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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:
2026-09-20
Issued:
2026-09-20
Hide Forecast
Forecast
Period
Forecasts Are in KAF
30 Year
Average
(1991-2020)
90 %
50 %
%
Average
10 %
APR-SEP
5305
5305
94
5305
5634
APR-JUL
4932
4932
94
4932
5237
APR-AUG
5105
5105
93
5105
5473
JAN-SEP
6722
6722
108
6722
6244
JAN-JUL
6349
6349
109
6349
5847
OCT-SEP
8066
8066
117
8066
6906
Experimental Water Supply
HEFS with 15 days EQPF
Ensemble:
2026-09-20
Issued:
2026-09-20
Hide Forecast
APR-SEP
5305
5305
94
5318
5634
APR-JUL
4932
4932
94
4932
5237
APR-AUG
5105
5105
93
5105
5473
JAN-SEP
6722
6722
108
6734
6244
JAN-JUL
6349
6349
109
6349
5847
OCT-SEP
8066
8067
117
8079
6906
Reference
ESP with 0 Days QPF
Ensemble:
2026-09-20
Issued:
2026-09-20
Hide Forecast
APR-SEP
5305
5306
94
5326
5634
APR-JUL
4932
4932
94
4932
5237
APR-AUG
5105
5105
93
5105
5473
JAN-SEP
6722
6723
108
6743
6244
JAN-JUL
6349
6349
109
6349
5847
OCT-SEP
8066
8067
117
8088
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, 72, , 76
ESP10, 203, 277, 347, 415, 457, 74, , 78
ESP10, 204, 277, 346, 414, 455, 76, , 80
ESP10, 208, 276, 346, 413, 454, 77, , 81
ESP10, 201, 267, 338, 404, 453, 79, , 83
ESP10, 206, 272, 343, 408, 459, 81, , 85
ESP10, 210, 272, 345, 409, 461, 83, , 87
ESP10, 210, 272, 345, 409, 463, 85, , 89
ESP10, 206, 269, 341, 404, 458, 87, , 91
ESP10, 210, 267, 337, 401, 458, 89, , 93
ESP10, 220, 276, 346, 408, 466, 91, , 95
ESP10, 221, 278, 346, 408, 470, 92, , 96
ESP10, 220, 278, 345, 407, 470, 94, , 98
ESP10, 215, 273, 341, 402, 466, 96, , 100
ESP10, 206, 266, 336, 394, 458, 98, , 102
ESP10, 198, 267, 329, 388, 451, 100, , 104
ESP10, 204, 277, 335, 392, 456, 102, , 106
ESP10, 199, 273, 332, 389, 450, 104, , 108
ESP10, 205, 279, 335, 398, 453, 106, , 110
ESP10, 194, 285, 325, 390, 443, 108, , 112
ESP10, 200, 290, 333, 395, 447, 109, , 113
ESP10, 196, 282, 327, 387, 449, 111, , 115
ESP10, 212, 289, 334, 399, 457, 113, , 117
ESP10, 216, 287, 336, 395, 460, 115, , 119
ESP10, 212, 281, 334, 392, 460, 117, , 121
ESP10, 213, 281, 338, 392, 461, 119, , 123
ESP10, 218, 283, 342, 398, 466, 121, , 125
ESP10, 217, 277, 336, 392, 461, 123, , 127
ESP10, 203, 261, 322, 376, 446, 124, , 128
ESP10, 209, 265, 328, 382, 451, 126, , 130
ESP10, 213, 265, 330, 387, 453, 128, , 132
ESP10, 204, 254, 325, 378, 443, 130, , 134
ESP10, 215, 261, 338, 389, 450, 132, , 136
ESP10, 216, 264, 338, 389, 449, 134, , 138
ESP10, 219, 267, 338, 391, 456, 136, , 140
ESP10, 221, 265, 336, 391, 454, 138, , 142
ESP10, 216, 257, 333, 381, 444, 140, , 144
ESP10, 222, 261, 341, 386, 448, 141, , 145
ESP10, 221, 263, 342, 384, 446, 143, , 147
ESP10, 222, 267, 342, 388, 446, 145, , 149
ESP10, 233, 280, 350, 398, 452, 147, , 151
ESP10, 236, 280, 348, 396, 450, 149, , 153
ESP10, 238, 285, 354, 400, 450, 151, , 155
