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Archive:
Water Year
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COLUMBIA - THE DALLES DAM
(
TDAO3
)
Forecasts for Water Year
2026
Official Water Supply
ESP with 10 Days QPF
Ensemble:
2026-07-28
Issued:
2026-07-28
Hide Forecast
Forecast
Period
Forecasts Are in KAF
30 Year
Average
(1991-2020)
90 %
50 %
%
Average
10 %
APR-SEP
77482
77984
83
79125
94166
APR-JUL
67916
67916
83
67916
81933
APR-AUG
73334
73546
82
73905
89196
JAN-SEP
102678
103179
89
104320
115946
JAN-JUL
93112
93112
90
93112
103714
OCT-SEP
122563
123065
93
124206
132314
Experimental Water Supply
HEFS with 15 days EQPF
Ensemble:
2026-07-28
Issued:
2026-07-28
Hide Forecast
APR-SEP
77509
78045
83
79229
94166
APR-JUL
67892
67925
83
67947
81933
APR-AUG
73366
73592
83
73867
89196
JAN-SEP
102705
103241
89
104425
115946
JAN-JUL
93088
93121
90
93143
103714
OCT-SEP
122590
123127
93
124311
132314
Reference
ESP with 0 Days QPF
Ensemble:
2026-07-28
Issued:
2026-07-28
Hide Forecast
APR-SEP
77689
78321
83
79769
94166
APR-JUL
67895
67962
83
68012
81933
APR-AUG
73508
73794
83
74462
89196
JAN-SEP
102885
103517
89
104965
115946
JAN-JUL
93091
93158
90
93208
103714
OCT-SEP
122771
123403
93
124850
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, 75, , 79
ESP10, 248, 317, 355, 412, 448, 77, , 81
ESP10, 247, 318, 354, 411, 446, 79, , 83
ESP10, 243, 313, 351, 411, 444, 81, , 85
ESP10, 245, 315, 354, 416, 445, 84, , 88
ESP10, 247, 318, 357, 417, 447, 86, , 90
ESP10, 244, 320, 358, 419, 447, 88, , 92
ESP10, 240, 317, 352, 414, 444, 90, , 94
ESP10, 238, 319, 354, 410, 443, 92, , 96
ESP10, 239, 322, 356, 412, 445, 95, , 99
ESP10, 234, 321, 349, 412, 444, 97, , 101
ESP10, 234, 321, 351, 414, 447, 99, , 103
ESP10, 233, 319, 345, 411, 444, 101, , 105
ESP10, 217, 306, 333, 403, 433, 103, , 107
ESP10, 209, 299, 327, 394, 425, 106, , 110
ESP10, 218, 307, 337, 403, 433, 108, , 112
ESP10, 222, 310, 338, 406, 434, 110, , 114
ESP10, 224, 311, 344, 406, 436, 112, , 116
ESP10, 212, 303, 336, 395, 427, 115, , 119
ESP10, 212, 307, 340, 402, 427, 117, , 121
ESP10, 206, 308, 335, 399, 425, 119, , 123
ESP10, 214, 322, 344, 407, 434, 121, , 125
ESP10, 217, 328, 353, 419, 438, 123, , 127
ESP10, 218, 329, 352, 423, 441, 126, , 130
ESP10, 219, 330, 352, 424, 439, 128, , 132
ESP10, 231, 332, 357, 426, 440, 130, , 134
ESP10, 227, 326, 353, 420, 435, 132, , 136
ESP10, 209, 312, 340, 409, 426, 135, , 139
ESP10, 209, 312, 340, 408, 425, 137, , 141
ESP10, 215, 314, 344, 411, 429, 139, , 143
ESP10, 224, 317, 343, 407, 431, 141, , 145
ESP10, 233, 325, 353, 414, 440, 143, , 147
ESP10, 239, 327, 356, 416, 442, 146, , 150
ESP10, 239, 327, 356, 416, 441, 148, , 152
ESP10, 240, 327, 358, 414, 442, 150, , 154
ESP10, 235, 321, 350, 407, 435, 152, , 156
ESP10, 242, 326, 356, 412, 440, 155, , 159
ESP10, 244, 324, 358, 410, 444, 157, , 161
ESP10, 249, 331, 360, 410, 450, 159, , 163
ESP10, 253, 339, 362, 412, 452, 161, , 165
ESP10, 263, 346, 370, 416, 458, 163, , 167
