Lake Hamrin is a human-made lake approximately 50 km (31 mi) north-east of Baqubah, in Iraq's Diyala Governorate.

The Hemrin Dam, which creates Lake Hamrin, was established in 1981 as an artificial dam to hold over two billion cubic metres of water.

It is a source of fish and also provides water for nearby date palm orchards and other farms.

In June 2008, it was reported that due to Iranian damming of the Alwand River, the lake had lost nearly 80% of its capacity.

[2][3] The Hamrin sites probably shared a localised form of the Ubaid culture and possibly operated as one administrative unit based out of Tell Abada.