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Archive:
Water Year
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COLUMBIA - AT INTL BOUNDARY
(
CIBW1
)
Forecasts for Water Year
2026
Official Water Supply
ESP with 10 Days QPF
Ensemble:
2026-07-23
Issued:
2026-07-23
Hide Forecast
Forecast
Period
Forecasts Are in KAF
30 Year
Average
(1991-2020)
90 %
50 %
%
Average
10 %
APR-SEP
53649
54116
95
55195
56951
APR-JUL
47034
47034
97
47034
48307
APR-AUG
51169
51404
96
51847
53664
JAN-SEP
64518
64984
102
66063
63866
JAN-JUL
57902
57902
105
57902
55223
OCT-SEP
74050
74516
104
75595
71709
Experimental Water Supply
HEFS with 15 days EQPF
Ensemble:
2026-07-23
Issued:
2026-07-23
Hide Forecast
APR-SEP
53585
54171
95
55129
56951
APR-JUL
46972
47053
97
47113
48307
APR-AUG
51134
51364
96
51713
53664
JAN-SEP
64453
65039
102
65998
63866
JAN-JUL
57841
57922
105
57982
55223
OCT-SEP
73985
74571
104
75530
71709
Reference
ESP with 0 Days QPF
Ensemble:
2026-07-23
Issued:
2026-07-23
Hide Forecast
APR-SEP
53850
54434
96
55618
56951
APR-JUL
46951
47064
97
47199
48307
APR-AUG
51260
51492
96
52121
53664
JAN-SEP
64718
65303
102
66486
63866
JAN-JUL
57820
57933
105
58067
55223
OCT-SEP
74250
74835
104
76018
71709
Move the mouse over the desired "Forecast Period" to display a graph.
ESP10, 231, 298, 354, 407, 438, 70, , 74
ESP10, 226, 295, 349, 401, 432, 73, , 77
ESP10, 229, 299, 353, 405, 438, 75, , 79
ESP10, 227, 299, 353, 403, 436, 77, , 81
ESP10, 226, 297, 352, 400, 433, 79, , 83
ESP10, 223, 294, 352, 397, 436, 82, , 86
ESP10, 227, 295, 353, 399, 443, 84, , 88
ESP10, 231, 300, 358, 400, 444, 86, , 90
ESP10, 232, 303, 362, 400, 445, 88, , 92
ESP10, 232, 305, 360, 398, 444, 91, , 95
ESP10, 235, 309, 360, 401, 445, 93, , 97
ESP10, 234, 309, 360, 400, 444, 95, , 99
ESP10, 228, 302, 353, 394, 439, 97, , 101
ESP10, 230, 304, 355, 401, 442, 100, , 104
ESP10, 232, 303, 353, 400, 442, 102, , 106
ESP10, 220, 293, 342, 390, 434, 104, , 108
ESP10, 211, 285, 333, 381, 424, 106, , 110
ESP10, 221, 296, 345, 391, 435, 109, , 113
ESP10, 221, 295, 345, 393, 436, 111, , 115
ESP10, 220, 293, 348, 399, 440, 113, , 117
ESP10, 210, 286, 347, 390, 431, 115, , 119
ESP10, 210, 287, 344, 390, 429, 118, , 122
ESP10, 204, 288, 339, 386, 430, 120, , 124
ESP10, 211, 297, 351, 397, 437, 122, , 126
ESP10, 216, 301, 356, 399, 440, 124, , 128
ESP10, 222, 309, 360, 402, 445, 127, , 131
ESP10, 224, 314, 360, 402, 446, 129, , 133
ESP10, 225, 320, 360, 403, 446, 131, , 135
ESP10, 215, 311, 351, 396, 437, 133, , 137
ESP10, 199, 298, 339, 383, 427, 136, , 140
ESP10, 201, 301, 344, 386, 433, 138, , 142
ESP10, 205, 302, 347, 392, 439, 140, , 144
ESP10, 200, 299, 344, 389, 438, 142, , 146
ESP10, 210, 310, 352, 397, 446, 145, , 149
ESP10, 219, 312, 356, 398, 447, 147, , 151
ESP10, 222, 313, 356, 398, 445, 149, , 153
ESP10, 223, 312, 355, 396, 446, 151, , 155
ESP10, 217, 302, 349, 387, 438, 154, , 158
ESP10, 225, 309, 359, 393, 444, 156, , 160
ESP10, 224, 307, 358, 389, 440, 158, , 162
