124  
FGUS65 KSTR 041921  
ESPCO  
 
NATIONAL WEATHER SERVICE  
COLORADO BASIN RIVER FORECAST CENTER  
SALT LAKE CITY, UT  
 
WATER SUPPLY INFORMATION FOR  
 
THE COLORADO RIVER BASIN WITHIN COLORADO  
 
JUNE 4, 2020  
 
BASIN CONDITIONS (% OF AVERAGE) AS OF JUNE 1:  
*NOTE: SNOW NOT REPORTED IN JUNE  
 
SUBBASIN MAY OCT-MAY JUN1 MAY  
PRECIP PRECIP SNOW* STRMFLW  
---------------------- ------ ------- ----- --------  
UPPER COLORADO 50 85 90  
GUNNISON 40 75 60  
DOLORES/SAN MIGUEL 20 70 40  
SAN JUAN 20 65 85  
YAMPA/WHITE 60 95 100  
 
RESERVOIR STORAGE (KAF) AS OF MAY 31:  
C U R R E N T Y R 1981-2010  
EOM % OF % OF MAY 31 USABLE  
STORAGE AVERAGE CAPACITYAVG STORAGE CAPACITY  
---------------------------------------------------------------------------  
COLORADO - LAKE GRANB| 483.3| 133| 99|| 363.6| 490.3|  
WILLOW CK - WILLOW CK| 8.9| 100| 98|| 8.9| 9.1|  
WILLIAMS FORK - WILLI| 88.3| 121| 91|| 73.0| 96.9|  
MUDDY CK - WOLFORD MO| 66.0| 110| 100|| 59.9| 66.0|  
BLUE - DILLON RESERVO| 245.6| 106| 97|| 232.7| 254.0|  
BLUE - GREEN MTN RESE| 108.5| 121| 74|| 89.8| 146.9|  
HOMESTAKE CK - HOMEST| 29.2| 118| 68|| 24.8| 43.0|  
FRYING PAN - RUEDI RE| 79.4| 102| 78|| 78.0| 102.0|  
PLATEAU CK - VEGA RES| 25.9| 84| 79|| 30.8| 32.9|  
TAYLOR - TAYLOR PARK | 86.0| 115| 81|| 74.7| 106.2|  
GUNNISON - BLUE MESA | 549.7| 96| 66|| 575.3| 829.5|  
GUNNISON - MORROW POI| 106.5| 94| 91|| 113.2| 117.0|  
GUNNISON - CRYSTAL RE| 17.4| 104| 99|| 16.7| 17.5|  
MUDDY CK - PAONIA RES| 15.7| 100| 94|| 15.7| 16.7|  
UNCOMPAHGRE - RIDGWAY| 67.9| 96| 82|| 70.7| 83.0|  
DOLORES - MCPHEE RESE| 283.4| 81| 74|| 347.8| 381.1|  
LOS PINOS - VALLECITO| 123.7| 123| 99|| 100.5| 125.4|  
SAN JUAN - NAVAJO RES| 1366.7| 96| 81|| 1429.7| 1696.0|  
FLORIDA - LEMON RESER| 28.9| 90| 73|| 32.1| 39.8|  
COLORADO - LAKE POWEL| 12238.5| 67| 50||18186.3| 24322.0|  
 
STREAMFLOW FORECASTS:  
DEVELOPED: JUN 1 2020  
 
YAMPA/WHITE BASINS  
PERIOD 50% %AVG 10% 30% 70% 90% AVG  
------ ---- ---- ---- ---- ---- ---- ---  
YAMPA RIVER  
STAGECOACH RSVR, ABV APR-JUL 23 100 27 25 21.0 19.8 23  
STAGECOACH RSVR, ABV JUN-JUL 6.2 72 10.0 8.0 4.5 3.0 8.6  
STEAMBOAT SPRINGS APR-JUL 260 100 300 280 250 240 260  
STEAMBOAT SPRINGS JUN-JUL 90 76 130 110 80 70 119  
ELK RIVER  
MILNER, NR APR-JUL 300 94 355 320 285 270 320  
MILNER, NR JUN-JUL 129 81 185 150 114 100 159  
ELKHEAD CK  
LONG GULCH, ABV, HAYDEN APR-JUL 70 96 78 73 69 67 73  
LONG GULCH, ABV, HAYDEN JUN-JUL 4.8 46 13.0 7.5 3.4 2.0 10.4  
YAMPA RIVER  
MAYBELL, NR APR-JUL 860 92 980 935 815 780 935  
MAYBELL, NR JUN-JUL 300 77 420 375 255 220 390  
LITTLE SNAKE RIVER  
SLATER, NR APR-JUL 147 94 168 158 138 128 156  
SLATER, NR JUN-JUL 44 67 65 55 35 25 66  
DIXON, NR APR-JUL 275 80 325 300 260 245 345  
DIXON, NR JUN-JUL 76 56 125 99 60 45 135  
LILY, NR APR-JUL 270 78 320 290 255 235 345  
LILY, NR JUN-JUL 75 56 125 97 60 40 134  
YAMPA RIVER  
DEERLODGE PARK APR-JUL 1130 91 1310 1210 1040 980 1240  
DEERLODGE PARK JUN-JUL 370 74 550 450 280 220 500  
WHITE RIVER  
MEEKER, NR APR-JUL 185 66 220 200 173 162 280  
MEEKER, NR JUN-JUL 83 58 120 100 71 60 144  
WATSON, NR APR-JUL 175 62 210 190 158 145 280  
WATSON, NR JUN-JUL 90 65 125 105 73 60 139  
 
