Northwest River Forecast Center
Water Supply Seasonal Forecasts
Ensemble Date: 2025-02-17 Issued Date: 2025-02-17
Water Year 2025
---------------------Forecast --------------------- ----------Runoff-----------
River Basin Period Probable % Maximum % Minimum % Average PrevYR CurYR %
SILVIES - NEAR BURNS APR-AUG 140.4 198 214.7 304 85.8 121 71 75
APR-JUL 138.6 198 211.2 302 84.7 121 70 75
APR-SEP 142.7 200 218.5 306 87.4 122 71 76
JAN-JUL 238.2 220 340.6 314 198.6 183 108 125 15.34 140
JAN-SEP 241.9 220 347.2 316 201.5 183 110 126 15.34 140
OCT-SEP 249.9 216 355.1 307 209.5 181 116
DONNER UND BLITZEN - NR FRENCHGLEN APR-AUG 83.4 139 121.1 201 60.3 100 60 69
APR-JUL 79.8 139 116.7 203 57.3 100 57 67
APR-SEP 86.4 138 124.5 199 62.9 101 63 72
JAN-JUL 121.9 164 160.6 216 102.9 139 74 90 11.85 179
JAN-SEP 128.3 162 168.4 212 108.8 137 79 95 11.85 179
OCT-SEP 143.2 163 183.3 209 123.8 141 88
DUNGENESS - NEAR SEQUIM APR-AUG 123.5 91 155.6 115 103.4 76 136 79
APR-JUL 112.5 93 140.5 116 93.7 77 121 71
APR-SEP 132.8 92 168.0 116 110.6 76 145 84
JAN-JUL 161.8 83 196.3 101 142.7 73 195 135 20.09 45
JAN-SEP 183.8 84 222.6 102 160.6 73 219 148 20.09 45
OCT-SEP 240.8 84 279.6 97 217.6 76 287
SKAGIT - NEAR CONCRETE APR-AUG 4520.2 81 5446.6 98 3867.9 70 5549 3847
APR-JUL 4001.7 81 4869.6 98 3407.6 69 4959 3376
APR-SEP 4899.2 82 5834.2 98 4158.3 70 5955 4137
JAN-JUL 5716.1 78 7010.3 96 5126.2 70 7334 5683 678.24 49
JAN-SEP 6580.4 79 7880.3 95 5884.5 71 8330 6443 678.24 49
OCT-SEP 9057.0 83 10356.9 94 8361.1 76 10972
COLUMBIA - MICA DAM APR-AUG 9210.8 82 10359.6 93 7900.1 71 11166 8865
APR-JUL 7404.2 82 8733.5 96 6196.0 68 9064 6864
APR-SEP 10095.4 82 11523.4 94 8622.7 70 12296 10139
JAN-JUL 8129.7 83 9506.5 97 6896.0 70 9850 7469 384.60 90
JAN-SEP 10781.1 82 12301.3 94 9330.7 71 13082 10743 384.60 90
OCT-SEP 12623.3 87 14143.4 98 11172.8 77 14472
COLUMBIA - REVELSTOKE DAM APR-AUG 14239.2 90 15634.5 99 12293.7 78 15746 12525
APR-JUL 11534.4 88 13201.6 101 10028.1 77 13046 9980
APR-SEP 15534.6 90 17260.5 100 13393.4 78 17242 14161
JAN-JUL 12584.1 89 14274.7 101 11032.4 78 14115 10965 544.20 95
JAN-SEP 16528.6 90 18329.8 100 14440.7 79 18311 15147 544.20 95
OCT-SEP 19352.7 95 21153.9 104 17264.8 85 20340
---------------------Forecast --------------------- ----------Runoff-----------
River Basin Period Probable % Maximum % Minimum % Average PrevYR CurYR %
COLUMBIA - ARROW LAKES (HUGH KEENLEYSIDE DAM)APR-AUG 19559.6 88 21966.1 99 16990.7 77 22135 17325
APR-JUL 16429.7 87 18563.2 99 14133.8 75 18779 14200
APR-SEP 21476.8 89 23983.7 100 18341.2 76 24059 19383
JAN-JUL 18373.4 89 20597.6 100 16043.0 78 20698 16327 972.35 97
JAN-SEP 23443.0 90 26083.4 100 20338.6 78 25978 21509 972.35 97
OCT-SEP 27783.8 96 30424.2 105 24679.5 85 29084
KOOTENAI - LIBBY DAM APR-AUG 4437.1 73 5327.5 88 3688.6 61 6080 4789
APR-JUL 4061.1 73 4901.8 88 3301.4 59 5570 4352
APR-SEP 4671.2 73 5602.2 87 4052.4 63 6429 5091
JAN-JUL 4515.3 73 5379.7 86 3749.4 60 6227 4940 209.56 63
JAN-SEP 5144.9 73 6074.8 86 4517.6 64 7086 5679 209.56 63
OCT-SEP 5937.0 74 6866.9 86 5309.6 67 7981
KOOTENAI - AT LEONIA APR-AUG 5386.2 73 6397.8 86 4481.1 60 7409 5708
APR-JUL 4988.4 73 5940.3 87 4068.5 59 6858 5228
APR-SEP 5673.8 73 6715.7 86 4835.7 62 7803 6043
JAN-JUL 5688.8 72 6667.6 85 4749.9 60 7877 6189 281.09 59
JAN-SEP 6422.2 73 7418.8 84 5556.6 63 8822 7003 281.09 59
OCT-SEP 7331.1 74 8327.7 84 6465.5 65 9923
MOYIE - AT EASTPORT APR-AUG 285.9 73 369.8 95 197.1 51 390 271
APR-JUL 274.6 72 357.4 93 190.0 50 382 267
APR-SEP 292.3 74 377.5 96 202.7 51 395 274
JAN-JUL 302.2 70 387.6 90 220.1 51 431 322 7.37 42
JAN-SEP 321.1 72 407.6 92 232.5 52 443 330 7.37 42
OCT-SEP 333.0 69 419.6 88 244.5 51 479
KOOTENAI - AT BONNERS FERRY APR-AUG 5887.2 73 7035.2 87 4833.7 60 8061 6208
APR-JUL 5415.5 72 6521.8 87 4429.2 59 7495 5703
APR-SEP 6195.1 73 7362.0 87 5199.0 61 8463 6562
JAN-JUL 6177.2 72 7267.6 85 5153.1 60 8596 6723 296.32 58
JAN-SEP 6980.6 73 8095.7 85 5986.9 63 9565 7582 296.32 58
OCT-SEP 7918.6 74 9033.7 84 6924.9 65 10724
DUNCAN - DUNCAN DAM APR-AUG 1645.2 81 1896.8 93 1475.3 72 2040 1617
APR-JUL 1371.6 80 1610.4 94 1195.0 70 1713 1330
APR-SEP 1798.5 81 2032.5 91 1607.8 72 2224 1794
JAN-JUL 1492.7 81 1742.7 94 1311.9 71 1849 1474 69.41 90
JAN-SEP 1914.9 81 2178.6 92 1725.4 73 2361 1938 69.41 90
OCT-SEP 2253.1 86 2516.9 96 2063.7 79 2620
---------------------Forecast --------------------- ----------Runoff-----------
River Basin Period Probable % Maximum % Minimum % Average PrevYR CurYR %
KOOTENAI - KOOTENAY L AT QUEENS BAY APR-AUG 11808.1 78 13096.1 87 9701.7 64 15052 11303
APR-JUL 10653.1 77 12058.7 87 8706.7 63 13836 10270
APR-SEP 12390.6 78 13817.4 87 10288.8 65 15842 11963
JAN-JUL 12068.8 77 13475.1 86 10330.1 66 15754 12270 576.45 63
JAN-SEP 13768.1 78 15225.9 86 11965.6 67 17761 13963 576.45 63
OCT-SEP 15629.9 79 17087.6 86 13827.4 70 19885
SLOCAN - NEAR CRESCENT VALLEY APR-AUG 1604.8 87 1771.7 96 1244.6 67 1850 1293
APR-JUL 1454.2 85 1666.7 98 1130.4 66 1708 1195
APR-SEP 1691.3 88 1858.6 96 1309.7 68 1933 1352
