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Archive:
Water Year
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COLUMBIA - WANAPUM DAM
(
WANW1
)
Forecasts for Water Year
2026
Natural Forecast
ESP with 10 Days QPF
Ensemble:
2026-04-12
Issued:
2026-04-12
Hide Forecast
Forecast
Period
Forecasts Are in KAF
30 Year
Average
(1991-2020)
90 %
50 %
%
Average
10 %
APR-SEP
67915
71885
105
78713
68222
APR-JUL
54367
57688
100
64282
57709
JAN-SEP
82004
85974
110
92802
77881
JAN-JUL
68456
71777
107
78371
67367
OCT-SEP
93772
97742
111
104569
87958
Experimental
HEFS with 15 days EQPF
Ensemble:
2026-04-12
Issued:
2026-04-12
Hide Forecast
APR-SEP
67044
71601
105
77123
68222
APR-JUL
53251
57539
100
62829
57709
JAN-SEP
81132
85690
110
91212
77881
JAN-JUL
67339
71628
106
76918
67367
OCT-SEP
92900
97458
111
102979
87958
Reference
ESP with 0 Days QPF
Ensemble:
2026-04-12
Issued:
2026-04-12
Hide Forecast
APR-SEP
66257
70901
104
76365
68222
APR-JUL
52367
56904
99
62138
57709
JAN-SEP
80346
84990
109
90453
77881
JAN-JUL
66456
70993
105
76227
67367
OCT-SEP
92114
96757
110
102221
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, 75, , 79
ESP10, 222, 298, 351, 407, 436, 78, , 82
ESP10, 221, 298, 352, 405, 434, 82, , 86
ESP10, 222, 298, 353, 402, 432, 85, , 89
ESP10, 220, 296, 352, 398, 431, 89, , 93
ESP10, 225, 299, 353, 401, 436, 92, , 96
ESP10, 229, 302, 358, 402, 436, 95, , 99
ESP10, 230, 305, 359, 402, 437, 99, , 103
ESP10, 227, 307, 356, 400, 436, 102, , 106
ESP10, 227, 312, 359, 401, 437, 106, , 110
ESP10, 225, 312, 358, 402, 436, 109, , 113
ESP10, 219, 307, 352, 397, 432, 113, , 117
ESP10, 221, 308, 354, 401, 434, 116, , 120
ESP10, 221, 306, 351, 399, 434, 120, , 124
ESP10, 208, 297, 337, 389, 424, 123, , 127
ESP10, 198, 286, 329, 380, 414, 126, , 130
ESP10, 209, 296, 342, 393, 425, 130, , 134
ESP10, 210, 298, 346, 395, 428, 133, , 137
ESP10, 210, 299, 346, 397, 431, 137, , 141
ESP10, 200, 291, 337, 387, 421, 140, , 144
ESP10, 201, 291, 336, 391, 420, 144, , 148
ESP10, 194, 288, 331, 386, 420, 147, , 151
ESP10, 202, 297, 343, 392, 429, 150, , 154
ESP10, 207, 302, 348, 401, 432, 154, , 158
ESP10, 211, 308, 352, 406, 436, 157, , 161
ESP10, 213, 306, 352, 406, 436, 161, , 165
ESP10, 215, 308, 351, 406, 436, 164, , 168
ESP10, 205, 300, 343, 399, 428, 168, , 172
ESP10, 189, 287, 330, 387, 417, 171, , 175
ESP10, 188, 286, 332, 386, 421, 175, , 179
ESP10, 194, 292, 338, 388, 428, 178, , 182
ESP10, 190, 288, 337, 387, 427, 181, , 185
ESP10, 202, 299, 345, 400, 437, 185, , 189
ESP10, 208, 303, 347, 402, 438, 188, , 192
ESP10, 211, 303, 347, 400, 436, 192, , 196
ESP10, 213, 302, 346, 398, 437, 195, , 199
ESP10, 210, 295, 344, 389, 430, 199, , 203
ESP10, 216, 301, 351, 395, 438, 202, , 206
ESP10, 213, 300, 352, 390, 437, 205, , 209
ESP10, 214, 302, 351, 392, 438, 209, , 213
ESP10, 219, 302, 349, 396, 438, 212, , 216
ESP10, 230, 307, 361, 402, 445, 216, , 220
ESP10, 243, 312, 365, 403, 450, 219, , 223
ESP10, 237, 307, 357, 396, 441, 223, , 227
ESP10, 246, 312, 363, 402, 445, 226, , 230
ESP10, 238, 304, 354, 395, 439, 229, , 233
ESP10, 246, 310, 363, 400, 450, 233, , 237
ESP10, 241, 304, 358, 401, 446, 236, , 240
ESP10, 245, 310, 364, 402, 450, 240, , 244
ESP10, 246, 310, 364, 400, 448, 243, , 247
ESP10, 247, 315, 359, 399, 444, 247, , 251
