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Water Year
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BOISE - ARROWROCK DAM
(
ARKI1
)
Forecasts for Water Year
2026
Natural Forecast
ESP with 10 Days QPF
Ensemble:
2026-05-18
Issued:
2026-05-18
Hide Forecast
Forecast
Period
Forecasts Are in KAF
30 Year
Average
(1991-2020)
90 %
50 %
%
Average
10 %
APR-SEP
626
636
53
701
1212
APR-JUL
563
571
51
632
1121
JAN-SEP
914
925
63
990
1479
JAN-JUL
852
859
62
921
1388
OCT-SEP
1119
1129
69
1194
1636
Experimental
HEFS with 15 days EQPF
Ensemble:
2026-05-18
Issued:
2026-05-18
Hide Forecast
APR-SEP
626
637
53
696
1212
APR-JUL
563
570
51
628
1121
JAN-SEP
915
926
63
985
1479
JAN-JUL
852
859
62
916
1388
OCT-SEP
1119
1130
69
1189
1636
Reference
ESP with 0 Days QPF
Ensemble:
2026-05-18
Issued:
2026-05-18
Hide Forecast
APR-SEP
631
667
55
759
1212
APR-JUL
566
600
54
683
1121
JAN-SEP
920
955
65
1048
1479
JAN-JUL
854
889
64
972
1388
OCT-SEP
1124
1160
71
1252
1636
Move the mouse over the desired "Forecast Period" to display a graph.
ESP10, 190, 264, 371, 409, 465, 71, , 75
ESP10, 190, 263, 370, 408, 464, 74, , 78
ESP10, 189, 261, 370, 407, 465, 77, , 81
ESP10, 193, 265, 373, 409, 467, 80, , 84
ESP10, 194, 264, 372, 409, 466, 83, , 87
ESP10, 192, 260, 369, 408, 464, 85, , 89
ESP10, 192, 259, 368, 407, 463, 88, , 92
ESP10, 195, 262, 370, 409, 465, 91, , 95
ESP10, 195, 261, 370, 409, 465, 94, , 98
ESP10, 190, 253, 365, 403, 459, 97, , 101
ESP10, 187, 252, 364, 401, 456, 100, , 104
ESP10, 191, 268, 369, 405, 461, 103, , 107
ESP10, 190, 274, 368, 404, 460, 106, , 110
ESP10, 189, 274, 366, 413, 461, 109, , 113
ESP10, 185, 267, 359, 409, 457, 112, , 116
ESP10, 176, 253, 345, 397, 443, 114, , 118
ESP10, 168, 243, 337, 394, 437, 117, , 121
ESP10, 173, 246, 342, 396, 440, 120, , 124
ESP10, 179, 247, 342, 398, 441, 123, , 127
ESP10, 185, 252, 346, 401, 444, 126, , 130
ESP10, 176, 245, 339, 395, 438, 129, , 133
ESP10, 184, 258, 345, 401, 443, 132, , 136
ESP10, 184, 259, 347, 401, 443, 135, , 139
ESP10, 194, 270, 359, 409, 451, 138, , 142
ESP10, 193, 273, 358, 409, 450, 141, , 145
ESP10, 191, 271, 355, 406, 448, 143, , 147
ESP10, 196, 272, 356, 409, 449, 146, , 150
ESP10, 198, 278, 358, 411, 450, 149, , 153
ESP10, 193, 276, 351, 408, 445, 152, , 156
ESP10, 179, 262, 338, 398, 434, 155, , 159
ESP10, 176, 262, 338, 400, 434, 158, , 162
ESP10, 172, 258, 333, 398, 432, 161, , 165
ESP10, 181, 264, 338, 403, 442, 164, , 168
ESP10, 186, 268, 340, 406, 452, 167, , 171
ESP10, 189, 270, 341, 407, 458, 170, , 174
ESP10, 195, 273, 343, 409, 464, 172, , 176
ESP10, 192, 275, 344, 405, 462, 175, , 179
ESP10, 184, 270, 337, 398, 457, 178, , 182
ESP10, 193, 272, 338, 399, 459, 181, , 185
ESP10, 201, 276, 344, 404, 462, 184, , 188
ESP10, 217, 292, 356, 414, 473, 187, , 191
ESP10, 226, 303, 358, 415, 474, 190, , 194
