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Water Year
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CHELAN - LAKE CHELAN DAM
(
CHDW1
)
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
830
831
70
838
1185
APR-JUL
783
783
74
783
1065
APR-AUG
816
816
71
816
1142
JAN-SEP
1238
1239
90
1246
1381
JAN-JUL
1191
1191
94
1191
1261
OCT-SEP
1693
1694
106
1701
1603
Experimental
HEFS with 15 days EQPF
Ensemble:
2026-08-16
Issued:
2026-08-16
Hide Forecast
APR-SEP
830
831
70
841
1185
APR-JUL
783
783
74
783
1065
APR-AUG
815
816
71
816
1142
JAN-SEP
1238
1239
90
1249
1381
JAN-JUL
1191
1191
94
1191
1261
OCT-SEP
1693
1694
106
1704
1603
Reference
ESP with 0 Days QPF
Ensemble:
2026-08-16
Issued:
2026-08-16
Hide Forecast
APR-SEP
830
831
70
840
1185
APR-JUL
783
783
74
783
1065
APR-AUG
815
816
71
817
1142
JAN-SEP
1238
1239
90
1248
1381
JAN-JUL
1191
1191
94
1191
1261
OCT-SEP
1693
1694
106
1703
1603
Move the mouse over the desired "Forecast Period" to display a graph.
ESP10, 257, 341, 389, 424, 452, 70, , 74
ESP10, 258, 341, 386, 423, 452, 72, , 76
ESP10, 259, 341, 388, 424, 452, 74, , 78
ESP10, 262, 341, 388, 424, 452, 76, , 80
ESP10, 266, 346, 392, 427, 454, 78, , 82
ESP10, 266, 347, 392, 427, 455, 81, , 85
ESP10, 268, 346, 391, 426, 455, 83, , 87
ESP10, 270, 348, 395, 427, 455, 85, , 89
ESP10, 270, 347, 395, 426, 455, 87, , 91
ESP10, 268, 345, 390, 423, 452, 89, , 93
ESP10, 270, 346, 393, 426, 453, 91, , 95
ESP10, 270, 346, 393, 428, 456, 93, , 97
ESP10, 271, 346, 396, 428, 457, 95, , 99
ESP10, 271, 345, 395, 429, 457, 97, , 101
ESP10, 267, 343, 392, 426, 456, 99, , 103
ESP10, 257, 333, 384, 419, 449, 101, , 105
ESP10, 252, 329, 379, 414, 445, 103, , 107
ESP10, 251, 329, 378, 413, 446, 106, , 110
ESP10, 257, 334, 383, 416, 451, 108, , 112
ESP10, 256, 336, 380, 416, 450, 110, , 114
ESP10, 250, 329, 372, 409, 447, 112, , 116
ESP10, 256, 336, 376, 413, 453, 114, , 118
ESP10, 243, 328, 365, 405, 445, 116, , 120
ESP10, 250, 334, 372, 418, 449, 118, , 122
ESP10, 252, 336, 374, 423, 451, 120, , 124
ESP10, 246, 333, 369, 420, 447, 122, , 126
ESP10, 246, 331, 370, 419, 447, 124, , 128
ESP10, 252, 334, 373, 421, 449, 126, , 130
ESP10, 250, 330, 369, 418, 445, 129, , 133
ESP10, 246, 320, 363, 411, 439, 131, , 135
ESP10, 237, 309, 360, 404, 431, 133, , 137
ESP10, 244, 320, 367, 408, 435, 135, , 139
ESP10, 245, 324, 370, 411, 435, 137, , 141
ESP10, 257, 338, 380, 422, 444, 139, , 143
ESP10, 258, 338, 379, 420, 443, 141, , 145
ESP10, 258, 337, 381, 419, 443, 143, , 147
ESP10, 260, 344, 383, 420, 443, 145, , 149
ESP10, 256, 342, 378, 418, 440, 147, , 151