JAN-JUL 1640.1 87 1842.5 97 1301.1 69 1892 1416 75.69 83
JAN-SEP 1854.5 88 2034.4 96 1483.3 70 2116 1573 75.69 83
OCT-SEP 2078.9 88 2258.8 96 1707.7 72 2364
COLUMBIA - AT BIRCHBANK APR-AUG 32774.2 82 36400.1 92 27949.9 70 39736 30510
APR-JUL 28331.5 81 31814.0 91 24288.6 69 34960 26164
APR-SEP 35305.5 83 39248.2 92 30009.0 70 42578 33308
JAN-JUL 31895.5 81 35428.6 90 27572.4 70 39168 30729 1646.06 79
JAN-SEP 38633.0 83 42928.4 92 33615.3 72 46786 37873 1646.06 79
OCT-SEP 45037.2 86 49332.6 94 40019.5 76 52397
BLACKFOOT - NEAR BONNER APR-AUG 452.4 53 560.9 66 305.6 36 855 373
APR-JUL 422.8 52 526.3 65 287.1 35 811 346
APR-SEP 478.4 54 591.2 66 329.4 37 891 396
JAN-JUL 486.4 52 608.5 65 348.8 37 937 441 35.21 63
JAN-SEP 540.5 53 673.7 66 391.1 38 1017 491 35.21 63
OCT-SEP 614.1 55 747.4 66 464.7 41 1126
CLARK FORK - ABOVE BLACKFOOT APR-AUG 395.0 62 625.7 98 242.9 38 637 390
APR-JUL 362.7 61 584.6 98 225.9 38 594 365
APR-SEP 423.6 62 669.8 99 263.6 39 680 415
JAN-JUL 470.0 62 692.9 92 339.4 45 756 529 56.35 72
JAN-SEP 532.1 63 778.1 92 377.1 45 842 579 56.35 72
OCT-SEP 644.4 65 890.3 89 489.4 49 996
CLARK FORK - ABOVE MISSOULA APR-AUG 855.5 57 1170.7 78 575.9 39 1492 763
APR-JUL 802.3 57 1097.1 78 535.9 38 1405 711
APR-SEP 910.6 58 1242.5 79 629.7 40 1571 812
JAN-JUL 972.2 57 1271.2 75 722.8 43 1693 970 91.56 68
JAN-SEP 1082.1 58 1416.6 76 805.2 43 1859 1070 91.56 68
OCT-SEP 1268.0 60 1602.5 76 991.1 47 2122
---------------------Forecast --------------------- ----------Runoff-----------
River Basin Period Probable % Maximum % Minimum % Average PrevYR CurYR %
BITTERROOT - NEAR DARBY APR-AUG 383.9 77 517.4 104 264.3 53 497 358
APR-JUL 359.4 77 481.8 104 244.0 52 465 335
APR-SEP 402.6 78 541.1 104 282.3 54 519 380
JAN-JUL 391.5 75 514.0 99 277.0 53 521 378 16.79 68
JAN-SEP 434.7 76 573.3 100 315.9 55 575 423 16.79 68
OCT-SEP 468.6 75 607.1 97 349.7 56 624
BITTERROOT - NEAR MISSOULA APR-AUG 1063.0 86 1284.1 103 811.1 65 1241 796
APR-JUL 1014.7 85 1230.6 103 770.6 65 1191 760
APR-SEP 1109.9 86 1333.2 103 850.8 66 1289 841
JAN-JUL 1159.8 84 1367.4 99 916.3 66 1385 922 61.56 68
JAN-SEP 1255.0 85 1470.3 99 996.5 67 1484 1003 61.56 68
OCT-SEP 1382.2 83 1597.5 96 1123.7 67 1669
CLARK FORK - BELOW MISSOULA APR-AUG 1927.5 70 2386.9 86 1395.1 50 2767 1546
APR-JUL 1818.2 69 2259.6 86 1317.3 50 2630 1457
APR-SEP 2028.0 70 2503.6 87 1475.1 51 2893 1640
JAN-JUL 2135.1 68 2588.2 83 1659.0 53 3121 1875 155.90 68
JAN-SEP 2341.0 69 2827.2 84 1818.1 54 3384 2057 155.90 68
OCT-SEP 2663.6 69 3149.8 82 2140.7 56 3838
CLARK FORK - AT ST REGIS APR-AUG 2552.0 71 3061.2 85 1899.0 53 3610 2061
APR-JUL 2403.1 70 2891.9 84 1788.1 52 3429 1942
APR-SEP 2672.1 71 3212.2 85 2005.7 53 3771 2186
JAN-JUL 2812.5 68 3339.9 81 2236.0 54 4109 2486 198.13 64
JAN-SEP 3087.5 69 3638.6 82 2453.6 55 4451 2730 198.13 64
OCT-SEP 3505.7 70 4056.8 80 2871.9 57 5042
NF FLATHEAD - NEAR COLUMBIA FALLS APR-AUG 1190.1 70 1434.7 85 909.3 54 1690 1303
APR-JUL 1112.5 70 1349.0 84 847.8 53 1600 1234
APR-SEP 1242.7 71 1492.4 85 954.7 55 1750 1348
JAN-JUL 1227.7 69 1451.2 82 959.9 54 1771 1431 52.19 67
JAN-SEP 1343.9 70 1594.6 83 1066.8 56 1921 1546 52.19 67
OCT-SEP 1459.0 68 1709.7 80 1181.9 55 2133
MF FLATHEAD - NEAR WEST GLACIER APR-AUG 1273.5 77 1662.0 101 985.9 60 1651 1227
APR-JUL 1206.9 77 1572.2 100 935.6 59 1576 1170
APR-SEP 1319.6 78 1713.0 101 1019.0 60 1697 1267
JAN-JUL 1287.5 74 1668.7 96 1014.7 58 1744 1356 42.28 58
JAN-SEP 1390.7 75 1800.9 97 1113.8 60 1865 1453 42.28 58
OCT-SEP 1483.3 72 1893.5 92 1206.3 58 2065
---------------------Forecast --------------------- ----------Runoff-----------
River Basin Period Probable % Maximum % Minimum % Average PrevYR CurYR %
SF FLATHEAD - HUNGRY HORSE DAM APR-AUG 1561.2 76 1876.2 92 1258.3 62 2043 1375
APR-JUL 1500.9 76 1809.4 91 1210.7 61 1981 1335
APR-SEP 1601.1 77 1920.9 92 1298.4 62 2088 1408
JAN-JUL 1688.2 75 1998.9 89 1380.5 62 2236 1577 62.94 57
JAN-SEP 1779.8 76 2103.4 90 1468.5 63 2343 1651 62.94 57
OCT-SEP 1914.2 75 2237.8 87 1602.9 62 2567
FLATHEAD - AT COLUMBIA FALLS APR-AUG 4205.9 77 5093.2 93 3105.1 57 5473 3922
APR-JUL 4002.1 76 4844.9 93 2943.7 56 5237 3756
APR-SEP 4352.6 77 5252.0 93 3232.1 57 5634 4035
JAN-JUL 4289.4 73 5321.0 91 3367.6 58 5847 4364 116.22 43
JAN-SEP 4662.5 75 5740.0 92 3642.3 58 6244 4643 116.22 43
OCT-SEP 4955.9 72 6033.4 87 3935.7 57 6906
FLATHEAD - SELI’Š KSANKA QLISPE’ DAMAPR-AUG 4668.2 73 5722.0 89 3441.3 54 6396 4499
APR-JUL 4438.3 72 5462.3 89 3267.2 53 6137 4298
APR-SEP 4826.2 73 5890.9 90 3572.9 54 6577 4637
JAN-JUL 4885.1 70 6134.4 88 3760.0 54 7010 5115 229.07 58
JAN-SEP 5279.3 71 6605.3 89 4026.0 54 7450 5454 229.07 58
OCT-SEP 5747.2 69 7073.2 85 4494.0 54 8277
CLARK FORK - NEAR PLAINS APR-AUG 7326.3 72 9126.5 89 5652.6 55 10215 6688
APR-JUL 6969.8 71 8665.8 89 5326.5 55 9749 6329
APR-SEP 7630.3 72 9482.7 90 5923.4 56 10574 6971
JAN-JUL 7888.9 70 9790.4 86 6272.5 55 11342 7732 429.12 59
JAN-SEP 8547.5 70 10565.7 87 6861.1 56 12168 8375 429.12 59
OCT-SEP 9460.6 69 11478.8 84 7774.1 57 13632
