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Archive:
Water Year
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GRANDE RONDE - NEAR PERRY
(
LGNO3
)
Forecasts for Water Year
2026
Official Water Supply
ESP with 10 Days QPF
Ensemble:
2026-07-04
Issued:
2026-07-04
Hide Forecast
Forecast
Period
Forecasts Are in KAF
30 Year
Average
(1991-2020)
90 %
50 %
%
Average
10 %
APR-SEP
51
51
29
53
176
APR-JUL
51
51
30
51
172
JAN-SEP
98
98
36
99
274
JAN-JUL
98
98
36
98
271
OCT-SEP
115
115
40
117
291
Experimental Water Supply
HEFS with 15 days EQPF
Ensemble:
2026-07-04
Issued:
2026-07-04
Hide Forecast
APR-SEP
51
51
29
53
176
APR-JUL
51
51
30
51
172
JAN-SEP
98
98
36
100
274
JAN-JUL
98
98
36
98
271
OCT-SEP
115
116
40
117
291
Reference
ESP with 0 Days QPF
Ensemble:
2026-07-04
Issued:
2026-07-04
Hide Forecast
APR-SEP
51
52
29
53
176
APR-JUL
51
51
30
51
172
JAN-SEP
98
98
36
100
274
JAN-JUL
98
98
36
98
271
OCT-SEP
115
116
40
117
291
Move the mouse over the desired "Forecast Period" to display a graph.
ESP10, 233, 308, 392, 427, 458, 70, , 74
ESP10, 232, 305, 391, 425, 457, 73, , 77
ESP10, 232, 304, 391, 425, 457, 75, , 79
ESP10, 233, 306, 394, 426, 458, 78, , 82
ESP10, 234, 306, 394, 426, 458, 80, , 84
ESP10, 233, 302, 392, 424, 456, 82, , 86
ESP10, 233, 303, 392, 424, 457, 85, , 89
ESP10, 234, 305, 395, 425, 458, 87, , 91
ESP10, 233, 304, 394, 425, 457, 90, , 94
ESP10, 233, 303, 393, 424, 457, 92, , 96
ESP10, 235, 305, 392, 424, 457, 95, , 99
ESP10, 237, 307, 396, 429, 462, 97, , 101
ESP10, 238, 306, 394, 428, 460, 99, , 103
ESP10, 238, 306, 393, 430, 460, 102, , 106
ESP10, 234, 303, 391, 425, 459, 104, , 108
ESP10, 228, 302, 386, 419, 456, 107, , 111
ESP10, 227, 301, 386, 422, 456, 109, , 113
ESP10, 228, 303, 386, 423, 457, 111, , 115
ESP10, 234, 312, 391, 429, 461, 114, , 118
ESP10, 237, 313, 393, 431, 463, 116, , 120
ESP10, 236, 313, 390, 429, 461, 119, , 123
ESP10, 239, 315, 393, 430, 464, 121, , 125
ESP10, 238, 314, 393, 427, 462, 123, , 127
ESP10, 241, 322, 400, 433, 470, 126, , 130
ESP10, 242, 325, 404, 435, 473, 128, , 132
ESP10, 242, 326, 404, 434, 473, 131, , 135
ESP10, 242, 325, 405, 434, 472, 133, , 137
ESP10, 242, 325, 406, 435, 477, 135, , 139
ESP10, 241, 324, 403, 435, 479, 138, , 142
ESP10, 238, 323, 399, 428, 475, 140, , 144
ESP10, 239, 324, 399, 433, 476, 143, , 147
ESP10, 240, 324, 398, 432, 476, 145, , 149
ESP10, 241, 325, 399, 437, 479, 148, , 152
ESP10, 241, 327, 400, 439, 480, 150, , 154
ESP10, 243, 327, 400, 441, 481, 152, , 156
ESP10, 245, 327, 402, 442, 482, 155, , 159
ESP10, 245, 327, 402, 441, 483, 157, , 161
ESP10, 243, 329, 403, 443, 483, 160, , 164
ESP10, 249, 331, 402, 443, 482, 162, , 166
ESP10, 249, 331, 402, 446, 481, 164, , 168
ESP10, 256, 336, 406, 450, 484, 167, , 171
