Large Scale Central

Rain Runoff

When we started building the Bluestone Southern railroad in the backyard, we never imagined all the water that would run down some of the waterways after a rainstorm…

In order to raise the railroad up to some sort of ““level””, we built retaining walls to hold back the dirt & clay… (More clay than dirt)…

After a few years, we realized that we had not anticpiated the water flow, which, during some storms, would back up across the yard, and look like a lake going back into the neighbors Horse grazzing area… All this water was backing up, waiting to run down between 2 retaining walls, that were about 16 feet apart…

The area we had the most trouble with, was under the “Y” bridge on the west end of the layout…

As seen in the picture below, if you look down, you can see where the water flow has eaten away the dirt… we used to fill the area back in, and the next heavy rain, would wash it all back out again…

When the August Operation session was complete, the last thing we did was to remove the 28 foot Hilltop Bridge, and the “Y” bridge one the west end, so I could get the tractor into the area, and create a ““Spillway””, to allow the water to drop and flow…

After a few weeks of work, we are at the stage where we can hopefully, finish up the Spillway, before the next heavy rain…

Currently, the Spillway looks like this:

Still have more work to do on it, but, most of the heavy work is done…

Behind the walls, is a 4 inch drain pipe, surrounded by crushed rock, and covered with landscaping paper… Lanscaping caps will be adhered to the top of the wall, then dirt will be back-filled…

Of course, once that’s done, then a new design has to done for the “Y” bridge…

Nice…:slight_smile:

Nick

Holy crap! That’s some serious excavation work. Hopefully that’ll solve the problem.

Jane did that with a shovel, right?

Steve Featherkile said:

Jane did that with a shovel, right?

Steve, of course… Can’t waste diesel fuel moving dirt… :slight_smile:

Ken, I hope it does, too… Had to do something to protect the retaining walls already there…

Dang, Andy that’s some serious changes since we were there. Looking good. Dan

Now I know why the caboose is taking so long to finish. LOL Hopefully you guys won’t float away like the people in Colorado with all the rain their getting.

Bloody hell! Who said this hobby was about MINIATURE engineering? That’s truly impressive; and it will be interesting to see if the outcome is as anticipated, let’s hope so. In this part of the world we get infrequent rain, but heavy when it does, we all have outsized storm water management systems for just that reason. It costs a bit more at the installation phase, but it is always worth it in the end.

Steve

Wow, you could almost fit my whole layout in that spillway! That is some serious engineering!

Ouch! My back hurts just looking at all those blocks, I recently moved about a dozen like that in our yard…they ain’t light weight by any standard of measure. Curious that they are hollow (ours are solid) did you drop steel rebar into the verticals before graveling them full?

Vic, I put rebar into the blocks at the end… Don’t think I’ll need it on the side walls, as when it rains, the prerssure on the side walls will be outward, not inward…

These blocks have 2 hollw points in them… the bottom 2 or 3 course are filled with ““aglime”” or “crucher fines”… the top layers are filled with 3/4 inch rock… The entire wall will be capped with 3 inch cap blocks, glued into place…

The two walls of small blocks on each side of the spillway have been there since 2005-2006…

That is nothing what I thought you were describing. Quite impressive!

Andy liked playing with his blocks as a child :wink:

That’s is really cool. Cant wait to see some water flowing through it. You should throw some boulders in their. That will look great. Then you can turn it into a white water rafting ride. Of course now that you did all that work it will never rain.

Shawn, most rain we’ve had in 2 & 1/2 months is about 142 drops, each rain day… And that’s been like 4 times, maybe…

So now you’re ready for Colorado weather?

Hi Andy -

Looks great! You may already have done this, but since there is no view that shows it I’ll share some experience with you…

If the end wall of that channel is planned to be a waterfall during heavy runoff periods, you will probably want a row or two of cap stones on the ground in front of it to keep the falling water from scouring out the wall. I tried gravel against a wall that gets over-flow in heavy rain and it all disappeared. I replaced the gravel with paving stones and so far it has held up well.

Jon, thanks…

The floor of the spillway will have football sized or bigger rocks lining the spillway floor all thru that waterway, untill after it passes the retaining walls… After the larger rocks habve been made the base, then I have some smaller rocks that will fill in the cracks between the bigger rocks…

The whole purpose of the spillway is to discourage the “'scouring out”" of the dirt base as was being done in the first picture posted…

We got the wall caps placed on the wall Saturday, and have started backfilling the dirt behind the wall… The area if far from being complete, but we’re getting there…

I think your ready for some real bridges Dad!

(http://i45.photobucket.com/albums/f72/Shortybear/ECLSTS/GirlscoutSothernRooster.jpg)

I;m old… I can’t handle real bridges…