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Archive:
Water Year
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COWLITZ - AT CASTLE ROCK
(
CASW1
)
Forecasts for Water Year
2026
Official Water Supply
ESP with 10 Days QPF
Ensemble:
2026-08-15
Issued:
2026-08-15
Hide Forecast
Forecast
Period
Forecasts Are in KAF
30 Year
Average
(1991-2020)
90 %
50 %
%
Average
10 %
APR-SEP
1587
1602
64
1640
2504
APR-JUL
1351
1351
61
1351
2213
APR-AUG
1465
1466
62
1469
2366
JAN-SEP
4342
4357
88
4395
4929
JAN-JUL
4107
4107
89
4107
4638
OCT-SEP
7154
7169
106
7207
6739
Experimental Water Supply
HEFS with 15 days EQPF
Ensemble:
2026-08-15
Issued:
2026-08-15
Hide Forecast
APR-SEP
1585
1600
64
1639
2504
APR-JUL
1351
1351
61
1351
2213
APR-AUG
1463
1465
62
1468
2366
JAN-SEP
4341
4356
88
4394
4929
JAN-JUL
4107
4107
89
4107
4638
OCT-SEP
7153
7168
106
7206
6739
Reference
ESP with 0 Days QPF
Ensemble:
2026-08-15
Issued:
2026-08-15
Hide Forecast
APR-SEP
1588
1605
64
1642
2504
APR-JUL
1351
1351
61
1351
2213
APR-AUG
1464
1466
62
1472
2366
JAN-SEP
4343
4360
88
4397
4929
JAN-JUL
4107
4107
89
4107
4638
OCT-SEP
7155
7172
106
7209
6739
Move the mouse over the desired "Forecast Period" to display a graph.
ESP10, 242, 289, 338, 387, 431, 70, , 74
ESP10, 242, 289, 338, 387, 431, 72, , 76
ESP10, 242, 289, 338, 387, 431, 74, , 78
ESP10, 242, 289, 338, 387, 431, 76, , 80
ESP10, 242, 289, 338, 387, 431, 78, , 82
ESP10, 242, 289, 338, 387, 431, 81, , 85
ESP10, 241, 288, 337, 385, 430, 83, , 87
ESP10, 241, 288, 337, 385, 430, 85, , 89
ESP10, 242, 288, 338, 386, 431, 87, , 91
ESP10, 242, 288, 338, 386, 430, 89, , 93
ESP10, 241, 288, 338, 386, 430, 91, , 95
ESP10, 241, 288, 337, 385, 430, 93, , 97
ESP10, 241, 288, 337, 385, 431, 95, , 99
ESP10, 241, 289, 338, 386, 432, 97, , 101
ESP10, 235, 281, 329, 377, 422, 99, , 103
ESP10, 234, 280, 329, 377, 422, 102, , 106
ESP10, 230, 277, 327, 376, 420, 104, , 108
ESP10, 230, 278, 327, 376, 423, 106, , 110
ESP10, 230, 278, 327, 376, 423, 108, , 112
ESP10, 231, 279, 330, 376, 423, 110, , 114
ESP10, 228, 277, 328, 374, 421, 112, , 116
ESP10, 232, 280, 330, 377, 424, 114, , 118
ESP10, 231, 279, 330, 376, 424, 116, , 120
ESP10, 231, 279, 330, 376, 424, 118, , 122
ESP10, 232, 280, 330, 376, 425, 120, , 124
ESP10, 232, 280, 330, 377, 427, 122, , 126
ESP10, 232, 280, 330, 377, 426, 125, , 129
ESP10, 232, 281, 330, 378, 428, 127, , 131
ESP10, 232, 281, 330, 378, 424, 129, , 133
ESP10, 231, 280, 330, 377, 422, 131, , 135
ESP10, 229, 278, 329, 375, 420, 133, , 137
ESP10, 231, 279, 330, 377, 421, 135, , 139
ESP10, 232, 279, 329, 377, 421, 137, , 141
ESP10, 235, 281, 330, 379, 423, 139, , 143
