Posts Tagged ‘soil conservation’
Triple Fenced
The heat and humidity have broken and it finally feels a little more like September now. We were expecting the transition to involve a lot more rain than showed up yesterday. The line of precipitation slowly moving west is doing so at an angle that is sliding from the southwest to the northeast and for some reason, most of the rain moved around, rather than over our region.
Ironically, now I am wishing we would actually receive a heavy dose of rain, because last Friday we put a lot of energy into shoring up the silt fence at the property line adjacent to our neighbor’s corn field. In fact, we turned it into a bit of a terrace with three-tiered layers of silt fence.
The first two are short sections to slow the flow before it reaches our long fence. Between the top two sections there is the skeleton frame for a berm, in the form of piled dead pine trees. The soil runoff will accumulate around the branches and hold them in place. Eventually, weeds and grasses will grow through the branches and that forms a nice natural barrier that will hold soil in place but allow water to flow.
We have added support to the fabric fence by using old hay bales that we can’t feed to the horses because they have gotten moldy.
If I am able, I hope to trek out there in the middle of heavy rain to observe the action as it happens. At the very least, I now know that we need to check it after every big rainfall and remove excess soil if it accumulates.
I don’t know why I originally assumed the soil fence wouldn’t need regular maintenance, but after the soil conservation consultant pointed it out so very matter-of-factly, digging out accumulation makes total sense to me now.
If our enhancements work to mitigate the mud overflow messing up that area, we will be one step closer to being able to enjoy a good cloudburst when it happens. There still remains a problem in the paddocks, where a terrace or silt fence is not an option.
We plan to do some digging to create a couple of better defined routes directing runoff straight to the drainage swale beyond the wood fence, hoping to reduce the amount of flow traveling to one spot with energy that washes away our precious lime screenings and creates a deep canyon of a rill.
It’s fine if a little flow goes that way, but it is currently a problem because most all of the flow is combining to rush sideways along the fence, instead of straight under it out of the paddock.
The trick in the paddocks is, our solution needs to be horse-proof. Their heavy hooves have a way of disrupting all of the simple spade-width channels I’ve created in the past, causing runoff to flow every which way, and ultimately not where we really want it to go.
The next version we have in mind will be scaled up. Maybe I should triple-size it.
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Periodic Maintenance
That tree in our back yard which leads the way in changing colors is cranking it up to full blaze now that we have arrived within the month of September. This image doesn’t to justice to the view, because our sunlight was muted by the smoke of wild fires in Canada and the western U.S. most of the day yesterday.
I spent time in the morning consulting with a specialist from our county soil conservation office as he surveyed the situation where the neighbor’s tilled corn field is overflowing my silt fence. According to him, we have done all the right things for drainage on our property, adding that compared to other sites he reviews, our problems are not very significant.
My perfectionism sees it otherwise.
He did basically fault the neighbor, of whom I gathered he didn’t hold a high opinion. The best fix to hold the soil would be for the neighbor to plant hay in that field, instead of corn. I don’t have any idea if that is something I might be able to influence, but I will suggest it at the first opportunity.
On my end, I learned that the silt fence does require maintenance to remove material when it starts to fill, because he said it is obviously functioning as intended.
I will do that, but I will also add another short section of silt fence above it and then start building a berm of branches between the two, eventually creating a thicket of wild growing weeds and trees.
Since it is so late in the growing season, such a barrier will take a year to become the filter I envision, but just having the skeleton of tree limbs in place before winter will provide an additional place for the silt to build up and start a foundation for a natural barrier.
Looking at the drainage swale below our paddocks and across the pastures, the advice was to periodically reshape the high spots by digging those out as well. Funny me. I had it in my head that there was a one-time solution where I could shape the swale properly and then never deal with it again.
Why should it be any different from the periodic maintenance required on everything else?
Lawns need to be mowed, septic tanks need pumping, engines need oil changes, rugs need vacuuming, animals need feeding, relationships need tending. There aren’t many things that can be ignored indefinitely.