ESP10, 227, 306, 358, 390, 438, 160, , 164
ESP10, 228, 306, 357, 392, 435, 163, , 167
ESP10, 240, 317, 366, 400, 442, 165, , 169
ESP10, 251, 323, 370, 401, 447, 167, , 171
ESP10, 244, 315, 360, 390, 437, 170, , 174
ESP10, 253, 319, 365, 395, 442, 172, , 176
ESP10, 246, 310, 357, 395, 437, 174, , 178
ESP10, 253, 315, 363, 399, 447, 176, , 180
ESP10, 248, 311, 357, 395, 442, 179, , 183
ESP10, 251, 313, 360, 395, 445, 181, , 185
ESP10, 255, 317, 360, 394, 445, 183, , 187
ESP10, 254, 317, 356, 390, 443, 185, , 189
ESP10, 251, 316, 360, 388, 439, 188, , 192
ESP10, 259, 328, 369, 399, 445, 190, , 194
ESP10, 253, 324, 364, 398, 441, 192, , 196
ESP10, 255, 323, 360, 396, 442, 194, , 198
ESP10, 254, 319, 357, 393, 442, 197, , 201
ESP10, 255, 318, 359, 395, 443, 199, , 203
ESP10, 255, 321, 365, 399, 444, 201, , 205
ESP10, 249, 311, 351, 389, 435, 203, , 207
ESP10, 236, 298, 339, 382, 424, 206, , 210
ESP10, 240, 301, 341, 383, 426, 208, , 212
ESP10, 236, 295, 337, 377, 420, 210, , 214
ESP10, 223, 276, 317, 358, 409, 212, , 216
ESP10, 224, 277, 325, 361, 414, 215, , 219
ESP10, 220, 274, 319, 356, 411, 217, , 221
ESP10, 226, 281, 327, 364, 418, 219, , 223
ESP10, 212, 264, 312, 349, 404, 221, , 225
ESP10, 181, 236, 282, 319, 377, 224, , 228
ESP10, 173, 230, 272, 309, 371, 226, , 230
ESP10, 173, 236, 272, 309, 373, 228, , 232
ESP10, 180, 249, 280, 318, 383, 230, , 234
ESP10, 182, 250, 283, 322, 390, 233, , 237
ESP10, 176, 241, 276, 315, 383, 235, , 239
ESP10, 180, 238, 285, 313, 381, 237, , 241
ESP10, 186, 238, 288, 316, 382, 239, , 243
ESP10, 188, 239, 293, 319, 384, 242, , 246
ESP10, 186, 239, 291, 316, 381, 244, , 248
ESP10, 180, 232, 281, 308, 372, 246, , 250
ESP10, 185, 229, 273, 303, 367, 248, , 252
ESP10, 197, 237, 282, 309, 373, 251, , 255
ESP10, 201, 235, 282, 307, 372, 253, , 257
ESP10, 213, 245, 292, 317, 383, 255, , 259
ESP10, 218, 247, 296, 324, 386, 257, , 261
ESP10, 213, 239, 290, 320, 382, 260, , 264
ESP10, 209, 235, 286, 319, 379, 262, , 266
ESP10, 213, 241, 286, 321, 380, 264, , 268
ESP10, 218, 245, 289, 325, 387, 267, , 271
ESP10, 215, 249, 288, 323, 385, 269, , 273
ESP10, 219, 251, 293, 323, 387, 271, , 275
ESP10, 224, 262, 302, 328, 389, 273, , 277
ESP10, 223, 260, 298, 327, 386, 276, , 280
ESP10, 220, 255, 294, 322, 385, 278, , 282
ESP10, 221, 258, 298, 324, 390, 280, , 284
ESP10, 211, 252, 292, 317, 384, 282, , 286
ESP10, 210, 252, 292, 320, 383, 285, , 289
ESP10, 210, 250, 291, 318, 380, 287, , 291
ESP10, 209, 252, 287, 320, 378, 289, , 293
ESP10, 211, 254, 285, 318, 375, 291, , 295
ESP10, 212, 250, 281, 315, 371, 294, , 298
ESP10, 209, 247, 282, 316, 368, 296, , 300
ESP10, 210, 245, 283, 319, 370, 298, , 302
ESP10, 210, 243, 283, 319, 366, 300, , 304
ESP10, 208, 243, 281, 316, 363, 303, , 307
ESP10, 208, 247, 281, 314, 362, 305, , 309
ESP10, 209, 250, 283, 315, 361, 307, , 311
ESP10, 212, 255, 283, 314, 361, 309, , 313
ESP10, 213, 257, 286, 315, 361, 312, , 316
ESP10, 214, 262, 287, 315, 363, 314, , 318
