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Water Year
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COLUMBIA - BLO ROCK ISLAND DAM
(
RISW1
)
Forecasts for Water Year
2026
Natural Forecast
ESP with 10 Days QPF
Ensemble:
2026-05-01
Issued:
2026-05-01
Hide Forecast
Forecast
Period
Forecasts Are in KAF
30 Year
Average
(1991-2020)
90 %
50 %
%
Average
10 %
APR-SEP
64177
67535
99
73288
68217
APR-JUL
51761
54556
95
59194
57718
JAN-SEP
78272
81630
105
87383
77883
JAN-JUL
65856
68651
102
73289
67384
OCT-SEP
90048
93406
106
99160
87957
Experimental
HEFS with 15 days EQPF
Ensemble:
2026-05-01
Issued:
2026-05-01
Hide Forecast
APR-SEP
65185
68557
100
74315
68217
APR-JUL
53308
56095
97
60822
57718
JAN-SEP
79280
82651
106
88410
77883
JAN-JUL
67403
70190
104
74917
67384
OCT-SEP
91057
94428
107
100186
87957
Reference
ESP with 0 Days QPF
Ensemble:
2026-05-01
Issued:
2026-05-01
Hide Forecast
APR-SEP
66051
69283
102
74981
68217
APR-JUL
52834
55661
96
60863
57718
JAN-SEP
80146
83378
107
89076
77883
JAN-JUL
66928
69756
104
74957
67384
OCT-SEP
91922
95154
108
100852
87957
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, 81, , 85
ESP10, 222, 298, 353, 402, 432, 84, , 88
ESP10, 220, 296, 352, 398, 432, 87, , 91
ESP10, 225, 299, 353, 401, 436, 90, , 94
ESP10, 229, 302, 358, 402, 436, 93, , 97
ESP10, 229, 305, 359, 402, 437, 96, , 100
ESP10, 227, 307, 356, 400, 436, 99, , 103
ESP10, 227, 312, 359, 401, 437, 102, , 106
ESP10, 225, 312, 358, 402, 436, 106, , 110
ESP10, 219, 307, 352, 397, 432, 109, , 113
ESP10, 221, 309, 354, 401, 434, 112, , 116
ESP10, 221, 306, 351, 400, 434, 115, , 119
ESP10, 208, 297, 337, 389, 424, 118, , 122
ESP10, 198, 286, 329, 380, 414, 121, , 125
ESP10, 209, 296, 342, 393, 425, 124, , 128
ESP10, 210, 298, 346, 395, 428, 127, , 131
ESP10, 210, 299, 346, 397, 431, 131, , 135
ESP10, 200, 291, 337, 388, 421, 134, , 138
ESP10, 201, 291, 336, 391, 420, 137, , 141
ESP10, 194, 288, 331, 386, 420, 140, , 144
ESP10, 202, 297, 343, 392, 429, 143, , 147
ESP10, 207, 302, 348, 401, 432, 146, , 150
ESP10, 211, 308, 352, 406, 436, 149, , 153
ESP10, 213, 306, 352, 406, 436, 153, , 157
ESP10, 215, 308, 351, 406, 436, 156, , 160
ESP10, 205, 301, 343, 399, 428, 159, , 163
ESP10, 189, 287, 330, 387, 417, 162, , 166
ESP10, 188, 286, 332, 386, 421, 165, , 169
ESP10, 194, 292, 338, 388, 428, 168, , 172
ESP10, 190, 288, 337, 387, 427, 171, , 175
ESP10, 201, 299, 345, 400, 437, 174, , 178
ESP10, 208, 303, 347, 402, 438, 178, , 182
ESP10, 211, 303, 347, 400, 436, 181, , 185
ESP10, 213, 302, 346, 398, 437, 184, , 188
ESP10, 210, 295, 344, 389, 430, 187, , 191
ESP10, 216, 301, 351, 395, 438, 190, , 194