ESP10, 259, 344, 387, 421, 442, 149, , 153
ESP10, 257, 343, 384, 420, 442, 151, , 155
ESP10, 259, 342, 384, 423, 444, 154, , 158
ESP10, 267, 346, 385, 428, 446, 156, , 160
ESP10, 267, 345, 384, 428, 445, 158, , 162
ESP10, 266, 346, 386, 426, 447, 160, , 164
ESP10, 263, 344, 385, 425, 447, 162, , 166
ESP10, 264, 345, 386, 425, 451, 164, , 168
ESP10, 254, 336, 379, 417, 445, 166, , 170
ESP10, 261, 343, 389, 427, 453, 168, , 172
ESP10, 262, 340, 385, 424, 453, 170, , 174
ESP10, 269, 344, 387, 426, 455, 172, , 176
ESP10, 273, 343, 382, 423, 451, 174, , 178
ESP10, 285, 344, 382, 422, 450, 177, , 181
ESP10, 286, 343, 386, 420, 453, 179, , 183
ESP10, 304, 358, 402, 437, 466, 181, , 185
ESP10, 304, 354, 403, 434, 463, 183, , 187
ESP10, 306, 354, 401, 432, 463, 185, , 189
ESP10, 303, 349, 398, 428, 459, 187, , 191
ESP10, 301, 347, 397, 428, 457, 189, , 193
ESP10, 306, 354, 403, 432, 460, 191, , 195
ESP10, 300, 351, 402, 437, 461, 193, , 197
ESP10, 295, 347, 398, 436, 458, 195, , 199
ESP10, 306, 356, 405, 440, 468, 197, , 201
ESP10, 283, 338, 387, 420, 449, 199, , 203
ESP10, 271, 328, 376, 409, 437, 202, , 206
ESP10, 266, 326, 375, 408, 436, 204, , 208
ESP10, 258, 314, 369, 399, 429, 206, , 210
ESP10, 282, 330, 379, 411, 443, 208, , 212
ESP10, 271, 322, 373, 403, 436, 210, , 214
ESP10, 250, 299, 356, 389, 419, 212, , 216
ESP10, 245, 291, 348, 386, 411, 214, , 218
ESP10, 257, 300, 356, 393, 421, 216, , 220
ESP10, 274, 315, 369, 403, 433, 218, , 222
ESP10, 273, 313, 369, 402, 430, 220, , 224
ESP10, 275, 313, 369, 400, 430, 222, , 226
ESP10, 277, 314, 372, 401, 431, 225, , 229
ESP10, 273, 311, 368, 397, 428, 227, , 231
ESP10, 266, 306, 360, 392, 421, 229, , 233
ESP10, 256, 296, 351, 384, 414, 231, , 235
ESP10, 253, 300, 348, 385, 412, 233, , 237
ESP10, 248, 300, 344, 383, 409, 235, , 239
ESP10, 261, 313, 354, 394, 419, 237, , 241
ESP10, 264, 319, 358, 397, 422, 239, , 243
ESP10, 275, 328, 368, 409, 428, 241, , 245
ESP10, 276, 334, 368, 408, 427, 243, , 247
ESP10, 272, 329, 367, 404, 423, 245, , 249
ESP10, 265, 323, 362, 399, 417, 248, , 252
ESP10, 274, 328, 370, 406, 427, 250, , 254
ESP10, 286, 331, 374, 411, 434, 252, , 256
ESP10, 291, 331, 375, 412, 436, 254, , 258
ESP10, 275, 320, 363, 401, 423, 256, , 260
ESP10, 277, 323, 367, 404, 425, 258, , 262
ESP10, 281, 327, 370, 407, 429, 260, , 264
ESP10, 274, 324, 367, 401, 424, 262, , 266
ESP10, 277, 325, 367, 401, 423, 264, , 268
ESP10, 283, 332, 374, 410, 428, 266, , 270
ESP10, 286, 335, 375, 411, 429, 268, , 272
ESP10, 290, 336, 376, 412, 430, 270, , 274
ESP10, 296, 335, 377, 413, 429, 273, , 277