Land needs management. I guess I won’t argue with that logic.
Though, given that, seems to me that days need more hours.
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Making Peace
It is getting to a point where I think I just need to make peace with the fact that water runoff on our property will carve its own path no matter what feeble attempts I make to direct it.
We received another short-but-robust deluge from the rain gods yesterday afternoon, which generated eroding runoff flow digging ever deeper into all the existing rills and washouts that had already evolved from the last few downpours this summer.
While standing on one of the spots inside the small paddock where our insufficient attempts to establish a direct route to the drainage swale had long ago spectacularly failed, I tried to envision what a successful solution might look like.
I picture a much more assertive effort along the lines of what you would see done to create a drainage ditch along a roadway. If we dig an unmistakable ditch, we could dump the material we scoop out of it to fill the washouts we’d rather not have.
The big challenge with a serious excavation is getting planted grass to sprout and hopefully hold soil in place before rainfall gets a chance to wash it all away. If money were no object, maybe we could line the ditch with enough river rock to form a creek bed.
Aw, heck, why stop there? Let’s just line it with a rubber pond skin first, and then pour on the rock. Wouldn’t that make a sharp-looking dry creek that’s always ready for a flash flood. It’s called Rainscaping.
There are a lot of images out there depicting some incredibly artistic solutions along these lines. Fifty dry creek ideas right here! But there is one thing missing from all photos I saw: weeds.
If we tried any of those solutions, in a very short time, you wouldn’t be able to see the beautiful rocks through the 3-foot tall weeds that would happily take root.
Maybe there’s a happy medium in there somewhere. I’m thinking I need grass to grow to hold soil in place, or rocks. How about grass and rocks?
It would be a hassle to mow, though.
Back to reality. The rocks to cover the distances I need would be an awful strenuous effort to accomplish, in addition to the cost of having them delivered. Grass seed is something I can afford and plant easily myself.
It doesn’t cost anything to dream. I like picturing the possibilities. In the mean time, I am stuck looking at the ongoing and frustrating erosion that has had the better of me for the last five years.
I want to work on making my peace with that.
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Standing Corrected
I stand corrected. My neighbor finally got my message and stopped by yesterday to discuss the soil eroding from his corn field. In my angst over the mess, I had jumped to the conclusion that he had neglected to leave a patch of un-tilled grass waterway.
In fact, he did, and it has a wonderful patch of grass, below which are some weeds taller than his corn. I had not walked far enough up into the field to notice the full scope of what was going on. Had I looked just beside my focus of the current source of sandy top soil, I might have noticed.
I think it was the willow tree that obscured a full view.
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The sad truth is that the heavy flow of downpour runoff has simply migrated to either side of his grass waterway.
There isn’t really anything he can do about it right now, but just the fact he is now acutely aware of the current situation helps my mind. When he cuts at the end of the growing season, he will better be able to see the whole picture of what is happening, allowing him to consider options going forward.
It may simply be that he tries making the grass water way wider. I got the impression that he believed it was just an unlucky timing of heavy rain in the spring, before the planted corn had sprouted, that created this situation, so the fix will rely on a hope we get lucky and it doesn’t rain like that next year.
I am more of a mind that the likelihood of heavy downpours will only increase until the global temperatures somehow reverse the current trend and drop a degree or two.
Either way, the solution appears to involve a wider portion of un-tilled soil, but that won’t take effect immediately. For now, I am facing the challenge of dealing with the filled silt fence and finding a way to stretch its effectiveness through the rest of this summer and fall.
I’m trying to decide where I can put the sandy soil if I dig out the front of my silt fence. I’d like it to go somewhere that doesn’t end up just washing away the next time it rains, and that’s a daunting feat. I love the hilliness of our terrain, but the runoff erosion tends to be a constant result.
I’m back to that challenge of striving to work with the natural order and not against it. I want to figure out a solution that involves allowing water to take the easy path it seeks, but without it causing such extreme erosion. It’s hard to convince water to flow gently when the land is not so flat.
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Relative Something 