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Water Year
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YAKIMA - AT KIONA
(
KIOW1
)
Forecasts for Water Year
2026
Official Water Supply
ESP with 10 Days QPF
Ensemble:
2026-08-15
Issued:
2026-08-15
Hide Forecast
Forecast
Period
Forecasts Are in KAF
30 Year
Average
(1991-2020)
90 %
50 %
%
Average
10 %
APR-SEP
670
673
59
683
1149
APR-JUL
490
490
52
490
952
APR-AUG
569
570
55
570
1043
JAN-SEP
1768
1770
89
1781
1982
JAN-JUL
1588
1588
89
1588
1785
OCT-SEP
2583
2586
103
2596
2516
Experimental Water Supply
HEFS with 15 days EQPF
Ensemble:
2026-08-15
Issued:
2026-08-15
Hide Forecast
APR-SEP
670
673
59
682
1149
APR-JUL
490
490
52
490
952
APR-AUG
568
569
55
570
1043
JAN-SEP
1768
1770
89
1780
1982
JAN-JUL
1588
1588
89
1588
1785
OCT-SEP
2583
2585
103
2595
2516
Reference
ESP with 0 Days QPF
Ensemble:
2026-08-15
Issued:
2026-08-15
Hide Forecast
APR-SEP
705
708
62
718
1149
APR-JUL
490
490
52
490
952
APR-AUG
576
578
55
580
1043
JAN-SEP
1803
1806
91
1816
1982
JAN-JUL
1588
1588
89
1588
1785
OCT-SEP
2618
2621
104
2631
2516
Move the mouse over the desired "Forecast Period" to display a graph.
ESP10, 311, 367, 409, 440, 484, 70, , 74
ESP10, 310, 366, 409, 440, 483, 72, , 76
ESP10, 312, 367, 410, 443, 484, 74, , 78
ESP10, 311, 367, 412, 443, 484, 76, , 80
ESP10, 312, 368, 414, 445, 484, 78, , 82
ESP10, 311, 367, 414, 444, 484, 81, , 85
ESP10, 311, 365, 414, 441, 482, 83, , 87
ESP10, 311, 365, 414, 442, 483, 85, , 89
ESP10, 311, 365, 414, 445, 482, 87, , 91
ESP10, 308, 362, 411, 441, 480, 89, , 93
ESP10, 309, 363, 416, 443, 481, 91, , 95
ESP10, 307, 361, 413, 439, 479, 93, , 97
ESP10, 310, 361, 415, 439, 480, 95, , 99
ESP10, 309, 359, 413, 438, 479, 97, , 101
ESP10, 307, 356, 409, 433, 477, 99, , 103
ESP10, 296, 346, 397, 424, 470, 102, , 106
ESP10, 286, 339, 388, 419, 465, 104, , 108
ESP10, 295, 345, 394, 424, 468, 106, , 110
ESP10, 298, 349, 397, 427, 470, 108, , 112
ESP10, 299, 350, 401, 428, 471, 110, , 114
ESP10, 288, 341, 389, 419, 464, 112, , 116
ESP10, 297, 347, 397, 426, 468, 114, , 118
ESP10, 289, 337, 389, 420, 464, 116, , 120
ESP10, 298, 349, 403, 429, 469, 118, , 122
ESP10, 297, 350, 405, 429, 470, 120, , 124
ESP10, 295, 350, 403, 428, 467, 122, , 126
ESP10, 300, 351, 403, 429, 469, 125, , 129
ESP10, 305, 351, 404, 430, 471, 127, , 131
ESP10, 301, 347, 403, 426, 469, 129, , 133
ESP10, 290, 336, 396, 419, 465, 131, , 135
ESP10, 283, 328, 391, 415, 461, 133, , 137
ESP10, 284, 328, 391, 417, 461, 135, , 139
ESP10, 279, 325, 388, 418, 458, 137, , 141
ESP10, 293, 338, 399, 429, 464, 139, , 143
ESP10, 298, 339, 401, 433, 466, 141, , 145
