I'm planning to dam up a live stream bed here in sandy East Texas that will probably create a 1-2 acre pond. I will be meeting with a guy next week who has a small crew with dozers, backhoes, etc. I'm sure he will have suggestions but I wonder if an automatic siphon design is what you guys would recommend or is a spillway ok? The stream flows a constant 20" wide by 2" deep. I'm glad I found this forum because I know next to nothing about ponds.