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Water Year
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SF FLATHEAD - HUNGRY HORSE DAM
(
HHWM8
)
Forecasts for Water Year
2026
Official Water Supply
ESP with 10 Days QPF
Ensemble:
2026-09-16
Issued:
2026-09-16
Hide Forecast
Forecast
Period
Forecasts Are in KAF
30 Year
Average
(1991-2020)
90 %
50 %
%
Average
10 %
APR-SEP
1964
1964
94
1966
2088
APR-JUL
1853
1853
94
1853
1981
APR-AUG
1905
1905
93
1905
2043
JAN-SEP
2538
2538
108
2540
2343
JAN-JUL
2428
2428
109
2428
2236
OCT-SEP
3065
3065
119
3067
2567
Experimental Water Supply
HEFS with 15 days EQPF
Ensemble:
2026-09-16
Issued:
2026-09-16
Hide Forecast
APR-SEP
1964
1965
94
1971
2088
APR-JUL
1853
1853
94
1853
1981
APR-AUG
1905
1905
93
1905
2043
JAN-SEP
2538
2539
108
2546
2343
JAN-JUL
2428
2428
109
2428
2236
OCT-SEP
3065
3066
119
3073
2567
Reference
ESP with 0 Days QPF
Ensemble:
2026-09-16
Issued:
2026-09-16
Hide Forecast
APR-SEP
1964
1968
94
1977
2088
APR-JUL
1853
1853
94
1853
1981
APR-AUG
1905
1905
93
1905
2043
JAN-SEP
2538
2542
108
2551
2343
JAN-JUL
2428
2428
109
2428
2236
OCT-SEP
3065
3069
120
3078
2567
Move the mouse over the desired "Forecast Period" to display a graph.
ESP10, 249, 296, 376, 419, 449, 70, , 74
ESP10, 249, 294, 375, 417, 448, 72, , 76
ESP10, 250, 292, 374, 415, 447, 74, , 78
ESP10, 251, 291, 374, 415, 447, 76, , 80
ESP10, 255, 291, 375, 415, 447, 78, , 82
ESP10, 253, 289, 369, 411, 444, 79, , 83
ESP10, 250, 286, 368, 408, 443, 81, , 85
ESP10, 255, 292, 374, 413, 451, 83, , 87
ESP10, 253, 292, 373, 410, 452, 85, , 89
ESP10, 251, 290, 370, 407, 450, 87, , 91
ESP10, 250, 287, 363, 402, 447, 89, , 93
ESP10, 260, 295, 371, 408, 454, 91, , 95
ESP10, 260, 296, 373, 408, 457, 93, , 97
ESP10, 259, 295, 373, 408, 457, 95, , 99
ESP10, 256, 295, 372, 406, 454, 97, , 101
ESP10, 249, 288, 370, 401, 449, 98, , 102
ESP10, 246, 285, 367, 398, 447, 100, , 104
ESP10, 244, 288, 369, 399, 446, 102, , 106
ESP10, 243, 286, 369, 399, 445, 104, , 108
ESP10, 245, 288, 373, 402, 447, 106, , 110
ESP10, 239, 281, 366, 398, 441, 108, , 112
ESP10, 248, 285, 372, 402, 445, 110, , 114
ESP10, 244, 280, 368, 399, 440, 112, , 116
ESP10, 252, 285, 373, 404, 445, 114, , 118
ESP10, 255, 288, 374, 408, 447, 116, , 120
ESP10, 247, 279, 366, 399, 440, 117, , 121
ESP10, 247, 280, 367, 399, 440, 119, , 123
ESP10, 255, 284, 372, 402, 446, 121, , 125
ESP10, 253, 282, 370, 400, 447, 123, , 127
ESP10, 243, 271, 359, 389, 438, 125, , 129
ESP10, 251, 275, 362, 393, 441, 127, , 131
ESP10, 259, 280, 364, 397, 442, 129, , 133
ESP10, 257, 283, 364, 398, 440, 131, , 135
ESP10, 259, 286, 366, 402, 441, 133, , 137
ESP10, 259, 288, 367, 403, 440, 135, , 139
ESP10, 262, 290, 369, 406, 444, 137, , 141
ESP10, 264, 289, 369, 406, 444, 138, , 142
ESP10, 260, 286, 367, 402, 441, 140, , 144
ESP10, 261, 288, 369, 403, 445, 142, , 146
