Olfe (Werse)

Olfe estuary

The Olfe (water ratio [ GWK ]: 3212 ) is a tributary of the orographic right Werse in North Rhine -Westphalia. With a total length of 7.8 km, it has a gradient of about 35 meters. It rises in the peasantry Hinteler the city Beckum, is piped shortly after its source for about 300 m below a field and reached after 500 m the city limits of Ahlen. The first half of its course it flows through farmland, woodland and the other half to the mouth in town by Ahlen. In this section, it is often accompanied by footpaths, the B 58 follows across the creek a short distance. More than a fifth of its catchment area of 12.8 km ² is built on.

The calcareous subsoil of Beckumer mountains, at the edge of it originates, causes frequent drying up of the upper, dry summers in the entire course. The only inflow in addition to some trenches that dissipate drainage water, is the Harntheisbach in the peasantry Rosendahl.

After heavy rains, the Olfe takes the water from rainwater retention basins of some industrial areas on in their environment. Because of so successful metal load and the supply of phosphorus and other substances from fertilizers to agriculture, the Olfe the water quality class III ( very dirty ) is attributed.