ESP10, 244, 317, 357, 396, 439, 250, , 254
ESP10, 254, 326, 367, 407, 447, 254, , 258
ESP10, 250, 322, 362, 407, 444, 257, , 261
ESP10, 253, 318, 359, 408, 444, 260, , 264
ESP10, 251, 314, 355, 403, 439, 264, , 268
ESP10, 251, 312, 355, 403, 439, 267, , 271
ESP10, 252, 313, 361, 408, 441, 271, , 275
ESP10, 243, 303, 351, 400, 431, 274, , 278
ESP10, 232, 293, 341, 389, 421, 278, , 282
ESP10, 236, 294, 343, 392, 423, 281, , 285
ESP10, 229, 284, 337, 385, 414, 284, , 288
ESP10, 214, 262, 321, 365, 402, 288, , 292
ESP10, 214, 264, 326, 365, 407, 291, , 295
ESP10, 209, 261, 320, 360, 405, 295, , 299
ESP10, 220, 272, 330, 372, 419, 298, , 302
ESP10, 203, 257, 315, 358, 404, 302, , 306
ESP10, 176, 229, 286, 329, 377, 305, , 309
ESP10, 167, 227, 278, 319, 368, 309, , 313
ESP10, 167, 230, 280, 319, 369, 312, , 316
ESP10, 173, 242, 288, 326, 377, 315, , 319
ESP10, 174, 242, 293, 328, 378, 319, , 323
ESP10, 168, 234, 287, 321, 373, 322, , 326
ESP10, 174, 231, 290, 322, 372, 326, , 330
ESP10, 182, 231, 293, 322, 374, 329, , 333
ESP10, 184, 230, 299, 322, 377, 333, , 337
ESP10, 182, 226, 296, 318, 374, 336, , 340
ESP10, 178, 225, 291, 313, 368, 339, , 343
ESP10, 181, 227, 283, 307, 362, 343, , 347
ESP10, 194, 236, 289, 314, 367, 346, , 350
ESP10, 200, 234, 287, 312, 365, 350, , 354
ESP10, 213, 245, 298, 324, 376, 353, , 357
ESP10, 218, 249, 301, 333, 380, 357, , 361
ESP10, 213, 241, 296, 329, 375, 360, , 364
ESP10, 209, 236, 291, 327, 373, 363, , 367
ESP10, 211, 240, 293, 328, 376, 367, , 371
ESP10, 216, 245, 297, 332, 390, 370, , 374
ESP10, 212, 243, 293, 331, 388, 374, , 378
ESP10, 217, 246, 297, 332, 388, 377, , 381
ESP10, 224, 260, 304, 338, 390, 381, , 385
ESP10, 222, 257, 304, 335, 386, 384, , 388
ESP10, 215, 251, 303, 329, 382, 388, , 392
ESP10, 216, 254, 304, 331, 386, 391, , 395
ESP10, 207, 250, 297, 325, 380, 394, , 398
ESP10, 206, 262, 298, 329, 381, 398, , 402
ESP10, 206, 262, 301, 329, 382, 401, , 405
ESP10, 206, 261, 299, 332, 380, 405, , 409
ESP10, 208, 263, 300, 331, 378, 408, , 412
ESP10, 212, 263, 295, 333, 375, 412, , 416
ESP10, 210, 261, 294, 332, 372, 415, , 419
ESP10, 211, 260, 295, 333, 372, 418, , 422
ESP10, 210, 258, 294, 331, 368, 422, , 426
ESP10, 207, 257, 292, 328, 365, 425, , 429
ESP10, 214, 261, 291, 327, 365, 429, , 433
ESP10, 215, 261, 292, 325, 363, 432, , 436
ESP10, 212, 264, 290, 323, 363, 436, , 440
ESP10, 213, 266, 292, 327, 363, 439, , 443
ESP10, 215, 267, 294, 327, 364, 443, , 447
ESP10, 226, 279, 302, 337, 371, 446, , 450
ESP10, 233, 284, 305, 339, 372, 449, , 453
ESP10, 239, 291, 312, 346, 378, 453, , 457
ESP10, 238, 293, 316, 348, 378, 456, , 460
ESP10, 242, 297, 321, 351, 382, 460, , 464
ESP10, 242, 296, 322, 352, 382, 463, , 467
ESP10, 238, 292, 317, 347, 375, 467, , 471
ESP10, 242, 296, 319, 352, 379, 470, , 474
ESP10, 243, 299, 321, 354, 380, 473, , 477
ESP10, 249, 301, 321, 356, 383, 477, , 481
ESP10, 248, 302, 321, 355, 385, 480, , 484
ESP10, 246, 302, 323, 354, 385, 484, , 488
ESP10, 240, 296, 314, 344, 380, 487, , 491
ESP10, 234, 289, 307, 336, 375, 491, , 495
ESP10, 243, 291, 310, 338, 378, 494, , 498
ESP10, 245, 291, 311, 339, 381, 497, , 501
ESP10, 243, 289, 311, 337, 379, 501, , 505
ESP10, 242, 286, 306, 334, 374, 504, , 508
ESP10, 251, 296, 316, 339, 381, 508, , 512
