Black Hawk Creek flooded over Fletcher Avenue as seen on Saturday |
So much for that thought!
We have been flooded out pretty much ever since I posted that on September 25th. I had to get something other than gravel travel in, so I saddled up the Ti Mukluk and went to investigate the scene in the Green Belt. Another thing I had been hoping to do was to get the Fall Color ride in, and I always do that in the Green Belt. It is a tradition of mine, for better or worse.
Well, I knew the water would be over the Black Hawk Creek's banks, but you never know where you can ride unless you go check it out. I thought maybe I could scoot around that lake out there, since it wasn't part of the creek itself, so there could be a chance I could ride something there. Off I went and I saw the flooding over Fletcher Avenue. This is where the Green Belt crosses through town on its way to the Cedar River. There are flood gates which can be closed along dikes that run parallel to the creek on either side. The one on the North side was closed, but the Southern one was not, it was only blockaded with barriers. Easy to ride around on you bicycle. So, I took a closer look.
The weird thing about that image is that I am standing on the bridge over the creek, and looking North, so the road actually dips there and when the creek floods, it is the first portion to get flooded.
High and dry riding up on the dike. The flooding can be seen on the right here. |
A splash of Fall color at the lake where a few Canadian Geese were taking in the scene. |
More Fall color with these sumac bushes all aflame. |
Well.......that's as far as I was going to get! |
The trail runs off that dike then and turns Westward and toward Black Hawk Creek. This is where I ran into a dead end as the flood waters had covered the trail and a dense network of low Cedars was on my right preventing any easy workaround. Further in to the right, just beyond the Cedars is a run which was very flooded, and then beyond that the big flood dike I rode over on. So, no bushwhacking! I was relegated to turning around and heading out the way that I came in.
This was the other way around. No good. |
And it snowed Sunday!
Hi GT, regarding the road being lower away from the bridge: many roads are designed that way, with a sag or dip on one or both sides of larger bridges or culverts.
ReplyDeleteThe sags act as a sort of emergency spillway during flooding, keeping the culvert or bridge area drier and away from damaging flood currents and saturation. The thought is that it is easier, faster, and cheaper, to replace some road surfacing and shoulder fill than it is to repair bridges or replace culverts. You notice it more in the country where the landscape is open and where allowing the flooding of adjacent land is possible. In towns, there are usually homes and such so we try to confine floods to the channels and bridges only. Good observation on your part to notice!
@Todd Tillinger- Thank you for that detailed explanation of how roads are designed around streams and creeks. I had noted this in the country as well, when riding gravel.
ReplyDeleteIt makes a lot of sense when you understand the reasons why, as you pointed out so well.
@Todd I am an engineer and I love hearing the rationale behind things. So many people like to look at things and pronounce the designer dumb for doing it that way, when they have no idea the reason why. They like to look at the downside of doing it that way, but never question the why not for the alternates. A little bit of knowledge goes a long way in explain to them the reason. Thanks!
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