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Archive:
Water Year
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SNAKE - ICE HARBOR DAM
(
IHDW1
)
Forecasts for Water Year
2026
Natural Forecast
ESP with 10 Days QPF
Ensemble:
2026-08-16
Issued:
2026-08-16
Hide Forecast
Forecast
Period
Forecasts Are in KAF
30 Year
Average
(1991-2020)
90 %
50 %
%
Average
10 %
APR-SEP
16454
16488
68
16624
24076
APR-JUL
14625
14625
67
14625
21732
APR-AUG
15533
15534
68
15540
22972
JAN-SEP
24545
24579
77
24714
31844
JAN-JUL
22715
22715
77
22715
29500
OCT-SEP
29964
29997
82
30133
36407
Experimental
HEFS with 15 days EQPF
Ensemble:
2026-08-16
Issued:
2026-08-16
Hide Forecast
APR-SEP
16456
16490
68
16625
24076
APR-JUL
14625
14625
67
14625
21732
APR-AUG
15532
15535
68
15545
22972
JAN-SEP
24547
24580
77
24716
31844
JAN-JUL
22715
22715
77
22715
29500
OCT-SEP
29965
29999
82
30135
36407
Reference
ESP with 0 Days QPF
Ensemble:
2026-08-16
Issued:
2026-08-16
Hide Forecast
APR-SEP
16462
16505
69
16672
24076
APR-JUL
14625
14625
67
14625
21732
APR-AUG
15534
15540
68
15569
22972
JAN-SEP
24552
24595
77
24762
31844
JAN-JUL
22715
22715
77
22715
29500
OCT-SEP
29971
30014
82
30181
36407
Move the mouse over the desired "Forecast Period" to display a graph.
ESP10, 246, 313, 369, 409, 472, 70, , 74
ESP10, 240, 312, 375, 417, 472, 72, , 76
ESP10, 227, 302, 366, 407, 466, 74, , 78
ESP10, 226, 300, 367, 405, 466, 76, , 80
ESP10, 232, 305, 366, 409, 469, 78, , 82
ESP10, 227, 304, 368, 409, 466, 81, , 85
ESP10, 235, 307, 370, 411, 469, 83, , 87
ESP10, 233, 308, 370, 415, 472, 85, , 89
ESP10, 235, 310, 371, 415, 471, 87, , 91
ESP10, 224, 299, 368, 411, 467, 89, , 93
ESP10, 219, 294, 361, 407, 463, 91, , 95
ESP10, 225, 300, 370, 412, 467, 93, , 97
ESP10, 224, 298, 369, 411, 469, 95, , 99
ESP10, 224, 298, 368, 412, 469, 97, , 101
ESP10, 224, 293, 364, 409, 465, 99, , 103
ESP10, 210, 282, 355, 402, 456, 101, , 105
ESP10, 207, 276, 349, 401, 448, 103, , 107
ESP10, 208, 277, 351, 404, 451, 106, , 110
ESP10, 210, 281, 358, 408, 457, 108, , 112
ESP10, 214, 284, 363, 410, 459, 110, , 114
ESP10, 205, 274, 352, 404, 453, 112, , 116
ESP10, 214, 282, 362, 409, 460, 114, , 118
ESP10, 213, 285, 358, 407, 458, 116, , 120
ESP10, 221, 297, 365, 413, 464, 118, , 122
ESP10, 232, 303, 374, 418, 466, 120, , 124
ESP10, 228, 298, 368, 413, 466, 122, , 126
ESP10, 237, 298, 371, 413, 464, 124, , 128
ESP10, 242, 311, 372, 415, 467, 126, , 130
ESP10, 241, 302, 368, 413, 466, 129, , 133
ESP10, 222, 289, 354, 403, 457, 131, , 135
ESP10, 226, 285, 352, 402, 455, 133, , 137
ESP10, 236, 300, 352, 400, 456, 135, , 139
ESP10, 253, 306, 355, 407, 460, 137, , 141
ESP10, 244, 302, 359, 411, 468, 139, , 143
