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Archive:
Water Year
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FLATHEAD - AT COLUMBIA FALLS
(
CFMM8
)
Forecasts for Water Year
2026
Official Water Supply
ESP with 10 Days QPF
Ensemble:
2026-07-17
Issued:
2026-07-17
Hide Forecast
Forecast
Period
Forecasts Are in KAF
30 Year
Average
(1991-2020)
90 %
50 %
%
Average
10 %
APR-SEP
5344
5348
95
5383
5634
APR-JUL
4951
4951
95
4951
5237
JAN-SEP
6760
6765
108
6800
6244
JAN-JUL
6368
6368
109
6368
5847
OCT-SEP
8105
8110
117
8144
6906
Experimental Water Supply
HEFS with 15 days EQPF
Ensemble:
2026-07-17
Issued:
2026-07-17
Hide Forecast
APR-SEP
5346
5355
95
5406
5634
APR-JUL
4951
4951
95
4968
5237
JAN-SEP
6763
6772
108
6822
6244
JAN-JUL
6368
6368
109
6385
5847
OCT-SEP
8108
8117
118
8167
6906
Reference
ESP with 0 Days QPF
Ensemble:
2026-07-17
Issued:
2026-07-17
Hide Forecast
APR-SEP
5343
5349
95
5398
5634
APR-JUL
4951
4951
95
4953
5237
JAN-SEP
6760
6766
108
6814
6244
JAN-JUL
6368
6368
109
6370
5847
OCT-SEP
8105
8111
117
8159
6906
Move the mouse over the desired "Forecast Period" to display a graph.
ESP10, 201, 277, 345, 420, 454, 70, , 74
ESP10, 202, 278, 346, 416, 450, 73, , 77
ESP10, 203, 277, 347, 415, 457, 75, , 79
ESP10, 204, 277, 346, 414, 455, 77, , 81
ESP10, 208, 276, 346, 413, 454, 80, , 84
ESP10, 201, 267, 338, 404, 453, 82, , 86
ESP10, 206, 272, 343, 408, 459, 84, , 88
ESP10, 210, 272, 345, 409, 461, 86, , 90
ESP10, 210, 272, 345, 409, 463, 89, , 93
ESP10, 206, 269, 341, 404, 458, 91, , 95
ESP10, 210, 267, 337, 401, 458, 93, , 97
ESP10, 220, 276, 346, 408, 466, 96, , 100
ESP10, 221, 278, 346, 408, 470, 98, , 102
ESP10, 220, 278, 345, 407, 470, 100, , 104
ESP10, 215, 273, 341, 402, 466, 103, , 107
ESP10, 206, 266, 336, 394, 458, 105, , 109
ESP10, 198, 267, 329, 388, 451, 107, , 111
ESP10, 204, 277, 335, 392, 456, 109, , 113
ESP10, 199, 273, 332, 389, 450, 112, , 116
ESP10, 205, 279, 335, 398, 453, 114, , 118
ESP10, 194, 285, 325, 390, 443, 116, , 120
ESP10, 200, 290, 333, 395, 447, 119, , 123
ESP10, 196, 282, 327, 387, 449, 121, , 125
ESP10, 212, 289, 334, 399, 457, 123, , 127
ESP10, 216, 287, 336, 395, 460, 126, , 130
ESP10, 212, 281, 334, 392, 460, 128, , 132
ESP10, 213, 281, 338, 392, 461, 130, , 134
ESP10, 218, 283, 342, 398, 466, 132, , 136
ESP10, 217, 277, 336, 392, 461, 135, , 139
ESP10, 203, 261, 322, 376, 446, 137, , 141
ESP10, 209, 265, 328, 382, 451, 139, , 143
ESP10, 213, 265, 330, 387, 453, 142, , 146
ESP10, 204, 254, 325, 378, 443, 144, , 148
ESP10, 215, 261, 338, 389, 450, 146, , 150
ESP10, 216, 264, 338, 389, 449, 149, , 153
ESP10, 219, 267, 338, 391, 456, 151, , 155
ESP10, 221, 265, 336, 391, 454, 153, , 157
ESP10, 216, 257, 333, 381, 444, 155, , 159
ESP10, 222, 261, 341, 386, 448, 158, , 162
ESP10, 221, 263, 342, 384, 446, 160, , 164
ESP10, 222, 267, 342, 388, 446, 162, , 166
ESP10, 233, 280, 350, 398, 452, 165, , 169
