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Water Year
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COLUMBIA - ARROW LAKES (HUGH KEENLEYSIDE DAM)
(
ARDQ2
)
Forecasts for Water Year
2026
Official Water Supply
ESP with 10 Days QPF
Ensemble:
2026-06-12
Issued:
2026-06-12
Hide Forecast
Forecast
Period
Forecasts Are in KAF
30 Year
Average
(1991-2020)
90 %
50 %
%
Average
10 %
APR-SEP
24869
25943
108
27423
24059
APR-JUL
19581
20281
108
20980
18779
JAN-SEP
27698
28772
111
30252
25978
JAN-JUL
22411
23110
112
23809
20698
OCT-SEP
30719
31793
109
33273
29084
Experimental Water Supply
HEFS with 15 days EQPF
Ensemble:
2026-06-12
Issued:
2026-06-12
Hide Forecast
APR-SEP
25245
26270
109
27788
24059
APR-JUL
19943
20829
111
21660
18779
JAN-SEP
28074
29099
112
30617
25978
JAN-JUL
22772
23658
114
24489
20698
OCT-SEP
31095
32120
110
33638
29084
Reference
ESP with 0 Days QPF
Ensemble:
2026-06-12
Issued:
2026-06-12
Hide Forecast
APR-SEP
25420
26657
111
27965
24059
APR-JUL
19969
20918
111
21822
18779
JAN-SEP
28249
29486
114
30794
25978
JAN-JUL
22798
23747
115
24651
20698
OCT-SEP
31270
32507
112
33814
29084
Move the mouse over the desired "Forecast Period" to display a graph.
ESP10, 246, 304, 342, 379, 444, 71, , 75
ESP10, 241, 298, 339, 375, 438, 73, , 77
ESP10, 244, 301, 344, 376, 440, 76, , 80
ESP10, 241, 300, 348, 376, 437, 78, , 82
ESP10, 236, 296, 346, 370, 431, 81, , 85
ESP10, 235, 296, 348, 371, 438, 84, , 88
ESP10, 240, 301, 355, 374, 449, 86, , 90
ESP10, 241, 301, 356, 379, 451, 89, , 93
ESP10, 245, 302, 358, 383, 454, 92, , 96
ESP10, 240, 299, 358, 380, 454, 94, , 98
ESP10, 245, 300, 358, 384, 456, 97, , 101
ESP10, 242, 297, 354, 379, 451, 99, , 103
ESP10, 230, 288, 343, 371, 440, 102, , 106
ESP10, 236, 293, 350, 378, 444, 105, , 109
ESP10, 240, 298, 351, 380, 447, 107, , 111
ESP10, 232, 290, 340, 376, 437, 110, , 114
ESP10, 227, 284, 339, 373, 433, 112, , 116
ESP10, 246, 298, 353, 388, 445, 115, , 119
ESP10, 245, 298, 350, 389, 444, 118, , 122
ESP10, 243, 296, 347, 385, 440, 120, , 124
ESP10, 236, 291, 341, 379, 435, 123, , 127
ESP10, 224, 281, 331, 377, 424, 126, , 130
ESP10, 231, 283, 340, 380, 426, 128, , 132
ESP10, 232, 283, 339, 379, 426, 131, , 135
ESP10, 233, 285, 341, 380, 429, 133, , 137
ESP10, 248, 297, 362, 394, 440, 136, , 140
ESP10, 246, 293, 357, 395, 440, 139, , 143
ESP10, 255, 292, 357, 394, 438, 141, , 145
ESP10, 248, 292, 347, 385, 427, 144, , 148
ESP10, 251, 286, 338, 378, 419, 147, , 151
ESP10, 254, 289, 343, 380, 426, 149, , 153
ESP10, 256, 297, 342, 380, 431, 152, , 156
ESP10, 255, 300, 340, 384, 432, 154, , 158
ESP10, 266, 306, 346, 388, 439, 157, , 161
ESP10, 268, 309, 353, 393, 441, 160, , 164
ESP10, 263, 305, 351, 392, 433, 162, , 166
ESP10, 262, 303, 354, 391, 433, 165, , 169
ESP10, 253, 297, 346, 386, 423, 167, , 171
ESP10, 265, 309, 355, 396, 433, 170, , 174
ESP10, 258, 303, 349, 394, 429, 173, , 177
ESP10, 251, 300, 343, 385, 421, 175, , 179
ESP10, 250, 302, 342, 381, 418, 178, , 182
ESP10, 272, 324, 357, 394, 433, 181, , 185
ESP10, 281, 330, 366, 402, 440, 183, , 187
ESP10, 273, 323, 357, 396, 430, 186, , 190
