We do 3 different things wrt pond areas that could be scraped. If sandy like DD1 said we leave it alone as that is left for the track hoe later. If rich dirt like DIED said we use it in holes or along roads and when it rains we put out rye grass seed on top of it. If rich and we decide to leave it in the pond until the next time then as soon as the water is off of it I put out rye grass seed directly on top of the wet muck. The rich muck whether on the road edges or left in the pond will grow rye grass very well and quickly (18in. in a mth.).