UPPER COLORADO, ABOVE GUNNISON BASIN  
PERIOD 50% %AVG 10% 30% 70% 90% AVG  
------ ---- ---- ---- ---- ---- ---- ---  
COLORADO RIVER  
LAKE GRANBY, GRANBY, NR APR-JUL 220 100 250 235 205 190 220  
LAKE GRANBY, GRANBY, NR JUN-JUL 127 88 157 142 112 97 145  
WILLOW CK  
WILLOW CK RESERVOIR, GR APR-JUL 40 85 48 44 37 34 47  
WILLOW CK RESERVOIR, GR JUN-JUL 13.0 62 21 17 10.0 7.0 21  
FRASER RIVER  
WINTER PARK APR-JUL 18.4 95 22 20 17.2 16.0 19.4  
WINTER PARK JUN-JUL 12.4 87 16.0 14.0 11.2 10.0 14.2  
WILLIAMS FORK RIVER  
WILLIAMS FORK RESERVOIR APR-JUL 86 90 100 93 80 75 96  
WILLIAMS FORK RESERVOIR JUN-JUL 51 78 65 58 45 40 65  
BLUE RIVER  
DILLON RESERVOIR APR-JUL 155 95 175 165 145 135 163  
DILLON RESERVOIR JUN-JUL 98 89 118 108 88 78 110  
GREEN MTN RESERVOIR APR-JUL 255 93 290 275 240 225 275  
GREEN MTN RESERVOIR JUN-JUL 155 84 190 175 140 125 184  
MUDDY CK  
WOLFORD MOUNTAIN RESERV APR-JUL 66 122 75 71 62 58 54  
WOLFORD MOUNTAIN RESERV JUN-JUL 16.1 83 25 21 12.1 8.1 19.3  
COLORADO RIVER  
KREMMLING, NR APR-JUL 825 96 930 880 770 720 860  
KREMMLING, NR JUN-JUL 440 84 545 495 385 335 525  
EAGLE RIVER  
GYPSUM, BLO APR-JUL 275 82 315 295 255 235 335  
GYPSUM, BLO JUN-JUL 157 73 197 177 137 117 215  
COLORADO RIVER  
DOTSERO, NR APR-JUL 1220 87 1380 1300 1150 1080 1400  
DOTSERO, NR JUN-JUL 650 77 810 730 580 510 840  
FRYING PAN RIVER  
RUEDI RESERVOIR, BASALT APR-JUL 120 86 140 130 110 100 139  
RUEDI RESERVOIR, BASALT JUN-JUL 73 82 93 83 63 53 89  
ROARING FORK RIVER  
GLENWOOD SPRINGS APR-JUL 510 74 590 550 475 440 690  
GLENWOOD SPRINGS JUN-JUL 325 71 405 365 290 255 455  
COLORADO RIVER  
GLENWOOD SPRINGS, BLO APR-JUL 1780 84 2100 1940 1640 1500 2110  
GLENWOOD SPRINGS, BLO JUN-JUL 995 77 1320 1160 855 715 1300  
CAMEO, NR APR-JUL 1850 78 2150 2000 1720 1600 2360  
CAMEO, NR JUN-JUL 1040 73 1340 1190 910 790 1420  
PLATEAU CK  
CAMEO, NR APR-JUL 40 32 60 50 36 32 124  
CAMEO, NR JUN-JUL 10.1 21 30 20 6.1 2.1 49  
 