ESP10, 282, 328, 364, 405, 435, 188, , 192
ESP10, 276, 326, 360, 400, 429, 191, , 195
ESP10, 276, 326, 364, 402, 435, 194, , 198
ESP10, 266, 320, 358, 397, 426, 196, , 200
ESP10, 266, 321, 359, 397, 430, 199, , 203
ESP10, 277, 330, 367, 407, 440, 201, , 205
ESP10, 272, 323, 360, 399, 432, 204, , 208
ESP10, 271, 322, 360, 397, 428, 207, , 211
ESP10, 280, 332, 369, 409, 434, 209, , 213
ESP10, 276, 332, 368, 408, 430, 212, , 216
ESP10, 271, 332, 362, 402, 426, 215, , 219
ESP10, 268, 332, 362, 402, 428, 217, , 221
ESP10, 269, 334, 360, 399, 433, 220, , 224
ESP10, 265, 330, 362, 394, 430, 222, , 226
ESP10, 266, 324, 357, 390, 429, 225, , 229
ESP10, 254, 315, 351, 378, 422, 228, , 232
ESP10, 255, 314, 350, 381, 423, 230, , 234
ESP10, 257, 319, 350, 383, 424, 233, , 237
ESP10, 249, 307, 346, 372, 425, 236, , 240
ESP10, 243, 303, 340, 368, 424, 238, , 242
ESP10, 244, 302, 341, 372, 422, 241, , 245
ESP10, 249, 308, 348, 379, 427, 243, , 247
ESP10, 235, 296, 336, 369, 413, 246, , 250
ESP10, 207, 268, 310, 347, 386, 249, , 253
ESP10, 205, 266, 306, 348, 384, 251, , 255
ESP10, 210, 271, 313, 354, 391, 254, , 258
ESP10, 217, 279, 320, 363, 399, 256, , 260
ESP10, 217, 284, 320, 363, 399, 259, , 263
ESP10, 207, 275, 310, 356, 395, 262, , 266
ESP10, 200, 272, 303, 351, 389, 264, , 268
ESP10, 192, 266, 295, 345, 384, 267, , 271
ESP10, 191, 265, 291, 347, 381, 270, , 274
ESP10, 190, 259, 284, 341, 378, 272, , 276
ESP10, 180, 243, 267, 328, 364, 275, , 279
ESP10, 176, 236, 265, 321, 362, 277, , 281
ESP10, 184, 240, 269, 326, 365, 280, , 284
ESP10, 177, 234, 267, 316, 356, 283, , 287
ESP10, 185, 246, 275, 328, 363, 285, , 289
ESP10, 188, 255, 280, 335, 366, 288, , 292
ESP10, 185, 251, 281, 331, 361, 290, , 294
ESP10, 181, 246, 282, 325, 355, 293, , 297
ESP10, 184, 248, 282, 326, 361, 296, , 300
ESP10, 187, 248, 281, 328, 359, 298, , 302
ESP10, 193, 247, 284, 325, 357, 301, , 305
ESP10, 197, 251, 287, 326, 357, 304, , 308
ESP10, 194, 248, 288, 325, 353, 306, , 310
ESP10, 196, 247, 285, 327, 351, 309, , 313
ESP10, 195, 246, 285, 326, 349, 311, , 315
ESP10, 200, 253, 289, 327, 353, 314, , 318
ESP10, 200, 246, 285, 320, 353, 317, , 321
ESP10, 205, 245, 283, 321, 357, 319, , 323
ESP10, 199, 240, 278, 316, 357, 322, , 326
ESP10, 194, 232, 271, 310, 352, 324, , 328
ESP10, 192, 227, 267, 309, 349, 327, , 331
ESP10, 191, 223, 260, 305, 342, 330, , 334
ESP10, 186, 220, 258, 303, 340, 332, , 336
ESP10, 188, 223, 257, 304, 340, 335, , 339
ESP10, 187, 224, 255, 303, 337, 338, , 342
ESP10, 190, 224, 263, 302, 337, 340, , 344
ESP10, 189, 223, 259, 298, 338, 343, , 347
ESP10, 191, 226, 259, 301, 340, 345, , 349
ESP10, 196, 226, 260, 302, 341, 348, , 352
ESP10, 196, 231, 261, 309, 341, 351, , 355
ESP10, 198, 233, 266, 311, 347, 353, , 357
ESP10, 202, 239, 272, 314, 353, 356, , 360
ESP10, 211, 242, 278, 318, 357, 359, , 363
ESP10, 216, 247, 280, 321, 365, 361, , 365
ESP10, 214, 246, 279, 321, 365, 364, , 368
ESP10, 218, 252, 286, 326, 369, 366, , 370
ESP10, 217, 253, 286, 324, 368, 369, , 373
ESP10, 208, 246, 276, 315, 358, 372, , 376
ESP10, 215, 256, 282, 318, 362, 374, , 378
ESP10, 216, 258, 284, 324, 364, 377, , 381
