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Figure 11-3.10: Typical Grass -Lined Channels <br />Typical V-Shaped Channel Cross -Section <br />With Rnck <br />6"-9„ <br />(150-225mm) <br />Key in Fabric <br />Grass -Lined <br />Filter Fabric <br />Tvoical Parabolic Channel Cross -Section <br />With Rock Center <br />for Base Flow <br />lir/ l\\r <br />6„ - 9„ <br />(150-225mm) <br />i <br />With Channel Key in Fabric Filter Fabric <br />Liner <br />Typical Trapezoidal Channel Cross -Section <br />Overcut channel 2" (50mm) to allow <br />bulking during seedbed preparation <br />and growth of vegetation. <br />DEPARTMENT OF <br />ECOLOGY <br />State of Washington <br />Design Depth <br />i <br />Filter Fabric <br />With Rock Center <br />for Base Flow <br />NOT TO SCALE <br />Typical Grass -Lined Channels <br />Revised June 2016 <br />Please see http.1Avwwecywa.gov/copyrrght.html for copyright notice including permissions, <br />limitation of liability, and disclaimer. <br />2019 Stormwater Management Manual for Western Washington <br />Volume 11 - Chapter 3 - Page 335 <br />