ESP10, 273, 347, 375, 425, 465, 166, , 170
ESP10, 269, 339, 372, 423, 461, 168, , 172
ESP10, 277, 343, 376, 426, 466, 170, , 174
ESP10, 272, 336, 373, 423, 465, 172, , 176
ESP10, 284, 343, 378, 429, 472, 174, , 178
ESP10, 289, 342, 374, 424, 473, 177, , 181
ESP10, 290, 345, 376, 426, 475, 179, , 183
ESP10, 288, 346, 374, 424, 473, 181, , 185
ESP10, 283, 344, 371, 419, 470, 183, , 187
ESP10, 281, 347, 371, 417, 468, 186, , 190
ESP10, 292, 356, 384, 428, 474, 188, , 192
ESP10, 289, 355, 382, 429, 470, 190, , 194
ESP10, 289, 354, 383, 430, 470, 192, , 196
ESP10, 282, 346, 378, 426, 465, 194, , 198
ESP10, 280, 344, 379, 430, 464, 197, , 201
ESP10, 283, 345, 383, 431, 464, 199, , 203
ESP10, 271, 329, 374, 419, 452, 201, , 205
ESP10, 258, 315, 365, 408, 441, 203, , 207
ESP10, 263, 323, 371, 413, 448, 206, , 210
ESP10, 251, 318, 363, 402, 440, 208, , 212
ESP10, 232, 296, 342, 383, 424, 210, , 214
ESP10, 234, 300, 343, 390, 428, 212, , 216
ESP10, 226, 297, 338, 385, 422, 214, , 218
ESP10, 232, 303, 348, 396, 429, 217, , 221
ESP10, 228, 296, 341, 392, 424, 219, , 223
ESP10, 214, 275, 322, 374, 412, 221, , 225
ESP10, 207, 269, 316, 366, 405, 223, , 227
ESP10, 204, 268, 316, 367, 406, 226, , 230
ESP10, 209, 266, 317, 372, 412, 228, , 232
ESP10, 208, 266, 317, 371, 411, 230, , 234
ESP10, 206, 261, 311, 366, 409, 232, , 236
ESP10, 208, 261, 314, 365, 409, 234, , 238
ESP10, 210, 259, 313, 362, 408, 237, , 241
ESP10, 207, 260, 315, 359, 408, 239, , 243
ESP10, 215, 263, 318, 359, 409, 241, , 245
ESP10, 217, 272, 321, 358, 412, 243, , 247
ESP10, 221, 275, 316, 355, 409, 245, , 249
ESP10, 232, 278, 320, 362, 411, 248, , 252
ESP10, 242, 280, 324, 364, 410, 250, , 254
ESP10, 255, 283, 333, 374, 418, 252, , 256
ESP10, 258, 283, 336, 380, 420, 254, , 258
ESP10, 251, 273, 327, 374, 413, 257, , 261
ESP10, 245, 269, 323, 375, 413, 259, , 263
ESP10, 247, 277, 325, 379, 416, 261, , 265
ESP10, 248, 284, 334, 383, 423, 263, , 267
ESP10, 247, 284, 333, 379, 420, 265, , 269
ESP10, 254, 286, 331, 379, 419, 268, , 272
ESP10, 261, 289, 339, 376, 421, 270, , 274
ESP10, 260, 292, 336, 374, 420, 272, , 276
ESP10, 255, 287, 330, 370, 415, 274, , 278
ESP10, 254, 296, 330, 376, 413, 277, , 281
ESP10, 245, 291, 328, 372, 408, 279, , 283
ESP10, 243, 292, 327, 374, 406, 281, , 285
ESP10, 240, 291, 326, 374, 406, 283, , 287
ESP10, 239, 293, 328, 375, 406, 285, , 289
ESP10, 244, 290, 328, 373, 404, 288, , 292
ESP10, 249, 290, 331, 372, 404, 290, , 294
ESP10, 248, 293, 332, 372, 407, 292, , 296
ESP10, 249, 294, 331, 371, 408, 294, , 298
ESP10, 247, 294, 329, 369, 408, 297, , 301
ESP10, 251, 298, 326, 367, 409, 299, , 303
ESP10, 256, 297, 332, 368, 416, 301, , 305
ESP10, 254, 299, 334, 367, 413, 303, , 307
ESP10, 251, 296, 336, 365, 410, 305, , 309
ESP10, 256, 300, 339, 368, 411, 308, , 312
ESP10, 258, 306, 338, 370, 410, 310, , 314
ESP10, 263, 319, 345, 377, 416, 312, , 316
ESP10, 267, 320, 346, 378, 415, 314, , 318
ESP10, 276, 322, 351, 382, 421, 316, , 320