ESP10, 234, 281, 330, 379, 423, 141, , 145
ESP10, 235, 282, 330, 380, 424, 143, , 147
ESP10, 235, 281, 329, 380, 425, 145, , 149
ESP10, 233, 278, 327, 377, 422, 148, , 152
ESP10, 232, 277, 325, 376, 422, 150, , 154
ESP10, 234, 278, 325, 377, 425, 152, , 156
ESP10, 237, 281, 328, 379, 428, 154, , 158
ESP10, 240, 284, 330, 382, 429, 156, , 160
ESP10, 238, 283, 327, 381, 426, 158, , 162
ESP10, 245, 289, 333, 390, 432, 160, , 164
ESP10, 244, 288, 335, 389, 431, 162, , 166
ESP10, 243, 287, 335, 389, 430, 164, , 168
ESP10, 245, 288, 335, 390, 431, 166, , 170
ESP10, 249, 291, 337, 394, 433, 169, , 173
ESP10, 248, 291, 336, 394, 432, 171, , 175
ESP10, 249, 291, 336, 394, 432, 173, , 177
ESP10, 251, 292, 336, 392, 430, 175, , 179
ESP10, 251, 287, 336, 392, 430, 177, , 181
ESP10, 250, 289, 338, 390, 429, 179, , 183
ESP10, 254, 293, 342, 394, 431, 181, , 185
ESP10, 253, 291, 341, 393, 430, 183, , 187
ESP10, 255, 295, 344, 396, 432, 185, , 189
ESP10, 255, 294, 344, 395, 431, 187, , 191
ESP10, 254, 293, 343, 394, 430, 189, , 193
ESP10, 255, 295, 344, 394, 428, 192, , 196
ESP10, 250, 291, 341, 388, 423, 194, , 198
ESP10, 257, 298, 345, 394, 430, 196, , 200
ESP10, 260, 301, 349, 398, 436, 198, , 202
ESP10, 259, 303, 350, 397, 438, 200, , 204
ESP10, 262, 308, 358, 400, 440, 202, , 206
ESP10, 269, 314, 366, 407, 447, 204, , 208
ESP10, 267, 313, 366, 405, 445, 206, , 210
ESP10, 272, 318, 372, 409, 450, 208, , 212
ESP10, 275, 319, 373, 410, 455, 210, , 214
ESP10, 278, 321, 374, 410, 456, 212, , 216
ESP10, 273, 318, 369, 405, 451, 215, , 219
ESP10, 263, 307, 358, 392, 439, 217, , 221
ESP10, 261, 305, 356, 390, 437, 219, , 223
ESP10, 260, 304, 355, 391, 436, 221, , 225
ESP10, 267, 309, 359, 396, 441, 223, , 227
ESP10, 267, 310, 359, 396, 441, 225, , 229
ESP10, 269, 313, 359, 398, 441, 227, , 231
ESP10, 264, 308, 354, 393, 438, 229, , 233
ESP10, 263, 309, 357, 392, 438, 231, , 235
ESP10, 263, 309, 358, 393, 438, 233, , 237
ESP10, 260, 307, 357, 394, 437, 236, , 240
ESP10, 269, 317, 367, 402, 445, 238, , 242
ESP10, 267, 316, 366, 402, 443, 240, , 244
ESP10, 273, 321, 372, 410, 449, 242, , 246
ESP10, 273, 321, 372, 410, 451, 244, , 248
ESP10, 269, 316, 369, 407, 449, 246, , 250
ESP10, 261, 311, 366, 402, 445, 248, , 252
ESP10, 264, 313, 370, 404, 448, 250, , 254
ESP10, 269, 316, 374, 408, 450, 252, , 256
ESP10, 267, 315, 375, 409, 450, 254, , 258
ESP10, 274, 319, 377, 410, 451, 256, , 260
ESP10, 279, 323, 382, 412, 452, 259, , 263
ESP10, 275, 318, 378, 408, 449, 261, , 265
ESP10, 272, 313, 374, 403, 446, 263, , 267
ESP10, 271, 310, 371, 402, 443, 265, , 269
ESP10, 270, 309, 369, 405, 442, 267, , 271
ESP10, 264, 305, 367, 401, 438, 269, , 273