ESP10, 260, 340, 409, 454, 487, 169, , 173
ESP10, 256, 338, 407, 450, 486, 172, , 176
ESP10, 267, 345, 410, 455, 490, 174, , 178
ESP10, 266, 344, 410, 456, 489, 176, , 180
ESP10, 261, 344, 408, 452, 488, 179, , 183
ESP10, 273, 354, 418, 460, 493, 181, , 185
ESP10, 275, 361, 421, 464, 495, 184, , 188
ESP10, 276, 361, 421, 463, 494, 186, , 190
ESP10, 271, 362, 418, 458, 492, 189, , 193
ESP10, 267, 357, 414, 453, 489, 191, , 195
ESP10, 262, 351, 409, 449, 486, 193, , 197
ESP10, 267, 357, 416, 455, 489, 196, , 200
ESP10, 271, 362, 422, 460, 492, 198, , 202
ESP10, 259, 350, 414, 452, 485, 201, , 205
ESP10, 270, 359, 421, 462, 492, 203, , 207
ESP10, 266, 352, 415, 458, 488, 205, , 209
ESP10, 278, 363, 422, 462, 495, 208, , 212
ESP10, 278, 360, 420, 465, 494, 210, , 214
ESP10, 262, 349, 404, 453, 484, 213, , 217
ESP10, 245, 327, 388, 433, 467, 215, , 219
ESP10, 258, 341, 398, 445, 476, 217, , 221
ESP10, 254, 333, 391, 441, 471, 220, , 224
ESP10, 250, 324, 385, 429, 464, 222, , 226
ESP10, 261, 331, 390, 441, 471, 225, , 229
ESP10, 257, 324, 387, 429, 466, 227, , 231
ESP10, 258, 323, 389, 429, 466, 229, , 233
ESP10, 268, 333, 393, 443, 474, 232, , 236
ESP10, 270, 331, 391, 441, 474, 234, , 238
ESP10, 267, 330, 392, 435, 472, 237, , 241
ESP10, 263, 327, 391, 433, 469, 239, , 243
ESP10, 259, 326, 388, 426, 467, 242, , 246
ESP10, 249, 320, 382, 421, 461, 244, , 248
ESP10, 259, 326, 387, 423, 465, 246, , 250
ESP10, 259, 327, 388, 423, 465, 249, , 253
ESP10, 257, 325, 386, 425, 463, 251, , 255
ESP10, 253, 322, 383, 423, 459, 254, , 258
ESP10, 255, 324, 388, 428, 461, 256, , 260
ESP10, 279, 347, 405, 445, 477, 258, , 262
ESP10, 266, 340, 388, 429, 462, 261, , 265
ESP10, 269, 338, 385, 426, 460, 263, , 267
ESP10, 271, 343, 387, 427, 463, 266, , 270
ESP10, 283, 353, 399, 437, 475, 268, , 272
ESP10, 287, 351, 396, 435, 473, 270, , 274
ESP10, 285, 348, 394, 435, 470, 273, , 277
ESP10, 285, 347, 392, 435, 469, 275, , 279
ESP10, 291, 352, 396, 440, 473, 278, , 282
ESP10, 291, 353, 396, 439, 471, 280, , 284
ESP10, 293, 352, 396, 438, 471, 282, , 286
ESP10, 294, 354, 399, 439, 471, 285, , 289
ESP10, 292, 354, 403, 439, 471, 287, , 291
ESP10, 298, 353, 403, 440, 471, 290, , 294
ESP10, 303, 358, 408, 444, 474, 292, , 296
ESP10, 303, 358, 409, 444, 474, 295, , 299
ESP10, 301, 355, 410, 442, 477, 297, , 301
ESP10, 303, 359, 412, 446, 478, 299, , 303
ESP10, 286, 345, 399, 433, 467, 302, , 306
ESP10, 296, 354, 406, 442, 476, 304, , 308
ESP10, 297, 357, 407, 444, 478, 307, , 311
ESP10, 304, 360, 410, 445, 479, 309, , 313
ESP10, 308, 361, 411, 448, 481, 311, , 315
ESP10, 309, 361, 411, 451, 481, 314, , 318
ESP10, 310, 366, 411, 455, 481, 316, , 320
ESP10, 312, 369, 412, 457, 481, 319, , 323
ESP10, 325, 374, 414, 458, 482, 321, , 325
