Wikipedia
Erpe is a sub-municipality of Erpe-Mere in Flanders. It is located on the Molenbeek-Ter Erpenbeek in the Denderstreek in the southeast of East Flanders and belongs to Arrondissement of Aalst. The sub-municipality is bordered by the sub-municipalities of Mere, Ottergem and Erondegem and the municipalities Lede (sub-municipalities Impe and Lede) and Aalst (sub-municipalities Aalst and Nieuwerkerken). Erpe has 4903 inhabitants as of 1 January 2003 and an area of 8.28 km. The population density is 592 inhabitants / km ².
The Erpe is a tributary of Spree River in Brandenburg and Berlin, Germany. The upper third is also known als Langes Elsenfließ ("Long Lizzy-Flow"), the lower two thirds for about half a century were noted as Neuenhagener Mühlenfließ. Previously they had been one of several Mühlenfließe ("Mill Flow"s) without a specification. The course itself is quite natural, but it suffers pollution from a purification plant.