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Water Year
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COLUMBIA - ARROW LAKES (HUGH KEENLEYSIDE DAM)
(
ARDQ2
)
Forecasts for Water Year
2026
Natural Forecast
ESP with 10 Days QPF
Ensemble:
2026-03-04
Issued:
2026-03-04
Hide Forecast
Forecast
Period
Forecasts Are in KAF
30 Year
Average
(1991-2020)
90 %
50 %
%
Average
10 %
APR-SEP
26993
28811
120
31684
23959
APR-JUL
20347
22626
122
24953
18539
JAN-SEP
29493
31418
122
34244
25830
JAN-JUL
22741
25158
123
27460
20410
OCT-SEP
32633
34558
119
37384
29024
Experimental
HEFS with 15 days EQPF
Ensemble:
2026-03-04
Issued:
2026-03-04
Hide Forecast
APR-SEP
25746
28827
120
31772
23959
APR-JUL
19706
22058
119
24948
18539
JAN-SEP
28135
31199
121
34258
25830
JAN-JUL
22056
24452
120
27529
20410
OCT-SEP
31275
34339
118
37398
29024
Reference
ESP with 0 Days QPF
Ensemble:
2026-03-04
Issued:
2026-03-04
Hide Forecast
APR-SEP
24832
27891
116
30497
23959
APR-JUL
18718
21286
115
24009
18539
JAN-SEP
27185
30120
117
32958
25830
JAN-JUL
20952
23649
116
26496
20410
OCT-SEP
30325
33260
115
36097
29024
Move the mouse over the desired "Forecast Period" to display a graph.
ESP10, 222, 285, 327, 366, 437, 72, , 76
ESP10, 217, 279, 323, 362, 431, 77, , 81
ESP10, 220, 281, 329, 364, 433, 81, , 85
ESP10, 217, 281, 333, 363, 430, 85, , 89
ESP10, 211, 277, 331, 357, 424, 89, , 93
ESP10, 210, 277, 333, 359, 431, 94, , 98
ESP10, 215, 281, 341, 362, 442, 98, , 102
ESP10, 216, 282, 342, 366, 445, 102, , 106
ESP10, 220, 283, 345, 371, 448, 107, , 111
ESP10, 216, 280, 344, 368, 448, 111, , 115
ESP10, 221, 281, 344, 372, 451, 115, , 119
ESP10, 217, 278, 340, 367, 445, 120, , 124
ESP10, 204, 268, 328, 358, 433, 124, , 128
ESP10, 211, 273, 335, 366, 438, 128, , 132
ESP10, 215, 279, 337, 368, 441, 132, , 136
ESP10, 206, 269, 324, 363, 430, 137, , 141
ESP10, 201, 264, 323, 361, 425, 141, , 145
ESP10, 222, 278, 338, 376, 439, 145, , 149
ESP10, 220, 278, 336, 377, 437, 150, , 154
ESP10, 218, 276, 331, 373, 434, 154, , 158
ESP10, 210, 270, 325, 367, 428, 158, , 162
ESP10, 197, 259, 315, 364, 416, 162, , 166
ESP10, 205, 262, 324, 367, 417, 167, , 171
ESP10, 206, 262, 324, 367, 418, 171, , 175
ESP10, 208, 264, 326, 367, 421, 175, , 179
ESP10, 224, 277, 348, 383, 433, 180, , 184
ESP10, 222, 273, 343, 384, 433, 184, , 188
ESP10, 232, 272, 343, 383, 430, 188, , 192
ESP10, 224, 272, 331, 373, 419, 193, , 197
ESP10, 226, 265, 322, 365, 411, 197, , 201
ESP10, 231, 269, 327, 368, 417, 201, , 205
ESP10, 233, 277, 326, 368, 423, 205, , 209
ESP10, 232, 280, 324, 372, 425, 210, , 214
ESP10, 243, 287, 330, 376, 432, 214, , 218
ESP10, 246, 290, 338, 381, 434, 218, , 222
ESP10, 240, 286, 336, 381, 426, 223, , 227
ESP10, 239, 284, 339, 380, 425, 227, , 231
