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COLUMBIA - THE DALLES DAM
(
TDAO3
)
Forecasts for Water Year
2026
Official Water Supply
ESP with 10 Days QPF
Ensemble:
2026-08-12
Issued:
2026-08-12
Hide Forecast
Forecast
Period
Forecasts Are in KAF
30 Year
Average
(1991-2020)
90 %
50 %
%
Average
10 %
APR-SEP
77410
77744
83
78439
94166
APR-JUL
67976
67976
83
67976
81933
APR-AUG
73290
73422
82
73568
89196
JAN-SEP
102606
102940
89
103634
115946
JAN-JUL
93172
93172
90
93172
103714
OCT-SEP
122491
122826
93
123520
132314
Experimental Water Supply
HEFS with 15 days EQPF
Ensemble:
2026-08-12
Issued:
2026-08-12
Hide Forecast
APR-SEP
77658
78017
83
79068
94166
APR-JUL
67976
67976
83
67976
81933
APR-AUG
73441
73557
82
73863
89196
JAN-SEP
102854
103213
89
104263
115946
JAN-JUL
93172
93172
90
93172
103714
OCT-SEP
122740
123098
93
124149
132314
Reference
ESP with 0 Days QPF
Ensemble:
2026-08-12
Issued:
2026-08-12
Hide Forecast
APR-SEP
77448
77771
83
78645
94166
APR-JUL
67976
67976
83
67976
81933
APR-AUG
73278
73426
82
73699
89196
JAN-SEP
102644
102967
89
103841
115946
JAN-JUL
93172
93172
90
93172
103714
OCT-SEP
122530
122852
93
123726
132314
Move the mouse over the desired "Forecast Period" to display a graph.
ESP10, 257, 324, 361, 416, 451, 70, , 74
ESP10, 251, 320, 356, 411, 450, 72, , 76
ESP10, 249, 321, 352, 411, 448, 74, , 78
ESP10, 248, 317, 355, 412, 448, 76, , 80
ESP10, 247, 318, 354, 411, 446, 79, , 83
ESP10, 243, 313, 351, 411, 444, 81, , 85
ESP10, 245, 315, 354, 416, 445, 83, , 87
ESP10, 247, 318, 357, 417, 447, 85, , 89
ESP10, 244, 320, 358, 419, 447, 87, , 91
ESP10, 240, 317, 352, 414, 444, 89, , 93
ESP10, 238, 319, 354, 410, 443, 91, , 95
ESP10, 239, 322, 356, 412, 445, 93, , 97
ESP10, 234, 321, 349, 412, 444, 95, , 99
ESP10, 234, 321, 351, 414, 447, 98, , 102
ESP10, 233, 319, 345, 411, 444, 100, , 104
ESP10, 217, 306, 333, 403, 433, 102, , 106
ESP10, 209, 299, 327, 394, 425, 104, , 108
ESP10, 218, 307, 337, 403, 433, 106, , 110
ESP10, 222, 310, 338, 406, 434, 108, , 112
ESP10, 224, 311, 344, 406, 436, 110, , 114
ESP10, 212, 303, 336, 395, 427, 112, , 116
ESP10, 212, 307, 340, 402, 427, 114, , 118
ESP10, 206, 308, 335, 399, 425, 117, , 121
ESP10, 214, 322, 344, 407, 434, 119, , 123
ESP10, 217, 328, 353, 419, 438, 121, , 125
ESP10, 218, 329, 352, 423, 441, 123, , 127
ESP10, 219, 330, 352, 424, 439, 125, , 129
ESP10, 231, 332, 357, 426, 440, 127, , 131
ESP10, 227, 326, 353, 420, 435, 129, , 133
ESP10, 209, 312, 340, 409, 426, 131, , 135
ESP10, 209, 312, 340, 408, 425, 134, , 138
ESP10, 215, 314, 344, 411, 429, 136, , 140
ESP10, 224, 317, 343, 407, 431, 138, , 142
