Chyandour Brook is a small river (brook) in west Cornwall, England. Rising in Boskednan in the civil parish of Madron, Chyandour Brook drains into Mount's Bay in the English Channel at Chyandour, Penzance.[1]
Located entirely in the west of Cornwall, Chyandour Brook rises in the Penwith Moors in Boskednan, civil parish of Madron, and flows a southeasterly course. After flowing past the village of Madron, Chyandour Brook turns east through Heamoor, in the civil parish of Penzance. It then flows through Treneere—a residential council estate—before resuming a southeasterly course into Chyandour, where it drains into Mount's Bay in the English Channel.[1]
Chyandour Brook has overflown on several occasions, with many significant flooding incidents between 2002 and 2014. The Environment Agency, a non-departmental public body sponsored by the United Kingdom's Department for Environment, Food and Rural Affairs, declares most of the surrounding area of Chyandour Brook in Flood zone 3, indicating a "high probability of flooding."[2]