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COLUMBIA - GRAND COULEE DAM
(
GCDW1
)
Forecasts for Water Year
2025
Official Water Supply
ESP with 10 Days QPF
Ensemble:
2025-06-30
Issued:
2025-06-30
Hide Forecast
Forecast
Period
Forecasts Are in KAF
30 Year
Average
(1991-2020)
90 %
50 %
%
Average
10 %
APR-SEP
46388
47006
76
48478
61483
APR-JUL
39819
40168
76
40581
52774
APR-AUG
43720
44297
76
45064
58186
JAN-SEP
54120
54737
78
56209
70457
JAN-JUL
47550
47900
78
48313
61749
OCT-SEP
62418
63035
80
64507
78842
Experimental Water Supply
HEFS with 15 days EQPF
Ensemble:
2025-06-30
Issued:
2025-06-30
Hide Forecast
APR-SEP
46732
47611
77
49205
61483
APR-JUL
40205
40614
77
41193
52774
APR-AUG
44141
44890
77
45826
58186
JAN-SEP
54464
55343
79
56936
70457
JAN-JUL
47936
48346
78
48925
61749
OCT-SEP
62762
63641
81
65234
78842
Reference
ESP with 0 Days QPF
Ensemble:
2025-06-30
Issued:
2025-06-30
Hide Forecast
APR-SEP
46963
47794
78
50151
61483
APR-JUL
40144
40745
77
41789
52774
APR-AUG
44119
44972
77
46452
58186
JAN-SEP
54694
55525
79
57882
70457
JAN-JUL
47876
48476
79
49521
61749
OCT-SEP
62992
63823
81
66181
78842
Move the mouse over the desired "Forecast Period" to display a graph.
ESP10, 199, 269, 332, 383, 415, 70, , 74
ESP10, 202, 270, 332, 386, 417, 73, , 77
ESP10, 203, 281, 332, 388, 421, 75, , 79
ESP10, 201, 286, 330, 386, 420, 78, , 82
ESP10, 203, 288, 331, 386, 419, 80, , 84
ESP10, 204, 288, 336, 385, 424, 83, , 87
ESP10, 209, 287, 335, 385, 428, 85, , 89
ESP10, 211, 286, 337, 387, 428, 88, , 92
ESP10, 204, 279, 329, 381, 421, 90, , 94
ESP10, 203, 279, 326, 378, 421, 92, , 96
ESP10, 202, 280, 325, 373, 417, 95, , 99
ESP10, 199, 280, 324, 373, 415, 97, , 101
ESP10, 205, 285, 330, 381, 423, 100, , 104
ESP10, 208, 287, 333, 383, 426, 102, , 106
ESP10, 210, 285, 331, 378, 424, 105, , 109
ESP10, 202, 280, 324, 374, 421, 107, , 111
ESP10, 199, 276, 323, 377, 417, 110, , 114
ESP10, 192, 268, 318, 370, 411, 112, , 116
ESP10, 188, 264, 320, 368, 411, 114, , 118
ESP10, 183, 259, 317, 370, 412, 117, , 121
ESP10, 182, 262, 322, 370, 412, 119, , 123
ESP10, 189, 272, 329, 378, 418, 122, , 126
ESP10, 184, 272, 323, 377, 417, 124, , 128
ESP10, 188, 278, 329, 383, 422, 127, , 131
ESP10, 191, 282, 333, 384, 423, 129, , 133
ESP10, 194, 296, 338, 392, 426, 132, , 136
ESP10, 202, 301, 342, 396, 433, 134, , 138
ESP10, 210, 309, 349, 402, 439, 136, , 140
ESP10, 207, 306, 347, 399, 437, 139, , 143
ESP10, 203, 302, 346, 401, 436, 141, , 145
ESP10, 188, 287, 333, 388, 428, 144, , 148
ESP10, 185, 284, 331, 383, 427, 146, , 150