ESP10, 233, 325, 353, 414, 440, 140, , 144
ESP10, 239, 327, 356, 416, 442, 142, , 146
ESP10, 239, 327, 356, 416, 441, 144, , 148
ESP10, 240, 327, 358, 414, 442, 146, , 150
ESP10, 235, 321, 350, 407, 435, 148, , 152
ESP10, 242, 326, 356, 412, 440, 150, , 154
ESP10, 244, 324, 358, 410, 444, 153, , 157
ESP10, 249, 331, 360, 410, 450, 155, , 159
ESP10, 253, 339, 362, 412, 452, 157, , 161
ESP10, 263, 346, 370, 416, 458, 159, , 163
ESP10, 273, 347, 375, 425, 465, 161, , 165
ESP10, 269, 339, 372, 423, 461, 163, , 167
ESP10, 277, 343, 376, 426, 466, 165, , 169
ESP10, 272, 336, 373, 423, 465, 167, , 171
ESP10, 284, 343, 378, 429, 472, 169, , 173
ESP10, 289, 342, 374, 424, 473, 172, , 176
ESP10, 290, 345, 376, 426, 475, 174, , 178
ESP10, 288, 346, 374, 424, 473, 176, , 180
ESP10, 283, 344, 371, 419, 470, 178, , 182
ESP10, 281, 347, 371, 417, 468, 180, , 184
ESP10, 292, 356, 384, 428, 474, 182, , 186
ESP10, 289, 355, 382, 429, 470, 184, , 188
ESP10, 289, 354, 383, 430, 470, 186, , 190
ESP10, 282, 346, 378, 426, 465, 188, , 192
ESP10, 280, 344, 379, 430, 464, 191, , 195
ESP10, 283, 345, 383, 431, 464, 193, , 197
ESP10, 271, 329, 374, 419, 452, 195, , 199
ESP10, 258, 315, 365, 408, 441, 197, , 201
ESP10, 263, 323, 371, 413, 448, 199, , 203
ESP10, 251, 318, 363, 402, 440, 201, , 205
ESP10, 232, 296, 342, 383, 424, 203, , 207
ESP10, 234, 300, 343, 390, 428, 205, , 209
ESP10, 226, 297, 338, 385, 422, 207, , 211
ESP10, 232, 303, 348, 396, 429, 210, , 214
ESP10, 228, 296, 341, 392, 424, 212, , 216
ESP10, 214, 275, 322, 374, 412, 214, , 218
ESP10, 207, 269, 316, 366, 405, 216, , 220
ESP10, 204, 268, 316, 367, 406, 218, , 222
ESP10, 209, 266, 317, 372, 412, 220, , 224
ESP10, 208, 266, 317, 371, 411, 222, , 226
ESP10, 206, 261, 311, 366, 409, 224, , 228
ESP10, 208, 261, 314, 365, 409, 227, , 231
ESP10, 210, 259, 313, 362, 408, 229, , 233
ESP10, 207, 260, 315, 359, 408, 231, , 235
ESP10, 215, 263, 318, 359, 409, 233, , 237
ESP10, 217, 272, 321, 358, 412, 235, , 239
ESP10, 221, 275, 316, 355, 409, 237, , 241
ESP10, 232, 278, 320, 362, 411, 239, , 243
ESP10, 242, 280, 324, 364, 410, 241, , 245
ESP10, 255, 283, 333, 374, 418, 243, , 247
ESP10, 258, 283, 336, 380, 420, 246, , 250
ESP10, 251, 273, 327, 374, 413, 248, , 252
ESP10, 245, 269, 323, 375, 413, 250, , 254
ESP10, 247, 277, 325, 379, 416, 252, , 256
ESP10, 248, 284, 334, 383, 423, 254, , 258
ESP10, 247, 284, 333, 379, 420, 256, , 260
ESP10, 254, 286, 331, 379, 419, 258, , 262
ESP10, 261, 289, 339, 376, 421, 260, , 264
ESP10, 260, 292, 336, 374, 420, 262, , 266
ESP10, 255, 287, 330, 370, 415, 265, , 269
ESP10, 254, 296, 330, 376, 413, 267, , 271
ESP10, 245, 291, 328, 372, 408, 269, , 273
