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What accretive/depletive patterns are anticipated under the above scenarios?
<br />According to Colorado's Illustrative Tool, the following pattern of net accretions and
<br />depletions is anticipated at Julesburg in the "average hydrologic year" under Scenario 1:
<br />Scenario 1
<br /> (Acre--Feet Per Month)
<br />Seasonal Accretions/Depletions ian feb mar apr may jun jul aug sep oct nov dec total
<br />"New"Transbasinlmports 4978 4679 4122 3415 2218 1816 1526 1881 1573 2022 4264 4452 36,946
<br />Nontributary Groundwater 1455 1448 1458 1945 1691 1067 967 975 774 1114 1814 1812 16,519
<br />In-basin Agricultural Conversion 78 78 74 171 361 222 176 176 176 84 68 78 1,740
<br />Conservation 0 0 0 0 0 0 0 0 0 0 0 0 0
<br />Water Reuse (48) (48) (100) (571) (1926) (851) (1672) (1505) (627) (344) (43) (48) (7,784)
<br />Native South Platte Flow Development 3187 2569 2500 (195) (7795) (6318) (315) 760 907 1095 2678 3035 2,108
<br />Total Accretions/Depletions 9,649 8,725 8,054 4,765 (5,451) (4,063) 681 2,285 2,802 3,971 8,782 9,329 49,530
<br />Net accretions a/ter depletions offse!* 8,094 7,319 6,756 3,997 0 0 571 1,917 2,351 3,331 7,367 7,826 49,530
<br />According to Colorado's Illustrative Tool, the following pattern of net accretions and
<br />depletions is anticipated at Julesburg in the "average hydrologic year" under Scenario 2:
<br />Scenario 2
<br /> (Acre--Feet Per Month)
<br />Seasonal Accretions/Depletions jan feb mar apr may jun jul aug sep oct nov dec total
<br />"New"Transbasinlmports 3067 2883 2540 2105 1367 1119 940 1159 969 1246 2627 2743 22,766
<br />Nontributary Groundwater 1455 1448 1458 1945 1691 1067 967 975 774 1114 1814 1812 16,519
<br />In-basin Agriculturai Conversion 78 78 74 171 361 222 176 176 176 84 68 78 1,740
<br />Conservation 0 0 0 0 0 0 0 0 0 0 0 0 0
<br />Water Reuse (63) (63) (130) (742) (2500) (1105) (2172) (1955) (815) (446) (56) (63) (10,108)
<br />Native South Platte Flow Development 4972 4007 3900 (304) (12160) (9856) (491) 1185 1414 1709 4178 4735 3,289
<br />Total Accretions/Depletions 9,509 8,353 7,842 3,174 (11,242) (8,552) (580) 1,539 2,519 3,706 8,632 9,306 34,206
<br />Net accreGons aRer depletions oflset* 5,959 5,235 4,915 1,989 0 0 0 965 1,579 2,323 5,410 5,832 34,206
<br />* These values were estimated by FWS, not the Illustrative Tool. An equal percentage was taken from
<br />each month of accretions (16.1% or 373%) to offset the corresponding May-June or May-June-July
<br />depletions.
<br />OpStudy Analysis
<br />According to Colorado's Future Depletion Plan, average flows in the South Platte River at
<br />Julesburg (over the long-term) will be maintained at 1997 "Present Condition" levels. The
<br />following figure shows a hypothetical "present-conditions" monthly streamflow pattern at
<br />Julesburg from one year to the next for one particular month of the year (say, January).
<br />3
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