Long Rock

12.9°C Water temp · May 5

United Kingdom Coastal 1 - Excellent 12.9°C

Mounts Bay is on the south coast of Cornwall. There are four designated bathing waters located around the bay - Wherry Town, Penzance, Long Rock and Marazion. All the beaches are sandy resorts backed by sea defences. Heliport beach is approximately one kilometre wide. The Ponsandane Brook flows onto the western end of Heliport beach.

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Water

Coastal bathing water

Location

Cornwall

Season

Designated bathing water since 1988. Official monitoring season runs from May to September.

Water Quality

Excellent (2025). Assessed under rBWD

Risks

There is a storm overflow from the Finns CSO. The overflow discharges to the Ponsandane Brook, 130m from the Environment Agency monitoring point. The operation of the overflow can lead to a temporary drop in bathing water quality in Long Rock.
Within the Long Rock bathing water catchment there are three emergency/storm overflows that discharge into the Trevaylor Stream and four that discharge into the sea east and west of the bathing water.