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Archive:
Water Year
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PRIEST - NEAR PRIEST RIVER
(
PRTI1
)
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
426
430
51
435
843
APR-JUL
412
412
52
412
800
APR-AUG
419
419
51
420
823
JAN-SEP
678
681
64
687
1069
JAN-JUL
664
664
65
664
1026
OCT-SEP
906
909
75
914
1217
Experimental Water Supply
HEFS with 15 days EQPF
Ensemble:
2026-08-15
Issued:
2026-08-15
Hide Forecast
APR-SEP
425
429
51
433
843
APR-JUL
412
412
52
412
800
APR-AUG
419
419
51
420
823
JAN-SEP
677
681
64
685
1069
JAN-JUL
664
664
65
664
1026
OCT-SEP
905
908
75
913
1217
Reference
ESP with 0 Days QPF
Ensemble:
2026-08-15
Issued:
2026-08-15
Hide Forecast
APR-SEP
426
431
51
439
843
APR-JUL
412
412
52
412
800
APR-AUG
419
419
51
423
823
JAN-SEP
678
683
64
691
1069
JAN-JUL
664
664
65
664
1026
OCT-SEP
906
910
75
918
1217
Move the mouse over the desired "Forecast Period" to display a graph.
ESP10, 267, 287, 326, 398, 448, 70, , 74
ESP10, 265, 285, 325, 396, 445, 72, , 76
ESP10, 269, 287, 326, 398, 447, 74, , 78
ESP10, 270, 288, 326, 397, 447, 76, , 80
ESP10, 273, 289, 327, 396, 447, 78, , 82
ESP10, 272, 289, 324, 394, 445, 81, , 85
ESP10, 271, 289, 325, 393, 445, 83, , 87
ESP10, 271, 289, 329, 393, 444, 85, , 89
ESP10, 270, 288, 328, 391, 443, 87, , 91
ESP10, 267, 288, 324, 389, 440, 89, , 93
ESP10, 266, 287, 324, 387, 439, 91, , 95
ESP10, 268, 287, 325, 388, 439, 93, , 97
ESP10, 267, 286, 323, 386, 439, 95, , 99
ESP10, 267, 285, 321, 386, 440, 97, , 101
ESP10, 264, 283, 317, 382, 436, 99, , 103
ESP10, 260, 278, 312, 377, 430, 102, , 106
ESP10, 253, 272, 305, 370, 423, 104, , 108
ESP10, 262, 277, 312, 376, 431, 106, , 110
ESP10, 263, 277, 312, 377, 430, 108, , 112
ESP10, 265, 278, 314, 379, 431, 110, , 114
ESP10, 258, 273, 309, 373, 426, 112, , 116
ESP10, 263, 275, 312, 376, 429, 114, , 118
ESP10, 257, 272, 309, 372, 428, 116, , 120
ESP10, 268, 279, 316, 378, 435, 118, , 122
ESP10, 269, 280, 316, 380, 438, 120, , 124
ESP10, 268, 281, 315, 378, 437, 122, , 126
ESP10, 267, 280, 321, 377, 437, 125, , 129
ESP10, 266, 281, 322, 377, 436, 127, , 131
ESP10, 263, 277, 320, 375, 434, 129, , 133
ESP10, 253, 272, 316, 370, 428, 131, , 135
ESP10, 254, 273, 317, 371, 429, 133, , 137
ESP10, 253, 276, 315, 370, 427, 135, , 139
ESP10, 253, 276, 315, 370, 426, 137, , 141
ESP10, 261, 281, 318, 373, 430, 139, , 143
ESP10, 264, 282, 321, 375, 431, 141, , 145
ESP10, 265, 284, 321, 375, 432, 143, , 147
ESP10, 263, 284, 323, 374, 430, 145, , 149
ESP10, 259, 283, 321, 370, 425, 148, , 152
