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<br />Section 5
<br />Consumptive Water Needs in the North Platte Basin
<br />
<br />Table 5-8 Current and Range of Potential 2030 Agricultural Demands (AFY)
<br />
<br />Basin
<br />
<br />Irrigated Acres
<br />
<br />Irrigation Water
<br />Requirement (IWR)
<br />
<br />, P uQf!1Jt:
<br />Arkansas
<br />Colorqdo
<br />Dolores/San Juan/San Miguel
<br />IGunnison
<br />North Platte
<br />Rio Grande
<br />South Platte
<br />~~afVVhite/Green
<br />STATE TOTAL
<br />2030 Projections:
<br />Arkansas
<br />Colorado
<br />Dolores/San Juan/San Miguel
<br />Gunnison
<br />North Platte
<br />Rio Grande
<br />South Plqtte
<br />~~afVVhite/Green
<br />STATE TOTAL
<br />
<br />Water Supply
<br />Limited (WSL
<br />
<br />Incidental Losses +
<br />Stock Pond
<br />Evaporation
<br />
<br />Gross Diversions
<br />
<br />405,000 748,000 619,000 69,000
<br />238,000 366,000 319,000 36,000
<br />255,000 370,000 294,000 33,000
<br />I 264,000 I 473,000 I 396,000 I 44,000
<br />116000 96000 96000 11 000
<br />633,000 1,108,000 776,000 87,000
<br />1,027,000 1 }98,000 1,541,000 173,000
<br />118,000 138,000 123,000 14,000
<br />3,056,000 5,097,000 I 4,164,000 I 467,000 I
<br />
<br />333~OOO-38[OOO~616~OOO~707 ~OOO~ 5To~oOO~584,06o 57 ~o-oo--=65~o6o
<br />222,000~230,000 -1--342,000~354,000 -1--298,000~309 ,000 -1---33,000-=- 35,000
<br />252~660~259~O'OO-1---36Koo-0~37fo-o'O-1---292~OOO~296~O'OO-r--33~0-OO-=-3fo'oo
<br />254,000,261,000 455,000,468,000 381,000,392,000 43,000 - 44,000
<br />116000 116000 96000 11000
<br />533,000,573,000 932,000,1.003,000 653,000,703,000 73.000,79,000
<br />801,000,894,000 1 A02,000,1.565,000 1,202,000,1.342,000 135,000,150,000
<br />116,000,158,000 135,000,183,000 120,000,163,000 13,000,18,000
<br />2,726,000-2,932,000 4,366,000-4,769,000 3,552,000-3,885,000 398,000-435,000
<br />
<br />1 }70,000
<br />1 }64,000
<br />953,00~_
<br />1 }05,000
<br />397 000
<br />1 ,660~QQQ....
<br />2,606,QQQ....
<br />642,000
<br />11,497,~
<br />
<br />-,.- -'-~
<br />1 A57,000~1,670,00~_
<br />1,644,000,1 }06,000
<br />948~0-0-0~962~0-0-0-
<br />1,640,000,1,689,000
<br />397 000
<br />1,398,000,1,503,009
<br />2,033,000,2,269.000
<br />627,000'852,000
<br />10,144,000-11,048:000-
<br />
<br />Second, the lack of available physical supply can also be
<br />a factor that contributes to the calculation of water
<br />shortage. For example, a ranch may irrigate hay
<br />meadows from a number of small streams running
<br />through the ranch. These small streams will normally dry
<br />up in late summer, resulting in a lack of available supply
<br />even though the water right may be in priority. Additional
<br />water supplies could be put to beneficial use if water
<br />were available. Shortages as a result of the priority of
<br />water rights and the lack of physical supply could
<br />potentially be reduced if additional storage were
<br />developed to supplement existing supplies.
<br />
<br />A third factor that contributes to water shortage
<br />calculations results from irrigation practices. These
<br />calculated shortages are attributable to farming
<br />operational practices, where farmers choose to cease
<br />irrigation before the end of the growing season. In other
<br />words, the shortages are by choice rather than due to
<br />water availability. For example, irrigation may cease for
<br />the season in late July or early August, even though
<br />water supplies may be available. This is to allow hay to
<br />be cut, dried, and baled. The theoretical need for water
<br />remains, and additional application of water would result
<br />in additional CU. This type of water shortage cannot be
<br />reduced through additional water supplies and has not
<br />been further evaluated.
<br />
<br />For the basins having DSS tools, water districts that
<br />have significant water shortages resulting from the
<br />relative priority of the water rights or lack of physical
<br />
<br />S:\1177\BASIN REPORTS\NORTH PLATTElS5_NORTH PLATTE. DOC
<br />
<br />supply have been identified. A more detailed description
<br />of the methodology for evaluating these shortages can
<br />be found in Appendix F of the SWSI Report Figure 5-10
<br />shows those basins that have been determined to have
<br />significant water shortages as described above. Based
<br />on the prevalence of calls throughout the entire Arkansas
<br />Basin, even during average year streamflow conditions,
<br />widespread agricultural water shortages can be
<br />expected.
<br />
<br />
<br />..
<br />
<br />C3 Noo.DSS Bi1Sll1S wrthMiet!)atooj Vpj"'lPfo;)d A9'"lCUltlJfal WlItcf ~,.
<br />. C,t.es C3 l/hler O,Strw:t WI11"1 A~e Agn(lJIII".al WA'.t;Il ShOrt~)o= 10%
<br />c:3 V,'aler Dlsthd With A...eiage Agncultural Wa':eor Shot1ages '" 10'%
<br />C3 RJ'J1!f B.a51rrS c:3 W.all1l1' Olstnet w~1\ PQ$sitMAgno.JIlUl'al W;:JII~ ~$
<br />
<br />::l "'--_
<br />
<br />Figure 5-10
<br />Summary of Agricultural Water Shortages by Water District
<br />
<br />CONI
<br />
<br />5-11
<br />
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