ESP10, 282, 329, 369, 403, 423, 275, , 279
ESP10, 281, 334, 370, 402, 425, 277, , 281
ESP10, 283, 336, 372, 403, 425, 279, , 283
ESP10, 290, 340, 375, 405, 427, 281, , 285
ESP10, 289, 341, 377, 403, 426, 283, , 287
ESP10, 293, 344, 380, 405, 427, 285, , 289
ESP10, 295, 348, 383, 410, 426, 287, , 291
ESP10, 296, 345, 383, 407, 422, 289, , 293
ESP10, 295, 341, 378, 402, 417, 291, , 295
ESP10, 302, 347, 384, 409, 423, 293, , 297
ESP10, 303, 350, 387, 410, 429, 296, , 300
ESP10, 314, 358, 394, 416, 437, 298, , 302
ESP10, 318, 358, 393, 415, 435, 300, , 304
ESP10, 325, 367, 397, 419, 441, 302, , 306
ESP10, 325, 369, 398, 418, 441, 304, , 308
ESP10, 334, 378, 403, 427, 447, 306, , 310
ESP10, 336, 375, 400, 424, 446, 308, , 312
ESP10, 329, 368, 394, 417, 440, 310, , 314
ESP10, 329, 368, 393, 416, 443, 312, , 316
ESP10, 329, 367, 393, 417, 445, 314, , 318
ESP10, 336, 370, 397, 422, 447, 316, , 320
ESP10, 337, 369, 397, 422, 446, 318, , 322
ESP10, 337, 369, 396, 423, 445, 321, , 325
ESP10, 335, 370, 394, 421, 442, 323, , 327
ESP10, 334, 365, 389, 414, 436, 325, , 329
ESP10, 333, 366, 391, 414, 437, 327, , 331
ESP10, 332, 364, 390, 412, 436, 329, , 333
ESP10, 334, 365, 391, 412, 437, 331, , 335
ESP10, 330, 361, 386, 410, 434, 333, , 337
ESP10, 339, 371, 394, 418, 440, 335, , 339
ESP10, 340, 376, 396, 419, 441, 337, , 341
ESP10, 345, 379, 398, 420, 442, 339, , 343
ESP10, 349, 378, 398, 422, 443, 341, , 345
ESP10, 354, 380, 404, 425, 444, 344, , 348
ESP10, 348, 373, 397, 420, 438, 346, , 350
ESP10, 353, 379, 397, 421, 438, 348, , 352
ESP10, 352, 379, 396, 421, 436, 350, , 354
ESP10, 347, 377, 390, 415, 431, 352, , 356
ESP10, 347, 378, 391, 416, 431, 354, , 358
ESP10, 358, 385, 399, 423, 440, 356, , 360
ESP10, 352, 379, 393, 419, 433, 358, , 362
ESP10, 357, 384, 402, 425, 437, 360, , 364
ESP10, 352, 380, 400, 423, 433, 362, , 366
ESP10, 357, 382, 404, 425, 434, 364, , 368
ESP10, 355, 380, 404, 423, 432, 366, , 370
ESP10, 374, 404, 421, 441, 448, 369, , 373
ESP10, 379, 410, 427, 446, 453, 371, , 375
ESP10, 386, 413, 430, 447, 454, 373, , 377
ESP10, 393, 418, 435, 453, 459, 375, , 379
ESP10, 391, 416, 434, 450, 456, 377, , 381
ESP10, 392, 415, 432, 450, 455, 379, , 383
ESP10, 390, 415, 433, 447, 452, 381, , 385
ESP10, 393, 414, 434, 447, 454, 383, , 387
ESP10, 390, 411, 431, 443, 450, 385, , 389
ESP10, 383, 407, 425, 437, 445, 387, , 391
ESP10, 382, 404, 424, 435, 443, 389, , 393
ESP10, 374, 395, 415, 427, 434, 392, , 396
ESP10, 370, 394, 411, 424, 432, 394, , 398
ESP10, 363, 388, 403, 418, 424, 396, , 400
ESP10, 358, 382, 398, 413, 417, 398, , 402
ESP10, 355, 377, 392, 408, 413, 400, , 404
