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Archive:
Water Year
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STEHEKIN - AT STEHEKIN
(
STHW1
)
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
603
604
74
608
814
APR-JUL
552
552
78
552
710
APR-AUG
585
586
75
587
778
JAN-SEP
827
828
91
832
913
JAN-JUL
776
776
96
776
809
OCT-SEP
1107
1108
106
1113
1046
Experimental Water Supply
HEFS with 15 days EQPF
Ensemble:
2026-07-28
Issued:
2026-07-28
Hide Forecast
APR-SEP
603
604
74
608
814
APR-JUL
552
552
78
552
710
APR-AUG
585
586
75
587
778
JAN-SEP
827
828
91
832
913
JAN-JUL
776
776
96
776
809
OCT-SEP
1107
1108
106
1113
1046
Reference
ESP with 0 Days QPF
Ensemble:
2026-07-28
Issued:
2026-07-28
Hide Forecast
APR-SEP
603
604
74
611
814
APR-JUL
552
552
78
552
710
APR-AUG
585
586
75
589
778
JAN-SEP
827
828
91
835
913
JAN-JUL
776
776
96
776
809
OCT-SEP
1107
1109
106
1115
1046
Move the mouse over the desired "Forecast Period" to display a graph.
ESP10, 247, 331, 381, 426, 459, 70, , 74
ESP10, 248, 331, 380, 424, 459, 72, , 76
ESP10, 249, 333, 381, 426, 459, 75, , 79
ESP10, 252, 333, 381, 425, 459, 77, , 81
ESP10, 256, 336, 383, 429, 461, 79, , 83
ESP10, 256, 338, 383, 429, 461, 81, , 85
ESP10, 258, 337, 382, 428, 461, 84, , 88
ESP10, 259, 339, 385, 429, 462, 86, , 90
ESP10, 259, 338, 386, 428, 462, 88, , 92
ESP10, 257, 334, 381, 423, 458, 90, , 94
ESP10, 259, 337, 384, 426, 460, 92, , 96
ESP10, 259, 339, 382, 428, 462, 95, , 99
ESP10, 260, 339, 382, 429, 465, 97, , 101
ESP10, 260, 340, 380, 429, 464, 99, , 103
ESP10, 257, 338, 378, 427, 463, 101, , 105
ESP10, 247, 328, 370, 418, 455, 103, , 107
ESP10, 243, 323, 365, 414, 450, 106, , 110
ESP10, 241, 324, 363, 411, 451, 108, , 112
ESP10, 247, 329, 368, 416, 457, 110, , 114
ESP10, 247, 327, 365, 414, 456, 112, , 116
ESP10, 241, 319, 359, 408, 452, 115, , 119
ESP10, 246, 324, 362, 414, 459, 117, , 121
ESP10, 234, 315, 353, 403, 450, 119, , 123
ESP10, 241, 320, 361, 410, 455, 121, , 125
ESP10, 243, 323, 363, 414, 456, 123, , 127
ESP10, 237, 320, 359, 410, 452, 126, , 130
ESP10, 237, 319, 362, 408, 452, 128, , 132
ESP10, 242, 323, 367, 411, 455, 130, , 134
ESP10, 241, 318, 363, 407, 450, 132, , 136
ESP10, 237, 309, 356, 399, 443, 135, , 139
ESP10, 229, 300, 349, 391, 434, 137, , 141
ESP10, 235, 308, 355, 401, 438, 139, , 143
ESP10, 236, 313, 357, 403, 438, 141, , 145
ESP10, 247, 323, 366, 415, 448, 143, , 147
ESP10, 248, 325, 365, 413, 447, 146, , 150
ESP10, 248, 325, 367, 414, 448, 148, , 152
ESP10, 250, 331, 369, 415, 448, 150, , 154
ESP10, 246, 331, 367, 415, 444, 152, , 156
ESP10, 249, 334, 371, 417, 446, 155, , 159
ESP10, 247, 332, 371, 415, 446, 157, , 161
ESP10, 249, 331, 371, 415, 449, 159, , 163
ESP10, 257, 334, 372, 418, 451, 161, , 165
ESP10, 257, 334, 370, 417, 449, 163, , 167
ESP10, 256, 336, 375, 417, 453, 166, , 170
ESP10, 253, 334, 373, 415, 453, 168, , 172
ESP10, 254, 335, 373, 416, 456, 170, , 174
