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Archive:
Water Year
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COLUMBIA - THE DALLES DAM
(
TDAO3
)
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
80555
80798
83
81270
97693
APR-JUL
68610
68610
82
68610
83946
APR-AUG
76218
76221
83
76224
92254
JAN-SEP
105013
105257
89
105728
118193
JAN-JUL
93069
93069
89
93069
104447
OCT-SEP
124281
124524
93
124995
134323
Experimental
HEFS with 15 days EQPF
Ensemble:
2026-08-18
Issued:
2026-08-18
Hide Forecast
APR-SEP
80579
80855
83
81210
97693
APR-JUL
68610
68610
82
68610
83946
APR-AUG
76197
76228
83
76268
92254
JAN-SEP
105037
105313
89
105668
118193
JAN-JUL
93069
93069
89
93069
104447
OCT-SEP
124305
124581
93
124935
134323
Reference
ESP with 0 Days QPF
Ensemble:
2026-08-18
Issued:
2026-08-18
Hide Forecast
APR-SEP
80493
80819
83
81312
97693
APR-JUL
68610
68610
82
68610
83946
APR-AUG
76140
76182
83
76288
92254
JAN-SEP
104951
105278
89
105770
118193
JAN-JUL
93069
93069
89
93069
104447
OCT-SEP
124219
124545
93
125037
134323
Move the mouse over the desired "Forecast Period" to display a graph.
ESP10, 254, 322, 360, 412, 453, 70, , 74
ESP10, 248, 321, 355, 408, 451, 72, , 76
ESP10, 245, 321, 352, 409, 450, 74, , 78
ESP10, 245, 318, 353, 409, 449, 76, , 80
ESP10, 244, 319, 352, 409, 448, 78, , 82
ESP10, 241, 314, 349, 408, 446, 80, , 84
ESP10, 242, 316, 351, 413, 447, 83, , 87
ESP10, 244, 319, 352, 414, 449, 85, , 89
ESP10, 241, 320, 354, 415, 449, 87, , 91
ESP10, 238, 317, 350, 411, 446, 89, , 93
ESP10, 235, 317, 350, 408, 445, 91, , 95
ESP10, 236, 320, 351, 411, 447, 93, , 97
ESP10, 231, 319, 346, 411, 446, 95, , 99
ESP10, 232, 320, 348, 414, 449, 97, , 101
ESP10, 229, 318, 345, 412, 447, 99, , 103
ESP10, 215, 305, 335, 401, 435, 101, , 105
ESP10, 206, 298, 327, 393, 427, 103, , 107
ESP10, 216, 305, 336, 402, 435, 105, , 109
ESP10, 219, 308, 337, 405, 437, 107, , 111
ESP10, 221, 310, 342, 406, 438, 109, , 113
ESP10, 209, 302, 333, 394, 429, 112, , 116
ESP10, 209, 306, 336, 403, 429, 114, , 118
ESP10, 203, 306, 331, 399, 426, 116, , 120
ESP10, 212, 320, 341, 407, 436, 118, , 122
ESP10, 214, 327, 349, 416, 441, 120, , 124
ESP10, 216, 328, 349, 418, 443, 122, , 126
ESP10, 216, 329, 349, 420, 442, 124, , 128
ESP10, 228, 329, 353, 422, 442, 126, , 130
ESP10, 223, 322, 349, 415, 438, 128, , 132
ESP10, 205, 312, 336, 405, 428, 130, , 134
ESP10, 204, 310, 336, 405, 427, 132, , 136
ESP10, 210, 314, 340, 407, 431, 134, , 138
ESP10, 220, 315, 342, 405, 433, 136, , 140
ESP10, 228, 323, 351, 414, 442, 139, , 143
ESP10, 235, 325, 353, 417, 443, 141, , 145
ESP10, 234, 325, 352, 416, 442, 143, , 147
