I may have found the problem. You cant really see it in the picture but where the trickle of water is still coming from, directly on top of the stream is a large rock, about 2 or 3 ft. in diameter. Could this have been the cause? My thought is that the dam could of had this rock there, the dozer is not heavy enough to pack the soil under the rock, so as the week passed, slowly the water took the whole bottom out from the rest of the dam and it just collapsed.