ESP10, 262, 303, 367, 400, 438, 271, , 275
ESP10, 263, 303, 368, 403, 440, 273, , 277
ESP10, 268, 310, 369, 406, 443, 275, , 279
ESP10, 260, 302, 360, 398, 436, 277, , 281
ESP10, 261, 310, 360, 399, 438, 279, , 283
ESP10, 261, 313, 360, 400, 438, 282, , 286
ESP10, 261, 315, 363, 401, 439, 284, , 288
ESP10, 260, 317, 366, 401, 443, 286, , 290
ESP10, 263, 321, 370, 404, 447, 288, , 292
ESP10, 262, 319, 373, 404, 446, 290, , 294
ESP10, 258, 316, 371, 402, 443, 292, , 296
ESP10, 264, 318, 375, 405, 445, 294, , 298
ESP10, 267, 320, 377, 407, 448, 296, , 300
ESP10, 277, 327, 382, 415, 451, 298, , 302
ESP10, 277, 325, 381, 413, 450, 300, , 304
ESP10, 280, 326, 384, 415, 451, 303, , 307
ESP10, 281, 327, 385, 418, 451, 305, , 309
ESP10, 283, 329, 388, 421, 453, 307, , 311
ESP10, 286, 329, 393, 427, 457, 309, , 313
ESP10, 287, 334, 395, 429, 460, 311, , 315
ESP10, 289, 335, 395, 429, 459, 313, , 317
ESP10, 286, 333, 393, 426, 454, 315, , 319
ESP10, 288, 335, 399, 429, 457, 317, , 321
ESP10, 289, 337, 403, 433, 458, 319, , 323
ESP10, 294, 344, 410, 439, 465, 321, , 325
ESP10, 291, 336, 403, 431, 458, 323, , 327
ESP10, 292, 334, 401, 430, 457, 326, , 330
ESP10, 296, 340, 404, 435, 461, 328, , 332
ESP10, 298, 345, 407, 437, 468, 330, , 334
ESP10, 296, 341, 405, 435, 464, 332, , 336
ESP10, 292, 337, 406, 433, 463, 334, , 338
ESP10, 299, 341, 414, 438, 469, 336, , 340
ESP10, 298, 337, 412, 434, 464, 338, , 342
ESP10, 298, 338, 412, 436, 466, 340, , 344
ESP10, 296, 340, 411, 437, 466, 342, , 346
ESP10, 295, 344, 413, 438, 469, 344, , 348
ESP10, 286, 336, 407, 427, 462, 346, , 350
ESP10, 289, 338, 410, 429, 465, 349, , 353
ESP10, 292, 338, 406, 428, 464, 351, , 355
ESP10, 284, 329, 397, 424, 456, 353, , 357
ESP10, 289, 333, 403, 426, 460, 355, , 359
ESP10, 297, 338, 411, 432, 465, 357, , 361
ESP10, 279, 324, 399, 419, 452, 359, , 363
ESP10, 286, 330, 405, 425, 460, 361, , 365
ESP10, 285, 325, 402, 425, 459, 363, , 367
ESP10, 290, 330, 406, 431, 468, 365, , 369
ESP10, 294, 335, 408, 436, 466, 367, , 371
ESP10, 302, 344, 413, 443, 473, 370, , 374
ESP10, 307, 349, 418, 448, 478, 372, , 376
ESP10, 300, 342, 410, 442, 470, 374, , 378
ESP10, 305, 339, 407, 440, 467, 376, , 380
ESP10, 302, 337, 404, 438, 466, 378, , 382
ESP10, 301, 336, 406, 437, 464, 380, , 384
ESP10, 309, 345, 411, 444, 471, 382, , 386
ESP10, 310, 348, 414, 447, 475, 384, , 388
ESP10, 307, 346, 411, 444, 473, 386, , 390
ESP10, 295, 334, 403, 435, 461, 388, , 392
ESP10, 286, 321, 396, 423, 449, 390, , 394
ESP10, 286, 319, 397, 420, 445, 393, , 397
ESP10, 285, 315, 393, 416, 441, 395, , 399
ESP10, 284, 313, 390, 417, 439, 397, , 401
ESP10, 284, 310, 387, 417, 438, 399, , 403