ESP10, 217, 264, 285, 328, 365, 379, , 383
ESP10, 214, 263, 288, 327, 362, 382, , 386
ESP10, 211, 260, 284, 324, 358, 385, , 389
ESP10, 203, 249, 271, 318, 347, 387, , 391
ESP10, 194, 240, 263, 312, 340, 390, , 394
ESP10, 209, 247, 273, 317, 348, 393, , 397
ESP10, 208, 246, 270, 313, 348, 395, , 399
ESP10, 211, 243, 270, 311, 344, 398, , 402
ESP10, 207, 243, 268, 307, 341, 400, , 404
ESP10, 220, 254, 279, 315, 354, 403, , 407
ESP10, 226, 259, 282, 316, 355, 406, , 410
ESP10, 216, 251, 274, 309, 346, 408, , 412
ESP10, 220, 257, 276, 316, 347, 411, , 415
ESP10, 222, 259, 277, 320, 347, 413, , 417
ESP10, 218, 254, 271, 314, 339, 416, , 420
ESP10, 221, 260, 275, 318, 343, 419, , 423
ESP10, 220, 261, 279, 317, 342, 421, , 425
ESP10, 210, 249, 268, 309, 338, 424, , 428
ESP10, 209, 247, 267, 311, 336, 427, , 431
ESP10, 215, 253, 273, 317, 340, 429, , 433
ESP10, 207, 245, 267, 309, 333, 432, , 436
ESP10, 211, 250, 272, 317, 338, 434, , 438
ESP10, 205, 247, 264, 308, 330, 437, , 441
ESP10, 210, 252, 272, 314, 335, 440, , 444
ESP10, 208, 247, 268, 313, 331, 442, , 446
ESP10, 216, 253, 271, 316, 336, 445, , 449
ESP10, 212, 249, 270, 311, 332, 447, , 451
ESP10, 213, 250, 267, 308, 328, 450, , 454
ESP10, 217, 250, 268, 312, 329, 453, , 457
ESP10, 207, 243, 257, 302, 318, 455, , 459
ESP10, 202, 232, 249, 292, 308, 458, , 462
ESP10, 190, 218, 238, 279, 293, 461, , 465
ESP10, 185, 221, 232, 274, 286, 463, , 467
ESP10, 181, 216, 231, 268, 281, 466, , 470
ESP10, 172, 207, 228, 259, 272, 468, , 472
ESP10, 169, 203, 230, 257, 269, 471, , 475
ESP10, 168, 198, 226, 253, 264, 474, , 478
ESP10, 169, 203, 228, 252, 264, 476, , 480
ESP10, 159, 192, 215, 241, 252, 479, , 483
ESP10, 167, 189, 211, 237, 250, 482, , 486
ESP10, 155, 181, 200, 226, 240, 484, , 488
ESP10, 161, 184, 204, 231, 243, 487, , 491
ESP10, 157, 179, 197, 226, 239, 489, , 493
ESP10, 150, 169, 188, 222, 231, 492, , 496
ESP10, 136, 156, 177, 208, 218, 495, , 499
ESP10, 154, 169, 190, 220, 234, 497, , 501
ESP10, 148, 163, 186, 214, 228, 500, , 504
ESP10, 150, 162, 183, 209, 224, 502, , 506
ESP10, 152, 164, 187, 212, 227, 505, , 509
ESP10, 158, 172, 192, 215, 230, 508, , 512
ESP10, 155, 169, 188, 210, 228, 510, , 514
ESP10, 155, 169, 190, 208, 225, 513, , 517
ESP10, 153, 171, 190, 208, 222, 516, , 520
ESP10, 164, 183, 200, 220, 232, 518, , 522
ESP10, 167, 181, 200, 219, 231, 521, , 525
ESP10, 167, 179, 197, 219, 229, 523, , 527
ESP10, 161, 173, 191, 213, 222, 526, , 530
ESP10, 166, 174, 194, 214, 226, 529, , 533
ESP10, 177, 186, 206, 225, 237, 531, , 535
ESP10, 177, 187, 208, 225, 238, 534, , 538
ESP10, 180, 191, 213, 232, 244, 536, , 540
ESP10, 179, 192, 214, 233, 244, 539, , 543
ESP10, 188, 205, 224, 243, 258, 542, , 546
ESP10, 193, 207, 227, 246, 260, 544, , 548
ESP10, 190, 209, 226, 245, 258, 547, , 551
ESP10, 192, 212, 231, 246, 262, 550, , 554
ESP10, 195, 209, 231, 248, 261, 552, , 556
ESP10, 194, 208, 231, 248, 259, 555, , 559
ESP10, 190, 203, 226, 244, 254, 557, , 561
ESP10, 188, 200, 226, 242, 251, 560, , 564
ESP10, 187, 200, 225, 242, 250, 563, , 567
ESP10, 181, 196, 220, 236, 246, 565, , 569