CLARK FORK - CABINET GORGE DAM APR-AUG 8372.2 74 10390.3 92 6478.3 57 11280 6875
APR-JUL 7931.2 74 9826.9 91 6075.9 56 10767 6552
APR-SEP 8724.8 75 10821.9 93 6803.4 58 11639 7126
JAN-JUL 8947.0 71 11074.3 88 7082.1 56 12591 7995 339.80 42
JAN-SEP 9751.9 72 12020.0 89 7797.9 58 13463 8568 339.80 42
OCT-SEP 10555.1 70 12823.2 86 8601.1 57 14991
PRIEST - NEAR PRIEST RIVER APR-AUG 668.1 81 807.8 98 512.8 62 823 591
APR-JUL 630.8 79 761.2 95 490.6 61 800 576
APR-SEP 700.1 83 851.0 101 536.5 64 843 602
JAN-JUL 884.3 86 1031.2 101 686.6 67 1026 891 45.05 49
JAN-SEP 950.3 89 1130.9 106 747.1 70 1069 917 45.05 49
OCT-SEP 1053.6 87 1234.2 101 850.4 70 1217
---------------------Forecast --------------------- ----------Runoff-----------
River Basin Period Probable % Maximum % Minimum % Average PrevYR CurYR %
PEND OREILLE - ALBENI FALLS DAM APR-AUG 9641.4 75 11800.8 91 7410.2 57 12919 8475
APR-JUL 9120.2 74 11189.0 90 6994.6 57 12369 8056
APR-SEP 10068.5 75 12257.6 92 7759.3 58 13347 8809
JAN-JUL 10911.7 73 13272.4 89 8665.2 58 14922 10517 620.74 54
JAN-SEP 11883.3 75 14298.0 90 9376.7 59 15900 11270 620.74 54
OCT-SEP 13237.1 74 15651.8 87 10730.5 60 17911
COLUMBIA - AT INTL BOUNDARY APR-AUG 42923.4 80 48343.8 90 37926.4 71 53664 39674
APR-JUL 37680.0 78 42528.5 88 33222.6 69 48307 34884
APR-SEP 45700.4 80 52026.6 91 40846.1 72 56951 42785
JAN-JUL 43854.8 79 47891.7 87 38573.4 70 55223 42323 2304.40 70
JAN-SEP 51025.4 80 57658.2 90 45901.2 72 63866 50224 2304.40 70
OCT-SEP 58860.7 82 65493.6 91 53736.5 75 71709
KETTLE - AT LAURIER APR-AUG 1781.1 92 2324.3 121 1238.5 64 1928 1413
APR-JUL 1737.2 92 2257.1 120 1207.7 64 1886 1388
APR-SEP 1813.6 93 2367.6 121 1254.5 64 1954 1430
JAN-JUL 1846.4 90 2376.3 115 1331.3 65 2058 1732 43.57 71
JAN-SEP 1939.2 91 2480.8 117 1380.5 65 2125 1775 43.57 71
OCT-SEP 2018.8 90 2560.3 114 1460.0 65 2247
NF COEUR D ALENE - AT ENAVILLE APR-AUG 608.6 84 795.0 109 420.5 58 727 378
APR-JUL 588.0 83 769.5 109 403.5 57 708 363
APR-SEP 625.6 84 812.9 109 435.2 59 743 392
JAN-JUL 869.5 77 1062.9 94 687.8 61 1129 788 59.14 33
JAN-SEP 907.5 78 1105.4 95 719.3 62 1164 817 59.14 33
OCT-SEP 1021.3 77 1219.2 92 833.1 63 1322
ST JOE - AT CALDER APR-AUG 894.8 80 1121.9 101 663.8 60 1112 692
APR-JUL 861.3 80 1075.8 100 637.4 59 1076 663
APR-SEP 919.9 81 1150.4 101 684.7 60 1138 715
JAN-JUL 1142.2 81 1358.5 96 965.9 68 1415 965 60.21 43
JAN-SEP 1201.5 81 1425.0 96 1011.9 68 1477 1017 60.21 43
OCT-SEP 1306.8 80 1530.3 94 1117.2 68 1636
COEUR D ALENE - COEUR D ALENE LAKE APR-AUG 2056.3 83 2565.2 104 1439.2 58 2470 1309
APR-JUL 2011.4 83 2506.7 103 1401.3 58 2428 1287
APR-SEP 2093.3 84 2609.3 104 1471.8 59 2504 1336
JAN-JUL 3037.5 79 3673.6 95 2591.0 67 3868 2557 244.89 39
JAN-SEP 3123.2 79 3767.4 96 2664.4 68 3945 2606 244.89 39
OCT-SEP 3532.0 79 4176.2 94 3073.2 69 4461
---------------------Forecast --------------------- ----------Runoff-----------
River Basin Period Probable % Maximum % Minimum % Average PrevYR CurYR %
SPOKANE - AT SPOKANE APR-AUG 2116.6 83 2664.3 105 1487.3 59 2540 1374
APR-JUL 2052.4 83 2577.0 104 1432.5 58 2475 1338
APR-SEP 2160.1 84 2716.8 105 1526.2 59 2587 1402
JAN-JUL 3132.5 80 3774.0 96 2671.9 68 3926 2601 288.70 45
JAN-SEP 3246.9 80 3899.4 97 2763.7 68 4038 2665 288.70 45
OCT-SEP 3686.9 80 4339.4 95 3203.7 70 4584
SPOKANE - AT LONGLAKE APR-AUG 2414.8 86 2955.8 105 1740.9 62 2817 1538
APR-JUL 2310.2 85 2826.3 104 1648.1 61 2714 1470
APR-SEP 2501.1 86 3049.3 105 1818.0 63 2901 1595
JAN-JUL 3643.8 82 4349.9 98 3115.5 70 4433 2912 372.90 48
JAN-SEP 3837.3 83 4560.4 99 3304.0 72 4619 3038 372.90 48
OCT-SEP 4378.3 83 5101.4 96 3845.0 73 5295
COLUMBIA - GRAND COULEE DAM APR-AUG 47002.8 81 53989.8 93 41495.4 71 58186 42426
APR-JUL 42066.2 80 47982.8 91 36791.8 70 52774 37633
APR-SEP 50252.4 82 57799.3 94 44833.8 73 61483 45518
JAN-JUL 49167.3 80 54753.4 89 43525.8 70 61749 47073 2631.70 64
JAN-SEP 57441.8 82 64971.3 92 51219.7 73 70457 54958 2631.70 64
OCT-SEP 65739.9 83 73269.4 93 59517.8 75 78842
SIMILKAMEEN - NEAR HEDLEY APR-AUG 591.5 60 800.5 81 422.5 43 984 576
APR-JUL 581.1 61 783.0 82 417.9 44 956 557
APR-SEP 600.8 60 814.0 81 435.3 43 1004 588
JAN-JUL 686.3 64 894.5 83 540.3 50 1078 668 32.80 57
JAN-SEP 706.5 63 925.5 82 557.7 50 1126 699 32.80 57
OCT-SEP 781.6 62 1000.6 80 632.8 50 1257
SIMILKAMEEN - NEAR NIGHTHAWK APR-AUG 671.1 50 932.4 70 448.2 34 1335 784
APR-JUL 670.4 52 909.6 71 448.0 35 1286 754
APR-SEP 679.9 50 956.0 70 459.3 34 1366 804
JAN-JUL 783.4 54 1035.2 72 557.0 39 1443 896 40.29 52
JAN-SEP 798.2 52 1071.2 70 570.8 37 1522 946 40.29 52
OCT-SEP 896.7 53 1169.7 69 669.3 40 1692
OKANOGAN - NEAR TONASKET APR-AUG 921.0 56 1327.9 80 670.5 40 1656 905
APR-JUL 877.1 56 1254.4 80 629.9 40 1566 856
APR-SEP 966.1 56 1389.6 81 712.0 41 1720 950
JAN-JUL 1081.7 59 1456.5 80 825.5 45 1832 1068 75.52 58
JAN-SEP 1177.5 59 1591.2 80 907.3 46 1986 1162 75.52 58
OCT-SEP 1348.3 60 1762.0 79 1078.1 48 2238
---------------------Forecast --------------------- ----------Runoff-----------
River Basin Period Probable % Maximum % Minimum % Average PrevYR CurYR %
