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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:
2026-08-15
Issued:
2026-08-15
Hide Forecast
Forecast
Period
Forecasts Are in KAF
30 Year
Average
(1991-2020)
90 %
50 %
%
Average
10 %
APR-SEP
51
51
29
52
176
APR-JUL
51
51
30
51
172
APR-AUG
51
51
29
51
174
JAN-SEP
98
98
36
99
274
JAN-JUL
98
98
36
98
271
OCT-SEP
115
115
40
116
291
Experimental Water Supply
HEFS with 15 days EQPF
Ensemble:
2026-08-15
Issued:
2026-08-15
Hide Forecast
APR-SEP
51
51
29
52
176
APR-JUL
51
51
30
51
172
APR-AUG
51
51
29
51
174
JAN-SEP
98
98
36
99
274
JAN-JUL
98
98
36
98
271
OCT-SEP
115
115
40
116
291
Reference
ESP with 0 Days QPF
Ensemble:
2026-08-15
Issued:
2026-08-15
Hide Forecast
APR-SEP
51
52
29
52
176
APR-JUL
51
51
30
51
172
APR-AUG
51
51
29
52
174
JAN-SEP
98
98
36
99
274
JAN-JUL
98
98
36
98
271
OCT-SEP
115
116
40
116
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, 72, , 76
ESP10, 232, 304, 391, 425, 457, 74, , 78
ESP10, 233, 306, 394, 426, 458, 76, , 80
ESP10, 234, 306, 394, 426, 458, 78, , 82
ESP10, 233, 302, 392, 424, 456, 81, , 85
ESP10, 233, 303, 392, 424, 457, 83, , 87
ESP10, 234, 305, 395, 425, 458, 85, , 89
ESP10, 233, 304, 394, 425, 457, 87, , 91
ESP10, 233, 303, 393, 424, 457, 89, , 93
ESP10, 235, 305, 392, 424, 457, 91, , 95
ESP10, 237, 307, 396, 429, 462, 93, , 97
ESP10, 238, 306, 394, 428, 460, 95, , 99
ESP10, 238, 306, 393, 430, 460, 97, , 101
ESP10, 234, 303, 391, 425, 459, 99, , 103
ESP10, 228, 302, 386, 419, 456, 102, , 106
ESP10, 227, 301, 386, 422, 456, 104, , 108
ESP10, 228, 303, 386, 423, 457, 106, , 110
ESP10, 234, 312, 391, 429, 461, 108, , 112
ESP10, 237, 313, 393, 431, 463, 110, , 114
ESP10, 236, 313, 390, 429, 461, 112, , 116
ESP10, 239, 315, 393, 430, 464, 114, , 118
ESP10, 238, 314, 393, 427, 462, 116, , 120
ESP10, 241, 322, 400, 433, 470, 118, , 122
ESP10, 242, 325, 404, 435, 473, 120, , 124
ESP10, 242, 326, 404, 434, 473, 122, , 126
ESP10, 242, 325, 405, 434, 472, 125, , 129
ESP10, 242, 325, 406, 435, 477, 127, , 131
ESP10, 241, 324, 403, 435, 479, 129, , 133
ESP10, 238, 323, 399, 428, 475, 131, , 135
ESP10, 239, 324, 399, 433, 476, 133, , 137
ESP10, 240, 324, 398, 432, 476, 135, , 139
ESP10, 241, 325, 399, 437, 479, 137, , 141
ESP10, 241, 327, 400, 439, 480, 139, , 143
ESP10, 243, 327, 400, 441, 481, 141, , 145
ESP10, 245, 327, 402, 442, 482, 143, , 147
ESP10, 245, 327, 402, 441, 483, 145, , 149
ESP10, 243, 329, 403, 443, 483, 148, , 152
ESP10, 249, 331, 402, 443, 482, 150, , 154
ESP10, 249, 331, 402, 446, 481, 152, , 156
