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Archive:
Water Year
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SKAGIT - ROSS RESERVOIR
(
RODW1
)
Forecasts for Water Year
2026
Natural Forecast
ESP with 10 Days QPF
Ensemble:
2026-08-18
Issued:
2026-08-18
Hide Forecast
Forecast
Period
Forecasts Are in KAF
30 Year
Average
(1991-2020)
90 %
50 %
%
Average
10 %
APR-SEP
1103
1112
73
1127
1527
APR-JUL
972
972
72
972
1347
APR-AUG
1044
1045
72
1048
1457
JAN-SEP
1811
1820
95
1835
1914
JAN-JUL
1680
1680
97
1680
1734
OCT-SEP
2684
2693
115
2707
2341
Experimental
HEFS with 15 days EQPF
Ensemble:
2026-08-18
Issued:
2026-08-18
Hide Forecast
APR-SEP
1079
1086
71
1103
1527
APR-JUL
972
972
72
972
1347
APR-AUG
1029
1031
71
1034
1457
JAN-SEP
1787
1794
94
1811
1914
JAN-JUL
1680
1680
97
1680
1734
OCT-SEP
2660
2667
114
2684
2341
Reference
ESP with 0 Days QPF
Ensemble:
2026-08-18
Issued:
2026-08-18
Hide Forecast
APR-SEP
1098
1112
73
1127
1527
APR-JUL
972
972
72
972
1347
APR-AUG
1037
1044
72
1050
1457
JAN-SEP
1806
1820
95
1835
1914
JAN-JUL
1680
1680
97
1680
1734
OCT-SEP
2678
2692
115
2707
2341
Move the mouse over the desired "Forecast Period" to display a graph.
ESP10, 248, 351, 391, 435, 490, 70, , 74
ESP10, 249, 355, 391, 435, 490, 72, , 76
ESP10, 250, 356, 391, 435, 490, 74, , 78
ESP10, 251, 355, 391, 435, 490, 76, , 80
ESP10, 252, 355, 391, 435, 490, 78, , 82
ESP10, 252, 355, 391, 435, 490, 80, , 84
ESP10, 253, 355, 391, 435, 490, 83, , 87
ESP10, 254, 355, 391, 435, 490, 85, , 89
ESP10, 254, 355, 391, 435, 490, 87, , 91
ESP10, 254, 352, 391, 434, 488, 89, , 93
ESP10, 255, 354, 391, 435, 489, 91, , 95
ESP10, 254, 352, 391, 434, 488, 93, , 97
ESP10, 254, 354, 391, 434, 490, 95, , 99
ESP10, 252, 354, 390, 434, 488, 97, , 101
ESP10, 247, 350, 388, 434, 485, 99, , 103
ESP10, 235, 338, 386, 424, 475, 101, , 105
ESP10, 231, 335, 382, 420, 471, 103, , 107
ESP10, 231, 333, 380, 418, 470, 105, , 109
ESP10, 235, 334, 381, 419, 473, 107, , 111
ESP10, 234, 332, 377, 416, 472, 109, , 113
ESP10, 225, 324, 368, 410, 465, 112, , 116
ESP10, 232, 331, 374, 417, 472, 114, , 118
ESP10, 218, 319, 360, 403, 461, 116, , 120
ESP10, 228, 326, 371, 410, 469, 118, , 122
ESP10, 229, 324, 367, 410, 467, 120, , 124
ESP10, 225, 321, 364, 408, 464, 122, , 126
ESP10, 230, 326, 367, 413, 467, 124, , 128
ESP10, 234, 330, 370, 416, 469, 126, , 130
ESP10, 235, 329, 370, 416, 470, 128, , 132
ESP10, 225, 320, 361, 408, 463, 130, , 134
ESP10, 210, 308, 346, 394, 449, 132, , 136
ESP10, 215, 309, 351, 398, 450, 134, , 138
ESP10, 217, 310, 355, 399, 450, 136, , 140
ESP10, 242, 333, 383, 422, 469, 139, , 143
ESP10, 245, 335, 392, 426, 471, 141, , 145
ESP10, 240, 335, 388, 425, 466, 143, , 147
