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v* <br />'TA <br />Poor - Requii es a stream channel <br />modification. <br />l 1 <br />LI <br />Best - No channel modification, and the road is perpendicular <br />to the culvert without a curve in the road alignment. <br />a. Culvert alignment options. <br />Q <br />do / <br />r <br /> <br /> <br />b. Culvert installation in a broad channel, <br />q5 <br />Better - Multiple pipes disperse the flow <br />across the channel. Middle pipe may be <br />slightly lower to pass the normal low flow <br />and to promote fish passage, <br /> <br /> <br />• <br />Low-VOLUME Roecs BMRs: 79 <br />Adequate - No channel modifications but <br />requires a curve in the road. <br />Poor - Single pipe concentrates flow in the <br />broad channel or floodplain.