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Archive:
Water Year
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SNAKE - AT AMERICAN FALLS DAM
(
AMFI1
)
Forecasts for Water Year
2026
Official Water Supply
ESP with 10 Days QPF
Ensemble:
2026-07-27
Issued:
2026-07-27
Hide Forecast
Forecast
Period
Forecasts Are in KAF
30 Year
Average
(1991-2020)
90 %
50 %
%
Average
10 %
APR-SEP
664
683
26
704
2624
APR-JUL
599
599
24
599
2529
APR-AUG
587
595
23
606
2531
JAN-SEP
1803
1823
49
1843
3745
JAN-JUL
1738
1738
48
1738
3651
OCT-SEP
2890
2910
60
2930
4883
Experimental Water Supply
HEFS with 15 days EQPF
Ensemble:
2026-07-27
Issued:
2026-07-27
Hide Forecast
APR-SEP
663
679
26
703
2624
APR-JUL
598
599
24
600
2529
APR-AUG
584
594
23
605
2531
JAN-SEP
1802
1818
49
1842
3745
JAN-JUL
1737
1738
48
1740
3651
OCT-SEP
2890
2905
60
2929
4883
Reference
ESP with 0 Days QPF
Ensemble:
2026-07-27
Issued:
2026-07-27
Hide Forecast
APR-SEP
666
688
26
729
2624
APR-JUL
598
601
24
604
2529
APR-AUG
585
602
24
630
2531
JAN-SEP
1805
1827
49
1868
3745
JAN-JUL
1738
1740
48
1743
3651
OCT-SEP
2892
2914
60
2955
4883
Move the mouse over the desired "Forecast Period" to display a graph.
ESP10, 254, 339, 418, 451, 481, 70, , 74
ESP10, 246, 329, 412, 446, 476, 72, , 76
ESP10, 249, 334, 414, 450, 478, 75, , 79
ESP10, 250, 332, 416, 449, 477, 77, , 81
ESP10, 255, 334, 417, 450, 478, 79, , 83
ESP10, 257, 331, 415, 450, 476, 81, , 85
ESP10, 257, 327, 414, 447, 474, 84, , 88
ESP10, 254, 322, 414, 445, 472, 86, , 90
ESP10, 251, 319, 411, 443, 471, 88, , 92
ESP10, 240, 308, 404, 437, 466, 90, , 94
ESP10, 236, 303, 399, 433, 462, 92, , 96
ESP10, 241, 302, 399, 435, 463, 95, , 99
ESP10, 251, 308, 405, 440, 467, 97, , 101
ESP10, 258, 310, 406, 441, 470, 99, , 103
ESP10, 261, 312, 414, 443, 474, 101, , 105
ESP10, 248, 302, 407, 439, 469, 104, , 108
ESP10, 239, 294, 401, 434, 465, 106, , 110
ESP10, 238, 293, 399, 433, 464, 108, , 112
ESP10, 249, 302, 406, 439, 469, 110, , 114
ESP10, 250, 303, 406, 440, 469, 113, , 117
ESP10, 247, 300, 404, 438, 467, 115, , 119
ESP10, 256, 313, 412, 442, 471, 117, , 121
ESP10, 256, 318, 414, 444, 471, 119, , 123
ESP10, 258, 328, 415, 445, 472, 121, , 125
ESP10, 264, 335, 422, 446, 475, 124, , 128
ESP10, 264, 334, 421, 445, 472, 126, , 130
ESP10, 269, 340, 425, 448, 474, 128, , 132
ESP10, 277, 343, 426, 448, 476, 130, , 134
ESP10, 279, 344, 425, 449, 477, 133, , 137
ESP10, 267, 332, 416, 443, 472, 135, , 139
ESP10, 269, 335, 417, 445, 473, 137, , 141
ESP10, 276, 343, 419, 446, 477, 139, , 143