ESP10, 298, 340, 401, 434, 467, 143, , 147
ESP10, 299, 341, 400, 433, 468, 145, , 149
ESP10, 304, 340, 400, 433, 467, 148, , 152
ESP10, 305, 340, 402, 435, 468, 150, , 154
ESP10, 304, 339, 402, 434, 470, 152, , 156
ESP10, 308, 347, 408, 438, 472, 154, , 158
ESP10, 317, 357, 416, 446, 476, 156, , 160
ESP10, 313, 356, 418, 446, 474, 158, , 162
ESP10, 323, 365, 427, 451, 479, 160, , 164
ESP10, 323, 364, 426, 452, 480, 162, , 166
ESP10, 325, 364, 425, 453, 481, 164, , 168
ESP10, 322, 361, 425, 451, 481, 166, , 170
ESP10, 329, 370, 429, 457, 483, 169, , 173
ESP10, 325, 375, 429, 455, 482, 171, , 175
ESP10, 327, 377, 432, 456, 483, 173, , 177
ESP10, 329, 373, 428, 453, 480, 175, , 179
ESP10, 328, 372, 426, 455, 481, 177, , 181
ESP10, 323, 374, 424, 456, 483, 179, , 183
ESP10, 334, 383, 431, 464, 488, 181, , 185
ESP10, 330, 380, 427, 464, 487, 183, , 187
ESP10, 341, 390, 433, 470, 491, 185, , 189
ESP10, 340, 386, 430, 467, 489, 187, , 191
ESP10, 340, 384, 427, 465, 488, 189, , 193
ESP10, 341, 386, 430, 467, 489, 192, , 196
ESP10, 327, 375, 415, 455, 479, 194, , 198
ESP10, 323, 373, 410, 450, 475, 196, , 200
ESP10, 331, 382, 420, 458, 478, 198, , 202
ESP10, 320, 375, 412, 451, 471, 200, , 204
ESP10, 301, 359, 398, 444, 462, 202, , 206
ESP10, 298, 362, 397, 444, 466, 204, , 208
ESP10, 294, 362, 399, 442, 464, 206, , 210
ESP10, 307, 373, 416, 450, 472, 208, , 212
ESP10, 301, 367, 412, 446, 467, 210, , 214
ESP10, 299, 362, 399, 435, 462, 212, , 216
ESP10, 290, 358, 388, 426, 455, 215, , 219
ESP10, 281, 349, 387, 427, 451, 217, , 221
ESP10, 271, 340, 377, 419, 449, 219, , 223
ESP10, 269, 338, 379, 419, 448, 221, , 225
ESP10, 279, 346, 387, 424, 452, 223, , 227
ESP10, 288, 349, 390, 425, 454, 225, , 229
ESP10, 289, 350, 393, 429, 456, 227, , 231
ESP10, 283, 339, 384, 421, 448, 229, , 233
ESP10, 287, 341, 388, 424, 447, 231, , 235
ESP10, 294, 351, 394, 428, 451, 233, , 237
ESP10, 291, 346, 385, 419, 444, 236, , 240
ESP10, 302, 359, 397, 432, 452, 238, , 242
ESP10, 304, 362, 398, 434, 452, 240, , 244
ESP10, 307, 365, 404, 437, 456, 242, , 246
ESP10, 312, 370, 412, 442, 458, 244, , 248
ESP10, 308, 370, 408, 441, 455, 246, , 250
ESP10, 301, 364, 400, 433, 449, 248, , 252
ESP10, 311, 370, 408, 437, 454, 250, , 254
ESP10, 319, 370, 408, 437, 455, 252, , 256
ESP10, 323, 375, 413, 441, 457, 254, , 258
ESP10, 321, 370, 410, 439, 454, 256, , 260
ESP10, 325, 375, 413, 441, 455, 259, , 263
ESP10, 327, 373, 413, 439, 454, 261, , 265
ESP10, 323, 370, 407, 435, 451, 263, , 267
ESP10, 325, 370, 408, 434, 452, 265, , 269
ESP10, 322, 366, 409, 431, 450, 267, , 271
ESP10, 320, 367, 412, 430, 450, 269, , 273
ESP10, 319, 372, 410, 429, 449, 271, , 275
