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Water Year
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COLUMBIA - WELLS DAM
(
WELW1
)
Forecasts for Water Year
2026
Natural Forecast
ESP with 10 Days QPF
Ensemble:
2026-05-08
Issued:
2026-05-08
Hide Forecast
Forecast
Period
Forecasts Are in KAF
30 Year
Average
(1991-2020)
90 %
50 %
%
Average
10 %
APR-SEP
61885
64650
99
69730
65328
APR-JUL
49858
52471
95
56656
55110
JAN-SEP
74797
77562
104
82641
74438
JAN-JUL
62769
65382
102
69567
64220
OCT-SEP
85300
88065
105
93144
83937
Experimental
HEFS with 15 days EQPF
Ensemble:
2026-05-08
Issued:
2026-05-08
Hide Forecast
APR-SEP
62881
65156
100
70409
65328
APR-JUL
51006
53327
97
57635
55110
JAN-SEP
75792
78067
105
83320
74438
JAN-JUL
63918
66238
103
70547
64220
OCT-SEP
86296
88570
106
93823
83937
Reference
ESP with 0 Days QPF
Ensemble:
2026-05-08
Issued:
2026-05-08
Hide Forecast
APR-SEP
62823
66186
101
71974
65328
APR-JUL
50639
53373
97
57965
55110
JAN-SEP
75735
79097
106
84885
74438
JAN-JUL
63550
66284
103
70877
64220
OCT-SEP
86238
89600
107
95388
83937
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ESP10, 229, 298, 352, 406, 435, 71, , 75
ESP10, 224, 295, 347, 402, 430, 74, , 78
ESP10, 227, 299, 352, 404, 435, 77, , 81
ESP10, 226, 301, 353, 402, 434, 80, , 84
ESP10, 226, 302, 353, 399, 431, 83, , 87
ESP10, 224, 300, 352, 398, 433, 86, , 90
ESP10, 229, 304, 353, 400, 438, 89, , 93
ESP10, 233, 307, 358, 401, 439, 92, , 96
ESP10, 234, 308, 359, 402, 440, 95, , 99
ESP10, 233, 310, 357, 401, 439, 98, , 102
ESP10, 233, 312, 359, 402, 440, 101, , 105
ESP10, 232, 312, 359, 403, 439, 104, , 108
ESP10, 226, 306, 352, 398, 435, 107, , 111
ESP10, 228, 309, 355, 402, 437, 110, , 114
ESP10, 228, 306, 353, 400, 437, 113, , 117
ESP10, 215, 295, 339, 387, 428, 117, , 121
ESP10, 205, 285, 329, 379, 417, 120, , 124
ESP10, 216, 295, 343, 389, 429, 123, , 127
ESP10, 216, 296, 348, 392, 431, 126, , 130
ESP10, 215, 296, 349, 395, 434, 129, , 133
ESP10, 205, 288, 342, 385, 425, 132, , 136
ESP10, 206, 287, 341, 393, 424, 135, , 139
ESP10, 199, 288, 335, 388, 424, 138, , 142
ESP10, 207, 298, 347, 394, 432, 141, , 145
ESP10, 212, 302, 351, 400, 435, 144, , 148
ESP10, 216, 314, 355, 406, 439, 147, , 151
ESP10, 219, 315, 356, 405, 440, 150, , 154
ESP10, 219, 314, 356, 406, 440, 153, , 157
ESP10, 209, 303, 347, 397, 432, 156, , 160
ESP10, 194, 289, 333, 384, 421, 159, , 163
ESP10, 193, 288, 337, 385, 425, 162, , 166
ESP10, 198, 292, 341, 389, 432, 165, , 169
ESP10, 195, 290, 340, 388, 431, 168, , 172
ESP10, 206, 302, 348, 397, 440, 171, , 175
ESP10, 215, 306, 350, 398, 441, 174, , 178
ESP10, 215, 306, 350, 398, 440, 177, , 181
ESP10, 217, 305, 350, 396, 440, 180, , 184
ESP10, 214, 295, 347, 388, 433, 183, , 187
