 Coffinswell sits in the Daccombe or Aller Brook drainage basin.The Aller Brook flows west toward Aller, Newton Abbot, before entering the River Teign which empties into Lyme Bay at Teignmouth.Water collection on the east side of the Daccombe drainage basin or the Watcombe drainage basin flows through Barton and Watcombe into Babbacombe bay at Watcombe beach.