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Water Year
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FLATHEAD - AT PERMA
(
PERM8
)
Forecasts for Water Year
2026
Natural Forecast
ESP with 10 Days QPF
Ensemble:
2026-08-16
Issued:
2026-08-16
Hide Forecast
Forecast
Period
Forecasts Are in KAF
30 Year
Average
(1991-2020)
90 %
50 %
%
Average
10 %
APR-SEP
7348
7352
98
7364
7496
APR-JUL
6588
6588
97
6588
6821
APR-AUG
7105
7105
98
7105
7235
JAN-SEP
9088
9093
107
9105
8510
JAN-JUL
8329
8329
106
8329
7835
OCT-SEP
10426
10431
110
10443
9496
Experimental
HEFS with 15 days EQPF
Ensemble:
2026-08-16
Issued:
2026-08-16
Hide Forecast
APR-SEP
7347
7352
98
7377
7496
APR-JUL
6588
6588
97
6588
6821
APR-AUG
7104
7105
98
7105
7235
JAN-SEP
9088
9093
107
9117
8510
JAN-JUL
8329
8329
106
8329
7835
OCT-SEP
10426
10430
110
10455
9496
Reference
ESP with 0 Days QPF
Ensemble:
2026-08-16
Issued:
2026-08-16
Hide Forecast
APR-SEP
7348
7354
98
7393
7496
APR-JUL
6588
6588
97
6588
6821
APR-AUG
7104
7105
98
7108
7235
JAN-SEP
9089
9095
107
9134
8510
JAN-JUL
8329
8329
106
8329
7835
OCT-SEP
10427
10433
110
10471
9496
Move the mouse over the desired "Forecast Period" to display a graph.
ESP10, 238, 300, 371, 427, 470, 70, , 74
ESP10, 238, 296, 369, 424, 465, 72, , 76
ESP10, 239, 295, 371, 424, 467, 74, , 78
ESP10, 241, 295, 372, 424, 467, 76, , 80
ESP10, 245, 295, 371, 424, 466, 78, , 82
ESP10, 237, 286, 362, 417, 465, 81, , 85
ESP10, 241, 294, 367, 420, 470, 83, , 87
ESP10, 242, 296, 369, 420, 473, 85, , 89
ESP10, 240, 295, 367, 420, 472, 87, , 91
ESP10, 236, 293, 363, 416, 466, 89, , 93
ESP10, 234, 293, 358, 412, 466, 91, , 95
ESP10, 247, 302, 366, 419, 478, 93, , 97
ESP10, 249, 302, 365, 419, 479, 95, , 99
ESP10, 248, 300, 364, 418, 481, 97, , 101
ESP10, 239, 295, 356, 410, 475, 99, , 103
ESP10, 229, 292, 347, 403, 467, 101, , 105
ESP10, 221, 289, 338, 400, 460, 103, , 107
ESP10, 227, 294, 343, 407, 464, 106, , 110
ESP10, 221, 289, 342, 406, 459, 108, , 112
ESP10, 224, 298, 346, 412, 461, 110, , 114
ESP10, 213, 296, 337, 402, 453, 112, , 116
ESP10, 219, 301, 346, 410, 457, 114, , 118
ESP10, 214, 292, 339, 404, 458, 116, , 120
ESP10, 232, 300, 349, 413, 465, 118, , 122
ESP10, 231, 300, 352, 413, 470, 120, , 124
ESP10, 227, 294, 350, 412, 470, 122, , 126
ESP10, 226, 293, 352, 411, 470, 124, , 128
ESP10, 235, 295, 359, 417, 475, 126, , 130
ESP10, 232, 289, 357, 413, 471, 129, , 133
ESP10, 214, 272, 340, 397, 455, 131, , 135
ESP10, 219, 278, 346, 404, 460, 133, , 137
ESP10, 225, 278, 349, 404, 462, 135, , 139
ESP10, 217, 274, 342, 397, 453, 137, , 141
ESP10, 225, 283, 349, 402, 459, 139, , 143
