FGUS65 KSTR 071558 ESPNM TTAA00 KSLR DDHHMM COLORADO BASIN RIVER FORECAST CENTER NATIONAL WEATHER SERVICE SALT LAKE CITY UT June 7, 2023 WATER SUPPLY INFORMATION FOR SAN JUAN RIVER BASIN PRECIPITATION (% OF AVERAGE) AND SNOWPACK (% OF MEDIAN): SUBBASIN MAY PRECIP OCT-MAY PREC JUN 1 SNOWPACK ---------------------- ---------- ------------ --------------- ABOVE NAVAJO RES 95 120 120 ANIMAS 60 125 155 ********************************************************************************** RESERVOIR STORAGE (KAF) AS OF MAY 31, 2023: C U R R E N T Y R L A S T Y R Usable EOM Usable % of EOM Usable % of Capacity Contents Capacity Contents Capacity ---------------------------------------------------------------------------------- LOS PINOS - VALLECITO| 125.4| 90.7| 72| 92.1| 73| --------------------------------------------------------------------------------- SAN JUAN - NAVAJO RES| 1696.0| 1340.3| 79| 953.6| 56| --------------------------------------------------------------------------------- FLORIDA - LEMON RESER| 39.8| 32.2| 81| 26.3| 66| --------------------------------------------------------------------------------- T O T A L S | 1861.2| 1463.2| 79| 1071.9| 58| ********************************************************************************** STREAMFLOW FORECASTS San Juan River watershed Period 50% %AVG 10% 30% 70% 90% AVG ------ ---- ---- ---- ---- ---- ---- --- San Juan River Pagosa Springs Apr-Jul 290 149 315 300 280 270 194 Pagosa Springs Jun-Jul 80 98 106 90 71 61 82 Carracas, nr Apr-Jul 505 153 540 520 490 475 330 Carracas, nr Jun-Jul 137 101 173 153 124 106 135 Rio Blanco River Pagosa Springs, nr, Bla Apr-Jul 71 145 77 74 68 66 49 Pagosa Springs, nr, Bla Jun-Jul 20 100 26 23 16.8 15.0 20 Little Navajo River Oso Div Dam,bl,chromo,n Apr-Jul 10.4 170 11.0 10.6 10.1 9.8 6.1 Oso Div Dam,bl,chromo,n Jun-Jul 1.90 115 2.5 2.1 1.61 1.31 1.65 Navajo River Chromo, nr, Oso Div Dam Apr-Jul 89 153 97 92 86 83 58 Chromo, nr, Oso Div Dam Jun-Jul 30 115 38 33 27 24 26 Piedra River Arboles, nr Apr-Jul 305 169 330 315 300 290 181 Arboles, nr Jun-Jul 77 124 102 88 71 62 62 Los Pinos River Vallecito Reservoir, Ba Apr-Jul 265 150 290 275 255 245 177 Vallecito Reservoir, Ba Jun-Jul 112 127 135 120 100 92 88 San Juan River Navajo Reservoir, Archu Apr-Jul 1010 160 1110 1050 980 945 630 Navajo Reservoir, Archu Jun-Jul 275 115 375 320 245 210 240 Florida River Lemon Reservoir, Durang Apr-Jul 73 152 84 77 69 66 48 Lemon Reservoir, Durang Jun-Jul 33 143 44 37 29 26 23 Animas River Durango Apr-Jul 570 148 630 590 550 530 385 Durango Jun-Jul 290 145 350 310 270 250 200 San Juan River Bluff, nr Apr-Jul 1800 162 1930 1850 1760 1700 1110 Bluff, nr Jun-Jul 605 126 735 655 560 505 480 Mancos River Mancos, nr Apr-Jul 46 267 49 47 44 43 17.2 Mancos, nr Jun-Jul 7.3 203 10.8 8.8 5.8 4.7 3.6 50% Volume that has a 50 percent chance of being exceeded (in 1000 acre-feet). %AVG 50% volume in percent of the 1991-2020 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 1991-2020 period. All forecast volumes reflect natural flow. Actual observed flow may be affected by upstream water management. CBRFC/Nielson