ESP10, 261, 288, 370, 406, 446, 144, , 148
ESP10, 265, 292, 374, 411, 449, 146, , 150
ESP10, 266, 292, 373, 410, 449, 148, , 152
ESP10, 267, 298, 374, 412, 451, 150, , 154
ESP10, 270, 305, 377, 418, 455, 152, , 156
ESP10, 269, 302, 375, 414, 451, 154, , 158
ESP10, 268, 303, 381, 414, 449, 156, , 160
ESP10, 261, 296, 376, 407, 441, 157, , 161
ESP10, 274, 310, 388, 419, 456, 159, , 163
ESP10, 269, 305, 384, 415, 453, 161, , 165
ESP10, 268, 308, 384, 414, 452, 163, , 167
ESP10, 261, 302, 376, 407, 443, 165, , 169
ESP10, 263, 305, 377, 408, 450, 167, , 171
ESP10, 253, 294, 368, 399, 440, 169, , 173
ESP10, 264, 303, 376, 406, 449, 171, , 175
ESP10, 248, 292, 363, 395, 434, 173, , 177
ESP10, 249, 294, 364, 398, 442, 175, , 179
ESP10, 244, 292, 362, 395, 437, 176, , 180
ESP10, 245, 291, 363, 395, 436, 178, , 182
ESP10, 249, 296, 365, 400, 440, 180, , 184
ESP10, 234, 282, 353, 387, 426, 182, , 186
ESP10, 219, 273, 341, 375, 412, 184, , 188
ESP10, 223, 281, 345, 378, 415, 186, , 190
ESP10, 201, 260, 328, 362, 397, 188, , 192
ESP10, 180, 240, 312, 347, 380, 190, , 194
ESP10, 182, 242, 313, 349, 381, 192, , 196
ESP10, 181, 238, 308, 345, 378, 194, , 198
ESP10, 200, 256, 328, 359, 391, 196, , 200
ESP10, 184, 245, 316, 347, 378, 197, , 201
ESP10, 174, 230, 303, 340, 362, 199, , 203
ESP10, 178, 228, 303, 340, 364, 201, , 205
ESP10, 179, 231, 306, 342, 364, 203, , 207
ESP10, 174, 229, 303, 340, 361, 205, , 209
ESP10, 179, 236, 309, 346, 368, 207, , 211
ESP10, 181, 238, 311, 349, 372, 209, , 213
ESP10, 189, 245, 316, 357, 379, 211, , 215
ESP10, 190, 245, 316, 357, 379, 213, , 217
ESP10, 196, 252, 323, 363, 386, 215, , 219
ESP10, 199, 252, 324, 362, 386, 216, , 220
ESP10, 213, 260, 331, 368, 393, 218, , 222
ESP10, 218, 260, 334, 368, 391, 220, , 224
ESP10, 227, 267, 335, 368, 395, 222, , 226
ESP10, 231, 272, 338, 370, 396, 224, , 228
ESP10, 234, 276, 343, 374, 398, 226, , 230
ESP10, 232, 276, 340, 372, 396, 228, , 232
ESP10, 231, 272, 337, 368, 394, 230, , 234
ESP10, 229, 270, 337, 368, 392, 232, , 236
ESP10, 231, 275, 338, 370, 396, 234, , 238
ESP10, 240, 278, 339, 374, 403, 236, , 240
ESP10, 246, 278, 341, 377, 404, 237, , 241
ESP10, 248, 280, 340, 377, 403, 239, , 243
ESP10, 246, 281, 339, 376, 400, 241, , 245
ESP10, 237, 273, 332, 367, 390, 243, , 247
ESP10, 238, 273, 332, 366, 391, 245, , 249
ESP10, 242, 274, 334, 366, 395, 247, , 251
ESP10, 236, 269, 329, 361, 393, 249, , 253
ESP10, 233, 270, 326, 359, 389, 251, , 255
ESP10, 229, 271, 325, 356, 387, 253, , 257
ESP10, 232, 277, 326, 358, 386, 255, , 259
ESP10, 245, 283, 334, 369, 394, 256, , 260
ESP10, 250, 287, 336, 371, 395, 258, , 262
ESP10, 253, 292, 339, 376, 397, 260, , 264
ESP10, 254, 295, 342, 377, 396, 262, , 266
ESP10, 256, 298, 344, 380, 396, 264, , 268
ESP10, 258, 297, 341, 377, 394, 266, , 270
ESP10, 259, 301, 343, 378, 394, 268, , 272
ESP10, 258, 299, 344, 377, 391, 270, , 274