ESP10, 276, 307, 383, 418, 432, 401, , 405
ESP10, 290, 318, 391, 424, 444, 403, , 407
ESP10, 277, 304, 377, 410, 434, 405, , 409
ESP10, 280, 308, 370, 403, 430, 407, , 411
ESP10, 289, 323, 391, 421, 450, 409, , 413
ESP10, 288, 321, 389, 419, 452, 411, , 415
ESP10, 285, 316, 389, 417, 453, 413, , 417
ESP10, 274, 306, 379, 404, 440, 416, , 420
ESP10, 272, 306, 376, 403, 439, 418, , 422
ESP10, 275, 313, 386, 410, 445, 420, , 424
ESP10, 281, 322, 389, 416, 449, 422, , 426
ESP10, 283, 327, 389, 419, 447, 424, , 428
ESP10, 287, 328, 388, 417, 446, 426, , 430
ESP10, 294, 333, 388, 418, 449, 428, , 432
ESP10, 299, 337, 395, 419, 453, 430, , 434
ESP10, 297, 326, 386, 410, 447, 432, , 436
ESP10, 299, 330, 385, 410, 447, 434, , 438
ESP10, 306, 344, 393, 417, 453, 437, , 441
ESP10, 300, 340, 384, 413, 443, 439, , 443
ESP10, 307, 345, 390, 422, 448, 441, , 445
ESP10, 309, 346, 394, 427, 449, 443, , 447
ESP10, 312, 344, 394, 426, 448, 445, , 449
ESP10, 317, 349, 400, 431, 453, 447, , 451
ESP10, 322, 358, 405, 439, 459, 449, , 453
ESP10, 320, 359, 404, 440, 457, 451, , 455
ESP10, 337, 367, 412, 448, 462, 453, , 457
ESP10, 338, 366, 412, 450, 464, 455, , 459
ESP10, 340, 368, 412, 451, 467, 457, , 461
ESP10, 344, 372, 418, 453, 471, 460, , 464
ESP10, 357, 383, 431, 464, 483, 462, , 466
ESP10, 346, 374, 421, 456, 475, 464, , 468
ESP10, 337, 359, 405, 442, 461, 466, , 470
ESP10, 341, 356, 401, 438, 457, 468, , 472
ESP10, 337, 352, 395, 435, 452, 470, , 474
ESP10, 341, 354, 392, 434, 450, 472, , 476
ESP10, 349, 366, 395, 437, 453, 474, , 478
ESP10, 348, 366, 402, 436, 451, 476, , 480
ESP10, 353, 374, 407, 440, 455, 478, , 482
ESP10, 356, 387, 414, 445, 459, 480, , 484
ESP10, 356, 389, 417, 447, 459, 483, , 487
ESP10, 360, 390, 417, 446, 457, 485, , 489
ESP10, 361, 394, 416, 447, 456, 487, , 491
ESP10, 367, 400, 417, 448, 457, 489, , 493
ESP10, 367, 399, 417, 446, 455, 491, , 495
ESP10, 366, 396, 416, 445, 456, 493, , 497
ESP10, 366, 398, 417, 445, 455, 495, , 499
ESP10, 374, 405, 421, 446, 456, 497, , 501
ESP10, 378, 410, 431, 450, 458, 499, , 503
ESP10, 375, 410, 428, 447, 455, 501, , 505
ESP10, 379, 414, 429, 448, 456, 504, , 508
ESP10, 383, 417, 430, 448, 456, 506, , 510
ESP10, 384, 416, 433, 448, 456, 508, , 512
ESP10, 385, 420, 435, 449, 458, 510, , 514
ESP10, 388, 421, 437, 451, 460, 512, , 516
ESP10, 388, 422, 438, 454, 459, 514, , 518
ESP10, 391, 422, 439, 455, 459, 516, , 520
ESP10, 395, 425, 441, 455, 459, 518, , 522
ESP10, 400, 428, 447, 457, 461, 520, , 524
ESP10, 402, 429, 448, 457, 461, 522, , 526
ESP10, 402, 429, 449, 457, 460, 524, , 528
ESP10, 401, 428, 450, 458, 460, 527, , 531