ESP10, 245, 325, 364, 409, 449, 172, , 176
ESP10, 252, 332, 372, 417, 458, 174, , 178
ESP10, 252, 329, 368, 419, 456, 177, , 181
ESP10, 259, 330, 371, 424, 460, 179, , 183
ESP10, 262, 334, 367, 424, 456, 181, , 185
ESP10, 273, 334, 367, 421, 454, 183, , 187
ESP10, 275, 333, 370, 420, 453, 186, , 190
ESP10, 291, 352, 388, 432, 466, 188, , 192
ESP10, 292, 348, 389, 430, 466, 190, , 194
ESP10, 294, 348, 392, 428, 467, 192, , 196
ESP10, 291, 343, 389, 422, 462, 194, , 198
ESP10, 289, 340, 389, 423, 460, 197, , 201
ESP10, 294, 347, 399, 432, 464, 199, , 203
ESP10, 288, 342, 395, 433, 463, 201, , 205
ESP10, 283, 338, 391, 431, 460, 203, , 207
ESP10, 293, 344, 395, 435, 468, 206, , 210
ESP10, 273, 326, 376, 415, 448, 208, , 212
ESP10, 261, 315, 363, 402, 436, 210, , 214
ESP10, 257, 312, 364, 400, 432, 212, , 216
ESP10, 249, 301, 356, 389, 423, 214, , 218
ESP10, 271, 320, 368, 403, 442, 217, , 221
ESP10, 261, 316, 361, 395, 434, 219, , 223
ESP10, 241, 295, 341, 377, 413, 221, , 225
ESP10, 237, 288, 334, 372, 405, 223, , 227
ESP10, 247, 297, 343, 381, 416, 226, , 230
ESP10, 264, 310, 357, 395, 430, 228, , 232
ESP10, 263, 309, 356, 397, 427, 230, , 234
ESP10, 266, 308, 356, 395, 428, 232, , 236
ESP10, 267, 309, 357, 396, 429, 234, , 238
ESP10, 263, 304, 353, 393, 425, 237, , 241
ESP10, 257, 299, 347, 388, 419, 239, , 243
ESP10, 247, 292, 336, 379, 411, 241, , 245
ESP10, 244, 290, 334, 378, 408, 243, , 247
ESP10, 239, 288, 333, 376, 405, 245, , 249
ESP10, 251, 304, 345, 389, 416, 248, , 252
ESP10, 254, 308, 349, 392, 419, 250, , 254
ESP10, 264, 317, 363, 400, 426, 252, , 256
ESP10, 265, 318, 362, 399, 425, 254, , 258
ESP10, 262, 314, 362, 396, 421, 257, , 261
ESP10, 255, 308, 358, 389, 413, 259, , 263
ESP10, 263, 318, 364, 397, 420, 261, , 265
ESP10, 274, 319, 366, 405, 428, 263, , 267
ESP10, 278, 318, 365, 405, 428, 265, , 269
ESP10, 264, 306, 352, 392, 417, 268, , 272
ESP10, 266, 311, 354, 396, 418, 270, , 274
ESP10, 270, 316, 357, 401, 422, 272, , 276
ESP10, 263, 313, 354, 395, 418, 274, , 278
ESP10, 267, 316, 355, 395, 417, 277, , 281
ESP10, 272, 326, 359, 399, 420, 279, , 283
ESP10, 275, 330, 361, 401, 421, 281, , 285
ESP10, 279, 332, 363, 403, 421, 283, , 287
ESP10, 284, 331, 364, 402, 424, 285, , 289
ESP10, 271, 322, 358, 390, 417, 288, , 292
ESP10, 269, 324, 359, 391, 420, 290, , 294
ESP10, 271, 325, 361, 391, 420, 292, , 296
ESP10, 278, 328, 366, 393, 422, 294, , 298
ESP10, 277, 327, 371, 394, 421, 297, , 301
ESP10, 281, 332, 373, 402, 423, 299, , 303
ESP10, 283, 336, 374, 402, 423, 301, , 305
ESP10, 284, 333, 369, 398, 420, 303, , 307
ESP10, 282, 329, 365, 396, 416, 305, , 309
ESP10, 290, 337, 372, 402, 423, 308, , 312
ESP10, 290, 341, 372, 403, 431, 310, , 314
ESP10, 305, 348, 382, 411, 440, 312, , 316
ESP10, 309, 349, 382, 409, 438, 314, , 318
ESP10, 315, 355, 390, 415, 442, 316, , 320
ESP10, 315, 354, 390, 413, 440, 319, , 323
ESP10, 324, 361, 398, 420, 446, 321, , 325