ESP10, 263, 286, 324, 377, 426, 150, , 154
ESP10, 263, 284, 327, 376, 422, 152, , 156
ESP10, 266, 286, 332, 378, 425, 154, , 158
ESP10, 265, 285, 331, 377, 423, 156, , 160
ESP10, 266, 289, 333, 380, 429, 158, , 162
ESP10, 275, 298, 344, 396, 438, 160, , 164
ESP10, 270, 293, 343, 390, 433, 162, , 166
ESP10, 268, 294, 344, 389, 432, 164, , 168
ESP10, 270, 294, 344, 392, 436, 166, , 170
ESP10, 272, 301, 348, 406, 441, 169, , 173
ESP10, 268, 298, 345, 404, 438, 171, , 175
ESP10, 275, 308, 352, 413, 446, 173, , 177
ESP10, 272, 302, 349, 406, 440, 175, , 179
ESP10, 281, 313, 352, 409, 440, 177, , 181
ESP10, 278, 313, 351, 406, 437, 179, , 183
ESP10, 288, 322, 363, 415, 446, 181, , 185
ESP10, 278, 312, 355, 407, 439, 183, , 187
ESP10, 281, 311, 354, 409, 439, 185, , 189
ESP10, 276, 307, 349, 407, 435, 187, , 191
ESP10, 274, 306, 348, 408, 437, 189, , 193
ESP10, 279, 316, 362, 413, 446, 192, , 196
ESP10, 263, 303, 350, 405, 434, 194, , 198
ESP10, 269, 313, 357, 409, 438, 196, , 200
ESP10, 271, 314, 358, 412, 439, 198, , 202
ESP10, 268, 316, 354, 411, 436, 200, , 204
ESP10, 258, 305, 342, 400, 426, 202, , 206
ESP10, 267, 312, 349, 407, 440, 204, , 208
ESP10, 265, 304, 347, 401, 434, 206, , 210
ESP10, 269, 309, 356, 409, 439, 208, , 212
ESP10, 268, 308, 359, 409, 439, 210, , 214
ESP10, 264, 302, 353, 403, 433, 212, , 216
ESP10, 263, 297, 353, 399, 427, 215, , 219
ESP10, 258, 293, 347, 397, 421, 217, , 221
ESP10, 258, 290, 346, 391, 420, 219, , 223
ESP10, 256, 290, 344, 388, 418, 221, , 225
ESP10, 250, 282, 338, 379, 414, 223, , 227
ESP10, 253, 290, 344, 380, 415, 225, , 229
ESP10, 252, 288, 343, 382, 415, 227, , 231
ESP10, 253, 287, 349, 381, 417, 229, , 233
ESP10, 257, 289, 352, 382, 422, 231, , 235
ESP10, 255, 285, 351, 379, 422, 233, , 237
ESP10, 249, 282, 345, 373, 418, 236, , 240
ESP10, 265, 304, 357, 385, 428, 238, , 242
ESP10, 278, 320, 363, 391, 432, 240, , 244
ESP10, 283, 331, 370, 397, 437, 242, , 246
ESP10, 283, 330, 372, 400, 438, 244, , 248
ESP10, 277, 321, 365, 397, 435, 246, , 250
ESP10, 267, 310, 357, 389, 428, 248, , 252
ESP10, 276, 316, 366, 396, 434, 250, , 254
ESP10, 288, 328, 372, 402, 437, 252, , 256
ESP10, 286, 323, 367, 397, 433, 254, , 258
ESP10, 291, 324, 368, 397, 434, 256, , 260
ESP10, 290, 326, 370, 399, 433, 259, , 263
ESP10, 293, 329, 370, 399, 434, 261, , 265
ESP10, 277, 315, 358, 388, 421, 263, , 267
ESP10, 268, 312, 352, 383, 414, 265, , 269
ESP10, 263, 310, 348, 378, 412, 267, , 271
ESP10, 263, 313, 348, 378, 412, 269, , 273
ESP10, 267, 320, 356, 383, 415, 271, , 275
