SLCESGCO COLORADO BASIN RIVER FORECASTCENTER NATIONAL WEATHER SERVICE SALT LAKE CITY UTAH April 20, 2026 Seasonal outlook for maximum flows: YDLC2L_F Comments: The observed peak to date at Deerlodge is 2420 cfs on 4/4 due to the hot weather at the end of March. With the extremely low snowpack this year, it is likely ESP is seeing possible future rain events causing larger peaks than we will see from just snowmelt from this point forward. It does appear there is a chance for another similar or slightly higher peak from snowmelt. Timing is very dependent on future weather, but it would likely occur during the next extended warming. Keep in mind the Yampa is notorious for multiple (2-3) similar peaks each spring. The 'Seasonal Maximum' section below contains both the RAW ESP numbers and ADJUSTED numbers that are a more likely scenario. # ESP Forecast Information # # Analysis Period: 2026-04-20 - 2026-07-31 (MST) # Forecast Parameters: River Discharge # Forecast Interval: 2026-04-20 - 2026-07-31 (MST) # Forecast Point: YDLC2L_F Daily Peak -- Seasonal Maximum # # YDLC2L_F # Exceedance Prob. 0.90 0.75 0.50 0.25 0.10 Units # ------------------------------------------------------------------ # RAW ESP 3169 3409 4112 5126 7136 CFSD # ADJUSTED 2000 2500 3500 5000 7000 CFSD Number of Days to Peak from: 2026-04-20 # # YDLC2L_F # Exceedance Prob. 0.90 0.75 0.50 0.25 0.10 Units # ------------------------------------------------------------------ # 19 23 27 34 40 DAYS Number of Days Above: 0 cfs # # YDLC2L_F # Exceedance Prob. 0.90 0.75 0.50 0.25 0.10 Units # ------------------------------------------------------------------ # 103 103 103 103 103 DAYS 1-week Seasonal Peak Flow Max Highlight: # Exceedance Prob. 0.90 0.75 0.50 0.25 0.10 Units # -------------------------------------------------------------------------------- # Interval: 2026-05-15 - 2026-05-21 2700 3103 3659 4516 6277 CFSD # Interval: 2026-05-16 - 2026-05-22 2701 3179 3682 4516 6311 CFSD # Interval: 2026-05-17 - 2026-05-23 2766 3179 3721 4700 6350 CFSD # Interval: 2026-05-18 - 2026-05-24 2766 3149 3463 4564 6581 CFSD # Interval: 2026-05-19 - 2026-05-25 2681 3098 3452 4624 6581 CFSD 2-week Seasonal Peak Flow Max Highlight: # Exceedance Prob. 0.90 0.75 0.50 0.25 0.10 Units # -------------------------------------------------------------------------------- # Interval: 2026-05-15 - 2026-05-28 2854 3179 3889 4999 7129 CFSD # Interval: 2026-05-16 - 2026-05-29 2908 3179 3889 4999 7129 CFSD # Interval: 2026-05-17 - 2026-05-30 2848 3237 4066 4999 7129 CFSD # Interval: 2026-05-18 - 2026-05-31 2848 3179 3782 4761 6604 CFSD # Interval: 2026-05-19 - 2026-06-01 2831 3149 3782 4796 6604 CFSD 1-week Seasonal Peak Flow: # ESP Forecast Information # # Analysis Period: 2026-04-20 - 2026-07-31 (MST) # Forecast Parameters: River River Flow (Mean Daily) - (CFSD) # Forecast Interval: 1 week # Forecast Point: YDLC2L_F # # YDLC2L_F # Exceedance Prob. 0.90 0.75 0.50 0.25 0.10 Units # -------------------------------------------------------------------------------- # Interval: 2026-04-20 - 