PRRIP Draft Environmental Impact Statement

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TABLES Page 4 -72 State - Level, Marketing Year Crop Prices, Average for 1988 -1997 ................ 4 -196 4 -73 Annual Irrigation Deliveries Modeled by Impact Region, 48 -Year Average, 1947 -1994 .................. ............................... 4 -197 4 -74 Basin Minority Populations ............... ............................... 4 -219 4 -75 Basin Poverty and Income ................ ............................... 4 -220 5 -1 Average End -of -Month Elevation (Feet) for Seminoe and Pathfinder Reservoirs.......................... ............................... 5 -9 5 -2 Years With Storage Less Than Low Storage Indicator (Thousand Acre -Feet) ....... 5 -10 5 -3 Average May - August Drawdown (Feet) ..... ............................... 5 -11 5 -4 Years With Spills From Guernsey Reservoir .. ............................... 5 -11 5 -5 Percent Change in Average Seasonal Flows (Cubic Feet Per Second) When Compared to the Present Condition . ............................... 5 -12 5 -6 Months With Flows Less Than 500 Cubic Feet Per Second ...................... 5 -13 5 -7 Amount of Program Water Leasing (Thousand Acre -Feet) ...................... 5 -15 5 -8 Number of Years With Irrigation Delivery Shortages .......................... 5 -16 5 -9 Average Irrigation Deliveries Shortage (Thousand Acre -Feet) ................... 5 -17 5 -10 Number of Times Water Right Administration Was Necessary on the North Platte River Above Pathfinder Reservoir ............................ 5 -18 5 -11 South Platte Reservoir Storage: Average Change in End -of -Month Content Relative to Historic Conditions, 1950 -1994, in Acre -Feet ............. 5 -19 5 -12 Average Gains or Losses to the South Platte River Per Month (Acre -Feet) Due to Tamarack Project Operations .......................... 5 -20 5 -13 Estimated Change in Average Monthly Flows (Cubic Feet Per Second), 1950 -1994, Resulting From Water Leasing Operations ...................... 5 -21 5 -14 South Platte River Flow at Julesburg, Program Water for Environmental Purposes (Thousand Acre -Feet) ............................ 5 -24 5 -15 Lake McConaughy: Average End -of -Month Elevation (Feet) .................... 5 -26 5 -16 Lake McConaughy Years With Storage Less Than 500,000 Acre -Feet ............. 5 -27 5 -17 Lake McConaughy May - August Drawdown (Feet) ........................... 5 -27 5 -18 Lake McConaughy Years With Spills ....... ............................... 5 -28 5 -19 Percent Change in Seasonal Average Monthly Flows (Cubic Feet Per Second) When Compared to the Present Condition ...................... 5 -39 5 -20 Irrigation Deliveries: Average Monthly and Annual Flow Volumes (Thousand Acre -Feet) for the Present Condition ................... 5 -40 5 -21 Irrigation Deliveries: Estimated Water Leasing (Thousand Acre -Feet) ............. 5 -41 5 -22 Shortages for the Western Canal ............ ............................... 5 -42 5 -23 Average Program Water by Basin (Thousand Acre -Feet) ....................... 5 -43 5 -24 Short- Duration High Flows Under Each Alternative ........................... 5 -44 5 -25 Central Platte Program Releases and Achievement of Target Flows ............... 5 -46 5 -26 Channel Restoration Plans ................ ............................... 5 -54 5 -27 Mean Annual Flow and the 1.5 -Year Flow for All Alternatives, and Percentage Difference Relative to the Present Condition ................. 5 -57 ix