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Water Year
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MF FLATHEAD - NEAR WEST GLACIER
(
WGCM8
)
Forecasts for Water Year
2026
Official Water Supply
ESP with 10 Days QPF
Ensemble:
2026-08-15
Issued:
2026-08-15
Hide Forecast
Forecast
Period
Forecasts Are in KAF
30 Year
Average
(1991-2020)
90 %
50 %
%
Average
10 %
APR-SEP
1661
1661
98
1664
1697
APR-JUL
1551
1551
98
1551
1576
APR-AUG
1616
1616
98
1616
1651
JAN-SEP
2096
2096
112
2099
1865
JAN-JUL
1986
1986
114
1986
1744
OCT-SEP
2544
2544
123
2547
2065
Experimental Water Supply
HEFS with 15 days EQPF
Ensemble:
2026-08-15
Issued:
2026-08-15
Hide Forecast
APR-SEP
1661
1661
98
1666
1697
APR-JUL
1551
1551
98
1551
1576
APR-AUG
1616
1616
98
1616
1651
JAN-SEP
2096
2096
112
2101
1865
JAN-JUL
1986
1986
114
1986
1744
OCT-SEP
2544
2544
123
2548
2065
Reference
ESP with 0 Days QPF
Ensemble:
2026-08-15
Issued:
2026-08-15
Hide Forecast
APR-SEP
1661
1661
98
1672
1697
APR-JUL
1551
1551
98
1551
1576
APR-AUG
1616
1616
98
1616
1651
JAN-SEP
2096
2096
112
2107
1865
JAN-JUL
1986
1986
114
1986
1744
OCT-SEP
2544
2544
123
2555
2065
Move the mouse over the desired "Forecast Period" to display a graph.
ESP10, 190, 258, 335, 399, 435, 70, , 74
ESP10, 187, 254, 332, 394, 429, 72, , 76
ESP10, 188, 253, 333, 394, 433, 74, , 78
ESP10, 189, 252, 332, 393, 433, 76, , 80
ESP10, 191, 251, 334, 392, 432, 78, , 82
ESP10, 181, 240, 325, 381, 427, 81, , 85
ESP10, 190, 247, 333, 389, 436, 83, , 87
ESP10, 193, 248, 333, 389, 437, 85, , 89
ESP10, 196, 248, 335, 390, 443, 87, , 91
ESP10, 194, 246, 329, 386, 437, 89, , 93
ESP10, 195, 244, 326, 382, 435, 91, , 95
ESP10, 207, 251, 338, 392, 444, 93, , 97
ESP10, 209, 252, 339, 391, 446, 95, , 99
ESP10, 209, 251, 338, 390, 445, 97, , 101
ESP10, 204, 247, 332, 384, 439, 99, , 103
ESP10, 199, 241, 323, 374, 428, 102, , 106
ESP10, 191, 234, 313, 366, 421, 104, , 108
ESP10, 201, 242, 321, 375, 429, 106, , 110
ESP10, 194, 234, 313, 370, 420, 108, , 112
ESP10, 195, 237, 315, 378, 421, 110, , 114
ESP10, 182, 234, 302, 366, 408, 112, , 116
ESP10, 190, 241, 309, 374, 413, 114, , 118
ESP10, 181, 234, 299, 367, 407, 116, , 120
ESP10, 192, 241, 316, 380, 416, 118, , 122
ESP10, 192, 247, 311, 379, 422, 120, , 124
ESP10, 191, 246, 313, 378, 427, 122, , 126
ESP10, 197, 247, 318, 377, 431, 125, , 129
ESP10, 203, 248, 321, 379, 441, 127, , 131
ESP10, 206, 242, 315, 371, 435, 129, , 133
ESP10, 193, 235, 296, 352, 417, 131, , 135
ESP10, 204, 246, 307, 364, 427, 133, , 137
ESP10, 209, 246, 307, 370, 430, 135, , 139
ESP10, 192, 229, 291, 353, 415, 137, , 141
ESP10, 208, 244, 306, 369, 431, 139, , 143