ESP10, 256, 336, 406, 450, 484, 154, , 158
ESP10, 260, 340, 409, 454, 487, 156, , 160
ESP10, 256, 338, 407, 450, 486, 158, , 162
ESP10, 267, 345, 410, 455, 490, 160, , 164
ESP10, 266, 344, 410, 456, 489, 162, , 166
ESP10, 261, 344, 408, 452, 488, 164, , 168
ESP10, 273, 354, 418, 460, 493, 166, , 170
ESP10, 275, 361, 421, 464, 495, 169, , 173
ESP10, 276, 361, 421, 463, 494, 171, , 175
ESP10, 271, 362, 418, 458, 492, 173, , 177
ESP10, 267, 357, 414, 453, 489, 175, , 179
ESP10, 262, 351, 409, 449, 486, 177, , 181
ESP10, 267, 357, 416, 455, 489, 179, , 183
ESP10, 271, 362, 422, 460, 492, 181, , 185
ESP10, 259, 350, 414, 452, 485, 183, , 187
ESP10, 270, 359, 421, 462, 492, 185, , 189
ESP10, 266, 352, 415, 458, 488, 187, , 191
ESP10, 278, 363, 422, 462, 495, 189, , 193
ESP10, 278, 360, 420, 465, 494, 192, , 196
ESP10, 262, 349, 404, 453, 484, 194, , 198
ESP10, 245, 327, 388, 433, 467, 196, , 200
ESP10, 258, 341, 398, 445, 476, 198, , 202
ESP10, 254, 333, 391, 441, 471, 200, , 204
ESP10, 250, 324, 385, 429, 464, 202, , 206
ESP10, 261, 331, 390, 441, 471, 204, , 208
ESP10, 257, 324, 387, 429, 466, 206, , 210
ESP10, 258, 323, 389, 429, 466, 208, , 212
ESP10, 268, 333, 393, 443, 474, 210, , 214
ESP10, 270, 331, 391, 441, 474, 212, , 216
ESP10, 267, 330, 392, 435, 472, 215, , 219
ESP10, 263, 327, 391, 433, 469, 217, , 221
ESP10, 259, 326, 388, 426, 467, 219, , 223
ESP10, 249, 320, 382, 421, 461, 221, , 225
ESP10, 259, 326, 387, 423, 465, 223, , 227
ESP10, 259, 327, 388, 423, 465, 225, , 229
ESP10, 257, 325, 386, 425, 463, 227, , 231
ESP10, 253, 322, 383, 423, 459, 229, , 233
ESP10, 255, 324, 388, 428, 461, 231, , 235
ESP10, 279, 347, 405, 445, 477, 233, , 237
ESP10, 266, 340, 388, 429, 462, 236, , 240
ESP10, 269, 338, 385, 426, 460, 238, , 242
ESP10, 271, 343, 387, 427, 463, 240, , 244
ESP10, 283, 353, 399, 437, 475, 242, , 246
ESP10, 287, 351, 396, 435, 473, 244, , 248
ESP10, 285, 348, 394, 435, 470, 246, , 250
ESP10, 285, 347, 392, 435, 469, 248, , 252
ESP10, 291, 352, 396, 440, 473, 250, , 254
ESP10, 291, 353, 396, 439, 471, 252, , 256
ESP10, 293, 352, 396, 438, 471, 254, , 258
ESP10, 294, 354, 399, 439, 471, 256, , 260
ESP10, 292, 354, 403, 439, 471, 259, , 263
ESP10, 298, 353, 403, 440, 471, 261, , 265
ESP10, 303, 358, 408, 444, 474, 263, , 267
ESP10, 303, 358, 409, 444, 474, 265, , 269
ESP10, 301, 355, 410, 442, 477, 267, , 271
ESP10, 303, 359, 412, 446, 478, 269, , 273
ESP10, 286, 345, 399, 433, 467, 271, , 275
ESP10, 296, 354, 406, 442, 476, 273, , 277
