The River Brain is a river in Essex, England that gives its name to the town of Braintree, though in fact Braintree lies on a low ridge between the Brain and the River Blackwater. Above Braintree it is known as Pods Brook. The brook rises near the village of Bardfield Saling. Below Braintree the Brain joins the Blackwater on the outskirts of Witham.
- Map and aerial photo sources for grid reference:
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