ESP10, 402, 428, 451, 458, 461, 529, , 533
ESP10, 405, 431, 453, 460, 464, 531, , 535
ESP10, 406, 431, 450, 459, 463, 533, , 537
ESP10, 403, 432, 449, 458, 462, 535, , 539
ESP10, 400, 432, 451, 460, 463, 537, , 541
ESP10, 392, 424, 443, 454, 458, 539, , 543
ESP10, 398, 428, 445, 456, 459, 541, , 545
ESP10, 389, 421, 441, 449, 453, 543, , 547
ESP10, 387, 417, 437, 446, 450, 545, , 549
ESP10, 401, 421, 440, 448, 451, 547, , 551
ESP10, 406, 422, 442, 450, 454, 550, , 554
ESP10, 402, 415, 436, 447, 450, 552, , 556
ESP10, 412, 428, 443, 450, 452, 554, , 558
ESP10, 412, 426, 441, 449, 452, 556, , 560
ESP10, 418, 431, 445, 451, 454, 558, , 562
ESP10, 421, 437, 448, 453, 455, 560, , 564
ESP10, 423, 439, 447, 452, 455, 562, , 566
ESP10, 423, 438, 446, 451, 453, 564, , 568
ESP10, 424, 438, 446, 450, 452, 566, , 570
ESP10, 431, 443, 450, 454, 456, 568, , 572
ESP10, 432, 444, 450, 454, 456, 571, , 575
ESP10, 437, 446, 454, 459, 461, 573, , 577
ESP10, 438, 449, 454, 459, 461, 575, , 579
ESP10, 439, 451, 456, 459, 461, 577, , 581
ESP10, 435, 443, 447, 451, 453, 579, , 583
ESP10, 437, 447, 450, 453, 454, 581, , 585
ESP10, 434, 445, 449, 451, 452, 583, , 587
ESP10, 436, 447, 450, 452, 454, 585, , 589
ESP10, 436, 450, 453, 456, 458, 587, , 591
ESP10, 434, 447, 450, 452, 454, 589, , 593
ESP10, 432, 440, 443, 445, 446, 591, , 595
ESP10, 435, 442, 444, 446, 447, 594, , 598
ESP10, 436, 443, 445, 447, 448, 596, , 600
ESP10, 437, 444, 446, 448, 448, 598, , 602
ESP10, 431, 437, 440, 442, 443, 600, , 604
ESP10, 432, 437, 441, 443, 443, 602, , 606
ESP10, 432, 438, 441, 443, 443, 604, , 608
ESP10, 432, 438, 441, 443, 443, 606, , 610
ESP10, 433, 439, 442, 444, 444, 608, , 612
ESP10, 433, 439, 442, 444, 444, 610, , 614
ESP10, 433, 439, 442, 444, 444, 612, , 616
ESP10, 440, 443, 445, 446, 447, 614, , 618
ESP10, 439, 443, 445, 446, 447, 617, , 621
ESP10, 438, 442, 444, 445, 446, 619, , 623
ESP10, 438, 441, 444, 444, 445, 621, , 625
ESP10, 439, 442, 444, 445, 446, 623, , 627
ESP10, 437, 439, 441, 443, 443, 625, , 629
ESP10, 437, 440, 442, 443, 444, 627, , 631
ESP10, 440, 443, 445, 446, 447, 629, , 633
ESP10, 440, 442, 444, 445, 446, 631, , 635
ESP10, 439, 441, 444, 444, 445, 633, , 637
ESP10, 438, 441, 443, 444, 445, 635, , 639
ESP10, 438, 441, 443, 444, 445, 638, , 642
ESP10, 444, 448, 450, 452, 453, 640, , 644
ESP10, 444, 447, 449, 450, 450, 642, , 646
ESP10, 445, 447, 449, 450, 451, 644, , 648
ESP10, 446, 447, 449, 450, 451, 646, , 650
ESP10, 445, 447, 449, 450, 451, 648, , 652
ESP10, 445, 447, 449, 450, 451, 650, , 654
ESP10, 446, 447, 450, 450, 451, 652, , 656
ESP10, 446, 448, 450, 451, 452, 654, , 658
ESP10, 446, 448, 450, 451, 452, 656, , 660