ESP10, 259, 298, 342, 375, 389, 272, , 276
ESP10, 262, 299, 342, 375, 389, 274, , 278
ESP10, 259, 296, 339, 372, 388, 275, , 279
ESP10, 276, 309, 352, 384, 404, 277, , 281
ESP10, 275, 308, 354, 387, 405, 279, , 283
ESP10, 278, 310, 357, 390, 408, 281, , 285
ESP10, 277, 309, 358, 389, 406, 283, , 287
ESP10, 283, 315, 363, 396, 411, 285, , 289
ESP10, 280, 316, 362, 396, 410, 287, , 291
ESP10, 281, 322, 363, 397, 410, 289, , 293
ESP10, 282, 325, 364, 398, 411, 291, , 295
ESP10, 279, 325, 358, 392, 409, 293, , 297
ESP10, 279, 329, 356, 390, 412, 295, , 299
ESP10, 281, 328, 356, 389, 412, 296, , 300
ESP10, 285, 328, 359, 391, 413, 298, , 302
ESP10, 284, 322, 358, 387, 408, 300, , 304
ESP10, 287, 324, 361, 389, 411, 302, , 306
ESP10, 290, 328, 362, 389, 412, 304, , 308
ESP10, 296, 334, 368, 396, 414, 306, , 310
ESP10, 297, 337, 366, 395, 412, 308, , 312
ESP10, 299, 338, 364, 394, 413, 310, , 314
ESP10, 299, 337, 363, 393, 411, 312, , 316
ESP10, 296, 332, 360, 391, 406, 314, , 318
ESP10, 302, 335, 363, 397, 412, 315, , 319
ESP10, 301, 334, 360, 397, 411, 317, , 321
ESP10, 305, 335, 360, 398, 415, 319, , 323
ESP10, 302, 333, 363, 396, 413, 321, , 325
ESP10, 303, 334, 366, 394, 414, 323, , 327
ESP10, 301, 329, 363, 390, 413, 325, , 329
ESP10, 296, 325, 361, 391, 413, 327, , 331
ESP10, 296, 324, 360, 391, 413, 329, , 333
ESP10, 301, 326, 362, 397, 416, 331, , 335
ESP10, 300, 321, 358, 393, 413, 333, , 337
ESP10, 305, 322, 359, 394, 417, 334, , 338
ESP10, 303, 319, 358, 392, 413, 336, , 340
ESP10, 306, 321, 361, 393, 412, 338, , 342
ESP10, 303, 323, 360, 388, 407, 340, , 344
ESP10, 303, 326, 359, 387, 406, 342, , 346
ESP10, 305, 330, 360, 389, 406, 344, , 348
ESP10, 310, 336, 366, 393, 410, 346, , 350
ESP10, 313, 343, 370, 397, 414, 348, , 352
ESP10, 311, 342, 368, 395, 413, 350, , 354
ESP10, 306, 340, 367, 391, 409, 352, , 356
ESP10, 294, 333, 358, 382, 398, 354, , 358
ESP10, 300, 341, 364, 391, 404, 355, , 359
ESP10, 298, 339, 361, 391, 401, 357, , 361
ESP10, 291, 331, 354, 383, 395, 359, , 363
ESP10, 283, 324, 348, 378, 385, 361, , 365
ESP10, 281, 321, 343, 374, 379, 363, , 367
ESP10, 277, 313, 337, 366, 371, 365, , 369
ESP10, 269, 305, 329, 355, 364, 367, , 371
ESP10, 276, 312, 334, 361, 371, 369, , 373
ESP10, 262, 295, 319, 345, 357, 371, , 375
ESP10, 276, 309, 334, 357, 369, 373, , 377
ESP10, 288, 317, 343, 365, 377, 374, , 378
ESP10, 287, 317, 342, 364, 376, 376, , 380
ESP10, 293, 325, 349, 372, 383, 378, , 382
ESP10, 292, 326, 348, 371, 385, 380, , 384
ESP10, 289, 324, 346, 370, 386, 382, , 386
ESP10, 283, 319, 339, 363, 380, 384, , 388
ESP10, 279, 315, 334, 360, 377, 386, , 390
ESP10, 283, 319, 338, 365, 382, 388, , 392
ESP10, 288, 320, 341, 367, 387, 390, , 394
ESP10, 290, 323, 344, 368, 391, 392, , 396
ESP10, 291, 323, 347, 367, 390, 393, , 397
ESP10, 291, 326, 350, 369, 395, 395, , 399
