River Hydraulics and Sediment Transport

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Table 5-27.-Mean Annual Flow and the 1.5-Year Flow for All Alternatives, and Percentage Difference Relative to the Present Condition Governance Governance Location Present Committee, Committee, Water Wet Water Condition Scenario 1 Scenario 2 Emphasis Meadow Leasing North Platte River at North Platte, Nebraska Mean annual flow (cubic feet per 700 679 685 679 680 687 second) Percent + or - Present Condition - -3.00 -2.14 -2.58 -2.44 -1.43 1.5-year flow (cubic feet per 2135 2097 3000 3000 3000 3000 second) Percent + or - Present Condition - -1.78 40.5 40.5 40.5 40.5 South Platte River at North Platte, Nebraska Mean annual flow (cubic feet per 537 528 528 572 535 571 second) Percent + or - Present Condition - -1.68 -1.68 6.52 -0.37 6.33 1.5-year flow (cubic feet per 1109 1074 1092 1183 1127 1154 second) Percent + or - Present Condition - -3.16 -1.53 6.67 1.62 4.06 Platte River at Cozad, Nebraska Mean annual flow (cubic feet per second) 746 725 737 773 735 781 Percent + or - Present Condition - -2.82 -1.21 3.62 -1.47 4.69 1.5-year flow (cubic feet per second) 1708 2511 4743 4694 4442 4690 Percent + or - Present Condition - 47.0 178 175 160 175 Platte River at Overton, Nebraska Mean annual flow (cubic feet per second) 1840 1890 1890 1948 1875 1984 Percent + or - Present Condition - 2.72 2.72 5.75 1.79 7.71 1.5-year flow (cubic feet per second) 3761 4689 6420 6626 6378 6291 Percent + or - Present Condition - 24.7 70.7 76.2 69.6 75.3 Platte River at Grand Island, Nebraska Mean annual flow (cubic feet per second) 1820 1880 1874 1928 1854 1964 Percent + or - Present Condition - 3.30 2.97 5.88 1.81 7.85 1.5-year flow (cubic feet per second) 4730 5119 6580 6669 6592 6700 Percent + or - Present Condition - 8.22 39.1 41.0 39.4 41.7 a5 57 ,-, , ,.,,,.,,