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Water Year
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SF BOISE - ANDERSON RANCH DAM
(
ARAI1
)
Forecasts for Water Year
2026
Official Water Supply
ESP with 10 Days QPF
Ensemble:
2026-07-06
Issued:
2026-07-06
Hide Forecast
Forecast
Period
Forecasts Are in KAF
30 Year
Average
(1991-2020)
90 %
50 %
%
Average
10 %
APR-SEP
301
302
61
306
495
APR-JUL
273
274
59
274
462
JAN-SEP
413
415
71
419
583
JAN-JUL
386
386
70
387
550
OCT-SEP
495
497
78
501
637
Experimental Water Supply
HEFS with 15 days EQPF
Ensemble:
2026-07-06
Issued:
2026-07-06
Hide Forecast
APR-SEP
301
303
61
306
495
APR-JUL
273
274
59
274
462
JAN-SEP
413
415
71
419
583
JAN-JUL
386
386
70
387
550
OCT-SEP
495
497
78
501
637
Reference
ESP with 0 Days QPF
Ensemble:
2026-07-06
Issued:
2026-07-06
Hide Forecast
APR-SEP
301
303
61
307
495
APR-JUL
273
274
59
275
462
JAN-SEP
413
415
71
419
583
JAN-JUL
386
386
70
387
550
OCT-SEP
495
497
78
501
637
Move the mouse over the desired "Forecast Period" to display a graph.
ESP10, 183, 262, 374, 415, 475, 70, , 74
ESP10, 182, 260, 372, 413, 474, 73, , 77
ESP10, 182, 259, 371, 412, 473, 75, , 79
ESP10, 186, 262, 374, 415, 476, 78, , 82
ESP10, 188, 261, 373, 414, 476, 80, , 84
ESP10, 186, 257, 369, 411, 473, 82, , 86
ESP10, 185, 255, 367, 409, 472, 85, , 89
ESP10, 189, 258, 370, 412, 474, 87, , 91
ESP10, 188, 257, 370, 411, 474, 90, , 94
ESP10, 181, 250, 363, 405, 468, 92, , 96
ESP10, 178, 249, 361, 402, 466, 94, , 98
ESP10, 183, 260, 366, 407, 470, 97, , 101
ESP10, 180, 262, 363, 405, 469, 99, , 103
ESP10, 177, 261, 360, 402, 467, 102, , 106
ESP10, 170, 253, 352, 395, 461, 104, , 108
ESP10, 159, 236, 337, 383, 447, 106, , 110
ESP10, 149, 227, 330, 376, 438, 109, , 113
ESP10, 155, 230, 336, 383, 441, 111, , 115
ESP10, 160, 230, 336, 383, 441, 113, , 117
ESP10, 167, 242, 341, 388, 446, 116, , 120
ESP10, 160, 237, 333, 381, 438, 118, , 122
ESP10, 169, 247, 340, 387, 444, 121, , 125
ESP10, 168, 247, 340, 387, 443, 123, , 127
ESP10, 178, 257, 354, 396, 452, 125, , 129
ESP10, 177, 260, 353, 395, 450, 128, , 132
ESP10, 176, 258, 351, 394, 447, 130, , 134
ESP10, 184, 263, 353, 396, 447, 133, , 137
ESP10, 187, 266, 354, 401, 450, 135, , 139
ESP10, 181, 263, 349, 398, 444, 137, , 141
ESP10, 168, 250, 334, 389, 432, 140, , 144
ESP10, 166, 253, 333, 392, 435, 142, , 146
ESP10, 162, 252, 328, 391, 432, 145, , 149
ESP10, 172, 263, 334, 398, 445, 147, , 151
ESP10, 177, 265, 335, 408, 457, 149, , 153
ESP10, 177, 265, 335, 409, 457, 152, , 156
ESP10, 178, 263, 336, 408, 458, 154, , 158
ESP10, 174, 258, 335, 406, 459, 157, , 161
ESP10, 168, 249, 326, 398, 453, 159, , 163
ESP10, 173, 249, 326, 398, 454, 161, , 165
ESP10, 181, 252, 334, 403, 458, 164, , 168
ESP10, 198, 268, 347, 414, 470, 166, , 170
ESP10, 217, 287, 358, 426, 477, 169, , 173