ESP10, 227, 273, 346, 391, 439, 153, , 157
ESP10, 235, 280, 356, 399, 448, 155, , 159
ESP10, 221, 267, 345, 387, 435, 156, , 160
ESP10, 235, 281, 360, 403, 450, 158, , 162
ESP10, 233, 275, 354, 400, 455, 160, , 164
ESP10, 239, 277, 360, 405, 458, 162, , 166
ESP10, 232, 270, 351, 400, 449, 164, , 168
ESP10, 238, 273, 352, 402, 455, 166, , 170
ESP10, 238, 265, 344, 393, 445, 168, , 172
ESP10, 247, 277, 355, 400, 453, 170, , 174
ESP10, 236, 271, 345, 393, 447, 172, , 176
ESP10, 240, 272, 345, 392, 453, 173, , 177
ESP10, 238, 271, 346, 387, 454, 175, , 179
ESP10, 236, 268, 344, 384, 452, 177, , 181
ESP10, 240, 275, 348, 387, 454, 179, , 183
ESP10, 228, 263, 334, 381, 442, 181, , 185
ESP10, 212, 252, 318, 372, 428, 183, , 187
ESP10, 221, 263, 327, 379, 438, 185, , 189
ESP10, 199, 241, 308, 360, 418, 187, , 191
ESP10, 179, 222, 292, 342, 402, 188, , 192
ESP10, 185, 228, 299, 350, 407, 190, , 194
ESP10, 187, 228, 306, 350, 407, 192, , 196
ESP10, 198, 238, 319, 359, 416, 194, , 198
ESP10, 184, 223, 307, 344, 402, 196, , 200
ESP10, 156, 196, 278, 316, 377, 198, , 202
ESP10, 148, 190, 269, 306, 370, 200, , 204
ESP10, 143, 188, 265, 303, 370, 202, , 206
ESP10, 151, 198, 276, 312, 381, 204, , 208
ESP10, 161, 212, 287, 322, 389, 205, , 209
ESP10, 161, 207, 282, 315, 388, 207, , 211
ESP10, 174, 218, 295, 329, 401, 209, , 213
ESP10, 179, 220, 299, 336, 404, 211, , 215
ESP10, 196, 239, 314, 355, 421, 213, , 217
ESP10, 200, 243, 314, 354, 419, 215, , 219
ESP10, 207, 249, 319, 358, 424, 217, , 221
ESP10, 204, 249, 319, 355, 421, 219, , 223
ESP10, 210, 257, 326, 359, 425, 220, , 224
ESP10, 213, 261, 327, 361, 426, 222, , 226
ESP10, 223, 275, 337, 378, 436, 224, , 228
ESP10, 229, 276, 338, 379, 436, 226, , 230
ESP10, 227, 268, 332, 369, 428, 228, , 232
ESP10, 228, 267, 332, 372, 430, 230, , 234
ESP10, 228, 272, 331, 373, 429, 232, , 236
ESP10, 235, 279, 336, 380, 433, 234, , 238
ESP10, 240, 281, 337, 384, 432, 236, , 240
ESP10, 243, 284, 338, 384, 433, 237, , 241
ESP10, 251, 295, 343, 393, 440, 239, , 243
ESP10, 247, 290, 340, 388, 434, 241, , 245
ESP10, 251, 289, 337, 386, 430, 243, , 247
ESP10, 256, 293, 341, 387, 432, 245, , 249
ESP10, 252, 287, 336, 381, 426, 247, , 251
ESP10, 247, 283, 334, 380, 424, 249, , 253
ESP10, 246, 282, 335, 379, 425, 251, , 255
ESP10, 252, 288, 340, 382, 430, 252, , 256
ESP10, 259, 294, 347, 387, 434, 254, , 258
ESP10, 260, 300, 349, 392, 435, 256, , 260
ESP10, 264, 302, 356, 397, 436, 258, , 262
ESP10, 266, 304, 357, 398, 436, 260, , 264
ESP10, 266, 307, 358, 399, 436, 262, , 266
ESP10, 259, 302, 352, 394, 432, 264, , 268
ESP10, 263, 307, 355, 396, 442, 266, , 270
ESP10, 264, 305, 353, 394, 440, 267, , 271
ESP10, 266, 307, 354, 395, 440, 269, , 273
ESP10, 269, 311, 357, 400, 442, 271, , 275
ESP10, 265, 313, 357, 398, 443, 273, , 277