ESP10, 321, 372, 412, 429, 451, 273, , 277
ESP10, 327, 375, 416, 431, 455, 275, , 279
ESP10, 327, 378, 417, 430, 457, 277, , 281
ESP10, 328, 380, 418, 432, 458, 279, , 283
ESP10, 333, 387, 420, 434, 458, 282, , 286
ESP10, 335, 388, 419, 433, 460, 284, , 288
ESP10, 337, 389, 418, 436, 459, 286, , 290
ESP10, 359, 411, 439, 456, 475, 288, , 292
ESP10, 341, 392, 422, 439, 457, 290, , 294
ESP10, 340, 389, 420, 436, 454, 292, , 296
ESP10, 343, 396, 422, 438, 457, 294, , 298
ESP10, 349, 402, 424, 440, 462, 296, , 300
ESP10, 355, 411, 428, 446, 470, 298, , 302
ESP10, 358, 412, 428, 447, 467, 300, , 304
ESP10, 363, 413, 430, 454, 468, 303, , 307
ESP10, 365, 413, 432, 457, 471, 305, , 309
ESP10, 372, 422, 438, 463, 473, 307, , 311
ESP10, 374, 425, 443, 464, 476, 309, , 313
ESP10, 365, 418, 436, 459, 473, 311, , 315
ESP10, 366, 423, 438, 459, 474, 313, , 317
ESP10, 366, 427, 439, 460, 477, 315, , 319
ESP10, 368, 430, 444, 461, 478, 317, , 321
ESP10, 368, 430, 447, 461, 478, 319, , 323
ESP10, 373, 430, 448, 463, 478, 321, , 325
ESP10, 377, 428, 445, 462, 477, 323, , 327
ESP10, 373, 423, 441, 461, 473, 326, , 330
ESP10, 373, 423, 442, 462, 472, 328, , 332
ESP10, 375, 425, 444, 464, 474, 330, , 334
ESP10, 374, 426, 443, 464, 475, 332, , 336
ESP10, 371, 422, 443, 464, 473, 334, , 338
ESP10, 385, 430, 448, 468, 478, 336, , 340
ESP10, 385, 426, 445, 464, 477, 338, , 342
ESP10, 392, 436, 447, 469, 480, 340, , 344
ESP10, 395, 439, 451, 470, 482, 342, , 346
ESP10, 397, 440, 452, 475, 482, 344, , 348
ESP10, 387, 431, 446, 471, 476, 346, , 350
ESP10, 394, 431, 445, 471, 477, 349, , 353
ESP10, 393, 431, 448, 471, 476, 351, , 355
ESP10, 388, 424, 445, 465, 472, 353, , 357
ESP10, 389, 424, 445, 464, 471, 355, , 359
ESP10, 396, 426, 448, 467, 474, 357, , 361
ESP10, 382, 410, 436, 455, 463, 359, , 363
ESP10, 391, 418, 444, 465, 471, 361, , 365
ESP10, 384, 416, 441, 460, 466, 363, , 367
ESP10, 391, 424, 444, 464, 470, 365, , 369
ESP10, 392, 423, 442, 461, 470, 367, , 371
ESP10, 400, 429, 445, 465, 473, 370, , 374
ESP10, 406, 433, 451, 470, 478, 372, , 376
ESP10, 408, 439, 453, 470, 480, 374, , 378
ESP10, 408, 441, 454, 469, 480, 376, , 380
ESP10, 410, 439, 452, 468, 479, 378, , 382
ESP10, 410, 437, 455, 465, 479, 380, , 384
ESP10, 410, 435, 456, 463, 477, 382, , 386
ESP10, 411, 439, 458, 464, 478, 384, , 388
ESP10, 409, 435, 456, 463, 477, 386, , 390
ESP10, 403, 427, 449, 457, 473, 388, , 392
ESP10, 389, 416, 438, 449, 464, 390, , 394
ESP10, 388, 413, 433, 443, 459, 393, , 397
ESP10, 385, 409, 429, 441, 456, 395, , 399
ESP10, 380, 408, 427, 438, 454, 397, , 401
ESP10, 371, 400, 417, 430, 446, 399, , 403