ESP10, 446, 448, 450, 451, 452, 658, , 662
ESP10, 446, 448, 450, 451, 452, 661, , 665
ESP10, 446, 448, 450, 451, 452, 663, , 667
ESP10, 446, 448, 450, 451, 452, 665, , 669
ESP10, 446, 448, 450, 451, 452, 667, , 671
ESP10, 446, 448, 450, 451, 452, 669, , 673
ESP10, 447, 449, 451, 451, 452, 671, , 675
ESP10, 447, 449, 451, 452, 453, 673, , 677
ESP10, 447, 449, 451, 452, 453, 675, , 679
ESP10, 448, 449, 452, 452, 453, 677, , 681
ESP10, 439, 442, 444, 446, 447, 679, , 683
ESP10, 447, 449, 451, 452, 453, 681, , 685
ESP10, 448, 450, 452, 453, 453, 684, , 688
ESP10, 449, 451, 453, 454, 455, 686, , 690
ESP10, 449, 451, 453, 455, 456, 688, , 692
ESP10, 449, 451, 453, 455, 456, 690, , 694
ESP10, 446, 447, 449, 450, 451, 692, , 696
ESP10, 447, 449, 451, 452, 453, 694, , 698
ESP10, 448, 450, 452, 453, 454, 696, , 700
ESP10, 448, 450, 451, 452, 453, 698, , 702
ESP10, 448, 450, 452, 453, 454, 700, , 704
ESP10, 448, 450, 452, 453, 454, 702, , 706
ESP10, 449, 451, 453, 455, 456, 705, , 709
ESP10, 449, 452, 454, 456, 457, 707, , 711
ESP10, 450, 452, 455, 456, 457, 709, , 713
ESP10, 449, 452, 454, 455, 456, 711, , 715
ESP10, 449, 452, 454, 455, 456, 713, , 717
ESP10, 449, 452, 454, 455, 456, 715, , 719
ESP10, 449, 452, 454, 455, 456, 717, , 721
ESP10, 449, 452, 454, 455, 456, 719, , 723
ESP10, 447, 449, 451, 452, 452, 721, , 725
ESP10, 447, 449, 451, 452, 453, 723, , 727
ESP10, 447, 449, 451, 452, 453, 725, , 729
ESP10, 441, 444, 446, 447, 448, 728, , 732
ESP10, 441, 444, 446, 448, 448, 730, , 734
ESP10, 441, 444, 447, 448, 449, 732, , 736
ESP10, 441, 444, 447, 448, 448, 734, , 738
Max Scale
Scale To Data
Scale To Last 45 Days
Show Min/Max Ensemble Volume
Show Tooltips Help
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ESP10
HEFS
ESP0
Data Files
/chpsesp/ensemble/watersupply/CASW1W_SQIN.ESPF10.csv
CASW1W_SQIN.ESPF0.csv|2026-08-15
CASW1W_SQIN.ESPF10.csv|2026-08-15
CASW1W_SQIN.ESPFM.csv|2026-08-15
APR-SEP
COWLITZ - AT CASTLE ROCK
(
CASW1
)
Forecasts for Water Year
2027
Official Water Supply
ESP with 10 Days QPF
Ensemble:
2026-08-15
Issued:
2026-08-15
Hide Forecast
Forecast
Period
Forecasts Are in KAF
30 Year
Average
(1991-2020)
90 %
50 %
%
Average
10 %
APR-SEP
1772
2436
97
3209
2504
APR-JUL
1569
2153
97
2720
2213
APR-AUG
1678
2286
97
2967
2366
JAN-SEP
3678
4813
98
6081
4929
JAN-JUL
3483
4479
97
5660
4638
OCT-SEP
4973
6501
96
8426
6739
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/CASW1W_SQIN.ESPF10.csv
CASW1W_SQIN.ESPF0.csv|2026-08-15
CASW1W_SQIN.ESPF10.csv|2026-08-15
CASW1W_SQIN.ESPFM.csv|2026-08-15
APR-SEP
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ESP10,ESPM,ESP0
ESP10,ESPM,ESP0
Last Forecast