ESP10, 282, 325, 351, 383, 422, 319, , 323
ESP10, 288, 330, 358, 389, 426, 321, , 325
ESP10, 289, 331, 359, 388, 427, 323, , 327
ESP10, 284, 331, 356, 386, 423, 325, , 329
ESP10, 290, 333, 358, 387, 425, 328, , 332
ESP10, 293, 334, 361, 388, 430, 330, , 334
ESP10, 295, 343, 362, 388, 429, 332, , 336
ESP10, 295, 347, 364, 388, 429, 334, , 338
ESP10, 298, 343, 361, 388, 426, 336, , 340
ESP10, 295, 342, 358, 385, 421, 339, , 343
ESP10, 288, 336, 352, 380, 416, 341, , 345
ESP10, 293, 336, 353, 381, 420, 343, , 347
ESP10, 300, 338, 354, 381, 423, 345, , 349
ESP10, 302, 340, 355, 383, 422, 348, , 352
ESP10, 297, 336, 352, 379, 419, 350, , 354
ESP10, 304, 342, 357, 385, 423, 352, , 356
ESP10, 304, 339, 355, 385, 421, 354, , 358
ESP10, 304, 340, 356, 385, 419, 356, , 360
ESP10, 306, 341, 358, 384, 417, 359, , 363
ESP10, 309, 342, 357, 385, 417, 361, , 365
ESP10, 308, 339, 352, 379, 411, 363, , 367
ESP10, 314, 343, 354, 384, 413, 365, , 369
ESP10, 311, 345, 356, 385, 410, 368, , 372
ESP10, 303, 334, 346, 376, 401, 370, , 374
ESP10, 301, 333, 345, 376, 401, 372, , 376
ESP10, 306, 339, 352, 381, 406, 374, , 378
ESP10, 294, 325, 340, 368, 396, 376, , 380
ESP10, 306, 337, 352, 380, 409, 379, , 383
ESP10, 299, 330, 347, 371, 404, 381, , 385
ESP10, 306, 336, 355, 378, 410, 383, , 387
ESP10, 307, 336, 354, 380, 409, 385, , 389
ESP10, 314, 339, 358, 385, 413, 387, , 391
ESP10, 317, 338, 359, 387, 413, 390, , 394
ESP10, 321, 345, 361, 391, 415, 392, , 396
ESP10, 324, 345, 363, 391, 415, 394, , 398
ESP10, 318, 340, 360, 383, 407, 396, , 400
ESP10, 313, 333, 356, 378, 402, 399, , 403
ESP10, 304, 327, 349, 369, 393, 401, , 405
ESP10, 307, 333, 355, 371, 396, 403, , 407
ESP10, 304, 331, 354, 369, 392, 405, , 409
ESP10, 295, 322, 350, 363, 384, 407, , 411
ESP10, 287, 317, 345, 359, 376, 410, , 414
ESP10, 284, 315, 344, 358, 371, 412, , 416
ESP10, 281, 313, 340, 356, 371, 414, , 418
ESP10, 274, 305, 332, 348, 363, 416, , 420
ESP10, 277, 308, 333, 349, 364, 419, , 423
ESP10, 269, 299, 321, 336, 353, 421, , 425
ESP10, 283, 312, 335, 347, 366, 423, , 427
ESP10, 283, 311, 330, 345, 364, 425, , 429
ESP10, 275, 305, 323, 341, 357, 427, , 431
ESP10, 280, 309, 323, 344, 359, 430, , 434
ESP10, 284, 313, 329, 350, 365, 432, , 436
ESP10, 283, 311, 328, 348, 363, 434, , 438
ESP10, 280, 310, 326, 346, 360, 436, , 440
ESP10, 274, 305, 321, 341, 355, 438, , 442
ESP10, 276, 308, 325, 348, 358, 441, , 445
ESP10, 280, 308, 325, 347, 362, 443, , 447
ESP10, 284, 310, 331, 349, 363, 445, , 449
ESP10, 287, 309, 330, 348, 362, 447, , 451
ESP10, 295, 313, 333, 350, 366, 450, , 454
ESP10, 299, 312, 333, 347, 367, 452, , 456
ESP10, 288, 301, 323, 337, 357, 454, , 458
ESP10, 283, 298, 319, 331, 351, 456, , 460
ESP10, 287, 303, 322, 338, 355, 458, , 462
ESP10, 282, 300, 320, 337, 352, 461, , 465
ESP10, 284, 302, 325, 343, 354, 463, , 467
ESP10, 286, 307, 331, 347, 360, 465, , 469
ESP10, 288, 310, 332, 350, 364, 467, , 471
ESP10, 295, 316, 341, 356, 369, 470, , 474