METHOW - NEAR PATEROS APR-AUG 483.3 51 604.0 64 348.7 37 942 665
APR-JUL 461.2 51 581.1 64 328.2 36 904 641
APR-SEP 501.7 52 623.0 65 365.9 38 965 683
JAN-JUL 535.2 53 654.8 65 393.3 39 1001 793 30.96 70
JAN-SEP 578.4 54 696.7 66 431.0 41 1063 836 30.96 70
OCT-SEP 639.9 55 758.3 65 492.6 42 1162
STEHEKIN - AT STEHEKIN APR-AUG 559.4 72 665.0 86 456.9 59 778 531
APR-JUL 522.7 74 618.6 87 424.6 60 710 491
APR-SEP 579.5 71 694.0 85 472.1 58 814 554
JAN-JUL 600.5 74 710.4 88 520.3 64 809 616 23.90 50
JAN-SEP 661.9 72 788.3 86 567.8 62 913 679 23.90 50
OCT-SEP 741.0 71 867.4 83 646.9 62 1046
CHELAN - LAKE CHELAN DAM APR-AUG 747.6 68 941.0 85 581.9 53 1102 724
APR-JUL 710.2 69 903.9 88 557.7 54 1029 676
APR-SEP 770.2 68 962.3 84 596.3 52 1139 743
JAN-JUL 852.2 70 1072.1 88 719.4 59 1217 901 38.29 42
JAN-SEP 912.1 69 1130.9 85 770.4 58 1326 968 38.29 42
OCT-SEP 1029.9 68 1248.7 82 888.2 59 1518
WENATCHEE - AT PESHASTIN APR-AUG 1165.0 80 1402.8 97 948.7 65 1454 955
APR-JUL 1102.3 80 1341.8 97 902.9 65 1379 914
APR-SEP 1198.6 80 1441.9 96 979.7 65 1496 981
JAN-JUL 1326.1 77 1606.7 93 1140.6 66 1726 1239 76.00 44
JAN-SEP 1416.1 77 1706.5 93 1233.0 67 1842 1307 76.00 44
OCT-SEP 1575.8 72 1866.2 86 1392.7 64 2175
COLUMBIA - BLO ROCK ISLAND DAM APR-AUG 50668.2 79 58453.7 91 44498.4 69 64028 45464
APR-JUL 45048.6 77 52405.8 90 39541.1 68 58256 40631
APR-SEP 54045.8 80 62447.2 92 48024.2 71 67524 48596
JAN-JUL 53451.7 78 60137.6 88 46988.1 69 68440 51145 3000.82 64
JAN-SEP 61973.8 80 70931.0 91 55164.8 71 77708 59110 3000.82 64
OCT-SEP 70721.5 81 79678.7 91 63912.5 73 87167
COLUMBIA - BLO PRIEST RAPIDS DAM APR-AUG 50669.7 78 58452.8 90 44502.3 69 64656 45355
APR-JUL 45047.1 76 52398.6 89 39540.8 67 58905 40429
APR-SEP 54052.1 79 62457.0 92 48030.0 70 68162 48518
JAN-JUL 53535.9 77 60213.0 87 47073.8 68 69359 51017 3052.15 63
JAN-SEP 62063.2 79 71015.5 90 55256.4 70 78616 59106 3052.15 63
OCT-SEP 71149.8 81 80102.1 91 64343.0 73 88197
---------------------Forecast --------------------- ----------Runoff-----------
River Basin Period Probable % Maximum % Minimum % Average PrevYR CurYR %
YAKIMA - NEAR MARTIN APR-AUG 93.4 75 114.2 92 74.1 60 124 101
APR-JUL 90.5 77 109.3 93 71.8 61 118 96
APR-SEP 96.0 74 118.3 92 76.4 59 129 104
JAN-JUL 133.5 76 164.1 93 110.6 63 176 145 13.85 42
JAN-SEP 140.9 75 173.1 92 116.0 62 188 152 13.85 42
OCT-SEP 182.7 73 214.8 86 157.7 63 249
KACHESS - NEAR EASTON APR-AUG 83.2 77 104.2 97 66.8 62 108 78
APR-JUL 81.8 79 101.5 98 65.5 63 104 74
APR-SEP 84.7 74 105.9 93 68.5 60 114 85
JAN-JUL 121.0 77 147.7 94 100.8 64 158 118 11.35 38
JAN-SEP 125.0 74 155.9 93 104.2 62 168 129 11.35 38
OCT-SEP 154.8 71 185.7 85 134.0 61 218
CLE ELUM - NEAR ROSLYN APR-AUG 332.1 82 412.3 101 285.4 70 407 285
APR-JUL 325.3 84 397.9 103 279.8 73 386 267
APR-SEP 338.9 81 418.1 100 290.9 69 419 290
JAN-JUL 420.9 82 516.9 101 369.1 72 512 391 27.86 41
JAN-SEP 435.6 80 545.7 100 380.4 70 545 413 27.86 41
OCT-SEP 508.9 76 619.0 92 453.7 67 672
YAKIMA - NEAR HORLICK APR-AUG 804.3 88 966.0 105 705.9 77 916 628
APR-JUL 755.8 86 917.0 105 642.3 73 876 599
APR-SEP 884.5 92 1047.0 109 785.1 82 962 651
JAN-JUL 1059.0 81 1276.6 97 917.5 70 1311 989 91.57 40
JAN-SEP 1194.7 85 1398.5 100 1073.2 77 1398 1041 91.57 40
OCT-SEP 1399.3 80 1603.0 92 1277.8 73 1746
BUMPING - BELOW BUMPING DAM APR-AUG 112.7 94 135.9 113 91.0 76 120 85
APR-JUL 108.2 94 130.3 113 87.9 76 115 82
APR-SEP 115.7 93 139.3 112 94.1 76 125 88
JAN-JUL 144.9 92 185.7 117 131.0 83 158 123 9.62 40
JAN-SEP 152.3 91 194.2 116 139.5 83 168 129 9.62 40
OCT-SEP 171.2 83 213.1 103 158.3 77 207
TIETON - AT TIETON DAM APR-AUG 204.2 98 234.0 112 177.4 85 209 155
APR-JUL 183.1 96 210.3 110 157.8 83 191 141
APR-SEP 218.9 97 251.0 112 192.3 85 225 171
JAN-JUL 247.7 92 279.6 103 222.5 82 271 211 25.65 59
JAN-SEP 285.2 94 318.6 105 257.5 84 305 241 25.65 59
OCT-SEP 319.0 86 352.4 95 291.3 78 372
---------------------Forecast --------------------- ----------Runoff-----------
River Basin Period Probable % Maximum % Minimum % Average PrevYR CurYR %
NACHES - NEAR NACHES APR-AUG 636.3 82 810.1 105 542.7 70 773 510
APR-JUL 599.9 81 774.8 105 510.9 69 737 487
APR-SEP 675.1 84 837.4 104 572.7 71 807 547
JAN-JUL 803.0 78 1035.6 101 718.6 70 1030 742 51.47 34
JAN-SEP 859.4 78 1104.4 100 789.4 72 1100 802 51.47 34
OCT-SEP 945.8 73 1190.8 92 875.8 68 1297
YAKIMA - NEAR PARKER APR-AUG 1778.8 99 2023.4 112 1602.5 89 1804 1200
APR-JUL 1551.5 90 1876.0 109 1308.6 76 1721 1136
APR-SEP 1997.9 105 2243.3 118 1855.1 98 1899 1256
JAN-JUL 2122.1 82 2613.8 101 1950.0 75 2596 1906 190.53 43
JAN-SEP 2619.8 94 2954.6 107 2486.7 90 2774 2027 190.53 43
OCT-SEP 2982.0 88 3316.8 97 2848.9 84 3404
YAKIMA - AT KIONA APR-AUG 628.5 60 862.8 83 482.4 46 1043 567
APR-JUL 552.2 58 784.7 82 409.4 43 952 479
APR-SEP 695.9 61 934.6 81 539.2 47 1149 664
JAN-JUL 1048.2 59 1353.7 76 924.2 52 1785 1225 193.54 46
JAN-SEP 1189.0 60 1516.9 77 1046.8 53 1982 1410 193.54 46
OCT-SEP 1500.9 60 1828.8 73 1358.7 54 2516
SNAKE - JACKSON LAKE AT DAM APR-AUG 609.5 75 731.2 90 490.4 60 816 645