ESP10, 322, 362, 396, 417, 444, 323, , 327
ESP10, 315, 355, 389, 409, 438, 325, , 329
ESP10, 315, 354, 388, 411, 438, 328, , 332
ESP10, 316, 357, 388, 410, 441, 330, , 334
ESP10, 322, 359, 390, 413, 449, 332, , 336
ESP10, 323, 358, 393, 412, 448, 334, , 338
ESP10, 323, 360, 392, 414, 447, 336, , 340
ESP10, 321, 358, 390, 412, 444, 339, , 343
ESP10, 320, 352, 383, 405, 437, 341, , 345
ESP10, 319, 356, 384, 405, 438, 343, , 347
ESP10, 318, 357, 382, 405, 435, 345, , 349
ESP10, 320, 358, 386, 406, 435, 348, , 352
ESP10, 317, 354, 381, 402, 431, 350, , 354
ESP10, 326, 364, 391, 412, 438, 352, , 356
ESP10, 326, 367, 391, 413, 438, 354, , 358
ESP10, 330, 368, 391, 417, 440, 356, , 360
ESP10, 334, 368, 393, 418, 440, 359, , 363
ESP10, 338, 373, 395, 420, 441, 361, , 365
ESP10, 332, 366, 396, 412, 435, 363, , 367
ESP10, 337, 366, 396, 412, 435, 365, , 369
ESP10, 336, 366, 394, 411, 433, 368, , 372
ESP10, 333, 364, 386, 406, 428, 370, , 374
ESP10, 335, 365, 386, 408, 429, 372, , 376
ESP10, 346, 372, 395, 419, 438, 374, , 378
ESP10, 340, 366, 390, 413, 432, 376, , 380
ESP10, 345, 370, 395, 417, 437, 379, , 383
ESP10, 339, 370, 395, 411, 433, 381, , 385
ESP10, 345, 372, 399, 416, 435, 383, , 387
ESP10, 342, 373, 400, 415, 433, 385, , 389
ESP10, 360, 393, 420, 434, 449, 387, , 391
ESP10, 367, 402, 426, 441, 455, 390, , 394
ESP10, 374, 405, 428, 442, 457, 392, , 396
ESP10, 381, 411, 433, 448, 462, 394, , 398
ESP10, 380, 409, 430, 445, 459, 396, , 400
ESP10, 380, 409, 428, 446, 456, 399, , 403
ESP10, 378, 408, 424, 444, 452, 401, , 405
ESP10, 381, 408, 426, 445, 452, 403, , 407
ESP10, 379, 403, 421, 441, 448, 405, , 409
ESP10, 372, 395, 416, 433, 441, 407, , 411
ESP10, 370, 392, 414, 428, 439, 410, , 414
ESP10, 359, 382, 404, 420, 429, 412, , 416
ESP10, 356, 382, 401, 416, 426, 414, , 418
ESP10, 348, 375, 394, 411, 418, 416, , 420
ESP10, 344, 370, 389, 405, 413, 419, , 423
ESP10, 342, 366, 387, 400, 408, 421, , 425
ESP10, 355, 381, 400, 412, 421, 423, , 427
ESP10, 352, 379, 395, 411, 422, 425, , 429
ESP10, 340, 368, 384, 401, 412, 427, , 431
ESP10, 337, 364, 384, 398, 412, 430, , 434
ESP10, 337, 362, 384, 399, 411, 432, , 436
ESP10, 339, 361, 379, 397, 411, 434, , 438
ESP10, 346, 362, 379, 396, 409, 436, , 440
ESP10, 342, 357, 375, 391, 404, 438, , 442
ESP10, 343, 358, 377, 393, 402, 441, , 445
ESP10, 347, 362, 379, 396, 405, 443, , 447
ESP10, 351, 363, 383, 397, 407, 445, , 449
ESP10, 357, 369, 389, 402, 411, 447, , 451
ESP10, 357, 371, 391, 401, 411, 450, , 454
ESP10, 354, 369, 388, 398, 408, 452, , 456
ESP10, 351, 367, 384, 395, 405, 454, , 458
ESP10, 349, 363, 379, 391, 400, 456, , 460
ESP10, 356, 371, 387, 397, 405, 458, , 462
ESP10, 354, 370, 388, 397, 405, 461, , 465
ESP10, 356, 371, 388, 397, 406, 463, , 467
ESP10, 358, 372, 389, 399, 407, 465, , 469
ESP10, 359, 375, 389, 400, 408, 467, , 471
ESP10, 359, 376, 389, 400, 408, 470, , 474
ESP10, 358, 369, 385, 395, 402, 472, , 476
