Laserfiche WebLink
4 , <br /> SOUTH PLATTE BASIN August, 1997 <br /> 1 <br /> Basinwide Conditions Assessment: <br /> The SWSI value of 2.5 indicates that for July the basin SOUTH PLATTE RIVER BASIN <br /> vater supplies were above normal. Reservoir storage, the S surf..Water suRvly Inoe><1-0 story <br /> major component in this basin in computing the SWSI value, 4_ <br /> was 109% of normal as of the end of July. Storage in the W 3_ .„ 1 �` .. <br /> Julesburg,North Sterling,and Prewitt, '` : - .._r o __ <br /> major plains reservoirs: - _ <br /> decreased by 87,340 acre-feet during July and are at 70% of 2-` .,; L: ',' M -_:--- <br /> capacity. Storage in the major upper basin reservoirs: Y. 1--^•' .-- r " : _ =: l " ' ` <br /> Cheesman, Eleven Mile, Spinney, and Antero, decreased by g ° ��` "- s • 1�� it <br /> 1,912 acre-feet and are at 93% of capacity. The mean daily _ h t flow of the South Platte River at the Kersey gage was 864 cfs, a ; <br /> 2- <br /> as compared to the long term average of 839 cfs. Flow at the o <br /> Colorado/Kansas stateline averaged 495 cfs, compared to the "3- <br /> long term average of 310. -4 I <br /> JAN88 JAN99 JAN90 JAN91 JAN92 JAN93 JAN94 JAN9S JAN96 JAN97 <br /> Flows in the South Platte and its tributaries were WNW YEAR <br /> above average through out the basin during July. The most <br /> senior call on the South Platte during the month was a 1872 <br /> Bratner Ditch call in District 2 on July 19. In general, the <br /> calls through out the basin were not as senior as normal and <br /> occurred two to three weeks later than normal. SOUTH PLATTE RIVER NP. KERSEY <br /> Significant intense widespread rainstorms toward the 2.8 FLOW BY WATER YEAR <br /> end of the month returned the South Platte to flow levels 2.6 42 <br /> which normally exist only during runoff. These rainstorms 2.4 <br /> 2.2 <br /> completely removed the call on the whole mainstem the last ,I 2 <br /> day of July. It is expected a call will return by the second r 1.9 . <br /> week of August if weather conditions return to seasonal : 1.6 - - <br /> 0_ 1.4 <br /> norms. 1.8 1.2 <br /> S 1 �t <br /> Outlook I <br /> Due to the good natural flow conditions, most of the 0.4 <br /> irrigation and municipal reservoirs were still full at the end of 0.2 ;� _.-—..---. <br /> July. Thus, there should not be any significant water 0 <br /> Oct Nov Doc Jan Feb March 14,11 May June July Aug Sept <br /> shortages along the South Platte or any of its tributaries this ►ONTN <br /> 0 WET L1983) o DRY C19µ) A AVG 9 1697 <br /> year. <br /> • <br /> Public Use Impacts • <br /> One of the intense storms caused dramatic flooding of <br /> a small drainage in Fort Collins,Spring Creek,resulting in the REPRESENTATIVE RESERVOIRS <br /> loss of life and significant property damage. Another heavy 26O �*"PLATTE RIVER BASIN <br /> rainstorm on Pawnee Creek,normally a very small tributary to 240 7 <br /> the South Platte, caused significant property damage in n° <br /> Sterling and the town of Atwood. Heavy rain caused the 180 <br /> Riverside Canal to breach with ensuing flooding in the town M 1 160 <br /> of Weldona. a 140 <br /> Intense rain storms have caused damage to crops in h 2 120 <br /> isolated areas. , 7-7 <br /> 40 A <br /> - /;,',A / ,_/f^\ ;47 I,f7 <br /> Oi l Ion Fbrsetooth Eleven IU la Chem:wan Jackson Barr Lake <br /> ® Avg. 7/S1 Content.. ® 7/3v97 cantonto <br /> 3 <br />