ESP10, 283, 349, 421, 449, 480, 141, , 145
ESP10, 278, 348, 418, 448, 478, 144, , 148
ESP10, 278, 348, 419, 449, 478, 146, , 150
ESP10, 278, 348, 422, 450, 480, 148, , 152
ESP10, 277, 346, 421, 451, 483, 150, , 154
ESP10, 271, 339, 415, 448, 480, 153, , 157
ESP10, 269, 336, 412, 447, 478, 155, , 159
ESP10, 279, 345, 421, 451, 482, 157, , 161
ESP10, 287, 350, 425, 454, 484, 159, , 163
ESP10, 283, 343, 423, 451, 481, 161, , 165
ESP10, 288, 347, 427, 453, 483, 164, , 168
ESP10, 294, 350, 430, 455, 484, 166, , 170
ESP10, 298, 350, 431, 457, 484, 168, , 172
ESP10, 296, 349, 433, 456, 482, 170, , 174
ESP10, 302, 355, 438, 461, 486, 173, , 177
ESP10, 305, 358, 440, 462, 489, 175, , 179
ESP10, 304, 361, 439, 462, 488, 177, , 181
ESP10, 298, 363, 436, 460, 487, 179, , 183
ESP10, 301, 365, 438, 460, 487, 182, , 186
ESP10, 297, 364, 437, 458, 486, 184, , 188
ESP10, 310, 369, 440, 460, 487, 186, , 190
ESP10, 313, 373, 441, 461, 488, 188, , 192
ESP10, 319, 383, 441, 461, 489, 190, , 194
ESP10, 319, 386, 441, 464, 489, 193, , 197
ESP10, 310, 379, 438, 465, 486, 195, , 199
ESP10, 315, 384, 441, 467, 487, 197, , 201
ESP10, 325, 388, 443, 468, 489, 199, , 203
ESP10, 316, 371, 433, 458, 482, 202, , 206
ESP10, 306, 356, 424, 452, 473, 204, , 208
ESP10, 319, 365, 432, 457, 479, 206, , 210
ESP10, 309, 357, 426, 453, 475, 208, , 212
ESP10, 300, 351, 423, 450, 473, 210, , 214
ESP10, 306, 352, 426, 453, 474, 213, , 217
ESP10, 301, 345, 421, 448, 470, 215, , 219
ESP10, 294, 340, 415, 446, 467, 217, , 221
ESP10, 310, 355, 425, 454, 475, 219, , 223
ESP10, 314, 361, 429, 457, 477, 222, , 226
ESP10, 305, 354, 422, 454, 472, 224, , 228
ESP10, 295, 341, 412, 447, 467, 226, , 230
ESP10, 287, 331, 403, 442, 463, 228, , 232
ESP10, 276, 317, 393, 435, 457, 230, , 234
ESP10, 278, 320, 396, 437, 459, 233, , 237
ESP10, 282, 322, 397, 438, 464, 235, , 239
ESP10, 272, 314, 387, 431, 460, 237, , 241
ESP10, 262, 303, 378, 424, 456, 239, , 243
ESP10, 266, 298, 374, 421, 456, 242, , 246
ESP10, 271, 301, 379, 423, 457, 244, , 248
ESP10, 275, 299, 381, 422, 458, 246, , 250
ESP10, 280, 303, 381, 425, 460, 248, , 252
ESP10, 289, 309, 383, 434, 461, 251, , 255
ESP10, 305, 320, 390, 442, 465, 253, , 257
ESP10, 301, 318, 386, 440, 462, 255, , 259
ESP10, 292, 315, 379, 434, 458, 257, , 261
ESP10, 292, 315, 382, 435, 461, 259, , 263
ESP10, 294, 316, 386, 436, 465, 262, , 266
ESP10, 305, 324, 393, 441, 468, 264, , 268
ESP10, 305, 322, 391, 441, 468, 266, , 270
ESP10, 306, 322, 389, 441, 467, 268, , 272
ESP10, 296, 319, 374, 432, 460, 271, , 275