ESP10, 298, 317, 343, 357, 371, 472, , 476
ESP10, 295, 316, 341, 352, 369, 474, , 478
ESP10, 301, 325, 346, 359, 374, 476, , 480
ESP10, 299, 324, 346, 361, 373, 478, , 482
ESP10, 296, 322, 346, 362, 372, 481, , 485
ESP10, 299, 323, 346, 364, 372, 483, , 487
ESP10, 301, 329, 351, 368, 374, 485, , 489
ESP10, 300, 323, 348, 363, 369, 487, , 491
ESP10, 295, 318, 342, 356, 362, 490, , 494
ESP10, 293, 317, 338, 352, 359, 492, , 496
ESP10, 293, 317, 338, 351, 359, 494, , 498
ESP10, 292, 317, 338, 352, 360, 496, , 500
ESP10, 296, 320, 341, 355, 362, 498, , 502
ESP10, 294, 321, 338, 351, 357, 501, , 505
ESP10, 306, 329, 346, 359, 365, 503, , 507
ESP10, 303, 325, 345, 358, 363, 505, , 509
ESP10, 311, 332, 348, 361, 368, 507, , 511
ESP10, 314, 328, 346, 358, 365, 509, , 513
ESP10, 313, 328, 346, 358, 365, 512, , 516
ESP10, 316, 331, 347, 361, 367, 514, , 518
ESP10, 318, 333, 351, 363, 369, 516, , 520
ESP10, 319, 337, 354, 364, 371, 518, , 522
ESP10, 328, 347, 363, 373, 383, 521, , 525
ESP10, 326, 347, 361, 372, 382, 523, , 527
ESP10, 327, 348, 363, 373, 382, 525, , 529
ESP10, 326, 348, 361, 370, 382, 527, , 531
ESP10, 324, 348, 361, 369, 382, 529, , 533
ESP10, 326, 351, 363, 371, 383, 532, , 536
ESP10, 328, 351, 362, 370, 383, 534, , 538
ESP10, 329, 351, 364, 373, 383, 536, , 540
ESP10, 336, 355, 368, 378, 387, 538, , 542
ESP10, 338, 360, 370, 379, 392, 541, , 545
ESP10, 339, 360, 373, 381, 392, 543, , 547
ESP10, 340, 361, 373, 382, 391, 545, , 549
ESP10, 339, 360, 372, 381, 389, 547, , 551
ESP10, 340, 360, 372, 382, 389, 549, , 553
ESP10, 340, 359, 372, 383, 388, 552, , 556
ESP10, 340, 358, 371, 384, 389, 554, , 558
ESP10, 341, 361, 370, 384, 389, 556, , 560
ESP10, 344, 363, 371, 385, 389, 558, , 562
ESP10, 344, 362, 369, 383, 387, 561, , 565
ESP10, 346, 362, 370, 382, 387, 563, , 567
ESP10, 348, 362, 373, 383, 390, 565, , 569
ESP10, 346, 359, 372, 381, 387, 567, , 571
ESP10, 349, 359, 373, 383, 389, 569, , 573
ESP10, 350, 357, 372, 381, 388, 572, , 576
ESP10, 352, 359, 376, 382, 389, 574, , 578
ESP10, 355, 362, 377, 384, 390, 576, , 580
ESP10, 358, 367, 381, 388, 393, 578, , 582
ESP10, 354, 364, 377, 385, 390, 580, , 584
ESP10, 353, 363, 375, 383, 387, 583, , 587
ESP10, 355, 368, 375, 382, 387, 585, , 589
ESP10, 353, 366, 375, 379, 385, 587, , 591
ESP10, 354, 366, 375, 380, 385, 589, , 593
ESP10, 352, 363, 373, 377, 384, 592, , 596
ESP10, 353, 362, 371, 376, 383, 594, , 598
ESP10, 353, 365, 372, 377, 383, 596, , 600
ESP10, 357, 366, 373, 379, 385, 598, , 602
ESP10, 353, 362, 369, 375, 381, 600, , 604
ESP10, 357, 363, 372, 377, 383, 603, , 607
ESP10, 356, 363, 372, 378, 383, 605, , 609
ESP10, 358, 364, 373, 379, 384, 607, , 611
ESP10, 360, 366, 374, 381, 386, 609, , 613
ESP10, 361, 366, 373, 381, 386, 612, , 616
ESP10, 361, 366, 374, 380, 385, 614, , 618
ESP10, 364, 371, 376, 384, 388, 616, , 620
ESP10, 367, 374, 378, 386, 390, 618, , 622
ESP10, 369, 375, 380, 387, 392, 620, , 624
ESP10, 367, 374, 379, 386, 390, 623, , 627