ESP10, 247, 340, 389, 427, 467, 145, , 149
ESP10, 245, 337, 382, 422, 461, 147, , 151
ESP10, 248, 344, 391, 425, 463, 149, , 153
ESP10, 246, 341, 391, 425, 460, 151, , 155
ESP10, 248, 343, 396, 426, 461, 153, , 157
ESP10, 257, 349, 400, 430, 468, 155, , 159
ESP10, 268, 349, 400, 430, 469, 157, , 161
ESP10, 275, 357, 407, 435, 475, 159, , 163
ESP10, 274, 352, 403, 434, 472, 161, , 165
ESP10, 278, 355, 407, 437, 474, 163, , 167
ESP10, 271, 344, 400, 431, 469, 165, , 169
ESP10, 278, 352, 410, 438, 475, 168, , 172
ESP10, 275, 355, 407, 440, 472, 170, , 174
ESP10, 280, 358, 409, 443, 476, 172, , 176
ESP10, 280, 357, 409, 441, 474, 174, , 178
ESP10, 278, 357, 408, 440, 472, 176, , 180
ESP10, 277, 357, 406, 440, 472, 178, , 182
ESP10, 292, 376, 419, 452, 482, 180, , 184
ESP10, 288, 376, 414, 447, 478, 182, , 186
ESP10, 288, 379, 415, 448, 478, 184, , 188
ESP10, 284, 375, 411, 443, 474, 186, , 190
ESP10, 284, 373, 409, 440, 472, 188, , 192
ESP10, 289, 383, 411, 441, 475, 190, , 194
ESP10, 277, 369, 397, 436, 462, 192, , 196
ESP10, 278, 371, 399, 439, 466, 195, , 199
ESP10, 288, 378, 405, 443, 476, 197, , 201
ESP10, 279, 366, 393, 433, 467, 199, , 203
ESP10, 266, 353, 381, 423, 457, 201, , 205
ESP10, 270, 356, 387, 428, 460, 203, , 207
ESP10, 252, 340, 373, 411, 444, 205, , 209
ESP10, 280, 368, 403, 434, 472, 207, , 211
ESP10, 272, 362, 396, 427, 468, 209, , 213
ESP10, 262, 347, 381, 416, 459, 211, , 215
ESP10, 267, 346, 381, 415, 458, 213, , 217
ESP10, 268, 348, 384, 420, 459, 215, , 219
ESP10, 273, 352, 396, 427, 463, 217, , 221
ESP10, 269, 349, 394, 425, 461, 219, , 223
ESP10, 265, 344, 389, 424, 458, 221, , 225
ESP10, 247, 324, 371, 411, 439, 224, , 228
ESP10, 243, 318, 367, 406, 435, 226, , 230
ESP10, 245, 322, 371, 410, 440, 228, , 232
ESP10, 240, 319, 363, 403, 431, 230, , 234
ESP10, 240, 315, 360, 398, 427, 232, , 236
ESP10, 235, 314, 357, 390, 419, 234, , 238
ESP10, 258, 333, 378, 409, 436, 236, , 240
ESP10, 251, 327, 372, 406, 430, 238, , 242
ESP10, 257, 333, 381, 415, 435, 240, , 244
ESP10, 258, 334, 384, 418, 435, 242, , 246
ESP10, 255, 330, 382, 416, 433, 244, , 248
ESP10, 252, 323, 378, 408, 430, 246, , 250
ESP10, 258, 329, 380, 410, 434, 248, , 252
ESP10, 262, 334, 382, 412, 436, 251, , 255
ESP10, 263, 333, 383, 414, 435, 253, , 257
ESP10, 265, 336, 387, 416, 438, 255, , 259
ESP10, 266, 341, 392, 418, 439, 257, , 261
ESP10, 263, 338, 389, 413, 436, 259, , 263
ESP10, 264, 339, 386, 412, 436, 261, , 265
ESP10, 269, 343, 388, 416, 435, 263, , 267
ESP10, 268, 337, 381, 410, 430, 265, , 269
ESP10, 272, 343, 385, 411, 430, 267, , 271
ESP10, 278, 347, 386, 413, 433, 269, , 273
ESP10, 278, 346, 384, 413, 435, 271, , 275