ESP10, 213, 300, 352, 390, 437, 193, , 197
ESP10, 214, 302, 351, 392, 438, 196, , 200
ESP10, 219, 302, 349, 396, 438, 199, , 203
ESP10, 230, 307, 361, 402, 445, 203, , 207
ESP10, 243, 312, 365, 403, 450, 206, , 210
ESP10, 237, 307, 357, 396, 441, 209, , 213
ESP10, 246, 312, 363, 402, 445, 212, , 216
ESP10, 238, 304, 354, 395, 439, 215, , 219
ESP10, 246, 310, 363, 400, 449, 218, , 222
ESP10, 241, 304, 358, 401, 446, 221, , 225
ESP10, 245, 310, 364, 402, 450, 225, , 229
ESP10, 246, 310, 364, 400, 448, 228, , 232
ESP10, 247, 315, 359, 399, 444, 231, , 235
ESP10, 244, 317, 358, 396, 439, 234, , 238
ESP10, 254, 326, 367, 408, 447, 237, , 241
ESP10, 250, 322, 362, 407, 444, 240, , 244
ESP10, 253, 318, 359, 408, 444, 243, , 247
ESP10, 251, 314, 355, 403, 439, 246, , 250
ESP10, 251, 312, 355, 403, 439, 250, , 254
ESP10, 252, 313, 361, 408, 441, 253, , 257
ESP10, 243, 303, 351, 400, 431, 256, , 260
ESP10, 232, 293, 341, 389, 421, 259, , 263
ESP10, 236, 294, 343, 392, 423, 262, , 266
ESP10, 229, 284, 337, 385, 414, 265, , 269
ESP10, 214, 262, 321, 365, 402, 268, , 272
ESP10, 214, 264, 326, 365, 407, 272, , 276
ESP10, 209, 261, 320, 360, 405, 275, , 279
ESP10, 220, 272, 330, 372, 419, 278, , 282
ESP10, 203, 257, 315, 358, 404, 281, , 285
ESP10, 176, 229, 286, 329, 377, 284, , 288
ESP10, 167, 227, 278, 319, 368, 287, , 291
ESP10, 166, 230, 280, 319, 369, 290, , 294
ESP10, 173, 242, 288, 326, 377, 293, , 297
ESP10, 174, 242, 293, 328, 378, 297, , 301
ESP10, 168, 234, 287, 321, 373, 300, , 304
ESP10, 174, 231, 290, 322, 372, 303, , 307
ESP10, 182, 231, 293, 322, 374, 306, , 310
ESP10, 184, 230, 299, 321, 377, 309, , 313
ESP10, 182, 226, 296, 318, 374, 312, , 316
ESP10, 178, 225, 291, 313, 368, 315, , 319
ESP10, 181, 227, 283, 307, 362, 318, , 322
ESP10, 194, 236, 289, 314, 367, 322, , 326
ESP10, 200, 234, 287, 312, 365, 325, , 329
ESP10, 213, 245, 298, 324, 376, 328, , 332
ESP10, 218, 249, 301, 333, 380, 331, , 335
ESP10, 213, 241, 296, 329, 375, 334, , 338
ESP10, 209, 236, 291, 327, 374, 337, , 341
ESP10, 211, 240, 293, 328, 376, 340, , 344
ESP10, 216, 245, 297, 332, 390, 344, , 348
ESP10, 212, 243, 293, 331, 388, 347, , 351
ESP10, 217, 246, 297, 332, 388, 350, , 354
ESP10, 224, 260, 304, 338, 390, 353, , 357
ESP10, 222, 257, 304, 335, 386, 356, , 360
ESP10, 215, 251, 303, 329, 383, 359, , 363
ESP10, 216, 254, 304, 331, 386, 362, , 366
ESP10, 207, 250, 297, 325, 380, 365, , 369
ESP10, 206, 262, 298, 329, 381, 369, , 373
ESP10, 206, 262, 301, 329, 382, 372, , 376
ESP10, 206, 261, 299, 332, 381, 375, , 379
ESP10, 208, 263, 300, 331, 378, 378, , 382
ESP10, 212, 263, 295, 333, 375, 381, , 385
