Such as dam construction, dam operations, sediment control, change in salt regime, wetland filling for mosquito control, levees and dikes, surface water diversion, groundwater pumping, channelization, and artificial lakes. This category focuses on the human activities that lead to either not enough water or too much water in the ecosystem in question. Note that homogenizing flows to a constant level may be outside the 'natural range of variation.' Dredging belongs in Shipping Lanes.

This category is part of a standard classification of ‘Direct threats to biodiversity’ edited by the World Conservation Union (IUCN) and in use by all major biodiversity conservation organizations such as The Nature Conservancy, Birdlife International, Wildlife Conservation Society, and World Wildlife Fund. For a detailed description of the classification please go here. To search for solutions, service providers, consultants, practitioners, and funders related to this conservation threat use the Conservation Pages.