ESP10, 267, 323, 357, 382, 415, 273, , 277
ESP10, 271, 324, 358, 391, 418, 275, , 279
ESP10, 275, 329, 359, 393, 418, 277, , 281
ESP10, 275, 328, 359, 393, 419, 279, , 283
ESP10, 277, 329, 361, 395, 420, 282, , 286
ESP10, 278, 330, 361, 395, 420, 284, , 288
ESP10, 283, 331, 360, 397, 423, 286, , 290
ESP10, 289, 335, 364, 395, 427, 288, , 292
ESP10, 287, 333, 365, 393, 425, 290, , 294
ESP10, 288, 332, 366, 393, 423, 292, , 296
ESP10, 290, 334, 368, 395, 424, 294, , 298
ESP10, 292, 336, 370, 395, 424, 296, , 300
ESP10, 300, 345, 376, 400, 430, 298, , 302
ESP10, 303, 346, 377, 402, 430, 300, , 304
ESP10, 307, 347, 379, 405, 431, 303, , 307
ESP10, 307, 346, 380, 406, 431, 305, , 309
ESP10, 310, 350, 383, 409, 434, 307, , 311
ESP10, 311, 351, 383, 410, 435, 309, , 313
ESP10, 309, 348, 381, 407, 433, 311, , 315
ESP10, 310, 350, 383, 408, 433, 313, , 317
ESP10, 324, 360, 392, 418, 443, 315, , 319
ESP10, 326, 361, 394, 424, 442, 317, , 321
ESP10, 327, 362, 395, 425, 443, 319, , 323
ESP10, 330, 364, 398, 428, 444, 321, , 325
ESP10, 327, 362, 396, 425, 442, 323, , 327
ESP10, 327, 359, 394, 422, 440, 326, , 330
ESP10, 332, 359, 393, 425, 442, 328, , 332
ESP10, 335, 362, 393, 424, 445, 330, , 334
ESP10, 339, 361, 392, 422, 444, 332, , 336
ESP10, 337, 356, 388, 421, 440, 334, , 338
ESP10, 339, 361, 390, 424, 443, 336, , 340
ESP10, 335, 356, 388, 420, 438, 338, , 342
ESP10, 337, 357, 389, 422, 439, 340, , 344
ESP10, 331, 352, 380, 413, 433, 342, , 346
ESP10, 337, 356, 384, 420, 439, 344, , 348
ESP10, 323, 343, 373, 406, 427, 346, , 350
ESP10, 328, 345, 375, 410, 429, 349, , 353
ESP10, 324, 347, 371, 407, 427, 351, , 355
ESP10, 305, 331, 355, 391, 410, 353, , 357
ESP10, 316, 341, 361, 403, 421, 355, , 359
ESP10, 324, 350, 371, 413, 428, 357, , 361
ESP10, 311, 331, 356, 397, 410, 359, , 363
ESP10, 324, 350, 374, 412, 426, 361, , 365
ESP10, 318, 344, 366, 405, 421, 363, , 367
ESP10, 327, 349, 370, 411, 427, 365, , 369
ESP10, 331, 349, 372, 415, 427, 367, , 371
ESP10, 334, 355, 378, 419, 433, 370, , 374
ESP10, 339, 360, 383, 424, 438, 372, , 376
ESP10, 343, 366, 390, 428, 442, 374, , 378
ESP10, 343, 366, 390, 428, 441, 376, , 380
ESP10, 339, 358, 383, 423, 436, 378, , 382
ESP10, 335, 353, 384, 419, 432, 380, , 384
ESP10, 339, 358, 387, 422, 434, 382, , 386
ESP10, 342, 365, 391, 424, 439, 384, , 388
ESP10, 342, 367, 395, 426, 440, 386, , 390
ESP10, 342, 367, 396, 426, 441, 388, , 392
ESP10, 337, 362, 389, 419, 435, 390, , 394
ESP10, 349, 379, 402, 430, 445, 393, , 397
ESP10, 350, 380, 404, 430, 446, 395, , 399