ESP10, 210, 261, 294, 332, 372, 384, , 388
ESP10, 211, 260, 295, 333, 372, 387, , 391
ESP10, 210, 258, 294, 331, 368, 390, , 394
ESP10, 207, 257, 292, 328, 365, 394, , 398
ESP10, 214, 261, 291, 327, 365, 397, , 401
ESP10, 215, 261, 292, 325, 363, 400, , 404
ESP10, 212, 264, 290, 323, 363, 403, , 407
ESP10, 213, 266, 292, 327, 363, 406, , 410
ESP10, 215, 267, 294, 327, 364, 409, , 413
ESP10, 226, 279, 302, 337, 371, 412, , 416
ESP10, 233, 284, 305, 339, 373, 416, , 420
ESP10, 238, 291, 312, 346, 378, 419, , 423
ESP10, 238, 293, 316, 348, 378, 422, , 426
ESP10, 242, 297, 321, 351, 382, 425, , 429
ESP10, 242, 296, 322, 352, 382, 428, , 432
ESP10, 238, 292, 317, 347, 376, 431, , 435
ESP10, 242, 296, 319, 352, 379, 434, , 438
ESP10, 243, 299, 321, 354, 380, 437, , 441
ESP10, 249, 301, 321, 356, 383, 441, , 445
ESP10, 248, 302, 321, 355, 386, 444, , 448
ESP10, 246, 302, 323, 354, 385, 447, , 451
ESP10, 240, 296, 314, 344, 381, 450, , 454
ESP10, 233, 289, 307, 336, 375, 453, , 457
ESP10, 243, 291, 310, 338, 378, 456, , 460
ESP10, 245, 291, 311, 339, 381, 459, , 463
ESP10, 243, 289, 311, 337, 379, 462, , 466
ESP10, 242, 286, 306, 334, 374, 466, , 470
ESP10, 251, 296, 316, 339, 381, 469, , 473
ESP10, 252, 294, 312, 339, 377, 472, , 476
ESP10, 251, 293, 313, 343, 375, 475, , 479
ESP10, 254, 296, 316, 344, 375, 478, , 482
ESP10, 258, 299, 322, 345, 374, 481, , 485
ESP10, 253, 293, 318, 337, 367, 484, , 488
ESP10, 256, 297, 320, 338, 370, 488, , 492
ESP10, 253, 298, 317, 338, 366, 491, , 495
ESP10, 241, 286, 303, 328, 352, 494, , 498
ESP10, 243, 286, 302, 329, 352, 497, , 501
ESP10, 249, 293, 311, 335, 358, 500, , 504
ESP10, 237, 281, 302, 323, 346, 503, , 507
ESP10, 249, 289, 314, 332, 357, 506, , 510
ESP10, 245, 284, 307, 327, 350, 509, , 513
ESP10, 253, 290, 313, 332, 357, 513, , 517
ESP10, 253, 287, 310, 331, 355, 516, , 520
ESP10, 266, 294, 317, 340, 363, 519, , 523
ESP10, 271, 296, 318, 343, 365, 522, , 526
ESP10, 275, 298, 321, 345, 367, 525, , 529
ESP10, 275, 299, 323, 344, 366, 528, , 532
ESP10, 270, 296, 316, 339, 361, 531, , 535
ESP10, 265, 292, 313, 332, 356, 534, , 538
ESP10, 258, 284, 306, 322, 346, 538, , 542
ESP10, 262, 287, 307, 323, 346, 541, , 545
ESP10, 260, 283, 305, 321, 341, 544, , 548
ESP10, 253, 277, 297, 313, 332, 547, , 551
ESP10, 248, 271, 296, 307, 328, 550, , 554
ESP10, 242, 267, 289, 301, 323, 553, , 557
ESP10, 241, 269, 285, 303, 321, 556, , 560
ESP10, 231, 259, 272, 293, 310, 560, , 564
ESP10, 234, 260, 273, 295, 312, 563, , 567
ESP10, 216, 245, 257, 278, 298, 566, , 570
ESP10, 233, 261, 274, 292, 311, 569, , 573
ESP10, 232, 262, 275, 292, 312, 572, , 576
