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1 r <br /> RIO GRANDE BASIN <br /> , Basinwide Conditions Assessment: <br /> The SWSI value of 0.6 indicates that for June the RIO GRANDE BASIN <br /> asin water supplies were slightly below normal. Storage in 5 S fso...t.r Supply Index History <br /> Platoro,Rio Grande,and Santa Maria reservoirs totaled 142% 4 <br /> of normal on June 30. The National Weather Service reports <br /> basin precipitation as 85% of normal during June. Flow at 3 .F <br /> the gaging station Rio Grande near Del Norte averaged 2,760 <br /> cfs, as compared to the 1961-1993 June average of 3,092 cfs. *i 1 - <br /> The Conejos River near Mogote had a mean monthly flow of ° ) ' `A. 4 <br /> 1,354 cfs. d(1-- III:-, r 7 <br /> r F <br /> Weather conditions in the San Luis Valley during June ='' <br /> Cr were warmer than average. The average monthly temperature ° z <br /> of 62.4° in Alamosa was 3.0° above normal. Temperatures 3 <br /> ranged from a high of 95°to a low of 33°. The average daily -4 <br /> JANOS JAN86 JAN67 JAla39 JAN86 JAN90 JAN91 JAN92 JAIR3 JAN94 <br /> high was 82°, while the average daily low was 42°. Alamosa YEAWK:01TH <br /> received 0.15 inches of precipitation during June, which is <br /> 0.52 inches below normal. <br /> Outlook <br /> By the end of the month, most of the snowpack had RIO GRANDE NR. DELNORTE <br /> melted, even at the higher elevations. The mainstem of the 1 1 FLOW WATER "' <br /> . <br /> Rio Grande is displaying signs of the low snow supply and 1 <br /> lack of precipitation. After a good early runoff, flows are a <br /> dropping quickly and should remain below average s <br /> throughout the summer. However, tributaries located in the r„ 07 <br /> Sangre de Cristo and southern San Juan Ranges,which began o 1 as <br /> the season with an above average snowpack, should d v as - <br /> T.xperience near average flows for the remainder of the season. s 04 <br /> I a.3 <br /> Administrative/Management Concerns a 2 - <br /> Local irrigators with upstream storage were drawing 0.1 ` <br /> heavily on their reservoirs as the month came to a close. ° <br /> Oct Noy Dec Jan Feb March April May June July Aug Sept <br /> Many of the upper Rio Grande Basin reservoirs will be pulled AONTN <br /> down to minimum storage levels by the end of the summer. ° "'°" ° DRY(,9"� ❑ AVG x 1994 <br /> As of June 27 at 8 a.m., Elephant Butte Reservoir began <br /> spilling credit water. Credit waters are accumulated in <br /> Elephant Butte Reservoir (located in central New Mexico) <br /> when flows in the Rio Grande at the Colorado/New Mexico REPRESENTATIVE RESERVOIRS <br /> state line exceed the amount required by the Rio Grande 80 RIO GRANDE BASIN <br /> Compact. The State of Colorado is expecting to spill (lose) \ <br /> approximately 9,100 acre-feet of this credit water. y S°- <br /> Public Use Impacts = '°- <br /> The good runoff in the basin made for business as un <br /> usual during most of the month. Irrigators and t,g t. `\ <br /> recreationalists enjoyed the adequate water supplies. As the i 20. \\ <br /> month drew to an end, however, lack of precipitation was / <br /> beginning to affect all water users. ,0 /�\ /////���\\\ r <br /> 7//, N <br /> Nlo Grande Platoro Sent s/hr le <br /> ® Avg. 0130 Contents ® 6l30104 Contents <br /> 5 <br />