Super Awesome Dam Building in a Woodland Stream

Checking up on a dam I built with my two children a few weeks ago. It still hasn't sealed up properly but the water is higher than a week ago. With a few floods and some more fallen leaves, the dam should seal up nicely and hopefully not wash away. Once it's sealed up, the water should flow around the side over the overflow, thus reducing the chances of damage from water erosion.
Its a fair monster compared to our previous efforts and is a mixture of stone, logs and sand / gravel mix as well as a good helping of heavy soil.
Theres even a tractor tyre somewhere in the dam wall. And a sleeping bag we found dumped has been used in there somewhere too.