ESP10, 359, 393, 408, 420, 435, 401, , 405
ESP10, 366, 400, 415, 427, 442, 403, , 407
ESP10, 368, 400, 415, 430, 441, 405, , 409
ESP10, 362, 393, 410, 427, 435, 407, , 411
ESP10, 372, 401, 412, 432, 441, 409, , 413
ESP10, 373, 398, 413, 431, 444, 411, , 415
ESP10, 376, 397, 411, 430, 445, 413, , 417
ESP10, 371, 391, 407, 424, 439, 416, , 420
ESP10, 378, 393, 410, 424, 440, 418, , 422
ESP10, 395, 406, 423, 439, 458, 420, , 424
ESP10, 397, 408, 423, 439, 457, 422, , 426
ESP10, 398, 411, 424, 440, 455, 424, , 428
ESP10, 395, 408, 423, 436, 451, 426, , 430
ESP10, 390, 402, 417, 430, 442, 428, , 432
ESP10, 389, 401, 414, 425, 440, 430, , 434
ESP10, 383, 395, 409, 419, 435, 432, , 436
ESP10, 387, 400, 414, 423, 438, 434, , 438
ESP10, 396, 404, 414, 425, 435, 437, , 441
ESP10, 379, 383, 395, 409, 419, 439, , 443
ESP10, 385, 393, 405, 416, 427, 441, , 445
ESP10, 390, 399, 409, 419, 432, 443, , 447
ESP10, 384, 395, 405, 413, 428, 445, , 449
ESP10, 387, 399, 408, 416, 431, 447, , 451
ESP10, 389, 402, 412, 419, 435, 449, , 453
ESP10, 399, 411, 422, 431, 444, 451, , 455
ESP10, 400, 415, 425, 433, 445, 453, , 457
ESP10, 401, 413, 424, 435, 443, 455, , 459
ESP10, 402, 415, 425, 435, 443, 457, , 461
ESP10, 416, 427, 437, 444, 453, 460, , 464
ESP10, 426, 438, 445, 452, 459, 462, , 466
ESP10, 423, 436, 442, 449, 458, 464, , 468
ESP10, 424, 436, 443, 450, 458, 466, , 470
ESP10, 425, 436, 442, 449, 457, 468, , 472
ESP10, 428, 439, 446, 453, 460, 470, , 474
ESP10, 429, 440, 447, 454, 461, 472, , 476
ESP10, 428, 441, 448, 453, 460, 474, , 478
ESP10, 427, 440, 446, 451, 457, 476, , 480
ESP10, 427, 439, 445, 449, 455, 478, , 482
ESP10, 427, 437, 444, 449, 453, 480, , 484
ESP10, 425, 435, 440, 445, 448, 483, , 487
ESP10, 425, 434, 440, 445, 448, 485, , 489
ESP10, 424, 434, 439, 444, 447, 487, , 491
ESP10, 439, 446, 452, 455, 457, 489, , 493
ESP10, 436, 447, 451, 454, 456, 491, , 495
ESP10, 429, 440, 443, 446, 448, 493, , 497
ESP10, 428, 438, 441, 444, 446, 495, , 499
ESP10, 410, 420, 425, 429, 432, 497, , 501
ESP10, 410, 421, 425, 430, 433, 499, , 503
ESP10, 408, 418, 422, 427, 429, 501, , 505
ESP10, 407, 415, 418, 422, 425, 504, , 508
ESP10, 408, 415, 417, 422, 425, 506, , 510
ESP10, 407, 412, 415, 420, 422, 508, , 512
ESP10, 407, 412, 415, 419, 422, 510, , 514
ESP10, 409, 414, 418, 422, 425, 512, , 516
ESP10, 413, 419, 424, 426, 429, 514, , 518
ESP10, 414, 421, 425, 428, 430, 516, , 520
ESP10, 418, 424, 428, 430, 433, 518, , 522
ESP10, 417, 423, 427, 429, 431, 520, , 524
ESP10, 415, 420, 424, 426, 428, 522, , 526
ESP10, 416, 421, 425, 427, 428, 524, , 528
ESP10, 427, 432, 437, 438, 440, 527, , 531
