Dryness in the rhon: the small sinn is partially dry

Dryness in the rhon: the small sinn is partially dry

None of the residents in kothen have experienced this before, nor have they heard of it. But after this summer, the small sinn has also been hit: it is dry, at least partially. From the border of the troop station you can walk on about 500 meters of dry fubes in the creek bed. Beyond the border fence, too, a dry creek bed as far as the eye can see. Christoph spiekermann from the federal forest is responsible for the area from schmelzhof to the border and estimates that there is no more water in the small sinn in his area for about 200 meters. The wells are probably still damming up, at least his colleague manfred oldemann has still seen water at the headwaters of the creek.

Water is still flowing out of the last of the two beaver dams. The beaver burrows are blamed in parts of the population for taking away the water. "I can’t imagine that", according to spiekermann. Although beavers hold water for a short time "for their own use" back, but then the water flows on again. Due to the long drought, however, there is naturally "less inflow" from the springs on the dammersfeld, according to the forest ranger.

Dagmar mubhoff from the water management office in bad kissingen confirmed that the condition of the water in lower franconia is monitored and documented, but not every small water body can be examined. The office has no data on the small sinn in the kothen area. However, the measuring station in bad bruckenau measures and transmits the level of the coarse sinn, into which the small sinn flows, on a daily basis. For two months, the discharge situation there has been rated "very low" called, only on 23. September the water quantity of the sinn was in the green area. Certain streams are known to dry up regularly. "In extreme weather conditions, further sections fall dry", says mubhoff.

If the springs of the sinn continue to gush, even if not as richly as usual, and the beaver dams only stop the water for a short time, where has the water gone?? Several old muhlgraben also take water, but return it to the brook. "Fliegewasser are in exchange with the soil and groundwater", explains mubhoff. So water could have seeped away, depending on the air temperatures also evaporated.

Occasionally, there are depressions in the otherwise dry stream bed in which deep dark, almost black water stands. Ingo queck, from the nature conservation alliance and biology teacher at the franz miltenberger high school, can only make assumptions without having been there himself: "that could indicate that humus has been loosened there". The water could have pooled from the surrounding bedrock into the deeper depression, taking materials from the earth with it. It is also not impossible that decomposition processes in the sink are responsible for the dark coloration.

The extreme conditions of this summer will have an impact on the creatures in the stream. If a stream runs dry, the natural habitat for water oats, insects and amphipods is gone. Their options are to move out of the way or adapt, explains the expert from the water management office. Either the animals find another niche, or they can "survive in the underground for a while". But in the long run they lack the basis for life. "Curiously, there were relatively few fish kills this year", reports mubhoff. When the water slowly recedes, the animals may have found a place to retreat to.

Where did the approximately 100 ash and rhon trout that hans bauer released in may of this year go? He also wonders. At the old sports ground, at the camping site and in the lower village, the owner of the fishing right in kothen had let the young fish into the water so that they would multiply. "I can forget about it now", complains hans bauer. "So I do not find a tenant. Too unprofitable." For two weeks now, the bed of the small sinn stream has been "dry as dust", where his fish have remained, is a riddle to him. For dead fish he did not find at said section.

Maybe they have found a new place to stay downstream. For still above the beaver dam at the pilster rock, a quite productive underground spring feeds the small sinn river. So in kothen itself and in speicherz some water still flows.

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