ESP10, 297, 357, 407, 444, 478, 275, , 279
ESP10, 304, 360, 410, 445, 479, 277, , 281
ESP10, 308, 361, 411, 448, 481, 279, , 283
ESP10, 309, 361, 411, 451, 481, 282, , 286
ESP10, 310, 366, 411, 455, 481, 284, , 288
ESP10, 312, 369, 412, 457, 481, 286, , 290
ESP10, 325, 374, 414, 458, 482, 288, , 292
ESP10, 325, 376, 413, 457, 481, 290, , 294
ESP10, 324, 376, 413, 458, 481, 292, , 296
ESP10, 326, 377, 417, 458, 482, 294, , 298
ESP10, 324, 376, 417, 457, 481, 296, , 300
ESP10, 327, 381, 422, 459, 483, 298, , 302
ESP10, 326, 382, 424, 461, 483, 300, , 304
ESP10, 330, 385, 427, 462, 485, 303, , 307
ESP10, 330, 385, 428, 462, 485, 305, , 309
ESP10, 332, 387, 430, 464, 486, 307, , 311
ESP10, 334, 386, 432, 465, 486, 309, , 313
ESP10, 340, 387, 434, 466, 487, 311, , 315
ESP10, 341, 388, 435, 469, 489, 313, , 317
ESP10, 341, 394, 436, 469, 488, 315, , 319
ESP10, 341, 393, 438, 469, 488, 317, , 321
ESP10, 341, 395, 440, 469, 489, 319, , 323
ESP10, 342, 396, 443, 470, 490, 321, , 325
ESP10, 342, 396, 444, 471, 490, 323, , 327
ESP10, 341, 394, 443, 469, 490, 326, , 330
ESP10, 338, 389, 442, 466, 490, 328, , 332
ESP10, 342, 391, 444, 465, 489, 330, , 334
ESP10, 348, 397, 448, 469, 493, 332, , 336
ESP10, 341, 389, 443, 467, 490, 334, , 338
ESP10, 340, 392, 442, 466, 490, 336, , 340
ESP10, 335, 388, 438, 462, 486, 338, , 342
ESP10, 329, 383, 433, 459, 483, 340, , 344
ESP10, 330, 383, 434, 461, 485, 342, , 346
ESP10, 331, 384, 434, 464, 488, 344, , 348
ESP10, 333, 386, 436, 465, 489, 346, , 350
ESP10, 334, 386, 438, 466, 492, 349, , 353
ESP10, 332, 384, 437, 466, 492, 351, , 355
ESP10, 327, 378, 430, 463, 488, 353, , 357
ESP10, 325, 377, 429, 463, 486, 355, , 359
ESP10, 329, 387, 431, 466, 491, 357, , 361
ESP10, 322, 379, 424, 462, 486, 359, , 363
ESP10, 336, 398, 440, 473, 497, 361, , 365
ESP10, 332, 393, 436, 471, 496, 363, , 367
ESP10, 337, 400, 441, 475, 499, 365, , 369
ESP10, 340, 407, 444, 477, 501, 367, , 371
ESP10, 339, 406, 443, 477, 500, 370, , 374
ESP10, 337, 404, 444, 477, 499, 372, , 376
ESP10, 340, 410, 450, 482, 501, 374, , 378
ESP10, 339, 411, 451, 483, 500, 376, , 380
ESP10, 330, 402, 443, 477, 497, 378, , 382
ESP10, 326, 402, 443, 474, 496, 380, , 384
ESP10, 321, 396, 441, 471, 492, 382, , 386
ESP10, 332, 410, 451, 480, 499, 384, , 388
ESP10, 335, 410, 450, 480, 499, 386, , 390
ESP10, 333, 406, 447, 478, 497, 388, , 392
ESP10, 328, 398, 440, 472, 492, 390, , 394
ESP10, 335, 405, 446, 483, 496, 393, , 397
ESP10, 333, 404, 442, 480, 495, 395, , 399
ESP10, 333, 403, 444, 478, 495, 397, , 401