APR-JUL 566.9 74 687.1 89 457.8 59 771 622
APR-SEP 639.8 75 764.0 90 519.8 61 849 667
JAN-JUL 651.3 75 771.0 89 543.8 63 869 711 50.49 94
JAN-SEP 724.3 76 847.8 90 605.7 64 947 755 50.49 94
OCT-SEP 778.3 75 901.8 87 659.7 63 1039
GREYS - AB RES NR ALPINE APR-AUG 318.7 91 390.1 112 268.0 77 350 302
APR-JUL 286.2 89 349.7 109 244.6 76 321 278
APR-SEP 343.8 93 416.4 112 286.2 77 371 320
JAN-JUL 319.0 88 379.0 105 272.8 76 361 320 15.85 80
JAN-SEP 374.2 91 445.1 108 315.1 76 412 362 15.85 80
OCT-SEP 416.9 90 487.8 106 357.8 78 461
SALT - ABV PALISADES RES NR ETNA APR-AUG 335.4 100 423.7 127 262.1 78 335 361
APR-JUL 299.7 100 379.7 126 234.4 78 301 328
APR-SEP 371.5 101 466.3 127 292.6 80 368 393
JAN-JUL 380.1 99 460.3 120 317.5 83 383 414 41.08 99
JAN-SEP 450.6 100 543.9 121 376.5 84 450 479 41.08 99
OCT-SEP 544.6 100 637.9 117 470.5 86 545
---------------------Forecast --------------------- ----------Runoff-----------
River Basin Period Probable % Maximum % Minimum % Average PrevYR CurYR %
SNAKE - NEAR IRWIN APR-AUG 2862.5 85 3629.7 108 2300.9 68 3362 3117
APR-JUL 2602.1 84 3287.8 106 2111.1 68 3097 2889
APR-SEP 3075.2 86 3860.5 108 2470.9 69 3577 3311
JAN-JUL 3011.5 84 3707.8 103 2547.3 71 3584 3351 217.04 86
JAN-SEP 3520.7 87 4278.8 105 2907.1 72 4064 3773 217.04 86
OCT-SEP 3977.9 86 4736.1 103 3364.4 73 4612
SNAKE - NEAR HEISE APR-AUG 3165.9 88 3999.8 111 2547.2 71 3605 3357
APR-JUL 2852.6 86 3618.5 109 2327.8 70 3308 3127
APR-SEP 3407.8 89 4260.5 111 2741.2 71 3849 3549
JAN-JUL 3364.2 87 4135.0 107 2859.5 74 3871 3651 263.21 91
JAN-SEP 3924.9 89 4772.1 108 3272.9 74 4413 4074 263.21 91
OCT-SEP 4488.5 89 5335.7 106 3836.5 76 5050
FALL RIVER - NEAR CHESTER APR-AUG 300.7 85 376.9 107 218.0 62 352 280
APR-JUL 291.4 89 362.9 110 214.3 65 329 258
APR-SEP 320.3 85 397.5 105 232.9 62 377 306
JAN-JUL 368.9 89 436.8 105 289.7 70 416 346 41.66 91
JAN-SEP 396.7 86 472.1 102 308.7 67 464 394 41.66 91
OCT-SEP 480.7 86 556.1 99 392.7 70 559
HENRYS FORK - AT ST. ANTHONY APR-AUG 690.8 96 825.4 115 493.5 69 720 565
APR-JUL 607.7 95 736.0 115 445.3 70 639 506
APR-SEP 763.4 96 900.9 113 545.1 69 794 618
JAN-JUL 880.6 95 1013.8 109 727.5 78 931 788 143.06 90
JAN-SEP 1039.2 96 1177.6 108 821.4 76 1086 901 143.06 90
OCT-SEP 1259.1 93 1397.5 103 1041.3 77 1358
TETON - NEAR ST. ANTHONY APR-AUG 363.2 88 480.4 117 277.3 67 412 419
APR-JUL 319.0 87 424.0 115 237.0 64 368 381
APR-SEP 404.0 90 522.9 117 310.0 69 447 450
JAN-JUL 383.6 86 491.1 110 305.6 68 448 453 32.38 84
JAN-SEP 466.9 89 590.0 112 381.1 72 526 523 32.38 84
OCT-SEP 545.0 89 668.0 109 459.2 75 614
HENRYS FORK - AT REXBURG APR-AUG 1175.5 77 1455.8 95 864.9 56 1536 1221
APR-JUL 1051.8 79 1331.4 100 777.4 58 1335 1080
APR-SEP 1294.5 76 1577.3 92 959.1 56 1710 1340
JAN-JUL 1399.8 81 1648.0 96 1124.9 65 1721 1403 164.96 81
JAN-SEP 1653.0 79 1892.6 90 1306.2 62 2096 1664 164.96 81
OCT-SEP 2054.7 81 2294.3 91 1707.9 68 2527
---------------------Forecast --------------------- ----------Runoff-----------
River Basin Period Probable % Maximum % Minimum % Average PrevYR CurYR %
WILLOW CREEK - NEAR RIRIE APR-AUG 59.1 100 115.5 195 30.4 51 59 106
APR-JUL 58.1 100 112.2 192 30.0 51 58 103
APR-SEP 60.5 100 118.1 196 31.3 52 60 108
JAN-JUL 69.0 100 122.3 177 42.6 62 69 116 4.60 108
JAN-SEP 71.4 100 128.1 180 43.8 62 71 121 4.60 108
OCT-SEP 80.5 102 137.2 174 52.9 67 79
SNAKE - NEAR SHELLEY APR-AUG 3932.3 87 5019.0 111 3051.6 68 4520 4113
APR-JUL 3550.4 87 4549.6 111 2774.3 68 4090 3824
APR-SEP 4281.3 87 5380.2 110 3306.5 67 4905 4378
JAN-JUL 4385.5 91 5376.9 111 3631.0 75 4841 4707 429.56 108
JAN-SEP 5124.2 91 6197.1 110 4163.3 74 5656 5261 429.56 108
OCT-SEP 5944.5 90 7017.5 106 4983.6 75 6605
PORTNEUF - AT TOPAZ APR-AUG 66.9 101 85.5 129 54.6 83 66 91
APR-JUL 58.2 101 74.5 129 47.4 82 58 80
APR-SEP 74.6 103 95.7 133 61.1 85 72 99
JAN-JUL 83.6 100 96.9 116 73.5 88 83 114 11.29 92
JAN-SEP 99.8 102 117.5 120 87.2 89 98 133 11.29 92
OCT-SEP 124.3 105 142.1 120 111.7 95 118
SNAKE - AT AMERICAN FALLS DAM APR-AUG 2176.1 86 3289.5 130 1217.4 48 2531 2058
APR-JUL 2141.2 85 3174.4 126 1277.1 50 2529 2142
APR-SEP 2284.7 87 3440.0 131 1278.7 49 2624 2097
JAN-JUL 3216.2 88 4286.0 117 2405.6 66 3651 3221 522.79 87
JAN-SEP 3378.9 90 4535.4 121 2407.2 64 3745 3175 522.79 87
OCT-SEP 4315.1 88 5471.6 112 3343.4 68 4883
SALMON FALLS CREEK - NR SAN JACINTO APR-AUG 80.1 121 120.3 182 55.5 84 66 75
APR-JUL 78.3 121 117.8 182 54.2 84 65 74
APR-SEP 82.2 121 123.1 181 57.8 85 68 77
JAN-JUL 95.1 110 130.5 151 77.3 89 87 95 5.43 65
JAN-SEP 99.7 111 135.8 151 80.5 90 90 97 5.43 65
OCT-SEP 109.1 109 145.2 146 89.9 90 100
BIG LOST - AT HOWELL RANCH NEAR CHILLY APR-AUG 143.5 87 217.1 132 81.8 50 165 130
APR-JUL 133.2 86 202.1 131 75.6 49 154 123
APR-SEP 150.4 88 226.0 132 86.5 50 172 136
JAN-JUL 146.8 87 215.6 128 89.2 53 168 141 7.49 102
JAN-SEP 164.0 88 239.5 129 100.6 54 186 153 7.49 102
OCT-SEP 178.7 87 254.2 124 115.4 56 204
---------------------Forecast --------------------- ----------Runoff-----------
