Yesterday’s Monthly Trail Workday

ThistleWorkday

Priscilla, Tom, Roy, Elizabeth, and Kurt. Jamie took the picture.

Yesterday a crew of six stewards, including me, headed out to clear the upper Sonoma Overlook Trail meadow of invasive Italian thistle. We made one complete sweep of the upper meadow and emerged with ten contractor debris bags full of the nasty weed, as well as some remaining invasive Yellow starthistle, which unfortunately was a surprise.

Elizabeth Garsonnin, Priscilla Miles, Jamie Nelson, Tom Sours, and Kurt Teuber came out to help with this important battle. If we hit Italian thistle hard now on the upper meadow, before it completely drops its seed, we have a chance of eventually eradicating it instead of allowing it take over completely.

Although we’ve been largely successful in pushing it away from the trail, we are still challenged in large areas where Italian thistle is gaining the upper hand. On the Montini Preserve, my focus has been simply to get it off the trail, as that is the only reasonable goal for that property at the moment. But on the Sonoma Overlook Trail property, we have an opportunity to eradicate it further back from the trail. Eventually, some years from now, my goal will to be to not even see it from the trail, but that is clearly some years out still, and may never be achieved on the Montini Preserve, where it’s fairly rampant.

An Update on the War

ThistlePirates2Today I went out to assess the invasive Yellow starthistle infestation this year. I’m happy to say that it’s less than last year, but it’s still there. We may still be several years away from complete eradication.

But the really depressing thing to see is that Italian thistle is simply taking its place.

This has me thinking that my strategy needs to be this:

  • Eradicate Yellow starthistle (essentially steady the course on what I’ve already been working on).
  • Control Italian thistle in specific areas (trailside and on the Upper Meadow of the Sonoma Overlook Trail).
  • Clone myself. I’ve already signed up Dan Noreen to join “Thistle Pirates” (see graphic) and I hope to sign up others as well. If you wish to join, let me know. You get a free t-shirt, but be careful, as it can come with an obsession.

If you wish to join us, let me know! People along the trail are very appreciative of this work.

Making Room to Stand in Front of the Display at the Top of the Trail

IMG-2691Recently I noticed that there was very little room to stand in front of our display at the top of the trail (see picture). Frankly, I couldn’t believe why that spot was chosen, when moving it several feet to the left would have been better by far. But whatever, it’s what we now need to deal with.

That’s when I decided that I needed to reduce the rock in front of it so people could comfortably stand in front of it and read the text as well as compare the picture to what they could view from that point. So I brought up our cordless rock chisel and got all medieval on the rocks in front of the display. The result is now what you see here (see picture). Although at first it was easy going, as the rock split along clear lines of weakness, it soon got harder, and I was literally chipping away at some very hard rock.

IMG-2693I finally gave up sooner than I would have otherwise, leaving a ridge of rock jutting up from the trail, since at the time I had no other choice. Perhaps later I can reduce it more, and create a smooth surface, but one battery’s worth of power is about all I can take on my wrist.

Porter Abodeely and Sunrise Rotary Work Day Successful

Presentation School student Porter Abodeely, with the assistance of his father JJ, arranged and performed a trail workday with the help of Sunrise Rotary this past Saturday. Sonoma Overlook Trail steward Fred Allebach coordinated with Porter and JJ to guide the workers to the best jobs for the students and for the trail.

There were two crews, one focused on the kiosk area and the other on the upper trail. The kiosk crew performed these tasks: cleaned the trail entry, swept the kiosk area, moved rock thanking the Kiwanis Club for their trail donation back into place, removed trash, swept and weeded the entry staircase steps, cleaned the entry path drain, cleaned the drain above the staircase, swept the stone walls, lightly sanded picnic table top, and cleaned leaves out of table cracks.

The upper moved extra rocks from the new steps to a pile at the Toyon Trail junction, filled eroded areas in the new treads, raked gravel back out to the center of the trail and swept the steps.
The pictures are kindly provided by JJ and are published here with his permission. We extend our appreciation to Porter and JJ Abodeely, Sunrise Rotary, and Fred Allebach for making this happen!

Controlling Water on the Trails

The Trail Maintenance Team for the Sonoma Overlook Trail does a variety of tasks, but one of the most important things we do is manage the flow of water across the trails. Essentially, what we try to do is to move the water off the trail as soon as it comes on. The best way that this happens is in sheet flow from the upper side of the trail to the lower side, but that is rarely the situation we can accomplish.

One challenge is that water often comes onto the trail not in a gentle sheeting flow, but in what is essentially a tiny creek. Another is that it isn’t always an option to have the water sheet off the downhill side. We often need to allow it to flow down part of the trail before directing it off in a waterbar (a channel we cut in the trail to force the water off the trail).

There are also other structures we build to manage water. Perhaps chief among them is the armored swale. An armored swale is essentially a deep channel you cut in the trail that you “armor” with rocks so it doesn’t erode as the water flows over it and off the trail. Another strategy we use to encourage sheet flow off the trail is cut the “berm” or the very edge of the trail that can build up in a way that keeps water on the trail instead of allowing it to sheet flow off of it.

All of these structures require ongoing maintenance, and the more subtle structures require more maintenance than the more dramatic ones.

Over the last few days (one of them during the recent rainstorm) I was out renewing the structures in place and cutting berm to better enable water flow off the trail. I also deepened a few waterbars and performed other tasks to better channel water from the trail.  I will again be out there tomorrow afternoon during the rainstorm with a shovel, to see what needs fixing. It’s part of what we stewards do.