ESP10, 276, 325, 367, 407, 453, 275, , 279
ESP10, 276, 327, 368, 407, 452, 277, , 281
ESP10, 277, 331, 372, 408, 453, 279, , 283
ESP10, 276, 334, 372, 407, 453, 281, , 285
ESP10, 280, 342, 375, 411, 456, 283, , 287
ESP10, 279, 347, 375, 411, 457, 284, , 288
ESP10, 286, 350, 375, 413, 458, 286, , 290
ESP10, 291, 350, 376, 414, 461, 288, , 292
ESP10, 299, 347, 376, 414, 459, 290, , 294
ESP10, 301, 345, 376, 412, 458, 292, , 296
ESP10, 302, 350, 380, 411, 459, 294, , 298
ESP10, 307, 350, 381, 413, 460, 296, , 300
ESP10, 307, 344, 380, 409, 455, 298, , 302
ESP10, 306, 342, 379, 409, 453, 299, , 303
ESP10, 306, 341, 378, 410, 453, 301, , 305
ESP10, 319, 347, 384, 416, 458, 303, , 307
ESP10, 317, 354, 383, 415, 457, 305, , 309
ESP10, 312, 349, 378, 411, 451, 307, , 311
ESP10, 314, 348, 377, 412, 449, 309, , 313
ESP10, 310, 344, 373, 406, 442, 311, , 315
ESP10, 319, 360, 385, 417, 452, 313, , 317
ESP10, 324, 363, 386, 421, 456, 315, , 319
ESP10, 326, 364, 389, 423, 461, 316, , 320
ESP10, 321, 360, 390, 419, 465, 318, , 322
ESP10, 330, 365, 394, 422, 472, 320, , 324
ESP10, 331, 360, 392, 418, 470, 322, , 326
ESP10, 330, 359, 390, 420, 468, 324, , 328
ESP10, 328, 356, 388, 423, 465, 326, , 330
ESP10, 328, 357, 388, 426, 466, 328, , 332
ESP10, 323, 352, 381, 421, 459, 330, , 334
ESP10, 327, 356, 385, 426, 462, 331, , 335
ESP10, 321, 350, 380, 422, 462, 333, , 337
ESP10, 321, 348, 380, 420, 461, 335, , 339
ESP10, 317, 340, 377, 412, 454, 337, , 341
ESP10, 320, 340, 378, 412, 453, 339, , 343
ESP10, 328, 347, 383, 419, 456, 341, , 345
ESP10, 337, 357, 392, 426, 462, 343, , 347
ESP10, 339, 363, 396, 430, 464, 345, , 349
ESP10, 338, 363, 396, 430, 463, 347, , 351
ESP10, 337, 363, 395, 428, 461, 348, , 352
ESP10, 326, 360, 389, 419, 452, 350, , 354
ESP10, 335, 368, 398, 428, 459, 352, , 356
ESP10, 331, 365, 393, 424, 454, 354, , 358
ESP10, 325, 362, 388, 419, 450, 356, , 360
ESP10, 319, 356, 382, 414, 444, 358, , 362
ESP10, 317, 358, 381, 412, 439, 360, , 364
ESP10, 314, 355, 377, 407, 433, 362, , 366
ESP10, 304, 345, 366, 398, 423, 363, , 367
ESP10, 307, 348, 370, 402, 425, 365, , 369
ESP10, 294, 337, 359, 391, 411, 367, , 371
ESP10, 307, 352, 372, 403, 424, 369, , 373
ESP10, 319, 364, 388, 412, 434, 371, , 375
ESP10, 320, 365, 387, 414, 433, 373, , 377
ESP10, 323, 367, 391, 417, 436, 375, , 379
ESP10, 328, 375, 397, 424, 442, 377, , 381
ESP10, 323, 370, 394, 423, 438, 379, , 383
ESP10, 317, 365, 389, 417, 433, 380, , 384
ESP10, 310, 359, 382, 410, 428, 382, , 386
ESP10, 311, 360, 383, 411, 429, 384, , 388
ESP10, 312, 356, 380, 407, 426, 386, , 390
ESP10, 313, 356, 379, 405, 424, 388, , 392
ESP10, 315, 354, 380, 402, 422, 390, , 394
ESP10, 313, 348, 379, 396, 417, 392, , 396
ESP10, 315, 350, 382, 398, 420, 394, , 398
ESP10, 306, 339, 371, 389, 413, 395, , 399
ESP10, 308, 340, 371, 393, 414, 397, , 401