ESP10, 188, 285, 334, 381, 430, 149, , 153
ESP10, 183, 281, 327, 373, 424, 151, , 155
ESP10, 180, 272, 316, 363, 414, 154, , 158
ESP10, 179, 270, 316, 360, 411, 156, , 160
ESP10, 186, 273, 322, 363, 417, 158, , 162
ESP10, 177, 260, 315, 355, 407, 161, , 165
ESP10, 175, 256, 314, 352, 406, 163, , 167
ESP10, 185, 270, 327, 364, 416, 166, , 170
ESP10, 204, 286, 343, 376, 430, 168, , 172
ESP10, 209, 294, 343, 387, 431, 171, , 175
ESP10, 200, 283, 333, 376, 419, 173, , 177
ESP10, 211, 287, 338, 376, 424, 176, , 180
ESP10, 175, 254, 302, 339, 388, 178, , 182
ESP10, 169, 243, 294, 331, 383, 180, , 184
ESP10, 174, 249, 299, 337, 391, 183, , 187
ESP10, 190, 262, 315, 348, 406, 185, , 189
ESP10, 195, 266, 320, 354, 410, 188, , 192
ESP10, 204, 272, 326, 360, 419, 190, , 194
ESP10, 202, 269, 318, 360, 415, 193, , 197
ESP10, 211, 283, 322, 368, 421, 195, , 199
ESP10, 219, 295, 341, 376, 426, 198, , 202
ESP10, 216, 293, 339, 377, 423, 200, , 204
ESP10, 209, 286, 332, 374, 417, 202, , 206
ESP10, 218, 287, 332, 376, 421, 205, , 209
ESP10, 213, 280, 324, 367, 414, 207, , 211
ESP10, 216, 280, 324, 373, 415, 210, , 214
ESP10, 219, 285, 329, 383, 418, 212, , 216
ESP10, 231, 292, 339, 388, 423, 215, , 219
ESP10, 231, 291, 339, 391, 425, 217, , 221
ESP10, 229, 290, 337, 386, 425, 220, , 224
ESP10, 232, 290, 338, 384, 425, 222, , 226
ESP10, 228, 278, 330, 376, 423, 224, , 228
ESP10, 232, 281, 340, 382, 430, 227, , 231
ESP10, 236, 285, 346, 384, 433, 229, , 233
ESP10, 228, 277, 342, 377, 428, 232, , 236
ESP10, 238, 288, 351, 385, 436, 234, , 238
ESP10, 235, 284, 347, 381, 435, 237, , 241
ESP10, 236, 288, 341, 375, 431, 239, , 243
ESP10, 250, 311, 357, 389, 445, 242, , 246
ESP10, 250, 318, 358, 391, 448, 244, , 248
ESP10, 245, 312, 353, 388, 446, 247, , 251
ESP10, 238, 302, 346, 380, 439, 249, , 253
ESP10, 229, 285, 340, 366, 425, 251, , 255
ESP10, 224, 276, 333, 360, 419, 254, , 258
ESP10, 227, 277, 340, 362, 422, 256, , 260
ESP10, 232, 285, 344, 368, 425, 259, , 263
ESP10, 233, 287, 345, 372, 426, 261, , 265
ESP10, 234, 280, 333, 363, 417, 264, , 268
ESP10, 230, 272, 322, 353, 408, 266, , 270
ESP10, 243, 280, 328, 359, 414, 269, , 273
ESP10, 239, 279, 322, 353, 411, 271, , 275
ESP10, 252, 289, 333, 364, 421, 273, , 277
ESP10, 246, 280, 328, 361, 415, 276, , 280
ESP10, 256, 290, 337, 374, 424, 278, , 282
ESP10, 252, 284, 331, 366, 418, 281, , 285
ESP10, 256, 288, 333, 366, 428, 283, , 287
ESP10, 256, 292, 334, 369, 429, 286, , 290
ESP10, 264, 298, 341, 373, 433, 288, , 292
ESP10, 267, 303, 345, 376, 432, 291, , 295
ESP10, 258, 300, 336, 367, 422, 293, , 297
