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Table 6. ET calculated for the South Platte System based upon average weather and the
<br />2001 TM imagery. This calculation includes precipitation incident upon mapped
<br />phreatophyte lands added to ETg.
<br /> Vegetation Open Water Combined
<br /> Avg Avg ETa Total Avg
<br />Reach Acres Acre Ft AF/Acre Acres Acre Ft AF/Acre Acres Acre Ft AF/Acre
<br />S.Platte 1 4,679 12,133 2.6 131 491 3.8 4,810 12,625 2.6
<br />S.PIatte2 1,310 2,755 2.1 150 566 3.8 1,460 3,322 2.3
<br />S.Platte 3 2,240 4,826 2.2 122 462 3.8 2,362 5,288 2.2
<br />S.Platte 4 4,391 9,864 2.2 225 851 3.8 4,616 10,715 2.3
<br />S.Platte 5 4,621 9,720 2.1 82 304 3.7 4,703 10,024 2.1
<br />S.Platte 6 2,577 5,446 2.1 96 353 3.7 2,673 5,799 2.2
<br />S.PIatte7 19,350 42,474 2.2 536 1,995 3.7 19,887 44,469 2.2
<br />S.Platte 8 11,496 24,382 2.1 301 1,140 3.8 11,798 25,522 2.2
<br />S.Platte 9 4,383 11,616 2.7 131 505 3.8 4,515 12,121 2.7
<br />S.Platte 10 7,985 21,659 2.7 231 905 3.9 8,216 22,564 2.7
<br />S.Platte 11 11,400 29,040 2.5 454 1,833 4.0 11,853 30,873 2.6
<br />S.Platte 12 21,384 53,550 2.5 756 3,062 4.0 22,141 56,612 2.6
<br />S.Platte 13 5,664 15,840 2.8 262 1,059 4.0 5,926 16,899 2.9
<br />Poudre A 649 1,659 2.6 52 182 3.5 701 1,842 2.6
<br />Poudre B 829 2,039 2.5 18 65 3.5 848 2,104 2.5
<br />Poudre C 2,359 5,212 2.2 15 55 3.6 2,375 5,268 2.2
<br />Trib 1 19,830 49,690 2.5 7 25 3.8 19,836 49,715 2.5
<br />Trib 2 47,813 111,683 2.3 1 5 3.8 47,814 111,689 2.3
<br />Trib 3 15,762 34,820 2.2 9 33 3.8 15,770 34,852 2.2
<br />Trib 4 9,408 20,745 2.2 2 8 3.8 9,410 20,753 2.2
<br />Trib 5 1,112 2,292 2.1 11 40 3.8 1,122 2,332 2.1
<br />Trib6 3,104 5,851 1.9 5 21 3.8 3,109 5,872 1.9
<br />Summary 202,346 477,297 2.4 3,599 13,961 3.9 205,945 491,258 2.4
<br />Table 7. The ETo and precipitation parameters calculated as annual averages for 2001 and
<br />for long term (raster values) for 4 stations on the South Platte System. The raster-file
<br />predicted values were extracted from the region of the weather stations. All values are
<br />inches/year.
<br /> 11-Year 30-Year 2001 2001 Total Raster File - Raster File -
<br />Station Average Average Total precipitation Predicted ETo Predicted
<br /> ETo Precipitation ETo Precipitation
<br />Ft. Collins 41.8 17.5 39.2 12.7 41.8 15.1
<br />Greeley 44.3 10.5 41.9 12.9 44.3 11.8
<br />Ft. Lupton 45.7 9.2 3g.0 11.7 45.7 12.1
<br />Holyoke 48.8 13.5 41.7 18.7 48.8 16.5
<br />Average 45.2 12.7 40.2 14.0 45.2 13.9
<br />19
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