ESP10, 235, 325, 352, 414, 442, 145, , 149
ESP10, 231, 319, 345, 407, 436, 147, , 151
ESP10, 237, 328, 351, 412, 442, 149, , 153
ESP10, 240, 325, 355, 410, 446, 151, , 155
ESP10, 245, 332, 358, 410, 452, 153, , 157
ESP10, 249, 340, 359, 413, 454, 155, , 159
ESP10, 260, 345, 366, 416, 460, 157, , 161
ESP10, 270, 347, 372, 426, 468, 159, , 163
ESP10, 266, 339, 369, 424, 464, 161, , 165
ESP10, 273, 341, 374, 427, 467, 163, , 167
ESP10, 269, 336, 370, 425, 467, 165, , 169
ESP10, 281, 342, 377, 430, 475, 168, , 172
ESP10, 286, 341, 374, 425, 474, 170, , 174
ESP10, 285, 344, 375, 427, 475, 172, , 176
ESP10, 283, 344, 373, 425, 473, 174, , 178
ESP10, 278, 343, 369, 420, 470, 176, , 180
ESP10, 277, 346, 371, 418, 467, 178, , 182
ESP10, 287, 356, 383, 428, 474, 180, , 184
ESP10, 284, 354, 380, 430, 470, 182, , 186
ESP10, 284, 354, 381, 430, 470, 184, , 188
ESP10, 277, 346, 379, 426, 465, 186, , 190
ESP10, 275, 345, 378, 431, 463, 188, , 192
ESP10, 278, 346, 382, 433, 464, 190, , 194
ESP10, 268, 331, 372, 422, 453, 192, , 196
ESP10, 257, 318, 365, 411, 445, 195, , 199
ESP10, 262, 322, 373, 416, 450, 197, , 201
ESP10, 250, 315, 364, 405, 441, 199, , 203
ESP10, 231, 293, 343, 386, 426, 201, , 205
ESP10, 234, 298, 345, 393, 431, 203, , 207
ESP10, 225, 294, 340, 386, 425, 205, , 209
ESP10, 232, 302, 350, 398, 432, 207, , 211
ESP10, 228, 296, 342, 396, 426, 209, , 213
ESP10, 214, 276, 324, 378, 414, 211, , 215
ESP10, 207, 274, 317, 370, 405, 213, , 217
ESP10, 205, 272, 318, 370, 408, 215, , 219
ESP10, 209, 269, 317, 374, 412, 217, , 221
ESP10, 209, 270, 317, 372, 412, 219, , 223
ESP10, 206, 265, 312, 366, 410, 221, , 225
ESP10, 209, 264, 315, 366, 412, 224, , 228
ESP10, 211, 263, 313, 364, 411, 226, , 230
ESP10, 208, 262, 316, 362, 411, 228, , 232
ESP10, 216, 266, 319, 361, 414, 230, , 234
ESP10, 219, 273, 322, 361, 414, 232, , 236
ESP10, 224, 273, 317, 357, 412, 234, , 238
ESP10, 235, 276, 321, 365, 415, 236, , 240
ESP10, 242, 277, 325, 367, 413, 238, , 242
ESP10, 255, 287, 334, 378, 421, 240, , 244
ESP10, 259, 287, 337, 382, 423, 242, , 246
ESP10, 250, 277, 329, 376, 416, 244, , 248
ESP10, 244, 272, 324, 377, 417, 246, , 250
ESP10, 245, 277, 326, 382, 419, 248, , 252
ESP10, 247, 284, 334, 385, 424, 251, , 255
ESP10, 246, 283, 332, 381, 422, 253, , 257
ESP10, 253, 287, 333, 380, 422, 255, , 259
ESP10, 261, 289, 340, 379, 424, 257, , 261
ESP10, 260, 293, 339, 377, 423, 259, , 263
ESP10, 256, 288, 333, 372, 418, 261, , 265
ESP10, 254, 298, 333, 377, 416, 263, , 267
ESP10, 246, 293, 327, 373, 411, 265, , 269
ESP10, 244, 294, 329, 374, 408, 267, , 271