ESP10, 325, 376, 413, 457, 481, 323, , 327
ESP10, 324, 376, 413, 458, 481, 326, , 330
ESP10, 326, 377, 417, 458, 482, 328, , 332
ESP10, 324, 376, 417, 457, 481, 331, , 335
ESP10, 327, 381, 422, 459, 483, 333, , 337
ESP10, 326, 382, 424, 461, 483, 336, , 340
ESP10, 330, 385, 427, 462, 485, 338, , 342
ESP10, 330, 385, 428, 462, 485, 340, , 344
ESP10, 332, 387, 430, 464, 486, 343, , 347
ESP10, 334, 386, 432, 465, 486, 345, , 349
ESP10, 340, 387, 434, 466, 487, 348, , 352
ESP10, 341, 388, 435, 469, 489, 350, , 354
ESP10, 341, 394, 436, 469, 488, 352, , 356
ESP10, 341, 393, 438, 469, 488, 355, , 359
ESP10, 341, 395, 440, 469, 489, 357, , 361
ESP10, 342, 396, 443, 470, 490, 360, , 364
ESP10, 342, 396, 444, 471, 490, 362, , 366
ESP10, 341, 394, 443, 469, 490, 364, , 368
ESP10, 338, 389, 442, 466, 490, 367, , 371
ESP10, 342, 391, 444, 465, 489, 369, , 373
ESP10, 348, 397, 448, 469, 493, 372, , 376
ESP10, 341, 389, 443, 467, 490, 374, , 378
ESP10, 340, 392, 442, 466, 490, 376, , 380
ESP10, 335, 388, 438, 462, 486, 379, , 383
ESP10, 329, 383, 433, 459, 483, 381, , 385
ESP10, 330, 383, 434, 461, 485, 384, , 388
ESP10, 331, 384, 434, 464, 488, 386, , 390
ESP10, 333, 386, 436, 465, 489, 389, , 393
ESP10, 334, 386, 438, 466, 492, 391, , 395
ESP10, 332, 384, 437, 466, 492, 393, , 397
ESP10, 327, 378, 430, 463, 488, 396, , 400
ESP10, 325, 377, 429, 463, 486, 398, , 402
ESP10, 329, 387, 431, 466, 491, 401, , 405
ESP10, 322, 379, 424, 462, 486, 403, , 407
ESP10, 336, 398, 440, 473, 497, 405, , 409
ESP10, 332, 393, 436, 471, 496, 408, , 412
ESP10, 337, 400, 441, 475, 499, 410, , 414
ESP10, 340, 407, 444, 477, 501, 413, , 417
ESP10, 339, 406, 443, 477, 500, 415, , 419
ESP10, 337, 404, 444, 477, 499, 417, , 421
ESP10, 340, 410, 450, 482, 501, 420, , 424
ESP10, 339, 411, 451, 483, 500, 422, , 426
ESP10, 330, 402, 443, 477, 497, 425, , 429
ESP10, 326, 402, 443, 474, 496, 427, , 431
ESP10, 321, 396, 441, 471, 492, 430, , 434
ESP10, 332, 410, 451, 480, 499, 432, , 436
ESP10, 335, 410, 450, 480, 499, 434, , 438
ESP10, 333, 406, 447, 478, 497, 437, , 441
ESP10, 328, 398, 440, 472, 492, 439, , 443
ESP10, 335, 405, 446, 483, 496, 442, , 446
ESP10, 333, 404, 442, 480, 495, 444, , 448
ESP10, 333, 403, 444, 478, 495, 446, , 450
ESP10, 328, 396, 441, 473, 491, 449, , 453
ESP10, 331, 397, 442, 477, 492, 451, , 455
ESP10, 339, 406, 451, 485, 499, 454, , 458
ESP10, 340, 397, 444, 478, 493, 456, , 460
ESP10, 330, 384, 432, 468, 485, 458, , 462
ESP10, 341, 401, 444, 479, 496, 461, , 465
ESP10, 359, 416, 455, 490, 505, 463, , 467
ESP10, 361, 417, 459, 490, 506, 466, , 470
ESP10, 369, 420, 463, 492, 507, 468, , 472
ESP10, 367, 415, 461, 488, 504, 470, , 474
ESP10, 369, 423, 465, 490, 506, 473, , 477