ESP10, 221, 301, 353, 393, 440, 186, , 190
ESP10, 217, 302, 355, 391, 440, 189, , 193
ESP10, 221, 304, 355, 391, 441, 192, , 196
ESP10, 225, 304, 353, 395, 439, 195, , 199
ESP10, 235, 311, 362, 401, 445, 198, , 202
ESP10, 248, 317, 366, 402, 450, 201, , 205
ESP10, 241, 312, 358, 396, 441, 204, , 208
ESP10, 250, 316, 364, 400, 445, 207, , 211
ESP10, 242, 306, 356, 395, 440, 210, , 214
ESP10, 250, 312, 365, 399, 450, 214, , 218
ESP10, 245, 306, 361, 398, 446, 217, , 221
ESP10, 248, 309, 366, 399, 450, 220, , 224
ESP10, 251, 312, 365, 398, 449, 223, , 227
ESP10, 251, 318, 361, 397, 445, 226, , 230
ESP10, 248, 319, 360, 395, 441, 229, , 233
ESP10, 257, 327, 369, 406, 448, 232, , 236
ESP10, 253, 323, 364, 405, 444, 235, , 239
ESP10, 256, 320, 361, 405, 445, 238, , 242
ESP10, 254, 315, 356, 400, 440, 241, , 245
ESP10, 254, 313, 355, 402, 439, 244, , 248
ESP10, 255, 315, 362, 408, 440, 247, , 251
ESP10, 246, 303, 353, 398, 429, 250, , 254
ESP10, 235, 294, 343, 389, 419, 253, , 257
ESP10, 238, 295, 344, 392, 423, 256, , 260
ESP10, 232, 286, 338, 384, 415, 259, , 263
ESP10, 218, 263, 320, 366, 403, 262, , 266
ESP10, 219, 267, 325, 366, 408, 265, , 269
ESP10, 214, 264, 319, 360, 405, 268, , 272
ESP10, 224, 274, 329, 370, 418, 271, , 275
ESP10, 208, 260, 314, 356, 404, 274, , 278
ESP10, 180, 232, 285, 328, 377, 277, , 281
ESP10, 171, 227, 278, 318, 368, 280, , 284
ESP10, 171, 234, 280, 317, 371, 283, , 287
ESP10, 177, 246, 286, 324, 379, 286, , 290
ESP10, 178, 247, 291, 326, 381, 289, , 293
ESP10, 172, 238, 284, 320, 375, 292, , 296
ESP10, 177, 236, 290, 319, 373, 295, , 299
ESP10, 185, 236, 294, 320, 375, 298, , 302
ESP10, 186, 236, 298, 320, 378, 301, , 305
ESP10, 184, 232, 296, 317, 375, 304, , 308
ESP10, 181, 229, 289, 313, 369, 308, , 312
ESP10, 186, 230, 281, 309, 362, 311, , 315
ESP10, 198, 238, 287, 315, 367, 314, , 318
ESP10, 203, 237, 286, 314, 367, 317, , 321
ESP10, 215, 250, 298, 326, 378, 320, , 324
ESP10, 220, 254, 300, 330, 382, 323, , 327
ESP10, 215, 246, 296, 327, 377, 326, , 330
ESP10, 212, 241, 292, 328, 376, 329, , 333
ESP10, 214, 244, 294, 328, 377, 332, , 336
ESP10, 218, 247, 297, 331, 389, 335, , 339
ESP10, 214, 247, 292, 328, 387, 338, , 342
ESP10, 219, 250, 295, 330, 388, 341, , 345
ESP10, 226, 262, 303, 335, 389, 344, , 348
ESP10, 225, 260, 304, 332, 385, 347, , 351
ESP10, 218, 254, 302, 326, 382, 350, , 354
ESP10, 219, 259, 303, 328, 387, 353, , 357
ESP10, 210, 252, 295, 322, 381, 356, , 360
ESP10, 208, 263, 296, 325, 382, 359, , 363
ESP10, 210, 263, 299, 327, 383, 362, , 366
ESP10, 209, 261, 296, 329, 381, 365, , 369
ESP10, 211, 261, 296, 329, 379, 368, , 372
ESP10, 214, 261, 291, 329, 375, 371, , 375
ESP10, 212, 258, 290, 331, 372, 374, , 378
