The international hydrological decade — The international hydrological programme

This paper briefly summarises the activities of geographers within the International Hydrological Decade and proposals for further work on multidisciplinary international hydrological programmes. Within the next few years the geographical aspect in hydrological research should focus on the following topics:1.(1) Environmental effects of man-made lakes (a) Man-made lakes larger than 100km2 (b) Man-made lakes with a surface area of 10–100km2 (c) Small impoundments, smaller than 10km22.(2) Problems and effects of irrigation3.(3) Environmental effects of water control4.(4) The quantification of geographic parameters (vegetation, geomorphology, slope, hydrographic network, etc.)5.(5) Flood and drought catastrophes, distribution and effects6.(6) Hydrological mapping7.(7) Geographical criteria for conservation of water resources. (1) Environmental effects of man-made lakes (a) Man-made lakes larger than 100km2 (b) Man-made lakes with a surface area of 10–100km2 (c) Small impoundments, smaller than 10km2 (2) Problems and effects of irrigation (3) Environmental effects of water control (4) The quantification of geographic parameters (vegetation, geomorphology, slope, hydrographic network, etc.) (5) Flood and drought catastrophes, distribution and effects (6) Hydrological mapping (7) Geographical criteria for conservation of water resources.