ESP10, 227, 284, 350, 402, 458, 141, , 145
ESP10, 230, 286, 352, 404, 464, 143, , 147
ESP10, 232, 284, 352, 407, 463, 145, , 149
ESP10, 230, 278, 346, 399, 454, 147, , 151
ESP10, 236, 281, 353, 403, 457, 149, , 153
ESP10, 234, 282, 352, 400, 455, 151, , 155
ESP10, 236, 283, 354, 401, 456, 154, , 158
ESP10, 244, 290, 362, 408, 460, 156, , 160
ESP10, 246, 291, 362, 406, 459, 158, , 162
ESP10, 249, 294, 364, 408, 463, 160, , 164
ESP10, 239, 285, 358, 402, 455, 162, , 166
ESP10, 245, 294, 364, 408, 459, 164, , 168
ESP10, 232, 284, 355, 400, 448, 166, , 170
ESP10, 246, 297, 369, 414, 463, 168, , 172
ESP10, 246, 294, 363, 415, 463, 170, , 174
ESP10, 250, 298, 369, 420, 466, 172, , 176
ESP10, 241, 289, 363, 413, 457, 174, , 178
ESP10, 248, 291, 364, 418, 463, 177, , 181
ESP10, 247, 280, 357, 408, 453, 179, , 183
ESP10, 257, 290, 366, 416, 461, 181, , 185
ESP10, 243, 292, 356, 406, 450, 183, , 187
ESP10, 247, 291, 355, 407, 455, 185, , 189
ESP10, 244, 291, 350, 402, 453, 187, , 191
ESP10, 243, 290, 349, 400, 451, 189, , 193
ESP10, 247, 296, 353, 404, 455, 191, , 195
ESP10, 233, 279, 338, 393, 442, 193, , 197
ESP10, 214, 258, 320, 376, 426, 195, , 199
ESP10, 222, 266, 330, 385, 433, 197, , 201
ESP10, 199, 244, 310, 369, 412, 199, , 203
ESP10, 175, 221, 292, 350, 389, 202, , 206
ESP10, 180, 227, 299, 356, 394, 204, , 208
ESP10, 181, 226, 301, 356, 392, 206, , 210
ESP10, 194, 239, 315, 369, 404, 208, , 212
ESP10, 181, 223, 300, 355, 388, 210, , 214
ESP10, 154, 196, 275, 329, 363, 212, , 216
ESP10, 145, 188, 264, 317, 355, 214, , 218
ESP10, 144, 190, 260, 316, 359, 216, , 220
ESP10, 152, 199, 269, 322, 369, 218, , 222
ESP10, 158, 209, 277, 329, 375, 220, , 224
ESP10, 162, 207, 274, 324, 376, 222, , 226
ESP10, 177, 224, 289, 334, 396, 225, , 229
ESP10, 182, 233, 299, 338, 401, 227, , 231
ESP10, 196, 246, 312, 351, 414, 229, , 233
ESP10, 201, 245, 312, 350, 417, 231, , 235
ESP10, 211, 252, 320, 356, 423, 233, , 237
ESP10, 207, 249, 320, 355, 419, 235, , 239
ESP10, 213, 255, 326, 363, 422, 237, , 241
ESP10, 217, 262, 331, 366, 422, 239, , 243
ESP10, 227, 276, 342, 381, 431, 241, , 245
ESP10, 232, 275, 340, 382, 430, 243, , 247
ESP10, 233, 265, 331, 373, 421, 245, , 249
ESP10, 234, 265, 333, 373, 425, 248, , 252
ESP10, 234, 266, 332, 375, 424, 250, , 254
ESP10, 238, 276, 337, 383, 428, 252, , 256
ESP10, 240, 282, 341, 385, 430, 254, , 258
ESP10, 246, 285, 345, 388, 430, 256, , 260
ESP10, 257, 300, 352, 396, 439, 258, , 262
ESP10, 255, 296, 350, 389, 433, 260, , 264
ESP10, 257, 296, 348, 385, 429, 262, , 266
ESP10, 258, 306, 351, 387, 430, 264, , 268
ESP10, 251, 301, 346, 382, 424, 266, , 270
ESP10, 247, 298, 344, 386, 421, 268, , 272
