The River Ems is a much-sluiced, 6 mi river that is located in the far west of the county of West Sussex, England.The last 1+1/2 mi, of this river, delimits eastern Hampshire, before flowing into the sea at Chichester Harbour. The river was so named, the "Ems", by a chronicler in the Tudor period.

Sources

Over the centuries various cartographers and chroniclers have suggested a variety of sources for the Ems. According to research by David J. Rudkin the River Ems has its source about 1+1/2 mi east of Stoughton.

From source to the sea

The River Ems has a catchment area of over 60 km2, and its upper reaches drain the South Downs.Along the county-limits part, of its west bank, is the old town portion of Emsworth that contains mainly pre-1900-built buildings. The Ems flows south west through Walderton as a broad-catchment winterbourne. It runs past: There is little or no surface water in prolonged dry periods as the downstream springs have lowered the level of the water-table. However, when the underlying aquifers are full, the rain runs off and the stream system starts to function.

Etymology

It is sometimes thought that the town of Emsworth derives its name from that of the River Ems, this is not correct as before the 16th Century the stream was originally called the Bourne. The river was renamed by the 16th century chronicler Raphael Holinshed. Many of the towns and villages that the River Ems runs through or past still have Bourne as a suffix. e.g.:Westbourne. "The Emille cometh first between Racton and Stansted, then down to Emilswort or Emmesworth, and so into the Ocean. Separating Sussex from Hampshire almost from the very head."

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