ESP10, 429, 434, 439, 441, 441, 529, , 533
ESP10, 427, 431, 436, 438, 439, 531, , 535
ESP10, 427, 432, 437, 438, 440, 533, , 537
ESP10, 426, 431, 436, 437, 438, 535, , 539
ESP10, 427, 431, 434, 436, 437, 537, , 541
ESP10, 424, 429, 432, 433, 435, 539, , 543
ESP10, 426, 431, 433, 435, 437, 541, , 545
ESP10, 435, 440, 442, 443, 445, 543, , 547
ESP10, 435, 439, 441, 442, 443, 545, , 549
ESP10, 437, 441, 443, 445, 445, 547, , 551
ESP10, 435, 439, 441, 443, 444, 550, , 554
ESP10, 435, 438, 441, 442, 443, 552, , 556
ESP10, 437, 439, 442, 443, 444, 554, , 558
ESP10, 433, 436, 438, 439, 440, 556, , 560
ESP10, 431, 434, 435, 437, 438, 558, , 562
ESP10, 431, 433, 435, 436, 437, 560, , 564
ESP10, 432, 434, 436, 437, 437, 562, , 566
ESP10, 433, 435, 437, 438, 438, 564, , 568
ESP10, 436, 437, 439, 440, 440, 566, , 570
ESP10, 441, 442, 444, 445, 445, 568, , 572
ESP10, 443, 444, 446, 447, 447, 571, , 575
ESP10, 444, 446, 448, 448, 449, 573, , 577
ESP10, 444, 446, 447, 448, 448, 575, , 579
ESP10, 445, 446, 447, 448, 449, 577, , 581
ESP10, 439, 441, 441, 442, 443, 579, , 583
ESP10, 434, 436, 437, 438, 438, 581, , 585
ESP10, 436, 438, 438, 439, 439, 583, , 587
ESP10, 438, 440, 440, 441, 442, 585, , 589
ESP10, 442, 443, 444, 445, 445, 587, , 591
ESP10, 439, 441, 442, 442, 443, 589, , 593
ESP10, 440, 442, 443, 443, 443, 591, , 595
ESP10, 440, 441, 442, 443, 443, 594, , 598
ESP10, 445, 447, 447, 448, 448, 596, , 600
ESP10, 443, 445, 445, 446, 446, 598, , 602
ESP10, 438, 440, 441, 441, 442, 600, , 604
ESP10, 438, 440, 441, 441, 442, 602, , 606
ESP10, 441, 443, 444, 444, 445, 604, , 608
ESP10, 442, 444, 444, 445, 445, 606, , 610
ESP10, 443, 445, 445, 446, 446, 608, , 612
ESP10, 442, 443, 444, 444, 445, 610, , 614
ESP10, 440, 442, 442, 443, 443, 612, , 616
ESP10, 439, 441, 441, 442, 442, 614, , 618
ESP10, 440, 441, 442, 442, 442, 617, , 621
ESP10, 443, 444, 445, 445, 446, 619, , 623
ESP10, 441, 443, 444, 444, 444, 621, , 625
ESP10, 441, 442, 443, 443, 444, 623, , 627
ESP10, 439, 440, 441, 441, 441, 625, , 629
ESP10, 440, 441, 442, 442, 442, 627, , 631
ESP10, 438, 439, 439, 440, 440, 629, , 633
ESP10, 438, 439, 440, 440, 440, 631, , 635
ESP10, 439, 440, 440, 440, 440, 633, , 637
ESP10, 440, 442, 442, 442, 442, 635, , 639
ESP10, 441, 442, 443, 443, 443, 638, , 642
ESP10, 440, 441, 442, 442, 442, 640, , 644
ESP10, 441, 442, 442, 443, 443, 642, , 646
ESP10, 441, 442, 443, 443, 443, 644, , 648
ESP10, 440, 441, 441, 441, 441, 646, , 650
ESP10, 440, 441, 442, 442, 442, 648, , 652
ESP10, 440, 441, 442, 442, 442, 650, , 654
ESP10, 442, 443, 444, 444, 444, 652, , 656
ESP10, 441, 442, 442, 442, 442, 654, , 658