ESP10, 225, 272, 296, 321, 368, 316, , 320
ESP10, 231, 278, 301, 328, 370, 318, , 322
ESP10, 236, 282, 306, 333, 376, 321, , 325
ESP10, 235, 283, 306, 333, 376, 323, , 327
ESP10, 239, 287, 314, 335, 380, 325, , 329
ESP10, 238, 287, 316, 335, 380, 327, , 331
ESP10, 236, 283, 311, 331, 375, 330, , 334
ESP10, 240, 287, 312, 337, 378, 332, , 336
ESP10, 241, 290, 313, 339, 379, 334, , 338
ESP10, 242, 292, 313, 340, 378, 336, , 340
ESP10, 240, 295, 315, 341, 377, 339, , 343
ESP10, 241, 293, 315, 340, 376, 341, , 345
ESP10, 234, 282, 305, 330, 369, 343, , 347
ESP10, 227, 274, 297, 325, 361, 345, , 349
ESP10, 234, 277, 301, 329, 364, 348, , 352
ESP10, 244, 279, 302, 328, 366, 350, , 354
ESP10, 248, 277, 303, 327, 365, 352, , 356
ESP10, 245, 274, 301, 323, 360, 354, , 358
ESP10, 255, 286, 307, 331, 367, 357, , 361
ESP10, 256, 285, 305, 331, 363, 359, , 363
ESP10, 254, 284, 305, 330, 360, 361, , 365
ESP10, 256, 289, 311, 332, 361, 364, , 368
ESP10, 257, 291, 315, 335, 362, 366, , 370
ESP10, 252, 285, 308, 331, 356, 368, , 372
ESP10, 257, 288, 311, 336, 358, 370, , 374
ESP10, 255, 288, 308, 337, 354, 373, , 377
ESP10, 243, 276, 297, 328, 342, 375, , 379
ESP10, 242, 277, 296, 329, 344, 377, , 381
ESP10, 247, 282, 304, 334, 349, 379, , 383
ESP10, 241, 271, 295, 324, 340, 382, , 386
ESP10, 252, 278, 303, 330, 349, 384, , 388
ESP10, 247, 272, 297, 321, 345, 386, , 390
ESP10, 253, 279, 303, 326, 350, 388, , 392
ESP10, 248, 274, 298, 323, 346, 391, , 395
ESP10, 254, 279, 305, 328, 352, 393, , 397
ESP10, 257, 281, 306, 330, 353, 395, , 399
ESP10, 264, 282, 307, 331, 356, 397, , 401
ESP10, 264, 284, 307, 330, 355, 400, , 404
ESP10, 258, 280, 301, 322, 349, 402, , 406
ESP10, 256, 276, 296, 316, 343, 404, , 408
ESP10, 250, 268, 287, 305, 332, 406, , 410
ESP10, 250, 271, 290, 309, 331, 409, , 413
ESP10, 245, 266, 286, 305, 326, 411, , 415
ESP10, 237, 261, 282, 300, 318, 413, , 417
ESP10, 234, 256, 280, 295, 315, 415, , 419
ESP10, 231, 253, 275, 289, 310, 418, , 422
ESP10, 231, 258, 272, 287, 309, 420, , 424
ESP10, 221, 249, 261, 275, 297, 422, , 426
ESP10, 226, 251, 264, 277, 299, 424, , 428
ESP10, 209, 233, 248, 262, 285, 427, , 431
ESP10, 224, 246, 260, 275, 297, 429, , 433
ESP10, 223, 245, 260, 277, 297, 431, , 435
ESP10, 217, 241, 255, 271, 291, 433, , 437
ESP10, 211, 236, 250, 270, 285, 436, , 440
ESP10, 219, 245, 258, 278, 292, 438, , 442
ESP10, 215, 240, 252, 273, 289, 440, , 444
ESP10, 215, 236, 248, 268, 285, 442, , 446
ESP10, 214, 233, 243, 262, 282, 445, , 449
ESP10, 216, 237, 244, 262, 283, 447, , 451
ESP10, 213, 232, 243, 260, 280, 449, , 453
ESP10, 215, 231, 243, 261, 282, 452, , 456
ESP10, 215, 230, 242, 260, 279, 454, , 458
ESP10, 221, 236, 249, 264, 285, 456, , 460
ESP10, 225, 236, 250, 264, 285, 458, , 462
ESP10, 218, 228, 243, 256, 277, 461, , 465
ESP10, 215, 225, 238, 254, 274, 463, , 467
ESP10, 216, 228, 243, 260, 277, 465, , 469
ESP10, 218, 230, 247, 261, 280, 467, , 471
ESP10, 220, 232, 250, 267, 283, 470, , 474
