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Water Year
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COLUMBIA - WANAPUM DAM
(
WANW1
)
Forecasts for Water Year
2026
Natural Forecast
ESP with 10 Days QPF
Ensemble:
2026-05-12
Issued:
2026-05-12
Hide Forecast
Forecast
Period
Forecasts Are in KAF
30 Year
Average
(1991-2020)
90 %
50 %
%
Average
10 %
APR-SEP
64547
67032
98
71131
68222
APR-JUL
51867
54178
94
57574
57709
JAN-SEP
78636
81121
104
85219
77881
JAN-JUL
65956
68267
101
71663
67367
OCT-SEP
90403
92888
106
96987
87958
Experimental
HEFS with 15 days EQPF
Ensemble:
2026-05-12
Issued:
2026-05-12
Hide Forecast
APR-SEP
65032
68015
100
73129
68222
APR-JUL
52688
55374
96
59903
57709
JAN-SEP
79121
82103
105
87218
77881
JAN-JUL
66776
69463
103
73992
67367
OCT-SEP
90889
93871
107
98985
87958
Reference
ESP with 0 Days QPF
Ensemble:
2026-05-12
Issued:
2026-05-12
Hide Forecast
APR-SEP
64866
68204
100
74218
68222
APR-JUL
52504
55289
96
60126
57709
JAN-SEP
78955
82293
106
88307
77881
JAN-JUL
66593
69378
103
74215
67367
OCT-SEP
90723
94061
107
100074
87958
Move the mouse over the desired "Forecast Period" to display a graph.
ESP10, 224, 297, 352, 409, 435, 71, , 75
ESP10, 219, 295, 346, 404, 431, 74, , 78
ESP10, 222, 298, 351, 407, 436, 77, , 81
ESP10, 221, 298, 352, 405, 434, 80, , 84
ESP10, 222, 298, 353, 402, 432, 83, , 87
ESP10, 220, 296, 352, 398, 431, 86, , 90
ESP10, 225, 299, 353, 401, 436, 89, , 93
ESP10, 229, 302, 358, 402, 436, 92, , 96
ESP10, 230, 305, 359, 402, 437, 95, , 99
ESP10, 227, 307, 356, 400, 436, 98, , 102
ESP10, 227, 312, 359, 401, 437, 101, , 105
ESP10, 225, 312, 358, 402, 436, 104, , 108
ESP10, 219, 307, 352, 397, 432, 107, , 111
ESP10, 221, 308, 354, 401, 434, 110, , 114
ESP10, 221, 306, 351, 399, 434, 113, , 117
ESP10, 208, 297, 337, 389, 424, 116, , 120
ESP10, 198, 286, 329, 380, 414, 119, , 123
ESP10, 209, 296, 342, 393, 425, 122, , 126
ESP10, 210, 298, 346, 395, 428, 125, , 129
ESP10, 210, 299, 346, 397, 431, 128, , 132
ESP10, 200, 291, 337, 387, 421, 131, , 135
ESP10, 201, 291, 336, 391, 420, 134, , 138
ESP10, 194, 288, 331, 386, 420, 136, , 140
ESP10, 202, 297, 343, 392, 429, 139, , 143
ESP10, 207, 302, 348, 401, 432, 142, , 146
ESP10, 211, 308, 352, 406, 436, 145, , 149
ESP10, 213, 306, 352, 406, 436, 148, , 152
ESP10, 215, 308, 351, 406, 436, 151, , 155
ESP10, 205, 300, 343, 399, 428, 154, , 158
ESP10, 189, 287, 330, 387, 417, 157, , 161
ESP10, 188, 286, 332, 386, 421, 160, , 164
ESP10, 194, 292, 338, 388, 428, 163, , 167
ESP10, 190, 288, 337, 387, 427, 166, , 170
ESP10, 202, 299, 345, 400, 437, 169, , 173
ESP10, 208, 303, 347, 402, 438, 172, , 176
ESP10, 211, 303, 347, 400, 436, 175, , 179
ESP10, 213, 302, 346, 398, 437, 178, , 182
ESP10, 210, 295, 344, 389, 430, 181, , 185