ESP10, 441, 441, 442, 442, 442, 656, , 660
ESP10, 442, 443, 443, 443, 443, 658, , 662
ESP10, 443, 443, 444, 444, 444, 661, , 665
ESP10, 443, 443, 444, 444, 444, 663, , 667
ESP10, 443, 444, 444, 444, 445, 665, , 669
ESP10, 443, 444, 444, 444, 444, 667, , 671
ESP10, 443, 443, 444, 444, 444, 669, , 673
ESP10, 445, 446, 446, 446, 446, 671, , 675
ESP10, 446, 447, 447, 447, 447, 673, , 677
ESP10, 445, 446, 446, 446, 446, 675, , 679
ESP10, 437, 438, 438, 439, 439, 677, , 681
ESP10, 437, 438, 438, 439, 439, 679, , 683
ESP10, 438, 438, 439, 439, 439, 681, , 685
ESP10, 438, 438, 439, 439, 439, 684, , 688
ESP10, 437, 438, 439, 439, 439, 686, , 690
ESP10, 438, 439, 440, 440, 440, 688, , 692
ESP10, 441, 442, 442, 443, 443, 690, , 694
ESP10, 442, 442, 443, 443, 443, 692, , 696
ESP10, 441, 442, 442, 443, 443, 694, , 698
ESP10, 441, 442, 442, 442, 442, 696, , 700
ESP10, 441, 441, 442, 442, 442, 698, , 702
ESP10, 441, 441, 442, 442, 442, 700, , 704
ESP10, 441, 442, 442, 442, 443, 702, , 706
ESP10, 441, 442, 442, 443, 443, 705, , 709
ESP10, 441, 442, 442, 443, 443, 707, , 711
ESP10, 439, 440, 441, 441, 441, 709, , 713
ESP10, 439, 440, 440, 440, 440, 711, , 715
ESP10, 438, 439, 440, 440, 440, 713, , 717
ESP10, 443, 444, 445, 445, 445, 715, , 719
ESP10, 443, 444, 444, 445, 445, 717, , 721
ESP10, 443, 444, 445, 445, 445, 719, , 723
ESP10, 445, 446, 447, 447, 447, 721, , 725
ESP10, 446, 448, 448, 448, 448, 723, , 727
ESP10, 446, 447, 447, 447, 447, 725, , 729
ESP10, 442, 444, 444, 445, 445, 728, , 732
ESP10, 443, 445, 445, 445, 445, 730, , 734
ESP10, 448, 449, 450, 450, 450, 732, , 736
ESP10, 447, 449, 449, 449, 450, 734, , 738
Max Scale
Scale To Data
Scale To Last 45 Days
Show Min/Max Ensemble Volume
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ESP10
HEFS
ESP0
Data Files
/chpsesp/ensemble/watersupply/KIOW1W_SQIN.ESPF10.csv
KIOW1W_SQIN.ESPF0.csv|2026-08-15
KIOW1W_SQIN.ESPF10.csv|2026-08-15
KIOW1W_SQIN.ESPFM.csv|2026-08-15
APR-SEP
YAKIMA - AT KIONA
(
KIOW1
)
Forecasts for Water Year
2027
Official Water Supply
ESP with 10 Days QPF
Ensemble:
2026-08-15
Issued:
2026-08-15
Hide Forecast
Forecast
Period
Forecasts Are in KAF
30 Year
Average
(1991-2020)
90 %
50 %
%
Average
10 %
APR-SEP
540
979
85
1570
1149
APR-JUL
398
817
86
1391
952
APR-AUG
473
898
86
1476
1043
JAN-SEP
1076
1719
87
2537
1982
JAN-JUL
940
1557
87
2361
1785
OCT-SEP
1420
2208
88
3271
2516
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/KIOW1W_SQIN.ESPF10.csv
KIOW1W_SQIN.ESPF0.csv|2026-08-15
KIOW1W_SQIN.ESPF10.csv|2026-08-15
KIOW1W_SQIN.ESPFM.csv|2026-08-15
APR-SEP
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ESP10,ESPM,ESP0
ESP10,ESPM,ESP0
Last Forecast
