|
Lower South Platte River Study
<br /> Colorado Water Conservation Board
<br /> iDecember 2001
<br /> IAlternative Description Developed Supply(1) Construction Cost Cost of Supply(2)
<br /> 1 Development of a 10,000 acre-foot 7,600 af/yr $13,740,000 $133/af
<br /> I conventional dam and reservoir at site
<br /> west of Julesburg Reservoir and the
<br /> 5,800 acre-foot Ovid ring-dike site.
<br /> Water supplied by gravity from the
<br /> I North Sterling system and Peterson
<br /> system.
<br /> 2 Julesburg Reservoir enlarged by 10,000 10,600 af/yr $21,240,000 $140/af
<br /> I acre-feet in combination with the Ovid
<br /> ring-dike project at 5,800 acre-feet.
<br /> Water supplied by gravity from
<br /> Harmony and Peterson systems.
<br /> I3 Development of a 10,000 acre-foot 10,600 af/yr $14,440,000 $103/af
<br /> conventional dam and reservoir and the
<br /> 5,800 acre-foot Ovid ring-dike site.
<br /> I
<br /> Water supplied by pumping from the
<br /> Harmony system and by gravity from
<br /> the Peterson system.
<br /> I 4 Julesburg Reservoir enlarged by 15,000 7,800 af/yr $22,200,000 $189/af
<br /> acre-feet with gravity supply from the
<br /> Harmony system.
<br /> I 5 Ovid ring-dike at 5,800 acre-feet with 4,600 af/yr $5,300,000 $84/af
<br /> gravity supply from Peterson system.
<br /> I 6 Conventional dam and reservoir located 6,000 af/yr $9,100,000 $116/af
<br /> upstream of Julesburg Reservoir with
<br /> 10,000 acre-feet of storage supplied by
<br /> the Harmony system.
<br /> I t'I Based on storage vs.supply analyses for 1943-97 period.
<br /> (2)Based on construction cost of facilities amortized at 3.5%for 30 years(CWCB loan terms)and all recurring O&M,energy,and conveyance
<br /> charges.
<br /> IOperations for Alternatives 1, 2, and 3 are depicted schematically on Figure ES.3. Water
<br /> developed by the six alternatives is expected to cost between$80 and $200 per acre-foot,
<br /> I which is well beyond the financial ability of Lower Basin agricultural water users. For an
<br /> initial financial illustration, the study team assumed that Lower Basin users would be willing
<br /> to pay$50 per acre-foot for additional water supply. We then calculated how much up-front
<br /> Ifunding would be required from a public or public/private partnership in order to produce
<br /> water at $50 per acre-foot. Results are summarized below for Alternatives 3, 5, and 6:
<br /> IAlternative Construction Cost For$50/AF Watert'1 Annual Supply
<br /> Up-front Funding %of Cost (AF)
<br /> 3 $14,440,000 $10,252,000 (71%) 10,600
<br /> I 5 $5,300,000 $2,915,000 (55%) 4,600
<br /> 6 $9,100,000 $7,098,000 (78%) 6,000
<br /> (11 The$50/af covers local water share of construction cost plus all recurring carriage,O&M,and energy costs.
<br /> IGEI Consultants, Inc. ES-4 01002 Dec 2001 Lower South Platte River Study
<br />
|