It's been a rainy week at the Nature Center, but work continues on the stream. Last week I posted a photo of the point bar cobble mock-up. You can see the mock-up in the center-right of this photo. This week the exact location for the cobbles was defined and graded. The cobbles will be about one foot deep, so the slope needs to be lowered by that amount to allow for a smooth transition between the surrounding grade and the cobbles.
The stream grading is almost finished, with just a small area upstream of the south lake remaining. When the muck was dredged out of the stream, the contractor spread it in an unused part of the Nature Center south of Willow Street. The material was turned periodically, enabling it to dry out. The contractor has used that dried out dredge material mixed with clean soil (yes, we tested it) to build up the streambed to the specifications on the plans. The photos below show the big pile of material that was taken out of the streambed in October (left) and what that pile looks like now (right). The woman with the muck in her hand is Jessica Hall from Restoration Design Group.
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