ESP10, 262, 303, 344, 370, 427, 295, , 299
ESP10, 267, 308, 350, 375, 436, 298, , 302
ESP10, 265, 320, 355, 380, 438, 303, , 307
ESP10, 266, 319, 357, 380, 440, 305, , 309
ESP10, 270, 321, 357, 385, 442, 308, , 312
ESP10, 276, 325, 358, 387, 443, 310, , 314
ESP10, 285, 327, 361, 392, 444, 313, , 317
ESP10, 287, 328, 362, 397, 445, 315, , 319
ESP10, 289, 329, 364, 401, 446, 317, , 321
ESP10, 291, 329, 365, 402, 445, 320, , 324
ESP10, 289, 334, 368, 404, 443, 322, , 326
ESP10, 293, 337, 372, 404, 445, 325, , 329
ESP10, 296, 343, 374, 404, 446, 327, , 331
ESP10, 303, 353, 379, 409, 449, 330, , 334
ESP10, 302, 353, 381, 409, 449, 332, , 336
ESP10, 305, 358, 383, 410, 451, 335, , 339
ESP10, 313, 363, 390, 415, 455, 337, , 341
ESP10, 318, 365, 390, 416, 454, 339, , 343
ESP10, 320, 370, 392, 419, 457, 342, , 346
ESP10, 317, 369, 391, 417, 455, 344, , 348
ESP10, 314, 366, 393, 415, 453, 347, , 351
ESP10, 315, 366, 394, 417, 454, 349, , 353
ESP10, 319, 368, 396, 420, 454, 352, , 356
ESP10, 313, 366, 392, 415, 450, 354, , 358
ESP10, 308, 367, 387, 411, 446, 357, , 361
ESP10, 315, 371, 388, 414, 449, 359, , 363
ESP10, 313, 373, 387, 415, 451, 361, , 365
ESP10, 314, 374, 390, 417, 453, 364, , 368
ESP10, 321, 378, 395, 422, 459, 366, , 370
ESP10, 321, 376, 394, 421, 459, 369, , 373
ESP10, 323, 373, 392, 419, 458, 371, , 375
ESP10, 331, 374, 393, 418, 459, 374, , 378
ESP10, 328, 373, 392, 416, 457, 376, , 380
ESP10, 331, 373, 393, 416, 458, 379, , 383
ESP10, 334, 377, 392, 416, 457, 381, , 385
ESP10, 328, 365, 382, 408, 447, 383, , 387
ESP10, 336, 374, 394, 417, 453, 386, , 390
ESP10, 334, 377, 395, 416, 450, 388, , 392
ESP10, 340, 382, 401, 422, 453, 391, , 395
ESP10, 347, 387, 407, 426, 456, 393, , 397
ESP10, 347, 386, 406, 426, 455, 396, , 400
ESP10, 347, 389, 407, 430, 455, 398, , 402
ESP10, 336, 377, 395, 419, 442, 401, , 405
ESP10, 330, 372, 388, 414, 437, 403, , 407
ESP10, 326, 367, 387, 410, 434, 405, , 409
ESP10, 330, 369, 392, 413, 436, 408, , 412
ESP10, 333, 369, 393, 412, 438, 410, , 414
ESP10, 337, 370, 395, 412, 440, 413, , 417
ESP10, 336, 373, 394, 411, 439, 415, , 419
ESP10, 331, 364, 387, 405, 435, 418, , 422
ESP10, 326, 355, 380, 402, 428, 420, , 424
ESP10, 336, 360, 387, 410, 436, 423, , 427
ESP10, 344, 373, 395, 420, 444, 425, , 429
ESP10, 346, 379, 398, 422, 446, 427, , 431
ESP10, 348, 380, 398, 421, 446, 430, , 434
ESP10, 348, 379, 397, 417, 443, 432, , 436
ESP10, 349, 375, 394, 412, 437, 435, , 439
ESP10, 347, 372, 392, 409, 433, 437, , 441
ESP10, 350, 375, 394, 411, 434, 440, , 444