ESP10, 359, 373, 387, 396, 403, 474, , 478
ESP10, 361, 376, 390, 399, 408, 476, , 480
ESP10, 362, 378, 390, 400, 408, 478, , 482
ESP10, 370, 387, 401, 411, 418, 481, , 485
ESP10, 385, 402, 415, 427, 434, 483, , 487
ESP10, 387, 403, 415, 427, 436, 485, , 489
ESP10, 386, 402, 414, 426, 434, 487, , 491
ESP10, 381, 398, 410, 422, 429, 490, , 494
ESP10, 385, 396, 411, 420, 428, 492, , 496
ESP10, 386, 399, 412, 421, 429, 494, , 498
ESP10, 384, 398, 410, 420, 429, 496, , 500
ESP10, 383, 396, 410, 418, 427, 498, , 502
ESP10, 382, 396, 411, 418, 425, 501, , 505
ESP10, 382, 396, 410, 417, 424, 503, , 507
ESP10, 384, 399, 412, 418, 426, 505, , 509
ESP10, 383, 399, 411, 416, 426, 507, , 511
ESP10, 382, 398, 409, 415, 425, 509, , 513
ESP10, 385, 399, 410, 416, 426, 512, , 516
ESP10, 388, 401, 412, 417, 427, 514, , 518
ESP10, 398, 410, 423, 428, 438, 516, , 520
ESP10, 401, 412, 423, 427, 439, 518, , 522
ESP10, 405, 416, 427, 431, 442, 521, , 525
ESP10, 405, 415, 427, 430, 441, 523, , 527
ESP10, 404, 415, 427, 432, 440, 525, , 529
ESP10, 403, 410, 422, 429, 434, 527, , 531
ESP10, 405, 412, 423, 430, 435, 529, , 533
ESP10, 421, 428, 436, 443, 448, 532, , 536
ESP10, 421, 428, 435, 443, 449, 534, , 538
ESP10, 423, 428, 435, 443, 449, 536, , 540
ESP10, 424, 430, 437, 444, 451, 538, , 542
ESP10, 424, 432, 437, 445, 450, 541, , 545
ESP10, 424, 431, 437, 444, 450, 543, , 547
ESP10, 426, 434, 439, 446, 453, 545, , 549
ESP10, 412, 422, 427, 434, 441, 547, , 551
ESP10, 414, 422, 429, 435, 441, 549, , 553
ESP10, 415, 422, 430, 437, 441, 552, , 556
ESP10, 416, 423, 430, 437, 442, 554, , 558
ESP10, 419, 424, 432, 437, 443, 556, , 560
ESP10, 419, 425, 431, 437, 443, 558, , 562
ESP10, 422, 429, 435, 440, 446, 561, , 565
ESP10, 418, 424, 431, 436, 441, 563, , 567
ESP10, 418, 423, 431, 437, 441, 565, , 569
ESP10, 423, 427, 435, 441, 445, 567, , 571
ESP10, 421, 426, 432, 439, 443, 569, , 573
ESP10, 420, 425, 431, 437, 442, 572, , 576
ESP10, 420, 424, 430, 437, 441, 574, , 578
ESP10, 421, 424, 431, 437, 441, 576, , 580
ESP10, 422, 425, 432, 438, 442, 578, , 582
ESP10, 421, 425, 431, 437, 441, 580, , 584
ESP10, 419, 422, 428, 433, 437, 583, , 587
ESP10, 418, 421, 428, 433, 437, 585, , 589
ESP10, 423, 426, 432, 437, 441, 587, , 591
ESP10, 424, 427, 434, 438, 442, 589, , 593
ESP10, 423, 426, 433, 436, 440, 592, , 596
ESP10, 424, 428, 434, 437, 441, 594, , 598
ESP10, 423, 428, 433, 437, 440, 596, , 600
ESP10, 423, 429, 434, 437, 441, 598, , 602
ESP10, 423, 428, 433, 436, 439, 600, , 604
ESP10, 421, 426, 431, 434, 437, 603, , 607
ESP10, 425, 429, 434, 437, 439, 605, , 609
ESP10, 426, 430, 435, 437, 440, 607, , 611
ESP10, 428, 432, 436, 439, 441, 609, , 613
ESP10, 427, 432, 436, 439, 441, 612, , 616
ESP10, 426, 431, 435, 438, 439, 614, , 618
ESP10, 428, 433, 437, 440, 441, 616, , 620
ESP10, 427, 431, 436, 439, 440, 618, , 622
ESP10, 425, 430, 434, 437, 438, 620, , 624