ESP10, 216, 301, 351, 395, 438, 184, , 188
ESP10, 213, 300, 352, 390, 437, 187, , 191
ESP10, 214, 302, 351, 392, 438, 190, , 194
ESP10, 219, 302, 349, 396, 438, 193, , 197
ESP10, 230, 307, 361, 402, 445, 196, , 200
ESP10, 243, 312, 365, 403, 450, 199, , 203
ESP10, 237, 307, 357, 396, 441, 202, , 206
ESP10, 246, 312, 363, 402, 445, 205, , 209
ESP10, 238, 304, 354, 395, 439, 208, , 212
ESP10, 246, 310, 363, 400, 450, 211, , 215
ESP10, 241, 304, 358, 401, 446, 214, , 218
ESP10, 245, 310, 364, 402, 450, 217, , 221
ESP10, 246, 310, 364, 400, 448, 220, , 224
ESP10, 247, 315, 359, 399, 444, 223, , 227
ESP10, 244, 317, 357, 396, 439, 226, , 230
ESP10, 254, 326, 367, 407, 447, 229, , 233
ESP10, 250, 322, 362, 407, 444, 232, , 236
ESP10, 253, 318, 359, 408, 444, 235, , 239
ESP10, 251, 314, 355, 403, 439, 238, , 242
ESP10, 251, 312, 355, 403, 439, 241, , 245
ESP10, 252, 313, 361, 408, 441, 244, , 248
ESP10, 243, 303, 351, 400, 431, 247, , 251
ESP10, 232, 293, 341, 389, 421, 250, , 254
ESP10, 236, 294, 343, 392, 423, 253, , 257
ESP10, 229, 284, 337, 385, 414, 256, , 260
ESP10, 214, 262, 321, 365, 402, 259, , 263
ESP10, 214, 264, 326, 365, 407, 262, , 266
ESP10, 209, 261, 320, 360, 405, 265, , 269
ESP10, 220, 272, 330, 372, 419, 268, , 272
ESP10, 203, 257, 315, 358, 404, 270, , 274
ESP10, 176, 229, 286, 329, 377, 273, , 277
ESP10, 167, 227, 278, 319, 368, 276, , 280
ESP10, 167, 230, 280, 319, 369, 279, , 283
ESP10, 173, 242, 288, 326, 377, 282, , 286
ESP10, 174, 242, 293, 328, 378, 285, , 289
ESP10, 168, 234, 287, 321, 373, 288, , 292
ESP10, 174, 231, 290, 322, 372, 291, , 295
ESP10, 182, 231, 293, 322, 374, 294, , 298
ESP10, 184, 230, 299, 322, 377, 297, , 301
ESP10, 182, 226, 296, 318, 374, 300, , 304
ESP10, 178, 225, 291, 313, 368, 303, , 307
ESP10, 181, 227, 283, 307, 362, 306, , 310
ESP10, 194, 236, 289, 314, 367, 309, , 313
ESP10, 200, 234, 287, 312, 365, 312, , 316
ESP10, 213, 245, 298, 324, 376, 315, , 319
ESP10, 218, 249, 301, 333, 380, 318, , 322
ESP10, 213, 241, 296, 329, 375, 321, , 325
ESP10, 209, 236, 291, 327, 373, 324, , 328
ESP10, 211, 240, 293, 328, 376, 327, , 331
ESP10, 216, 245, 297, 332, 390, 330, , 334
ESP10, 212, 243, 293, 331, 388, 333, , 337
ESP10, 217, 246, 297, 332, 388, 336, , 340
ESP10, 224, 260, 304, 338, 390, 339, , 343
ESP10, 222, 257, 304, 335, 386, 342, , 346
ESP10, 215, 251, 303, 329, 382, 345, , 349
ESP10, 216, 254, 304, 331, 386, 348, , 352
ESP10, 207, 250, 297, 325, 380, 351, , 355
ESP10, 206, 262, 298, 329, 381, 354, , 358
ESP10, 206, 262, 301, 329, 382, 357, , 361
ESP10, 206, 261, 299, 332, 380, 360, , 364
ESP10, 208, 263, 300, 331, 378, 363, , 367
ESP10, 212, 263, 295, 333, 375, 366, , 370
ESP10, 210, 261, 294, 332, 372, 369, , 373
ESP10, 211, 260, 295, 333, 372, 372, , 376
ESP10, 210, 258, 294, 331, 368, 375, , 379