ESP10, 215, 291, 362, 424, 474, 171, , 175
ESP10, 222, 295, 369, 428, 478, 173, , 177
ESP10, 228, 301, 374, 433, 481, 176, , 180
ESP10, 230, 303, 380, 434, 485, 178, , 182
ESP10, 232, 308, 384, 435, 489, 180, , 184
ESP10, 237, 311, 386, 437, 492, 183, , 187
ESP10, 238, 307, 383, 434, 490, 185, , 189
ESP10, 237, 306, 379, 431, 488, 188, , 192
ESP10, 237, 310, 378, 430, 488, 190, , 194
ESP10, 234, 307, 374, 427, 484, 192, , 196
ESP10, 243, 313, 385, 434, 492, 195, , 199
ESP10, 245, 315, 388, 436, 494, 197, , 201
ESP10, 246, 321, 387, 435, 495, 200, , 204
ESP10, 251, 319, 387, 439, 495, 202, , 206
ESP10, 246, 312, 384, 434, 490, 204, , 208
ESP10, 246, 312, 386, 434, 490, 207, , 211
ESP10, 253, 321, 392, 441, 494, 209, , 213
ESP10, 238, 308, 380, 427, 483, 212, , 216
ESP10, 235, 308, 378, 426, 478, 214, , 218
ESP10, 241, 316, 387, 431, 481, 216, , 220
ESP10, 233, 308, 377, 423, 476, 219, , 223
ESP10, 234, 305, 373, 425, 474, 221, , 225
ESP10, 238, 301, 375, 430, 476, 224, , 228
ESP10, 234, 290, 369, 423, 467, 226, , 230
ESP10, 228, 285, 363, 421, 467, 228, , 232
ESP10, 250, 308, 381, 438, 482, 231, , 235
ESP10, 253, 305, 378, 435, 479, 233, , 237
ESP10, 254, 296, 372, 430, 471, 236, , 240
ESP10, 253, 294, 365, 421, 468, 238, , 242
ESP10, 243, 282, 352, 412, 463, 240, , 244
ESP10, 229, 267, 339, 404, 455, 243, , 247
ESP10, 227, 269, 338, 409, 454, 245, , 249
ESP10, 234, 275, 344, 414, 464, 247, , 251
ESP10, 230, 262, 333, 404, 458, 250, , 254
ESP10, 224, 257, 326, 397, 452, 252, , 256
ESP10, 233, 273, 335, 406, 459, 255, , 259
ESP10, 231, 283, 334, 405, 458, 257, , 261
ESP10, 238, 291, 337, 406, 459, 259, , 263
ESP10, 241, 292, 335, 403, 454, 262, , 266
ESP10, 245, 289, 346, 405, 454, 264, , 268
ESP10, 244, 287, 344, 407, 451, 267, , 271
ESP10, 244, 284, 342, 406, 449, 269, , 273
ESP10, 238, 277, 336, 400, 443, 271, , 275
ESP10, 241, 274, 337, 398, 444, 274, , 278
ESP10, 246, 275, 338, 396, 449, 276, , 280
ESP10, 253, 280, 344, 401, 455, 279, , 283
ESP10, 247, 273, 339, 396, 451, 281, , 285
ESP10, 248, 276, 342, 395, 451, 283, , 287
ESP10, 246, 274, 340, 391, 449, 286, , 290
ESP10, 258, 274, 342, 390, 448, 288, , 292
ESP10, 254, 266, 334, 383, 443, 291, , 295
ESP10, 253, 272, 335, 382, 443, 293, , 297
ESP10, 250, 275, 335, 379, 441, 295, , 299
ESP10, 245, 280, 330, 377, 437, 298, , 302
ESP10, 245, 285, 330, 379, 437, 300, , 304
ESP10, 249, 287, 333, 382, 438, 303, , 307
ESP10, 255, 294, 341, 390, 440, 305, , 309
ESP10, 262, 294, 343, 392, 440, 307, , 311
ESP10, 266, 312, 343, 398, 440, 310, , 314
ESP10, 271, 317, 343, 398, 440, 312, , 316
ESP10, 274, 317, 342, 401, 440, 314, , 318
ESP10, 275, 317, 344, 401, 439, 317, , 321
ESP10, 282, 321, 350, 404, 441, 319, , 323
ESP10, 282, 321, 350, 406, 442, 322, , 326
ESP10, 280, 318, 347, 405, 439, 324, , 328