ESP10, 328, 396, 441, 473, 491, 399, , 403
ESP10, 331, 397, 442, 477, 492, 401, , 405
ESP10, 339, 406, 451, 485, 499, 403, , 407
ESP10, 340, 397, 444, 478, 493, 405, , 409
ESP10, 330, 384, 432, 468, 485, 407, , 411
ESP10, 341, 401, 444, 479, 496, 409, , 413
ESP10, 359, 416, 455, 490, 505, 411, , 415
ESP10, 361, 417, 459, 490, 506, 413, , 417
ESP10, 369, 420, 463, 492, 507, 416, , 420
ESP10, 367, 415, 461, 488, 504, 418, , 422
ESP10, 369, 423, 465, 490, 506, 420, , 424
ESP10, 380, 433, 471, 497, 508, 422, , 426
ESP10, 390, 436, 475, 499, 509, 424, , 428
ESP10, 388, 434, 473, 499, 508, 426, , 430
ESP10, 388, 437, 477, 501, 509, 428, , 432
ESP10, 389, 434, 477, 500, 509, 430, , 434
ESP10, 369, 418, 459, 487, 497, 432, , 436
ESP10, 378, 426, 465, 491, 500, 434, , 438
ESP10, 391, 432, 475, 496, 504, 437, , 441
ESP10, 389, 426, 472, 492, 501, 439, , 443
ESP10, 391, 425, 472, 489, 499, 441, , 445
ESP10, 398, 435, 480, 494, 504, 443, , 447
ESP10, 403, 438, 484, 496, 507, 445, , 449
ESP10, 406, 438, 485, 498, 505, 447, , 451
ESP10, 410, 444, 485, 500, 506, 449, , 453
ESP10, 414, 450, 487, 504, 509, 451, , 455
ESP10, 415, 450, 487, 504, 507, 453, , 457
ESP10, 415, 449, 485, 504, 508, 455, , 459
ESP10, 423, 453, 490, 506, 509, 457, , 461
ESP10, 427, 447, 485, 504, 508, 460, , 464
ESP10, 429, 454, 490, 505, 509, 462, , 466
ESP10, 408, 440, 473, 492, 496, 464, , 468
ESP10, 394, 428, 462, 482, 488, 466, , 470
ESP10, 395, 432, 465, 486, 493, 468, , 472
ESP10, 387, 425, 464, 480, 486, 470, , 474
ESP10, 372, 412, 452, 468, 474, 472, , 476
ESP10, 363, 405, 444, 463, 468, 474, , 478
ESP10, 369, 407, 444, 466, 470, 476, , 480
ESP10, 386, 419, 458, 474, 479, 478, , 482
ESP10, 391, 427, 464, 479, 482, 480, , 484
ESP10, 380, 419, 458, 470, 474, 483, , 487
ESP10, 373, 421, 450, 463, 465, 485, , 489
ESP10, 367, 420, 449, 459, 463, 487, , 491
ESP10, 362, 422, 446, 454, 457, 489, , 493
ESP10, 353, 415, 437, 449, 453, 491, , 495
ESP10, 360, 421, 443, 454, 460, 493, , 497
ESP10, 376, 433, 454, 466, 469, 495, , 499
ESP10, 375, 431, 458, 465, 467, 497, , 501
ESP10, 391, 434, 462, 466, 467, 499, , 503
ESP10, 391, 436, 462, 466, 467, 501, , 505
ESP10, 391, 436, 462, 466, 467, 504, , 508
ESP10, 391, 438, 462, 466, 467, 506, , 510
ESP10, 398, 438, 464, 467, 468, 508, , 512
ESP10, 406, 438, 465, 468, 469, 510, , 514
ESP10, 425, 451, 474, 476, 477, 512, , 516
ESP10, 428, 453, 474, 476, 477, 514, , 518
ESP10, 429, 456, 475, 477, 477, 516, , 520
ESP10, 432, 461, 475, 477, 477, 518, , 522
ESP10, 441, 463, 476, 477, 478, 520, , 524