ESP10, 224, 301, 361, 411, 471, 193, , 197
ESP10, 233, 305, 366, 418, 475, 196, , 200
ESP10, 237, 310, 370, 422, 478, 199, , 203
ESP10, 240, 311, 376, 423, 481, 201, , 205
ESP10, 242, 312, 380, 424, 485, 204, , 208
ESP10, 249, 320, 383, 427, 489, 207, , 211
ESP10, 254, 318, 380, 424, 488, 210, , 214
ESP10, 252, 315, 376, 423, 487, 213, , 217
ESP10, 254, 319, 375, 421, 486, 216, , 220
ESP10, 250, 316, 374, 422, 482, 219, , 223
ESP10, 261, 323, 388, 434, 492, 222, , 226
ESP10, 264, 326, 392, 438, 493, 225, , 229
ESP10, 266, 328, 392, 439, 494, 228, , 232
ESP10, 270, 330, 391, 440, 493, 230, , 234
ESP10, 265, 324, 387, 434, 488, 233, , 237
ESP10, 264, 325, 387, 438, 487, 236, , 240
ESP10, 270, 333, 392, 452, 491, 239, , 243
ESP10, 253, 320, 381, 440, 479, 242, , 246
ESP10, 248, 315, 374, 434, 472, 245, , 249
ESP10, 259, 324, 386, 439, 477, 248, , 252
ESP10, 250, 315, 380, 429, 473, 251, , 255
ESP10, 248, 312, 376, 422, 470, 254, , 258
ESP10, 251, 311, 374, 421, 472, 257, , 261
ESP10, 248, 300, 365, 411, 464, 259, , 263
ESP10, 243, 294, 358, 407, 459, 262, , 266
ESP10, 264, 312, 373, 420, 473, 265, , 269
ESP10, 269, 311, 372, 418, 471, 268, , 272
ESP10, 272, 303, 365, 413, 464, 271, , 275
ESP10, 271, 293, 358, 406, 461, 274, , 278
ESP10, 258, 280, 346, 405, 456, 277, , 281
ESP10, 244, 272, 336, 397, 448, 280, , 284
ESP10, 243, 272, 336, 402, 448, 283, , 287
ESP10, 251, 280, 345, 408, 459, 286, , 290
ESP10, 241, 269, 334, 402, 452, 288, , 292
ESP10, 236, 266, 326, 398, 446, 291, , 295
ESP10, 244, 285, 334, 405, 454, 294, , 298
ESP10, 246, 295, 336, 405, 454, 297, , 301
ESP10, 251, 297, 340, 406, 455, 300, , 304
ESP10, 255, 296, 337, 403, 450, 303, , 307
ESP10, 261, 301, 350, 410, 453, 306, , 310
ESP10, 268, 306, 355, 420, 458, 309, , 313
ESP10, 269, 304, 355, 421, 457, 312, , 316
ESP10, 265, 300, 353, 417, 453, 315, , 319
ESP10, 265, 303, 354, 416, 452, 317, , 321
ESP10, 269, 304, 360, 415, 452, 320, , 324
ESP10, 273, 308, 365, 419, 459, 323, , 327
ESP10, 271, 302, 359, 414, 456, 326, , 330
ESP10, 277, 304, 360, 414, 457, 329, , 333
ESP10, 285, 310, 363, 417, 461, 332, , 336
ESP10, 284, 313, 367, 415, 461, 335, , 339
ESP10, 284, 304, 360, 408, 455, 338, , 342
ESP10, 282, 303, 360, 407, 453, 341, , 345
ESP10, 281, 307, 357, 404, 451, 344, , 348
ESP10, 279, 313, 354, 402, 449, 346, , 350
ESP10, 279, 315, 354, 403, 449, 349, , 353
ESP10, 283, 319, 355, 407, 450, 352, , 356
ESP10, 286, 326, 363, 411, 452, 355, , 359
ESP10, 290, 329, 365, 412, 451, 358, , 362
ESP10, 293, 335, 366, 418, 451, 361, , 365
ESP10, 302, 343, 369, 418, 452, 364, , 368
ESP10, 303, 343, 371, 421, 452, 367, , 371
ESP10, 304, 342, 372, 420, 451, 370, , 374
ESP10, 311, 346, 380, 428, 454, 373, , 377
ESP10, 314, 346, 380, 428, 454, 375, , 379
ESP10, 311, 342, 379, 425, 451, 378, , 382
ESP10, 319, 347, 384, 431, 455, 381, , 385