ESP10, 345, 375, 403, 425, 441, 397, , 401
ESP10, 345, 379, 403, 427, 441, 399, , 403
ESP10, 340, 376, 399, 426, 437, 401, , 405
ESP10, 342, 379, 403, 428, 441, 403, , 407
ESP10, 346, 383, 409, 435, 445, 405, , 409
ESP10, 343, 379, 406, 430, 442, 407, , 411
ESP10, 332, 369, 395, 420, 431, 409, , 413
ESP10, 338, 377, 402, 431, 437, 411, , 415
ESP10, 336, 375, 400, 428, 435, 413, , 417
ESP10, 332, 370, 394, 424, 430, 416, , 420
ESP10, 333, 374, 397, 427, 433, 418, , 422
ESP10, 334, 379, 398, 428, 439, 420, , 424
ESP10, 343, 380, 404, 435, 451, 422, , 426
ESP10, 347, 382, 410, 438, 456, 424, , 428
ESP10, 348, 382, 410, 437, 456, 426, , 430
ESP10, 374, 404, 429, 455, 473, 428, , 432
ESP10, 399, 431, 457, 477, 495, 430, , 434
ESP10, 392, 424, 450, 469, 489, 432, , 436
ESP10, 388, 418, 448, 465, 484, 434, , 438
ESP10, 398, 434, 458, 473, 491, 437, , 441
ESP10, 390, 426, 452, 464, 482, 439, , 443
ESP10, 393, 428, 454, 469, 487, 441, , 445
ESP10, 382, 420, 448, 461, 478, 443, , 447
ESP10, 388, 424, 450, 465, 481, 445, , 449
ESP10, 388, 426, 448, 464, 480, 447, , 451
ESP10, 385, 423, 445, 464, 480, 449, , 453
ESP10, 386, 424, 453, 466, 480, 451, , 455
ESP10, 384, 420, 451, 466, 476, 453, , 457
ESP10, 382, 424, 451, 467, 479, 455, , 459
ESP10, 382, 424, 451, 468, 481, 457, , 461
ESP10, 379, 424, 449, 466, 479, 460, , 464
ESP10, 391, 435, 459, 477, 490, 462, , 466
ESP10, 384, 428, 454, 473, 484, 464, , 468
ESP10, 381, 425, 449, 468, 477, 466, , 470
ESP10, 374, 421, 442, 462, 470, 468, , 472
ESP10, 375, 422, 439, 460, 468, 470, , 474
ESP10, 375, 423, 440, 459, 468, 472, , 476
ESP10, 378, 424, 442, 460, 469, 474, , 478
ESP10, 373, 420, 438, 454, 463, 476, , 480
ESP10, 391, 439, 457, 472, 481, 478, , 482
ESP10, 382, 427, 446, 460, 469, 480, , 484
ESP10, 388, 424, 445, 458, 467, 483, , 487
ESP10, 377, 415, 436, 450, 457, 485, , 489
ESP10, 379, 416, 438, 451, 459, 487, , 491
ESP10, 383, 419, 444, 454, 462, 489, , 493
ESP10, 387, 421, 447, 458, 464, 491, , 495
ESP10, 387, 419, 448, 457, 462, 493, , 497
ESP10, 399, 428, 455, 467, 471, 495, , 499
ESP10, 398, 426, 452, 466, 471, 497, , 501
ESP10, 398, 430, 458, 468, 473, 499, , 503
ESP10, 403, 431, 459, 467, 475, 501, , 505
ESP10, 407, 435, 459, 467, 474, 504, , 508
ESP10, 408, 439, 457, 465, 472, 506, , 510
ESP10, 406, 436, 455, 462, 470, 508, , 512
ESP10, 408, 435, 454, 462, 468, 510, , 514
ESP10, 411, 437, 458, 466, 471, 512, , 516
ESP10, 411, 439, 460, 467, 472, 514, , 518
ESP10, 410, 438, 459, 467, 472, 516, , 520
ESP10, 408, 440, 458, 466, 472, 518, , 522
ESP10, 406, 440, 456, 466, 470, 520, , 524
