it WILL BE A FEW WEEKS BEFORE I CAN GET BACK DOWN TO TAKE PICS,THE REVINE IS PROBABLY 25FT DEEP WHERE I WANT TO DAM IT UP.THE SIDES ARE AT A PRETTY STEEP ANGLE.WHAT IS BENTONITE AND HOW DOES IT WORK? CAN IT BE SPEAD OUT ON TOP OF THE SOIL BEFORE WE START TO DAM? I WILL TALK WITH THE NRCS FIRST AND SEE WHAT THEY HAVE TO SAY THANKS!!!!