ESP10, 241, 293, 328, 375, 409, 269, , 273
ESP10, 240, 294, 327, 375, 408, 271, , 275
ESP10, 246, 291, 327, 374, 407, 273, , 277
ESP10, 252, 293, 331, 374, 407, 275, , 279
ESP10, 249, 294, 333, 373, 407, 278, , 282
ESP10, 249, 296, 331, 373, 410, 280, , 284
ESP10, 247, 297, 330, 371, 409, 282, , 286
ESP10, 252, 299, 325, 369, 410, 284, , 288
ESP10, 256, 297, 330, 367, 413, 286, , 290
ESP10, 255, 301, 334, 368, 412, 288, , 292
ESP10, 254, 299, 338, 368, 410, 290, , 294
ESP10, 259, 304, 341, 371, 411, 292, , 296
ESP10, 260, 311, 341, 372, 410, 294, , 298
ESP10, 266, 323, 347, 381, 416, 296, , 300
ESP10, 272, 324, 348, 381, 415, 298, , 302
ESP10, 281, 326, 353, 385, 421, 300, , 304
ESP10, 287, 330, 354, 387, 422, 302, , 306
ESP10, 293, 335, 360, 393, 426, 304, , 308
ESP10, 293, 336, 363, 392, 427, 307, , 311
ESP10, 285, 334, 360, 389, 423, 309, , 313
ESP10, 291, 336, 364, 391, 426, 311, , 315
ESP10, 295, 337, 366, 391, 430, 313, , 317
ESP10, 297, 343, 366, 392, 430, 315, , 319
ESP10, 297, 346, 368, 393, 429, 317, , 321
ESP10, 300, 345, 365, 393, 426, 319, , 323
ESP10, 302, 344, 362, 390, 423, 321, , 325
ESP10, 295, 338, 356, 384, 420, 323, , 327
ESP10, 298, 337, 357, 385, 425, 325, , 329
ESP10, 302, 340, 356, 385, 427, 327, , 331
ESP10, 304, 343, 358, 386, 427, 329, , 333
ESP10, 300, 339, 357, 385, 423, 331, , 335
ESP10, 306, 344, 361, 391, 427, 334, , 338
ESP10, 306, 343, 358, 390, 425, 336, , 340
ESP10, 307, 343, 360, 389, 424, 338, , 342
ESP10, 307, 344, 360, 388, 421, 340, , 344
ESP10, 312, 345, 359, 389, 421, 342, , 346
ESP10, 311, 341, 354, 385, 415, 344, , 348
ESP10, 315, 345, 358, 389, 417, 346, , 350
ESP10, 312, 348, 359, 388, 414, 348, , 352
ESP10, 305, 337, 349, 379, 405, 350, , 354
ESP10, 303, 334, 347, 378, 405, 352, , 356
ESP10, 308, 340, 354, 383, 410, 354, , 358
ESP10, 294, 328, 344, 370, 400, 356, , 360
ESP10, 306, 340, 356, 381, 412, 358, , 362
ESP10, 300, 332, 351, 375, 407, 360, , 364
ESP10, 306, 338, 358, 383, 413, 363, , 367
ESP10, 311, 340, 359, 386, 413, 365, , 369
ESP10, 317, 344, 364, 390, 417, 367, , 371
ESP10, 320, 343, 365, 390, 419, 369, , 373
ESP10, 324, 348, 366, 396, 421, 371, , 375
ESP10, 327, 348, 368, 398, 420, 373, , 377
ESP10, 322, 342, 363, 388, 412, 375, , 379
ESP10, 319, 336, 362, 384, 407, 377, , 381
ESP10, 308, 330, 354, 376, 398, 379, , 383
ESP10, 311, 336, 361, 378, 401, 381, , 385
ESP10, 307, 333, 358, 376, 397, 383, , 387
ESP10, 299, 325, 355, 370, 389, 385, , 389
ESP10, 290, 318, 351, 366, 381, 387, , 391
ESP10, 287, 317, 349, 366, 376, 390, , 394
ESP10, 284, 317, 346, 361, 376, 392, , 396
ESP10, 276, 310, 337, 354, 367, 394, , 398