ESP10, 283, 347, 384, 415, 439, 273, , 277
ESP10, 287, 348, 387, 418, 441, 275, , 279
ESP10, 289, 349, 388, 419, 443, 278, , 282
ESP10, 291, 349, 392, 419, 443, 280, , 284
ESP10, 293, 351, 393, 418, 443, 282, , 286
ESP10, 290, 345, 389, 413, 440, 284, , 288
ESP10, 289, 348, 389, 413, 443, 286, , 290
ESP10, 292, 343, 385, 410, 438, 288, , 292
ESP10, 290, 341, 383, 407, 436, 290, , 294
ESP10, 294, 349, 386, 411, 438, 292, , 296
ESP10, 294, 355, 387, 411, 442, 294, , 298
ESP10, 303, 361, 392, 416, 447, 296, , 300
ESP10, 307, 364, 392, 417, 445, 298, , 302
ESP10, 314, 369, 399, 424, 448, 300, , 304
ESP10, 314, 368, 400, 423, 445, 302, , 306
ESP10, 324, 375, 407, 428, 450, 304, , 308
ESP10, 321, 372, 405, 426, 446, 307, , 311
ESP10, 314, 365, 400, 422, 440, 309, , 313
ESP10, 315, 369, 404, 425, 442, 311, , 315
ESP10, 320, 374, 409, 429, 449, 313, , 317
ESP10, 324, 376, 411, 429, 456, 315, , 319
ESP10, 326, 376, 413, 430, 458, 317, , 321
ESP10, 328, 379, 415, 434, 460, 319, , 323
ESP10, 324, 375, 410, 429, 454, 321, , 325
ESP10, 317, 369, 402, 423, 448, 323, , 327
ESP10, 320, 374, 404, 424, 451, 325, , 329
ESP10, 316, 376, 401, 420, 445, 327, , 331
ESP10, 317, 376, 402, 420, 445, 329, , 333
ESP10, 317, 376, 400, 417, 443, 331, , 335
ESP10, 328, 386, 411, 426, 450, 334, , 338
ESP10, 334, 388, 411, 429, 449, 336, , 340
ESP10, 337, 389, 408, 433, 448, 338, , 342
ESP10, 343, 391, 411, 433, 457, 340, , 344
ESP10, 348, 393, 417, 436, 459, 342, , 346
ESP10, 345, 387, 411, 431, 453, 344, , 348
ESP10, 358, 388, 413, 433, 454, 346, , 350
ESP10, 361, 386, 411, 430, 451, 348, , 352
ESP10, 355, 380, 407, 423, 444, 350, , 354
ESP10, 356, 383, 406, 422, 444, 352, , 356
ESP10, 363, 393, 415, 432, 456, 354, , 358
ESP10, 352, 382, 406, 421, 445, 356, , 360
ESP10, 355, 386, 410, 425, 449, 358, , 362
ESP10, 347, 378, 404, 421, 444, 360, , 364
ESP10, 349, 380, 406, 424, 446, 363, , 367
ESP10, 348, 379, 405, 424, 445, 365, , 369
ESP10, 358, 390, 418, 437, 454, 367, , 371
ESP10, 363, 397, 421, 440, 457, 369, , 373
ESP10, 368, 400, 421, 441, 457, 371, , 375
ESP10, 369, 399, 421, 440, 457, 373, , 377
ESP10, 366, 395, 417, 437, 453, 375, , 379
ESP10, 368, 392, 416, 435, 451, 377, , 381
ESP10, 365, 389, 414, 432, 447, 379, , 383
ESP10, 368, 389, 413, 434, 447, 381, , 385
ESP10, 368, 390, 414, 433, 445, 383, , 387
ESP10, 361, 382, 406, 425, 436, 385, , 389
ESP10, 357, 379, 403, 422, 433, 387, , 391
ESP10, 345, 367, 391, 409, 422, 390, , 394
ESP10, 342, 361, 386, 404, 420, 392, , 396
ESP10, 337, 358, 381, 398, 414, 394, , 398
ESP10, 335, 356, 380, 398, 411, 396, , 400
ESP10, 335, 353, 381, 395, 407, 398, , 402
ESP10, 351, 370, 396, 410, 421, 400, , 404