ESP10, 209, 246, 305, 369, 430, 141, , 145
ESP10, 211, 248, 307, 374, 437, 143, , 147
ESP10, 212, 247, 306, 374, 437, 145, , 149
ESP10, 195, 232, 293, 358, 421, 148, , 152
ESP10, 201, 241, 306, 370, 426, 150, , 154
ESP10, 201, 246, 309, 368, 425, 152, , 156
ESP10, 203, 248, 318, 372, 430, 154, , 158
ESP10, 223, 265, 339, 390, 446, 156, , 160
ESP10, 225, 265, 336, 388, 443, 158, , 162
ESP10, 230, 272, 345, 391, 444, 160, , 164
ESP10, 219, 256, 330, 376, 429, 162, , 166
ESP10, 236, 274, 345, 392, 449, 164, , 168
ESP10, 222, 259, 329, 378, 435, 166, , 170
ESP10, 241, 273, 342, 392, 448, 169, , 173
ESP10, 234, 263, 334, 387, 441, 171, , 175
ESP10, 239, 269, 343, 395, 448, 173, , 177
ESP10, 230, 264, 338, 390, 440, 175, , 179
ESP10, 237, 272, 343, 393, 446, 177, , 181
ESP10, 231, 264, 338, 383, 435, 179, , 183
ESP10, 235, 268, 346, 387, 439, 181, , 185
ESP10, 236, 266, 340, 381, 436, 183, , 187
ESP10, 238, 263, 338, 379, 435, 185, , 189
ESP10, 234, 260, 333, 374, 433, 187, , 191
ESP10, 230, 262, 329, 372, 429, 189, , 193
ESP10, 236, 270, 334, 378, 433, 192, , 196
ESP10, 225, 257, 322, 372, 421, 194, , 198
ESP10, 211, 245, 304, 358, 406, 196, , 200
ESP10, 225, 256, 315, 369, 418, 198, , 202
ESP10, 201, 231, 292, 346, 395, 200, , 204
ESP10, 183, 211, 276, 329, 379, 202, , 206
ESP10, 192, 220, 285, 341, 386, 204, , 208
ESP10, 194, 224, 293, 342, 389, 206, , 210
ESP10, 201, 234, 305, 350, 400, 208, , 212
ESP10, 190, 224, 294, 340, 390, 210, , 214
ESP10, 163, 191, 262, 309, 361, 212, , 216
ESP10, 159, 184, 252, 299, 356, 215, , 219
ESP10, 157, 182, 247, 297, 354, 217, , 221
ESP10, 177, 206, 265, 316, 381, 219, , 223
ESP10, 193, 226, 281, 333, 396, 221, , 225
ESP10, 185, 214, 269, 323, 392, 223, , 227
ESP10, 199, 227, 285, 338, 408, 225, , 229
ESP10, 198, 225, 290, 339, 406, 227, , 231
ESP10, 222, 249, 315, 361, 425, 229, , 233
ESP10, 221, 251, 313, 360, 425, 231, , 235
ESP10, 232, 263, 322, 368, 431, 233, , 237
ESP10, 232, 276, 324, 370, 433, 236, , 240
ESP10, 238, 287, 329, 376, 438, 238, , 242
ESP10, 240, 286, 329, 376, 436, 240, , 244
ESP10, 245, 290, 342, 382, 440, 242, , 246
ESP10, 247, 287, 341, 379, 439, 244, , 248
ESP10, 239, 274, 329, 366, 428, 246, , 250
ESP10, 241, 276, 332, 371, 435, 248, , 252
ESP10, 239, 276, 330, 375, 432, 250, , 254
ESP10, 245, 286, 340, 385, 440, 252, , 256
ESP10, 250, 295, 347, 386, 442, 254, , 258
ESP10, 256, 297, 351, 392, 446, 256, , 260
ESP10, 271, 317, 364, 403, 456, 259, , 263
ESP10, 270, 313, 361, 402, 453, 261, , 265
ESP10, 274, 310, 357, 399, 451, 263, , 267
ESP10, 276, 313, 359, 401, 455, 265, , 269
ESP10, 275, 309, 361, 397, 449, 267, , 271