ESP10, 246, 298, 344, 387, 422, 270, , 274
ESP10, 251, 301, 347, 389, 428, 273, , 277
ESP10, 253, 302, 347, 392, 428, 275, , 279
ESP10, 255, 303, 349, 394, 429, 277, , 281
ESP10, 257, 305, 351, 396, 431, 279, , 283
ESP10, 257, 305, 351, 395, 431, 281, , 285
ESP10, 257, 309, 352, 396, 431, 283, , 287
ESP10, 251, 309, 348, 391, 427, 285, , 289
ESP10, 252, 313, 351, 393, 437, 287, , 291
ESP10, 256, 313, 350, 393, 436, 289, , 293
ESP10, 258, 314, 352, 394, 435, 291, , 295
ESP10, 260, 318, 356, 403, 438, 293, , 297
ESP10, 257, 317, 354, 401, 440, 296, , 300
ESP10, 270, 332, 366, 412, 450, 298, , 302
ESP10, 274, 335, 368, 413, 451, 300, , 304
ESP10, 277, 338, 373, 414, 452, 302, , 306
ESP10, 276, 340, 378, 413, 452, 304, , 308
ESP10, 280, 348, 382, 417, 455, 306, , 310
ESP10, 279, 355, 380, 417, 456, 308, , 312
ESP10, 280, 360, 381, 419, 457, 310, , 314
ESP10, 284, 362, 383, 419, 461, 312, , 316
ESP10, 290, 359, 382, 417, 459, 314, , 318
ESP10, 297, 358, 384, 419, 459, 316, , 320
ESP10, 297, 357, 386, 418, 460, 318, , 322
ESP10, 301, 359, 386, 419, 461, 321, , 325
ESP10, 302, 354, 383, 418, 455, 323, , 327
ESP10, 302, 353, 382, 417, 454, 325, , 329
ESP10, 302, 355, 380, 418, 453, 327, , 331
ESP10, 316, 362, 387, 422, 457, 329, , 333
ESP10, 313, 360, 385, 420, 456, 331, , 335
ESP10, 308, 355, 379, 415, 451, 333, , 337
ESP10, 310, 353, 387, 416, 448, 335, , 339
ESP10, 311, 348, 384, 411, 443, 337, , 341
ESP10, 322, 358, 393, 426, 453, 339, , 343
ESP10, 328, 360, 395, 429, 459, 341, , 345
ESP10, 330, 363, 401, 429, 464, 344, , 348
ESP10, 327, 362, 399, 425, 468, 346, , 350
ESP10, 337, 366, 403, 430, 475, 348, , 352
ESP10, 330, 363, 401, 424, 473, 350, , 354
ESP10, 328, 360, 400, 424, 469, 352, , 356
ESP10, 327, 358, 399, 425, 467, 354, , 358
ESP10, 327, 358, 401, 430, 468, 356, , 360
ESP10, 321, 351, 393, 424, 461, 358, , 362
ESP10, 326, 356, 396, 427, 469, 360, , 364
ESP10, 323, 357, 392, 424, 463, 362, , 366
ESP10, 326, 358, 393, 425, 463, 364, , 368
ESP10, 323, 351, 389, 419, 456, 366, , 370
ESP10, 327, 351, 391, 418, 455, 369, , 373
ESP10, 333, 355, 397, 423, 458, 371, , 375
ESP10, 340, 366, 403, 430, 464, 373, , 377
ESP10, 340, 371, 405, 431, 465, 375, , 379
ESP10, 339, 370, 403, 433, 463, 377, , 381
ESP10, 338, 369, 400, 431, 460, 379, , 383
ESP10, 326, 360, 388, 418, 449, 381, , 385
ESP10, 334, 371, 399, 426, 458, 383, , 387
ESP10, 328, 368, 395, 425, 451, 385, , 389
ESP10, 322, 366, 392, 420, 445, 387, , 391
ESP10, 314, 361, 385, 414, 437, 389, , 393
ESP10, 311, 361, 384, 412, 436, 392, , 396
ESP10, 307, 358, 378, 405, 428, 394, , 398
ESP10, 295, 343, 363, 392, 413, 396, , 400
