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fish passage, that include but are not limited to 1) the desired target fish <br />to pass, 2) the size of the! target fish, 3) the particular design of fish <br />passageway or alternative method that would provide the greatest possibility <br />of passing or moving the target fish, 4) the status of the instream <br />obstruction, whether in place presently or proposed to be built, 5) the cost, <br />and 6) available funding and entity(s) financially responsible. <br />Methods of Passing Fish <br />There are several means by which fish can be passed over, around, or through <br />instream obstructions. For purpose of mentioning, below are the major methods <br />used to negotiate fish by instream barriers. The passive fishways are <br />considered the conventional types; the active the nonconventional. These two <br />major types will be addressed in this report where fish passage is a <br />consideration. <br />A. Passive--fish are required to negotiate the barrier by swimming the <br />fishway of their own volition <br />Examples <br />1. Fish Ladders <br />B. Active--fish are :moved or vertically lifted by some means of <br />mechanical assistance. Therefore, fish are not required to <br />negotiate the barrier of their own volition <br />Examples <br />1. Trapping and Trucking <br />2. Fish Locks <br />3. Fish Elevators; Fish Hoists with Buckets <br />River Reach Prioritization <br />The Implementation Plan provides a river reach prioritization of the Green and <br />Colorado subbasins for sub-adult and adult Colorado squawfish. These river <br />reaches were established because they are considered essentail in maintaining <br />8