ESP10, 298, 330, 355, 372, 401, 397, , 401
ESP10, 290, 320, 348, 361, 394, 399, , 403
ESP10, 296, 321, 351, 362, 396, 401, , 405
ESP10, 301, 321, 351, 359, 395, 403, , 407
ESP10, 298, 317, 349, 357, 391, 405, , 409
ESP10, 301, 320, 354, 361, 394, 407, , 411
ESP10, 299, 319, 352, 360, 392, 409, , 413
ESP10, 294, 314, 347, 359, 386, 411, , 415
ESP10, 294, 312, 345, 360, 384, 413, , 417
ESP10, 298, 317, 348, 363, 389, 414, , 418
ESP10, 296, 315, 347, 362, 387, 416, , 420
ESP10, 301, 323, 353, 371, 392, 418, , 422
ESP10, 302, 329, 354, 371, 394, 420, , 424
ESP10, 299, 326, 349, 368, 391, 422, , 426
ESP10, 300, 325, 350, 367, 390, 424, , 428
ESP10, 297, 324, 348, 366, 388, 426, , 430
ESP10, 294, 321, 349, 364, 386, 428, , 432
ESP10, 297, 318, 342, 359, 379, 430, , 434
ESP10, 297, 317, 340, 357, 377, 432, , 436
ESP10, 299, 320, 344, 361, 379, 433, , 437
ESP10, 322, 342, 368, 385, 402, 435, , 439
ESP10, 320, 340, 367, 382, 401, 437, , 441
ESP10, 321, 338, 366, 382, 400, 439, , 443
ESP10, 323, 339, 368, 383, 399, 441, , 445
ESP10, 314, 331, 359, 376, 391, 443, , 447
ESP10, 322, 343, 366, 382, 398, 445, , 449
ESP10, 320, 343, 369, 381, 398, 447, , 451
ESP10, 325, 350, 372, 384, 402, 449, , 453
ESP10, 326, 348, 370, 383, 399, 451, , 455
ESP10, 327, 350, 370, 386, 401, 452, , 456
ESP10, 327, 350, 371, 386, 401, 454, , 458
ESP10, 336, 361, 383, 398, 411, 456, , 460
ESP10, 327, 352, 376, 390, 403, 458, , 462
ESP10, 326, 352, 374, 392, 404, 460, , 464
ESP10, 321, 347, 371, 386, 400, 462, , 466
ESP10, 319, 342, 366, 380, 394, 464, , 468
ESP10, 320, 341, 367, 381, 393, 466, , 470
ESP10, 321, 345, 369, 383, 394, 468, , 472
ESP10, 323, 349, 370, 386, 399, 470, , 474
ESP10, 325, 351, 375, 390, 403, 472, , 476
ESP10, 327, 354, 378, 393, 405, 473, , 477
ESP10, 327, 355, 377, 393, 407, 475, , 479
ESP10, 329, 355, 376, 392, 407, 477, , 481
ESP10, 326, 354, 374, 390, 404, 479, , 483
ESP10, 324, 354, 371, 388, 402, 481, , 485
ESP10, 323, 353, 369, 386, 399, 483, , 487
ESP10, 322, 348, 367, 384, 396, 485, , 489
ESP10, 323, 347, 370, 385, 397, 487, , 491
ESP10, 325, 347, 371, 384, 396, 489, , 493
ESP10, 325, 347, 372, 383, 396, 491, , 495
ESP10, 328, 345, 369, 378, 388, 492, , 496
ESP10, 335, 347, 372, 382, 391, 494, , 498
ESP10, 322, 333, 359, 372, 380, 496, , 500
ESP10, 325, 338, 365, 377, 384, 498, , 502
ESP10, 321, 335, 358, 371, 380, 500, , 504
ESP10, 319, 335, 356, 367, 380, 502, , 506
ESP10, 321, 336, 357, 366, 379, 504, , 508
ESP10, 321, 338, 357, 370, 379, 506, , 510
ESP10, 316, 334, 350, 364, 373, 508, , 512
ESP10, 315, 333, 350, 362, 371, 510, , 514
ESP10, 317, 333, 351, 361, 370, 511, , 515
ESP10, 307, 325, 343, 349, 358, 513, , 517
ESP10, 316, 329, 347, 355, 362, 515, , 519
ESP10, 317, 334, 349, 358, 362, 517, , 521
ESP10, 314, 330, 346, 354, 358, 519, , 523
ESP10, 336, 350, 366, 373, 379, 521, , 525
