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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:
2026-05-19
Issued:
2026-05-19
Hide Forecast
Forecast
Period
Forecasts Are in KAF
30 Year
Average
(1991-2020)
90 %
50 %
%
Average
10 %
APR-SEP
626
638
53
701
1212
APR-JUL
564
572
51
632
1121
JAN-SEP
915
927
63
990
1479
JAN-JUL
852
860
62
921
1388
OCT-SEP
1119
1131
69
1194
1636
Experimental
HEFS with 15 days EQPF
Ensemble:
2026-05-19
Issued:
2026-05-19
Hide Forecast
APR-SEP
627
639
53
697
1212
APR-JUL
564
573
51
628
1121
JAN-SEP
916
928
63
985
1479
JAN-JUL
853
862
62
916
1388
OCT-SEP
1120
1132
69
1190
1636
Reference
ESP with 0 Days QPF
Ensemble:
2026-05-19
Issued:
2026-05-19
Hide Forecast
APR-SEP
631
662
55
757
1212
APR-JUL
566
598
53
681
1121
JAN-SEP
920
951
64
1045
1479
JAN-JUL
854
886
64
969
1388
OCT-SEP
1124
1155
71
1250
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, 82, , 86
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, 108, , 112
ESP10, 185, 267, 359, 409, 457, 111, , 115
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, 134, , 138
ESP10, 194, 270, 359, 409, 451, 137, , 141
ESP10, 193, 273, 358, 409, 450, 140, , 144
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, 160, , 164
ESP10, 181, 264, 338, 403, 442, 163, , 167
ESP10, 186, 268, 340, 406, 452, 166, , 170
ESP10, 189, 270, 341, 407, 458, 169, , 173
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, 186, , 190
ESP10, 226, 303, 358, 415, 474, 189, , 193
ESP10, 224, 301, 361, 411, 471, 192, , 196
ESP10, 233, 305, 366, 418, 475, 195, , 199
ESP10, 237, 310, 370, 422, 478, 198, , 202
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, 212, , 216
ESP10, 254, 319, 375, 421, 486, 215, , 219
ESP10, 250, 316, 374, 422, 482, 218, , 222
ESP10, 261, 323, 388, 434, 492, 221, , 225
ESP10, 264, 326, 392, 438, 493, 224, , 228
ESP10, 266, 328, 392, 439, 494, 227, , 231
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, 238, , 242
ESP10, 253, 320, 381, 440, 479, 241, , 245
ESP10, 248, 315, 374, 434, 472, 244, , 248
ESP10, 259, 324, 386, 439, 477, 247, , 251
ESP10, 250, 315, 380, 429, 473, 250, , 254
ESP10, 248, 312, 376, 422, 470, 253, , 257
ESP10, 251, 311, 374, 421, 472, 256, , 260
ESP10, 248, 300, 365, 411, 464, 259, , 263
ESP10, 243, 294, 358, 407, 459, 261, , 265
ESP10, 264, 312, 373, 420, 473, 264, , 268
ESP10, 269, 311, 372, 418, 471, 267, , 271
ESP10, 272, 303, 365, 413, 464, 270, , 274
ESP10, 271, 293, 358, 406, 461, 273, , 277
ESP10, 258, 280, 346, 405, 456, 276, , 280
ESP10, 244, 272, 336, 397, 448, 279, , 283
ESP10, 243, 272, 336, 402, 448, 282, , 286
ESP10, 251, 280, 345, 408, 459, 285, , 289
ESP10, 241, 269, 334, 402, 452, 287, , 291
ESP10, 236, 266, 326, 398, 446, 290, , 294
ESP10, 244, 285, 334, 405, 454, 293, , 297
ESP10, 246, 295, 336, 405, 454, 296, , 300
ESP10, 251, 297, 340, 406, 455, 299, , 303
ESP10, 255, 296, 337, 403, 450, 302, , 306
ESP10, 261, 301, 350, 410, 453, 305, , 309
ESP10, 268, 306, 355, 420, 458, 308, , 312
ESP10, 269, 304, 355, 421, 457, 311, , 315
ESP10, 265, 300, 353, 417, 453, 313, , 317
ESP10, 265, 303, 354, 416, 452, 316, , 320
ESP10, 269, 304, 360, 415, 452, 319, , 323
ESP10, 273, 308, 365, 419, 459, 322, , 326
ESP10, 271, 302, 359, 414, 456, 325, , 329