ESP10, 287, 325, 353, 411, 444, 326, , 330
ESP10, 287, 325, 355, 411, 445, 329, , 333
ESP10, 289, 326, 359, 414, 450, 331, , 335
ESP10, 287, 327, 358, 413, 449, 334, , 338
ESP10, 291, 330, 364, 415, 451, 336, , 340
ESP10, 292, 334, 367, 417, 451, 338, , 342
ESP10, 293, 335, 368, 418, 451, 341, , 345
ESP10, 293, 340, 369, 419, 451, 343, , 347
ESP10, 297, 341, 370, 420, 452, 346, , 350
ESP10, 298, 341, 371, 422, 452, 348, , 352
ESP10, 298, 342, 371, 424, 451, 350, , 354
ESP10, 299, 345, 374, 425, 452, 353, , 357
ESP10, 300, 345, 377, 428, 452, 355, , 359
ESP10, 300, 345, 383, 432, 453, 358, , 362
ESP10, 300, 346, 380, 429, 450, 360, , 364
ESP10, 302, 347, 381, 431, 451, 362, , 366
ESP10, 297, 340, 377, 425, 447, 365, , 369
ESP10, 299, 340, 376, 422, 446, 367, , 371
ESP10, 311, 346, 379, 426, 450, 370, , 374
ESP10, 313, 349, 383, 426, 450, 372, , 376
ESP10, 310, 343, 379, 421, 447, 374, , 378
ESP10, 308, 340, 385, 417, 445, 377, , 381
ESP10, 312, 340, 382, 418, 445, 379, , 383
ESP10, 318, 344, 389, 421, 446, 381, , 385
ESP10, 323, 351, 390, 421, 446, 384, , 388
ESP10, 327, 356, 395, 427, 451, 386, , 390
ESP10, 330, 362, 397, 431, 455, 389, , 393
ESP10, 332, 365, 400, 435, 459, 391, , 395
ESP10, 330, 365, 397, 435, 459, 393, , 397
ESP10, 320, 358, 388, 428, 456, 396, , 400
ESP10, 322, 359, 388, 427, 456, 398, , 402
ESP10, 316, 344, 376, 416, 445, 401, , 405
ESP10, 334, 359, 391, 430, 461, 403, , 407
ESP10, 335, 359, 390, 430, 460, 405, , 409
ESP10, 342, 360, 396, 430, 460, 408, , 412
ESP10, 352, 371, 404, 439, 467, 410, , 414
ESP10, 349, 369, 401, 436, 463, 413, , 417
ESP10, 348, 370, 407, 436, 463, 415, , 419
ESP10, 345, 368, 409, 439, 462, 417, , 421
ESP10, 352, 376, 417, 447, 470, 420, , 424
ESP10, 346, 370, 412, 442, 463, 422, , 426
ESP10, 341, 366, 411, 438, 458, 425, , 429
ESP10, 339, 366, 411, 441, 456, 427, , 431
ESP10, 348, 373, 417, 449, 461, 429, , 433
ESP10, 351, 378, 418, 450, 461, 432, , 436
ESP10, 351, 378, 418, 449, 461, 434, , 438
ESP10, 354, 378, 412, 447, 456, 437, , 441
ESP10, 360, 381, 414, 448, 458, 439, , 443
ESP10, 362, 383, 414, 447, 457, 441, , 445
ESP10, 365, 384, 414, 447, 457, 444, , 448
ESP10, 365, 382, 418, 447, 459, 446, , 450
ESP10, 369, 387, 419, 449, 462, 448, , 452
ESP10, 379, 396, 426, 457, 470, 451, , 455
ESP10, 382, 397, 426, 456, 472, 453, , 457
ESP10, 373, 387, 417, 447, 462, 456, , 460
ESP10, 386, 402, 433, 461, 477, 458, , 462
ESP10, 388, 407, 433, 463, 478, 460, , 464
ESP10, 390, 406, 431, 463, 476, 463, , 467
ESP10, 393, 410, 437, 461, 475, 465, , 469
ESP10, 390, 407, 437, 460, 472, 468, , 472
ESP10, 396, 412, 443, 466, 476, 470, , 474
ESP10, 411, 422, 456, 476, 484, 472, , 476
ESP10, 415, 424, 456, 479, 486, 475, , 479
ESP10, 417, 428, 459, 480, 486, 477, , 481
ESP10, 417, 430, 457, 479, 485, 480, , 484