ESP10, 406, 444, 456, 465, 470, 522, , 526
ESP10, 381, 419, 433, 442, 445, 524, , 528
ESP10, 376, 410, 430, 437, 440, 527, , 531
ESP10, 380, 413, 432, 439, 443, 529, , 533
ESP10, 384, 417, 433, 440, 442, 531, , 535
ESP10, 392, 418, 432, 439, 441, 533, , 537
ESP10, 391, 421, 429, 436, 438, 535, , 539
ESP10, 390, 421, 429, 435, 436, 537, , 541
ESP10, 388, 417, 425, 431, 433, 539, , 543
ESP10, 389, 415, 424, 430, 432, 541, , 545
ESP10, 364, 396, 407, 412, 414, 543, , 547
ESP10, 379, 400, 407, 412, 414, 545, , 549
ESP10, 380, 403, 407, 413, 414, 547, , 551
ESP10, 378, 401, 406, 410, 412, 550, , 554
ESP10, 376, 396, 403, 408, 410, 552, , 556
ESP10, 377, 399, 405, 409, 411, 554, , 558
ESP10, 384, 401, 406, 409, 411, 556, , 560
ESP10, 388, 401, 405, 409, 411, 558, , 562
ESP10, 391, 403, 406, 411, 412, 560, , 564
ESP10, 389, 401, 407, 410, 412, 562, , 566
ESP10, 384, 396, 401, 404, 406, 564, , 568
ESP10, 390, 402, 405, 409, 410, 566, , 570
ESP10, 394, 402, 406, 409, 411, 568, , 572
ESP10, 387, 395, 399, 403, 404, 571, , 575
ESP10, 386, 393, 397, 400, 402, 573, , 577
ESP10, 388, 393, 398, 401, 402, 575, , 579
ESP10, 390, 394, 399, 402, 404, 577, , 581
ESP10, 390, 394, 399, 403, 404, 579, , 583
ESP10, 393, 395, 401, 404, 405, 581, , 585
ESP10, 393, 394, 399, 402, 404, 583, , 587
ESP10, 394, 396, 401, 404, 406, 585, , 589
ESP10, 396, 398, 403, 406, 408, 587, , 591
ESP10, 396, 399, 403, 406, 408, 589, , 593
ESP10, 398, 400, 404, 407, 409, 591, , 595
ESP10, 399, 402, 404, 408, 410, 594, , 598
ESP10, 397, 400, 403, 406, 408, 596, , 600
ESP10, 410, 413, 416, 419, 421, 598, , 602
ESP10, 409, 413, 416, 419, 420, 600, , 604
ESP10, 409, 413, 415, 418, 420, 602, , 606
ESP10, 409, 413, 416, 418, 420, 604, , 608
ESP10, 409, 414, 416, 418, 420, 606, , 610
ESP10, 410, 415, 417, 420, 421, 608, , 612
ESP10, 412, 415, 418, 420, 422, 610, , 614
ESP10, 412, 416, 418, 420, 422, 612, , 616
ESP10, 413, 417, 419, 421, 422, 614, , 618
ESP10, 412, 416, 418, 420, 421, 617, , 621
ESP10, 413, 416, 418, 421, 422, 619, , 623
ESP10, 413, 416, 418, 420, 421, 621, , 625
ESP10, 413, 417, 418, 421, 421, 623, , 627
ESP10, 429, 432, 434, 437, 437, 625, , 629
ESP10, 429, 432, 434, 436, 437, 627, , 631
ESP10, 428, 431, 433, 435, 436, 629, , 633
ESP10, 429, 432, 434, 436, 437, 631, , 635
ESP10, 430, 433, 434, 436, 437, 633, , 637
ESP10, 429, 432, 434, 436, 437, 635, , 639
ESP10, 430, 433, 434, 436, 437, 638, , 642
ESP10, 430, 433, 435, 436, 437, 640, , 644
ESP10, 430, 433, 435, 436, 437, 642, , 646
ESP10, 430, 433, 435, 436, 437, 644, , 648