ESP10, 442, 465, 476, 477, 478, 522, , 526
ESP10, 449, 470, 477, 478, 478, 524, , 528
ESP10, 450, 469, 477, 478, 478, 527, , 531
ESP10, 447, 471, 476, 477, 478, 529, , 533
ESP10, 459, 471, 476, 477, 478, 531, , 535
ESP10, 458, 471, 476, 477, 478, 533, , 537
ESP10, 463, 474, 477, 478, 478, 535, , 539
ESP10, 471, 478, 480, 481, 481, 537, , 541
ESP10, 471, 478, 480, 480, 481, 539, , 543
ESP10, 472, 478, 480, 481, 481, 541, , 545
ESP10, 474, 479, 480, 481, 481, 543, , 547
ESP10, 474, 479, 480, 481, 481, 545, , 549
ESP10, 475, 479, 480, 481, 481, 547, , 551
ESP10, 475, 479, 480, 481, 481, 550, , 554
ESP10, 475, 479, 480, 481, 481, 552, , 556
ESP10, 474, 479, 480, 481, 481, 554, , 558
ESP10, 475, 479, 480, 481, 481, 556, , 560
ESP10, 476, 479, 480, 481, 481, 558, , 562
ESP10, 474, 479, 480, 480, 481, 560, , 564
ESP10, 474, 479, 480, 480, 481, 562, , 566
ESP10, 478, 481, 482, 482, 483, 564, , 568
ESP10, 479, 482, 482, 483, 483, 566, , 570
ESP10, 479, 482, 482, 483, 483, 568, , 572
ESP10, 479, 482, 482, 483, 483, 571, , 575
ESP10, 479, 482, 483, 483, 483, 573, , 577
ESP10, 479, 482, 483, 483, 483, 575, , 579
ESP10, 480, 482, 482, 483, 483, 577, , 581
ESP10, 480, 482, 482, 483, 483, 579, , 583
ESP10, 480, 482, 483, 483, 483, 581, , 585
ESP10, 480, 482, 482, 483, 483, 583, , 587
ESP10, 480, 482, 482, 483, 483, 585, , 589
ESP10, 480, 482, 482, 483, 483, 587, , 591
ESP10, 480, 482, 482, 483, 483, 589, , 593
ESP10, 481, 482, 483, 483, 483, 591, , 595
ESP10, 481, 482, 483, 483, 483, 594, , 598
ESP10, 481, 482, 483, 483, 483, 596, , 600
ESP10, 481, 482, 483, 483, 483, 598, , 602
ESP10, 481, 482, 483, 483, 483, 600, , 604
ESP10, 481, 482, 483, 483, 483, 602, , 606
ESP10, 481, 482, 483, 483, 483, 604, , 608
ESP10, 481, 482, 483, 483, 483, 606, , 610
ESP10, 481, 482, 483, 483, 483, 608, , 612
ESP10, 481, 482, 483, 483, 483, 610, , 614
ESP10, 481, 482, 483, 483, 483, 612, , 616
ESP10, 482, 482, 483, 483, 483, 614, , 618
ESP10, 482, 482, 483, 483, 483, 617, , 621
ESP10, 482, 482, 483, 483, 483, 619, , 623
ESP10, 482, 482, 483, 483, 483, 621, , 625
ESP10, 482, 482, 483, 483, 483, 623, , 627
ESP10, 482, 482, 483, 483, 483, 625, , 629
ESP10, 482, 482, 483, 483, 483, 627, , 631
ESP10, 482, 482, 483, 483, 483, 629, , 633
ESP10, 482, 482, 483, 483, 483, 631, , 635
ESP10, 482, 482, 483, 483, 483, 633, , 637
ESP10, 482, 482, 483, 483, 483, 635, , 639
ESP10, 482, 482, 483, 483, 483, 638, , 642
ESP10, 482, 482, 483, 483, 483, 640, , 644
ESP10, 482, 482, 483, 483, 483, 642, , 646