ESP10, 252, 294, 312, 339, 377, 511, , 515
ESP10, 250, 293, 313, 343, 375, 515, , 519
ESP10, 254, 296, 316, 344, 375, 518, , 522
ESP10, 258, 299, 322, 345, 374, 522, , 526
ESP10, 253, 293, 318, 337, 367, 525, , 529
ESP10, 256, 297, 320, 338, 369, 528, , 532
ESP10, 253, 298, 317, 338, 366, 532, , 536
ESP10, 241, 286, 303, 328, 352, 535, , 539
ESP10, 243, 286, 303, 329, 352, 539, , 543
ESP10, 249, 293, 311, 335, 358, 542, , 546
ESP10, 237, 281, 302, 323, 346, 546, , 550
ESP10, 249, 289, 314, 332, 357, 549, , 553
ESP10, 245, 284, 307, 327, 350, 552, , 556
ESP10, 253, 290, 313, 332, 357, 556, , 560
ESP10, 254, 287, 310, 331, 355, 559, , 563
ESP10, 266, 294, 317, 340, 363, 563, , 567
ESP10, 271, 296, 318, 343, 365, 566, , 570
ESP10, 275, 298, 320, 345, 367, 570, , 574
ESP10, 275, 299, 323, 344, 366, 573, , 577
ESP10, 270, 296, 316, 339, 361, 577, , 581
ESP10, 265, 292, 313, 332, 356, 580, , 584
ESP10, 258, 284, 306, 322, 346, 583, , 587
ESP10, 262, 288, 307, 323, 346, 587, , 591
ESP10, 260, 283, 305, 321, 341, 590, , 594
ESP10, 253, 277, 297, 313, 332, 594, , 598
ESP10, 248, 271, 296, 307, 328, 597, , 601
ESP10, 242, 267, 289, 301, 323, 601, , 605
ESP10, 241, 269, 285, 303, 321, 604, , 608
ESP10, 231, 259, 272, 293, 310, 607, , 611
ESP10, 234, 260, 273, 295, 312, 611, , 615
ESP10, 216, 245, 257, 278, 298, 614, , 618
ESP10, 233, 261, 274, 292, 311, 618, , 622
ESP10, 232, 262, 275, 292, 312, 621, , 625
ESP10, 227, 258, 270, 288, 308, 625, , 629
ESP10, 225, 253, 262, 283, 300, 628, , 632
ESP10, 230, 258, 268, 289, 306, 631, , 635
ESP10, 227, 253, 263, 284, 305, 635, , 639
ESP10, 224, 248, 260, 278, 302, 638, , 642
ESP10, 219, 243, 255, 272, 299, 642, , 646
ESP10, 221, 245, 258, 276, 301, 645, , 649
ESP10, 219, 243, 257, 278, 298, 649, , 653
ESP10, 223, 243, 258, 279, 300, 652, , 656
ESP10, 225, 242, 257, 276, 297, 656, , 660
ESP10, 232, 245, 261, 278, 301, 659, , 663
ESP10, 231, 244, 259, 275, 298, 662, , 666
ESP10, 221, 237, 251, 268, 289, 666, , 670
ESP10, 217, 235, 250, 266, 286, 669, , 673
ESP10, 221, 240, 256, 273, 292, 673, , 677
ESP10, 220, 242, 256, 274, 292, 676, , 680
ESP10, 222, 246, 261, 278, 296, 680, , 684
ESP10, 224, 251, 265, 284, 300, 683, , 687
ESP10, 228, 255, 270, 288, 303, 686, , 690
ESP10, 236, 261, 276, 297, 309, 690, , 694
ESP10, 238, 264, 276, 297, 310, 693, , 697
ESP10, 237, 264, 276, 295, 309, 697, , 701
ESP10, 241, 270, 283, 299, 315, 700, , 704
ESP10, 239, 269, 286, 301, 315, 704, , 708
ESP10, 236, 266, 284, 300, 315, 707, , 711
ESP10, 237, 268, 284, 302, 315, 711, , 715
ESP10, 239, 274, 290, 305, 318, 714, , 718
ESP10, 238, 273, 287, 303, 317, 717, , 721
ESP10, 234, 267, 280, 297, 309, 721, , 725
ESP10, 231, 264, 278, 294, 305, 724, , 728
ESP10, 230, 264, 278, 294, 305, 728, , 732
ESP10, 234, 268, 283, 300, 311, 731, , 735
Max Scale
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Scale To Last 45 Days
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ESP10
HEFS
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Data Files
/chpsesp/ensemble/natural/WANW1N_SQIN.ESPF10.csv
WANW1N_SQIN.ESPF0.csv|2026-04-12
WANW1N_SQIN.ESPF10.csv|2026-04-12
WANW1N_SQIN.ESPFM.csv|2026-04-12
APR-SEP
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ESP10,ESPM,ESP0
ESP10,ESPM,ESP0
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