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. <br /> RIO GRANDE BASIN November, 1997 <br /> Basinwide Conditions Assessment: <br /> The SWSI value of 3.7 indicates that for October the RIO GRANDE BASIN <br /> asin water supplies were well above normal. Flow at the s S�*aC 5up°'y Index",stay <br /> gaging station Rio Grande near Del Norte averaged 1,238 cfs, 4- <br /> as compared to the long term average of 420 cfs. The Conejos - _ L iii. <br /> River near Mogote had a mean flow of 244 cfs. Storage in 3 - _ . <br /> Platoro,Rio Grande,and Santa Maria reservoirs totaled 187% ::-;I T --- <br /> of normal as of the end of October. 3 1- - <br /> Alamosa received 1.69 inches of precipitation during ° 'F. j �_ t �' iii'-� _4 <br /> September, 0.80 inches above normal. The high temperature _ ^ _ 4 1 <br /> was 77° in Alamosa, the low 6°, and the average 42.5°, 1.0° -r 'n. -. rr <br /> a -2- <br /> below normal. -- <br /> 3 I <br /> Outlook -4 ...................... .. �, ,.�.. .... <br /> JAN88 JAN89 JAN90 JN 1 JAN92 JAN93 JAN99 JAN95 JAN96 JAN97 <br /> Stream flow in the upper Rio Grande basin has been YEAR/fONTN <br /> well above average for six months now. These conditions are <br /> expected to continue well into winter. <br /> Administrative/Manazement Concerns <br /> In an effort to meet Rio Grande Compact delivery R I O GRANDE NEAR DEL NORTE <br /> requirements to New Mexico and Texas, all diversions from 6° FIRST MONTH°F THE HATER YEAR <br /> the Rio Grande were shut off on Monday, October 20. All <br /> water indexed at the gaging station on the Rio Grande near so <br /> Del Norte will be ushered down the system to the state line. • <br /> It has not been determined what our delivery status will be at a <br /> years end. x i <br /> 30 <br /> Much more water flowed down the Rio Grande this j <br /> summer than anyone expected. The June 1, 1997 Natural s V 20 f. ' j <br /> Resources Conservation Service forecast of the April through <br /> September flows for the Rio Grand near Del Norte gage were 10 , j <br /> 640,000 acre-feet,where as the actual flow was 781,400 acre- 7/ 4 4 <br /> ° <br /> feet. OCTOBER 1997 OCT.AEG. C'61-'96) HIGH C1983) LOW C1975) <br /> The Conejos River continues to have normal <br /> administration and it appears the Compact delivery obligation <br /> on this river will be met in 1997. <br /> Public Use Impacts <br /> Shutting off diversions will have a negative impact on Representative Reservoirs <br /> the amount of recharge the basin will receive this fall; 28 Rio Grand. <br /> Basin <br /> however, the order came well after crops had been harvested 26 <br /> and little or no economic impact will be felt this year. <br /> 22 iii1 20 <br /> 18 <br /> vn <br /> s� 16 <br /> 12 <br /> ag 10 : <br /> #" • <br /> 2 A���`l ��\ ///- \� <br /> ° <br /> Rio Grand. P IatOro Santauer la <br /> ® Avg. 10/31 Content. ® 10/31/97 Content* <br /> • <br />