ESP10, 248, 306, 362, 416, 471, 141, , 145
ESP10, 249, 319, 360, 415, 471, 143, , 147
ESP10, 247, 321, 365, 413, 469, 145, , 149
ESP10, 241, 311, 357, 411, 466, 147, , 151
ESP10, 245, 315, 358, 412, 468, 149, , 153
ESP10, 242, 316, 362, 412, 467, 151, , 155
ESP10, 254, 331, 369, 419, 473, 154, , 158
ESP10, 251, 334, 373, 425, 476, 156, , 160
ESP10, 254, 335, 370, 424, 477, 158, , 162
ESP10, 261, 341, 379, 432, 481, 160, , 164
ESP10, 264, 342, 383, 434, 482, 162, , 166
ESP10, 269, 339, 385, 433, 485, 164, , 168
ESP10, 268, 347, 387, 434, 487, 166, , 170
ESP10, 277, 354, 394, 439, 493, 168, , 172
ESP10, 287, 352, 391, 441, 491, 170, , 174
ESP10, 286, 348, 388, 440, 490, 172, , 176
ESP10, 287, 346, 388, 438, 487, 174, , 178
ESP10, 284, 345, 382, 431, 483, 177, , 181
ESP10, 287, 359, 386, 433, 484, 179, , 183
ESP10, 295, 363, 391, 438, 487, 181, , 185
ESP10, 292, 359, 385, 435, 483, 183, , 187
ESP10, 294, 361, 390, 439, 486, 185, , 189
ESP10, 289, 343, 385, 429, 479, 187, , 191
ESP10, 287, 354, 390, 436, 478, 189, , 193
ESP10, 294, 357, 392, 440, 484, 191, , 195
ESP10, 288, 339, 382, 425, 473, 193, , 197
ESP10, 284, 328, 366, 422, 460, 195, , 199
ESP10, 292, 344, 378, 427, 468, 197, , 201
ESP10, 286, 333, 371, 424, 461, 199, , 203
ESP10, 271, 318, 356, 416, 452, 202, , 206
ESP10, 276, 322, 361, 421, 458, 204, , 208
ESP10, 258, 311, 350, 408, 450, 206, , 210
ESP10, 261, 315, 360, 411, 454, 208, , 212
ESP10, 279, 326, 369, 420, 461, 210, , 214
ESP10, 284, 333, 379, 428, 463, 212, , 216
ESP10, 277, 328, 369, 421, 458, 214, , 218
ESP10, 269, 315, 361, 419, 455, 216, , 220
ESP10, 263, 304, 355, 412, 447, 218, , 222
ESP10, 255, 290, 350, 409, 444, 220, , 224
ESP10, 253, 304, 349, 413, 446, 222, , 226
ESP10, 254, 303, 351, 414, 449, 225, , 229
ESP10, 251, 285, 349, 407, 442, 227, , 231
ESP10, 242, 285, 345, 399, 440, 229, , 233
ESP10, 256, 301, 355, 407, 445, 231, , 235
ESP10, 276, 312, 365, 422, 453, 233, , 237
ESP10, 290, 309, 358, 416, 451, 235, , 239
ESP10, 290, 312, 355, 419, 451, 237, , 241
ESP10, 293, 316, 363, 426, 454, 239, , 243
ESP10, 299, 323, 367, 425, 459, 241, , 245
ESP10, 298, 321, 365, 428, 460, 243, , 247
ESP10, 292, 312, 358, 423, 457, 245, , 249
ESP10, 290, 310, 362, 422, 459, 248, , 252
ESP10, 295, 313, 366, 423, 459, 250, , 254
ESP10, 297, 317, 373, 425, 464, 252, , 256
ESP10, 298, 324, 372, 424, 464, 254, , 258
ESP10, 306, 329, 370, 423, 462, 256, , 260
ESP10, 294, 326, 375, 421, 459, 258, , 262
ESP10, 292, 326, 375, 419, 458, 260, , 264
ESP10, 285, 321, 368, 416, 450, 262, , 266
ESP10, 285, 321, 366, 410, 453, 264, , 268
ESP10, 285, 318, 360, 411, 451, 266, , 270
ESP10, 283, 320, 355, 413, 449, 268, , 272
