The name Dore probably derives from the Welsh word dŵr, meaning "water". The word was later interpreted by the Norman French as "d'or", meaning "golden", and the river valley, through this misunderstanding, then became known in English as "Golden Valley".[2][3]
As of 2022, there is a legal challenge against the building of an intensive poultry farm livestock unit which would contribute to the pollution to the river and also of the Wye, of which it is a tributary.[7][8]
2011 drought
A two-mile section of the river ran dry in October 2011, this was attributed to unusually low rainfall during the spring and summer of 2011. Abstraction of water was not thought to be a major contributor according to the Environment Agency,[9] the explanation being instead the effect of the local geology combined with low rainfall.