The irrigation methods in alluvial fans differ according to the hydrological regime of the river, the shape of the fan, and the natural resources available to maintain human life.

The purpose of the park is conservation of the nature complex including geological formations, hydrological regimes, flora and fauna, and endangered species.

The removal of the protective forest cover leads to accelerated soil erosion, which in turn affects local hydrological regimes and causes accelerated silting of water-bodies.

Much of the emissions from peatlands in Borneo are due to changes in their hydrological regime, caused by drainage from nearby plantations (particularly oil palm).

Improvements in the management of the hydrological regime of coastal lagoons would also further raise aggregate production.

By taking into account hydrological regimes, physiography land use, and existing, planned and potential resource developments, the Mekong is divided into six distinct reaches:

There is little evidence from the last 45 years of data of any systematic changes in the hydrological regime of the Mekong.

As result of this development the hydrological regime of the Litani River has been divided into two zones.

In particular, the hydrological regime of the Mediterranean and southern areas of the European Union requires specific solutions in this respect.

Environmental issues include water quality (eutrophication and pollutants), changes in the hydrological regime, and flooding control.