Hessel
 | |
| Confluence of the Neuer Hessel and the Alter Hessel near the nature reserve of Versmolder Bruch | |
| Location | North Rhine-Westphalia, Germany |
|---|---|
| Reference no. | DE: 316 |
| Length | 39.337 km [1] |
| Source | Northwest of Halle (Westf.) in the Teutoburg Forest 52°05′30″N 8°21′02″E / 52.09167°N 8.35056°ECoordinates: 52°05′30″N 8°21′02″E / 52.09167°N 8.35056°E |
| Source height | ca. 170 m above sea level (NN) |
| Mouth | Warendorf-Einen 51°58′26″N 7°54′59″E / 51.97389°N 7.91639°E |
| Mouth height | ca. 48 m above sea level (NN) |
| Descent | ca. 122 m |
| Basin | Ems |
| Progression | Ems → North Sea |
| Catchment | 212.528 km² [1] |
| Discharge at Milte (4,3 km oberhalb der Mündung, Einzugsgebiet: 204,87 km²) gauge[2] |
Record low: 0 l/s (in 2005) Average low: 304 l/s Average mid: 2.12 m³/s Average high: 18.4 m³/s Record high: 33.6 m³/s (in 1986) |
| Right tributaries | Casumer Bach, Bruchbach, Aabach, Poggenfahrtgraben, Sandfortbach, Teichwiese, Wöstenbach, Beckstroth, Arenbecke, Speckengraben |
| Left tributaries | Alte Hessel, Lüffe Graben, |
The Hessel is a 40-kilometre-long (25 mi), right tributary of the River Ems in the territory of the North Rhine-Westphalian districts of Gütersloh and Warendorf in northwest Germany.
The river rises northwest of Halle (Westf.) on the Große Egge, crosses the Hermannsweg, flows through the villages of Hesseln and Hörste in Halle borough, then through the borough of Versmold through Oesterweg, continuing through the town of Sassenberg and along the southern edge of Milte in the borough of Warendorf, before emptying into the Ems near Warendorf-Einen.
Tributaries include the Casumer Bach, Bruchbach, Aabach, Poggenfahrtgraben, Sandfortbach, Teichwiese, Wöstenbach, Beckstroth, Arenbecke and the Speckengraben.
The Snake's Head Meadows lie along the Hessel near Sassenberg, one of the few areas in Germany in which this strictly protected wildflower occurs.