ESP10, 291, 317, 373, 429, 456, 273, , 277
ESP10, 293, 331, 372, 429, 456, 275, , 279
ESP10, 283, 321, 361, 420, 450, 277, , 281
ESP10, 277, 315, 358, 415, 446, 279, , 283
ESP10, 276, 313, 360, 412, 444, 282, , 286
ESP10, 284, 314, 363, 414, 446, 284, , 288
ESP10, 290, 313, 362, 412, 448, 286, , 290
ESP10, 292, 315, 363, 413, 449, 288, , 292
ESP10, 295, 315, 366, 412, 452, 291, , 295
ESP10, 296, 320, 369, 413, 453, 293, , 297
ESP10, 295, 320, 369, 414, 453, 295, , 299
ESP10, 296, 321, 369, 416, 453, 297, , 301
ESP10, 293, 324, 369, 414, 451, 299, , 303
ESP10, 297, 337, 375, 419, 454, 302, , 306
ESP10, 297, 338, 377, 420, 453, 304, , 308
ESP10, 292, 335, 374, 416, 450, 306, , 310
ESP10, 301, 343, 381, 422, 454, 308, , 312
ESP10, 300, 347, 380, 425, 453, 311, , 315
ESP10, 308, 353, 384, 430, 457, 313, , 317
ESP10, 315, 351, 383, 432, 455, 315, , 319
ESP10, 319, 353, 385, 434, 456, 317, , 321
ESP10, 321, 359, 389, 435, 458, 320, , 324
ESP10, 322, 360, 391, 437, 459, 322, , 326
ESP10, 325, 363, 392, 437, 459, 324, , 328
ESP10, 330, 366, 393, 439, 460, 326, , 330
ESP10, 331, 366, 393, 439, 461, 328, , 332
ESP10, 334, 367, 392, 439, 461, 331, , 335
ESP10, 336, 372, 393, 438, 461, 333, , 337
ESP10, 344, 377, 397, 442, 462, 335, , 339
ESP10, 348, 376, 395, 445, 461, 337, , 341
ESP10, 345, 373, 398, 446, 459, 340, , 344
ESP10, 346, 374, 404, 447, 460, 342, , 346
ESP10, 336, 364, 396, 440, 455, 344, , 348
ESP10, 337, 366, 399, 441, 457, 346, , 350
ESP10, 342, 368, 400, 441, 457, 348, , 352
ESP10, 345, 374, 403, 443, 458, 351, , 355
ESP10, 348, 378, 410, 444, 459, 353, , 357
ESP10, 347, 377, 413, 445, 459, 355, , 359
ESP10, 354, 375, 408, 442, 456, 357, , 361
ESP10, 347, 367, 401, 434, 451, 360, , 364
ESP10, 344, 369, 399, 432, 450, 362, , 366
ESP10, 348, 372, 404, 435, 456, 364, , 368
ESP10, 349, 378, 407, 437, 457, 366, , 370
ESP10, 359, 388, 416, 447, 463, 368, , 372
ESP10, 359, 389, 419, 448, 464, 371, , 375
ESP10, 356, 386, 416, 444, 463, 373, , 377
ESP10, 349, 377, 410, 440, 461, 375, , 379
ESP10, 343, 375, 403, 433, 457, 377, , 381
ESP10, 352, 385, 412, 442, 462, 380, , 384
ESP10, 352, 381, 410, 439, 460, 382, , 386
ESP10, 347, 378, 410, 436, 456, 384, , 388
ESP10, 362, 394, 427, 449, 465, 386, , 390
ESP10, 359, 391, 423, 446, 461, 389, , 393
ESP10, 360, 394, 422, 448, 461, 391, , 395
ESP10, 360, 393, 419, 449, 460, 393, , 397
ESP10, 359, 392, 422, 450, 459, 395, , 399
ESP10, 356, 389, 418, 446, 456, 397, , 401
ESP10, 347, 381, 413, 438, 449, 400, , 404
ESP10, 340, 372, 410, 430, 442, 402, , 406