2026-04-26 1934 1934 1934 1934 1934 CFSD # Interval: 2026-04-21 - 2026-04-27 1934 1934 1934 1934 1934 CFSD # Interval: 2026-04-22 - 2026-04-28 1934 1934 1934 1934 1934 CFSD # Interval: 2026-04-23 - 2026-04-29 1934 1934 1934 1934 1934 CFSD # Interval: 2026-04-24 - 2026-04-30 1934 1934 1934 1934 1934 CFSD # Interval: 2026-04-25 - 2026-05-01 1934 1934 1934 1934 1934 CFSD # Interval: 2026-04-26 - 2026-05-02 1697 1697 1697 1697 1697 CFSD # Interval: 2026-04-27 - 2026-05-03 1411 1411 1551 1816 1991 CFSD # Interval: 2026-04-28 - 2026-05-04 1250 1438 1685 1905 2197 CFSD # Interval: 2026-04-29 - 2026-05-05 1171 1573 1825 2210 2570 CFSD # Interval: 2026-04-30 - 2026-05-06 1590 1722 1874 2342 2950 CFSD # Interval: 2026-05-01 - 2026-05-07 1599 1793 2258 2513 2951 CFSD # Interval: 2026-05-02 - 2026-05-08 1729 1870 2478 3013 3566 CFSD # Interval: 2026-05-03 - 2026-05-09 1729 1919 2871 3527 4129 CFSD # Interval: 2026-05-04 - 2026-05-10 1753 2120 2915 3647 4817 CFSD # Interval: 2026-05-05 - 2026-05-11 2003 2388 3007 3647 5362 CFSD # Interval: 2026-05-06 - 2026-05-12 2010 2464 3140 3863 5473 CFSD # Interval: 2026-05-07 - 2026-05-13 2108 2718 3210 3905 5516 CFSD # Interval: 2026-05-08 - 2026-05-14 2110 2764 3229 3905 5516 CFSD # Interval: 2026-05-09 - 2026-05-15 2408 2743 3251 3905 5516 CFSD # Interval: 2026-05-10 - 2026-05-16 2505 2815 3551 3905 5408 CFSD # Interval: 2026-05-11 - 2026-05-17 2496 2869 3699 4342 6277 CFSD # Interval: 2026-05-12 - 2026-05-18 2495 3089 3699 4342 6277 CFSD # Interval: 2026-05-13 - 2026-05-19 2495 3134 3639 4342 6277 CFSD # Interval: 2026-05-14 - 2026-05-20 2547 3231 3639 4393 6277 CFSD # Interval: 2026-05-15 - 2026-05-21 2700 3103 3659 4516 6277 CFSD # Interval: 2026-05-16 - 2026-05-22 2701 3179 3682 4516 6311 CFSD # Interval: 2026-05-17 - 2026-05-23 2766 3179 3721 4700 6350 CFSD # Interval: 2026-05-18 - 2026-05-24 2766 3149 3463 4564 6581 CFSD # Interval: 2026-05-19 - 2026-05-25 2681 3098 3452 4624 6581 CFSD # Interval: 2026-05-20 - 2026-05-26 2665 3042 3414 4624 6192 CFSD # Interval: 2026-05-21 - 2026-05-27 2566 2940 3321 4651 6156 CFSD # Interval: 2026-05-22 - 2026-05-28 2456 2810 3505 4543 6156 CFSD # Interval: 2026-05-23 - 2026-05-29 2453 2825 3505 4543 6156 CFSD # Interval: 2026-05-24 - 2026-05-30 2401 2621 3618 4702 6156 CFSD # Interval: 2026-05-25 - 2026-05-31 2174 2456 3615 4537 6363 CFSD # Interval: 2026-05-26 - 2026-06-01 1961 2212 3329 4559 6053 CFSD # Interval: 2026-05-27 - 2026-06-02 1719 2067 3137 4559 5467 CFSD # Interval: 2026-05-28 - 2026-06-03 1704 2013 3131 4335 5415 CFSD # Interval: 2026-05-29 - 2026-06-04 1704 1967 3131 4103 5415 CFSD # Interval: 2026-05-30 - 2026-06-05 1704 1901 3040 4057 5422 CFSD # Interval: 2026-05-31 - 2026-06-06 1604 1873 2937 4003 5451 CFSD # Interval: 2026-06-01 - 2026-06-07 1439 1832 2876 3921 5808 CFSD # Interval: 2026-06-02 - 2026-06-08 1320 1777 2784 3771 5423 CFSD # Interval: 2026-06-03 - 2026-06-09 1214 1644 2635 3495 4974 CFSD # Interval: 2026-06-04 - 2026-06-10 1152 1428 2429 3495 4637 CFSD # Interval: 2026-06-05 - 2026-06-11 1113 1315 2355 3270 4417 CFSD # Interval: 2026-06-06 - 2026-06-12 938 1277 2255 3127 3932 CFSD # Interval: 2026-06-07 - 2026-06-13 830 1172 2083 3179 3932 CFSD # Interval: 2026-06-08 - 2026-06-14 796 1057 1873 3179 3922 CFSD # Interval: 2026-06-09 - 2026-06-15 716 928 1726 3000 4124 CFSD # Interval: 2026-06-10 - 2026-06-16 648 854 1639 2673 4481 CFSD # Interval: 2026-06-11 - 2026-06-17 572 815 1502 2550 3857 CFSD # Interval: 2026-06-12 - 2026-06-18 570 794 1363 2511 3248 CFSD # Interval: 2026-06-13 - 2026-06-19 545 704 1248 2248 3177 CFSD # Interval: 2026-06-14 - 2026-06-20 417 625 1195 2118 3692 CFSD # Interval: 2026-06-15 - 2026-06-21 316 540 1134 1953 3653 CFSD # Interval: 2026-06-16 - 2026-06-22 270 483 986 1799 3653 CFSD # Interval: 2026-06-17 - 2026-06-23 251 418 823 1576 3560 CFSD # Interval: 2026-06-18 - 2026-06-24 232 332 687 1427 3675 CFSD # Interval: 2026-06-19 - 2026-06-25 196 306 610 1280 3663 CFSD # Interval: 2026-06-20 - 2026-06-26 221 266 573 1270 3624 CFSD # Interval: 2026-06-21 - 2026-06-27 202 258 538 1178 3451 CFSD # Interval: 2026-06-22 - 2026-06-28 174 237 480 1085 3429 CFSD # Interval: 2026-06-23 - 2026-06-29 168 219 423 947 3410 CFSD # Interval: 2026-06-24 - 2026-06-30 137 185 391 804 2663 CFSD # Interval: 2026-06-25 - 2026-07-01 116 179 381 764 2210 CFSD # Interval: 2026-06-26 - 2026-07-02 87 174 381 722 1859 CFSD # Interval: 2026-06-27 - 2026-07-03 87 154 337 627 1562 CFSD # Interval: 2026-06-28 - 2026-07-04 85 127 306 535 1321 CFSD # Interval: 2026-06-29 - 2026-07-05 75 103 298 479 1145 CFSD # Interval: 2026-06-30 - 2026-07-06 58 97 266 430 1021 CFSD # Interval: 2026-07-01 - 2026-07-07 57 89 235 411 927 CFSD # Interval: 2026-07-02 - 2026-07-08 57 80 207 390 826 CFSD # Interval: 2026-07-03 - 2026-07-09 54 78 181 343 699 CFSD # Interval: 2026-07-04 - 2026-07-10 54 63 175 323 550 CFSD # Interval: 2026-07-05 - 2026-07-11 54 59 131 316 472 CFSD # Interval: 2026-07-06 - 2026-07-12 53 54 64 286 457 CFSD # Interval: 2026-07-07 - 2026-07-13 53 53 55 295 454 CFSD # Interval: 2026-07-08 - 2026-07-14 53 53 55 293 452 CFSD # Interval: 2026-07-09 - 2026-07-15 53 53 54 249 447 CFSD # Interval: 2026-07-10 - 2026-07-16 53 53 54 175 443 CFSD # Interval: 2026-07-11 - 2026-07-17 53 53 54 209 442 CFSD # Interval: 2026-07-12 - 2026-07-18 53 53 54 201 439 CFSD # Interval: 2026-07-13 - 2026-07-19 53 53 53 188 390 CFSD # Interval: 2026-07-14 - 2026-07-20 53 53 53 172 385 CFSD # Interval: 2026-07-15 - 2026-07-21 53 53 53 151 256 CFSD # Interval: 2026-07-16 - 2026-07-22 53 53 53 119 236 CFSD # Interval: 2026-07-17 - 2026-07-23 53 53 53 104 234 CFSD # Interval: 2026-07-18 - 2026-07-24 53 53 53 83 196 CFSD # Interval: 2026-07-19 - 2026-07-25 53 53 53 80 158 CFSD # Interval: 2026-07-20 - 2026-07-26 53 53 53 83 146 CFSD # Interval: 2026-07-21 - 2026-07-27 53 53 53 89 208 CFSD # Interval: 2026-07-22 - 2026-07-28 53 53 53 72 208 CFSD # Interval: 2026-07-23 - 2026-07-29 53 53 53 89 208 CFSD # Interval: 2026-07-24 - 2026-07-30 52 53 53 89 208 CFSD # Interval: 2026-07-25 - 2026-07-31 52 53 53 89 208 CFSD 2-week Seasonal Peak Flow: # ESP Forecast