Hadejia-Nguru wetlands

The Hadejia-Nguru wetlands in Yobe State in northern Nigeria, which include Nguru Lake, are ecologically and economically important.

They are threatened by reduced rainfall in recent years, a growing population and upstream dam construction.

They are formed where the Hadejia and Jama'are rivers meet lines of ancient sand dunes in a northeast–southwest alignment and break into numerous channels.

The wetlands support fishermen, who often also farm, and provide fuel wood and leaves used for making mats and ropes.

[4] A dam was built on the Hadejia river just upstream from the wetlands for irrigation purposes, completed in 1972, which has also affected flooding.

[2] Due to these changes, large areas of farming and grazing land and important fish ponds have either dried up along channels blocked by invasive Typha grass, or have been flooded.