ESP10, 243, 292, 327, 374, 406, 271, , 275
ESP10, 240, 291, 326, 374, 406, 273, , 277
ESP10, 239, 293, 328, 375, 406, 275, , 279
ESP10, 244, 290, 328, 373, 404, 277, , 281
ESP10, 249, 290, 331, 372, 404, 279, , 283
ESP10, 248, 293, 332, 372, 407, 281, , 285
ESP10, 249, 294, 331, 371, 408, 284, , 288
ESP10, 247, 294, 329, 369, 408, 286, , 290
ESP10, 251, 298, 326, 367, 409, 288, , 292
ESP10, 256, 297, 332, 368, 416, 290, , 294
ESP10, 254, 299, 334, 367, 413, 292, , 296
ESP10, 251, 296, 336, 365, 410, 294, , 298
ESP10, 256, 300, 339, 368, 411, 296, , 300
ESP10, 258, 306, 338, 370, 410, 298, , 302
ESP10, 263, 319, 345, 377, 416, 300, , 304
ESP10, 267, 320, 346, 378, 415, 303, , 307
ESP10, 276, 322, 351, 382, 421, 305, , 309
ESP10, 282, 325, 351, 383, 422, 307, , 311
ESP10, 288, 330, 358, 389, 426, 309, , 313
ESP10, 289, 331, 359, 388, 427, 311, , 315
ESP10, 284, 331, 356, 386, 423, 313, , 317
ESP10, 290, 333, 358, 387, 425, 315, , 319
ESP10, 293, 334, 361, 388, 430, 317, , 321
ESP10, 295, 343, 362, 388, 429, 320, , 324
ESP10, 295, 347, 364, 388, 429, 322, , 326
ESP10, 298, 343, 361, 388, 426, 324, , 328
ESP10, 295, 342, 358, 385, 421, 326, , 330
ESP10, 288, 336, 352, 380, 416, 328, , 332
ESP10, 293, 336, 353, 381, 420, 330, , 334
ESP10, 300, 338, 354, 381, 423, 332, , 336
ESP10, 302, 340, 355, 383, 422, 334, , 338
ESP10, 297, 336, 352, 379, 419, 336, , 340
ESP10, 304, 342, 357, 385, 423, 339, , 343
ESP10, 304, 339, 355, 385, 421, 341, , 345
ESP10, 304, 340, 356, 385, 419, 343, , 347
ESP10, 306, 341, 358, 384, 417, 345, , 349
ESP10, 309, 342, 357, 385, 417, 347, , 351
ESP10, 308, 339, 352, 379, 411, 349, , 353
ESP10, 314, 343, 354, 384, 413, 351, , 355
ESP10, 311, 345, 356, 385, 410, 353, , 357
ESP10, 303, 334, 346, 376, 401, 355, , 359
ESP10, 301, 333, 345, 376, 401, 358, , 362
ESP10, 306, 339, 352, 381, 406, 360, , 364
ESP10, 294, 325, 340, 368, 396, 362, , 366
ESP10, 306, 337, 352, 380, 409, 364, , 368
ESP10, 299, 330, 347, 371, 404, 366, , 370
ESP10, 306, 336, 355, 378, 410, 368, , 372
ESP10, 307, 336, 354, 380, 409, 370, , 374
ESP10, 314, 339, 358, 385, 413, 372, , 376
ESP10, 317, 338, 359, 387, 413, 374, , 378
ESP10, 321, 345, 361, 391, 415, 377, , 381
ESP10, 324, 345, 363, 391, 415, 379, , 383
ESP10, 318, 340, 360, 383, 407, 381, , 385
ESP10, 313, 333, 356, 378, 402, 383, , 387
ESP10, 304, 327, 349, 369, 393, 385, , 389
ESP10, 307, 333, 355, 371, 396, 387, , 391
ESP10, 304, 331, 354, 369, 392, 389, , 393
ESP10, 295, 322, 350, 363, 384, 391, , 395
ESP10, 287, 317, 345, 359, 376, 393, , 397
ESP10, 284, 315, 344, 358, 371, 396, , 400
ESP10, 281, 313, 340, 356, 371, 398, , 402