ESP10, 272, 313, 362, 400, 447, 269, , 273
ESP10, 274, 319, 364, 401, 449, 271, , 275
ESP10, 283, 323, 369, 404, 455, 273, , 277
ESP10, 285, 326, 371, 406, 456, 275, , 279
ESP10, 288, 327, 372, 407, 458, 277, , 281
ESP10, 289, 329, 376, 412, 459, 279, , 283
ESP10, 291, 331, 378, 413, 459, 282, , 286
ESP10, 293, 331, 378, 414, 459, 284, , 288
ESP10, 287, 326, 375, 410, 457, 286, , 290
ESP10, 289, 327, 376, 410, 468, 288, , 292
ESP10, 291, 332, 375, 408, 466, 290, , 294
ESP10, 294, 338, 377, 409, 467, 292, , 296
ESP10, 298, 340, 381, 416, 470, 294, , 298
ESP10, 295, 339, 381, 415, 469, 296, , 300
ESP10, 305, 349, 389, 424, 476, 298, , 302
ESP10, 307, 353, 389, 423, 475, 300, , 304
ESP10, 308, 355, 392, 424, 476, 303, , 307
ESP10, 307, 356, 392, 423, 475, 305, , 309
ESP10, 310, 361, 395, 426, 479, 307, , 311
ESP10, 310, 363, 397, 427, 483, 309, , 313
ESP10, 313, 366, 398, 428, 483, 311, , 315
ESP10, 315, 366, 399, 431, 484, 313, , 317
ESP10, 319, 371, 402, 434, 486, 315, , 319
ESP10, 322, 371, 400, 433, 484, 317, , 321
ESP10, 322, 372, 405, 433, 483, 319, , 323
ESP10, 326, 375, 405, 434, 484, 321, , 325
ESP10, 325, 369, 400, 429, 479, 323, , 327
ESP10, 323, 366, 400, 428, 476, 326, , 330
ESP10, 322, 366, 400, 428, 476, 328, , 332
ESP10, 330, 374, 405, 434, 487, 330, , 334
ESP10, 327, 373, 401, 431, 484, 332, , 336
ESP10, 321, 365, 395, 426, 479, 334, , 338
ESP10, 327, 366, 397, 427, 478, 336, , 340
ESP10, 326, 361, 393, 422, 472, 338, , 342
ESP10, 338, 373, 405, 433, 483, 340, , 344
ESP10, 343, 380, 411, 440, 491, 342, , 346
ESP10, 345, 380, 411, 443, 492, 344, , 348
ESP10, 342, 376, 407, 439, 488, 346, , 350
ESP10, 345, 379, 409, 439, 491, 349, , 353
ESP10, 339, 375, 406, 436, 486, 351, , 355
ESP10, 337, 371, 407, 434, 483, 353, , 357
ESP10, 334, 369, 410, 434, 480, 355, , 359
ESP10, 337, 372, 415, 440, 484, 357, , 361
ESP10, 329, 365, 408, 433, 475, 359, , 363
ESP10, 337, 370, 412, 438, 479, 361, , 365
ESP10, 336, 366, 406, 438, 478, 363, , 367
ESP10, 338, 363, 405, 435, 476, 365, , 369
ESP10, 328, 353, 400, 426, 466, 367, , 371
ESP10, 329, 355, 402, 426, 466, 370, , 374
ESP10, 338, 361, 408, 435, 470, 372, , 376
ESP10, 351, 371, 419, 443, 479, 374, , 378
ESP10, 357, 375, 420, 446, 480, 376, , 380
ESP10, 355, 375, 421, 446, 479, 378, , 382
ESP10, 354, 374, 419, 445, 477, 380, , 384
ESP10, 349, 371, 412, 439, 467, 382, , 386
ESP10, 362, 379, 419, 447, 473, 384, , 388
ESP10, 356, 375, 415, 441, 465, 386, , 390
ESP10, 358, 380, 416, 444, 468, 388, , 392
ESP10, 352, 374, 411, 439, 460, 390, , 394
ESP10, 349, 371, 409, 436, 461, 393, , 397
ESP10, 349, 371, 406, 434, 459, 395, , 399