ESP10, 224, 239, 255, 273, 287, 472, , 476
ESP10, 229, 241, 258, 277, 291, 474, , 478
ESP10, 237, 248, 266, 285, 298, 476, , 480
ESP10, 237, 254, 267, 286, 299, 479, , 483
ESP10, 236, 253, 266, 282, 297, 481, , 485
ESP10, 240, 257, 274, 288, 303, 483, , 487
ESP10, 240, 257, 277, 292, 304, 485, , 489
ESP10, 236, 253, 274, 289, 301, 488, , 492
ESP10, 234, 253, 272, 288, 300, 490, , 494
ESP10, 236, 258, 276, 293, 303, 492, , 496
ESP10, 234, 256, 273, 292, 302, 494, , 498
ESP10, 231, 249, 267, 285, 295, 497, , 501
ESP10, 226, 245, 266, 281, 292, 499, , 503
ESP10, 225, 244, 266, 279, 290, 501, , 505
ESP10, 231, 249, 272, 285, 297, 503, , 507
ESP10, 236, 252, 273, 288, 300, 506, , 510
ESP10, 234, 254, 270, 285, 295, 508, , 512
ESP10, 241, 264, 274, 290, 302, 510, , 514
ESP10, 241, 262, 273, 288, 300, 512, , 516
ESP10, 244, 263, 276, 290, 304, 515, , 519
ESP10, 242, 257, 272, 285, 300, 517, , 521
ESP10, 242, 260, 276, 289, 302, 519, , 523
ESP10, 244, 264, 279, 293, 305, 521, , 525
ESP10, 245, 265, 281, 296, 306, 524, , 528
ESP10, 245, 266, 282, 297, 306, 526, , 530
ESP10, 254, 276, 293, 306, 316, 528, , 532
ESP10, 252, 273, 291, 304, 315, 530, , 534
ESP10, 252, 275, 292, 306, 318, 533, , 537
ESP10, 251, 276, 290, 305, 317, 535, , 539
ESP10, 250, 276, 288, 302, 314, 537, , 541
ESP10, 252, 280, 292, 304, 316, 539, , 543
ESP10, 250, 280, 291, 303, 314, 542, , 546
ESP10, 251, 281, 291, 306, 315, 544, , 548
ESP10, 258, 286, 297, 312, 320, 546, , 550
ESP10, 262, 292, 302, 316, 323, 549, , 553
ESP10, 264, 292, 303, 317, 324, 551, , 555
ESP10, 265, 291, 305, 315, 323, 553, , 557
ESP10, 266, 288, 302, 314, 320, 555, , 559
ESP10, 270, 290, 304, 317, 322, 558, , 562
ESP10, 268, 288, 305, 316, 322, 560, , 564
ESP10, 266, 286, 302, 315, 324, 562, , 566
ESP10, 267, 285, 301, 314, 323, 564, , 568
ESP10, 268, 286, 301, 314, 322, 567, , 571
ESP10, 269, 284, 298, 313, 320, 569, , 573
ESP10, 265, 282, 298, 311, 317, 571, , 575
ESP10, 267, 282, 302, 310, 318, 573, , 577
ESP10, 266, 278, 299, 309, 316, 576, , 580
ESP10, 270, 279, 300, 309, 318, 578, , 582
ESP10, 268, 278, 298, 309, 317, 580, , 584
ESP10, 270, 283, 301, 311, 318, 582, , 586
ESP10, 271, 286, 303, 313, 322, 585, , 589
ESP10, 275, 290, 307, 318, 327, 587, , 591
ESP10, 270, 286, 302, 312, 323, 589, , 593
ESP10, 268, 283, 298, 309, 318, 591, , 595
ESP10, 272, 286, 301, 308, 318, 594, , 598
ESP10, 268, 284, 297, 304, 313, 596, , 600
ESP10, 270, 286, 298, 306, 314, 598, , 602
ESP10, 266, 281, 295, 301, 309, 600, , 604
ESP10, 265, 278, 293, 301, 308, 603, , 607
ESP10, 268, 282, 293, 303, 309, 605, , 609
ESP10, 271, 284, 295, 305, 313, 607, , 611
ESP10, 263, 276, 288, 298, 305, 609, , 613
ESP10, 271, 279, 292, 302, 309, 612, , 616
ESP10, 270, 276, 290, 300, 308, 614, , 618
ESP10, 270, 277, 289, 299, 309, 616, , 620
ESP10, 271, 279, 291, 304, 311, 618, , 622
ESP10, 272, 278, 287, 303, 311, 621, , 625
ESP10, 274, 281, 290, 302, 311, 623, , 627
ESP10, 279, 289, 297, 309, 316, 625, , 629
ESP10, 282, 292, 299, 312, 320, 627, , 631
