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e <br /> RIO GRANDE BASIN <br /> Basinwide Conditions Assessment: <br /> The SWSI value of-1.9 indicates that for August the RIO GRANDE BASIN <br /> basin water supplies were below normal. Storage in Platoro, s Sur"«Water Supply Index"1'tary <br /> Rio Grande, and Santa Maria reservoirs totaled 137% of <br /> normal on August 31. Flow at the gaging station Rio Grande <br /> u 9 �,f t .L <br /> near Del Norte averaged 278 cfs, as compared to the 1961- _ <br /> 1993 August average of 702 cfs. The Conejos River near r <br /> Mogote had a mean flow of 196 cfs. The National Weather j �'`' ll ' ' , <br /> Service reports basin precipitation as 97% of normal during _i 0 - l iii�:-. I"-' <br /> the month. <br /> For the second consecutive month,stream flow in the a -2 r J_ <br /> basin was well below the historic average. Weather <br /> conditions in the San Luis Valley during August were slightly `3 <br /> warmer than average. The average Monthly temperature of -{ <br /> JANBS JANBG JAN97 JAMB JAN199 JAN00 JAN91 JAN92 JA1193 JAN69 <br /> 63.5° in Alamosa was 1.1° above normal. Temperatures YEAR/WNTH <br /> ranged from a high of 87°to a low of 40°. The average daily <br /> high was 80°while the average daily low was 47°. Alamosa <br /> received 1.22 inches of precipitation this month which is 0.10 <br /> inches above normal. <br /> RIO GRANDE NR. DELNORTE <br /> Outlook ROW 97 WATER YEAR <br /> Some of the long awaited precipitation finally came to • <br /> the basin. However, most of the moisture was drawn quickly 0.9 <br /> into the soil. Thus, rainfall did little to increase stream flow. i 0.B <br /> Without continued significant amounts of rain, area streams 4 0,7 <br /> ., <br /> and reservoirs will remain below historic levels. o E 0,B f' <br /> J- <br /> LL 0 5 <br /> 18 <br /> Administrative/Management Concerns ; 04 <br /> Again during August, only the most senior water 0.3 - <br /> rights were served in the valley. Irrigators should expect this 0.2 <br /> situation to continue as area creeks and rivers drop to near 0. <br /> record low levels. Not since the very dry rear of 1977 has the <br /> Oct Nov Dec Jan Fee Sir ch Apr II 99y June July Aug Saoc <br /> situation been this drastic. Also, repeating the trend started 0 C1097, o C,977)'°."' a AYG x 19,4 <br /> in July, the amount of water leaving the state in the Rio <br /> Grande was less than one-fourth the historic monthly average. <br /> Public Use Impacts <br /> As the summer continues, lack of available stream REPRESENTATIVE RESERVOIRS <br /> flow continues to hamper irrigators and recreationers alike. 45 GRANDE ANDE BASIN <br /> Severe storms also loom as a possible enemy to good harvests. 40- <br /> I <br /> i 30- <br /> 1. n- <br /> I2 i 20- r//IS / <br /> ., 15- <br /> 3 <br /> 10- <br /> S� ` j <br /> O <br /> Rio Grande Platoo SantaWar la <br /> ® Avg a/31 Contents ® y 3 V a4 contents <br /> 5 <br />