River Basin Period Probable % Maximum % Minimum % Average PrevYR CurYR %
BIG LOST - MACKAY RESERVOIR NEAR MACKAY APR-AUG 128.2 102 203.4 161 74.2 59 126 111
APR-JUL 116.7 103 180.6 159 66.0 58 113 98
APR-SEP 138.3 101 217.8 160 81.1 59 136 122
JAN-JUL 141.3 100 205.2 145 90.8 64 141 129 13.88 91
JAN-SEP 163.0 99 242.4 148 105.8 64 164 153 13.88 91
OCT-SEP 193.3 98 272.8 139 136.2 69 197
BIG WOOD - AT HAILEY APR-AUG 192.0 78 274.5 111 122.8 50 246 186
APR-JUL 178.5 77 255.9 110 113.6 49 232 177
APR-SEP 202.7 79 289.1 112 131.4 51 257 195
JAN-JUL 202.5 77 279.2 106 138.8 53 263 212 13.27 88
JAN-SEP 226.7 78 312.4 108 156.6 54 289 230 13.27 88
OCT-SEP 253.3 79 339.1 106 183.2 57 321
BIG WOOD - MAGIC DAM APR-AUG 160.1 68 294.9 126 81.1 35 235 152
APR-JUL 156.0 69 280.6 124 79.0 35 227 146
APR-SEP 164.9 69 303.3 126 83.7 35 240 154
JAN-JUL 194.1 71 319.1 117 110.7 41 273 188 17.94 164
JAN-SEP 202.2 71 341.8 119 115.7 40 286 196 17.94 164
OCT-SEP 198.9 65 338.5 110 112.5 37 307
LITTLE WOOD - NEAR CAREY APR-AUG 53.8 72 107.5 145 28.9 39 74 57
APR-JUL 51.9 73 102.2 143 28.1 39 71 54
APR-SEP 56.0 73 111.6 146 29.8 39 77 59
JAN-JUL 66.1 75 113.8 128 41.4 47 89 71 4.17 70
JAN-SEP 70.0 75 123.4 132 43.0 46 94 76 4.17 70
OCT-SEP 77.3 74 130.7 126 50.3 48 104
SNAKE - AT KING HILL APR-AUG 2160.7 74 3099.6 106 1881.5 64 2925 2822
APR-JUL 1733.3 71 2626.9 107 1474.3 60 2450 2374
APR-SEP 2619.0 77 3641.2 107 2297.0 67 3412 3271
JAN-JUL 2881.7 70 4095.4 99 2575.7 62 4129 3517 593.06 68
JAN-SEP 3775.2 74 5104.2 100 3399.8 67 5090 4413 593.06 68
OCT-SEP 4999.5 75 6328.6 96 4624.2 70 6626
BRUNEAU - NEAR HOT SPRINGS APR-AUG 151.8 84 211.9 118 110.6 62 180 216
APR-JUL 148.3 85 204.9 117 109.1 62 176 212
APR-SEP 154.6 84 217.2 119 112.0 61 183 218
JAN-JUL 190.7 88 247.0 114 147.3 68 217 257 10.01 66
JAN-SEP 197.4 88 259.3 115 150.2 67 225 263 10.01 66
OCT-SEP 210.9 87 272.9 113 163.8 68 242
---------------------Forecast --------------------- ----------Runoff-----------
River Basin Period Probable % Maximum % Minimum % Average PrevYR CurYR %
SNAKE - BELOW SWAN FALLS APR-AUG 2395.5 85 3391.9 121 2132.1 76 2812 2793
APR-JUL 1967.4 82 2916.4 121 1721.8 72 2405 2440
APR-SEP 2895.6 89 3978.5 122 2568.8 79 3258 3193
JAN-JUL 3260.8 78 4488.6 108 2957.4 71 4166 3685 638.02 70
JAN-SEP 4191.3 83 5572.1 111 3802.3 76 5020 4438 638.02 70
OCT-SEP 5462.7 83 6843.5 104 5073.7 77 6584
OWYHEE - OWYHEE DAM APR-AUG 355.4 111 709.6 221 233.2 73 321 595
APR-JUL 339.5 110 685.3 223 219.2 71 307 577
APR-SEP 370.7 110 731.6 218 245.8 73 336 611
JAN-JUL 786.4 144 1202.5 220 600.4 110 547 860 94.04 117
JAN-SEP 814.3 142 1255.5 218 626.9 109 575 894 94.04 117
OCT-SEP 873.7 136 1314.9 205 686.3 107 641
SF BOISE - ANDERSON RANCH DAM APR-AUG 481.1 100 614.8 128 344.7 72 480 375
APR-JUL 463.0 100 590.3 128 331.1 72 462 356
APR-SEP 497.6 101 634.0 128 359.6 73 495 389
JAN-JUL 541.9 98 673.1 122 408.9 74 550 434 27.57 81
JAN-SEP 576.0 99 716.8 123 436.2 75 583 468 27.57 81
OCT-SEP 619.7 97 760.6 119 479.9 75 637
BOISE - LUCKY PEAK DAM APR-AUG 1421.2 111 1778.0 138 1044.9 81 1284 1037
APR-JUL 1364.2 111 1680.7 136 1000.2 81 1232 1002
APR-SEP 1468.0 110 1839.4 138 1085.0 82 1329 1076
JAN-JUL 1628.7 104 2000.4 128 1258.6 80 1566 1280 91.54 73
JAN-SEP 1753.1 105 2157.6 130 1339.0 81 1663 1354 91.54 73
OCT-SEP 1875.3 103 2279.8 125 1461.2 80 1829
BOISE - NEAR PARMA APR-AUG 495.7 93 792.2 149 405.3 76 531 492
APR-JUL 446.8 92 736.9 152 355.8 73 486 455
APR-SEP 554.6 95 853.2 146 442.8 76 584 546
JAN-JUL 690.3 91 989.6 130 590.7 78 761 632 91.69 76
JAN-SEP 799.1 93 1105.9 129 678.1 79 859 723 91.69 76
OCT-SEP 956.3 93 1263.1 123 835.3 82 1023
MALHEUR - NEAR DREWSEY APR-AUG 108.7 170 169.0 264 70.9 111 64 74
APR-JUL 107.1 169 165.2 260 70.0 110 64 74
APR-SEP 111.0 171 173.0 267 72.2 111 65 75
JAN-JUL 210.8 182 287.3 248 182.3 157 116 154 21.16 134
JAN-SEP 214.1 183 293.7 251 185.6 158 117 155 21.16 134
OCT-SEP 234.3 180 313.9 241 205.8 158 130
---------------------Forecast --------------------- ----------Runoff-----------
River Basin Period Probable % Maximum % Minimum % Average PrevYR CurYR %
NF MALHEUR - AT BEULAH APR-AUG 132.4 234 175.1 309 98.8 175 57 52
APR-JUL 125.4 234 165.0 307 94.4 176 54 50
APR-SEP 137.6 232 182.3 308 102.6 173 59 54
JAN-JUL 162.9 195 205.1 245 135.1 162 84 80 9.92 102
JAN-SEP 173.6 195 221.3 248 144.6 162 89 85 9.92 102
OCT-SEP 186.5 185 234.2 233 157.6 157 101
DEADWOOD - BELOW DEADWOOD RES APR-AUG 144.1 110 171.8 131 113.7 87 131 104
APR-JUL 138.6 111 166.8 133 110.6 88 125 103
APR-SEP 147.2 109 175.2 130 116.2 86 135 108
JAN-JUL 151.7 106 184.7 129 124.2 87 143 119 7.11 86
JAN-SEP 160.8 105 193.1 127 131.1 86 153 124 7.11 86
OCT-SEP 174.6 104 206.9 123 144.9 86 168
NF PAYETTE - CASCADE DAM APR-AUG 524.7 112 665.7 141 398.5 85 470 368
APR-JUL 510.9 110 643.5 139 387.6 84 463 362
APR-SEP 538.6 111 686.5 141 411.1 84 487 389
JAN-JUL 610.1 106 747.4 130 492.9 86 576 465 42.29 87
JAN-SEP 648.5 108 782.8 130 519.8 87 600 492 42.29 87
OCT-SEP 725.1 106 859.5 125 596.4 87 685
PAYETTE - NEAR HORSESHOE BEND APR-AUG 1729.5 112 2075.4 135 1304.6 85 1540 1274