ESP10, 277, 304, 360, 414, 457, 328, , 332
ESP10, 285, 310, 363, 417, 461, 331, , 335
ESP10, 284, 313, 367, 415, 461, 334, , 338
ESP10, 284, 304, 360, 408, 455, 337, , 341
ESP10, 282, 303, 360, 407, 453, 339, , 343
ESP10, 281, 307, 357, 404, 451, 342, , 346
ESP10, 279, 313, 354, 402, 449, 345, , 349
ESP10, 279, 315, 354, 403, 449, 348, , 352
ESP10, 283, 319, 355, 407, 450, 351, , 355
ESP10, 286, 326, 363, 411, 452, 354, , 358
ESP10, 290, 329, 365, 412, 451, 357, , 361
ESP10, 293, 335, 366, 418, 451, 360, , 364
ESP10, 302, 343, 369, 418, 452, 363, , 367
ESP10, 303, 343, 371, 421, 452, 365, , 369
ESP10, 304, 342, 372, 420, 451, 368, , 372
ESP10, 311, 346, 380, 428, 454, 371, , 375
ESP10, 314, 346, 380, 428, 454, 374, , 378
ESP10, 311, 342, 379, 425, 451, 377, , 381
ESP10, 319, 347, 384, 431, 455, 380, , 384
ESP10, 326, 347, 385, 432, 458, 383, , 387
ESP10, 327, 351, 387, 433, 462, 386, , 390
ESP10, 325, 355, 385, 436, 461, 389, , 393
ESP10, 329, 358, 387, 438, 463, 391, , 395
ESP10, 330, 359, 388, 440, 463, 394, , 398
ESP10, 331, 360, 390, 441, 463, 397, , 401
ESP10, 331, 363, 391, 442, 463, 400, , 404
ESP10, 331, 365, 392, 443, 464, 403, , 407
ESP10, 332, 365, 394, 445, 464, 406, , 410
ESP10, 334, 365, 395, 444, 463, 409, , 413
ESP10, 334, 370, 399, 445, 463, 412, , 416
ESP10, 339, 373, 402, 448, 464, 415, , 419
ESP10, 342, 374, 405, 450, 465, 417, , 421
ESP10, 340, 372, 402, 448, 463, 420, , 424
ESP10, 341, 374, 403, 450, 465, 423, , 427
ESP10, 337, 369, 397, 445, 460, 426, , 430
ESP10, 338, 368, 399, 443, 460, 429, , 433
ESP10, 343, 372, 403, 446, 464, 432, , 436
ESP10, 349, 383, 415, 451, 469, 435, , 439
ESP10, 351, 381, 412, 447, 466, 438, , 442
ESP10, 350, 380, 418, 444, 463, 441, , 445
ESP10, 352, 377, 415, 441, 463, 443, , 447
ESP10, 352, 377, 414, 441, 460, 446, , 450
ESP10, 353, 377, 412, 442, 462, 449, , 453
ESP10, 357, 380, 417, 445, 464, 452, , 456
ESP10, 361, 387, 418, 446, 467, 455, , 459
ESP10, 366, 392, 422, 450, 474, 458, , 462
ESP10, 365, 391, 421, 454, 474, 461, , 465
ESP10, 358, 383, 412, 449, 472, 464, , 468
ESP10, 359, 385, 413, 448, 473, 467, , 471
ESP10, 346, 370, 405, 437, 462, 469, , 473
ESP10, 362, 387, 419, 450, 477, 472, , 476
ESP10, 365, 389, 420, 451, 476, 475, , 479
ESP10, 371, 391, 423, 453, 476, 478, , 482
ESP10, 379, 400, 429, 460, 483, 481, , 485
ESP10, 376, 396, 425, 456, 480, 484, , 488
ESP10, 376, 396, 430, 455, 478, 487, , 491
ESP10, 376, 396, 428, 454, 477, 490, , 494
ESP10, 382, 402, 434, 461, 482, 493, , 497
ESP10, 375, 397, 431, 454, 476, 495, , 499
ESP10, 370, 394, 428, 451, 472, 498, , 502
ESP10, 369, 393, 428, 452, 471, 501, , 505
ESP10, 381, 399, 435, 460, 475, 504, , 508
ESP10, 384, 402, 437, 462, 476, 507, , 511
ESP10, 385, 401, 439, 460, 476, 510, , 514
ESP10, 384, 401, 433, 460, 470, 513, , 517
ESP10, 393, 409, 438, 464, 475, 516, , 520
ESP10, 393, 412, 438, 463, 475, 519, , 523
ESP10, 395, 412, 437, 464, 474, 521, , 525
ESP10, 393, 410, 439, 462, 474, 524, , 528
ESP10, 396, 414, 439, 464, 476, 527, , 531
ESP10, 405, 422, 448, 473, 483, 530, , 534
ESP10, 403, 420, 446, 471, 485, 533, , 537
ESP10, 394, 412, 439, 463, 477, 536, , 540
ESP10, 409, 428, 451, 476, 489, 539, , 543
ESP10, 411, 430, 453, 478, 491, 542, , 546