ESP10, 236, 280, 348, 396, 450, 167, , 171
ESP10, 238, 285, 354, 400, 450, 169, , 173
ESP10, 227, 273, 346, 391, 439, 172, , 176
ESP10, 235, 280, 356, 399, 448, 174, , 178
ESP10, 221, 267, 345, 387, 435, 176, , 180
ESP10, 235, 281, 360, 403, 450, 179, , 183
ESP10, 233, 275, 354, 400, 455, 181, , 185
ESP10, 239, 277, 360, 405, 458, 183, , 187
ESP10, 232, 270, 351, 400, 449, 185, , 189
ESP10, 238, 273, 352, 402, 455, 188, , 192
ESP10, 238, 265, 344, 393, 445, 190, , 194
ESP10, 247, 277, 355, 400, 453, 192, , 196
ESP10, 236, 271, 345, 393, 447, 195, , 199
ESP10, 240, 272, 345, 392, 453, 197, , 201
ESP10, 238, 271, 346, 387, 454, 199, , 203
ESP10, 236, 268, 344, 384, 452, 202, , 206
ESP10, 240, 275, 348, 387, 454, 204, , 208
ESP10, 228, 263, 334, 381, 442, 206, , 210
ESP10, 212, 252, 318, 372, 428, 208, , 212
ESP10, 221, 263, 327, 379, 438, 211, , 215
ESP10, 199, 241, 308, 360, 418, 213, , 217
ESP10, 179, 222, 292, 342, 402, 215, , 219
ESP10, 185, 228, 299, 350, 407, 218, , 222
ESP10, 187, 228, 306, 350, 407, 220, , 224
ESP10, 198, 238, 319, 359, 416, 222, , 226
ESP10, 184, 223, 307, 344, 402, 225, , 229
ESP10, 156, 196, 278, 316, 377, 227, , 231
ESP10, 148, 190, 269, 306, 370, 229, , 233
ESP10, 143, 188, 265, 303, 370, 231, , 235
ESP10, 151, 198, 276, 312, 381, 234, , 238
ESP10, 161, 212, 287, 322, 389, 236, , 240
ESP10, 161, 207, 282, 315, 388, 238, , 242
ESP10, 174, 218, 295, 329, 401, 241, , 245
ESP10, 179, 220, 299, 336, 404, 243, , 247
ESP10, 196, 239, 314, 355, 421, 245, , 249
ESP10, 200, 243, 314, 354, 419, 248, , 252
ESP10, 207, 249, 319, 358, 424, 250, , 254
ESP10, 204, 249, 319, 355, 421, 252, , 256
ESP10, 210, 257, 326, 359, 425, 254, , 258
ESP10, 213, 261, 327, 361, 426, 257, , 261
ESP10, 223, 275, 337, 378, 436, 259, , 263
ESP10, 229, 276, 338, 379, 436, 261, , 265
ESP10, 227, 268, 332, 369, 428, 264, , 268
ESP10, 228, 267, 332, 372, 430, 266, , 270
ESP10, 228, 272, 331, 373, 429, 268, , 272
ESP10, 235, 279, 336, 380, 433, 271, , 275
ESP10, 240, 281, 337, 384, 432, 273, , 277
ESP10, 243, 284, 338, 384, 433, 275, , 279
ESP10, 251, 295, 343, 393, 440, 278, , 282
ESP10, 247, 290, 340, 388, 434, 280, , 284
ESP10, 251, 289, 337, 386, 430, 282, , 286
ESP10, 256, 293, 341, 387, 432, 284, , 288
ESP10, 252, 287, 336, 381, 426, 287, , 291
ESP10, 247, 283, 334, 380, 424, 289, , 293
ESP10, 246, 282, 335, 379, 425, 291, , 295
ESP10, 252, 288, 340, 382, 430, 294, , 298
ESP10, 259, 294, 347, 387, 434, 296, , 300
ESP10, 260, 300, 349, 392, 435, 298, , 302
ESP10, 264, 302, 356, 397, 436, 301, , 305
ESP10, 266, 304, 357, 398, 436, 303, , 307
ESP10, 266, 307, 358, 399, 436, 305, , 309
ESP10, 259, 302, 352, 394, 432, 307, , 311
ESP10, 263, 307, 355, 396, 442, 310, , 314
ESP10, 264, 305, 353, 394, 440, 312, , 316
ESP10, 266, 307, 354, 395, 440, 314, , 318
ESP10, 269, 311, 357, 400, 442, 317, , 321
ESP10, 265, 313, 357, 398, 443, 319, , 323