APR-JUL 1652.2 111 1989.2 134 1254.4 85 1484 1233
APR-SEP 1791.9 112 2139.8 134 1352.5 85 1597 1329
JAN-JUL 1989.9 107 2403.2 130 1578.1 85 1854 1548 123.64 82
JAN-SEP 2117.0 108 2545.5 129 1698.2 86 1968 1644 123.64 82
OCT-SEP 2328.2 105 2756.7 125 1909.4 86 2208
PAYETTE - NEAR EMMETT APR-AUG 1439.8 113 1813.8 142 1006.8 79 1277 1122
APR-JUL 1321.8 112 1686.9 143 907.1 77 1179 1025
APR-SEP 1526.8 115 1903.7 144 1085.0 82 1325 1159
JAN-JUL 1722.5 108 2164.1 136 1289.4 81 1589 1310 130.86 78
JAN-SEP 1926.4 111 2389.5 138 1467.3 85 1736 1444 130.86 78
OCT-SEP 2096.3 108 2559.5 131 1637.3 84 1947
WEISER - NEAR WEISER APR-AUG 464.4 122 607.2 160 360.1 95 380 294
APR-JUL 447.5 123 589.1 162 343.9 94 365 281
APR-SEP 479.6 123 621.6 160 372.4 96 389 302
JAN-JUL 963.1 149 1147.7 178 767.5 119 645 477 112.70 117
JAN-SEP 993.2 148 1177.9 176 794.9 119 669 498 112.70 117
OCT-SEP 1081.4 149 1266.2 174 883.1 122 726
---------------------Forecast --------------------- ----------Runoff-----------
River Basin Period Probable % Maximum % Minimum % Average PrevYR CurYR %
SNAKE - AT WEISER APR-AUG 5670.4 107 7826.4 147 4441.9 84 5311 5263
APR-JUL 4955.2 105 7049.1 149 3852.0 82 4718 4713
APR-SEP 6358.6 107 8657.0 145 5098.1 86 5956 5850
JAN-JUL 8034.2 104 10597.8 137 6725.9 87 7719 6876 1159.50 81
JAN-SEP 9426.5 105 12205.7 136 8012.6 89 8957 8013 1159.50 81
OCT-SEP 11331.1 101 14110.3 126 9917.2 89 11199
BURNT - NR HEREFORD APR-AUG 41.1 136 63.4 209 24.1 80 30 33
APR-JUL 40.2 135 62.3 210 23.9 80 30 31
APR-SEP 42.5 137 64.5 208 25.1 81 31 34
JAN-JUL 55.9 111 77.1 154 42.8 85 50 56 4.78 78
JAN-SEP 57.9 113 80.0 155 44.5 86 51 58 4.78 78
OCT-SEP 64.3 111 86.4 149 50.9 88 58
EAGLE CREEK - ABOVE SKULL CK APR-AUG 181.2 107 218.4 129 145.2 86 169 129
APR-JUL 171.5 107 205.2 128 136.2 85 161 124
APR-SEP 187.4 108 225.5 130 150.9 87 174 133
JAN-JUL 219.0 117 254.5 136 183.9 98 188 149 11.07 95
JAN-SEP 235.5 117 272.3 136 198.6 99 201 159 11.07 95
OCT-SEP 249.2 113 285.9 130 212.2 96 221
SNAKE - BROWNLEE DAM APR-AUG 6393.4 111 8699.6 152 5010.7 87 5736 5610
APR-JUL 5670.9 111 7869.3 154 4382.6 86 5125 5054
APR-SEP 7120.0 111 9572.4 150 5704.7 89 6398 6226
JAN-JUL 9102.4 109 11829.4 142 7629.0 92 8326 7488 1306.13 86
JAN-SEP 10543.0 110 13532.5 141 8993.9 94 9600 8660 1306.13 86
OCT-SEP 12557.3 105 15546.9 131 11008.2 92 11906
SNAKE - AT HELLS CANYON DAM APR-AUG 6393.4 106 8699.6 144 5010.7 83 6046 5743
APR-JUL 5670.9 104 7869.3 145 4382.6 81 5429 5183
APR-SEP 7120.0 106 9572.4 142 5704.7 85 6725 6355
JAN-JUL 9126.8 103 11853.9 134 7653.4 87 8834 7695 1328.77 83
JAN-SEP 10567.4 104 13557.0 134 9018.3 89 10130 8867 1328.77 83
OCT-SEP 12621.9 101 15611.5 125 11072.8 89 12500
IMNAHA - AT IMNAHA APR-AUG 317.1 118 400.4 149 239.2 89 269 195
APR-JUL 304.7 118 384.9 149 227.9 88 258 188
APR-SEP 326.1 118 411.6 149 247.8 89 277 201
JAN-JUL 363.6 115 440.2 140 276.7 88 315 247 20.32 96
JAN-SEP 387.6 116 466.5 140 296.4 89 334 260 20.32 96
OCT-SEP 417.3 114 496.1 135 326.1 89 366
---------------------Forecast --------------------- ----------Runoff-----------
River Basin Period Probable % Maximum % Minimum % Average PrevYR CurYR %
SALMON - AT SALMON APR-AUG 736.9 84 1092.6 125 539.3 62 873 632
APR-JUL 676.5 83 992.5 122 500.0 62 810 590
APR-SEP 789.4 85 1165.5 126 579.2 62 929 672
JAN-JUL 867.2 86 1182.0 117 693.6 69 1008 795 96.70 94
JAN-SEP 984.4 87 1354.9 120 773.6 69 1126 877 96.70 94
OCT-SEP 1169.0 87 1539.6 114 958.2 71 1346
SALMON - AT WHITEBIRD APR-AUG 6092.9 103 7496.9 127 4661.3 79 5917 4796
APR-JUL 5783.4 103 7111.6 127 4386.9 78 5614 4561
APR-SEP 6367.4 103 7799.7 127 4895.1 79 6158 4999
JAN-JUL 6532.7 100 7870.7 120 5175.2 79 6555 5447 366.61 85
JAN-SEP 7120.0 100 8558.8 121 5679.5 80 7099 5886 366.61 85
OCT-SEP 7822.0 98 9260.8 116 6381.5 80 7958
GRANDE RONDE - NEAR PERRY APR-AUG 275.0 158 407.6 234 159.4 92 174 100
APR-JUL 272.8 158 403.7 234 157.7 92 172 99
APR-SEP 277.5 158 409.6 233 160.9 92 176 101
JAN-JUL 399.8 148 522.1 193 300.7 111 271 197 28.06 85
JAN-SEP 404.2 147 532.4 194 304.4 111 274 199 28.06 85
OCT-SEP 418.4 144 546.6 188 318.6 110 291
LOSTINE - NR LOSTINE APR-AUG 112.8 100 136.6 121 86.2 76 113 83
APR-JUL 108.2 100 126.5 117 83.2 77 108 80
APR-SEP 115.6 100 139.4 121 89.8 78 116 85
JAN-JUL 114.5 96 132.8 112 90.9 77 119 92 3.12 62
JAN-SEP 120.5 95 145.3 115 96.9 77 126 97 3.12 62
OCT-SEP 125.6 92 150.4 110 102.0 75 137
GRANDE RONDE - TROY APR-AUG 1546.3 120 2020.2 156 1077.9 83 1293 929
APR-JUL 1487.7 119 1945.2 155 1032.3 82 1251 899
APR-SEP 1594.6 120 2074.5 156 1117.2 84 1331 958
JAN-JUL 2094.3 112 2550.2 136 1687.5 90 1872 1483 164.98 66
JAN-SEP 2199.2 113 2677.4 137 1771.1 91 1952 1542 164.98 66
OCT-SEP 2372.4 109 2850.6 131 1944.3 90 2170
SNAKE - LOWER GRANITE DAM APR-AUG 21182.4 100 25778.5 122 16358.4 77 21121 17269
APR-JUL 19877.8 100 24165.7 121 15195.4 76 19946 16378
APR-SEP 22389.7 101 27152.3 122 17485.0 79 22232 18205
JAN-JUL 27612.2 101 31231.9 114 22254.0 81 27450 22244 2313.73 70
