Dummer - Character

Character

The Dümmer is, after the Steinhuder Meer, the second largest lake in Lower Saxony. With its water surface of 13.5 km ² - the area within the ring dyke including siltation zones is 16 km ² - and maximum water depth of just 1.50 m, it is good for swimming and water sports. The shallow lake with its flat beaches on the western and eastern shore is up to 5 km long from north to south and up to 3.4 km wide from west to east.

The lake is crossed by the River Hunte, which leaves the lake via several branches, the largest of which is not called the "Hunte" but the Lohne. Other branches are the Grawiede and the artificial Wätering, the Dorflohne, Schoddenlohne and Ompteda Canal. Only 13 km north of the lake and 3 km north of Diepholz all the branches of the Hunte are reunited.

The fish-filled lake, which is also a breeding and resting place for birds, has a variety of flora and fauna, which is why the western and the southern shore of the lake are largely protected.

Although the lake is only about a metre deep on average, very rich water sources and the Hunte itself ensure that its water level is relatively constant. Previously these headstreams combined with regular heavy rainfall to cause flooding, so that in the 1940s work began to build dykes around the lake. In the period 1941-1945 foreign forced labour wasa used for this on a large scale. The reclamation and subsequent lack of annual flooding resulted in algae growing in large quantities in the lake and hence depriving most other organisms of oxygen. The low water level was caused by heavy silting, also a result of dyking the lake. With the help of several locks, it was possible to control the high water levels artificially without greatly interfering with nature. Nevertheless, the Dümmer suffers from heavy nutrient pollution caused by intensive agriculture.

The remains of New Stone Age settlements have been found on the shores of the Dümmer.