ESP10, 213, 257, 292, 331, 372, 377, , 381
ESP10, 213, 255, 290, 330, 369, 380, , 384
ESP10, 210, 255, 290, 326, 366, 383, , 387
ESP10, 215, 257, 290, 325, 365, 386, , 390
ESP10, 215, 260, 293, 324, 364, 389, , 393
ESP10, 216, 263, 292, 322, 363, 392, , 396
ESP10, 217, 265, 293, 326, 364, 395, , 399
ESP10, 218, 268, 294, 325, 363, 398, , 402
ESP10, 229, 276, 301, 334, 370, 401, , 405
ESP10, 235, 281, 304, 338, 371, 405, , 409
ESP10, 240, 288, 311, 343, 377, 408, , 412
ESP10, 240, 290, 312, 344, 377, 411, , 415
ESP10, 244, 294, 318, 348, 381, 414, , 418
ESP10, 244, 295, 319, 349, 380, 417, , 421
ESP10, 240, 289, 316, 344, 374, 420, , 424
ESP10, 244, 296, 319, 349, 378, 423, , 427
ESP10, 245, 298, 319, 352, 379, 426, , 430
ESP10, 251, 300, 319, 352, 380, 429, , 433
ESP10, 250, 301, 319, 352, 382, 432, , 436
ESP10, 249, 301, 320, 351, 382, 435, , 439
ESP10, 240, 295, 312, 341, 376, 438, , 442
ESP10, 233, 288, 305, 333, 370, 441, , 445
ESP10, 243, 289, 308, 335, 374, 444, , 448
ESP10, 247, 291, 311, 336, 376, 447, , 451
ESP10, 245, 289, 311, 334, 375, 450, , 454
ESP10, 245, 283, 305, 331, 370, 453, , 457
ESP10, 253, 293, 313, 337, 377, 456, , 460
ESP10, 254, 291, 310, 336, 373, 459, , 463
ESP10, 252, 290, 311, 340, 370, 462, , 466
ESP10, 255, 294, 316, 342, 370, 465, , 469
ESP10, 259, 298, 320, 342, 370, 468, , 472
ESP10, 253, 293, 315, 334, 363, 471, , 475
ESP10, 257, 297, 317, 336, 366, 474, , 478
ESP10, 253, 297, 315, 337, 362, 477, , 481
ESP10, 240, 284, 302, 328, 348, 480, , 484
ESP10, 242, 285, 301, 329, 350, 483, , 487
ESP10, 249, 290, 308, 334, 356, 486, , 490
ESP10, 238, 278, 299, 323, 344, 489, , 493
ESP10, 250, 287, 311, 331, 354, 492, , 496
ESP10, 245, 281, 304, 325, 347, 495, , 499
ESP10, 255, 290, 310, 331, 355, 498, , 502
ESP10, 254, 286, 307, 329, 353, 502, , 506
ESP10, 264, 292, 313, 336, 360, 505, , 509
ESP10, 269, 293, 313, 340, 362, 508, , 512
ESP10, 272, 295, 317, 341, 364, 511, , 515
ESP10, 271, 296, 318, 340, 364, 514, , 518
ESP10, 266, 293, 312, 334, 358, 517, , 521
ESP10, 261, 290, 310, 328, 353, 520, , 524
ESP10, 256, 282, 302, 318, 343, 523, , 527
ESP10, 259, 283, 303, 320, 342, 526, , 530
ESP10, 258, 280, 300, 317, 338, 529, , 533
ESP10, 251, 273, 293, 309, 330, 532, , 536
ESP10, 247, 267, 293, 304, 326, 535, , 539
ESP10, 241, 264, 287, 298, 321, 538, , 542
ESP10, 240, 266, 283, 300, 317, 541, , 545
ESP10, 230, 255, 270, 289, 306, 544, , 548
ESP10, 232, 258, 270, 291, 309, 547, , 551
ESP10, 215, 243, 257, 276, 295, 550, , 554
ESP10, 231, 257, 269, 289, 308, 553, , 557
ESP10, 230, 258, 272, 291, 308, 556, , 560
ESP10, 225, 255, 266, 286, 304, 559, , 563
ESP10, 223, 249, 258, 280, 296, 562, , 566
ESP10, 229, 256, 264, 287, 303, 565, , 569