ESP10, 352, 369, 393, 409, 418, 402, , 406
ESP10, 356, 373, 396, 415, 422, 404, , 408
ESP10, 366, 386, 405, 427, 432, 406, , 410
ESP10, 367, 384, 402, 425, 434, 408, , 412
ESP10, 365, 382, 399, 423, 430, 410, , 414
ESP10, 369, 386, 401, 424, 432, 412, , 416
ESP10, 364, 383, 397, 419, 427, 414, , 418
ESP10, 367, 384, 401, 421, 430, 416, , 420
ESP10, 364, 380, 398, 418, 428, 419, , 423
ESP10, 368, 383, 401, 422, 430, 421, , 425
ESP10, 371, 384, 400, 419, 428, 423, , 427
ESP10, 371, 383, 399, 417, 426, 425, , 429
ESP10, 374, 385, 403, 419, 429, 427, , 431
ESP10, 371, 384, 398, 415, 424, 429, , 433
ESP10, 369, 382, 397, 415, 421, 431, , 435
ESP10, 374, 386, 404, 421, 427, 433, , 437
ESP10, 372, 384, 403, 420, 427, 435, , 439
ESP10, 380, 389, 408, 426, 433, 437, , 441
ESP10, 384, 394, 409, 428, 437, 439, , 443
ESP10, 384, 394, 411, 429, 439, 441, , 445
ESP10, 384, 396, 411, 428, 439, 443, , 447
ESP10, 387, 398, 411, 430, 440, 446, , 450
ESP10, 388, 400, 414, 432, 441, 448, , 452
ESP10, 391, 403, 416, 435, 444, 450, , 454
ESP10, 391, 402, 420, 435, 444, 452, , 456
ESP10, 390, 402, 422, 435, 445, 454, , 458
ESP10, 392, 401, 421, 434, 445, 456, , 460
ESP10, 395, 401, 421, 434, 446, 458, , 462
ESP10, 393, 401, 419, 433, 444, 460, , 464
ESP10, 389, 397, 415, 428, 442, 462, , 466
ESP10, 389, 398, 415, 428, 443, 464, , 468
ESP10, 390, 399, 415, 428, 443, 466, , 470
ESP10, 389, 399, 415, 428, 442, 468, , 472
ESP10, 394, 405, 420, 431, 445, 470, , 474
ESP10, 392, 403, 419, 429, 443, 472, , 476
ESP10, 384, 396, 410, 422, 434, 475, , 479
ESP10, 399, 412, 425, 438, 449, 477, , 481
ESP10, 398, 415, 430, 438, 448, 479, , 483
ESP10, 399, 413, 428, 438, 446, 481, , 485
ESP10, 402, 414, 428, 439, 448, 483, , 487
ESP10, 403, 415, 431, 439, 449, 485, , 489
ESP10, 422, 434, 449, 458, 468, 487, , 491
ESP10, 425, 437, 451, 460, 469, 489, , 493
ESP10, 402, 414, 426, 436, 446, 491, , 495
ESP10, 403, 414, 428, 436, 445, 493, , 497
ESP10, 403, 414, 428, 436, 445, 495, , 499
ESP10, 410, 422, 436, 443, 452, 497, , 501
ESP10, 409, 421, 435, 442, 451, 499, , 503
ESP10, 416, 429, 442, 449, 457, 502, , 506
ESP10, 415, 428, 441, 448, 456, 504, , 508
ESP10, 416, 429, 442, 449, 457, 506, , 510
ESP10, 416, 429, 442, 449, 457, 508, , 512
ESP10, 418, 432, 442, 450, 457, 510, , 514
ESP10, 418, 432, 441, 449, 457, 512, , 516
ESP10, 420, 433, 443, 451, 457, 514, , 518
ESP10, 421, 434, 443, 451, 458, 516, , 520
ESP10, 420, 435, 443, 451, 459, 518, , 522
ESP10, 422, 434, 442, 453, 458, 520, , 524
ESP10, 423, 435, 443, 453, 458, 522, , 526
ESP10, 424, 436, 443, 454, 458, 524, , 528
ESP10, 424, 436, 442, 453, 458, 526, , 530
ESP10, 426, 438, 446, 456, 462, 528, , 532
