Thanks...
You just made this actually cheap and easy!
I was thinking wood but had second thoughts. LOL
What do you think if I used rough sawn 2" planks for the floor. with a heavy foundation of 4x4's on the blocks. For the sides I could use 1" planks with supports every 2 feet. Cover it with the membrane.. Do you think it will work?
Sounds like a plan. You may not have to engineer it as sturdy as you think.
I was thinking of putting it off to the side of the main spring flow so I wouldn't have to worry about a "flood" event.
Good idea.
I would put the pipe into the spring it's self so if the pipe is full it's all she gets. I was thinking a 3" pipe. The one in the picture is 6" drain tile. I don't want that kind of flow into it.
I would go much larger than 3 inch, probably the 6 inch. You could always put in a homemade designed gate value to divert any excess flow. My 4 inch pipe with 45 gpm is full. Gravity flow water takes up more space than pressure flow. I would always go bigger than needed to play it safe.
I figured the "flow" at half of what it is. The slowest flows are in winter when the ground is frozen. Summer is pretty steady at the 20GPM.. I was thinking 10 GPM for the safe side. With a tank the size I describe would 100 trout be out of the question? I know it has to do with the flow.. But they need some room right?
Sure looks like a lot more than 20 or 40 gpm. Are you sure?I would try and capture as much flow as possible. More flow is always better than not enough.