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Water Year
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SF FLATHEAD - HUNGRY HORSE DAM
(
HHWM8
)
Forecasts for Water Year
2025
Official Water Supply
ESP with 10 Days QPF
Ensemble:
2025-07-11
Issued:
2025-07-11
Hide Forecast
Forecast
Period
Forecasts Are in KAF
30 Year
Average
(1991-2020)
90 %
50 %
%
Average
10 %
APR-SEP
1476
1479
71
1493
2088
APR-JUL
1391
1391
70
1391
1981
APR-AUG
1439
1440
70
1446
2043
JAN-SEP
1734
1737
74
1751
2343
JAN-JUL
1649
1649
74
1649
2236
OCT-SEP
1868
1871
73
1885
2567
Experimental Water Supply
HEFS with 15 days EQPF
Ensemble:
2025-07-11
Issued:
2025-07-11
Hide Forecast
APR-SEP
1475
1478
71
1493
2088
APR-JUL
1391
1391
70
1391
1981
APR-AUG
1439
1440
70
1445
2043
JAN-SEP
1733
1737
74
1751
2343
JAN-JUL
1649
1649
74
1649
2236
OCT-SEP
1868
1871
73
1885
2567
Reference
ESP with 0 Days QPF
Ensemble:
2025-07-11
Issued:
2025-07-11
Hide Forecast
APR-SEP
1476
1479
71
1506
2088
APR-JUL
1391
1391
70
1395
1981
APR-AUG
1439
1440
70
1448
2043
JAN-SEP
1734
1737
74
1764
2343
JAN-JUL
1649
1649
74
1653
2236
OCT-SEP
1868
1872
73
1899
2567
Move the mouse over the desired "Forecast Period" to display a graph.
ESP10, 235, 277, 353, 398, 423, 70, , 74
ESP10, 236, 277, 354, 399, 424, 73, , 77
ESP10, 239, 277, 359, 400, 424, 75, , 79
ESP10, 248, 287, 370, 407, 431, 77, , 81
ESP10, 255, 291, 375, 409, 433, 80, , 84
ESP10, 256, 290, 374, 408, 436, 82, , 86
ESP10, 256, 290, 375, 408, 439, 84, , 88
ESP10, 257, 292, 376, 408, 443, 87, , 91
ESP10, 255, 292, 373, 405, 443, 89, , 93
ESP10, 256, 293, 372, 404, 442, 92, , 96
ESP10, 259, 294, 370, 403, 442, 94, , 98
ESP10, 261, 294, 367, 402, 440, 96, , 100
ESP10, 263, 298, 373, 408, 448, 99, , 103
ESP10, 266, 300, 378, 412, 453, 101, , 105
ESP10, 265, 302, 378, 411, 452, 103, , 107
ESP10, 263, 301, 380, 410, 451, 106, , 110
ESP10, 264, 302, 381, 412, 451, 108, , 112
ESP10, 263, 304, 384, 412, 450, 110, , 114
ESP10, 261, 302, 383, 410, 448, 113, , 117
ESP10, 255, 297, 378, 410, 444, 115, , 119
ESP10, 258, 298, 380, 411, 448, 117, , 121
ESP10, 261, 299, 384, 412, 450, 120, , 124
ESP10, 262, 298, 383, 412, 452, 122, , 126
ESP10, 268, 300, 386, 413, 454, 124, , 128
ESP10, 269, 301, 387, 419, 462, 127, , 131
ESP10, 269, 300, 387, 421, 462, 129, , 133
ESP10, 267, 299, 387, 420, 461, 131, , 135
ESP10, 271, 301, 387, 425, 464, 134, , 138
ESP10, 272, 304, 387, 424, 465, 136, , 140
ESP10, 275, 305, 387, 424, 466, 139, , 143
ESP10, 270, 296, 383, 413, 456, 141, , 145
ESP10, 274, 295, 382, 410, 452, 143, , 147
ESP10, 272, 298, 383, 409, 449, 146, , 150
ESP10, 267, 294, 379, 406, 443, 148, , 152
ESP10, 264, 292, 376, 404, 440, 150, , 154
ESP10, 258, 284, 369, 398, 432, 153, , 157
ESP10, 268, 294, 376, 407, 438, 155, , 159