ESP10, 326, 347, 385, 432, 458, 384, , 388
ESP10, 327, 351, 387, 433, 462, 387, , 391
ESP10, 325, 355, 385, 436, 461, 390, , 394
ESP10, 329, 358, 387, 438, 463, 393, , 397
ESP10, 330, 359, 388, 440, 463, 396, , 400
ESP10, 331, 360, 390, 441, 463, 399, , 403
ESP10, 331, 363, 391, 442, 463, 402, , 406
ESP10, 331, 365, 392, 443, 464, 404, , 408
ESP10, 332, 365, 394, 445, 464, 407, , 411
ESP10, 334, 365, 395, 444, 463, 410, , 414
ESP10, 334, 370, 399, 445, 463, 413, , 417
ESP10, 339, 373, 402, 448, 464, 416, , 420
ESP10, 342, 374, 405, 450, 465, 419, , 423
ESP10, 340, 372, 402, 448, 463, 422, , 426
ESP10, 341, 374, 403, 450, 465, 425, , 429
ESP10, 337, 369, 397, 445, 460, 428, , 432
ESP10, 338, 368, 399, 443, 460, 431, , 435
ESP10, 343, 372, 403, 446, 464, 433, , 437
ESP10, 349, 383, 415, 451, 469, 436, , 440
ESP10, 351, 381, 412, 447, 466, 439, , 443
ESP10, 350, 380, 418, 444, 463, 442, , 446
ESP10, 352, 377, 415, 441, 463, 445, , 449
ESP10, 352, 377, 414, 441, 460, 448, , 452
ESP10, 353, 377, 412, 442, 462, 451, , 455
ESP10, 357, 380, 417, 445, 464, 454, , 458
ESP10, 361, 387, 418, 446, 467, 457, , 461
ESP10, 366, 392, 422, 450, 474, 460, , 464
ESP10, 365, 391, 421, 454, 474, 462, , 466
ESP10, 358, 383, 412, 449, 472, 465, , 469
ESP10, 359, 385, 413, 448, 473, 468, , 472
ESP10, 346, 370, 405, 437, 462, 471, , 475
ESP10, 362, 387, 419, 450, 477, 474, , 478
ESP10, 365, 389, 420, 451, 476, 477, , 481
ESP10, 371, 391, 423, 453, 476, 480, , 484
ESP10, 379, 400, 429, 460, 483, 483, , 487
ESP10, 376, 396, 425, 456, 480, 486, , 490
ESP10, 376, 396, 430, 455, 478, 489, , 493
ESP10, 376, 396, 428, 454, 477, 491, , 495
ESP10, 382, 402, 434, 461, 482, 494, , 498
ESP10, 375, 397, 431, 454, 476, 497, , 501
ESP10, 370, 394, 428, 451, 472, 500, , 504
ESP10, 369, 393, 428, 452, 471, 503, , 507
ESP10, 381, 399, 435, 460, 475, 506, , 510
ESP10, 384, 402, 437, 462, 476, 509, , 513
ESP10, 385, 401, 439, 460, 476, 512, , 516
ESP10, 384, 401, 433, 460, 470, 515, , 519
ESP10, 393, 409, 438, 464, 475, 518, , 522
ESP10, 393, 412, 438, 463, 475, 520, , 524
ESP10, 395, 412, 437, 464, 474, 523, , 527
ESP10, 393, 410, 439, 462, 474, 526, , 530
ESP10, 396, 414, 439, 464, 476, 529, , 533
ESP10, 405, 422, 448, 473, 483, 532, , 536
ESP10, 403, 420, 446, 471, 485, 535, , 539
ESP10, 394, 412, 439, 463, 477, 538, , 542
ESP10, 409, 428, 451, 476, 489, 541, , 545
ESP10, 411, 430, 453, 478, 491, 544, , 548
ESP10, 412, 430, 455, 479, 490, 547, , 551
ESP10, 414, 431, 460, 480, 489, 549, , 553
ESP10, 412, 427, 457, 477, 485, 552, , 556
ESP10, 418, 432, 460, 480, 490, 555, , 559
ESP10, 431, 439, 466, 486, 495, 558, , 562
ESP10, 432, 443, 466, 488, 495, 561, , 565
ESP10, 432, 446, 469, 488, 495, 564, , 568
ESP10, 435, 454, 471, 491, 498, 567, , 571
ESP10, 432, 454, 472, 491, 496, 570, , 574