ESP10, 227, 258, 270, 288, 308, 575, , 579
ESP10, 225, 253, 262, 283, 300, 578, , 582
ESP10, 230, 258, 268, 289, 306, 581, , 585
ESP10, 227, 253, 263, 284, 305, 585, , 589
ESP10, 224, 248, 260, 278, 302, 588, , 592
ESP10, 219, 243, 255, 272, 299, 591, , 595
ESP10, 221, 245, 258, 276, 301, 594, , 598
ESP10, 219, 243, 257, 278, 298, 597, , 601
ESP10, 223, 243, 258, 279, 301, 600, , 604
ESP10, 225, 242, 257, 276, 297, 603, , 607
ESP10, 232, 245, 261, 278, 301, 607, , 611
ESP10, 231, 244, 259, 275, 298, 610, , 614
ESP10, 221, 237, 251, 268, 289, 613, , 617
ESP10, 218, 235, 250, 266, 286, 616, , 620
ESP10, 221, 240, 256, 273, 292, 619, , 623
ESP10, 220, 242, 256, 274, 292, 622, , 626
ESP10, 222, 246, 261, 279, 296, 625, , 629
ESP10, 224, 251, 265, 284, 300, 628, , 632
ESP10, 228, 255, 270, 288, 303, 632, , 636
ESP10, 236, 261, 276, 297, 309, 635, , 639
ESP10, 238, 264, 276, 297, 310, 638, , 642
ESP10, 237, 265, 276, 295, 309, 641, , 645
ESP10, 241, 270, 283, 299, 315, 644, , 648
ESP10, 239, 269, 286, 301, 315, 647, , 651
ESP10, 236, 266, 284, 300, 315, 650, , 654
ESP10, 237, 269, 284, 302, 315, 653, , 657
ESP10, 239, 274, 290, 305, 318, 657, , 661
ESP10, 238, 273, 287, 303, 317, 660, , 664
ESP10, 234, 267, 280, 297, 309, 663, , 667
ESP10, 231, 264, 278, 294, 305, 666, , 670
ESP10, 231, 264, 278, 295, 305, 669, , 673
ESP10, 234, 268, 283, 300, 311, 672, , 676
ESP10, 239, 271, 285, 302, 313, 675, , 679
ESP10, 237, 273, 282, 300, 309, 679, , 683
ESP10, 246, 280, 287, 306, 315, 682, , 686
ESP10, 249, 277, 286, 304, 313, 685, , 689
ESP10, 252, 280, 290, 307, 315, 688, , 692
ESP10, 248, 274, 287, 303, 310, 691, , 695
ESP10, 250, 276, 290, 306, 312, 694, , 698
ESP10, 252, 278, 293, 308, 315, 697, , 701
ESP10, 254, 280, 295, 311, 318, 700, , 704
ESP10, 257, 282, 298, 315, 320, 704, , 708
ESP10, 266, 291, 308, 323, 331, 707, , 711
ESP10, 266, 290, 306, 321, 331, 710, , 714
ESP10, 268, 291, 307, 322, 332, 713, , 717
ESP10, 268, 294, 306, 321, 333, 716, , 720
ESP10, 266, 292, 305, 319, 332, 719, , 723
ESP10, 268, 298, 309, 321, 333, 722, , 726
ESP10, 266, 297, 309, 320, 332, 725, , 729
ESP10, 267, 298, 310, 320, 332, 729, , 733
ESP10, 273, 302, 313, 326, 337, 732, , 736
Max Scale
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Scale To Last 45 Days
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ESP10
HEFS
ESP0
Data Files
/chpsesp/ensemble/natural/RISW1N_SQIN.ESPF10.csv
RISW1N_SQIN.ESPF0.csv|2026-05-01
RISW1N_SQIN.ESPF10.csv|2026-05-01
RISW1N_SQIN.ESPFM.csv|2026-05-01
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ESP10,ESPM,ESP0
ESP10,ESPM,ESP0
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