ESP10, 276, 325, 367, 407, 453, 321, , 325
ESP10, 276, 327, 368, 407, 452, 324, , 328
ESP10, 277, 331, 372, 408, 453, 326, , 330
ESP10, 276, 334, 372, 407, 453, 328, , 332
ESP10, 280, 342, 375, 411, 456, 330, , 334
ESP10, 279, 347, 375, 411, 457, 333, , 337
ESP10, 286, 350, 375, 413, 458, 335, , 339
ESP10, 291, 350, 376, 414, 461, 337, , 341
ESP10, 299, 347, 376, 414, 459, 340, , 344
ESP10, 301, 345, 376, 412, 458, 342, , 346
ESP10, 302, 350, 380, 411, 459, 344, , 348
ESP10, 307, 350, 381, 413, 460, 347, , 351
ESP10, 307, 344, 380, 409, 455, 349, , 353
ESP10, 306, 342, 379, 409, 453, 351, , 355
ESP10, 306, 341, 378, 410, 453, 353, , 357
ESP10, 319, 347, 384, 416, 458, 356, , 360
ESP10, 317, 354, 383, 415, 457, 358, , 362
ESP10, 312, 349, 378, 411, 451, 360, , 364
ESP10, 314, 348, 377, 412, 449, 363, , 367
ESP10, 310, 344, 373, 406, 442, 365, , 369
ESP10, 319, 360, 385, 417, 452, 367, , 371
ESP10, 324, 363, 386, 421, 456, 370, , 374
ESP10, 326, 364, 389, 423, 461, 372, , 376
ESP10, 321, 360, 390, 419, 465, 374, , 378
ESP10, 330, 365, 394, 422, 472, 377, , 381
ESP10, 331, 360, 392, 418, 470, 379, , 383
ESP10, 330, 359, 390, 420, 468, 381, , 385
ESP10, 328, 356, 388, 423, 465, 383, , 387
ESP10, 328, 357, 388, 426, 466, 386, , 390
ESP10, 323, 352, 381, 421, 459, 388, , 392
ESP10, 327, 356, 385, 426, 462, 390, , 394
ESP10, 321, 350, 380, 422, 462, 393, , 397
ESP10, 321, 348, 380, 420, 461, 395, , 399
ESP10, 317, 340, 377, 412, 454, 397, , 401
ESP10, 320, 340, 378, 412, 453, 400, , 404
ESP10, 328, 347, 383, 419, 456, 402, , 406
ESP10, 337, 357, 392, 426, 462, 404, , 408
ESP10, 339, 363, 396, 430, 464, 406, , 410
ESP10, 338, 363, 396, 430, 463, 409, , 413
ESP10, 337, 363, 395, 428, 461, 411, , 415
ESP10, 326, 360, 389, 419, 452, 413, , 417
ESP10, 335, 368, 398, 428, 459, 416, , 420
ESP10, 331, 365, 393, 424, 454, 418, , 422
ESP10, 325, 362, 388, 419, 450, 420, , 424
ESP10, 319, 356, 382, 414, 444, 423, , 427
ESP10, 317, 358, 381, 412, 439, 425, , 429
ESP10, 314, 355, 377, 407, 433, 427, , 431
ESP10, 304, 345, 366, 398, 423, 429, , 433
ESP10, 307, 348, 370, 402, 425, 432, , 436
ESP10, 294, 337, 359, 391, 411, 434, , 438
ESP10, 307, 352, 372, 403, 424, 436, , 440
ESP10, 319, 364, 388, 412, 434, 439, , 443
ESP10, 320, 365, 387, 414, 433, 441, , 445
ESP10, 323, 367, 391, 417, 436, 443, , 447
ESP10, 328, 375, 397, 424, 442, 446, , 450
ESP10, 323, 370, 394, 423, 438, 448, , 452
ESP10, 317, 365, 389, 417, 433, 450, , 454
ESP10, 310, 359, 382, 410, 428, 453, , 457
ESP10, 311, 360, 383, 411, 429, 455, , 459
ESP10, 312, 356, 380, 407, 426, 457, , 461
ESP10, 313, 356, 379, 405, 424, 459, , 463
ESP10, 315, 354, 380, 402, 422, 462, , 466
ESP10, 313, 348, 379, 396, 417, 464, , 468
ESP10, 315, 350, 382, 398, 420, 466, , 470
ESP10, 306, 339, 371, 389, 413, 469, , 473
ESP10, 308, 340, 371, 393, 414, 471, , 475
ESP10, 305, 340, 371, 392, 412, 473, , 477