ESP10, 305, 340, 371, 392, 412, 399, , 403
ESP10, 303, 335, 368, 388, 404, 401, , 405
ESP10, 308, 340, 374, 398, 410, 403, , 407
ESP10, 308, 342, 378, 400, 412, 405, , 409
ESP10, 309, 341, 378, 401, 413, 407, , 411
ESP10, 310, 340, 379, 402, 417, 409, , 413
ESP10, 310, 340, 378, 402, 416, 411, , 415
ESP10, 309, 338, 375, 399, 412, 412, , 416
ESP10, 318, 349, 383, 408, 423, 414, , 418
ESP10, 322, 354, 382, 409, 424, 416, , 420
ESP10, 317, 351, 378, 405, 421, 418, , 422
ESP10, 317, 353, 378, 404, 423, 420, , 424
ESP10, 321, 359, 382, 408, 429, 422, , 426
ESP10, 317, 357, 380, 404, 426, 424, , 428
ESP10, 313, 352, 376, 399, 418, 426, , 430
ESP10, 311, 350, 374, 396, 415, 427, , 431
ESP10, 316, 354, 379, 400, 419, 429, , 433
ESP10, 326, 363, 389, 410, 430, 431, , 435
ESP10, 318, 357, 381, 403, 423, 433, , 437
ESP10, 318, 358, 383, 403, 422, 435, , 439
ESP10, 319, 363, 389, 404, 423, 437, , 441
ESP10, 305, 350, 376, 393, 409, 439, , 443
ESP10, 324, 361, 387, 404, 420, 441, , 445
ESP10, 326, 357, 386, 402, 417, 443, , 447
ESP10, 336, 361, 391, 407, 422, 444, , 448
ESP10, 338, 360, 392, 406, 421, 446, , 450
ESP10, 339, 357, 389, 406, 419, 448, , 452
ESP10, 340, 357, 391, 405, 419, 450, , 454
ESP10, 338, 356, 389, 407, 419, 452, , 456
ESP10, 331, 352, 385, 402, 415, 454, , 458
ESP10, 328, 351, 384, 402, 412, 456, , 460
ESP10, 327, 347, 383, 398, 409, 458, , 462
ESP10, 324, 344, 380, 398, 405, 459, , 463
ESP10, 323, 345, 378, 398, 405, 461, , 465
ESP10, 322, 347, 378, 398, 405, 463, , 467
ESP10, 325, 349, 379, 400, 408, 465, , 469
ESP10, 329, 357, 389, 406, 415, 467, , 471
ESP10, 342, 374, 402, 420, 430, 469, , 473
ESP10, 340, 374, 403, 420, 429, 471, , 475
ESP10, 339, 370, 398, 416, 425, 473, , 477
ESP10, 337, 368, 397, 414, 424, 475, , 479
ESP10, 334, 364, 395, 410, 423, 476, , 480
ESP10, 332, 363, 394, 409, 422, 478, , 482
ESP10, 334, 358, 389, 405, 418, 480, , 484
ESP10, 336, 358, 391, 406, 419, 482, , 486
ESP10, 339, 360, 392, 406, 418, 484, , 488
ESP10, 340, 360, 388, 405, 416, 486, , 490
ESP10, 338, 359, 384, 400, 411, 488, , 492
ESP10, 344, 362, 393, 406, 414, 490, , 494
ESP10, 327, 345, 379, 390, 399, 491, , 495
ESP10, 334, 356, 388, 400, 407, 493, , 497
ESP10, 326, 354, 380, 392, 400, 495, , 499
ESP10, 322, 351, 376, 390, 398, 497, , 501
ESP10, 324, 356, 382, 392, 399, 499, , 503
ESP10, 328, 361, 383, 394, 400, 501, , 505
ESP10, 319, 358, 378, 386, 392, 503, , 507
ESP10, 317, 354, 375, 383, 388, 505, , 509
ESP10, 321, 353, 372, 380, 386, 507, , 511
ESP10, 312, 343, 361, 368, 376, 508, , 512
ESP10, 318, 349, 366, 372, 380, 510, , 514
ESP10, 318, 349, 367, 373, 379, 512, , 516
ESP10, 312, 346, 360, 368, 372, 514, , 518
ESP10, 332, 364, 378, 385, 390, 516, , 520
ESP10, 323, 341, 357, 366, 369, 518, , 522
ESP10, 316, 331, 347, 356, 360, 520, , 524
ESP10, 330, 347, 360, 370, 375, 522, , 526
