigation optimal rates and water expenditure experience
conclude the issue.

The editors hope it will be of interest to the researchers, designers and
other workers employed in water use and protection of the environment.