ESP10, 299, 349, 369, 398, 417, 398, , 402
ESP10, 277, 327, 347, 376, 395, 400, , 404
ESP10, 298, 349, 369, 396, 416, 402, , 406
ESP10, 308, 361, 379, 405, 424, 404, , 408
ESP10, 308, 365, 380, 405, 424, 406, , 410
ESP10, 307, 365, 380, 405, 424, 408, , 412
ESP10, 311, 372, 387, 412, 429, 410, , 414
ESP10, 307, 368, 386, 412, 425, 412, , 416
ESP10, 301, 362, 381, 405, 418, 414, , 418
ESP10, 293, 353, 373, 400, 411, 417, , 421
ESP10, 291, 351, 371, 398, 409, 419, , 423
ESP10, 289, 346, 369, 393, 409, 421, , 425
ESP10, 291, 342, 367, 389, 407, 423, , 427
ESP10, 293, 336, 365, 384, 403, 425, , 429
ESP10, 290, 327, 357, 375, 398, 427, , 431
ESP10, 288, 324, 356, 373, 397, 429, , 433
ESP10, 277, 312, 348, 362, 390, 431, , 435
ESP10, 279, 312, 350, 365, 393, 433, , 437
ESP10, 283, 312, 349, 366, 391, 435, , 439
ESP10, 281, 306, 346, 361, 384, 437, , 441
ESP10, 285, 311, 350, 367, 388, 440, , 444
ESP10, 289, 316, 357, 375, 392, 442, , 446
ESP10, 290, 321, 359, 379, 394, 444, , 448
ESP10, 289, 322, 359, 378, 396, 446, , 450
ESP10, 292, 322, 359, 379, 395, 448, , 452
ESP10, 290, 318, 356, 375, 391, 450, , 454
ESP10, 298, 331, 367, 386, 403, 452, , 456
ESP10, 303, 340, 366, 388, 408, 454, , 458
ESP10, 297, 334, 362, 383, 405, 456, , 460
ESP10, 297, 334, 362, 383, 405, 458, , 462
ESP10, 302, 342, 369, 389, 410, 460, , 464
ESP10, 297, 341, 365, 387, 407, 462, , 466
ESP10, 293, 335, 358, 381, 399, 465, , 469
ESP10, 291, 334, 357, 379, 397, 467, , 471
ESP10, 297, 337, 361, 381, 400, 469, , 473
ESP10, 306, 344, 370, 389, 409, 471, , 475
ESP10, 299, 339, 364, 384, 403, 473, , 477
ESP10, 300, 338, 369, 384, 403, 475, , 479
ESP10, 301, 344, 371, 385, 405, 477, , 481
ESP10, 286, 331, 357, 371, 393, 479, , 483
ESP10, 304, 342, 368, 381, 402, 481, , 485
ESP10, 301, 341, 366, 380, 399, 483, , 487
ESP10, 309, 345, 371, 384, 403, 485, , 489
ESP10, 311, 345, 371, 384, 402, 488, , 492
ESP10, 312, 342, 368, 386, 400, 490, , 494
ESP10, 313, 342, 370, 386, 401, 492, , 496
ESP10, 315, 345, 373, 392, 405, 494, , 498
ESP10, 308, 336, 366, 385, 399, 496, , 500
ESP10, 306, 334, 367, 384, 398, 498, , 502
ESP10, 305, 331, 362, 380, 394, 500, , 504
ESP10, 303, 330, 360, 379, 390, 502, , 506
ESP10, 304, 329, 361, 378, 389, 504, , 508
ESP10, 304, 331, 361, 379, 389, 506, , 510
ESP10, 306, 333, 364, 381, 389, 508, , 512
ESP10, 314, 343, 372, 389, 399, 510, , 514
ESP10, 324, 358, 384, 400, 411, 513, , 517
ESP10, 323, 362, 385, 400, 412, 515, , 519
ESP10, 322, 360, 382, 398, 409, 517, , 521
ESP10, 319, 357, 381, 396, 406, 519, , 523
ESP10, 318, 355, 380, 394, 407, 521, , 525
ESP10, 316, 353, 378, 392, 406, 523, , 527