ESP10, 302, 318, 331, 343, 348, 523, , 527
ESP10, 298, 313, 326, 338, 344, 525, , 529
ESP10, 311, 326, 336, 348, 356, 527, , 531
ESP10, 311, 330, 342, 350, 358, 529, , 533
ESP10, 309, 327, 340, 349, 354, 531, , 535
ESP10, 305, 325, 336, 346, 350, 532, , 536
ESP10, 306, 325, 337, 346, 349, 534, , 538
ESP10, 294, 312, 322, 330, 334, 536, , 540
ESP10, 302, 319, 329, 337, 340, 538, , 542
ESP10, 305, 320, 330, 338, 342, 540, , 544
ESP10, 326, 341, 349, 357, 360, 542, , 546
ESP10, 325, 336, 346, 352, 356, 544, , 548
ESP10, 327, 336, 348, 352, 356, 546, , 550
ESP10, 334, 343, 351, 355, 356, 548, , 552
ESP10, 337, 347, 353, 356, 357, 550, , 554
ESP10, 335, 346, 353, 355, 357, 551, , 555
ESP10, 335, 346, 353, 355, 356, 553, , 557
ESP10, 338, 349, 354, 356, 358, 555, , 559
ESP10, 338, 349, 354, 356, 358, 557, , 561
ESP10, 339, 350, 354, 356, 357, 559, , 563
ESP10, 335, 349, 352, 354, 355, 561, , 565
ESP10, 341, 351, 354, 356, 357, 563, , 567
ESP10, 344, 350, 354, 355, 356, 565, , 569
ESP10, 346, 350, 353, 354, 354, 567, , 571
ESP10, 345, 350, 352, 353, 353, 569, , 573
ESP10, 341, 347, 348, 349, 350, 571, , 575
ESP10, 339, 345, 346, 347, 347, 572, , 576
ESP10, 341, 346, 347, 348, 348, 574, , 578
ESP10, 334, 339, 339, 340, 341, 576, , 580
ESP10, 330, 335, 335, 336, 337, 578, , 582
ESP10, 325, 329, 330, 331, 331, 580, , 584
ESP10, 315, 319, 320, 322, 322, 582, , 586
ESP10, 320, 324, 325, 326, 326, 584, , 588
ESP10, 334, 337, 338, 339, 339, 586, , 590
ESP10, 332, 335, 336, 337, 337, 588, , 592
ESP10, 329, 333, 334, 335, 335, 590, , 594
ESP10, 330, 332, 333, 334, 335, 591, , 595
ESP10, 327, 330, 331, 332, 332, 593, , 597
ESP10, 326, 329, 330, 331, 331, 595, , 599
ESP10, 326, 329, 330, 331, 331, 597, , 601
ESP10, 326, 329, 330, 331, 331, 599, , 603
ESP10, 326, 328, 330, 330, 331, 601, , 605
ESP10, 327, 328, 330, 330, 331, 603, , 607
ESP10, 327, 328, 329, 330, 331, 605, , 609
ESP10, 325, 328, 329, 329, 330, 607, , 611
ESP10, 326, 328, 329, 329, 330, 609, , 613
ESP10, 326, 328, 329, 329, 330, 610, , 614
ESP10, 326, 327, 329, 329, 330, 612, , 616
ESP10, 326, 328, 329, 329, 330, 614, , 618
ESP10, 326, 328, 329, 329, 330, 616, , 620
ESP10, 326, 328, 329, 329, 330, 618, , 622
ESP10, 326, 327, 329, 329, 330, 620, , 624
ESP10, 326, 327, 329, 329, 330, 622, , 626
ESP10, 326, 328, 329, 329, 330, 624, , 628
ESP10, 326, 328, 329, 329, 330, 626, , 630
ESP10, 326, 328, 329, 329, 330, 628, , 632
ESP10, 326, 328, 329, 330, 330, 630, , 634
ESP10, 326, 328, 329, 330, 330, 631, , 635
ESP10, 326, 328, 329, 330, 330, 633, , 637
ESP10, 326, 328, 329, 330, 330, 635, , 639
ESP10, 327, 328, 329, 330, 330, 637, , 641
ESP10, 327, 328, 329, 330, 330, 639, , 643
ESP10, 327, 328, 330, 330, 330, 641, , 645
ESP10, 327, 328, 330, 330, 330, 643, , 647
ESP10, 327, 328, 330, 330, 330, 645, , 649
ESP10, 327, 329, 330, 330, 331, 647, , 651
ESP10, 327, 329, 330, 330, 331, 649, , 653
