Hey there Mike, Ya you were seeing that right. I was wondering about the liner myself. I've heard some might put a liner inside or up against the dam to help seal it but it looks pretty strange right? Sorry to hear about the damage to your dams. If we were neighbors I'd come over and help you out if I could. For me it took a few beers and a home grilled steak but I've made peace with all the damage out here, plus building the siphon is going to be a fun project for me to work on. I'd be very happy to not be in a hurry because I've got a roof to replace, driveways to repair and a slew of other work. Hope your family, house and animals are OK. Some out here lost some livestock and had major damage to there houses.
