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g <br /> RIO GRANDE BASIN November, 1998 <br /> Basinwide Conditions Assessment: . <br /> The SWSI value of 1.2 indicates that for October the R I O GRANDE BASIN <br /> basin water supplies were above normal. Flow at the gaging $ $,r,... SupP'Y'"°'°`History <br /> station Rio Grande near Del Norte averaged 486 cfs, as 4_ <br /> compared to the long term average of 420 cfs. The Conejos 9- l <br /> River near Mogote had a mean flow of 108 cfs (93% of <br /> normal). Storage in Platoro, Rio Grande, and Santa Maria . - <br /> , i.: r-i . <br /> reservoirs totaled 93% of normal as of the end of October. w 1- � <br /> Precipitation in Alamosa was 1.66 inches,0.96 inches I 0 f .t ti �,._' <br /> above normal. Temperatures ranged from 10° to 73° in _ ✓, <br /> Alamosa where the average monthly temperature was 42.8°, <br /> 0.7°below normal. f <br /> Soil moisture conditions in the basin are now -$- v <br /> generally very good. -4 ,....._.-.( 1 <br /> JAN99 JAN00 JAN91 JAN92 JAN33 JAN91 JAN95 JAM JAS17 JAMB <br /> Y51R/WMH <br /> Outlook <br /> After a slow start, snowpack in the higher elevations <br /> got a strong boost in the last half of the month. Correspond- <br /> ing with the increased precipitation were stream flow levels <br /> much closer to historic averages. Runoff in area streams had R I O GRANDE NR. DELNORTE <br /> been below average in the basin since May. 170 <br /> FLOW BY RAM YEAR <br /> ISO <br /> 150 <br /> Administrative/Manaxement Concerns 140 <br /> Reservoirs in the basin reduced outflows and began 1so <br /> storing inflows as October came to a dose. As the demand for ;?o <br /> irrigation dropped off, some ditches on the Rio Grande and ,i00 <br /> Conejos prepared to divert water for recharge purposes. s1 '° <br /> Now that the 1998 irrigation year is over, Water s V 7$ <br /> commissioners are busy finalizing diversion records. i 60 — �� <br /> 30 Q <br /> 40 <br /> Public Use Impacts 3 f-� <br /> During the general election held November 3 <br /> Ort Nov Om Jan Fee Mrreh <br /> proposed state amendments 15 and 16 were defeated by a Jam, <br /> wide margin. Amendment 15 would have required water VET`19°'' DRY""" x "S' <br /> meters to be installed and maintained at the owner's expense <br /> on certain wells in the San Luis Valley. Amendment 16 would <br /> have required the Rio Grande Water Conservation District to <br /> pay $40 per acre-foot pumped from beneath state trust land Representative Reservoirs <br /> in the valley. 24 R,o Grande 9aaln <br /> The weather was mild enough to allow a few ditches 22 <br /> to continue diversions for irrigation throughout October. 20 <br /> However,enough snow fell in the mountains that Wolf Creek i 19 <br /> ski area opened for business. : '6A <br /> 3 6 \ <br /> 4 <br /> Rio Grande Plater* SanteMar Is <br /> ® Avp. 10/31 Contents ® 10/31/Se Contents <br /> • <br /> 5 <br />