ESP10, 279, 316, 358, 414, 445, 270, , 274
ESP10, 286, 318, 359, 416, 444, 273, , 277
ESP10, 287, 318, 360, 415, 445, 275, , 279
ESP10, 290, 329, 361, 417, 445, 277, , 281
ESP10, 302, 322, 366, 418, 446, 279, , 283
ESP10, 307, 327, 366, 419, 448, 281, , 285
ESP10, 316, 328, 372, 419, 448, 283, , 287
ESP10, 318, 331, 368, 418, 447, 285, , 289
ESP10, 320, 339, 372, 420, 449, 287, , 291
ESP10, 321, 339, 371, 420, 447, 289, , 293
ESP10, 316, 338, 367, 420, 444, 291, , 295
ESP10, 322, 348, 376, 423, 446, 293, , 297
ESP10, 326, 348, 375, 423, 448, 296, , 300
ESP10, 330, 355, 380, 426, 449, 298, , 302
ESP10, 328, 354, 380, 425, 456, 300, , 304
ESP10, 337, 361, 389, 431, 461, 302, , 306
ESP10, 341, 365, 392, 432, 463, 304, , 308
ESP10, 345, 369, 397, 435, 465, 306, , 310
ESP10, 349, 371, 397, 436, 468, 308, , 312
ESP10, 346, 371, 398, 437, 468, 310, , 314
ESP10, 349, 371, 400, 437, 469, 312, , 316
ESP10, 348, 376, 402, 437, 467, 314, , 318
ESP10, 351, 378, 404, 438, 468, 316, , 320
ESP10, 352, 379, 406, 440, 468, 318, , 322
ESP10, 343, 372, 400, 436, 463, 321, , 325
ESP10, 351, 380, 407, 441, 468, 323, , 327
ESP10, 352, 381, 406, 442, 468, 325, , 329
ESP10, 349, 371, 404, 440, 462, 327, , 331
ESP10, 354, 374, 404, 442, 462, 329, , 333
ESP10, 357, 380, 408, 443, 471, 331, , 335
ESP10, 364, 385, 408, 444, 470, 333, , 337
ESP10, 364, 381, 411, 442, 469, 335, , 339
ESP10, 361, 383, 406, 439, 467, 337, , 341
ESP10, 361, 381, 408, 439, 461, 339, , 343
ESP10, 345, 376, 406, 434, 456, 341, , 345
ESP10, 346, 374, 403, 433, 459, 344, , 348
ESP10, 345, 378, 401, 434, 459, 346, , 350
ESP10, 353, 381, 407, 438, 463, 348, , 352
ESP10, 362, 382, 403, 440, 465, 350, , 354
ESP10, 358, 378, 405, 438, 463, 352, , 356
ESP10, 354, 376, 395, 432, 457, 354, , 358
ESP10, 346, 374, 399, 431, 460, 356, , 360
ESP10, 335, 367, 387, 424, 453, 358, , 362
ESP10, 348, 377, 402, 431, 463, 360, , 364
ESP10, 343, 373, 399, 430, 461, 362, , 366
ESP10, 350, 380, 410, 435, 465, 364, , 368
ESP10, 367, 380, 417, 440, 467, 366, , 370
ESP10, 366, 380, 417, 440, 469, 369, , 373
ESP10, 365, 385, 413, 442, 468, 371, , 375
ESP10, 366, 391, 415, 445, 471, 373, , 377
ESP10, 370, 393, 417, 445, 472, 375, , 379
ESP10, 361, 383, 412, 435, 463, 377, , 381
ESP10, 353, 375, 414, 433, 457, 379, , 383
ESP10, 342, 368, 408, 428, 453, 381, , 385
ESP10, 350, 385, 417, 436, 457, 383, , 387
ESP10, 348, 383, 419, 437, 455, 385, , 389
ESP10, 352, 380, 415, 437, 455, 387, , 391
ESP10, 349, 371, 407, 430, 446, 389, , 393
ESP10, 355, 379, 408, 435, 450, 392, , 396
ESP10, 350, 381, 408, 432, 445, 394, , 398
ESP10, 352, 381, 408, 433, 446, 396, , 400
ESP10, 347, 381, 405, 432, 448, 398, , 402
