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i <br />1 <br />1 <br />1 <br />1 <br />1 <br />1 <br />1 <br />1 <br />1 <br />1 <br />1 <br />1 <br />1 <br />1 <br />i <br />1 <br />i <br />t <br />• Not fish friendly <br />• May require a structural headworks for flow control <br />Application to Limiting Downstream Passage. The Coanda Screen is probably best used in <br />circumstances where the flow is small and fairly constant. Due to its self cleaning, simple <br />configuration it is also well suited to steeper streams at remote locations. <br />Figure 1-3. Example Coanda Screen <br />SCREEN WIDTH <br />BASED ON <br />THROUGH-SCREEN <br />CAPACITY <br />(SEE BELOWI > ?. <br />o. <br />? . PG <br />?\1< I I i <br />k <br />WATER LEVEL <br />I 1 4%" <br />THROUGH-SCREEN CAPACITY <br />Dimensions <br />Flow (cfs/f1F A B C <br />1.0 40" 341/a" 51/2" <br />1.5 47" 52° 7" <br />SECTION <br />(Source: Aquadyne, Inc., Healdsburg, CA) <br />Control Structure Feasibility Evaluation <br />Miller Ecological Consultants, Inc., February 18, 1997 <br />INTAKE STRUCTURE <br />(BY OTHERS) <br />1-11