ESP10, 259, 286, 368, 399, 429, 157, , 161
ESP10, 262, 291, 370, 403, 434, 160, , 164
ESP10, 266, 296, 373, 407, 438, 162, , 166
ESP10, 274, 303, 379, 415, 445, 164, , 168
ESP10, 282, 310, 385, 423, 453, 167, , 171
ESP10, 276, 308, 380, 418, 449, 169, , 173
ESP10, 278, 315, 381, 419, 451, 171, , 175
ESP10, 264, 296, 368, 405, 435, 174, , 178
ESP10, 250, 286, 368, 394, 423, 176, , 180
ESP10, 252, 286, 368, 394, 426, 178, , 182
ESP10, 258, 292, 372, 399, 433, 181, , 185
ESP10, 260, 295, 372, 399, 439, 183, , 187
ESP10, 264, 302, 378, 402, 443, 186, , 190
ESP10, 257, 295, 370, 397, 435, 188, , 192
ESP10, 264, 304, 375, 404, 444, 190, , 194
ESP10, 273, 313, 384, 412, 453, 193, , 197
ESP10, 274, 311, 384, 412, 453, 195, , 199
ESP10, 268, 311, 380, 411, 448, 197, , 201
ESP10, 269, 313, 381, 412, 456, 200, , 204
ESP10, 269, 314, 382, 413, 458, 202, , 206
ESP10, 278, 320, 390, 419, 464, 204, , 208
ESP10, 279, 324, 391, 422, 465, 207, , 211
ESP10, 280, 325, 394, 424, 467, 209, , 213
ESP10, 282, 332, 396, 426, 468, 211, , 215
ESP10, 275, 329, 392, 421, 461, 214, , 218
ESP10, 277, 330, 392, 423, 461, 216, , 220
ESP10, 274, 328, 388, 420, 458, 218, , 222
ESP10, 271, 325, 384, 416, 454, 221, , 225
ESP10, 282, 331, 391, 422, 461, 223, , 227
ESP10, 281, 330, 396, 421, 460, 226, , 230
ESP10, 287, 341, 404, 428, 466, 228, , 232
ESP10, 275, 323, 389, 421, 449, 230, , 234
ESP10, 280, 324, 390, 424, 451, 233, , 237
ESP10, 283, 331, 395, 429, 455, 235, , 239
ESP10, 285, 333, 398, 431, 458, 237, , 241
ESP10, 278, 328, 393, 427, 454, 240, , 244
ESP10, 276, 326, 391, 426, 452, 242, , 246
ESP10, 270, 320, 385, 422, 446, 244, , 248
ESP10, 274, 322, 387, 425, 449, 247, , 251
ESP10, 262, 312, 378, 416, 439, 249, , 253
ESP10, 272, 320, 386, 421, 447, 251, , 255
ESP10, 268, 312, 378, 413, 440, 254, , 258
ESP10, 273, 314, 380, 413, 437, 256, , 260
ESP10, 270, 309, 370, 404, 430, 258, , 262
ESP10, 274, 314, 372, 406, 432, 261, , 265
ESP10, 271, 314, 374, 405, 430, 263, , 267
ESP10, 282, 324, 381, 413, 438, 265, , 269
ESP10, 278, 316, 376, 405, 432, 268, , 272
ESP10, 275, 312, 376, 402, 429, 270, , 274
ESP10, 267, 307, 368, 397, 422, 273, , 277
ESP10, 271, 304, 365, 398, 426, 275, , 279
ESP10, 277, 308, 367, 401, 427, 277, , 281
ESP10, 279, 311, 367, 402, 426, 280, , 284
ESP10, 276, 310, 365, 399, 422, 282, , 286
ESP10, 275, 309, 364, 397, 419, 284, , 288
ESP10, 278, 311, 364, 397, 421, 287, , 291
ESP10, 283, 313, 367, 399, 427, 289, , 293
ESP10, 286, 319, 370, 405, 432, 294, , 298
ESP10, 284, 323, 370, 404, 431, 296, , 300
ESP10, 285, 328, 370, 404, 430, 298, , 302
ESP10, 287, 327, 371, 404, 430, 301, , 305
ESP10, 289, 330, 372, 406, 431, 303, , 307
ESP10, 287, 331, 371, 405, 429, 305, , 309
ESP10, 295, 337, 376, 410, 431, 308, , 312