ESP10, 355, 379, 402, 432, 447, 400, , 404
ESP10, 365, 388, 412, 438, 452, 402, , 406
ESP10, 356, 382, 401, 433, 445, 404, , 408
ESP10, 338, 371, 390, 424, 438, 406, , 410
ESP10, 357, 389, 403, 439, 450, 408, , 412
ESP10, 362, 390, 409, 441, 455, 410, , 414
ESP10, 362, 395, 414, 442, 457, 412, , 416
ESP10, 364, 391, 413, 438, 454, 414, , 418
ESP10, 361, 385, 409, 434, 450, 417, , 421
ESP10, 365, 394, 414, 436, 454, 419, , 423
ESP10, 374, 399, 418, 443, 456, 421, , 425
ESP10, 378, 401, 424, 452, 459, 423, , 427
ESP10, 376, 404, 425, 451, 458, 425, , 429
ESP10, 378, 407, 427, 453, 459, 427, , 431
ESP10, 379, 404, 427, 451, 456, 429, , 433
ESP10, 364, 387, 415, 437, 443, 431, , 435
ESP10, 359, 380, 408, 426, 437, 433, , 437
ESP10, 363, 381, 411, 430, 440, 435, , 439
ESP10, 360, 375, 406, 425, 433, 437, , 441
ESP10, 361, 376, 409, 426, 436, 440, , 444
ESP10, 365, 380, 414, 428, 439, 442, , 446
ESP10, 365, 381, 414, 428, 439, 444, , 448
ESP10, 370, 383, 418, 434, 441, 446, , 450
ESP10, 372, 386, 422, 434, 443, 448, , 452
ESP10, 370, 383, 417, 431, 439, 450, , 454
ESP10, 378, 392, 423, 439, 446, 452, , 456
ESP10, 374, 391, 422, 436, 443, 454, , 458
ESP10, 373, 387, 420, 436, 445, 456, , 460
ESP10, 376, 385, 419, 435, 445, 458, , 462
ESP10, 377, 392, 423, 438, 447, 460, , 464
ESP10, 367, 380, 412, 427, 439, 462, , 466
ESP10, 359, 375, 406, 420, 431, 465, , 469
ESP10, 355, 371, 401, 415, 427, 467, , 471
ESP10, 353, 371, 400, 415, 428, 469, , 473
ESP10, 348, 364, 393, 407, 420, 471, , 475
ESP10, 362, 371, 403, 413, 426, 473, , 477
ESP10, 355, 370, 400, 409, 421, 475, , 479
ESP10, 375, 383, 414, 423, 434, 477, , 481
ESP10, 369, 379, 407, 419, 429, 479, , 483
ESP10, 380, 387, 416, 427, 436, 481, , 485
ESP10, 376, 387, 413, 424, 433, 483, , 487
ESP10, 376, 388, 411, 422, 431, 485, , 489
ESP10, 374, 390, 413, 420, 430, 488, , 492
ESP10, 373, 392, 413, 422, 430, 490, , 494
ESP10, 376, 398, 417, 425, 432, 492, , 496
ESP10, 385, 407, 424, 432, 439, 494, , 498
ESP10, 385, 409, 423, 432, 439, 496, , 500
ESP10, 388, 409, 425, 433, 440, 498, , 502
ESP10, 385, 408, 426, 432, 438, 500, , 504
ESP10, 386, 409, 427, 433, 438, 502, , 506
ESP10, 388, 414, 429, 434, 441, 504, , 508
ESP10, 387, 413, 429, 434, 440, 506, , 510
ESP10, 386, 414, 428, 434, 439, 508, , 512
ESP10, 395, 417, 428, 436, 441, 510, , 514
ESP10, 399, 417, 431, 436, 441, 513, , 517
ESP10, 398, 418, 431, 437, 441, 515, , 519
ESP10, 400, 419, 432, 438, 444, 517, , 521
ESP10, 403, 420, 432, 440, 444, 519, , 523
ESP10, 407, 421, 432, 439, 444, 521, , 525
ESP10, 408, 422, 434, 439, 444, 523, , 527
ESP10, 408, 420, 434, 438, 443, 525, , 529
ESP10, 410, 418, 434, 438, 442, 527, , 531