ESP10, 416, 433, 456, 477, 483, 482, , 486
ESP10, 402, 421, 445, 464, 470, 484, , 488
ESP10, 399, 419, 443, 462, 468, 487, , 491
ESP10, 401, 422, 445, 462, 471, 489, , 493
ESP10, 396, 418, 443, 457, 468, 492, , 496
ESP10, 402, 418, 445, 457, 470, 494, , 498
ESP10, 407, 421, 451, 460, 474, 496, , 500
ESP10, 406, 426, 451, 459, 473, 499, , 503
ESP10, 405, 427, 450, 462, 472, 501, , 505
ESP10, 414, 436, 460, 469, 479, 504, , 508
ESP10, 413, 432, 455, 469, 475, 506, , 510
ESP10, 422, 442, 464, 478, 485, 508, , 512
ESP10, 419, 440, 462, 476, 483, 511, , 515
ESP10, 417, 441, 461, 475, 483, 513, , 517
ESP10, 416, 442, 460, 474, 482, 515, , 519
ESP10, 422, 448, 466, 478, 484, 518, , 522
ESP10, 411, 435, 452, 466, 475, 520, , 524
ESP10, 437, 458, 475, 487, 495, 523, , 527
ESP10, 437, 459, 474, 487, 493, 525, , 529
ESP10, 427, 453, 467, 479, 485, 527, , 531
ESP10, 426, 453, 466, 478, 486, 530, , 534
ESP10, 419, 443, 457, 469, 477, 532, , 536
ESP10, 426, 451, 463, 473, 481, 535, , 539
ESP10, 426, 454, 463, 475, 482, 537, , 541
ESP10, 426, 454, 465, 473, 482, 539, , 543
ESP10, 432, 461, 471, 479, 488, 542, , 546
ESP10, 432, 457, 468, 477, 485, 544, , 548
ESP10, 430, 457, 468, 476, 484, 547, , 551
ESP10, 431, 455, 465, 473, 481, 549, , 553
ESP10, 432, 455, 468, 473, 481, 551, , 555
ESP10, 445, 460, 473, 478, 486, 554, , 558
ESP10, 452, 466, 478, 483, 491, 556, , 560
ESP10, 451, 468, 479, 485, 491, 559, , 563
ESP10, 453, 469, 480, 488, 493, 561, , 565
ESP10, 451, 470, 479, 487, 491, 563, , 567
ESP10, 448, 468, 476, 485, 488, 566, , 570
ESP10, 454, 473, 480, 488, 491, 568, , 572
ESP10, 455, 473, 479, 487, 490, 571, , 575
ESP10, 454, 472, 478, 487, 490, 573, , 577
ESP10, 455, 473, 481, 488, 492, 575, , 579
ESP10, 454, 473, 481, 488, 492, 578, , 582
ESP10, 455, 473, 482, 489, 492, 580, , 584
ESP10, 456, 473, 483, 490, 493, 582, , 586
ESP10, 457, 473, 482, 488, 491, 585, , 589
ESP10, 458, 473, 481, 487, 490, 587, , 591
ESP10, 441, 458, 466, 473, 475, 590, , 594
ESP10, 442, 459, 465, 470, 473, 592, , 596
ESP10, 430, 446, 454, 461, 464, 594, , 598
ESP10, 434, 451, 458, 465, 467, 597, , 601
ESP10, 436, 451, 458, 465, 467, 599, , 603
ESP10, 442, 454, 461, 467, 470, 602, , 606
ESP10, 444, 455, 461, 467, 469, 604, , 608
ESP10, 445, 456, 462, 467, 469, 606, , 610
ESP10, 443, 454, 460, 465, 467, 609, , 613
ESP10, 445, 456, 462, 465, 467, 611, , 615
ESP10, 444, 456, 462, 464, 466, 614, , 618
ESP10, 444, 456, 463, 464, 465, 616, , 620
ESP10, 444, 457, 462, 464, 465, 618, , 622
ESP10, 443, 457, 462, 464, 465, 621, , 625
ESP10, 445, 459, 463, 464, 465, 623, , 627
ESP10, 446, 459, 463, 464, 465, 626, , 630
ESP10, 448, 456, 462, 464, 465, 628, , 632
ESP10, 446, 456, 460, 462, 463, 630, , 634
ESP10, 451, 458, 461, 463, 464, 633, , 637
ESP10, 452, 456, 459, 460, 461, 635, , 639