ESP10, 369, 393, 405, 421, 426, 402, , 406
ESP10, 366, 392, 404, 418, 425, 404, , 408
ESP10, 354, 380, 393, 407, 414, 406, , 410
ESP10, 350, 375, 389, 404, 410, 408, , 412
ESP10, 350, 373, 387, 403, 414, 410, , 414
ESP10, 351, 371, 387, 400, 413, 412, , 416
ESP10, 356, 370, 386, 399, 413, 414, , 418
ESP10, 352, 366, 381, 395, 411, 417, , 421
ESP10, 353, 366, 381, 396, 412, 419, , 423
ESP10, 356, 368, 384, 399, 415, 421, , 425
ESP10, 356, 370, 384, 399, 415, 423, , 427
ESP10, 360, 374, 390, 404, 420, 425, , 429
ESP10, 360, 376, 389, 405, 420, 427, , 431
ESP10, 357, 372, 385, 401, 416, 429, , 433
ESP10, 355, 374, 383, 398, 412, 431, , 435
ESP10, 351, 369, 379, 395, 408, 433, , 437
ESP10, 357, 377, 388, 401, 413, 435, , 439
ESP10, 355, 379, 389, 401, 412, 437, , 441
ESP10, 356, 379, 390, 400, 413, 440, , 444
ESP10, 360, 382, 394, 402, 416, 442, , 446
ESP10, 360, 382, 394, 403, 418, 444, , 448
ESP10, 360, 382, 394, 404, 418, 446, , 450
ESP10, 356, 377, 388, 397, 411, 448, , 452
ESP10, 358, 378, 389, 399, 413, 450, , 454
ESP10, 360, 381, 393, 401, 416, 452, , 456
ESP10, 360, 385, 394, 402, 416, 454, , 458
ESP10, 371, 395, 407, 415, 427, 456, , 460
ESP10, 386, 411, 423, 432, 443, 458, , 462
ESP10, 391, 412, 424, 433, 445, 460, , 464
ESP10, 389, 410, 423, 431, 442, 462, , 466
ESP10, 384, 406, 419, 427, 438, 465, , 469
ESP10, 383, 406, 419, 427, 436, 467, , 471
ESP10, 396, 411, 421, 432, 437, 469, , 473
ESP10, 395, 409, 420, 430, 437, 471, , 475
ESP10, 395, 409, 419, 428, 435, 473, , 477
ESP10, 399, 411, 420, 429, 436, 475, , 479
ESP10, 403, 413, 422, 431, 436, 477, , 481
ESP10, 403, 415, 422, 431, 436, 479, , 483
ESP10, 405, 415, 422, 433, 437, 481, , 485
ESP10, 404, 415, 423, 432, 436, 483, , 487
ESP10, 405, 416, 424, 433, 437, 485, , 489
ESP10, 407, 417, 425, 434, 438, 488, , 492
ESP10, 413, 422, 432, 441, 447, 490, , 494
ESP10, 416, 423, 433, 441, 447, 492, , 496
ESP10, 419, 426, 435, 443, 449, 494, , 498
ESP10, 418, 426, 433, 442, 448, 496, , 500
ESP10, 419, 427, 433, 443, 448, 498, , 502
ESP10, 419, 427, 434, 441, 446, 500, , 504
ESP10, 422, 430, 435, 443, 447, 502, , 506
ESP10, 435, 443, 447, 455, 458, 504, , 508
ESP10, 423, 427, 434, 440, 445, 506, , 510
ESP10, 424, 427, 434, 440, 444, 508, , 512
ESP10, 425, 429, 434, 441, 445, 510, , 514
ESP10, 425, 430, 436, 441, 446, 513, , 517
ESP10, 425, 430, 436, 442, 445, 515, , 519
ESP10, 436, 441, 447, 453, 455, 517, , 521
ESP10, 425, 430, 437, 443, 445, 519, , 523
ESP10, 417, 423, 428, 435, 437, 521, , 525
ESP10, 418, 425, 430, 436, 438, 523, , 527
ESP10, 419, 427, 431, 438, 441, 525, , 529