ESP10, 274, 305, 332, 348, 363, 400, , 404
ESP10, 277, 308, 333, 349, 364, 402, , 406
ESP10, 269, 299, 321, 336, 353, 404, , 408
ESP10, 283, 312, 335, 347, 366, 406, , 410
ESP10, 283, 311, 330, 345, 364, 408, , 412
ESP10, 275, 305, 323, 341, 357, 410, , 414
ESP10, 280, 309, 323, 344, 359, 413, , 417
ESP10, 284, 313, 329, 350, 365, 415, , 419
ESP10, 283, 311, 328, 348, 363, 417, , 421
ESP10, 280, 310, 326, 346, 360, 419, , 423
ESP10, 274, 305, 321, 341, 355, 421, , 425
ESP10, 276, 308, 325, 348, 358, 423, , 427
ESP10, 280, 308, 325, 347, 362, 425, , 429
ESP10, 284, 310, 331, 349, 363, 427, , 431
ESP10, 287, 309, 330, 348, 362, 429, , 433
ESP10, 295, 313, 333, 350, 366, 432, , 436
ESP10, 299, 312, 333, 347, 367, 434, , 438
ESP10, 288, 301, 323, 337, 357, 436, , 440
ESP10, 283, 298, 319, 331, 351, 438, , 442
ESP10, 287, 303, 322, 338, 355, 440, , 444
ESP10, 282, 300, 320, 337, 352, 442, , 446
ESP10, 284, 302, 325, 343, 354, 444, , 448
ESP10, 286, 307, 331, 347, 360, 446, , 450
ESP10, 288, 310, 332, 350, 364, 448, , 452
ESP10, 295, 316, 341, 356, 369, 451, , 455
ESP10, 298, 317, 343, 357, 371, 453, , 457
ESP10, 295, 316, 341, 352, 369, 455, , 459
ESP10, 301, 325, 346, 359, 374, 457, , 461
ESP10, 299, 324, 346, 361, 373, 459, , 463
ESP10, 296, 322, 346, 362, 372, 461, , 465
ESP10, 299, 323, 346, 364, 372, 463, , 467
ESP10, 301, 329, 351, 368, 374, 465, , 469
ESP10, 300, 323, 348, 363, 369, 467, , 471
ESP10, 295, 318, 342, 356, 362, 470, , 474
ESP10, 293, 317, 338, 352, 359, 472, , 476
ESP10, 293, 317, 338, 351, 359, 474, , 478
ESP10, 292, 317, 338, 352, 360, 476, , 480
ESP10, 296, 320, 341, 355, 362, 478, , 482
ESP10, 294, 321, 338, 351, 357, 480, , 484
ESP10, 306, 329, 346, 359, 365, 482, , 486
ESP10, 303, 325, 345, 358, 363, 484, , 488
ESP10, 311, 332, 348, 361, 368, 486, , 490
ESP10, 314, 328, 346, 358, 365, 489, , 493
ESP10, 313, 328, 346, 358, 365, 491, , 495
ESP10, 316, 331, 347, 361, 367, 493, , 497
ESP10, 318, 333, 351, 363, 369, 495, , 499
ESP10, 319, 337, 354, 364, 371, 497, , 501
ESP10, 328, 347, 363, 373, 383, 499, , 503
ESP10, 326, 347, 361, 372, 382, 501, , 505
ESP10, 327, 348, 363, 373, 382, 503, , 507
ESP10, 326, 348, 361, 370, 382, 506, , 510
ESP10, 324, 348, 361, 369, 382, 508, , 512
ESP10, 326, 351, 363, 371, 383, 510, , 514
ESP10, 328, 351, 362, 370, 383, 512, , 516
ESP10, 329, 351, 364, 373, 383, 514, , 518
ESP10, 336, 355, 368, 378, 387, 516, , 520
ESP10, 338, 360, 370, 379, 392, 518, , 522
ESP10, 339, 360, 373, 381, 392, 520, , 524
ESP10, 340, 361, 373, 382, 391, 522, , 526
ESP10, 339, 360, 372, 381, 389, 525, , 529
ESP10, 340, 360, 372, 382, 389, 527, , 531