ESP10, 424, 435, 443, 452, 459, 531, , 535
ESP10, 423, 435, 444, 452, 459, 533, , 537
ESP10, 423, 434, 443, 453, 459, 535, , 539
ESP10, 422, 432, 441, 451, 457, 537, , 541
ESP10, 427, 434, 444, 454, 460, 539, , 543
ESP10, 426, 436, 444, 454, 459, 541, , 545
ESP10, 426, 437, 444, 454, 460, 543, , 547
ESP10, 427, 438, 445, 455, 461, 545, , 549
ESP10, 426, 436, 445, 453, 460, 547, , 551
ESP10, 427, 438, 445, 452, 459, 549, , 553
ESP10, 425, 437, 442, 450, 457, 551, , 555
ESP10, 426, 438, 444, 452, 457, 553, , 557
ESP10, 427, 440, 446, 455, 459, 555, , 559
ESP10, 427, 439, 446, 454, 459, 558, , 562
ESP10, 424, 437, 444, 451, 457, 560, , 564
ESP10, 423, 437, 443, 451, 456, 562, , 566
ESP10, 426, 440, 447, 454, 458, 564, , 568
ESP10, 426, 440, 447, 454, 458, 566, , 570
ESP10, 421, 434, 440, 447, 451, 568, , 572
ESP10, 427, 439, 445, 451, 455, 570, , 574
ESP10, 428, 440, 447, 453, 457, 572, , 576
ESP10, 430, 443, 449, 455, 459, 574, , 578
ESP10, 429, 442, 449, 455, 459, 576, , 580
ESP10, 428, 440, 448, 453, 457, 578, , 582
ESP10, 432, 443, 451, 456, 460, 580, , 584
ESP10, 431, 442, 451, 455, 459, 582, , 586
ESP10, 431, 442, 450, 454, 458, 585, , 589
ESP10, 432, 442, 449, 454, 457, 587, , 591
ESP10, 432, 442, 449, 454, 457, 589, , 593
ESP10, 433, 444, 451, 455, 458, 591, , 595
ESP10, 433, 443, 451, 455, 458, 593, , 597
ESP10, 433, 444, 450, 454, 457, 595, , 599
ESP10, 433, 443, 449, 453, 455, 597, , 601
ESP10, 434, 443, 449, 453, 456, 599, , 603
ESP10, 434, 442, 449, 452, 455, 601, , 605
ESP10, 435, 443, 449, 452, 455, 603, , 607
ESP10, 435, 444, 449, 453, 455, 605, , 609
ESP10, 435, 444, 450, 453, 455, 607, , 611
ESP10, 435, 444, 449, 452, 455, 609, , 613
ESP10, 436, 446, 450, 453, 456, 611, , 615
ESP10, 437, 446, 450, 454, 456, 614, , 618
ESP10, 437, 446, 451, 454, 456, 616, , 620
ESP10, 442, 448, 451, 455, 456, 618, , 622
ESP10, 442, 447, 450, 454, 456, 620, , 624
ESP10, 443, 448, 452, 455, 457, 622, , 626
ESP10, 443, 449, 453, 455, 457, 624, , 628
ESP10, 444, 449, 452, 455, 457, 626, , 630
ESP10, 445, 449, 452, 455, 457, 628, , 632
ESP10, 447, 449, 452, 455, 456, 630, , 634
ESP10, 447, 450, 453, 455, 457, 632, , 636
ESP10, 447, 449, 453, 455, 457, 634, , 638
ESP10, 448, 450, 453, 455, 457, 636, , 640
ESP10, 448, 450, 453, 455, 457, 638, , 642
ESP10, 448, 450, 453, 455, 457, 641, , 645
ESP10, 445, 447, 450, 452, 454, 643, , 647
ESP10, 445, 447, 450, 453, 455, 645, , 649
ESP10, 444, 446, 449, 452, 454, 647, , 651
ESP10, 444, 446, 449, 452, 454, 649, , 653
ESP10, 446, 448, 451, 453, 456, 651, , 655
ESP10, 446, 448, 451, 453, 455, 653, , 657
ESP10, 446, 448, 451, 453, 455, 655, , 659
ESP10, 445, 447, 450, 452, 455, 657, , 661