ESP10, 295, 337, 377, 410, 430, 310, , 314
ESP10, 299, 337, 377, 409, 428, 312, , 316
ESP10, 302, 338, 381, 410, 429, 315, , 319
ESP10, 304, 339, 386, 412, 429, 317, , 321
ESP10, 304, 338, 384, 411, 429, 320, , 324
ESP10, 306, 338, 385, 414, 430, 322, , 326
ESP10, 309, 340, 386, 419, 433, 324, , 328
ESP10, 314, 342, 389, 422, 436, 327, , 331
ESP10, 315, 340, 389, 420, 436, 329, , 333
ESP10, 318, 345, 392, 422, 439, 331, , 335
ESP10, 318, 347, 395, 421, 438, 334, , 338
ESP10, 319, 347, 396, 422, 438, 336, , 340
ESP10, 318, 351, 395, 422, 438, 338, , 342
ESP10, 319, 356, 395, 421, 438, 341, , 345
ESP10, 315, 354, 390, 418, 436, 343, , 347
ESP10, 303, 346, 378, 405, 427, 345, , 349
ESP10, 314, 360, 386, 414, 440, 348, , 352
ESP10, 315, 359, 389, 412, 439, 350, , 354
ESP10, 318, 360, 393, 414, 439, 352, , 356
ESP10, 325, 365, 399, 422, 445, 355, , 359
ESP10, 325, 365, 400, 423, 445, 357, , 361
ESP10, 329, 368, 400, 423, 445, 360, , 364
ESP10, 331, 370, 401, 424, 445, 362, , 366
ESP10, 330, 368, 398, 422, 441, 364, , 368
ESP10, 332, 368, 399, 424, 441, 367, , 371
ESP10, 334, 366, 396, 423, 440, 369, , 373
ESP10, 327, 358, 388, 416, 431, 371, , 375
ESP10, 335, 363, 394, 423, 438, 374, , 378
ESP10, 331, 360, 390, 422, 436, 376, , 380
ESP10, 334, 361, 389, 422, 436, 378, , 382
ESP10, 336, 362, 392, 423, 438, 381, , 385
ESP10, 335, 361, 394, 420, 438, 383, , 387
ESP10, 336, 363, 398, 422, 445, 385, , 389
ESP10, 330, 357, 392, 421, 445, 388, , 392
ESP10, 330, 355, 392, 421, 443, 390, , 394
ESP10, 330, 351, 389, 422, 441, 392, , 396
ESP10, 340, 358, 395, 429, 448, 395, , 399
ESP10, 340, 356, 394, 427, 448, 397, , 401
ESP10, 319, 340, 377, 406, 428, 399, , 403
ESP10, 319, 340, 376, 404, 426, 402, , 406
ESP10, 313, 336, 369, 399, 418, 404, , 408
ESP10, 306, 333, 365, 394, 412, 407, , 411
ESP10, 311, 339, 368, 398, 415, 409, , 413
ESP10, 315, 344, 374, 402, 417, 411, , 415
ESP10, 318, 348, 376, 404, 420, 414, , 418
ESP10, 319, 353, 380, 406, 423, 416, , 420
ESP10, 318, 354, 380, 405, 422, 418, , 422
ESP10, 316, 357, 380, 404, 420, 421, , 425
ESP10, 319, 359, 382, 408, 422, 423, , 427
ESP10, 321, 361, 384, 412, 423, 425, , 429
ESP10, 321, 361, 385, 412, 423, 428, , 432
ESP10, 321, 363, 385, 413, 421, 430, , 434
ESP10, 325, 364, 385, 414, 421, 432, , 436
ESP10, 328, 361, 385, 413, 419, 435, , 439
ESP10, 327, 359, 382, 410, 418, 437, , 441
ESP10, 325, 355, 380, 405, 415, 439, , 443
ESP10, 323, 353, 379, 401, 413, 442, , 446
ESP10, 331, 364, 388, 408, 420, 444, , 448
ESP10, 334, 364, 389, 407, 421, 446, , 450
ESP10, 329, 360, 384, 402, 415, 449, , 453
ESP10, 324, 356, 381, 397, 411, 451, , 455
ESP10, 321, 354, 378, 396, 411, 454, , 458
ESP10, 323, 355, 379, 399, 413, 456, , 460
ESP10, 324, 356, 379, 401, 414, 458, , 462