ESP10, 425, 429, 434, 436, 437, 623, , 627
ESP10, 425, 430, 434, 436, 437, 625, , 629
ESP10, 426, 430, 434, 436, 438, 627, , 631
ESP10, 426, 431, 435, 437, 438, 629, , 633
ESP10, 426, 430, 435, 436, 438, 632, , 636
ESP10, 425, 429, 433, 434, 436, 634, , 638
ESP10, 427, 430, 433, 435, 438, 636, , 640
ESP10, 428, 430, 433, 435, 437, 638, , 642
ESP10, 429, 431, 433, 435, 437, 640, , 644
ESP10, 429, 431, 434, 435, 437, 643, , 647
ESP10, 429, 431, 434, 436, 437, 645, , 649
ESP10, 429, 431, 434, 436, 437, 647, , 651
ESP10, 430, 432, 434, 435, 437, 649, , 653
ESP10, 430, 432, 434, 436, 437, 651, , 655
ESP10, 429, 432, 434, 435, 437, 654, , 658
ESP10, 431, 433, 435, 437, 438, 656, , 660
ESP10, 430, 433, 434, 436, 437, 658, , 662
ESP10, 432, 433, 435, 437, 438, 660, , 664
ESP10, 431, 433, 435, 437, 438, 663, , 667
ESP10, 431, 433, 435, 437, 438, 665, , 669
ESP10, 432, 434, 437, 438, 439, 667, , 671
ESP10, 429, 431, 432, 433, 434, 669, , 673
ESP10, 429, 431, 432, 433, 434, 671, , 675
ESP10, 429, 431, 432, 433, 434, 674, , 678
ESP10, 430, 432, 432, 433, 434, 676, , 680
ESP10, 430, 431, 432, 433, 434, 678, , 682
ESP10, 426, 429, 430, 431, 431, 680, , 684
ESP10, 426, 429, 430, 430, 431, 683, , 687
ESP10, 427, 429, 430, 431, 431, 685, , 689
ESP10, 427, 429, 430, 431, 431, 687, , 691
ESP10, 427, 429, 430, 430, 431, 689, , 693
ESP10, 425, 427, 428, 429, 429, 691, , 695
ESP10, 426, 428, 429, 429, 430, 694, , 698
ESP10, 428, 429, 430, 430, 431, 696, , 700
ESP10, 426, 428, 429, 429, 430, 698, , 702
ESP10, 426, 428, 428, 429, 429, 700, , 704
ESP10, 428, 429, 430, 430, 431, 703, , 707
ESP10, 428, 429, 430, 431, 431, 705, , 709
ESP10, 428, 429, 430, 430, 431, 707, , 711
ESP10, 426, 427, 428, 429, 429, 709, , 713
ESP10, 416, 420, 423, 424, 425, 711, , 715
ESP10, 423, 425, 427, 427, 428, 714, , 718
ESP10, 423, 424, 426, 427, 427, 716, , 720
ESP10, 423, 424, 426, 427, 427, 718, , 722
ESP10, 423, 424, 426, 426, 427, 720, , 724
ESP10, 422, 424, 425, 426, 426, 722, , 726
ESP10, 421, 422, 424, 425, 425, 725, , 729
ESP10, 423, 424, 425, 426, 426, 727, , 731
ESP10, 423, 424, 425, 426, 426, 729, , 733
ESP10, 424, 425, 426, 426, 426, 731, , 735
ESP10, 426, 426, 427, 428, 428, 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/STHW1W_SQIN.ESPF10.csv
STHW1W_SQIN.ESPF0.csv|2026-07-28
STHW1W_SQIN.ESPF10.csv|2026-07-28
STHW1W_SQIN.ESPFM.csv|2026-07-28
APR-SEP
STEHEKIN - AT STEHEKIN
(
STHW1
)
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
489
720
88
1049
814
APR-JUL
444
631
89
854
710
APR-AUG
472
685
88
978
778
JAN-SEP
566
835
91
1146
913
JAN-JUL
516
738
91
958
809
OCT-SEP
608
955
91
1225
1046
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/STHW1W_SQIN.ESPF10.csv
STHW1W_SQIN.ESPF0.csv|2026-07-28
STHW1W_SQIN.ESPF10.csv|2026-07-28
STHW1W_SQIN.ESPFM.csv|2026-07-28
APR-SEP
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ESP10,ESPM,ESP0
ESP10,ESPM,ESP0
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