ESP10, 207, 257, 292, 328, 365, 378, , 382
ESP10, 214, 261, 291, 327, 365, 381, , 385
ESP10, 215, 261, 292, 325, 363, 384, , 388
ESP10, 212, 264, 290, 323, 363, 387, , 391
ESP10, 213, 266, 292, 327, 363, 390, , 394
ESP10, 215, 267, 294, 327, 364, 393, , 397
ESP10, 226, 279, 302, 337, 371, 396, , 400
ESP10, 233, 284, 305, 339, 372, 399, , 403
ESP10, 239, 291, 312, 346, 378, 402, , 406
ESP10, 238, 293, 316, 348, 378, 404, , 408
ESP10, 242, 297, 321, 351, 382, 407, , 411
ESP10, 242, 296, 322, 352, 382, 410, , 414
ESP10, 238, 292, 317, 347, 375, 413, , 417
ESP10, 242, 296, 319, 352, 379, 416, , 420
ESP10, 243, 299, 321, 354, 380, 419, , 423
ESP10, 249, 301, 321, 356, 383, 422, , 426
ESP10, 248, 302, 321, 355, 385, 425, , 429
ESP10, 246, 302, 323, 354, 385, 428, , 432
ESP10, 240, 296, 314, 344, 380, 431, , 435
ESP10, 234, 289, 307, 336, 375, 434, , 438
ESP10, 243, 291, 310, 338, 378, 437, , 441
ESP10, 245, 291, 311, 339, 381, 440, , 444
ESP10, 243, 289, 311, 337, 379, 443, , 447
ESP10, 242, 286, 306, 334, 374, 446, , 450
ESP10, 251, 296, 316, 339, 381, 449, , 453
ESP10, 252, 294, 312, 339, 377, 452, , 456
ESP10, 250, 293, 313, 343, 375, 455, , 459
ESP10, 254, 296, 316, 344, 375, 458, , 462
ESP10, 258, 299, 322, 345, 374, 461, , 465
ESP10, 253, 293, 318, 337, 367, 464, , 468
ESP10, 256, 297, 320, 338, 369, 467, , 471
ESP10, 253, 298, 317, 338, 366, 470, , 474
ESP10, 241, 286, 303, 328, 352, 473, , 477
ESP10, 243, 286, 303, 329, 352, 476, , 480
ESP10, 249, 293, 311, 335, 358, 479, , 483
ESP10, 237, 281, 302, 323, 346, 482, , 486
ESP10, 249, 289, 314, 332, 357, 485, , 489
ESP10, 245, 284, 307, 327, 350, 488, , 492
ESP10, 253, 290, 313, 332, 357, 491, , 495
ESP10, 254, 287, 310, 331, 355, 494, , 498
ESP10, 266, 294, 317, 340, 363, 497, , 501
ESP10, 271, 296, 318, 343, 365, 500, , 504
ESP10, 275, 298, 320, 345, 367, 503, , 507
ESP10, 275, 299, 323, 344, 366, 506, , 510
ESP10, 270, 296, 316, 339, 361, 509, , 513
ESP10, 265, 292, 313, 332, 356, 512, , 516
ESP10, 258, 284, 306, 322, 346, 515, , 519
ESP10, 262, 288, 307, 323, 346, 518, , 522
ESP10, 260, 283, 305, 321, 341, 521, , 525
ESP10, 253, 277, 297, 313, 332, 524, , 528
ESP10, 248, 271, 296, 307, 328, 527, , 531
ESP10, 242, 267, 289, 301, 323, 530, , 534
ESP10, 241, 269, 285, 303, 321, 533, , 537
ESP10, 231, 259, 272, 293, 310, 536, , 540
ESP10, 234, 260, 273, 295, 312, 538, , 542
ESP10, 216, 245, 257, 278, 298, 541, , 545
ESP10, 233, 261, 274, 292, 311, 544, , 548
ESP10, 232, 262, 275, 292, 312, 547, , 551
ESP10, 227, 258, 270, 288, 308, 550, , 554
ESP10, 225, 253, 262, 283, 300, 553, , 557
ESP10, 230, 258, 268, 289, 306, 556, , 560
ESP10, 227, 253, 263, 284, 305, 559, , 563
ESP10, 224, 248, 260, 278, 302, 562, , 566
ESP10, 219, 243, 255, 272, 299, 565, , 569