ESP10, 229, 277, 331, 374, 415, 231, , 235
ESP10, 242, 291, 340, 385, 426, 236, , 240
ESP10, 235, 284, 334, 383, 421, 240, , 244
ESP10, 227, 281, 328, 373, 413, 244, , 248
ESP10, 226, 283, 326, 368, 409, 248, , 252
ESP10, 250, 307, 342, 383, 425, 253, , 257
ESP10, 260, 313, 352, 392, 433, 257, , 261
ESP10, 251, 305, 343, 385, 422, 261, , 265
ESP10, 261, 312, 350, 395, 427, 266, , 270
ESP10, 255, 309, 346, 389, 421, 270, , 274
ESP10, 254, 309, 350, 392, 428, 274, , 278
ESP10, 244, 302, 344, 386, 418, 278, , 282
ESP10, 243, 303, 344, 387, 422, 283, , 287
ESP10, 255, 313, 354, 397, 433, 287, , 291
ESP10, 251, 305, 345, 388, 424, 291, , 295
ESP10, 249, 305, 345, 386, 420, 296, , 300
ESP10, 259, 316, 356, 400, 426, 300, , 304
ESP10, 255, 315, 355, 398, 421, 304, , 308
ESP10, 248, 315, 348, 391, 418, 309, , 313
ESP10, 246, 315, 348, 391, 420, 313, , 317
ESP10, 246, 318, 346, 388, 426, 317, , 321
ESP10, 243, 313, 348, 383, 422, 321, , 325
ESP10, 243, 307, 343, 378, 421, 326, , 330
ESP10, 230, 296, 336, 365, 413, 330, , 334
ESP10, 232, 295, 335, 369, 414, 334, , 338
ESP10, 233, 301, 336, 370, 415, 339, , 343
ESP10, 225, 288, 330, 359, 417, 343, , 347
ESP10, 218, 284, 324, 355, 415, 347, , 351
ESP10, 219, 283, 325, 358, 413, 351, , 355
ESP10, 225, 290, 333, 366, 418, 356, , 360
ESP10, 209, 276, 320, 355, 403, 360, , 364
ESP10, 180, 246, 291, 331, 374, 364, , 368
ESP10, 177, 243, 287, 333, 372, 369, , 373
ESP10, 183, 249, 294, 339, 380, 373, , 377
ESP10, 190, 258, 303, 349, 388, 377, , 381
ESP10, 189, 263, 302, 350, 388, 382, , 386
ESP10, 179, 254, 292, 341, 384, 386, , 390
ESP10, 172, 250, 284, 336, 378, 390, , 394
ESP10, 162, 244, 275, 329, 372, 394, , 398
ESP10, 161, 242, 270, 332, 369, 399, , 403
ESP10, 161, 236, 264, 325, 366, 403, , 407
ESP10, 150, 218, 245, 310, 351, 407, , 411
ESP10, 145, 211, 242, 303, 348, 412, , 416
ESP10, 154, 215, 247, 308, 351, 416, , 420
ESP10, 147, 209, 244, 298, 342, 420, , 424
ESP10, 154, 221, 253, 311, 349, 424, , 428
ESP10, 158, 231, 259, 318, 352, 429, , 433
ESP10, 155, 227, 260, 314, 347, 433, , 437
ESP10, 150, 221, 260, 307, 340, 437, , 441
ESP10, 154, 223, 261, 309, 346, 442, , 446
ESP10, 158, 224, 260, 311, 345, 446, , 450
ESP10, 164, 223, 263, 307, 342, 450, , 454
ESP10, 168, 227, 266, 309, 343, 455, , 459
ESP10, 165, 224, 267, 307, 338, 459, , 463
ESP10, 168, 222, 264, 310, 335, 463, , 467
ESP10, 166, 222, 263, 308, 334, 467, , 471
ESP10, 171, 230, 268, 310, 339, 472, , 476
ESP10, 172, 222, 263, 302, 338, 476, , 480
ESP10, 176, 220, 261, 304, 342, 480, , 484
ESP10, 170, 215, 256, 298, 343, 485, , 489
ESP10, 164, 206, 249, 292, 337, 489, , 493
ESP10, 163, 201, 244, 291, 334, 493, , 497
ESP10, 162, 196, 237, 286, 326, 497, , 501
ESP10, 156, 193, 234, 283, 324, 502, , 506