ESP10, 341, 363, 398, 427, 450, 397, , 401
ESP10, 342, 366, 398, 431, 451, 399, , 403
ESP10, 332, 357, 392, 422, 441, 401, , 405
ESP10, 345, 371, 408, 434, 454, 403, , 407
ESP10, 357, 383, 419, 445, 467, 405, , 409
ESP10, 361, 388, 421, 449, 469, 407, , 411
ESP10, 360, 390, 422, 448, 471, 409, , 413
ESP10, 364, 396, 426, 453, 475, 411, , 415
ESP10, 360, 392, 422, 450, 471, 413, , 417
ESP10, 353, 386, 420, 444, 467, 416, , 420
ESP10, 345, 378, 415, 438, 461, 418, , 422
ESP10, 345, 384, 416, 439, 463, 420, , 424
ESP10, 340, 377, 409, 433, 457, 422, , 426
ESP10, 337, 372, 406, 427, 452, 424, , 428
ESP10, 333, 365, 400, 422, 445, 426, , 430
ESP10, 318, 349, 385, 405, 431, 428, , 432
ESP10, 320, 354, 387, 409, 433, 430, , 434
ESP10, 313, 346, 378, 401, 425, 432, , 436
ESP10, 311, 346, 377, 401, 423, 434, , 438
ESP10, 312, 345, 376, 401, 424, 437, , 441
ESP10, 306, 336, 368, 397, 415, 439, , 443
ESP10, 312, 341, 380, 402, 419, 441, , 445
ESP10, 313, 341, 379, 404, 420, 443, , 447
ESP10, 317, 346, 382, 408, 423, 445, , 449
ESP10, 320, 347, 381, 409, 423, 447, , 451
ESP10, 317, 347, 378, 407, 422, 449, , 453
ESP10, 315, 344, 375, 404, 421, 451, , 455
ESP10, 326, 358, 389, 414, 432, 453, , 457
ESP10, 326, 357, 400, 414, 432, 455, , 459
ESP10, 322, 352, 397, 410, 427, 457, , 461
ESP10, 323, 352, 396, 410, 429, 460, , 464
ESP10, 330, 361, 403, 419, 439, 462, , 466
ESP10, 325, 359, 398, 416, 435, 464, , 468
ESP10, 321, 353, 390, 411, 427, 466, , 470
ESP10, 318, 355, 386, 410, 427, 468, , 472
ESP10, 323, 359, 390, 414, 430, 470, , 474
ESP10, 324, 360, 390, 415, 433, 472, , 476
ESP10, 315, 349, 379, 405, 422, 474, , 478
ESP10, 319, 358, 381, 406, 424, 476, , 480
ESP10, 320, 362, 391, 409, 425, 478, , 482
ESP10, 305, 346, 374, 393, 409, 480, , 484
ESP10, 329, 364, 394, 410, 426, 483, , 487
ESP10, 334, 363, 394, 410, 427, 485, , 489
ESP10, 339, 366, 399, 414, 431, 487, , 491
ESP10, 339, 365, 400, 418, 431, 489, , 493
ESP10, 339, 361, 396, 416, 427, 491, , 495
ESP10, 340, 361, 401, 416, 426, 493, , 497
ESP10, 318, 342, 380, 396, 406, 495, , 499
ESP10, 313, 340, 374, 391, 402, 497, , 501
ESP10, 311, 341, 372, 390, 402, 499, , 503
ESP10, 311, 338, 373, 388, 401, 501, , 505
ESP10, 315, 342, 375, 391, 403, 504, , 508
ESP10, 315, 341, 375, 391, 402, 506, , 510
ESP10, 314, 348, 375, 391, 400, 508, , 512
ESP10, 314, 348, 375, 392, 405, 510, , 514
ESP10, 317, 350, 381, 396, 408, 512, , 516
ESP10, 350, 384, 415, 434, 442, 514, , 518
ESP10, 352, 385, 413, 433, 442, 516, , 520
ESP10, 346, 376, 405, 426, 434, 518, , 522
ESP10, 346, 375, 405, 426, 436, 520, , 524
ESP10, 344, 372, 405, 425, 435, 522, , 526