ESP10, 226, 251, 261, 282, 301, 568, , 572
ESP10, 221, 245, 258, 276, 299, 571, , 575
ESP10, 217, 240, 252, 270, 295, 574, , 578
ESP10, 219, 242, 256, 272, 297, 577, , 581
ESP10, 217, 239, 255, 273, 295, 580, , 584
ESP10, 221, 240, 255, 274, 298, 583, , 587
ESP10, 222, 238, 254, 271, 294, 586, , 590
ESP10, 229, 241, 257, 273, 298, 589, , 593
ESP10, 228, 241, 257, 271, 295, 592, , 596
ESP10, 218, 235, 248, 265, 286, 596, , 600
ESP10, 215, 232, 247, 263, 283, 599, , 603
ESP10, 218, 237, 253, 269, 289, 602, , 606
ESP10, 217, 238, 253, 269, 289, 605, , 609
ESP10, 219, 242, 258, 274, 292, 608, , 612
ESP10, 221, 247, 262, 280, 296, 611, , 615
ESP10, 226, 251, 267, 284, 300, 614, , 618
ESP10, 234, 258, 273, 293, 306, 617, , 621
ESP10, 236, 260, 274, 293, 307, 620, , 624
ESP10, 235, 261, 273, 291, 306, 623, , 627
ESP10, 239, 267, 280, 294, 312, 626, , 630
ESP10, 237, 266, 283, 297, 312, 629, , 633
ESP10, 234, 263, 280, 296, 312, 632, , 636
ESP10, 233, 264, 281, 296, 310, 635, , 639
ESP10, 235, 269, 285, 299, 314, 638, , 642
ESP10, 234, 267, 282, 298, 313, 641, , 645
ESP10, 231, 262, 275, 293, 305, 644, , 648
ESP10, 227, 259, 272, 289, 301, 647, , 651
ESP10, 226, 258, 274, 289, 300, 650, , 654
ESP10, 230, 263, 278, 295, 306, 653, , 657
ESP10, 235, 266, 281, 297, 308, 656, , 660
ESP10, 233, 268, 278, 295, 304, 659, , 663
ESP10, 241, 276, 283, 301, 311, 662, , 666
ESP10, 243, 273, 281, 299, 309, 665, , 669
ESP10, 246, 276, 284, 302, 311, 668, , 672
ESP10, 242, 269, 282, 298, 307, 671, , 675
ESP10, 244, 271, 284, 301, 309, 674, , 678
ESP10, 246, 274, 288, 304, 312, 677, , 681
ESP10, 248, 275, 290, 307, 314, 680, , 684
ESP10, 250, 277, 292, 310, 316, 683, , 687
ESP10, 260, 286, 302, 318, 327, 686, , 690
ESP10, 260, 284, 301, 317, 327, 689, , 693
ESP10, 262, 286, 302, 318, 328, 693, , 697
ESP10, 261, 289, 301, 317, 329, 696, , 700
ESP10, 260, 288, 300, 314, 327, 699, , 703
ESP10, 262, 293, 304, 316, 329, 702, , 706
ESP10, 260, 293, 304, 315, 328, 705, , 709
ESP10, 261, 293, 304, 316, 328, 708, , 712
ESP10, 267, 297, 309, 322, 333, 711, , 715
ESP10, 270, 301, 313, 325, 337, 714, , 718
ESP10, 273, 302, 315, 328, 337, 717, , 721
ESP10, 273, 300, 314, 328, 335, 720, , 724
ESP10, 276, 299, 314, 327, 333, 723, , 727
ESP10, 279, 300, 317, 329, 334, 726, , 730
ESP10, 279, 299, 317, 329, 334, 729, , 733
ESP10, 278, 297, 315, 328, 336, 732, , 736
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ESP10
HEFS
ESP0
Data Files
/chpsesp/ensemble/natural/WELW1N_SQIN.ESPF10.csv
WELW1N_SQIN.ESPF0.csv|2026-05-08
WELW1N_SQIN.ESPF10.csv|2026-05-08
WELW1N_SQIN.ESPFM.csv|2026-05-08
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ESP10,ESPM,ESP0
ESP10,ESPM,ESP0
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