ESP10, 350, 374, 395, 409, 433, 442, , 446
ESP10, 353, 377, 404, 413, 438, 445, , 449
ESP10, 346, 374, 396, 408, 430, 447, , 451
ESP10, 343, 369, 388, 405, 423, 449, , 453
ESP10, 333, 360, 378, 394, 414, 452, , 456
ESP10, 339, 365, 381, 396, 418, 454, , 458
ESP10, 342, 368, 383, 401, 421, 457, , 461
ESP10, 340, 367, 379, 398, 418, 459, , 463
ESP10, 335, 364, 376, 396, 413, 462, , 466
ESP10, 327, 357, 369, 389, 406, 464, , 468
ESP10, 326, 353, 364, 385, 401, 467, , 471
ESP10, 320, 347, 357, 381, 396, 469, , 473
ESP10, 316, 344, 353, 377, 395, 471, , 475
ESP10, 315, 342, 351, 374, 394, 474, , 478
ESP10, 316, 340, 350, 370, 393, 476, , 480
ESP10, 310, 333, 345, 364, 387, 479, , 483
ESP10, 314, 335, 351, 368, 391, 481, , 485
ESP10, 316, 337, 353, 369, 395, 484, , 488
ESP10, 309, 326, 344, 358, 386, 486, , 490
ESP10, 311, 325, 341, 353, 383, 489, , 493
ESP10, 308, 321, 338, 348, 377, 491, , 495
ESP10, 292, 307, 325, 335, 362, 493, , 497
ESP10, 290, 306, 324, 334, 361, 496, , 500
ESP10, 289, 307, 325, 338, 361, 498, , 502
ESP10, 297, 316, 334, 350, 371, 501, , 505
ESP10, 296, 317, 336, 355, 373, 503, , 507
ESP10, 301, 325, 343, 360, 377, 506, , 510
ESP10, 308, 330, 348, 366, 382, 508, , 512
ESP10, 310, 330, 348, 368, 383, 511, , 515
ESP10, 305, 328, 343, 361, 378, 513, , 517
ESP10, 310, 335, 349, 366, 384, 515, , 519
ESP10, 301, 327, 344, 359, 378, 518, , 522
ESP10, 295, 322, 342, 357, 374, 520, , 524
ESP10, 295, 321, 341, 358, 376, 523, , 527
ESP10, 299, 329, 346, 364, 380, 525, , 529
ESP10, 300, 331, 349, 366, 382, 528, , 532
ESP10, 298, 327, 347, 363, 380, 530, , 534
ESP10, 300, 329, 347, 365, 380, 533, , 537
ESP10, 300, 331, 348, 365, 379, 535, , 539
ESP10, 303, 334, 351, 368, 381, 537, , 541
ESP10, 301, 331, 348, 366, 379, 540, , 544
ESP10, 300, 327, 345, 362, 375, 542, , 546
ESP10, 302, 333, 344, 363, 374, 545, , 549
ESP10, 310, 341, 350, 370, 383, 547, , 551
ESP10, 314, 342, 351, 371, 384, 550, , 554
ESP10, 316, 345, 352, 374, 385, 552, , 556
ESP10, 313, 339, 351, 369, 382, 555, , 559
ESP10, 314, 339, 354, 370, 382, 557, , 561
ESP10, 315, 339, 355, 372, 383, 559, , 563
ESP10, 315, 340, 356, 374, 384, 562, , 566
ESP10, 320, 345, 363, 380, 390, 564, , 568
ESP10, 325, 350, 369, 385, 396, 567, , 571
ESP10, 326, 351, 371, 386, 400, 569, , 573
ESP10, 327, 353, 372, 390, 402, 572, , 576
ESP10, 324, 356, 368, 385, 400, 574, , 578
ESP10, 321, 355, 368, 383, 399, 577, , 581
ESP10, 320, 354, 369, 382, 398, 579, , 583
ESP10, 326, 363, 376, 388, 404, 582, , 586
ESP10, 324, 360, 374, 387, 401, 584, , 588
ESP10, 335, 369, 384, 399, 409, 586, , 590
