Angarrack is situated in a narrow valley from which the Angarrack River flows before joining the Hayle River at Loggans in a specially constructed culvert which prevents the valley flooding. However, in January 2003 the flooding was severe enough to be reported on the regional television programme Spotlight

Cornwall Council Preliminary Flood Risk Assessment

ANNEX 5 – Chronology of Major Flood Events in Cornwall June 2011 

covering up to 7 November 2010 From http://cdn.environment-agency.gov.uk/flho1211bvmh-e-e.pdf

Christmas Day 1974 saw flooding in Angarrack and Hayle.

Heavy rainfall on New Year’s Eve/Day 2002-2003 resulted in fluvial and surface water flooding, mainly centred on West Cornwall. Affected locations include Fexbury/Bude, Redruth, Lanner and the Portreath Valley, Carnkie, Carn Brea, Illogan and Camborne, Angarrack and Hayle, Relubbus and St Erth, Sennen Cove, Lamorna and Mousehole, Marazion, Praa Sands, Breage and Porthleven, Helston, Gweek, Constantine, Porkellis, Burras and Wendron on the Cober, Budock Water and Falmouth, Tresillian, Goran Haven, St Austell, Par and Luxulyan, Herodsfoot, Pilaton and Lowley Bridge near Launceston. In Helston 20 properties flooded and 8 flooded at Gweek. 7 flooded in Redruth and 10 in Lanner.

The Environment Agency is responsible for the maintenance of the Leat and Flood Relief scheme.  There is no information on the Environment Agency website about the Angarrack Stream at Angarrack, the flood relief scheme and Angarrack is not included in the flood watch prevention system.