ESP10, 380, 433, 471, 497, 508, 475, , 479
ESP10, 390, 436, 475, 499, 509, 478, , 482
ESP10, 388, 434, 473, 499, 508, 480, , 484
ESP10, 388, 437, 477, 501, 509, 483, , 487
ESP10, 389, 434, 477, 500, 509, 485, , 489
ESP10, 369, 418, 459, 487, 497, 487, , 491
ESP10, 378, 426, 465, 491, 500, 490, , 494
ESP10, 391, 432, 475, 496, 504, 492, , 496
ESP10, 389, 426, 472, 492, 501, 495, , 499
ESP10, 391, 425, 472, 489, 499, 497, , 501
ESP10, 398, 435, 480, 494, 504, 499, , 503
ESP10, 403, 438, 484, 496, 507, 502, , 506
ESP10, 406, 438, 485, 498, 505, 504, , 508
ESP10, 410, 444, 485, 500, 506, 507, , 511
ESP10, 414, 450, 487, 504, 509, 509, , 513
ESP10, 415, 450, 487, 504, 507, 511, , 515
ESP10, 415, 449, 485, 504, 508, 514, , 518
ESP10, 423, 453, 490, 506, 509, 516, , 520
ESP10, 427, 447, 485, 504, 508, 519, , 523
ESP10, 429, 454, 490, 505, 509, 521, , 525
ESP10, 408, 440, 473, 492, 496, 524, , 528
ESP10, 394, 428, 462, 482, 488, 526, , 530
ESP10, 395, 432, 465, 486, 493, 528, , 532
ESP10, 387, 425, 464, 480, 486, 531, , 535
ESP10, 372, 412, 452, 468, 474, 533, , 537
ESP10, 363, 405, 444, 463, 468, 536, , 540
ESP10, 369, 407, 444, 466, 470, 538, , 542
ESP10, 386, 419, 458, 474, 479, 540, , 544
ESP10, 391, 427, 464, 479, 482, 543, , 547
ESP10, 380, 419, 458, 470, 474, 545, , 549
ESP10, 373, 421, 450, 463, 465, 548, , 552
ESP10, 367, 420, 449, 459, 463, 550, , 554
ESP10, 362, 422, 446, 454, 457, 552, , 556
ESP10, 353, 415, 437, 449, 453, 555, , 559
ESP10, 360, 421, 443, 454, 460, 557, , 561
ESP10, 376, 433, 454, 466, 469, 560, , 564
ESP10, 375, 431, 458, 465, 467, 562, , 566
ESP10, 391, 434, 462, 466, 467, 564, , 568
ESP10, 391, 436, 462, 466, 467, 567, , 571
ESP10, 391, 436, 462, 466, 467, 569, , 573
ESP10, 391, 438, 462, 466, 467, 572, , 576
ESP10, 398, 438, 464, 467, 468, 574, , 578
ESP10, 406, 438, 465, 468, 469, 577, , 581
ESP10, 425, 451, 474, 476, 477, 579, , 583
ESP10, 428, 453, 474, 476, 477, 581, , 585
ESP10, 429, 456, 475, 477, 477, 584, , 588
ESP10, 432, 461, 475, 477, 477, 586, , 590
ESP10, 441, 463, 476, 477, 478, 589, , 593
ESP10, 442, 465, 476, 477, 478, 591, , 595
ESP10, 449, 470, 477, 478, 478, 593, , 597
ESP10, 450, 469, 477, 478, 478, 596, , 600
ESP10, 447, 471, 476, 477, 478, 598, , 602
ESP10, 459, 471, 476, 477, 478, 601, , 605
ESP10, 458, 471, 476, 477, 478, 603, , 607
ESP10, 463, 474, 477, 478, 478, 605, , 609
ESP10, 471, 478, 480, 481, 481, 608, , 612
ESP10, 471, 478, 480, 480, 481, 610, , 614
ESP10, 472, 478, 480, 481, 481, 613, , 617
ESP10, 474, 479, 480, 481, 481, 615, , 619
ESP10, 474, 479, 480, 481, 481, 617, , 621
ESP10, 475, 479, 480, 481, 481, 620, , 624
ESP10, 475, 479, 480, 481, 481, 622, , 626
ESP10, 475, 479, 480, 481, 481, 625, , 629
ESP10, 474, 479, 480, 481, 481, 627, , 631