ESP10, 327, 346, 360, 367, 372, 523, , 527
ESP10, 326, 345, 357, 367, 371, 525, , 529
ESP10, 323, 341, 356, 364, 367, 527, , 531
ESP10, 320, 339, 356, 362, 365, 529, , 533
ESP10, 310, 323, 338, 346, 348, 531, , 535
ESP10, 319, 332, 346, 352, 356, 533, , 537
ESP10, 324, 338, 351, 358, 363, 535, , 539
ESP10, 339, 355, 364, 372, 376, 537, , 541
ESP10, 340, 351, 359, 367, 372, 539, , 543
ESP10, 344, 356, 360, 368, 372, 540, , 544
ESP10, 352, 360, 365, 371, 373, 542, , 546
ESP10, 356, 363, 368, 372, 375, 544, , 548
ESP10, 354, 362, 367, 371, 373, 546, , 550
ESP10, 357, 363, 370, 372, 375, 548, , 552
ESP10, 360, 366, 372, 374, 376, 550, , 554
ESP10, 361, 366, 373, 375, 376, 552, , 556
ESP10, 361, 367, 372, 375, 376, 554, , 558
ESP10, 359, 366, 371, 373, 374, 555, , 559
ESP10, 361, 369, 373, 375, 376, 557, , 561
ESP10, 361, 369, 372, 375, 375, 559, , 563
ESP10, 360, 367, 371, 373, 373, 561, , 565
ESP10, 359, 367, 370, 372, 373, 563, , 567
ESP10, 356, 363, 366, 367, 368, 565, , 569
ESP10, 356, 363, 365, 367, 367, 567, , 571
ESP10, 360, 366, 368, 369, 369, 569, , 573
ESP10, 354, 360, 362, 363, 363, 571, , 575
ESP10, 350, 356, 357, 358, 358, 572, , 576
ESP10, 343, 349, 350, 351, 351, 574, , 578
ESP10, 335, 340, 342, 342, 343, 576, , 580
ESP10, 339, 344, 345, 346, 346, 578, , 582
ESP10, 348, 352, 353, 354, 354, 580, , 584
ESP10, 348, 351, 352, 353, 353, 582, , 586
ESP10, 346, 349, 350, 350, 350, 584, , 588
ESP10, 345, 348, 349, 350, 350, 586, , 590
ESP10, 343, 345, 346, 347, 347, 587, , 591
ESP10, 342, 344, 345, 346, 346, 589, , 593
ESP10, 342, 344, 345, 346, 346, 591, , 595
ESP10, 342, 344, 345, 345, 345, 593, , 597
ESP10, 342, 344, 345, 345, 345, 595, , 599
ESP10, 342, 344, 345, 345, 345, 597, , 601
ESP10, 343, 344, 345, 345, 345, 599, , 603
ESP10, 342, 343, 344, 344, 344, 601, , 605
ESP10, 342, 343, 344, 344, 345, 602, , 606
ESP10, 342, 343, 344, 344, 345, 604, , 608
ESP10, 341, 343, 344, 344, 345, 606, , 610
ESP10, 342, 343, 344, 344, 345, 608, , 612
ESP10, 342, 344, 344, 345, 345, 610, , 614
ESP10, 342, 344, 344, 345, 345, 612, , 616
ESP10, 342, 344, 344, 345, 345, 614, , 618
ESP10, 342, 344, 344, 344, 345, 616, , 620
ESP10, 342, 344, 345, 345, 345, 618, , 622
ESP10, 342, 344, 345, 345, 345, 619, , 623
ESP10, 343, 344, 345, 345, 345, 621, , 625
ESP10, 343, 344, 345, 345, 345, 623, , 627
ESP10, 343, 344, 345, 345, 345, 625, , 629
ESP10, 343, 345, 345, 345, 346, 627, , 631
ESP10, 343, 345, 345, 346, 346, 629, , 633
ESP10, 343, 345, 346, 346, 346, 631, , 635
ESP10, 346, 347, 348, 348, 348, 633, , 637
ESP10, 346, 348, 348, 348, 348, 634, , 638
ESP10, 346, 348, 348, 349, 349, 636, , 640
ESP10, 346, 348, 348, 349, 349, 638, , 642
ESP10, 347, 348, 349, 349, 349, 640, , 644
ESP10, 347, 348, 349, 349, 349, 642, , 646
ESP10, 347, 349, 349, 349, 349, 644, , 648
