Well here is a problem I did not anticipate .. I focused so much on compaction of the core and the anti-seep collars and the bed for the pipe .. I did not account for bouyancy .. I left approximately four to five feet of double walled 24" culvert pipe extending into the pond with the thought that late next summer I would drain the pond and put in the water control structure .. I capped and sealed the pipe with two 3/4" peices of plywood with a 6" cable valve to drain when I was ready .. all good .. but .. the water is rising fast and end of the pipe is too bouyant .. it started to buckle and the end of the pipe rose with the water level as the water started to crest the pipe .. my cable valve worked great .. I pulled it and the water is ever so slowly going down ..

I couldnt get any pics because of darkness ..

Any suggestions from the experts .. HHHEEELLLLPPPPP

No such thing as a problem .. just opportunities