ESP10, 322, 356, 370, 385, 395, 589, , 593
ESP10, 324, 357, 372, 388, 395, 591, , 595
ESP10, 323, 353, 370, 384, 391, 594, , 598
ESP10, 324, 349, 367, 382, 388, 596, , 600
ESP10, 318, 341, 359, 376, 380, 599, , 603
ESP10, 320, 342, 363, 377, 383, 601, , 605
ESP10, 330, 350, 370, 386, 397, 604, , 608
ESP10, 325, 346, 363, 380, 391, 606, , 610
ESP10, 334, 356, 373, 388, 398, 608, , 612
ESP10, 336, 355, 372, 388, 395, 611, , 615
ESP10, 338, 358, 372, 388, 396, 613, , 617
ESP10, 343, 366, 381, 392, 402, 616, , 620
ESP10, 341, 361, 380, 391, 399, 618, , 622
ESP10, 350, 365, 384, 395, 406, 621, , 625
ESP10, 351, 362, 383, 393, 404, 623, , 627
ESP10, 348, 361, 381, 391, 400, 626, , 630
ESP10, 347, 361, 382, 391, 399, 628, , 632
ESP10, 349, 365, 383, 392, 401, 630, , 634
ESP10, 354, 369, 387, 395, 407, 633, , 637
ESP10, 358, 374, 391, 399, 409, 635, , 639
ESP10, 360, 377, 388, 396, 407, 638, , 642
ESP10, 364, 383, 394, 401, 412, 640, , 644
ESP10, 361, 379, 391, 400, 408, 643, , 647
ESP10, 360, 376, 390, 397, 408, 645, , 649
ESP10, 357, 370, 383, 393, 401, 648, , 652
ESP10, 359, 371, 383, 392, 400, 650, , 654
ESP10, 360, 373, 384, 393, 400, 652, , 656
ESP10, 365, 378, 388, 398, 403, 655, , 659
ESP10, 373, 385, 395, 405, 410, 657, , 661
ESP10, 376, 386, 397, 406, 413, 660, , 664
ESP10, 377, 386, 398, 406, 414, 662, , 666
ESP10, 377, 387, 397, 408, 413, 665, , 669
ESP10, 378, 386, 394, 406, 411, 667, , 671
ESP10, 385, 393, 402, 411, 418, 670, , 674
ESP10, 382, 391, 398, 409, 415, 672, , 676
ESP10, 380, 389, 396, 407, 412, 674, , 678
ESP10, 382, 387, 394, 407, 411, 677, , 681
ESP10, 387, 395, 402, 412, 415, 679, , 683
ESP10, 383, 392, 402, 405, 408, 704, , 708
ESP10, 385, 395, 403, 407, 410, 706, , 710
ESP10, 384, 396, 403, 407, 410, 709, , 713
ESP10, 388, 401, 408, 411, 413, 711, , 715
ESP10, 391, 404, 410, 415, 418, 714, , 718
ESP10, 395, 405, 411, 415, 419, 716, , 720
ESP10, 398, 408, 413, 418, 421, 718, , 722
ESP10, 400, 408, 414, 419, 421, 721, , 725
ESP10, 399, 408, 414, 417, 420, 723, , 727
ESP10, 402, 412, 417, 420, 423, 726, , 730
ESP10, 401, 413, 417, 419, 422, 728, , 732
ESP10, 402, 412, 416, 419, 422, 731, , 735
ESP10, 407, 414, 419, 422, 424, 733, , 737
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Data Files
/chpsesp/ensemble/watersupply/GCDW1W_SQIN.ESPF10.csv
GCDW1W_SQIN.ESPF0.csv|2025-06-30
GCDW1W_SQIN.ESPF10.csv|2025-06-30
GCDW1W_SQIN.ESPFM.csv|2025-06-30
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ESP10,ESPM,ESP0
ESP10,ESPM,ESP0
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