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<br /> <br />1 <br /> <br /> <br /> <br />1 <br /> <br /> <br />1 <br /> <br /> <br />I? <br /> <br /> <br /> <br /> <br /> <br /> <br />also been taken from the Little Colorado River. There are no research <br />activities in this subunit for razorback sucker. Razorback sucker are <br />recorded when encountered in standard collecting activities, PIT tagged, <br />and then released. In 1996, the Hualapai Tribe released several radio- <br />tagged sub-adults into the Colorado River downstream of Diamond Creek. <br />The fish dispersed in the river and were not found during monitoring <br />efforts. <br />Applicable Recovery Goals and Management Strategies: <br />Recovery Goal. There are no Recovery Goals for this species <br />specific to this subunit. <br />Management Strategies: The LCRMP is emphasizing maintaining <br />and enhancing populations of this species in other subunits. <br />LAKE MEAD SUBUNIT <br />Background Information <br />Location: Mohave County AZ and Clark County NV <br />Geographic Boundary: Separation Canyon to Hoover Dam. <br />Description of Habitats Available: Lake Mead is a large, deep reservoir <br />with several basins, numerous shallow coves and bays and a riverine <br />segment in the lower portion of the Grand Canyon (above Pierce Ferry). <br />The extent of the riverine section is dependent on the water surface <br />elevation of the reservoir (lake levels). At lower lake levels, the reach is <br />riverine, but at higher lake levels the water is ponded and lake-like in the <br />lower Grand Canyon. Yearly fluctuations in lake level can exceed 50 feet. <br />There are three tributaries of note, the Muddy and Virgin rivers (both in <br />the Overton Arm) and Las Vegas Wash (Las Vegas Bay) that provide <br />inflows, shallow water habitats, and small marshes. <br />17 <br />