ESP10, 373, 381, 386, 392, 395, 625, , 629
ESP10, 372, 381, 387, 392, 395, 627, , 631
ESP10, 377, 385, 391, 396, 399, 629, , 633
ESP10, 378, 383, 390, 395, 397, 632, , 636
ESP10, 378, 383, 390, 395, 397, 634, , 638
ESP10, 380, 385, 391, 396, 399, 636, , 640
ESP10, 381, 386, 391, 397, 399, 638, , 642
ESP10, 380, 386, 391, 395, 398, 640, , 644
ESP10, 379, 386, 391, 395, 398, 643, , 647
ESP10, 381, 388, 393, 397, 399, 645, , 649
ESP10, 382, 389, 394, 399, 400, 647, , 651
ESP10, 381, 388, 393, 398, 400, 649, , 653
ESP10, 381, 390, 394, 398, 401, 651, , 655
ESP10, 378, 387, 391, 396, 399, 654, , 658
ESP10, 386, 393, 397, 401, 405, 656, , 660
ESP10, 386, 392, 396, 401, 404, 658, , 662
ESP10, 387, 392, 397, 400, 405, 660, , 664
ESP10, 383, 389, 394, 397, 401, 663, , 667
ESP10, 383, 389, 394, 396, 400, 665, , 669
ESP10, 380, 387, 392, 393, 398, 667, , 671
ESP10, 383, 389, 394, 397, 400, 669, , 673
ESP10, 385, 391, 396, 398, 401, 671, , 675
ESP10, 385, 389, 395, 397, 400, 674, , 678
ESP10, 386, 389, 395, 398, 400, 676, , 680
ESP10, 386, 389, 394, 397, 399, 678, , 682
ESP10, 387, 391, 396, 399, 401, 680, , 684
ESP10, 392, 395, 399, 401, 403, 683, , 687
ESP10, 392, 395, 399, 402, 403, 685, , 689
ESP10, 392, 395, 399, 401, 403, 687, , 691
ESP10, 392, 395, 399, 401, 402, 689, , 693
ESP10, 393, 396, 399, 402, 403, 691, , 695
ESP10, 393, 397, 399, 402, 403, 694, , 698
ESP10, 392, 397, 399, 402, 402, 696, , 700
ESP10, 392, 396, 398, 401, 401, 698, , 702
ESP10, 391, 396, 398, 400, 401, 700, , 704
ESP10, 393, 398, 399, 402, 402, 703, , 707
ESP10, 392, 398, 399, 401, 402, 705, , 709
ESP10, 392, 397, 399, 401, 402, 707, , 711
ESP10, 392, 397, 400, 401, 402, 709, , 713
ESP10, 393, 398, 400, 402, 403, 711, , 715
ESP10, 393, 398, 400, 401, 402, 714, , 718
ESP10, 392, 397, 399, 401, 402, 716, , 720
ESP10, 392, 397, 399, 401, 402, 718, , 722
ESP10, 392, 397, 399, 401, 402, 720, , 724
ESP10, 393, 397, 399, 401, 402, 722, , 726
ESP10, 393, 397, 400, 401, 402, 725, , 729
ESP10, 394, 398, 400, 401, 403, 727, , 731
ESP10, 395, 398, 400, 402, 403, 729, , 733
ESP10, 395, 399, 400, 402, 403, 731, , 735
ESP10, 396, 400, 401, 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|2026-07-28
TDAO3W_SQIN.ESPF10.csv|2026-07-28
TDAO3W_SQIN.ESPFM.csv|2026-07-28
APR-SEP
COLUMBIA - THE DALLES DAM
(
TDAO3
)
Forecasts for Water Year
2027
Official Water Supply
ESP with 10 Days QPF
Ensemble:
2026-07-28
Issued:
2026-07-28
Hide Forecast
Forecast
Period
Forecasts Are in KAF
30 Year
Average
(1991-2020)
90 %
50 %
%
Average
10 %
APR-SEP
67282
88850
94
111554
94166
APR-JUL
57456
75958
93
95321
81933
APR-AUG
63263
83598
94
105390
89196
JAN-SEP
82125
106840
92
133527
115946
JAN-JUL
72189
93452
90
118603
103714
OCT-SEP
94714
121170
92
152271
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|2026-07-28
TDAO3W_SQIN.ESPF10.csv|2026-07-28
TDAO3W_SQIN.ESPFM.csv|2026-07-28
APR-SEP
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ESP10,ESPM,ESP0
ESP10,ESPM,ESP0
Last Forecast