ESP10, 221, 245, 258, 276, 301, 568, , 572
ESP10, 219, 243, 257, 278, 298, 571, , 575
ESP10, 223, 243, 258, 279, 300, 574, , 578
ESP10, 225, 242, 257, 276, 297, 577, , 581
ESP10, 232, 245, 261, 278, 301, 580, , 584
ESP10, 231, 244, 259, 275, 298, 583, , 587
ESP10, 221, 237, 251, 268, 289, 586, , 590
ESP10, 217, 235, 250, 266, 286, 589, , 593
ESP10, 221, 240, 256, 273, 292, 592, , 596
ESP10, 220, 242, 256, 274, 292, 595, , 599
ESP10, 222, 246, 261, 278, 296, 598, , 602
ESP10, 224, 251, 265, 284, 300, 601, , 605
ESP10, 228, 255, 270, 288, 303, 604, , 608
ESP10, 236, 261, 276, 297, 309, 607, , 611
ESP10, 238, 264, 276, 297, 310, 610, , 614
ESP10, 237, 264, 276, 295, 309, 613, , 617
ESP10, 241, 270, 283, 299, 315, 616, , 620
ESP10, 239, 269, 286, 301, 315, 619, , 623
ESP10, 236, 266, 284, 300, 315, 622, , 626
ESP10, 237, 268, 284, 302, 315, 625, , 629
ESP10, 239, 274, 290, 305, 318, 628, , 632
ESP10, 238, 273, 287, 303, 317, 631, , 635
ESP10, 234, 267, 280, 297, 309, 634, , 638
ESP10, 231, 264, 278, 294, 305, 637, , 641
ESP10, 230, 264, 278, 294, 305, 640, , 644
ESP10, 234, 268, 283, 300, 311, 643, , 647
ESP10, 239, 271, 285, 302, 313, 646, , 650
ESP10, 237, 273, 282, 300, 309, 649, , 653
ESP10, 246, 280, 287, 306, 315, 652, , 656
ESP10, 249, 277, 286, 304, 313, 655, , 659
ESP10, 252, 280, 290, 307, 315, 658, , 662
ESP10, 248, 274, 287, 303, 310, 661, , 665
ESP10, 250, 276, 290, 306, 312, 664, , 668
ESP10, 252, 278, 293, 308, 315, 667, , 671
ESP10, 254, 280, 295, 311, 318, 670, , 674
ESP10, 257, 282, 298, 315, 320, 672, , 676
ESP10, 266, 291, 307, 323, 331, 675, , 679
ESP10, 266, 289, 306, 321, 331, 678, , 682
ESP10, 268, 291, 307, 322, 332, 681, , 685
ESP10, 268, 294, 306, 321, 333, 684, , 688
ESP10, 266, 292, 305, 319, 332, 687, , 691
ESP10, 268, 298, 309, 321, 333, 690, , 694
ESP10, 266, 297, 309, 320, 332, 693, , 697
ESP10, 267, 298, 309, 320, 332, 696, , 700
ESP10, 273, 302, 313, 326, 337, 699, , 703
ESP10, 276, 306, 318, 329, 341, 702, , 706
ESP10, 277, 306, 319, 332, 341, 705, , 709
ESP10, 278, 305, 319, 332, 340, 708, , 712
ESP10, 280, 304, 318, 331, 337, 711, , 715
ESP10, 284, 304, 321, 333, 337, 714, , 718
ESP10, 283, 304, 321, 333, 338, 717, , 721
ESP10, 283, 302, 320, 332, 340, 720, , 724
ESP10, 284, 304, 320, 332, 340, 723, , 727
ESP10, 286, 305, 321, 333, 340, 726, , 730
ESP10, 287, 304, 318, 332, 338, 729, , 733
ESP10, 288, 304, 317, 329, 335, 732, , 736
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ESP10
HEFS
ESP0
Data Files
/chpsesp/ensemble/natural/WANW1N_SQIN.ESPF10.csv
WANW1N_SQIN.ESPF0.csv|2026-05-12
WANW1N_SQIN.ESPF10.csv|2026-05-12
WANW1N_SQIN.ESPFM.csv|2026-05-12
APR-SEP
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ESP10,ESPM,ESP0
ESP10,ESPM,ESP0
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