ESP10, 330, 362, 383, 408, 420, 461, , 465
ESP10, 325, 357, 380, 403, 416, 463, , 467
ESP10, 325, 354, 378, 399, 417, 465, , 469
ESP10, 326, 355, 378, 397, 418, 468, , 472
ESP10, 321, 349, 376, 393, 412, 470, , 474
ESP10, 317, 345, 372, 389, 410, 472, , 476
ESP10, 320, 344, 371, 386, 410, 475, , 479
ESP10, 314, 336, 364, 378, 404, 477, , 481
ESP10, 308, 329, 358, 371, 397, 479, , 483
ESP10, 315, 336, 364, 375, 402, 482, , 486
ESP10, 319, 340, 370, 378, 405, 484, , 488
ESP10, 320, 341, 373, 380, 408, 486, , 490
ESP10, 310, 330, 363, 368, 397, 489, , 493
ESP10, 313, 333, 365, 373, 400, 491, , 495
ESP10, 309, 328, 359, 371, 396, 494, , 498
ESP10, 302, 323, 351, 364, 390, 496, , 500
ESP10, 287, 310, 339, 353, 376, 498, , 502
ESP10, 283, 305, 334, 349, 371, 501, , 505
ESP10, 279, 306, 326, 342, 366, 503, , 507
ESP10, 274, 300, 319, 338, 362, 505, , 509
ESP10, 284, 309, 328, 347, 371, 508, , 512
ESP10, 284, 309, 328, 347, 369, 510, , 514
ESP10, 279, 307, 324, 346, 365, 512, , 516
ESP10, 285, 314, 330, 353, 369, 515, , 519
ESP10, 292, 316, 336, 356, 371, 517, , 521
ESP10, 299, 324, 342, 363, 378, 519, , 523
ESP10, 289, 317, 334, 356, 370, 522, , 526
ESP10, 289, 317, 335, 356, 372, 524, , 528
ESP10, 276, 303, 321, 342, 359, 526, , 530
ESP10, 276, 299, 318, 338, 355, 529, , 533
ESP10, 278, 301, 323, 339, 356, 531, , 535
ESP10, 278, 301, 322, 339, 356, 533, , 537
ESP10, 275, 301, 322, 336, 354, 536, , 540
ESP10, 270, 296, 316, 330, 347, 538, , 542
ESP10, 273, 300, 320, 335, 351, 541, , 545
ESP10, 270, 296, 315, 331, 347, 543, , 547
ESP10, 274, 299, 319, 333, 350, 545, , 549
ESP10, 277, 302, 324, 340, 354, 548, , 552
ESP10, 279, 310, 328, 343, 358, 550, , 554
ESP10, 294, 327, 343, 359, 376, 552, , 556
ESP10, 289, 320, 339, 352, 369, 555, , 559
ESP10, 292, 317, 338, 351, 369, 557, , 561
ESP10, 285, 309, 331, 344, 361, 559, , 563
ESP10, 298, 323, 344, 359, 374, 562, , 566
ESP10, 303, 328, 352, 365, 378, 564, , 568
ESP10, 305, 328, 353, 366, 380, 566, , 570
ESP10, 292, 314, 337, 352, 364, 569, , 573
ESP10, 291, 317, 339, 352, 365, 571, , 575
ESP10, 290, 314, 335, 348, 361, 573, , 577
ESP10, 283, 306, 328, 341, 354, 576, , 580
ESP10, 281, 305, 326, 340, 354, 578, , 582
ESP10, 278, 304, 327, 339, 353, 580, , 584
ESP10, 288, 314, 337, 349, 364, 583, , 587
ESP10, 284, 309, 333, 346, 360, 585, , 589
ESP10, 298, 322, 345, 359, 370, 588, , 592
ESP10, 302, 325, 349, 362, 372, 590, , 594
ESP10, 307, 324, 348, 360, 371, 592, , 596
ESP10, 313, 329, 354, 366, 376, 595, , 599
ESP10, 310, 325, 352, 366, 373, 597, , 601
ESP10, 314, 326, 356, 369, 376, 599, , 603
ESP10, 314, 325, 355, 367, 380, 602, , 606
ESP10, 311, 323, 349, 360, 378, 604, , 608
ESP10, 319, 335, 357, 366, 385, 606, , 610
ESP10, 328, 347, 365, 379, 392, 609, , 613