ESP10, 414, 420, 435, 440, 444, 529, , 533
ESP10, 412, 418, 431, 437, 440, 531, , 535
ESP10, 418, 422, 435, 442, 446, 533, , 537
ESP10, 422, 425, 438, 443, 448, 536, , 540
ESP10, 419, 425, 437, 442, 445, 538, , 542
ESP10, 422, 427, 438, 444, 447, 540, , 544
ESP10, 419, 426, 436, 441, 445, 542, , 546
ESP10, 419, 428, 435, 441, 445, 544, , 548
ESP10, 421, 428, 436, 441, 445, 546, , 550
ESP10, 422, 430, 438, 442, 445, 548, , 552
ESP10, 422, 430, 437, 440, 443, 550, , 554
ESP10, 423, 430, 437, 441, 444, 552, , 556
ESP10, 424, 432, 438, 441, 445, 554, , 558
ESP10, 422, 430, 436, 440, 443, 556, , 560
ESP10, 420, 429, 433, 437, 440, 558, , 562
ESP10, 421, 429, 435, 438, 440, 561, , 565
ESP10, 425, 430, 436, 438, 440, 563, , 567
ESP10, 425, 429, 434, 436, 438, 565, , 569
ESP10, 428, 431, 434, 437, 439, 567, , 571
ESP10, 429, 432, 435, 438, 440, 569, , 573
ESP10, 431, 434, 437, 439, 441, 571, , 575
ESP10, 430, 434, 437, 439, 440, 573, , 577
ESP10, 430, 434, 437, 439, 440, 575, , 579
ESP10, 431, 434, 437, 439, 440, 577, , 581
ESP10, 432, 434, 437, 439, 440, 579, , 583
ESP10, 430, 433, 436, 438, 439, 581, , 585
ESP10, 430, 433, 436, 438, 439, 584, , 588
ESP10, 431, 434, 435, 437, 439, 586, , 590
ESP10, 431, 434, 436, 438, 439, 588, , 592
ESP10, 432, 435, 437, 439, 439, 590, , 594
ESP10, 433, 437, 439, 440, 440, 592, , 596
ESP10, 433, 435, 437, 439, 439, 594, , 598
ESP10, 433, 436, 438, 439, 440, 596, , 600
ESP10, 433, 436, 438, 439, 439, 598, , 602
ESP10, 434, 436, 438, 439, 440, 600, , 604
ESP10, 434, 436, 438, 439, 440, 602, , 606
ESP10, 434, 436, 438, 439, 440, 604, , 608
ESP10, 434, 436, 438, 439, 439, 607, , 611
ESP10, 433, 436, 438, 438, 439, 609, , 613
ESP10, 433, 435, 437, 438, 439, 611, , 615
ESP10, 433, 435, 437, 437, 438, 613, , 617
ESP10, 433, 435, 437, 437, 438, 615, , 619
ESP10, 433, 435, 437, 437, 438, 617, , 621
ESP10, 433, 435, 436, 437, 437, 619, , 623
ESP10, 433, 435, 436, 437, 437, 621, , 625
ESP10, 433, 435, 436, 437, 437, 623, , 627
ESP10, 433, 435, 436, 436, 437, 625, , 629
ESP10, 432, 434, 435, 435, 436, 627, , 631
ESP10, 431, 433, 433, 434, 434, 629, , 633
ESP10, 426, 429, 430, 430, 431, 632, , 636
ESP10, 427, 429, 430, 430, 431, 634, , 638
ESP10, 428, 430, 431, 431, 432, 636, , 640
ESP10, 428, 429, 431, 431, 431, 638, , 642
ESP10, 428, 429, 430, 431, 431, 640, , 644
ESP10, 428, 429, 431, 431, 431, 642, , 646
ESP10, 428, 430, 431, 431, 432, 644, , 648
ESP10, 428, 430, 431, 431, 432, 646, , 650
ESP10, 428, 430, 431, 432, 432, 648, , 652
ESP10, 428, 430, 431, 432, 432, 650, , 654
ESP10, 429, 430, 431, 432, 432, 652, , 656
ESP10, 428, 430, 431, 432, 432, 655, , 659
ESP10, 429, 430, 431, 432, 432, 657, , 661