ESP10, 303, 335, 368, 388, 404, 476, , 480
ESP10, 308, 340, 374, 398, 410, 478, , 482
ESP10, 308, 342, 378, 400, 412, 480, , 484
ESP10, 309, 341, 378, 401, 413, 482, , 486
ESP10, 310, 340, 379, 402, 417, 485, , 489
ESP10, 310, 340, 378, 402, 416, 487, , 491
ESP10, 309, 338, 375, 399, 412, 489, , 493
ESP10, 318, 349, 383, 408, 423, 492, , 496
ESP10, 322, 354, 382, 409, 424, 494, , 498
ESP10, 317, 351, 378, 405, 421, 496, , 500
ESP10, 317, 353, 378, 404, 423, 499, , 503
ESP10, 321, 359, 382, 408, 429, 501, , 505
ESP10, 317, 357, 380, 404, 426, 503, , 507
ESP10, 313, 352, 376, 399, 418, 505, , 509
ESP10, 311, 350, 374, 396, 415, 508, , 512
ESP10, 316, 354, 379, 400, 419, 510, , 514
ESP10, 326, 363, 389, 410, 430, 512, , 516
ESP10, 318, 357, 381, 403, 423, 515, , 519
ESP10, 318, 358, 383, 403, 422, 517, , 521
ESP10, 319, 363, 389, 404, 423, 519, , 523
ESP10, 305, 350, 376, 393, 409, 522, , 526
ESP10, 324, 361, 387, 404, 420, 524, , 528
ESP10, 326, 357, 386, 402, 417, 526, , 530
ESP10, 336, 361, 391, 407, 422, 528, , 532
ESP10, 338, 360, 392, 406, 421, 531, , 535
ESP10, 339, 357, 389, 406, 419, 533, , 537
ESP10, 340, 357, 391, 405, 419, 535, , 539
ESP10, 338, 356, 389, 407, 419, 538, , 542
ESP10, 331, 352, 385, 402, 415, 540, , 544
ESP10, 328, 351, 384, 402, 412, 542, , 546
ESP10, 327, 347, 383, 398, 409, 545, , 549
ESP10, 324, 344, 380, 398, 405, 547, , 551
ESP10, 323, 345, 378, 398, 405, 549, , 553
ESP10, 322, 347, 378, 398, 405, 552, , 556
ESP10, 325, 349, 379, 400, 408, 554, , 558
ESP10, 329, 357, 389, 406, 415, 556, , 560
ESP10, 342, 374, 402, 420, 430, 558, , 562
ESP10, 340, 374, 403, 420, 429, 561, , 565
ESP10, 339, 370, 398, 416, 425, 563, , 567
ESP10, 337, 368, 397, 414, 424, 565, , 569
ESP10, 334, 364, 395, 410, 423, 568, , 572
ESP10, 332, 363, 394, 409, 422, 570, , 574
ESP10, 334, 358, 389, 405, 418, 572, , 576
ESP10, 336, 358, 391, 406, 419, 575, , 579
ESP10, 339, 360, 392, 406, 418, 577, , 581
ESP10, 340, 360, 388, 405, 416, 579, , 583
ESP10, 338, 359, 384, 400, 411, 581, , 585
ESP10, 344, 362, 393, 406, 414, 584, , 588
ESP10, 327, 345, 379, 390, 399, 586, , 590
ESP10, 334, 356, 388, 400, 407, 588, , 592
ESP10, 326, 354, 380, 392, 400, 591, , 595
ESP10, 322, 351, 376, 390, 398, 593, , 597
ESP10, 324, 356, 382, 392, 399, 595, , 599
ESP10, 328, 361, 383, 394, 400, 598, , 602
ESP10, 319, 358, 378, 386, 392, 600, , 604
ESP10, 317, 354, 375, 383, 388, 602, , 606
ESP10, 321, 353, 372, 380, 386, 604, , 608
ESP10, 312, 343, 361, 368, 376, 607, , 611
ESP10, 318, 349, 366, 372, 380, 609, , 613
ESP10, 318, 349, 367, 373, 379, 611, , 615
ESP10, 312, 346, 360, 368, 372, 614, , 618
ESP10, 332, 364, 378, 385, 390, 616, , 620
ESP10, 323, 341, 357, 366, 369, 618, , 622
ESP10, 316, 331, 347, 356, 360, 621, , 625
ESP10, 330, 347, 360, 370, 375, 623, , 627
ESP10, 327, 346, 360, 367, 372, 625, , 629
ESP10, 326, 345, 357, 367, 371, 627, , 631