ESP10, 482, 482, 483, 483, 483, 644, , 648
ESP10, 482, 482, 483, 483, 483, 646, , 650
ESP10, 482, 482, 483, 483, 483, 648, , 652
ESP10, 482, 482, 483, 483, 483, 650, , 654
ESP10, 482, 482, 483, 483, 483, 652, , 656
ESP10, 482, 482, 483, 483, 483, 654, , 658
ESP10, 482, 482, 483, 483, 483, 656, , 660
ESP10, 482, 482, 482, 483, 483, 658, , 662
ESP10, 482, 482, 482, 483, 483, 661, , 665
ESP10, 482, 482, 482, 483, 483, 663, , 667
ESP10, 482, 482, 482, 483, 483, 665, , 669
ESP10, 482, 482, 482, 483, 483, 667, , 671
ESP10, 482, 482, 482, 483, 483, 669, , 673
ESP10, 481, 482, 482, 483, 483, 671, , 675
ESP10, 481, 482, 482, 483, 483, 673, , 677
ESP10, 481, 482, 482, 483, 483, 675, , 679
ESP10, 481, 482, 482, 483, 483, 677, , 681
ESP10, 482, 482, 482, 483, 483, 679, , 683
ESP10, 482, 482, 482, 483, 483, 681, , 685
ESP10, 482, 482, 482, 483, 483, 684, , 688
ESP10, 482, 482, 482, 483, 483, 686, , 690
ESP10, 482, 482, 483, 483, 483, 688, , 692
ESP10, 482, 482, 482, 483, 483, 690, , 694
ESP10, 482, 482, 482, 483, 483, 692, , 696
ESP10, 482, 482, 482, 483, 483, 694, , 698
ESP10, 482, 482, 482, 483, 483, 696, , 700
ESP10, 482, 482, 482, 483, 483, 698, , 702
ESP10, 482, 482, 482, 483, 483, 700, , 704
ESP10, 482, 482, 483, 483, 483, 702, , 706
ESP10, 482, 482, 483, 483, 483, 705, , 709
ESP10, 482, 482, 482, 483, 483, 707, , 711
ESP10, 482, 482, 482, 483, 483, 709, , 713
ESP10, 482, 482, 482, 483, 483, 711, , 715
ESP10, 482, 482, 482, 483, 483, 713, , 717
ESP10, 482, 482, 482, 483, 483, 715, , 719
ESP10, 482, 482, 483, 483, 483, 717, , 721
ESP10, 482, 482, 483, 483, 483, 719, , 723
ESP10, 482, 482, 482, 483, 483, 721, , 725
ESP10, 482, 482, 483, 483, 483, 723, , 727
ESP10, 482, 482, 482, 483, 483, 725, , 729
ESP10, 482, 482, 483, 483, 483, 728, , 732
ESP10, 482, 482, 483, 483, 483, 730, , 734
ESP10, 482, 482, 483, 483, 483, 732, , 736
ESP10, 482, 482, 483, 483, 483, 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/LGNO3W_SQIN.ESPF10.csv
LGNO3W_SQIN.ESPF0.csv|2026-08-15
LGNO3W_SQIN.ESPF10.csv|2026-08-15
LGNO3W_SQIN.ESPFM.csv|2026-08-15
APR-SEP
GRANDE RONDE - NEAR PERRY
(
LGNO3
)
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
87
161
92
335
176
APR-JUL
83
157
91
328
172
APR-AUG
85
159
91
332
174
JAN-SEP
130
262
96
477
274
JAN-JUL
127
258
95
469
271
OCT-SEP
142
278
96
506
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|2026-08-15
LGNO3W_SQIN.ESPF10.csv|2026-08-15
LGNO3W_SQIN.ESPFM.csv|2026-08-15
APR-SEP
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ESP10,ESPM,ESP0
ESP10,ESPM,ESP0
Last Forecast