ESP10, 475, 479, 480, 481, 481, 630, , 634
ESP10, 476, 479, 480, 481, 481, 632, , 636
ESP10, 474, 479, 480, 480, 481, 634, , 638
ESP10, 474, 479, 480, 480, 481, 637, , 641
ESP10, 478, 481, 482, 482, 483, 639, , 643
ESP10, 479, 482, 482, 483, 483, 642, , 646
ESP10, 479, 482, 482, 483, 483, 644, , 648
ESP10, 479, 482, 482, 483, 483, 646, , 650
ESP10, 479, 482, 483, 483, 483, 649, , 653
ESP10, 479, 482, 483, 483, 483, 651, , 655
ESP10, 480, 482, 482, 483, 483, 654, , 658
ESP10, 480, 482, 482, 483, 483, 656, , 660
ESP10, 480, 482, 483, 483, 483, 658, , 662
ESP10, 480, 482, 482, 483, 483, 661, , 665
ESP10, 480, 482, 482, 483, 483, 663, , 667
ESP10, 480, 482, 482, 483, 483, 666, , 670
ESP10, 480, 482, 482, 483, 483, 668, , 672
ESP10, 481, 482, 483, 483, 483, 671, , 675
ESP10, 481, 482, 483, 483, 483, 673, , 677
ESP10, 481, 482, 483, 483, 483, 675, , 679
ESP10, 481, 482, 483, 483, 483, 678, , 682
ESP10, 481, 482, 483, 483, 483, 680, , 684
ESP10, 481, 482, 483, 483, 483, 683, , 687
ESP10, 481, 482, 483, 483, 483, 685, , 689
ESP10, 481, 482, 483, 483, 483, 687, , 691
ESP10, 481, 482, 483, 483, 483, 690, , 694
ESP10, 481, 482, 483, 483, 483, 692, , 696
ESP10, 481, 482, 483, 483, 483, 695, , 699
ESP10, 482, 482, 483, 483, 483, 697, , 701
ESP10, 482, 482, 483, 483, 483, 699, , 703
ESP10, 482, 482, 483, 483, 483, 702, , 706
ESP10, 482, 482, 483, 483, 483, 704, , 708
ESP10, 482, 482, 483, 483, 483, 707, , 711
ESP10, 482, 482, 483, 483, 483, 709, , 713
ESP10, 482, 482, 483, 483, 483, 711, , 715
ESP10, 482, 482, 483, 483, 483, 714, , 718
ESP10, 482, 482, 483, 483, 483, 716, , 720
ESP10, 482, 482, 483, 483, 483, 719, , 723
ESP10, 482, 482, 483, 483, 483, 721, , 725
ESP10, 482, 482, 483, 483, 483, 724, , 728
ESP10, 482, 482, 483, 483, 483, 726, , 730
ESP10, 482, 482, 483, 483, 483, 728, , 732
ESP10, 482, 482, 483, 483, 483, 731, , 735
ESP10, 482, 482, 483, 483, 483, 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/LGNO3W_SQIN.ESPF10.csv
LGNO3W_SQIN.ESPF0.csv|2026-07-04
LGNO3W_SQIN.ESPF10.csv|2026-07-04
LGNO3W_SQIN.ESPFM.csv|2026-07-04
APR-SEP
GRANDE RONDE - NEAR PERRY
(
LGNO3
)
Forecasts for Water Year
2027
Official Water Supply
ESP with 10 Days QPF
Ensemble:
2026-07-04
Issued:
2026-07-04
Hide Forecast
Forecast
Period
Forecasts Are in KAF
30 Year
Average
(1991-2020)
90 %
50 %
%
Average
10 %
APR-SEP
86
161
91
335
176
APR-JUL
83
157
91
329
172
JAN-SEP
132
263
96
478
274
JAN-JUL
129
259
96
469
271
OCT-SEP
143
283
97
510
291
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/LGNO3W_SQIN.ESPF10.csv
LGNO3W_SQIN.ESPF0.csv|2026-07-04
LGNO3W_SQIN.ESPF10.csv|2026-07-04
LGNO3W_SQIN.ESPFM.csv|2026-07-04
APR-SEP
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ESP10,ESPM,ESP0
ESP10,ESPM,ESP0
Last Forecast