ESP10, 314, 349, 376, 387, 404, 525, , 529
ESP10, 315, 346, 374, 388, 402, 527, , 531
ESP10, 323, 348, 377, 388, 402, 529, , 533
ESP10, 324, 348, 375, 389, 401, 531, , 535
ESP10, 321, 343, 371, 385, 396, 533, , 537
ESP10, 328, 346, 378, 388, 398, 536, , 540
ESP10, 314, 330, 363, 378, 385, 538, , 542
ESP10, 321, 342, 372, 384, 390, 540, , 544
ESP10, 316, 340, 366, 377, 386, 542, , 546
ESP10, 311, 336, 362, 373, 383, 544, , 548
ESP10, 313, 341, 366, 375, 385, 546, , 550
ESP10, 315, 346, 367, 376, 385, 548, , 552
ESP10, 306, 344, 360, 369, 377, 550, , 554
ESP10, 302, 339, 358, 366, 373, 552, , 556
ESP10, 309, 336, 357, 365, 371, 554, , 558
ESP10, 299, 325, 345, 352, 360, 556, , 560
ESP10, 305, 333, 350, 356, 363, 558, , 562
ESP10, 305, 335, 350, 358, 364, 561, , 565
ESP10, 300, 330, 346, 353, 358, 563, , 567
ESP10, 314, 341, 358, 364, 369, 565, , 569
ESP10, 306, 324, 340, 348, 352, 567, , 571
ESP10, 297, 314, 328, 338, 342, 569, , 573
ESP10, 312, 332, 343, 353, 359, 571, , 575
ESP10, 305, 325, 342, 348, 354, 573, , 577
ESP10, 293, 312, 331, 337, 342, 575, , 579
ESP10, 300, 319, 336, 344, 347, 577, , 581
ESP10, 299, 317, 334, 341, 344, 579, , 583
ESP10, 285, 302, 317, 326, 327, 581, , 585
ESP10, 296, 312, 326, 331, 335, 584, , 588
ESP10, 306, 319, 332, 338, 343, 586, , 590
ESP10, 321, 335, 344, 351, 355, 588, , 592
ESP10, 321, 331, 339, 347, 351, 590, , 594
ESP10, 323, 335, 340, 347, 351, 592, , 596
ESP10, 332, 340, 346, 350, 353, 594, , 598
ESP10, 337, 342, 348, 352, 354, 596, , 600
ESP10, 335, 342, 347, 350, 352, 598, , 602
ESP10, 337, 344, 349, 351, 354, 600, , 604
ESP10, 341, 346, 351, 353, 355, 602, , 606
ESP10, 341, 346, 351, 354, 356, 604, , 608
ESP10, 342, 348, 352, 355, 356, 607, , 611
ESP10, 341, 347, 352, 354, 355, 609, , 613
ESP10, 344, 349, 353, 356, 356, 611, , 615
ESP10, 344, 349, 353, 355, 356, 613, , 617
ESP10, 343, 348, 352, 353, 354, 615, , 619
ESP10, 343, 347, 351, 352, 353, 617, , 621
ESP10, 338, 344, 347, 348, 349, 619, , 623
ESP10, 338, 343, 345, 347, 347, 621, , 625
ESP10, 340, 346, 348, 348, 349, 623, , 627
ESP10, 334, 340, 342, 343, 343, 625, , 629
ESP10, 330, 336, 338, 339, 339, 627, , 631
ESP10, 326, 331, 333, 334, 334, 629, , 633
ESP10, 316, 320, 322, 322, 323, 632, , 636
ESP10, 322, 326, 327, 328, 328, 634, , 638
ESP10, 331, 334, 335, 336, 336, 636, , 640
ESP10, 330, 333, 334, 335, 335, 638, , 642
ESP10, 327, 330, 331, 332, 332, 640, , 644
ESP10, 326, 330, 331, 331, 331, 642, , 646
ESP10, 321, 324, 325, 326, 326, 644, , 648
ESP10, 320, 323, 324, 324, 325, 646, , 650
ESP10, 321, 323, 324, 325, 325, 648, , 652
ESP10, 321, 323, 324, 325, 325, 650, , 654
