Yewdale Beck at Tilberthwaite is a marvellous stream to play in and build a dam. There are loads of stones and dam-building material in the beck from the redundant quarries above.
After you've finished playing in the stream, you could head down to Coniston for a bite to eat or how about boating on Coniston Water - you can take a look at the other things to do in and around Coniston.
Tweet us your photos of dam-building @NTlakesoutdoors - we'd love to see them!
I'm a Ranger for the South Lakes property, covering Coniston and Little Langdale.