ESP10, 353, 386, 421, 440, 452, 404, , 408
ESP10, 352, 390, 420, 441, 452, 406, , 410
ESP10, 357, 395, 426, 445, 456, 409, , 413
ESP10, 354, 393, 425, 445, 454, 411, , 415
ESP10, 361, 398, 432, 448, 457, 413, , 417
ESP10, 355, 395, 428, 443, 454, 415, , 419
ESP10, 355, 395, 428, 444, 453, 417, , 421
ESP10, 353, 394, 425, 443, 450, 420, , 424
ESP10, 354, 396, 427, 444, 453, 422, , 426
ESP10, 361, 404, 437, 450, 461, 424, , 428
ESP10, 360, 398, 432, 447, 458, 426, , 430
ESP10, 354, 396, 426, 441, 452, 429, , 433
ESP10, 365, 406, 435, 452, 463, 431, , 435
ESP10, 366, 411, 438, 455, 465, 433, , 437
ESP10, 372, 414, 444, 459, 466, 435, , 439
ESP10, 373, 416, 446, 460, 467, 438, , 442
ESP10, 374, 416, 445, 459, 469, 440, , 444
ESP10, 381, 421, 449, 463, 472, 442, , 446
ESP10, 389, 426, 452, 467, 474, 444, , 448
ESP10, 393, 428, 453, 469, 474, 446, , 450
ESP10, 399, 428, 455, 469, 474, 449, , 453
ESP10, 403, 428, 455, 471, 478, 451, , 455
ESP10, 407, 428, 452, 470, 476, 453, , 457
ESP10, 398, 419, 444, 461, 469, 455, , 459
ESP10, 393, 414, 440, 455, 466, 458, , 462
ESP10, 395, 414, 440, 456, 466, 460, , 464
ESP10, 399, 417, 441, 461, 468, 462, , 466
ESP10, 398, 418, 439, 461, 470, 464, , 468
ESP10, 398, 419, 442, 462, 471, 466, , 470
ESP10, 395, 419, 445, 460, 469, 469, , 473
ESP10, 399, 420, 444, 460, 469, 471, , 475
ESP10, 396, 417, 440, 458, 466, 473, , 477
ESP10, 395, 416, 440, 459, 464, 475, , 479
ESP10, 400, 420, 447, 461, 466, 478, , 482
ESP10, 396, 413, 441, 454, 463, 480, , 484
ESP10, 399, 416, 445, 459, 468, 482, , 486
ESP10, 409, 424, 450, 465, 473, 484, , 488
ESP10, 406, 421, 447, 463, 472, 486, , 490
ESP10, 411, 423, 450, 468, 476, 489, , 493
ESP10, 415, 429, 454, 470, 477, 491, , 495
ESP10, 414, 432, 453, 468, 478, 493, , 497
ESP10, 417, 434, 453, 468, 479, 495, , 499
ESP10, 414, 430, 449, 466, 477, 498, , 502
ESP10, 422, 438, 460, 473, 481, 500, , 504
ESP10, 411, 430, 451, 467, 477, 502, , 506
ESP10, 417, 437, 458, 472, 480, 504, , 508
ESP10, 424, 443, 465, 475, 481, 507, , 511
ESP10, 431, 449, 472, 480, 483, 509, , 513
ESP10, 434, 447, 472, 480, 483, 511, , 515
ESP10, 440, 448, 474, 481, 485, 513, , 517
ESP10, 436, 447, 470, 478, 482, 515, , 519
ESP10, 438, 453, 472, 479, 484, 518, , 522
ESP10, 437, 452, 471, 479, 483, 520, , 524
ESP10, 459, 474, 488, 494, 497, 522, , 526
ESP10, 460, 477, 490, 495, 499, 524, , 528
ESP10, 455, 473, 489, 493, 497, 527, , 531
ESP10, 460, 472, 488, 495, 497, 529, , 533
ESP10, 458, 471, 485, 492, 494, 531, , 535
ESP10, 465, 477, 489, 495, 498, 533, , 537
