The need for river catchments to be planned and managed as a whole.

The river catchment is mostly used for livestock grazing.

The river catchment covers an area of 489 km2.

The Peninsula's river catchments are noted for their exceptional hydrological integrity.

The valley, as with other river catchments in Chile, is often under threat from large-scale, external economic interests.

The absence of affordable treatment systems forces farmers to spread the manure on the fields, from where it runs off into river catchments.

The task of the authorities is to manage all water services within a geographical area determined by river catchments.

During the floods of 2007, more than a full month's rainfall fell in 24 hours on the river catchment.

Region boundaries are generally based on river catchments, reflecting that floods are a major part of their work.

Almost 40% of the global population live in river catchments extending across more than two countries.