ESP10, 422, 429, 432, 438, 442, 527, , 531
ESP10, 423, 429, 432, 439, 442, 529, , 533
ESP10, 428, 434, 437, 443, 447, 531, , 535
ESP10, 424, 430, 434, 440, 444, 533, , 537
ESP10, 424, 429, 433, 440, 445, 536, , 540
ESP10, 430, 434, 438, 445, 450, 538, , 542
ESP10, 428, 431, 436, 442, 448, 540, , 544
ESP10, 427, 430, 435, 441, 445, 542, , 546
ESP10, 427, 430, 435, 441, 444, 544, , 548
ESP10, 427, 430, 436, 439, 444, 546, , 550
ESP10, 428, 430, 437, 440, 445, 548, , 552
ESP10, 426, 430, 435, 438, 443, 550, , 554
ESP10, 423, 426, 431, 435, 439, 552, , 556
ESP10, 423, 426, 430, 435, 438, 554, , 558
ESP10, 428, 432, 437, 440, 443, 556, , 560
ESP10, 428, 432, 438, 439, 443, 558, , 562
ESP10, 427, 431, 436, 437, 441, 561, , 565
ESP10, 428, 432, 436, 438, 441, 563, , 567
ESP10, 427, 431, 435, 436, 439, 565, , 569
ESP10, 429, 432, 436, 438, 440, 567, , 571
ESP10, 429, 433, 437, 439, 441, 569, , 573
ESP10, 423, 428, 432, 434, 436, 571, , 575
ESP10, 429, 433, 435, 437, 439, 573, , 577
ESP10, 430, 435, 436, 439, 440, 575, , 579
ESP10, 431, 436, 438, 440, 441, 577, , 581
ESP10, 432, 436, 438, 441, 442, 579, , 583
ESP10, 431, 435, 437, 439, 440, 581, , 585
ESP10, 432, 436, 439, 441, 442, 584, , 588
ESP10, 430, 435, 438, 440, 440, 586, , 590
ESP10, 428, 432, 435, 437, 438, 588, , 592
ESP10, 429, 432, 435, 436, 437, 590, , 594
ESP10, 429, 433, 435, 437, 438, 592, , 596
ESP10, 428, 432, 435, 436, 437, 594, , 598
ESP10, 428, 432, 434, 436, 437, 596, , 600
ESP10, 428, 432, 435, 436, 437, 598, , 602
ESP10, 428, 431, 433, 435, 435, 600, , 604
ESP10, 429, 431, 434, 435, 436, 602, , 606
ESP10, 430, 431, 433, 435, 436, 604, , 608
ESP10, 431, 432, 434, 435, 436, 607, , 611
ESP10, 430, 431, 433, 434, 435, 609, , 613
ESP10, 430, 432, 433, 434, 435, 611, , 615
ESP10, 430, 432, 434, 435, 435, 613, , 617
ESP10, 430, 432, 433, 434, 435, 615, , 619
ESP10, 430, 432, 433, 434, 435, 617, , 621
ESP10, 430, 432, 433, 434, 435, 619, , 623
ESP10, 431, 433, 434, 435, 435, 621, , 625
ESP10, 430, 432, 433, 434, 435, 623, , 627
ESP10, 430, 432, 433, 434, 434, 625, , 629
ESP10, 431, 432, 434, 435, 435, 627, , 631
ESP10, 430, 431, 432, 434, 434, 629, , 633
ESP10, 431, 432, 433, 434, 435, 632, , 636
ESP10, 429, 430, 431, 431, 432, 634, , 638
ESP10, 429, 430, 431, 431, 432, 636, , 640
ESP10, 429, 430, 431, 432, 432, 638, , 642
ESP10, 430, 430, 431, 432, 432, 640, , 644
ESP10, 430, 431, 431, 432, 432, 642, , 646
ESP10, 428, 429, 430, 430, 430, 644, , 648
ESP10, 428, 429, 429, 430, 430, 646, , 650
ESP10, 428, 429, 430, 430, 431, 648, , 652
ESP10, 428, 429, 430, 430, 430, 650, , 654