ESP10, 430, 433, 435, 436, 437, 646, , 650
ESP10, 431, 433, 435, 436, 438, 648, , 652
ESP10, 431, 433, 435, 436, 437, 650, , 654
ESP10, 431, 433, 435, 436, 438, 652, , 656
ESP10, 431, 433, 435, 436, 437, 654, , 658
ESP10, 431, 433, 435, 436, 437, 656, , 660
ESP10, 432, 433, 435, 436, 437, 658, , 662
ESP10, 432, 433, 435, 436, 438, 661, , 665
ESP10, 428, 429, 431, 432, 434, 663, , 667
ESP10, 427, 429, 431, 432, 433, 665, , 669
ESP10, 428, 429, 431, 432, 433, 667, , 671
ESP10, 428, 430, 431, 432, 434, 669, , 673
ESP10, 428, 429, 431, 432, 433, 671, , 675
ESP10, 428, 430, 431, 432, 433, 673, , 677
ESP10, 428, 429, 431, 432, 433, 675, , 679
ESP10, 428, 430, 431, 433, 433, 677, , 681
ESP10, 428, 430, 431, 432, 433, 679, , 683
ESP10, 428, 430, 431, 433, 434, 681, , 685
ESP10, 429, 430, 432, 433, 434, 684, , 688
ESP10, 429, 430, 432, 433, 434, 686, , 690
ESP10, 429, 431, 432, 433, 434, 688, , 692
ESP10, 429, 430, 432, 433, 434, 690, , 694
ESP10, 429, 431, 432, 434, 434, 692, , 696
ESP10, 429, 431, 432, 434, 434, 694, , 698
ESP10, 432, 433, 435, 436, 437, 696, , 700
ESP10, 432, 433, 435, 436, 437, 698, , 702
ESP10, 432, 433, 435, 436, 437, 700, , 704
ESP10, 432, 434, 435, 436, 437, 702, , 706
ESP10, 432, 433, 435, 436, 436, 705, , 709
ESP10, 432, 433, 435, 436, 436, 707, , 711
ESP10, 432, 433, 435, 436, 436, 709, , 713
ESP10, 432, 433, 435, 436, 436, 711, , 715
ESP10, 432, 434, 435, 436, 436, 713, , 717
ESP10, 432, 434, 435, 436, 436, 715, , 719
ESP10, 432, 434, 435, 436, 436, 717, , 721
ESP10, 432, 434, 435, 436, 436, 719, , 723
ESP10, 432, 433, 435, 435, 436, 721, , 725
ESP10, 432, 433, 435, 435, 436, 723, , 727
ESP10, 432, 433, 434, 435, 435, 725, , 729
ESP10, 431, 433, 434, 435, 435, 728, , 732
ESP10, 432, 433, 434, 435, 435, 730, , 734
ESP10, 432, 433, 434, 435, 435, 732, , 736
ESP10, 432, 433, 434, 434, 435, 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/PRTI1W_SQIN.ESPF10.csv
PRTI1W_SQIN.ESPF0.csv|2026-08-15
PRTI1W_SQIN.ESPF10.csv|2026-08-15
PRTI1W_SQIN.ESPFM.csv|2026-08-15
APR-SEP
PRIEST - NEAR PRIEST RIVER
(
PRTI1
)
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
357
717
85
900
843
APR-JUL
338
639
80
816
800
APR-AUG
346
681
83
860
823
JAN-SEP
584
947
89
1314
1069
JAN-JUL
557
873
85
1234
1026
OCT-SEP
689
1058
87
1481
1217
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/PRTI1W_SQIN.ESPF10.csv
PRTI1W_SQIN.ESPF0.csv|2026-08-15
PRTI1W_SQIN.ESPF10.csv|2026-08-15
PRTI1W_SQIN.ESPFM.csv|2026-08-15
APR-SEP
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ESP10,ESPM,ESP0
ESP10,ESPM,ESP0
Last Forecast