Information # # Analysis Period: 2026-04-20 - 2026-07-31 (MST) # Forecast Parameters: River River Flow (Mean Daily) - (CFSD) # Forecast Interval: 2 week # Forecast Point: YDLC2L_F # # YDLC2L_F # Exceedance Prob. 0.90 0.75 0.50 0.25 0.10 Units # -------------------------------------------------------------------------------- # Interval: 2026-04-20 - 2026-05-03 1934 1934 1934 1934 1991 CFSD # Interval: 2026-04-21 - 2026-05-04 1934 1934 1934 1934 2197 CFSD # Interval: 2026-04-22 - 2026-05-05 1934 1934 1934 2210 2570 CFSD # Interval: 2026-04-23 - 2026-05-06 1934 1934 1934 2342 2950 CFSD # Interval: 2026-04-24 - 2026-05-07 1934 1934 2258 2513 2951 CFSD # Interval: 2026-04-25 - 2026-05-08 1934 1934 2478 3013 3566 CFSD # Interval: 2026-04-26 - 2026-05-09 1729 1919 2871 3527 4129 CFSD # Interval: 2026-04-27 - 2026-05-10 1801 2120 2915 3647 4817 CFSD # Interval: 2026-04-28 - 2026-05-11 2003 2388 3007 3647 5362 CFSD # Interval: 2026-04-29 - 2026-05-12 2010 2464 3140 3863 5473 CFSD # Interval: 2026-04-30 - 2026-05-13 2108 2718 3210 3905 5516 CFSD # Interval: 2026-05-01 - 2026-05-14 2110 2764 3229 3905 5516 CFSD # Interval: 2026-05-02 - 2026-05-15 2408 2830 3251 3905 5516 CFSD # Interval: 2026-05-03 - 2026-05-16 2505 2917 3551 3905 5516 CFSD # Interval: 2026-05-04 - 2026-05-17 2785 3082 3717 4342 6285 CFSD # Interval: 2026-05-05 - 2026-05-18 2840 3203 3717 4342 6285 CFSD # Interval: 2026-05-06 - 2026-05-19 2846 3203 3717 4342 6285 CFSD # Interval: 2026-05-07 - 2026-05-20 2912 3267 3717 4393 6285 CFSD # Interval: 2026-05-08 - 2026-05-21 2852 3277 3820 4516 6285 CFSD # Interval: 2026-05-09 - 2026-05-22 2742 3277 3953 4516 6311 CFSD # Interval: 2026-05-10 - 2026-05-23 3072 3277 3953 4700 6350 CFSD # Interval: 2026-05-11 - 2026-05-24 3096 3277 4016 4999 7129 CFSD # Interval: 2026-05-12 - 2026-05-25 3096 3277 3996 4999 7129 CFSD # Interval: 2026-05-13 - 2026-05-26 3096 3277 3889 4999 7129 CFSD # Interval: 2026-05-14 - 2026-05-27 2854 3243 3889 4999 7129 CFSD # Interval: 2026-05-15 - 2026-05-28 2854 3179 3889 4999 7129 CFSD # Interval: 2026-05-16 - 2026-05-29 2908 3179 3889 4999 7129 CFSD # Interval: 2026-05-17 - 2026-05-30 2848 3237 4066 4999 7129 CFSD # Interval: 2026-05-18 - 2026-05-31 2848 3179 3782 4761 6604 CFSD # Interval: 2026-05-19 - 2026-06-01 2831 3149 3782 4796 6604 CFSD # Interval: 2026-05-20 - 2026-06-02 2681 3149 3782 4796 6398 CFSD # Interval: 2026-05-21 - 2026-06-03 2636 3095 3782 4765 6363 CFSD # Interval: 2026-05-22 - 2026-06-04 2534 3028 3782 4765 6363 CFSD # Interval: 2026-05-23 - 2026-06-05 2509 2848 3782 4765 6363 CFSD # Interval: 2026-05-24 - 2026-06-06 2404 2648 3755 4765 6363 CFSD # Interval: 2026-05-25 - 2026-06-07 2174 2456 3615 4685 6400 CFSD # Interval: 2026-05-26 - 2026-06-08 1961 2212 3329 4559 6320 CFSD # Interval: 2026-05-27 - 2026-06-09 1773 2067 3137 4559 6259 CFSD # Interval: 2026-05-28 - 2026-06-10 1704 2013 3131 4335 6259 CFSD # Interval: 2026-05-29 - 2026-06-11 1704 1967 3131 4143 6259 CFSD # Interval: 2026-05-30 - 2026-06-12 1704 1901 3040 4057 6259 CFSD # Interval: 2026-05-31 - 2026-06-13 1604 1873 