Castro Valley Library's Creek Takes Shape
When Your Boulevardier was but un petit garçon, he sang this song in Sunday School:
O who can make a flower? I know I can't -- can you?However, in recent years man has begun making creeks. Or, more accurately, remaking creeks that, half a century ago, were encased in concrete and buried underneath our roads and lands in misguided attempts at flood control. Such a creek restoration is underway at the site of the new Castro Valley Library on Norbridge Street; Your Boulevardier and the Trusty BoulevarDog had a look this last week.
O who can make a flower? No one but God, it's true.
The creekbed appears to be built up in layers beginning with native soil that is carved and contoured using huge earthmoving equipment. Large boulders are layered in next, one at a time, followed by smaller rocks delivered by frontloader. (Smaller, yes, but still large -- perhaps the size of a human head.) Willow poles, which one assumes are intended to sprout into trees, are inserted deep into the ground along the banks; more soil is added, and then a layer of burlap is applied as the final surface. Your Boulevardier is not a hydrologist, but he assumes that the burlap is meant to hold the soil in place and decompose as plants take root.
Perhaps the most interesting aspect of the project are the attempts being made to play with the flow of the water. The creek curves gently through its site, of course, but along the outside edge of one of the curves three rooty stumps have been buried into the creek's bank, with their snags of roots jutting into the future flow of water. These can be seen in the second photo, below. (Your Boulevardier wonders what these are supposed to accomplish and would welcome a comment from a knowledgeable reader.) Also visible in the second picture is a dam that blocks the current creek flow so the workers can create the rest of the creek.
One other bit of information about this little bit of creek: the project's estimated $500,000 cost is being paid for by Union City, which is providing the funds in exchange for being permitted to enclose 700 feet of a creek near their BART station into a concrete culvert. A thoughtful letter on the project, written by Castro Valley resident Bruce King, can be read here.
Photo taken from Norbridge Avenue
Photo taken from behind Long's Drugstore. Click either picture for a larger view.
