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Kingston,Mi | I designed and supervised the installation of some broad based slow release basins that had continuous ridges between basins. These were parallel and about 150 feet apart, the farmer needed something to control erosion on a new to him farm. He no-tills and during this time, cut his 30 inch soys on the bias to spread the wear on his head, so he needed the embankment designed to allow him to cross at any angle with a 20 ft. head. The uphill slope is 10 to 1 and the down hill side is 7 to 1 (we could not close the down hill slope in a reasonable distance any flatter than 7 to 1). In the center of the basin where the riser was placed, the embankment was between 3 and 4 ft. higher that the ground at the riser. We built quite a few series of slow release basins across what would have been waterways in earlier years using this drive over design. This design was submitted to our state office for engineering approval as a terrace design as it met the criteria for terraces, our state conservation engineer returned the approved design as a series of slow release basins. What ever they were called, the basic design and spacing stayed the same and have functioned as planned for over 20 years on a field with complex slopes and about 6% grade on a Marlette Sandy Loam.
Edit: this installation has the ridge and basin set running straight and doesn't follow a contour, we can't find uniform contours in Michigan with our glaciated soils all piled willy-nilly.
Edited by BOGTROTTER 4/3/2014 21:38
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To Terrace or not toTerraces that is the question?