ESP10, 158, 196, 233, 285, 324, 506, , 510
ESP10, 157, 198, 231, 284, 321, 510, , 514
ESP10, 160, 197, 240, 282, 321, 515, , 519
ESP10, 159, 196, 236, 279, 322, 519, , 523
ESP10, 162, 199, 235, 281, 324, 523, , 527
ESP10, 167, 200, 236, 282, 325, 528, , 532
ESP10, 167, 206, 238, 290, 325, 532, , 536
ESP10, 169, 207, 243, 293, 331, 536, , 540
ESP10, 174, 215, 250, 296, 338, 540, , 544
ESP10, 184, 218, 256, 300, 343, 545, , 549
ESP10, 189, 223, 259, 303, 351, 549, , 553
ESP10, 187, 221, 258, 303, 351, 553, , 557
ESP10, 191, 229, 265, 308, 356, 558, , 562
ESP10, 190, 229, 265, 307, 354, 562, , 566
ESP10, 181, 221, 255, 296, 343, 566, , 570
ESP10, 188, 233, 261, 300, 348, 571, , 575
ESP10, 189, 235, 263, 307, 351, 575, , 579
ESP10, 190, 241, 264, 311, 351, 579, , 583
ESP10, 187, 240, 267, 310, 348, 583, , 587
ESP10, 184, 237, 263, 307, 344, 588, , 592
ESP10, 175, 224, 249, 300, 332, 592, , 596
ESP10, 166, 215, 240, 293, 324, 596, , 600
ESP10, 181, 223, 251, 300, 333, 601, , 605
ESP10, 180, 222, 248, 295, 332, 605, , 609
ESP10, 184, 218, 248, 292, 329, 609, , 613
ESP10, 180, 219, 246, 289, 325, 613, , 617
ESP10, 193, 231, 257, 297, 339, 618, , 622
ESP10, 200, 235, 261, 298, 340, 622, , 626
ESP10, 188, 228, 252, 290, 331, 626, , 630
ESP10, 194, 233, 254, 298, 332, 631, , 635
ESP10, 196, 236, 256, 302, 331, 635, , 639
ESP10, 191, 230, 249, 296, 324, 639, , 643
ESP10, 194, 238, 254, 300, 327, 644, , 648
ESP10, 193, 238, 257, 299, 327, 648, , 652
ESP10, 182, 225, 246, 290, 322, 652, , 656
ESP10, 182, 223, 245, 292, 320, 656, , 660
ESP10, 188, 229, 252, 299, 325, 661, , 665
ESP10, 179, 220, 244, 290, 316, 665, , 669
ESP10, 184, 227, 250, 299, 322, 669, , 673
ESP10, 176, 223, 241, 289, 313, 674, , 678
ESP10, 182, 228, 250, 296, 319, 678, , 682
ESP10, 180, 223, 246, 295, 314, 682, , 686
ESP10, 189, 229, 249, 298, 320, 686, , 690
ESP10, 185, 225, 248, 293, 315, 691, , 695
ESP10, 186, 226, 245, 289, 311, 695, , 699
ESP10, 190, 226, 245, 293, 312, 699, , 703
ESP10, 179, 218, 234, 283, 300, 704, , 708
ESP10, 173, 206, 224, 272, 289, 708, , 712
ESP10, 161, 191, 213, 258, 273, 712, , 716
ESP10, 155, 194, 206, 252, 265, 717, , 721
ESP10, 151, 189, 205, 246, 260, 721, , 725
ESP10, 141, 179, 202, 236, 250, 725, , 729
ESP10, 137, 174, 204, 234, 246, 729, , 733
Max Scale
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Scale To Last 45 Days
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ESP10
HEFS
ESP0
Data Files
/chpsesp/ensemble/natural/ARDQ2IN_SQIN.ESPF10.csv
ARDQ2IN_SQIN.ESPF0.csv|2026-03-04
ARDQ2IN_SQIN.ESPF10.csv|2026-03-04
ARDQ2IN_SQIN.ESPFM.csv|2026-03-04
APR-SEP
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ESP10,ESPM,ESP0
ESP10,ESPM,ESP0
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