ESP10, 284, 294, 301, 313, 321, 630, , 634
ESP10, 280, 293, 300, 312, 318, 632, , 636
ESP10, 289, 302, 311, 321, 327, 634, , 638
ESP10, 289, 303, 313, 322, 327, 636, , 640
ESP10, 300, 310, 319, 329, 334, 639, , 643
ESP10, 300, 307, 317, 327, 330, 641, , 645
ESP10, 300, 308, 317, 326, 330, 643, , 647
ESP10, 302, 310, 319, 328, 332, 646, , 650
ESP10, 303, 312, 320, 329, 333, 648, , 652
ESP10, 300, 310, 319, 326, 331, 650, , 654
ESP10, 300, 310, 320, 326, 331, 652, , 656
ESP10, 303, 314, 323, 330, 334, 655, , 659
ESP10, 304, 316, 325, 332, 335, 657, , 661
ESP10, 302, 315, 324, 330, 334, 659, , 663
ESP10, 303, 317, 325, 331, 335, 661, , 665
ESP10, 299, 312, 320, 327, 334, 664, , 668
ESP10, 312, 322, 331, 336, 344, 666, , 670
ESP10, 311, 322, 329, 337, 342, 668, , 672
ESP10, 312, 323, 330, 336, 343, 670, , 674
ESP10, 307, 316, 325, 331, 337, 673, , 677
ESP10, 307, 318, 326, 330, 337, 675, , 679
ESP10, 304, 316, 324, 327, 334, 677, , 681
ESP10, 309, 320, 328, 332, 338, 679, , 683
ESP10, 314, 322, 331, 335, 340, 682, , 686
ESP10, 313, 320, 328, 333, 337, 684, , 688
ESP10, 315, 320, 329, 334, 337, 686, , 690
ESP10, 314, 319, 329, 334, 336, 688, , 692
ESP10, 317, 323, 333, 337, 340, 691, , 695
ESP10, 325, 330, 337, 340, 343, 693, , 697
ESP10, 326, 329, 337, 340, 343, 695, , 699
ESP10, 327, 331, 337, 340, 343, 697, , 701
ESP10, 327, 331, 336, 340, 342, 700, , 704
ESP10, 327, 332, 338, 342, 343, 702, , 706
ESP10, 327, 333, 338, 341, 342, 704, , 708
ESP10, 326, 332, 337, 341, 342, 706, , 710
ESP10, 325, 330, 335, 339, 340, 709, , 713
ESP10, 324, 330, 334, 338, 339, 711, , 715
ESP10, 326, 332, 336, 340, 341, 713, , 717
ESP10, 325, 332, 337, 339, 341, 715, , 719
ESP10, 326, 332, 336, 338, 341, 718, , 722
ESP10, 327, 332, 337, 339, 341, 720, , 724
ESP10, 327, 333, 337, 339, 341, 722, , 726
ESP10, 326, 333, 336, 339, 342, 724, , 728
ESP10, 327, 332, 337, 339, 341, 727, , 731
ESP10, 327, 332, 336, 339, 341, 729, , 733
ESP10, 326, 332, 336, 338, 341, 731, , 735
ESP10, 327, 332, 337, 338, 340, 733, , 737
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/CIBW1W_SQIN.ESPF10.csv
CIBW1W_SQIN.ESPF0.csv|2026-07-23
CIBW1W_SQIN.ESPF10.csv|2026-07-23
CIBW1W_SQIN.ESPFM.csv|2026-07-23
APR-SEP
COLUMBIA - AT INTL BOUNDARY
(
CIBW1
)
Forecasts for Water Year
2027
Official Water Supply
ESP with 10 Days QPF
Ensemble:
2026-07-23
Issued:
2026-07-23
Hide Forecast
Forecast
Period
Forecasts Are in KAF
30 Year
Average
(1991-2020)
90 %
50 %
%
Average
10 %
APR-SEP
43560
54414
96
71075
56951
APR-JUL
35993
44589
92
59421
48307
APR-AUG
40280
50691
94
67320
53664
JAN-SEP
48722
60060
94
76778
63866
JAN-JUL
40575
52008
94
65337
55223
OCT-SEP
54742
68264
95
83602
71709
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/CIBW1W_SQIN.ESPF10.csv
CIBW1W_SQIN.ESPF0.csv|2026-07-23
CIBW1W_SQIN.ESPF10.csv|2026-07-23
CIBW1W_SQIN.ESPFM.csv|2026-07-23
APR-SEP
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ESP10,ESPM,ESP0
ESP10,ESPM,ESP0
Last Forecast