ESP10, 330, 354, 369, 383, 395, 611, , 615
ESP10, 333, 355, 368, 383, 394, 613, , 617
ESP10, 332, 353, 369, 381, 393, 616, , 620
ESP10, 342, 366, 379, 394, 403, 618, , 622
ESP10, 340, 361, 374, 389, 398, 620, , 624
ESP10, 336, 358, 374, 386, 393, 623, , 627
ESP10, 332, 351, 371, 382, 386, 625, , 629
ESP10, 332, 349, 368, 379, 387, 628, , 632
ESP10, 345, 358, 375, 387, 394, 630, , 634
ESP10, 353, 365, 380, 391, 398, 632, , 636
ESP10, 363, 383, 392, 401, 410, 635, , 639
ESP10, 364, 384, 396, 404, 412, 637, , 641
ESP10, 365, 385, 397, 407, 414, 639, , 643
ESP10, 369, 387, 399, 410, 415, 642, , 646
ESP10, 366, 383, 396, 407, 411, 644, , 648
ESP10, 369, 389, 400, 409, 413, 646, , 650
ESP10, 368, 387, 396, 405, 410, 649, , 653
ESP10, 373, 390, 399, 408, 413, 651, , 655
ESP10, 378, 393, 401, 411, 415, 653, , 657
ESP10, 380, 391, 401, 409, 412, 656, , 660
ESP10, 370, 387, 391, 394, 395, 679, , 683
ESP10, 381, 394, 399, 401, 402, 682, , 686
ESP10, 386, 392, 396, 398, 399, 684, , 688
ESP10, 399, 405, 407, 409, 410, 686, , 690
ESP10, 407, 413, 414, 416, 417, 689, , 693
ESP10, 409, 414, 416, 417, 418, 691, , 695
ESP10, 409, 414, 415, 417, 417, 693, , 697
ESP10, 411, 415, 416, 417, 418, 696, , 700
ESP10, 410, 414, 415, 416, 416, 698, , 702
ESP10, 411, 415, 416, 417, 418, 700, , 704
ESP10, 411, 415, 417, 417, 418, 703, , 707
ESP10, 411, 416, 417, 417, 418, 705, , 709
ESP10, 412, 416, 417, 417, 418, 707, , 711
ESP10, 412, 416, 417, 417, 417, 710, , 714
ESP10, 412, 415, 416, 417, 417, 712, , 716
ESP10, 409, 412, 413, 413, 413, 714, , 718
ESP10, 411, 414, 415, 415, 415, 717, , 721
ESP10, 413, 415, 416, 417, 417, 719, , 723
ESP10, 413, 415, 416, 417, 417, 722, , 726
ESP10, 413, 415, 417, 417, 417, 724, , 728
ESP10, 413, 415, 417, 417, 417, 726, , 730
ESP10, 414, 415, 417, 417, 417, 729, , 733
ESP10, 414, 416, 417, 417, 417, 731, , 735
ESP10, 414, 416, 417, 417, 417, 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/HHWM8W_SQIN.ESPF10.csv
HHWM8W_SQIN.ESPF0.csv|2025-07-11
HHWM8W_SQIN.ESPF10.csv|2025-07-11
HHWM8W_SQIN.ESPFM.csv|2025-07-11
APR-SEP
SF FLATHEAD - HUNGRY HORSE DAM
(
HHWM8
)
Forecasts for Water Year
2026
Official Water Supply
ESP with 10 Days QPF
Ensemble:
2025-07-11
Issued:
2025-07-11
Hide Forecast
Forecast
Period
Forecasts Are in KAF
30 Year
Average
(1991-2020)
90 %
50 %
%
Average
10 %
APR-SEP
1384
1832
88
2568
2088
APR-JUL
1295
1707
86
2440
1981
APR-AUG
1346
1774
87
2523
2043
JAN-SEP
1557
2105
90
2741
2343
JAN-JUL
1469
1948
87
2613
2236
OCT-SEP
1710
2321
90
3079
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|2025-07-11
HHWM8W_SQIN.ESPF10.csv|2025-07-11
HHWM8W_SQIN.ESPFM.csv|2025-07-11
APR-SEP
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ESP10,ESPM,ESP0
ESP10,ESPM,ESP0
Last Forecast