ESP10, 412, 430, 455, 479, 490, 545, , 549
ESP10, 414, 431, 460, 480, 489, 547, , 551
ESP10, 412, 427, 457, 477, 485, 550, , 554
ESP10, 418, 432, 460, 480, 490, 553, , 557
ESP10, 431, 439, 466, 486, 495, 556, , 560
ESP10, 432, 443, 466, 488, 495, 559, , 563
ESP10, 432, 446, 469, 488, 495, 562, , 566
ESP10, 435, 454, 471, 491, 498, 565, , 569
ESP10, 432, 454, 472, 491, 496, 568, , 572
ESP10, 419, 444, 461, 479, 485, 571, , 575
ESP10, 415, 441, 460, 475, 482, 573, , 577
ESP10, 423, 446, 464, 478, 484, 576, , 580
ESP10, 419, 441, 461, 474, 484, 579, , 583
ESP10, 423, 442, 462, 474, 484, 582, , 586
ESP10, 426, 445, 468, 477, 488, 585, , 589
ESP10, 425, 449, 467, 477, 488, 588, , 592
ESP10, 424, 449, 468, 478, 487, 591, , 595
ESP10, 426, 449, 470, 478, 487, 594, , 598
ESP10, 429, 448, 469, 479, 486, 596, , 600
ESP10, 438, 454, 474, 486, 492, 599, , 603
ESP10, 436, 451, 470, 484, 491, 602, , 606
ESP10, 435, 452, 471, 484, 492, 605, , 609
ESP10, 435, 451, 469, 483, 490, 608, , 612
ESP10, 439, 458, 475, 486, 493, 611, , 615
ESP10, 432, 449, 466, 479, 487, 614, , 618
ESP10, 440, 456, 473, 486, 493, 617, , 621
ESP10, 441, 459, 472, 485, 492, 620, , 624
ESP10, 432, 453, 468, 477, 484, 622, , 626
ESP10, 430, 451, 467, 476, 484, 625, , 629
ESP10, 424, 442, 457, 467, 476, 628, , 632
ESP10, 429, 449, 461, 469, 477, 631, , 635
ESP10, 428, 452, 463, 469, 478, 634, , 638
ESP10, 427, 452, 461, 469, 478, 637, , 641
ESP10, 426, 451, 463, 469, 477, 640, , 644
ESP10, 427, 447, 459, 466, 474, 643, , 647
ESP10, 425, 447, 458, 465, 473, 646, , 650
ESP10, 424, 446, 456, 463, 471, 648, , 652
ESP10, 424, 447, 458, 465, 472, 651, , 655
ESP10, 436, 452, 464, 469, 476, 654, , 658
ESP10, 444, 457, 469, 475, 480, 657, , 661
ESP10, 444, 459, 470, 477, 481, 660, , 664
ESP10, 446, 460, 470, 479, 483, 663, , 667
ESP10, 446, 461, 469, 477, 481, 666, , 670
ESP10, 443, 460, 467, 475, 479, 669, , 673
ESP10, 450, 464, 470, 478, 481, 672, , 676
ESP10, 450, 464, 471, 479, 481, 674, , 678
ESP10, 449, 464, 470, 478, 480, 677, , 681
ESP10, 450, 464, 470, 479, 482, 680, , 684
ESP10, 450, 464, 471, 479, 482, 683, , 687
ESP10, 450, 465, 471, 479, 483, 686, , 690
ESP10, 452, 466, 472, 479, 483, 689, , 693
ESP10, 453, 466, 471, 478, 482, 692, , 696
ESP10, 454, 467, 472, 478, 481, 695, , 699
ESP10, 447, 461, 467, 472, 476, 698, , 702
ESP10, 448, 461, 467, 472, 474, 700, , 704
ESP10, 443, 457, 463, 469, 471, 703, , 707
ESP10, 445, 459, 464, 471, 472, 706, , 710
ESP10, 444, 457, 462, 469, 470, 709, , 713
ESP10, 450, 459, 465, 471, 472, 712, , 716
ESP10, 453, 460, 466, 471, 472, 715, , 719
ESP10, 453, 460, 465, 469, 471, 718, , 722
ESP10, 452, 460, 465, 468, 470, 721, , 725
ESP10, 452, 460, 464, 467, 468, 724, , 728
ESP10, 453, 461, 465, 466, 467, 726, , 730
ESP10, 452, 459, 464, 465, 466, 729, , 733
ESP10, 452, 460, 464, 465, 466, 732, , 736
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ESP10
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Data Files
/chpsesp/ensemble/natural/ARKI1N_SQIN.ESPF10.csv
ARKI1N_SQIN.ESPF0.csv|2026-05-19
ARKI1N_SQIN.ESPF10.csv|2026-05-19
ARKI1N_SQIN.ESPFM.csv|2026-05-19
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ESP10,ESPM,ESP0
ESP10,ESPM,ESP0
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