In the last two centuries most of the fens were drained for agricultural land use. However, because of the low precipitation, the drainage systems were completed with a number of weirs as a prerequisite for intensive agricultural production in the 1970s and 1980s. Therefore, these regions have complex water resources management systems today, which are often integrated in the water resources management system of the whole river basin.The last decade, with dry summers and hot temperatures, shows that there is an increasing risk of droughts in these wetlands. Climate models forecast an additional threat, with increasing temperatures and decreasing precipitation in the summer months for the next few decades in north-east Germany. On the other hand, there are a lot of ways of enabling these areas to be used once more with groundwater levels more typical for wetlands.