GUNNISON BASIN  
PERIOD 50% %AVG 10% 30% 70% 90% AVG  
------ ---- ---- ---- ---- ---- ---- ---  
TAYLOR RIVER  
TAYLOR PARK RESERVOIR APR-JUL 69 70 79 73 65 61 99  
TAYLOR PARK RESERVOIR JUN-JUL 38 61 48 42 34 30 62  
ALMONT APR-JUL 103 66 118 109 96 88 155  
ALMONT JUN-JUL 58 62 73 64 51 43 94  
EAST RIVER  
ALMONT APR-JUL 116 64 137 125 110 103 182  
ALMONT JUN-JUL 58 55 79 67 52 45 106  
GUNNISON RIVER  
GUNNISON, NR APR-JUL 235 64 275 250 215 200 370  
GUNNISON, NR JUN-JUL 122 57 165 140 106 90 215  
TOMICHI CK  
GUNNISON APR-JUL 44 59 52 48 41 36 74  
GUNNISON JUN-JUL 20 54 28 24 16.9 12.0 37  
LAKE FORK RIVER  
GATEVIEW APR-JUL 79 64 95 86 74 67 123  
GATEVIEW JUN-JUL 43 53 59 50 38 31 81  
GUNNISON RIVER  
BLUE MESA RESERVOIR APR-JUL 395 59 470 425 375 350 675  
BLUE MESA RESERVOIR JUN-JUL 193 51 265 220 174 145 380  
MORROW POINT RESERVOIR APR-JUL 425 57 495 450 405 370 740  
MORROW POINT RESERVOIR JUN-JUL 210 52 280 235 189 155 405  
CRYSTAL RESERVOIR APR-JUL 465 56 540 500 440 405 835  
CRYSTAL RESERVOIR JUN-JUL 230 51 305 265 205 170 450  
MUDDY CK  
PAONIA RESERVOIR, BARDI MAR-JUN 31 32 35 32 30 29 96  
PAONIA RESERVOIR, BARDI APR-JUL 30 31 35 32 29 28 97  
PAONIA RESERVOIR, BARDI JUN-JUL 6.9 24 11.9 8.9 5.9 4.9 29  
NF GUNNISON RIVER  
SOMERSET, NR APR-JUL 148 50 177 159 139 134 295  
SOMERSET, NR JUN-JUL 46 40 75 57 37 32 114  
SURFACE CK  
CEDAREDGE APR-JUL 6.4 38 7.5 6.6 6.0 5.4 16.8  
CEDAREDGE JUN-JUL 2.0 26 3.1 2.2 1.55 1.00 7.6  
UNCOMPAHGRE RIVER  
RIDGWAY RESERVOIR APR-JUL 55 54 64 59 52 48 101  
RIDGWAY RESERVOIR JUN-JUL 34 52 43 38 31 27 65  
COLONA APR-JUL 54 39 69 61 50 47 137  
COLONA JUN-JUL 31 38 46 38 27 24 81  
DELTA APR-JUL 33 29 42 37 30 25 113  
DELTA JUN-JUL 15.5 27 24 19 12.7 7.0 57  
GUNNISON RIVER  
GRAND JUNCTION, NR APR-JUL 685 46 850 750 640 600 1480  
GRAND JUNCTION, NR JUN-JUL 295 42 460 360 250 210 695  
 
DOLORES BASIN  
PERIOD 50% %AVG 10% 30% 70% 90% AVG  
------ ---- ---- ---- ---- ---- ---- ---  
DOLORES RIVER  
DOLORES APR-JUL 96 39 114 102 92 87 245  
DOLORES JUN-JUL 28 30 46 34 24.0 19.0 92  
MCPHEE RESERVOIR APR-JUL 95 32 115 102 91 86 295  
MCPHEE RESERVOIR JUN-JUL 28 29 48 35 24.0 19.0 97  
SAN MIGUEL RIVER  
PLACERVILLE, NR APR-JUL 64 50 76 70 58 53 128  
PLACERVILLE, NR JUN-JUL 35 47 47 41 29 24 75  
DOLORES RIVER  
CISCO, NR APR-JUL 155 27 205 171 148 142 565  
CISCO, NR JUN-JUL 52 28 100 68 45 39 184  
 
UPPER COLORADO, CONFLUENCE  
PERIOD 50% %AVG 10% 30% 70% 90% AVG  
------ ---- ---- ---- ---- ---- ---- ---  
COLORADO RIVER  
CISCO, NR APR-JUL 2700 61 3150 2900 2500 2250 4440  
CISCO, NR JUN-JUL 1410 60 1860 1610 1210 960 2340  
 