ESP10, 340, 359, 372, 383, 388, 529, , 533
ESP10, 340, 358, 371, 384, 389, 531, , 535
ESP10, 341, 361, 370, 384, 389, 533, , 537
ESP10, 344, 363, 371, 385, 389, 535, , 539
ESP10, 344, 362, 369, 383, 387, 537, , 541
ESP10, 346, 362, 370, 382, 387, 539, , 543
ESP10, 348, 362, 373, 383, 390, 541, , 545
ESP10, 346, 359, 372, 381, 387, 544, , 548
ESP10, 349, 359, 373, 383, 389, 546, , 550
ESP10, 350, 357, 372, 381, 388, 548, , 552
ESP10, 352, 359, 376, 382, 389, 550, , 554
ESP10, 355, 362, 377, 384, 390, 552, , 556
ESP10, 358, 367, 381, 388, 393, 554, , 558
ESP10, 354, 364, 377, 385, 390, 556, , 560
ESP10, 353, 363, 375, 383, 387, 558, , 562
ESP10, 355, 368, 375, 382, 387, 560, , 564
ESP10, 353, 366, 375, 379, 385, 563, , 567
ESP10, 354, 366, 375, 380, 385, 565, , 569
ESP10, 352, 363, 373, 377, 384, 567, , 571
ESP10, 353, 362, 371, 376, 383, 569, , 573
ESP10, 353, 365, 372, 377, 383, 571, , 575
ESP10, 357, 366, 373, 379, 385, 573, , 577
ESP10, 353, 362, 369, 375, 381, 575, , 579
ESP10, 357, 363, 372, 377, 383, 577, , 581
ESP10, 356, 363, 372, 378, 383, 579, , 583
ESP10, 358, 364, 373, 379, 384, 582, , 586
ESP10, 360, 366, 374, 381, 386, 584, , 588
ESP10, 361, 366, 373, 381, 386, 586, , 590
ESP10, 361, 366, 374, 380, 385, 588, , 592
ESP10, 364, 371, 376, 384, 388, 590, , 594
ESP10, 367, 374, 378, 386, 390, 592, , 596
ESP10, 369, 375, 380, 387, 392, 594, , 598
ESP10, 367, 374, 379, 386, 390, 596, , 600
ESP10, 373, 381, 386, 392, 395, 599, , 603
ESP10, 372, 381, 387, 392, 395, 601, , 605
ESP10, 377, 385, 391, 396, 399, 603, , 607
ESP10, 378, 383, 390, 395, 397, 605, , 609
ESP10, 378, 383, 390, 395, 397, 607, , 611
ESP10, 380, 385, 391, 396, 399, 609, , 613
ESP10, 381, 386, 391, 397, 399, 611, , 615
ESP10, 380, 386, 391, 395, 398, 613, , 617
ESP10, 379, 386, 391, 395, 398, 615, , 619
ESP10, 381, 388, 393, 397, 399, 618, , 622
ESP10, 382, 389, 394, 399, 400, 620, , 624
ESP10, 381, 388, 393, 398, 400, 622, , 626
ESP10, 381, 390, 394, 398, 401, 624, , 628
ESP10, 378, 387, 391, 396, 399, 626, , 630
ESP10, 386, 393, 397, 401, 405, 628, , 632
ESP10, 386, 392, 396, 401, 404, 630, , 634
ESP10, 387, 392, 397, 400, 405, 632, , 636
ESP10, 383, 389, 394, 397, 401, 634, , 638
ESP10, 383, 389, 394, 396, 400, 637, , 641
ESP10, 380, 387, 392, 393, 398, 639, , 643
ESP10, 383, 389, 394, 397, 400, 641, , 645
ESP10, 385, 391, 396, 398, 401, 643, , 647
ESP10, 385, 389, 395, 397, 400, 645, , 649
ESP10, 386, 389, 395, 398, 400, 647, , 651
ESP10, 386, 389, 394, 397, 399, 649, , 653
ESP10, 387, 391, 396, 399, 401, 651, , 655
ESP10, 392, 395, 399, 401, 403, 653, , 657
ESP10, 392, 395, 399, 402, 403, 656, , 660