ESP10, 328, 329, 330, 331, 331, 650, , 654
ESP10, 328, 329, 330, 331, 331, 652, , 656
ESP10, 328, 329, 330, 331, 331, 654, , 658
ESP10, 328, 329, 331, 331, 331, 656, , 660
ESP10, 331, 332, 333, 333, 333, 658, , 662
ESP10, 331, 332, 333, 333, 333, 660, , 664
ESP10, 331, 332, 333, 333, 333, 662, , 666
ESP10, 331, 332, 333, 333, 333, 664, , 668
ESP10, 330, 332, 333, 333, 333, 666, , 670
ESP10, 331, 332, 333, 333, 333, 668, , 672
ESP10, 332, 332, 333, 333, 333, 669, , 673
ESP10, 332, 332, 333, 333, 333, 671, , 675
ESP10, 332, 332, 332, 333, 333, 673, , 677
ESP10, 332, 332, 332, 332, 332, 675, , 679
ESP10, 331, 332, 332, 332, 332, 677, , 681
ESP10, 331, 332, 332, 332, 332, 679, , 683
ESP10, 331, 332, 332, 332, 332, 681, , 685
ESP10, 331, 332, 332, 332, 332, 683, , 687
ESP10, 331, 332, 332, 332, 332, 685, , 689
ESP10, 331, 332, 332, 332, 332, 687, , 691
ESP10, 331, 332, 332, 332, 332, 689, , 693
ESP10, 331, 332, 332, 332, 332, 690, , 694
ESP10, 330, 331, 331, 332, 332, 692, , 696
ESP10, 330, 331, 331, 332, 332, 694, , 698
ESP10, 330, 331, 332, 332, 332, 696, , 700
ESP10, 329, 331, 331, 332, 332, 698, , 702
ESP10, 330, 331, 332, 332, 332, 700, , 704
ESP10, 330, 331, 331, 332, 332, 702, , 706
ESP10, 330, 331, 332, 332, 332, 704, , 708
ESP10, 330, 331, 331, 332, 332, 706, , 710
ESP10, 330, 331, 331, 332, 332, 708, , 712
ESP10, 329, 329, 330, 331, 331, 709, , 713
ESP10, 328, 328, 329, 330, 330, 711, , 715
ESP10, 327, 328, 329, 329, 330, 713, , 717
ESP10, 325, 326, 327, 328, 328, 715, , 719
ESP10, 323, 325, 326, 327, 327, 717, , 721
ESP10, 325, 326, 327, 327, 327, 719, , 723
ESP10, 326, 327, 328, 328, 328, 721, , 725
ESP10, 325, 326, 327, 327, 327, 723, , 727
ESP10, 326, 327, 327, 327, 327, 725, , 729
ESP10, 327, 328, 328, 328, 328, 727, , 731
ESP10, 327, 328, 328, 328, 328, 728, , 732
ESP10, 327, 328, 328, 328, 328, 730, , 734
ESP10, 328, 328, 328, 328, 328, 732, , 736
ESP10, 328, 328, 328, 328, 328, 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/HHWM8W_SQIN.ESPF10.csv
HHWM8W_SQIN.ESPF0.csv|2026-09-16
HHWM8W_SQIN.ESPF10.csv|2026-09-16
HHWM8W_SQIN.ESPFM.csv|2026-09-16
APR-SEP
SF FLATHEAD - HUNGRY HORSE DAM
(
HHWM8
)
Forecasts for Water Year
2027
Official Water Supply
ESP with 10 Days QPF
Ensemble:
2026-09-16
Issued:
2026-09-16
Hide Forecast
Forecast
Period
Forecasts Are in KAF
30 Year
Average
(1991-2020)
90 %
50 %
%
Average
10 %
APR-SEP
1414
1851
89
2585
2088
APR-JUL
1324
1712
86
2461
1981
APR-AUG
1376
1772
87
2541
2043
JAN-SEP
1650
2124
91
2772
2343
JAN-JUL
1561
2001
89
2649
2236
OCT-SEP
1792
2421
94
3268
2567
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/HHWM8W_SQIN.ESPF10.csv
HHWM8W_SQIN.ESPF0.csv|2026-09-16
HHWM8W_SQIN.ESPF10.csv|2026-09-16
HHWM8W_SQIN.ESPFM.csv|2026-09-16
APR-SEP
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#66CCFF
ESP10,ESPM,ESP0
ESP10,ESPM,ESP0
Last Forecast