ESP10, 448, 452, 454, 455, 455, 638, , 642
ESP10, 449, 451, 453, 454, 454, 640, , 644
ESP10, 449, 451, 452, 453, 454, 642, , 646
ESP10, 449, 451, 452, 453, 453, 645, , 649
ESP10, 446, 448, 449, 450, 450, 647, , 651
ESP10, 446, 447, 449, 450, 450, 649, , 653
ESP10, 447, 447, 448, 449, 450, 652, , 656
ESP10, 446, 447, 448, 449, 449, 654, , 658
ESP10, 446, 446, 448, 449, 449, 657, , 661
ESP10, 444, 445, 446, 447, 447, 659, , 663
ESP10, 444, 445, 446, 447, 447, 661, , 665
ESP10, 444, 445, 446, 447, 447, 664, , 668
ESP10, 444, 445, 446, 447, 447, 666, , 670
ESP10, 444, 445, 446, 447, 448, 669, , 673
ESP10, 443, 443, 445, 445, 446, 671, , 675
ESP10, 442, 443, 445, 445, 446, 673, , 677
ESP10, 441, 442, 443, 444, 444, 676, , 680
ESP10, 442, 442, 444, 444, 445, 678, , 682
ESP10, 442, 442, 444, 444, 445, 681, , 685
ESP10, 442, 442, 444, 444, 445, 683, , 687
ESP10, 441, 442, 444, 444, 445, 685, , 689
ESP10, 441, 442, 443, 444, 444, 688, , 692
ESP10, 441, 442, 443, 444, 444, 690, , 694
ESP10, 441, 442, 443, 444, 444, 693, , 697
ESP10, 432, 433, 434, 435, 436, 695, , 699
ESP10, 432, 433, 434, 435, 435, 697, , 701
ESP10, 432, 433, 434, 435, 435, 700, , 704
ESP10, 432, 433, 434, 434, 435, 702, , 706
ESP10, 431, 432, 433, 434, 434, 705, , 709
ESP10, 431, 432, 433, 433, 434, 707, , 711
ESP10, 431, 432, 433, 433, 434, 709, , 713
ESP10, 430, 431, 432, 433, 433, 712, , 716
ESP10, 431, 432, 433, 433, 434, 714, , 718
ESP10, 429, 430, 431, 432, 432, 716, , 720
ESP10, 429, 430, 431, 432, 432, 719, , 723
ESP10, 428, 429, 430, 431, 431, 721, , 725
ESP10, 428, 429, 430, 431, 431, 724, , 728
ESP10, 428, 429, 430, 431, 431, 726, , 730
ESP10, 428, 429, 430, 431, 431, 728, , 732
ESP10, 428, 429, 430, 431, 431, 731, , 735
ESP10, 428, 429, 430, 431, 431, 733, , 737
Max Scale
Scale To Data
Scale To Last 45 Days
Show Min/Max Ensemble Volume
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ESP10
HEFS
ESP0
Data Files
/chpsesp/ensemble/watersupply/ARAI1W_SQIN.ESPF10.csv
ARAI1W_SQIN.ESPF0.csv|2026-07-06
ARAI1W_SQIN.ESPF10.csv|2026-07-06
ARAI1W_SQIN.ESPFM.csv|2026-07-06
APR-SEP
SF BOISE - ANDERSON RANCH DAM
(
ARAI1
)
Forecasts for Water Year
2027
Official Water Supply
ESP with 10 Days QPF
Ensemble:
2026-07-06
Issued:
2026-07-06
Hide Forecast
Forecast
Period
Forecasts Are in KAF
30 Year
Average
(1991-2020)
90 %
50 %
%
Average
10 %
APR-SEP
213
426
86
794
495
APR-JUL
193
397
86
747
462
JAN-SEP
280
505
87
937
583
JAN-JUL
264
478
87
892
550
OCT-SEP
331
560
88
1005
637
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/ARAI1W_SQIN.ESPF10.csv
ARAI1W_SQIN.ESPF0.csv|2026-07-06
ARAI1W_SQIN.ESPF10.csv|2026-07-06
ARAI1W_SQIN.ESPFM.csv|2026-07-06
APR-SEP
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ESP10,ESPM,ESP0
ESP10,ESPM,ESP0
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