1.4.2009 - Part Two
January 6th, 2009Both of my long-time readers know that the overflow pipe coming through the dam at Roundrock has been eroding the base of the dam where it emerges. (That photo above is not the spot I’m talking about.) Libby and I filled the basin with rocks gathered from the area once, and the next overflow event washed them all down stream, gouging a bigger basin in the process. From this I realized that if we were going to fix the erosion problem, we’d need larger rocks. (The long-term plan is to pour a slab here to blunt the force of the rushing water as it emerges.)
It happens that at the extreme other end of our forest, there is a small pile of large rocks. They sit beside the old road still visible through the trees that must have served the area in the ranching days (or maybe even before then). My guess is that they were collected when the road was originally cut through the wilderness. I’ll probably never know, but the pile of rocks seemed ideal for filling that eroded basin below the dam a half mile away.
So the first task on the day’s list was to clear the old road enuf that we could back the Prolechariot down it to stop beside the pile o’rocks. We would then load them all into the bed of the truck and drive them to their new home. Sounds easy enuf.
It turned out that the old road wasn’t nearly as open as I remembered it. Not only was there a lot of deadfall blocking the way, but whole trees growing up in the roadbed would need to be removed to get the TOYOTA down it. While all of this could be done (and while it would provide an additional bit of fire break for when those meadow fires my neighbor periodically has get out of control — it happened once), it would have been an all-day job. And when we looked at the pile o’rocks itself, there actually weren’t enuf there to make the job worth the time at the time. Like so many other projects at Roundrock, if this road clearing job is ever completed it will probably be the result of many small stabs at it rather than one big work day.
And so we abandoned that plan, persuading ourselves that since we were in the Ozarks, we could find plenty of other rocks about the place. We each carried a couple of rocks from the pile to the truck, and then drove down to the acre below the dam to re-assess.
At this point you’re probably looking at all of the rocks in the photo above and wondering why old Pablo would bother trying to haul rocks from the other side of his forest when there are already so many fine ones right beside the problem. Well, here’s why: they’re not fine. They’re too small for the job. Rocks that size would get washed out of the basin and added to the small dam forming below it, further compounding the problem.
We sloshed our way over to the erosion problem to see just how big this project was going to be. (Apparently the rains in the area recently were much bigger than I realized.) Along the way we carried our few collected rocks and tossed them in the water. The basin swallowed them whole, showing no sign of its hunger abated. Looking at the pool of water and guessing the depth of it based on how utterly the large rocks had disappeared, I knew then that even if we had filled the entire truck bed with small boulders, it would have only been about a third of the volume we needed to do the job. So, another ambition of the morning was thwarted.
We wandered about the area, collecting the larger of the rocks we came across and tossing them in the maw, but the immensity of the work (given the tools at hand: our hands) disheartened us. Nearby was the eroded spillway. There are several pools of water that have formed in it as well. The photo above is one of them. I’m not sure what to think about these. I’m pretty sure they are far enuf from the dam structure not to pose a threat to its water-holding ability. Yet if they are allowed to continue to erode, I think they could eventually pose a threat. So Seth and I got busy tossing large rocks into these small basins. (Libby had wandered off.) My hope is that when water comes coursing down the spillway, it will strike the rocks and continue rushing on rather than dig the holes even deeper.
As you can imagine, these problems won’t be fixed with more rocks and hours of back-breaking work. They will be fixed with money. I’ll need to hire someone to haul in a truckload of gravel to fill the holes and then a bulldozer to flatten and shape it all. That would probably be a good time to have a slab poured at the overflow outlet too. While this person is there I’ll have him take down the dead tree that rises by the spillway since if it comes down it will probably make matters even worse.
Everybody needs a hobby, right?
Missouri calendar:
- Epiphany
- Put Christmas trees on ice for fish cover or beside bird feeders for wildlife cover.