ESP10, 392, 395, 399, 401, 403, 658, , 662
ESP10, 392, 395, 399, 401, 402, 660, , 664
ESP10, 393, 396, 399, 402, 403, 662, , 666
ESP10, 393, 397, 399, 402, 403, 664, , 668
ESP10, 392, 397, 399, 402, 402, 666, , 670
ESP10, 392, 396, 398, 401, 401, 668, , 672
ESP10, 391, 396, 398, 400, 401, 670, , 674
ESP10, 393, 398, 399, 402, 402, 672, , 676
ESP10, 392, 398, 399, 401, 402, 675, , 679
ESP10, 392, 397, 399, 401, 402, 677, , 681
ESP10, 392, 397, 400, 401, 402, 679, , 683
ESP10, 393, 398, 400, 402, 403, 681, , 685
ESP10, 393, 398, 400, 401, 402, 683, , 687
ESP10, 392, 397, 399, 401, 402, 685, , 689
ESP10, 392, 397, 399, 401, 402, 687, , 691
ESP10, 392, 397, 399, 401, 402, 689, , 693
ESP10, 393, 397, 399, 401, 402, 692, , 696
ESP10, 393, 397, 400, 401, 402, 694, , 698
ESP10, 394, 398, 400, 401, 403, 696, , 700
ESP10, 395, 398, 400, 402, 403, 698, , 702
ESP10, 395, 399, 400, 402, 403, 700, , 704
ESP10, 396, 400, 401, 403, 404, 702, , 706
ESP10, 396, 400, 401, 402, 404, 704, , 708
ESP10, 396, 400, 401, 402, 403, 706, , 710
ESP10, 397, 400, 401, 402, 403, 708, , 712
ESP10, 397, 400, 402, 403, 403, 711, , 715
ESP10, 397, 400, 402, 403, 403, 713, , 717
ESP10, 399, 401, 402, 403, 404, 715, , 719
ESP10, 398, 400, 402, 403, 403, 717, , 721
ESP10, 398, 401, 402, 403, 404, 719, , 723
ESP10, 398, 400, 402, 403, 403, 721, , 725
ESP10, 399, 401, 402, 403, 404, 723, , 727
ESP10, 397, 400, 401, 402, 403, 725, , 729
ESP10, 397, 401, 402, 403, 403, 727, , 731
ESP10, 398, 401, 402, 403, 403, 730, , 734
ESP10, 398, 400, 402, 402, 403, 732, , 736
ESP10, 399, 401, 402, 403, 404, 734, , 738
Max Scale
Scale To Data
Scale To Last 45 Days
Show Min/Max Ensemble Volume
Show Tooltips Help
Overlay
ESP10
HEFS
ESP0
Data Files
/chpsesp/ensemble/watersupply/TDAO3W_SQIN.ESPF10.csv
TDAO3W_SQIN.ESPF0.csv|2026-08-12
TDAO3W_SQIN.ESPF10.csv|2026-08-12
TDAO3W_SQIN.ESPFM.csv|2026-08-12
APR-SEP
COLUMBIA - THE DALLES DAM
(
TDAO3
)
Forecasts for Water Year
2027
Official Water Supply
ESP with 10 Days QPF
Ensemble:
2026-08-12
Issued:
2026-08-12
Hide Forecast
Forecast
Period
Forecasts Are in KAF
30 Year
Average
(1991-2020)
90 %
50 %
%
Average
10 %
APR-SEP
66747
88021
93
111636
94166
APR-JUL
56951
76011
93
95513
81933
APR-AUG
62749
82845
93
105461
89196
JAN-SEP
82003
106627
92
134624
115946
JAN-JUL
72037
93420
90
118860
103714
OCT-SEP
94747
120485
91
152697
132314
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/TDAO3W_SQIN.ESPF10.csv
TDAO3W_SQIN.ESPF0.csv|2026-08-12
TDAO3W_SQIN.ESPF10.csv|2026-08-12
TDAO3W_SQIN.ESPFM.csv|2026-08-12
APR-SEP
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ESP10,ESPM,ESP0
ESP10,ESPM,ESP0
Last Forecast
