Hi all. I was hoping to get some advice on my waterfall construction in my backyard. I'm going the DIY route, but I'm not especially handy and this is on the upper end of projects I can handle. I just enjoy doing things on my own.
Here are some pics of the area I'm building the waterfall, and some work already done:
View of backyard. Waterfall will be at left.
Waterfall location. Starts near the iron fence, spills to the bottom. The bottom and middle are flat, while the top rises about 2 feet over an 11' distance.
There will be no koi or fish, and I'd like to go pondless, hence the small 7' x 3' size. Since this picture I've dug the a hold a little over 2 feet deep.
I'd like to split the top tier into three individual streams.
The top (waterfall source).
I've also created this overhead diagram in Paint of what I'm going for:
I have a buttload of questions at this point... answers or any other advice would most definitely be appreciated.
1. What size pump do I need? It would run about 40 feet, including about 10 feet of total rise (somewhere on the internets I came across this wording: "The general rule on pond pumps is 10 feet of horizontal length reduces water flow as much a 1 foot of height from the pump does."). I'd prefer a medium-to-fast flow.
2. What tube type/diameter do I need to bring the water from the pump to the source?
3. Would there be a problem with splitting the pipe three ways so the water would flow into three separate streams (as seen in the diagram)?
4. How deep does my basin need to be if I use water matrix blocks?
5. Are Water matrix blocks really needed, or would milk crates or plastic pipes be enough?
6. I read some of the horror stories on here of people who didn't reinforce their sides. Would that be necessary in the Texas limestone, for a pondless construction? My gut says no (it's solid rock under the ground here, I had to rent a jackhammer to dig out what I've dug so far) but I wanted to see if anyone's had a problem.