ESP10, 179, 194, 218, 234, 244, 568, , 572
ESP10, 177, 191, 216, 233, 241, 571, , 575
ESP10, 183, 197, 225, 240, 246, 573, , 577
ESP10, 185, 206, 226, 242, 248, 576, , 580
ESP10, 185, 207, 226, 243, 249, 578, , 582
ESP10, 186, 207, 225, 242, 250, 581, , 585
ESP10, 191, 210, 229, 245, 254, 584, , 588
ESP10, 189, 206, 227, 244, 252, 586, , 590
ESP10, 189, 208, 226, 242, 258, 589, , 593
ESP10, 189, 210, 227, 244, 257, 591, , 595
ESP10, 193, 215, 231, 250, 261, 594, , 598
ESP10, 200, 220, 236, 256, 266, 597, , 601
ESP10, 201, 220, 237, 255, 266, 599, , 603
ESP10, 212, 233, 247, 265, 279, 602, , 606
ESP10, 215, 236, 249, 266, 283, 605, , 609
ESP10, 215, 236, 249, 267, 284, 607, , 611
ESP10, 213, 234, 250, 265, 283, 610, , 614
ESP10, 215, 235, 250, 266, 284, 612, , 616
ESP10, 222, 239, 255, 269, 288, 615, , 619
ESP10, 221, 240, 253, 268, 286, 618, , 622
ESP10, 222, 241, 257, 271, 287, 620, , 624
ESP10, 224, 244, 260, 274, 289, 623, , 627
ESP10, 229, 247, 261, 275, 291, 625, , 629
ESP10, 228, 247, 261, 277, 290, 628, , 632
ESP10, 227, 248, 260, 279, 290, 631, , 635
ESP10, 225, 248, 261, 278, 292, 633, , 637
ESP10, 228, 250, 264, 281, 294, 636, , 640
ESP10, 228, 251, 266, 281, 293, 639, , 643
ESP10, 228, 250, 267, 280, 294, 641, , 645
ESP10, 227, 252, 267, 280, 293, 644, , 648
ESP10, 225, 249, 265, 278, 289, 646, , 650
ESP10, 223, 248, 264, 277, 290, 649, , 653
ESP10, 218, 243, 260, 275, 286, 652, , 656
ESP10, 216, 241, 258, 274, 287, 654, , 658
ESP10, 217, 242, 260, 276, 288, 657, , 661
ESP10, 216, 243, 259, 276, 285, 659, , 663
ESP10, 212, 240, 256, 274, 284, 662, , 666
ESP10, 222, 247, 262, 280, 290, 665, , 669
ESP10, 223, 248, 266, 280, 290, 667, , 671
ESP10, 232, 256, 274, 289, 301, 670, , 674
ESP10, 229, 252, 270, 285, 298, 673, , 677
ESP10, 226, 247, 266, 279, 293, 675, , 679
ESP10, 228, 251, 268, 280, 293, 678, , 682
ESP10, 227, 250, 267, 280, 291, 680, , 684
ESP10, 231, 252, 270, 283, 293, 683, , 687
ESP10, 221, 242, 260, 272, 282, 686, , 690
ESP10, 226, 247, 266, 279, 286, 688, , 692
ESP10, 229, 246, 262, 275, 286, 691, , 695
ESP10, 238, 254, 271, 286, 294, 694, , 698
ESP10, 229, 245, 261, 276, 287, 696, , 700
ESP10, 230, 240, 257, 274, 286, 699, , 703
ESP10, 227, 238, 254, 272, 282, 701, , 705
ESP10, 234, 243, 261, 278, 289, 704, , 708
ESP10, 232, 243, 260, 276, 286, 707, , 711
ESP10, 235, 247, 262, 278, 291, 709, , 713
ESP10, 242, 253, 269, 283, 295, 712, , 716
ESP10, 246, 258, 276, 290, 299, 714, , 718
ESP10, 244, 256, 276, 290, 299, 717, , 721
ESP10, 241, 254, 273, 287, 295, 720, , 724
ESP10, 238, 251, 273, 285, 292, 722, , 726
ESP10, 254, 266, 286, 300, 306, 725, , 729
ESP10, 255, 268, 286, 300, 309, 728, , 732
ESP10, 264, 277, 295, 307, 317, 730, , 734
ESP10, 259, 273, 290, 304, 313, 733, , 737
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Data Files
/chpsesp/ensemble/watersupply/ARDQ2IW_SQIN.ESPF10.csv
ARDQ2IW_SQIN.ESPF0.csv|2026-06-12
ARDQ2IW_SQIN.ESPF10.csv|2026-06-12
ARDQ2IW_SQIN.ESPFM.csv|2026-06-12
APR-SEP
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ESP10,ESPM,ESP0
ESP10,ESPM,ESP0
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