3016 4003 6259 CFSD # Interval: 2026-06-01 - 2026-06-14 1439 1832 2931 3921 5808 CFSD # Interval: 2026-06-02 - 2026-06-15 1320 1777 2859 3771 5423 CFSD # Interval: 2026-06-03 - 2026-06-16 1214 1644 2751 3495 4997 CFSD # Interval: 2026-06-04 - 2026-06-17 1171 1428 2447 3495 4666 CFSD # Interval: 2026-06-05 - 2026-06-18 1115 1315 2490 3270 4552 CFSD # Interval: 2026-06-06 - 2026-06-19 938 1277 2281 3179 4496 CFSD # Interval: 2026-06-07 - 2026-06-20 830 1172 2117 3281 4495 CFSD # Interval: 2026-06-08 - 2026-06-21 796 1057 2001 3219 4485 CFSD # Interval: 2026-06-09 - 2026-06-22 716 928 1837 3179 4482 CFSD # Interval: 2026-06-10 - 2026-06-23 648 854 1674 3074 4482 CFSD # Interval: 2026-06-11 - 2026-06-24 572 815 1573 2868 4495 CFSD # Interval: 2026-06-12 - 2026-06-25 570 794 1363 2516 4482 CFSD # Interval: 2026-06-13 - 2026-06-26 545 704 1248 2307 4482 CFSD # Interval: 2026-06-14 - 2026-06-27 417 625 1195 2196 4482 CFSD # Interval: 2026-06-15 - 2026-06-28 316 540 1134 2010 4482 CFSD # Interval: 2026-06-16 - 2026-06-29 270 483 986 1799 4482 CFSD # Interval: 2026-06-17 - 2026-06-30 254 418 823 1576 3745 CFSD # Interval: 2026-06-18 - 2026-07-01 234 365 687 1427 3675 CFSD # Interval: 2026-06-19 - 2026-07-02 221 306 610 1280 3663 CFSD # Interval: 2026-06-20 - 2026-07-03 221 266 573 1270 3624 CFSD # Interval: 2026-06-21 - 2026-07-04 202 258 538 1178 3451 CFSD # Interval: 2026-06-22 - 2026-07-05 174 237 480 1085 3429 CFSD # Interval: 2026-06-23 - 2026-07-06 168 219 423 947 3410 CFSD # Interval: 2026-06-24 - 2026-07-07 137 185 391 804 2663 CFSD # Interval: 2026-06-25 - 2026-07-08 116 179 381 764 2210 CFSD # Interval: 2026-06-26 - 2026-07-09 88 174 381 722 1859 CFSD # Interval: 2026-06-27 - 2026-07-10 87 154 337 627 1562 CFSD # Interval: 2026-06-28 - 2026-07-11 85 127 306 535 1321 CFSD # Interval: 2026-06-29 - 2026-07-12 75 103 298 479 1145 CFSD # Interval: 2026-06-30 - 2026-07-13 58 97 266 455 1021 CFSD # Interval: 2026-07-01 - 2026-07-14 57 89 235 440 927 CFSD # Interval: 2026-07-02 - 2026-07-15 57 80 207 402 826 CFSD # Interval: 2026-07-03 - 2026-07-16 54 78 181 389 699 CFSD # Interval: 2026-07-04 - 2026-07-17 54 63 198 354 550 CFSD # Interval: 2026-07-05 - 2026-07-18 54 59 132 316 472 CFSD # Interval: 2026-07-06 - 2026-07-19 53 54 73 295 457 CFSD # Interval: 2026-07-07 - 2026-07-20 53 53 55 295 454 CFSD # Interval: 2026-07-08 - 2026-07-21 53 53 55 293 452 CFSD # Interval: 2026-07-09 - 2026-07-22 53 53 54 252 447 CFSD # Interval: 2026-07-10 - 2026-07-23 53 53 54 229 443 CFSD # Interval: 2026-07-11 - 2026-07-24 53 53 54 209 442 CFSD # Interval: 2026-07-12 - 2026-07-25 53 53 54 201 439 CFSD # Interval: 2026-07-13 - 2026-07-26 53 53 54 188 390 CFSD # Interval: 2026-07-14 - 2026-07-27 53 53 54 172 385 CFSD # Interval: 2026-07-15 - 2026-07-28 53 53 54 151 256 CFSD # Interval: 2026-07-16 - 2026-07-29 53 53 54 131 237 CFSD # Interval: 2026-07-17 - 2026-07-30 53 53 54 114 237 CFSD # Interval: 2026-07-18 - 2026-07-31 53 53 54 103 213 CFSD Please feel free to contact the forecaster at brenda.alcorn@noaa.gov Issued by: B.Alcorn NNNN $$