Rainwater Catchment

 

According to my weather station, we not only have just gotten two-tenths of an inch of rain from our overnight stormfront, we've had almost an inch in the past week and a total to date of thirty inches for the year, which is considerably more than our annual average of fifteen. Maybe someone's adding in snowmelt equivalent? 

In advance of the storm, I emptied out both of my government-allowed 55 gallon rain barrels because a frost and freeze warning had been issued, and winter ice had pretty much destroyed a previous filled container. Well, there wasn't that much ice to speak of, and the barrels had, during the night, basically been refilled, which is remarkable to me. I mean, two tenths of an inch fills a 55 gallon barrel?

It got me wondering what the actual catchment capability might be of the new place we're building up the hill. Seems a little late to be doing this kind of calculation, but the idea of the house being located where it is was in part based on a fundamental principle of catching and storing water up at the top of the slope. So this is certainly a guess based on a formula, but here's what the roof looks like in the plan:

And all of that translates into roughly 4000 sq. ft. of catchment surface. If the actual annual rainfall is in fact closer to 15" than thirty, that amount alone might produce 35,380 gallons! It won't all be going into barrels - in fact, most of it will run through pipes buried peripherally around the foundation and directed either towards the garden topsoil or a pond. Given that this area is drying out at an accelerating rate, it would be truly remarkable to be able to hydrate at least this small portion of the field and kickstart a small water cycling process.

Wait & Watch

The mountains are a reminder that the main requirement is patience. And then, you also need . . .   patience.  And then, of course, some more . . . patience.

Observation is probably the most basic permaculture principle. It's difficult to know exactly how or where to start if your goal is to use permaculture design to remake, redesign, or regenerate a landscape. Your first impulse -- to do something, anything -- may be a great idea, but it could just as easily lock you into some terrible foundational errors which you will need to spend a lot of time and energy correcting. Course correction itself isn't a bad thing; the companion piece to "observe" is "interact," that is, try out a few ideas as they occur to you and observe the consequences, but on a manageable scale. When in doubt, sit back and wait it out.

And, if you're really observing and paying attention, the ideas will occur to you. Up here on the mesas of the North Fork Valley, the snows will show you how the land reacts to winter; the trees, shrubs, and grasses will slowly reveal their strategy for dealing with a frozen landscape; and the prairie dogs will pop up in January to check out what the world was up to while they were hibernating. The prairie dogs, by the way, have been observing and interacting with the landscape for a long time, and they seem to have it figured out. Wait and watch.

 

Where It Starts

 

Earthworks Workshop with Warren Brush near Pismo Beach in early December of 2017.

This is where it started for me, where vague theory transformed into actual practice. "It" being what I wanted to do with the 10 acre property I'd purchased in Western Colorado. I'd been involved with a permaculture makeover on a small suburban property in Los Angeles, but scaling up my thinking was a new process for me, and one I wasn't quite sure I was ready to tackle in practical terms.

Filmmaker Kellen Keene and his partner had purchased an old farm a few miles inland from the ocean, just south of San Luis Obispo, degraded farmland where there was already a legacy dam for water storage - but it was empty and dry here at the end of the season. And frankly, the dam was just sitting on a slope where, if it was actually put to use, the water would have no place to go. Below it, a relatively flat field intermittently flooded with irrigation or stormwater runoff from a farm next door - but again, it wasn't being put to any productive use. Kellen and his partner lived in a farmhouse slightly upslope, but wanted to downsize into a yurt elsewhere on the property, and they had plans to turn their residence into some sort of permaculture teaching center. I have no idea whether or not those plans were ultimately realized.

Warren and his design team (website here) had already mapped the property and assembled materials and the machinery, but they were also lecturing on the design principles that they'd employed to conjure up a flow of water, in and out of storage and across the property.

 

Warren Brush checking out soil horizons.

During the four days we were on the property, an amazing amount of work was done: the land was surveyed and contours plotted with a self-leveling laser. Trenches were dug and urbanite spillways were constructed, emptying into vetiver grass plantings. A major swale was created to harvest potential rainwater from a nearby roadway and run it across the property to the pond. Most of the slopes on the property were converted in some way to take advantage of whatever rainfall was available.

Broken concrete armors the spillway from a potential pond, slowing the overflow and delivering it into a winding vetiver grass buffer zone.

There's a great deal to be learned from attending one of these workshops, and you are, of course, paying for it both in terms of a registration fee and the labor you're donating to somebody else's project. But there really is no substitute for what you gain both in camaraderie and in inspiration, in seeing a plan develop into a practical application. It's an experience stateside of what Warren and other permaculture designer/developers are doing internationally with the tools and resources at hand.

The trusty old Yeoman's plow. The field was ripped on contour to ensure water infiltration and topsoil development.