ESP10, 321, 323, 324, 324, 325, 652, , 656
ESP10, 321, 323, 324, 324, 325, 655, , 659
ESP10, 321, 323, 324, 324, 325, 657, , 661
ESP10, 321, 323, 324, 324, 325, 659, , 663
ESP10, 322, 323, 324, 325, 325, 661, , 665
ESP10, 322, 323, 324, 324, 325, 663, , 667
ESP10, 322, 323, 324, 325, 325, 665, , 669
ESP10, 322, 324, 325, 325, 325, 667, , 671
ESP10, 322, 324, 325, 325, 325, 669, , 673
ESP10, 322, 324, 325, 325, 325, 671, , 675
ESP10, 322, 324, 325, 325, 326, 673, , 677
ESP10, 322, 324, 325, 325, 326, 675, , 679
ESP10, 323, 324, 325, 325, 326, 677, , 681
ESP10, 323, 325, 325, 325, 326, 680, , 684
ESP10, 323, 325, 325, 326, 326, 682, , 686
ESP10, 323, 325, 326, 326, 326, 684, , 688
ESP10, 324, 326, 326, 327, 327, 686, , 690
ESP10, 324, 326, 327, 327, 327, 688, , 692
ESP10, 324, 326, 326, 327, 327, 690, , 694
ESP10, 324, 326, 327, 327, 327, 692, , 696
ESP10, 327, 329, 330, 330, 330, 694, , 698
ESP10, 327, 329, 330, 330, 330, 696, , 700
ESP10, 328, 329, 330, 330, 330, 698, , 702
ESP10, 328, 329, 330, 330, 330, 700, , 704
ESP10, 328, 330, 330, 330, 331, 703, , 707
ESP10, 328, 330, 330, 331, 331, 705, , 709
ESP10, 329, 330, 331, 331, 331, 707, , 711
ESP10, 329, 331, 331, 331, 331, 709, , 713
ESP10, 330, 331, 331, 332, 332, 711, , 715
ESP10, 330, 331, 331, 332, 332, 713, , 717
ESP10, 331, 332, 332, 333, 333, 715, , 719
ESP10, 331, 332, 332, 332, 333, 717, , 721
ESP10, 331, 332, 332, 333, 333, 719, , 723
ESP10, 331, 332, 332, 333, 333, 721, , 725
ESP10, 329, 332, 332, 333, 333, 723, , 727
ESP10, 331, 332, 333, 333, 333, 725, , 729
ESP10, 331, 332, 332, 332, 332, 728, , 732
ESP10, 331, 332, 332, 332, 332, 730, , 734
ESP10, 332, 332, 333, 333, 333, 732, , 736
ESP10, 332, 333, 333, 333, 333, 734, , 738
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/natural/PERM8N_SQIN.ESPF10.csv
PERM8N_SQIN.ESPF0.csv|2026-08-16
PERM8N_SQIN.ESPF10.csv|2026-08-16
PERM8N_SQIN.ESPFM.csv|2026-08-16
APR-SEP
FLATHEAD - AT PERMA
(
PERM8
)
Forecasts for Water Year
2027
Natural Forecast
ESP with 10 Days QPF
Ensemble:
2026-08-16
Issued:
2026-08-16
Hide Forecast
Forecast
Period
Forecasts Are in KAF
30 Year
Average
(1991-2020)
90 %
50 %
%
Average
10 %
APR-SEP
4911
6950
93
9398
7496
APR-JUL
4207
5991
88
8208
6821
APR-AUG
4681
6725
93
8976
7235
JAN-SEP
5427
7652
90
10314
8510
JAN-JUL
4770
6753
86
9337
7835
OCT-SEP
5967
8459
89
11811
9496
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/natural/PERM8N_SQIN.ESPF10.csv
PERM8N_SQIN.ESPF0.csv|2026-08-16
PERM8N_SQIN.ESPF10.csv|2026-08-16
PERM8N_SQIN.ESPFM.csv|2026-08-16
APR-SEP
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ESP10,ESPM,ESP0
ESP10,ESPM,ESP0
Last Forecast