SAN JUAN BASIN  
PERIOD 50% %AVG 10% 30% 70% 90% AVG  
------ ---- ---- ---- ---- ---- ---- ---  
SAN JUAN RIVER  
PAGOSA SPRINGS APR-JUL 127 59 145 132 120 117 215  
PAGOSA SPRINGS JUN-JUL 29 30 47 34 22.0 19.0 96  
CARRACAS, NR APR-JUL 200 53 225 210 187 182 380  
CARRACAS, NR JUN-JUL 57 36 82 65 44 39 158  
RIO BLANCO RIVER  
PAGOSA SPRINGS, NR, BLA APR-JUL 31 57 35 33 29 28 54  
PAGOSA SPRINGS, NR, BLA JUN-JUL 9.0 39 13.0 10.5 7.2 6.0 23  
NAVAJO RIVER  
CHROMO, NR, OSO DIV DAM APR-JUL 33 51 39 35 31 30 65  
CHROMO, NR, OSO DIV DAM JUN-JUL 10.0 33 16.0 12.4 8.1 7.0 30  
PIEDRA RIVER  
ARBOLES, NR APR-JUL 112 53 125 116 104 101 210  
ARBOLES, NR JUN-JUL 29 39 42 33 21.0 18.0 74  
LOS PINOS RIVER  
VALLECITO RESERVOIR, BA APR-JUL 130 67 150 138 121 114 194  
VALLECITO RESERVOIR, BA JUN-JUL 48 48 68 56 39 32 99  
SAN JUAN RIVER  
NAVAJO RESERVOIR, ARCHU APR-JUL 365 50 410 385 335 320 735  
NAVAJO RESERVOIR, ARCHU JUN-JUL 86 30 130 108 55 41 290  
FLORIDA RIVER  
LEMON RESERVOIR, DURANG APR-JUL 34 62 39 36 32 29 55  
LEMON RESERVOIR, DURANG JUN-JUL 13.0 48 18.0 15.0 11.0 7.5 27  
ANIMAS RIVER  
DURANGO APR-JUL 260 63 305 275 245 230 415  
DURANGO JUN-JUL 113 51 160 130 96 82 220  
SAN JUAN RIVER  
FARMINGTON APR-JUL 570 52 680 620 540 510 1100  
FARMINGTON JUN-JUL 186 40 295 235 155 127 470  
LA PLATA RIVER  
HESPERUS APR-JUL 11.9 52 14.1 12.8 11.1 10.1 23  
HESPERUS JUN-JUL 3.8 45 6.0 4.7 3.0 2.0 8.5  
SAN JUAN RIVER  
BLUFF, NR APR-JUL 545 50 655 595 510 475 1100  
BLUFF, NR JUN-JUL 168 37 280 220 134 100 450  
MANCOS RIVER  
MANCOS, NR APR-JUL 10.7 35 12.7 11.0 10.2 10.1 31  
MANCOS, NR JUN-JUL 2.3 22 4.3 2.6 1.82 1.70 10.4  
 
LAKE POWELL  
PERIOD 50% %AVG 10% 30% 70% 90% AVG  
------ ---- ---- ---- ---- ---- ---- ---  
COLORADO RIVER  
LAKE POWELL, GLEN CYN D APR-JUL 4100 57 4720 4430 3760 3520 7160  
LAKE POWELL, GLEN CYN D JUN-JUL 2080 55 2700 2410 1740 1500 3760  
 
50% MOST PROBABLE VOLUME IN 1000 ACRE-FEET.  
%AVG MOST PROBABLE VOLUME IN PERCENT OF THE 1981-2010 AVERAGE.  
10% VOLUME THAT HAS A 10 PERCENT CHANCE OF BEING EXCEEDED.  
30% VOLUME THAT HAS A 30 PERCENT CHANCE OF BEING EXCEEDED.  
90% VOLUME THAT HAS A 90 PERCENT CHANCE OF BEING EXCEEDED.  
70% VOLUME THAT HAS A 70 PERCENT CHANCE OF BEING EXCEEDED.  
AVG AVERAGE VOLUME FOR THE 1981-2010 PERIOD.  
 
ALL FORECAST VOLUMES REFLECT NATURAL FLOW. ACTUAL OBSERVED FLOW MAY  
BE AFFECTED BY UPSTREAM WATER MANAGEMENT.  
 
CBRFC/MOSER  
 
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