ESP10, 428, 429, 429, 430, 430, 652, , 656
ESP10, 426, 427, 428, 428, 429, 655, , 659
ESP10, 427, 428, 428, 429, 429, 657, , 661
ESP10, 427, 428, 428, 429, 429, 659, , 663
ESP10, 426, 427, 427, 428, 428, 661, , 665
ESP10, 426, 427, 427, 428, 428, 663, , 667
ESP10, 427, 428, 428, 428, 429, 665, , 669
ESP10, 427, 428, 428, 429, 429, 667, , 671
ESP10, 426, 427, 428, 428, 428, 669, , 673
ESP10, 425, 426, 427, 427, 427, 671, , 675
ESP10, 420, 422, 424, 425, 425, 673, , 677
ESP10, 423, 424, 425, 425, 425, 675, , 679
ESP10, 423, 424, 425, 426, 426, 677, , 681
ESP10, 423, 424, 426, 426, 426, 680, , 684
ESP10, 423, 424, 425, 425, 425, 682, , 686
ESP10, 423, 424, 425, 425, 425, 684, , 688
ESP10, 421, 422, 423, 424, 424, 686, , 690
ESP10, 423, 424, 424, 425, 425, 688, , 692
ESP10, 422, 423, 424, 424, 424, 690, , 694
ESP10, 423, 424, 424, 424, 425, 692, , 696
ESP10, 423, 425, 425, 425, 425, 694, , 698
ESP10, 425, 426, 426, 426, 427, 696, , 700
ESP10, 426, 427, 428, 428, 428, 698, , 702
ESP10, 426, 427, 427, 427, 428, 700, , 704
ESP10, 426, 427, 427, 427, 427, 703, , 707
ESP10, 426, 427, 427, 427, 427, 705, , 709
ESP10, 425, 426, 426, 426, 426, 707, , 711
ESP10, 426, 427, 427, 428, 428, 709, , 713
ESP10, 426, 427, 428, 428, 428, 711, , 715
ESP10, 426, 427, 427, 427, 427, 713, , 717
ESP10, 426, 427, 427, 427, 427, 715, , 719
ESP10, 425, 426, 427, 427, 427, 717, , 721
ESP10, 425, 426, 426, 426, 426, 719, , 723
ESP10, 425, 426, 427, 427, 427, 721, , 725
ESP10, 425, 426, 426, 427, 427, 723, , 727
ESP10, 424, 426, 426, 426, 426, 725, , 729
ESP10, 425, 426, 426, 427, 427, 728, , 732
ESP10, 425, 426, 426, 427, 427, 730, , 734
ESP10, 425, 426, 426, 427, 427, 732, , 736
ESP10, 424, 426, 426, 426, 426, 734, , 738
Max Scale
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Show Min/Max Ensemble Volume
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ESP10
HEFS
ESP0
Data Files
/chpsesp/ensemble/natural/CHDW1N_SQIN.ESPF10.csv
CHDW1N_SQIN.ESPF0.csv|2026-08-16
CHDW1N_SQIN.ESPF10.csv|2026-08-16
CHDW1N_SQIN.ESPFM.csv|2026-08-16
APR-SEP
CHELAN - LAKE CHELAN DAM
(
CHDW1
)
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
630
980
83
1609
1185
APR-JUL
584
880
83
1331
1065
APR-AUG
611
947
83
1502
1142
JAN-SEP
752
1202
87
1794
1381
JAN-JUL
706
1086
86
1528
1261
OCT-SEP
830
1455
91
1920
1603
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/CHDW1N_SQIN.ESPF10.csv
CHDW1N_SQIN.ESPF0.csv|2026-08-16
CHDW1N_SQIN.ESPF10.csv|2026-08-16
CHDW1N_SQIN.ESPFM.csv|2026-08-16
APR-SEP
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ESP10,ESPM,ESP0
ESP10,ESPM,ESP0
Last Forecast