ESP10, 341, 370, 403, 423, 432, 524, , 528
ESP10, 339, 363, 395, 415, 424, 527, , 531
ESP10, 338, 364, 397, 414, 425, 529, , 533
ESP10, 341, 363, 398, 413, 423, 531, , 535
ESP10, 343, 364, 398, 411, 423, 533, , 537
ESP10, 341, 361, 391, 406, 419, 535, , 539
ESP10, 344, 365, 398, 409, 422, 537, , 541
ESP10, 326, 347, 381, 397, 405, 539, , 543
ESP10, 334, 356, 389, 405, 411, 541, , 545
ESP10, 328, 354, 382, 397, 406, 543, , 547
ESP10, 321, 349, 377, 393, 399, 545, , 549
ESP10, 324, 356, 383, 395, 402, 547, , 551
ESP10, 327, 360, 388, 396, 403, 550, , 554
ESP10, 320, 357, 382, 391, 397, 552, , 556
ESP10, 318, 356, 381, 389, 393, 554, , 558
ESP10, 321, 355, 377, 385, 389, 556, , 560
ESP10, 312, 347, 369, 375, 382, 558, , 562
ESP10, 318, 351, 373, 379, 385, 560, , 564
ESP10, 318, 351, 371, 377, 384, 562, , 566
ESP10, 310, 345, 364, 372, 376, 564, , 568
ESP10, 336, 370, 390, 394, 400, 566, , 570
ESP10, 342, 359, 377, 383, 387, 568, , 572
ESP10, 329, 346, 365, 373, 376, 571, , 575
ESP10, 341, 360, 376, 385, 389, 573, , 577
ESP10, 344, 363, 378, 388, 392, 575, , 579
ESP10, 338, 357, 369, 379, 385, 577, , 581
ESP10, 331, 352, 365, 375, 380, 579, , 583
ESP10, 329, 349, 366, 373, 378, 581, , 585
ESP10, 318, 337, 351, 358, 361, 583, , 587
ESP10, 328, 345, 357, 363, 368, 585, , 589
ESP10, 330, 348, 361, 368, 373, 587, , 591
ESP10, 350, 366, 377, 384, 387, 589, , 593
ESP10, 354, 362, 372, 380, 383, 591, , 595
ESP10, 353, 363, 372, 379, 382, 594, , 598
ESP10, 362, 369, 375, 380, 382, 596, , 600
ESP10, 364, 373, 377, 382, 383, 598, , 602
ESP10, 362, 371, 376, 380, 382, 600, , 604
ESP10, 369, 377, 382, 385, 387, 602, , 606
ESP10, 372, 378, 383, 386, 388, 604, , 608
ESP10, 374, 379, 384, 386, 389, 606, , 610
ESP10, 375, 379, 384, 387, 389, 608, , 612
ESP10, 372, 378, 383, 385, 386, 610, , 614
ESP10, 375, 380, 385, 387, 388, 612, , 616
ESP10, 373, 379, 383, 385, 386, 614, , 618
ESP10, 372, 378, 382, 383, 384, 617, , 621
ESP10, 371, 377, 381, 383, 384, 619, , 623
ESP10, 366, 372, 376, 378, 378, 621, , 625
ESP10, 368, 374, 376, 378, 378, 623, , 627
ESP10, 370, 377, 379, 380, 380, 625, , 629
ESP10, 367, 374, 376, 377, 377, 627, , 631
ESP10, 362, 369, 371, 371, 371, 629, , 633
ESP10, 354, 361, 363, 363, 363, 631, , 635
ESP10, 346, 352, 353, 353, 353, 633, , 637
ESP10, 350, 355, 356, 356, 356, 635, , 639
ESP10, 353, 358, 360, 360, 360, 638, , 642
ESP10, 352, 358, 359, 359, 359, 640, , 644
ESP10, 350, 355, 356, 356, 356, 642, , 646
ESP10, 349, 354, 356, 356, 356, 644, , 648
ESP10, 343, 349, 350, 350, 350, 646, , 650
ESP10, 344, 348, 350, 350, 350, 648, , 652
ESP10, 345, 348, 349, 349, 349, 650, , 654