ESP10, 279, 313, 337, 354, 369, 396, , 400
ESP10, 271, 304, 326, 340, 358, 398, , 402
ESP10, 285, 316, 339, 352, 372, 400, , 404
ESP10, 284, 316, 336, 351, 369, 402, , 406
ESP10, 277, 311, 329, 346, 362, 404, , 408
ESP10, 281, 311, 328, 349, 363, 406, , 410
ESP10, 286, 316, 332, 355, 369, 408, , 412
ESP10, 285, 317, 333, 352, 367, 410, , 414
ESP10, 282, 315, 330, 349, 364, 412, , 416
ESP10, 277, 310, 325, 346, 359, 414, , 418
ESP10, 279, 312, 329, 349, 362, 416, , 420
ESP10, 281, 313, 327, 350, 365, 419, , 423
ESP10, 287, 315, 334, 353, 367, 421, , 425
ESP10, 289, 312, 332, 351, 365, 423, , 427
ESP10, 296, 313, 334, 352, 368, 425, , 429
ESP10, 299, 311, 334, 349, 367, 427, , 431
ESP10, 286, 300, 322, 338, 358, 429, , 433
ESP10, 281, 297, 317, 333, 351, 431, , 435
ESP10, 287, 305, 322, 340, 355, 433, , 437
ESP10, 283, 301, 322, 340, 352, 435, , 439
ESP10, 285, 304, 327, 346, 355, 437, , 441
ESP10, 287, 309, 332, 350, 362, 439, , 443
ESP10, 290, 311, 335, 353, 369, 441, , 445
ESP10, 296, 318, 344, 359, 373, 443, , 447
ESP10, 300, 319, 347, 360, 375, 446, , 450
ESP10, 297, 317, 345, 355, 372, 448, , 452
ESP10, 303, 326, 350, 362, 378, 450, , 454
ESP10, 301, 325, 349, 364, 376, 452, , 456
ESP10, 298, 324, 350, 365, 374, 454, , 458
ESP10, 301, 325, 350, 366, 374, 456, , 460
ESP10, 303, 331, 354, 370, 377, 458, , 462
ESP10, 301, 324, 349, 364, 372, 460, , 464
ESP10, 295, 318, 343, 356, 365, 462, , 466
ESP10, 291, 315, 338, 351, 360, 464, , 468
ESP10, 291, 316, 339, 352, 359, 466, , 470
ESP10, 290, 317, 338, 353, 360, 468, , 472
ESP10, 295, 320, 342, 357, 364, 470, , 474
ESP10, 294, 324, 339, 354, 359, 472, , 476
ESP10, 308, 333, 348, 361, 367, 475, , 479
ESP10, 305, 328, 345, 360, 365, 477, , 481
ESP10, 312, 335, 348, 363, 369, 479, , 483
ESP10, 314, 329, 346, 360, 366, 481, , 485
ESP10, 314, 329, 347, 360, 366, 483, , 487
ESP10, 317, 332, 347, 362, 367, 485, , 489
ESP10, 319, 333, 351, 364, 369, 487, , 491
ESP10, 321, 338, 356, 366, 372, 489, , 493
ESP10, 330, 350, 365, 376, 385, 491, , 495
ESP10, 329, 352, 364, 375, 386, 493, , 497
ESP10, 330, 353, 366, 377, 387, 495, , 499
ESP10, 330, 352, 364, 374, 386, 497, , 501
ESP10, 328, 354, 364, 373, 384, 499, , 503
ESP10, 331, 356, 366, 375, 386, 502, , 506
ESP10, 331, 355, 365, 374, 385, 504, , 508
ESP10, 333, 355, 366, 376, 385, 506, , 510
ESP10, 338, 359, 371, 381, 389, 508, , 512
ESP10, 340, 362, 373, 383, 395, 510, , 514
ESP10, 341, 363, 375, 384, 395, 512, , 516
ESP10, 342, 363, 375, 385, 395, 514, , 518
ESP10, 342, 362, 375, 385, 393, 516, , 520
ESP10, 343, 363, 375, 386, 393, 518, , 522
ESP10, 343, 364, 376, 386, 392, 520, , 524