ESP10, 445, 447, 450, 452, 454, 659, , 663
ESP10, 444, 447, 450, 452, 454, 661, , 665
ESP10, 444, 447, 450, 452, 454, 663, , 667
ESP10, 445, 447, 450, 452, 455, 665, , 669
ESP10, 445, 448, 450, 453, 455, 667, , 671
ESP10, 445, 448, 450, 453, 455, 670, , 674
ESP10, 445, 448, 451, 453, 455, 672, , 676
ESP10, 445, 448, 451, 453, 455, 674, , 678
ESP10, 446, 448, 451, 453, 455, 676, , 680
ESP10, 446, 448, 451, 453, 455, 678, , 682
ESP10, 448, 450, 452, 454, 456, 680, , 684
ESP10, 448, 451, 452, 454, 456, 682, , 686
ESP10, 449, 451, 453, 455, 457, 684, , 688
ESP10, 449, 452, 454, 455, 457, 686, , 690
ESP10, 449, 452, 454, 455, 458, 688, , 692
ESP10, 450, 452, 454, 455, 458, 690, , 694
ESP10, 449, 452, 454, 455, 458, 692, , 696
ESP10, 449, 452, 454, 455, 457, 694, , 698
ESP10, 449, 452, 454, 455, 457, 697, , 701
ESP10, 450, 452, 454, 455, 457, 699, , 703
ESP10, 450, 452, 454, 455, 457, 701, , 705
ESP10, 450, 452, 454, 455, 457, 703, , 707
ESP10, 450, 452, 454, 456, 457, 705, , 709
ESP10, 450, 452, 454, 456, 457, 707, , 711
ESP10, 451, 453, 455, 457, 458, 709, , 713
ESP10, 452, 453, 455, 457, 458, 711, , 715
ESP10, 452, 454, 455, 457, 458, 713, , 717
ESP10, 452, 454, 456, 457, 458, 715, , 719
ESP10, 452, 454, 456, 457, 458, 717, , 721
ESP10, 453, 454, 456, 457, 459, 719, , 723
ESP10, 453, 455, 457, 458, 459, 721, , 725
ESP10, 454, 455, 457, 458, 460, 723, , 727
ESP10, 455, 456, 458, 459, 460, 726, , 730
ESP10, 455, 456, 458, 459, 460, 728, , 732
ESP10, 454, 456, 457, 459, 460, 730, , 734
ESP10, 454, 456, 457, 459, 460, 732, , 736
ESP10, 455, 457, 458, 459, 460, 734, , 738
Max Scale
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Scale To Last 45 Days
Show Min/Max Ensemble Volume
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ESP10
HEFS
ESP0
Data Files
/chpsesp/ensemble/natural/RODW1N_SQIN.ESPF10.csv
RODW1N_SQIN.ESPF0.csv|2026-08-18
RODW1N_SQIN.ESPF10.csv|2026-08-18
RODW1N_SQIN.ESPFM.csv|2026-08-18
APR-SEP
SKAGIT - ROSS RESERVOIR
(
RODW1
)
Forecasts for Water Year
2027
Natural Forecast
ESP with 10 Days QPF
Ensemble:
2026-08-18
Issued:
2026-08-18
Hide Forecast
Forecast
Period
Forecasts Are in KAF
30 Year
Average
(1991-2020)
90 %
50 %
%
Average
10 %
APR-SEP
960
1424
93
2117
1527
APR-JUL
795
1238
92
1852
1347
APR-AUG
898
1348
92
2039
1457
JAN-SEP
1259
1761
92
2527
1914
JAN-JUL
1089
1590
92
2226
1734
OCT-SEP
1506
2314
99
2990
2341
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/RODW1N_SQIN.ESPF10.csv
RODW1N_SQIN.ESPF0.csv|2026-08-18
RODW1N_SQIN.ESPF10.csv|2026-08-18
RODW1N_SQIN.ESPFM.csv|2026-08-18
APR-SEP
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ESP10,ESPM,ESP0
ESP10,ESPM,ESP0
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