ESP10, 345, 348, 349, 349, 349, 652, , 656
ESP10, 345, 348, 349, 349, 349, 654, , 658
ESP10, 345, 347, 348, 348, 348, 656, , 660
ESP10, 346, 347, 348, 348, 348, 658, , 662
ESP10, 343, 345, 347, 347, 347, 661, , 665
ESP10, 344, 346, 347, 347, 347, 663, , 667
ESP10, 343, 346, 347, 347, 347, 665, , 669
ESP10, 342, 346, 346, 346, 346, 667, , 671
ESP10, 344, 346, 347, 347, 347, 669, , 673
ESP10, 344, 346, 347, 347, 347, 671, , 675
ESP10, 344, 346, 346, 346, 346, 673, , 677
ESP10, 344, 346, 346, 346, 346, 675, , 679
ESP10, 343, 346, 346, 346, 346, 677, , 681
ESP10, 344, 346, 346, 346, 346, 679, , 683
ESP10, 344, 346, 346, 346, 346, 681, , 685
ESP10, 344, 346, 346, 346, 346, 684, , 688
ESP10, 344, 346, 347, 347, 347, 686, , 690
ESP10, 344, 346, 347, 347, 347, 688, , 692
ESP10, 344, 346, 347, 347, 347, 690, , 694
ESP10, 344, 347, 347, 347, 347, 692, , 696
ESP10, 345, 347, 347, 347, 347, 694, , 698
ESP10, 346, 348, 348, 348, 348, 696, , 700
ESP10, 346, 348, 348, 348, 348, 698, , 702
ESP10, 347, 348, 348, 348, 348, 700, , 704
ESP10, 347, 348, 348, 348, 348, 702, , 706
ESP10, 347, 348, 348, 348, 348, 705, , 709
ESP10, 347, 349, 349, 349, 349, 707, , 711
ESP10, 348, 349, 349, 349, 349, 709, , 713
ESP10, 348, 349, 349, 349, 349, 711, , 715
ESP10, 348, 349, 349, 349, 349, 713, , 717
ESP10, 348, 349, 349, 349, 349, 715, , 719
ESP10, 350, 351, 351, 351, 351, 717, , 721
ESP10, 350, 351, 351, 351, 351, 719, , 723
ESP10, 349, 351, 351, 351, 351, 721, , 725
ESP10, 350, 351, 351, 351, 351, 723, , 727
ESP10, 348, 351, 351, 351, 351, 725, , 729
ESP10, 350, 351, 352, 352, 352, 728, , 732
ESP10, 351, 352, 352, 352, 352, 730, , 734
ESP10, 351, 352, 352, 352, 352, 732, , 736
ESP10, 350, 351, 351, 351, 351, 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/watersupply/WGCM8W_SQIN.ESPF10.csv
WGCM8W_SQIN.ESPF0.csv|2026-08-15
WGCM8W_SQIN.ESPF10.csv|2026-08-15
WGCM8W_SQIN.ESPFM.csv|2026-08-15
APR-SEP
MF FLATHEAD - NEAR WEST GLACIER
(
WGCM8
)
Forecasts for Water Year
2027
Official Water Supply
ESP with 10 Days QPF
Ensemble:
2026-08-15
Issued:
2026-08-15
Hide Forecast
Forecast
Period
Forecasts Are in KAF
30 Year
Average
(1991-2020)
90 %
50 %
%
Average
10 %
APR-SEP
1223
1772
104
2510
1697
APR-JUL
1112
1632
104
2302
1576
APR-AUG
1178
1714
104
2444
1651
JAN-SEP
1252
1875
101
2550
1865
JAN-JUL
1140
1695
97
2376
1744
OCT-SEP
1325
1987
96
2719
2065
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/WGCM8W_SQIN.ESPF10.csv
WGCM8W_SQIN.ESPF0.csv|2026-08-15
WGCM8W_SQIN.ESPF10.csv|2026-08-15
WGCM8W_SQIN.ESPFM.csv|2026-08-15
APR-SEP
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ESP10,ESPM,ESP0
ESP10,ESPM,ESP0
Last Forecast