ESP10, 341, 362, 374, 386, 393, 522, , 526
ESP10, 343, 365, 373, 386, 393, 524, , 528
ESP10, 346, 367, 375, 388, 393, 526, , 530
ESP10, 346, 364, 373, 386, 391, 528, , 532
ESP10, 349, 365, 373, 385, 391, 531, , 535
ESP10, 350, 364, 376, 386, 392, 533, , 537
ESP10, 348, 362, 375, 384, 390, 535, , 539
ESP10, 354, 362, 376, 386, 392, 537, , 541
ESP10, 355, 361, 375, 385, 391, 539, , 543
ESP10, 357, 363, 379, 386, 392, 541, , 545
ESP10, 359, 366, 380, 387, 393, 543, , 547
ESP10, 362, 372, 384, 392, 395, 545, , 549
ESP10, 358, 368, 380, 387, 392, 547, , 551
ESP10, 356, 367, 378, 386, 390, 549, , 553
ESP10, 357, 372, 380, 385, 390, 551, , 555
ESP10, 355, 369, 378, 382, 387, 553, , 557
ESP10, 356, 369, 379, 383, 387, 555, , 559
ESP10, 354, 366, 376, 380, 386, 558, , 562
ESP10, 355, 365, 375, 380, 386, 560, , 564
ESP10, 355, 368, 375, 380, 385, 562, , 566
ESP10, 360, 369, 377, 382, 387, 564, , 568
ESP10, 356, 364, 373, 378, 383, 566, , 570
ESP10, 358, 366, 375, 380, 385, 568, , 572
ESP10, 358, 365, 374, 380, 385, 570, , 574
ESP10, 359, 366, 376, 380, 386, 572, , 576
ESP10, 361, 367, 376, 382, 387, 574, , 578
ESP10, 362, 367, 374, 382, 387, 576, , 580
ESP10, 362, 367, 376, 381, 386, 578, , 582
ESP10, 365, 371, 379, 385, 389, 580, , 584
ESP10, 368, 375, 380, 387, 391, 582, , 586
ESP10, 369, 375, 382, 387, 392, 585, , 589
ESP10, 367, 375, 381, 387, 391, 587, , 591
ESP10, 373, 382, 387, 392, 396, 589, , 593
ESP10, 373, 382, 388, 394, 396, 591, , 595
ESP10, 379, 386, 392, 397, 400, 593, , 597
ESP10, 379, 384, 391, 396, 398, 595, , 599
ESP10, 381, 385, 391, 396, 398, 597, , 601
ESP10, 382, 387, 392, 397, 399, 599, , 603
ESP10, 383, 388, 393, 398, 401, 601, , 605
ESP10, 382, 387, 391, 396, 400, 603, , 607
ESP10, 381, 387, 392, 396, 399, 605, , 609
ESP10, 383, 388, 394, 398, 401, 607, , 611
ESP10, 383, 390, 394, 399, 402, 609, , 613
ESP10, 382, 390, 394, 398, 401, 611, , 615
ESP10, 383, 391, 395, 399, 402, 614, , 618
ESP10, 380, 388, 392, 396, 400, 616, , 620
ESP10, 387, 394, 398, 401, 406, 618, , 622
ESP10, 388, 393, 398, 401, 405, 620, , 624
ESP10, 388, 394, 397, 401, 404, 622, , 626
ESP10, 384, 390, 395, 398, 401, 624, , 628
ESP10, 385, 390, 394, 397, 401, 626, , 630
ESP10, 381, 387, 391, 393, 397, 628, , 632
ESP10, 383, 389, 393, 396, 399, 630, , 634
ESP10, 386, 391, 395, 399, 401, 632, , 636
ESP10, 387, 390, 394, 398, 399, 634, , 638
ESP10, 387, 389, 394, 398, 399, 636, , 640
ESP10, 386, 390, 394, 398, 399, 638, , 642
ESP10, 388, 391, 395, 399, 400, 641, , 645
ESP10, 392, 395, 398, 401, 402, 643, , 647
ESP10, 393, 395, 398, 401, 402, 645, , 649
ESP10, 393, 395, 398, 401, 402, 647, , 651