ESP10, 323, 341, 356, 364, 367, 630, , 634
ESP10, 320, 339, 356, 362, 365, 632, , 636
ESP10, 310, 323, 338, 346, 348, 634, , 638
ESP10, 319, 332, 346, 352, 356, 637, , 641
ESP10, 324, 338, 351, 358, 363, 639, , 643
ESP10, 339, 355, 364, 372, 376, 641, , 645
ESP10, 340, 351, 359, 367, 372, 644, , 648
ESP10, 344, 356, 360, 368, 372, 646, , 650
ESP10, 352, 360, 365, 371, 373, 648, , 652
ESP10, 356, 363, 368, 372, 375, 651, , 655
ESP10, 354, 362, 367, 371, 373, 653, , 657
ESP10, 357, 363, 370, 372, 375, 655, , 659
ESP10, 360, 366, 372, 374, 376, 657, , 661
ESP10, 361, 366, 373, 375, 376, 660, , 664
ESP10, 361, 367, 372, 375, 376, 662, , 666
ESP10, 359, 366, 371, 373, 374, 664, , 668
ESP10, 361, 369, 373, 375, 376, 667, , 671
ESP10, 361, 369, 372, 375, 375, 669, , 673
ESP10, 360, 367, 371, 373, 373, 671, , 675
ESP10, 359, 367, 370, 372, 373, 674, , 678
ESP10, 356, 363, 366, 367, 368, 676, , 680
ESP10, 356, 363, 365, 367, 367, 678, , 682
ESP10, 360, 366, 368, 369, 369, 680, , 684
ESP10, 354, 360, 362, 363, 363, 683, , 687
ESP10, 350, 356, 357, 358, 358, 685, , 689
ESP10, 343, 349, 350, 351, 351, 687, , 691
ESP10, 335, 340, 342, 342, 343, 690, , 694
ESP10, 339, 344, 345, 346, 346, 692, , 696
ESP10, 348, 352, 353, 354, 354, 694, , 698
ESP10, 348, 351, 352, 353, 353, 697, , 701
ESP10, 346, 349, 350, 350, 350, 699, , 703
ESP10, 345, 348, 349, 350, 350, 701, , 705
ESP10, 343, 345, 346, 347, 347, 703, , 707
ESP10, 342, 344, 345, 346, 346, 706, , 710
ESP10, 342, 344, 345, 346, 346, 708, , 712
ESP10, 342, 344, 345, 345, 345, 710, , 714
ESP10, 342, 344, 345, 345, 345, 713, , 717
ESP10, 342, 344, 345, 345, 345, 715, , 719
ESP10, 343, 344, 345, 345, 345, 717, , 721
ESP10, 342, 343, 344, 344, 344, 720, , 724
ESP10, 342, 343, 344, 344, 345, 722, , 726
ESP10, 342, 343, 344, 344, 345, 724, , 728
ESP10, 341, 343, 344, 344, 345, 726, , 730
ESP10, 342, 343, 344, 344, 345, 729, , 733
ESP10, 342, 344, 344, 345, 345, 731, , 735
ESP10, 342, 344, 344, 345, 345, 733, , 737
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/CFMM8W_SQIN.ESPF10.csv
CFMM8W_SQIN.ESPF0.csv|2026-07-17
CFMM8W_SQIN.ESPF10.csv|2026-07-17
CFMM8W_SQIN.ESPFM.csv|2026-07-17
APR-SEP
FLATHEAD - AT COLUMBIA FALLS
(
CFMM8
)
Forecasts for Water Year
2027
Official Water Supply
ESP with 10 Days QPF
Ensemble:
2026-07-17
Issued:
2026-07-17
Hide Forecast
Forecast
Period
Forecasts Are in KAF
30 Year
Average
(1991-2020)
90 %
50 %
%
Average
10 %
APR-SEP
4024
5533
98
7769
5634
APR-JUL
3660
5069
97
7171
5237
JAN-SEP
4332
6149
98
8167
6244
JAN-JUL
3983
5669
97
7569
5847
OCT-SEP
4674
6829
99
9086
6906
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/CFMM8W_SQIN.ESPF10.csv
CFMM8W_SQIN.ESPF0.csv|2026-07-17
CFMM8W_SQIN.ESPF10.csv|2026-07-17
CFMM8W_SQIN.ESPFM.csv|2026-07-17
APR-SEP
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ESP10,ESPM,ESP0
ESP10,ESPM,ESP0
Last Forecast