ESP10, 468, 482, 493, 497, 501, 535, , 539
ESP10, 471, 485, 494, 498, 503, 538, , 542
ESP10, 474, 485, 494, 499, 503, 540, , 544
ESP10, 475, 486, 496, 500, 505, 542, , 546
ESP10, 476, 486, 496, 500, 504, 544, , 548
ESP10, 479, 487, 496, 500, 504, 547, , 551
ESP10, 481, 486, 495, 500, 503, 549, , 553
ESP10, 484, 490, 497, 502, 505, 551, , 555
ESP10, 483, 489, 496, 501, 503, 553, , 557
ESP10, 486, 491, 499, 504, 506, 555, , 559
ESP10, 489, 494, 502, 507, 508, 558, , 562
ESP10, 488, 493, 502, 506, 508, 560, , 564
ESP10, 491, 494, 502, 506, 509, 562, , 566
ESP10, 493, 496, 504, 508, 510, 564, , 568
ESP10, 496, 500, 508, 510, 513, 567, , 571
ESP10, 495, 497, 506, 509, 511, 569, , 573
ESP10, 499, 501, 509, 512, 513, 571, , 575
ESP10, 500, 503, 510, 512, 514, 573, , 577
ESP10, 502, 506, 512, 513, 515, 576, , 580
ESP10, 501, 505, 512, 514, 515, 578, , 582
ESP10, 500, 506, 512, 514, 515, 580, , 584
ESP10, 502, 509, 514, 515, 517, 582, , 586
ESP10, 502, 508, 512, 514, 515, 584, , 588
ESP10, 501, 508, 511, 513, 514, 587, , 591
ESP10, 501, 508, 511, 513, 514, 589, , 593
ESP10, 501, 508, 512, 513, 514, 591, , 595
ESP10, 506, 511, 513, 515, 516, 593, , 597
ESP10, 507, 510, 513, 515, 515, 596, , 600
ESP10, 507, 510, 514, 515, 516, 598, , 602
ESP10, 505, 508, 511, 513, 513, 600, , 604
ESP10, 507, 509, 512, 513, 514, 602, , 606
ESP10, 503, 505, 508, 509, 509, 604, , 608
ESP10, 505, 507, 509, 510, 511, 607, , 611
ESP10, 504, 507, 508, 509, 510, 609, , 613
ESP10, 504, 507, 509, 510, 510, 611, , 615
ESP10, 504, 508, 509, 509, 510, 613, , 617
ESP10, 504, 508, 509, 510, 510, 616, , 620
ESP10, 505, 508, 509, 510, 510, 618, , 622
ESP10, 503, 507, 508, 509, 509, 620, , 624
ESP10, 506, 508, 509, 510, 510, 622, , 626
ESP10, 510, 511, 513, 513, 514, 624, , 628
ESP10, 510, 511, 512, 513, 513, 627, , 631
ESP10, 509, 511, 512, 513, 513, 629, , 633
ESP10, 509, 511, 512, 512, 513, 631, , 635
ESP10, 508, 510, 511, 512, 512, 633, , 637
ESP10, 509, 511, 512, 513, 513, 636, , 640
ESP10, 509, 511, 512, 512, 513, 638, , 642
ESP10, 507, 509, 511, 511, 511, 640, , 644
ESP10, 508, 510, 511, 512, 512, 642, , 646
ESP10, 508, 510, 511, 512, 512, 645, , 649
ESP10, 491, 493, 495, 495, 496, 647, , 651
ESP10, 489, 491, 492, 493, 494, 649, , 653
ESP10, 489, 491, 493, 494, 494, 651, , 655
ESP10, 488, 490, 492, 493, 493, 653, , 657
ESP10, 487, 489, 491, 492, 492, 656, , 660
ESP10, 489, 491, 493, 493, 494, 658, , 662
ESP10, 501, 502, 502, 503, 503, 660, , 664
ESP10, 501, 502, 503, 503, 503, 662, , 666
ESP10, 501, 502, 503, 503, 503, 665, , 669