ESP10, 428, 430, 431, 431, 432, 659, , 663
ESP10, 429, 430, 431, 432, 432, 661, , 665
ESP10, 429, 430, 431, 432, 432, 663, , 667
ESP10, 429, 430, 431, 432, 432, 665, , 669
ESP10, 429, 431, 432, 432, 432, 667, , 671
ESP10, 429, 430, 432, 432, 432, 669, , 673
ESP10, 429, 430, 432, 432, 432, 671, , 675
ESP10, 430, 431, 432, 433, 433, 673, , 677
ESP10, 430, 431, 432, 433, 433, 675, , 679
ESP10, 430, 431, 432, 433, 433, 677, , 681
ESP10, 430, 431, 432, 433, 433, 680, , 684
ESP10, 430, 431, 433, 433, 433, 682, , 686
ESP10, 430, 432, 433, 433, 434, 684, , 688
ESP10, 430, 432, 433, 433, 434, 686, , 690
ESP10, 431, 432, 433, 434, 434, 688, , 692
ESP10, 431, 432, 433, 434, 434, 690, , 694
ESP10, 431, 432, 434, 434, 434, 692, , 696
ESP10, 432, 433, 434, 434, 435, 694, , 698
ESP10, 432, 433, 434, 434, 435, 696, , 700
ESP10, 432, 433, 434, 435, 435, 698, , 702
ESP10, 432, 433, 434, 435, 435, 700, , 704
ESP10, 432, 433, 434, 435, 435, 703, , 707
ESP10, 432, 433, 434, 435, 435, 705, , 709
ESP10, 433, 434, 435, 435, 435, 707, , 711
ESP10, 433, 434, 435, 435, 436, 709, , 713
ESP10, 433, 434, 435, 436, 436, 711, , 715
ESP10, 432, 434, 435, 435, 435, 713, , 717
ESP10, 432, 434, 435, 435, 435, 715, , 719
ESP10, 433, 434, 435, 435, 435, 717, , 721
ESP10, 433, 434, 435, 435, 435, 719, , 723
ESP10, 433, 434, 435, 436, 436, 721, , 725
ESP10, 433, 434, 435, 436, 436, 723, , 727
ESP10, 434, 435, 436, 436, 436, 725, , 729
ESP10, 434, 435, 436, 436, 436, 728, , 732
ESP10, 434, 436, 436, 436, 437, 730, , 734
ESP10, 434, 436, 436, 436, 437, 732, , 736
ESP10, 434, 435, 436, 436, 436, 734, , 738
Max Scale
Scale To Data
Scale To Last 45 Days
Show Min/Max Ensemble Volume
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ESP10
HEFS
ESP0
Data Files
/chpsesp/ensemble/natural/IHDW1N_SQIN.ESPF10.csv
IHDW1N_SQIN.ESPF0.csv|2026-08-16
IHDW1N_SQIN.ESPF10.csv|2026-08-16
IHDW1N_SQIN.ESPFM.csv|2026-08-16
APR-SEP
SNAKE - ICE HARBOR DAM
(
IHDW1
)
Forecasts for Water Year
2027
Natural Forecast
ESP with 10 Days QPF
Ensemble:
2026-08-16
Issued:
2026-08-16
Hide Forecast
Forecast
Period
Forecasts Are in KAF
30 Year
Average
(1991-2020)
90 %
50 %
%
Average
10 %
APR-SEP
14426
21348
89
30976
24076
APR-JUL
12368
19050
88
27697
21732
APR-AUG
13410
20211
88
29528
22972
JAN-SEP
19880
29199
92
40885
31844
JAN-JUL
17814
26900
91
37980
29500
OCT-SEP
24261
32940
90
45156
36407
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/natural/IHDW1N_SQIN.ESPF10.csv
IHDW1N_SQIN.ESPF0.csv|2026-08-16
IHDW1N_SQIN.ESPF10.csv|2026-08-16
IHDW1N_SQIN.ESPFM.csv|2026-08-16
APR-SEP
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ESP10,ESPM,ESP0
ESP10,ESPM,ESP0
Last Forecast