ESP10, 393, 395, 398, 400, 401, 649, , 653
ESP10, 393, 395, 399, 401, 402, 651, , 655
ESP10, 393, 397, 399, 401, 402, 653, , 657
ESP10, 393, 396, 398, 400, 401, 655, , 659
ESP10, 392, 396, 398, 400, 401, 657, , 661
ESP10, 392, 395, 397, 400, 400, 659, , 663
ESP10, 393, 397, 399, 400, 401, 661, , 665
ESP10, 392, 397, 399, 400, 401, 663, , 667
ESP10, 393, 397, 399, 400, 401, 665, , 669
ESP10, 393, 397, 399, 400, 401, 667, , 671
ESP10, 393, 398, 399, 401, 401, 670, , 674
ESP10, 394, 398, 399, 401, 402, 672, , 676
ESP10, 393, 398, 399, 401, 401, 674, , 678
ESP10, 393, 398, 399, 401, 401, 676, , 680
ESP10, 393, 398, 399, 401, 402, 678, , 682
ESP10, 394, 398, 399, 401, 402, 680, , 684
ESP10, 395, 398, 399, 401, 402, 682, , 686
ESP10, 395, 398, 400, 401, 402, 684, , 688
ESP10, 396, 399, 400, 402, 402, 686, , 690
ESP10, 395, 399, 400, 401, 402, 688, , 692
ESP10, 397, 400, 401, 403, 404, 690, , 694
ESP10, 397, 400, 401, 403, 403, 692, , 696
ESP10, 397, 400, 401, 402, 403, 694, , 698
ESP10, 398, 400, 401, 402, 403, 697, , 701
ESP10, 397, 400, 401, 402, 403, 699, , 703
ESP10, 398, 400, 401, 402, 403, 701, , 705
ESP10, 399, 401, 402, 403, 403, 703, , 707
ESP10, 398, 400, 402, 402, 403, 705, , 709
ESP10, 399, 401, 402, 403, 403, 707, , 711
ESP10, 399, 401, 401, 402, 403, 709, , 713
ESP10, 400, 401, 402, 403, 404, 711, , 715
ESP10, 399, 401, 401, 402, 403, 713, , 717
ESP10, 398, 401, 401, 402, 403, 715, , 719
ESP10, 398, 401, 402, 402, 403, 717, , 721
ESP10, 399, 401, 401, 402, 403, 719, , 723
ESP10, 399, 401, 402, 403, 403, 721, , 725
ESP10, 401, 402, 403, 404, 404, 723, , 727
ESP10, 400, 402, 403, 404, 404, 726, , 730
ESP10, 400, 402, 403, 403, 404, 728, , 732
ESP10, 399, 400, 401, 402, 403, 730, , 734
ESP10, 399, 400, 401, 402, 402, 732, , 736
ESP10, 400, 401, 402, 402, 403, 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/TDAO3N_SQIN.ESPF10.csv
TDAO3N_SQIN.ESPF0.csv|2026-08-18
TDAO3N_SQIN.ESPF10.csv|2026-08-18
TDAO3N_SQIN.ESPFM.csv|2026-08-18
APR-SEP
COLUMBIA - THE DALLES DAM
(
TDAO3
)
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
68305
91697
94
115206
97693
APR-JUL
56265
76228
91
94274
83946
APR-AUG
63816
85745
93
107754
92254
JAN-SEP
82876
108795
92
136937
118193
JAN-JUL
70572
92432
88
118583
104447
OCT-SEP
95244
122743
91
155555
134323
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/TDAO3N_SQIN.ESPF10.csv
TDAO3N_SQIN.ESPF0.csv|2026-08-18
TDAO3N_SQIN.ESPF10.csv|2026-08-18
TDAO3N_SQIN.ESPFM.csv|2026-08-18
APR-SEP
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ESP10,ESPM,ESP0
ESP10,ESPM,ESP0
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