ESP10, 419, 444, 461, 479, 485, 573, , 577
ESP10, 415, 441, 460, 475, 482, 576, , 580
ESP10, 423, 446, 464, 478, 484, 578, , 582
ESP10, 419, 441, 461, 474, 484, 581, , 585
ESP10, 423, 442, 462, 474, 484, 584, , 588
ESP10, 426, 445, 468, 477, 488, 587, , 591
ESP10, 425, 449, 467, 477, 488, 590, , 594
ESP10, 424, 449, 468, 478, 487, 593, , 597
ESP10, 426, 449, 470, 478, 487, 596, , 600
ESP10, 429, 448, 469, 479, 486, 599, , 603
ESP10, 438, 454, 474, 486, 492, 602, , 606
ESP10, 436, 451, 470, 484, 491, 605, , 609
ESP10, 435, 452, 471, 484, 492, 607, , 611
ESP10, 435, 451, 469, 483, 490, 610, , 614
ESP10, 439, 458, 475, 486, 493, 613, , 617
ESP10, 432, 449, 466, 479, 487, 616, , 620
ESP10, 440, 456, 473, 486, 493, 619, , 623
ESP10, 441, 459, 472, 485, 492, 622, , 626
ESP10, 432, 453, 468, 477, 484, 625, , 629
ESP10, 430, 451, 467, 476, 484, 628, , 632
ESP10, 424, 442, 457, 467, 476, 631, , 635
ESP10, 429, 449, 461, 469, 477, 634, , 638
ESP10, 428, 452, 463, 469, 478, 636, , 640
ESP10, 427, 452, 461, 469, 478, 639, , 643
ESP10, 426, 451, 463, 469, 477, 642, , 646
ESP10, 427, 447, 459, 466, 474, 645, , 649
ESP10, 425, 447, 458, 465, 473, 648, , 652
ESP10, 424, 446, 456, 463, 471, 651, , 655
ESP10, 424, 447, 458, 465, 472, 654, , 658
ESP10, 436, 452, 464, 469, 476, 657, , 661
ESP10, 444, 457, 469, 475, 480, 660, , 664
ESP10, 444, 459, 470, 477, 481, 663, , 667
ESP10, 446, 460, 470, 479, 483, 665, , 669
ESP10, 446, 461, 469, 477, 481, 668, , 672
ESP10, 443, 460, 467, 475, 479, 671, , 675
ESP10, 450, 464, 470, 478, 481, 674, , 678
ESP10, 450, 464, 471, 479, 481, 677, , 681
ESP10, 449, 464, 470, 478, 480, 680, , 684
ESP10, 450, 464, 470, 479, 482, 683, , 687
ESP10, 450, 464, 471, 479, 482, 686, , 690
ESP10, 450, 465, 471, 479, 483, 689, , 693
ESP10, 452, 466, 472, 479, 483, 692, , 696
ESP10, 453, 466, 471, 478, 482, 694, , 698
ESP10, 454, 467, 472, 478, 481, 697, , 701
ESP10, 447, 461, 467, 472, 476, 700, , 704
ESP10, 448, 461, 467, 472, 474, 703, , 707
ESP10, 443, 457, 463, 469, 471, 706, , 710
ESP10, 445, 459, 464, 471, 472, 709, , 713
ESP10, 444, 457, 462, 469, 470, 712, , 716
ESP10, 450, 459, 465, 471, 472, 715, , 719
ESP10, 453, 460, 466, 471, 472, 718, , 722
ESP10, 453, 460, 465, 469, 471, 721, , 725
ESP10, 452, 460, 465, 468, 470, 723, , 727
ESP10, 452, 460, 464, 467, 468, 726, , 730
ESP10, 453, 461, 465, 466, 467, 729, , 733
ESP10, 452, 459, 464, 465, 466, 732, , 736
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ESP10
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ESP0
Data Files
/chpsesp/ensemble/natural/ARKI1N_SQIN.ESPF10.csv
ARKI1N_SQIN.ESPF0.csv|2026-05-18
ARKI1N_SQIN.ESPF10.csv|2026-05-18
ARKI1N_SQIN.ESPFM.csv|2026-05-18
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ESP10,ESPM,ESP0
ESP10,ESPM,ESP0
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