ESP10, 501, 502, 503, 503, 503, 667, , 671
ESP10, 501, 502, 503, 503, 503, 669, , 673
ESP10, 500, 501, 502, 502, 503, 671, , 675
ESP10, 486, 487, 489, 490, 490, 673, , 677
ESP10, 498, 498, 500, 500, 501, 676, , 680
ESP10, 497, 498, 499, 499, 499, 678, , 682
ESP10, 496, 498, 499, 499, 499, 680, , 684
ESP10, 494, 495, 497, 497, 498, 682, , 686
ESP10, 494, 495, 497, 497, 498, 685, , 689
ESP10, 493, 495, 496, 497, 497, 687, , 691
ESP10, 494, 496, 497, 497, 498, 689, , 693
ESP10, 493, 495, 496, 497, 497, 691, , 695
ESP10, 492, 494, 495, 496, 497, 693, , 697
ESP10, 492, 494, 495, 496, 496, 696, , 700
ESP10, 492, 494, 496, 496, 497, 698, , 702
ESP10, 493, 495, 497, 497, 498, 700, , 704
ESP10, 492, 494, 495, 496, 496, 702, , 706
ESP10, 492, 493, 494, 495, 496, 705, , 709
ESP10, 493, 494, 495, 496, 497, 707, , 711
ESP10, 491, 492, 493, 494, 494, 709, , 713
ESP10, 490, 492, 493, 493, 494, 711, , 715
ESP10, 491, 492, 493, 494, 494, 714, , 718
ESP10, 491, 492, 493, 493, 494, 716, , 720
ESP10, 491, 492, 492, 493, 494, 718, , 722
ESP10, 490, 491, 492, 493, 493, 720, , 724
ESP10, 490, 491, 492, 493, 493, 722, , 726
ESP10, 489, 490, 491, 492, 492, 725, , 729
ESP10, 489, 489, 490, 491, 491, 727, , 731
ESP10, 489, 490, 490, 491, 491, 729, , 733
ESP10, 489, 489, 490, 491, 491, 731, , 735
ESP10, 492, 493, 493, 494, 494, 734, , 738
Max Scale
Scale To Data
Scale To Last 45 Days
Show Min/Max Ensemble Volume
Show Tooltips Help
Overlay
ESP10
HEFS
ESP0
Data Files
/chpsesp/ensemble/watersupply/AMFI1W_SQIN.ESPF10.csv
AMFI1W_SQIN.ESPF0.csv|2026-07-27
AMFI1W_SQIN.ESPF10.csv|2026-07-27
AMFI1W_SQIN.ESPFM.csv|2026-07-27
APR-SEP
SNAKE - AT AMERICAN FALLS DAM
(
AMFI1
)
Forecasts for Water Year
2027
Official Water Supply
ESP with 10 Days QPF
Ensemble:
2026-07-27
Issued:
2026-07-27
Hide Forecast
Forecast
Period
Forecasts Are in KAF
30 Year
Average
(1991-2020)
90 %
50 %
%
Average
10 %
APR-SEP
1545
2507
96
5317
2624
APR-JUL
1270
2209
87
4603
2529
APR-AUG
1405
2355
93
5034
2531
JAN-SEP
2492
3573
95
6442
3745
JAN-JUL
2215
3292
90
5728
3651
OCT-SEP
3451
4638
95
7513
4883
Move the mouse over the desired "Forecast Period" to display a graph.
Max Scale
Scale To Data
Scale To Last 45 Days
Show Min/Max Ensemble Volume
Show Tooltips Help
Overlay
ESP10
Data Files
/chpsesp/ensemble/watersupply/AMFI1W_SQIN.ESPF10.csv
AMFI1W_SQIN.ESPF0.csv|2026-07-27
AMFI1W_SQIN.ESPF10.csv|2026-07-27
AMFI1W_SQIN.ESPFM.csv|2026-07-27
APR-SEP
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ESP10,ESPM,ESP0
ESP10,ESPM,ESP0
Last Forecast