ESP10, 348, 349, 349, 350, 350, 646, , 650
ESP10, 348, 349, 350, 350, 350, 648, , 652
ESP10, 348, 349, 350, 350, 350, 650, , 654
ESP10, 350, 351, 351, 351, 351, 651, , 655
ESP10, 350, 351, 351, 351, 351, 653, , 657
ESP10, 350, 351, 351, 351, 351, 655, , 659
ESP10, 350, 351, 351, 351, 351, 657, , 661
ESP10, 349, 351, 351, 351, 351, 659, , 663
ESP10, 350, 351, 351, 351, 351, 661, , 665
ESP10, 351, 351, 351, 352, 352, 663, , 667
ESP10, 351, 351, 352, 352, 352, 665, , 669
ESP10, 350, 351, 351, 351, 351, 666, , 670
ESP10, 351, 351, 351, 351, 351, 668, , 672
ESP10, 351, 351, 352, 352, 352, 670, , 674
ESP10, 351, 351, 352, 352, 352, 672, , 676
ESP10, 351, 352, 352, 352, 352, 674, , 678
ESP10, 351, 352, 352, 352, 352, 676, , 680
ESP10, 351, 352, 352, 352, 352, 678, , 682
ESP10, 353, 353, 353, 353, 353, 680, , 684
ESP10, 352, 353, 353, 353, 353, 682, , 686
ESP10, 353, 353, 353, 353, 353, 683, , 687
ESP10, 352, 353, 353, 353, 353, 685, , 689
ESP10, 352, 353, 353, 353, 353, 687, , 691
ESP10, 352, 353, 353, 353, 353, 689, , 693
ESP10, 351, 352, 352, 353, 353, 691, , 695
ESP10, 352, 352, 353, 353, 353, 693, , 697
ESP10, 352, 352, 353, 353, 353, 695, , 699
ESP10, 352, 352, 353, 353, 353, 697, , 701
ESP10, 352, 352, 353, 353, 353, 698, , 702
ESP10, 352, 352, 353, 353, 353, 700, , 704
ESP10, 351, 352, 352, 352, 352, 702, , 706
ESP10, 348, 350, 351, 351, 352, 704, , 708
ESP10, 347, 349, 350, 351, 351, 706, , 710
ESP10, 347, 348, 349, 350, 350, 708, , 712
ESP10, 347, 349, 349, 350, 350, 710, , 714
ESP10, 346, 347, 348, 349, 349, 712, , 716
ESP10, 346, 347, 348, 348, 348, 714, , 718
ESP10, 346, 347, 348, 348, 348, 715, , 719
ESP10, 345, 346, 346, 346, 346, 717, , 721
ESP10, 346, 347, 347, 347, 347, 719, , 723
ESP10, 347, 348, 348, 348, 348, 721, , 725
ESP10, 347, 348, 348, 348, 348, 723, , 727
ESP10, 347, 347, 348, 348, 348, 725, , 729
ESP10, 347, 347, 348, 348, 348, 727, , 731
ESP10, 347, 347, 347, 347, 347, 729, , 733
ESP10, 347, 348, 348, 348, 348, 730, , 734
ESP10, 348, 348, 348, 348, 348, 732, , 736
ESP10, 348, 348, 348, 348, 348, 734, , 738
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|2026-09-20
CFMM8W_SQIN.ESPF10.csv|2026-09-20
CFMM8W_SQIN.ESPFM.csv|2026-09-20
APR-SEP
FLATHEAD - AT COLUMBIA FALLS
(
CFMM8
)
Forecasts for Water Year
2027
Official Water Supply
ESP with 10 Days QPF
Ensemble:
2026-09-20
Issued:
2026-09-20
Hide Forecast
Forecast
Period
Forecasts Are in KAF
30 Year
Average
(1991-2020)
90 %
50 %
%
Average
10 %
APR-SEP
4216
5539
98
7821
5634
APR-JUL
3853
5117
98
7235
5237
APR-AUG
4069
5363
98
7619
5473
JAN-SEP
4538
6159
99
8328
6244
JAN-JUL
4179
5589
96
7763
5847
OCT-SEP
5028
6826
99
9431
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|2026-09-20
CFMM8W_SQIN.ESPF10.csv|2026-09-20
CFMM8W_SQIN.ESPFM.csv|2026-09-20
APR-SEP
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