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<br />Table C-1 Native Surface Water Runoff of the South Platte River Basin in Wyoming and Colorado.
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<br /> Surface Water Runoff k-~
<br /> (Acre-feet/Year) 1/ .~
<br /> 1970 Wat..er Year 1953-56 DrouQht Peri od Average
<br /> Drainage Area Long Term Annual % of Long Term % of Long Term
<br />Sub-basi n (Square Mil es) Average Flow Average Annual Flow AveraQe
<br />~outh Platte River Mountains 2,142 201,211 402,235 199.9 105,354 52.4
<br />North Fork South Platte River 479 112,604 198,680 176.4 64,286 57.1
<br />Pl um Creek 302 22,789 31,440 138.0 7,142 31.3
<br />herry Creek 385 11,075 6,119 55.3 4,606 41.6
<br />ear Creek 214 44,927 76,244 169.7 4,411 9.8
<br />1 ear Creek 448 173,994 225,362 129.5 114,784 66.0
<br />oul der Creek 439 122,832 162,914 132.6 83,824 68.2
<br />aint Vrain Creek 537 117,600 131,549 111.9 74,820 63.6
<br />ig Thompson River 828 147,600 177 ,006 119.9 93,903 63.6
<br />ache La Poudre River 1,877 234,833 321,220 136.8 158,066 67.3
<br />outh Platte River Transition 1,447 12,341 9,074 73.5 5,133 41.6
<br />row Creek 1,824 60,000 60,000 100.0 36,540 60.9
<br />North Plains Tributaries 2,400 1,090 1,090 100.0 664 60.9
<br />Lodge Pole Creek 1,946 43,023 43,023 100.0 26,201 60.9
<br />outh Plains Tributaries 4,276 50,000 50,000 100.0 30,450 60.9
<br />South Platte River-Plains 1,956 0 0 0
<br />asin Total 21,500 2/ 1,355,919 1,895,956 139.8 825,590 60.9
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<br />1/ Appendix A. The figures above do not include "return flows" from municipalities and industries; groundwater which
<br />Tnfiltrates to these streams sustaining flows in their plains reaches is not included either. This phenomena is the result of
<br />the basins history of irrigation. Return flows from agriculture are the residual of applied irrigation water which seep throug
<br />the ground, accrue back to the streams, and allows for their use once again. Because of this, total surface water diversions
<br />may be much greater than total surface water runoff, however, total consumptive use is never greater (discounting imports and
<br />ground water use).
<br />2/ The drainage area of the entire South Platte River Basin is 24,300 square miles, (USGS, 1970). However, the 2,800 square
<br />miles in Nebraska are not included in the stUdy area.
<br />Source: Water and Related Land Resource Management Study, Vol. 2, Technical Appendix by U.S. Army Corps of Engineer
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