River Clyst

[4] The river discharges 1.3 cubic metres (46 cu ft) per second on average, and is tidal from the Exe estuary as far as Newcourt Barton.

[8] A 738-foot (225 m) elevated timber boardwalk was planned across the salt marshes and flood plain with a main bridge spanning 390 feet (120 m) across the river.

On the north side of the Clyst, just west of the Exmouth railway line, is Bowling Green Marsh, a small RSPB reserve with a hide (SX971877).

[11] In 1988, a spill of diesel oil into the estuary threatened the habitat and the birds in the area around the river mouth.

[12] A 1994 survey of fish species in the river determined that it contained bullhead, dace, eel, minnow, stone loach, stickleback, mullet and flounder.