JAN-SEP 30243.0 102 33928.8 114 24543.7 83 29736 24072 2313.73 70
OCT-SEP 33821.7 99 37507.5 109 28122.4 82 34287
---------------------Forecast --------------------- ----------Runoff-----------
River Basin Period Probable % Maximum % Minimum % Average PrevYR CurYR %
CLEARWATER - AT OROFINO APR-AUG 4425.3 98 5063.9 112 3457.6 76 4539 3674
APR-JUL 4301.4 97 4897.8 111 3349.0 76 4417 3580
APR-SEP 4523.4 98 5171.5 112 3551.3 77 4632 3759
JAN-JUL 5263.1 95 6062.2 110 4471.8 81 5531 4575 259.30 57
JAN-SEP 5508.5 96 6318.4 110 4651.9 81 5745 4755 259.30 57
OCT-SEP 5880.8 93 6690.6 106 5024.2 80 6313
NF CLEARWATER - DWORSHAK DAM APR-AUG 2291.5 90 2676.8 105 1796.2 70 2554 1628
APR-JUL 2215.9 90 2598.2 105 1736.4 70 2474 1571
APR-SEP 2365.3 90 2737.7 105 1845.2 70 2620 1685
JAN-JUL 3070.4 90 3640.9 107 2637.0 78 3397 2281 203.25 53
JAN-SEP 3206.7 91 3792.5 107 2745.9 78 3543 2395 203.25 53
OCT-SEP 3547.1 89 4132.9 103 3086.2 77 3998
CLEARWATER - AT SPALDING APR-AUG 6910.7 94 8060.7 110 5416.6 74 7319 5367
APR-JUL 6672.3 94 7819.6 110 5232.3 74 7117 5205
APR-SEP 7083.8 95 8236.3 110 5580.3 75 7481 5523
JAN-JUL 8802.3 93 10232.7 109 7557.1 80 9421 7075 497.78 52
JAN-SEP 9188.8 94 10645.3 109 7846.6 80 9785 7393 497.78 52
OCT-SEP 9953.0 92 11409.4 105 8610.8 79 10841
COLUMBIA - MCNARY DAM APR-AUG 73825.9 84 83188.4 94 61558.8 70 88088 62451
APR-JUL 66608.4 83 75925.8 94 55287.7 68 80726 56877
APR-SEP 78264.5 84 87974.4 95 66496.0 72 92790 66757
JAN-JUL 82549.3 83 92045.6 92 71547.5 72 99964 74344 5652.53 64
JAN-SEP 94140.1 84 104793.2 94 83164.7 74 112028 84224 5652.53 64
OCT-SEP 106795.6 84 117448.7 93 95820.3 76 126785
UMATILLA - NEAR GIBBON APR-AUG 82.8 104 114.2 143 59.3 74 80 49
APR-JUL 79.7 103 110.7 143 56.6 73 77 46
APR-SEP 85.6 104 117.3 142 61.8 75 82 51
JAN-JUL 138.6 96 171.4 118 114.9 79 145 107 18.77 59
JAN-SEP 144.3 96 177.6 118 120.0 80 150 112 18.77 59
OCT-SEP 165.4 95 198.7 114 141.1 81 174
UMATILLA - AT PENDLETON APR-AUG 180.1 116 252.4 163 119.3 77 155 88
APR-JUL 176.6 116 247.7 163 116.9 77 152 86
APR-SEP 183.5 116 256.4 162 121.5 77 158 91
JAN-JUL 340.4 104 427.1 131 266.6 82 326 245 55.13 70
JAN-SEP 347.2 105 435.0 131 271.2 82 331 249 55.13 70
OCT-SEP 401.8 106 489.6 129 325.8 86 380
---------------------Forecast --------------------- ----------Runoff-----------
River Basin Period Probable % Maximum % Minimum % Average PrevYR CurYR %
NF JOHN DAY - AT MONUMENT APR-AUG 857.7 154 1119.3 201 567.8 102 558 441
APR-JUL 847.1 154 1101.1 200 557.2 101 551 437
APR-SEP 869.0 154 1131.7 201 577.1 102 564 445
JAN-JUL 1403.4 161 1669.8 192 1101.4 127 869 870 169.48 146
JAN-SEP 1424.6 161 1700.3 193 1122.3 127 883 879 169.48 146
OCT-SEP 1549.1 164 1824.8 193 1246.9 132 945
JOHN DAY - AT SERVICE CK APR-AUG 1277.1 162 1613.3 204 849.2 107 790 641
APR-JUL 1257.6 161 1579.1 202 834.4 107 781 636
APR-SEP 1293.9 162 1642.2 206 863.5 108 798 647
JAN-JUL 2019.8 160 2419.9 192 1573.2 125 1262 1369 282.60 154
JAN-SEP 2064.2 161 2473.1 193 1601.7 125 1279 1380 282.60 154
OCT-SEP 2262.9 163 2671.8 192 1800.4 129 1392
COLUMBIA - JOHN DAY DAM APR-AUG 76255.5 87 85755.4 98 63648.1 73 87643 64798
APR-JUL 69140.0 86 78511.5 97 57297.7 71 80636 59056
APR-SEP 80797.3 87 90779.3 98 68649.7 74 92354 68976
JAN-JUL 86440.0 85 96436.5 95 75135.8 74 101178 77510 6165.02 65
JAN-SEP 98476.6 87 109328.9 97 86920.9 77 112896 87430 6165.02 65
OCT-SEP 111723.1 87 122575.6 96 100167.6 78 128295
DESCHUTES - AT MOODY NR BIGGS APR-AUG 1606.9 98 1680.0 103 1547.2 94 1637 1512
APR-JUL 1333.5 98 1404.3 103 1276.4 93 1365 1245
APR-SEP 1872.3 98 1946.6 102 1810.1 95 1902 1773
JAN-JUL 2531.0 98 2623.4 101 2466.6 95 2590 2479 604.24 91
JAN-SEP 3069.8 98 3166.2 101 3000.2 96 3127 3008 604.24 91
OCT-SEP 4020.9 98 4117.2 100 3951.2 96 4118
COLUMBIA - THE DALLES DAM APR-AUG 76669.8 86 86230.3 97 64012.1 72 89196 65535
APR-JUL 69507.3 85 78876.7 96 57557.4 70 81933 59555
APR-SEP 81396.7 86 91444.4 97 69196.8 73 94166 69948
JAN-JUL 87383.4 84 97502.6 94 76040.2 73 103714 78845 6544.52 65
JAN-SEP 99725.8 86 110667.4 95 88117.2 76 115946 89238 6544.52 65
OCT-SEP 113800.8 86 124742.6 94 102192.2 77 132314
COLUMBIA - BONNEVILLE DAM APR-AUG 77722.6 86 87497.0 97 64964.9 72 90174 65814
APR-JUL 70557.3 85 80017.5 97 58402.1 71 82678 59803
APR-SEP 82540.2 87 92783.0 97 70235.5 74 95202 70368
JAN-JUL 89102.7 85 99440.9 94 77608.5 74 105246 81033 6878.84 65
JAN-SEP 101713.0 86 112773.6 96 89911.6 76 117770 91598 6878.84 65
OCT-SEP 116558.7 87 127618.9 95 104757.2 78 134527
---------------------Forecast --------------------- ----------Runoff-----------
River Basin Period Probable % Maximum % Minimum % Average PrevYR CurYR %
MCKENZIE - NEAR VIDA APR-AUG 995.9 91 1336.6 122 820.1 75 1091 1058
APR-JUL 880.1 90 1208.2 124 720.2 74 978 896
APR-SEP 1092.6 91 1449.2 121 920.0 77 1195 1214
JAN-JUL 1870.3 93 2230.0 111 1701.6 85 2001 2094 554.00 97
JAN-SEP 2080.9 94 2470.8 111 1898.0 86 2219 2412 554.00 97
OCT-SEP 2874.8 97 3264.8 111 2691.9 91 2951
NORTH SANTIAM - AT MEHAMA APR-AUG 685.7 85 937.5 117 526.8 66 802 722
APR-JUL 636.4 84 881.2 117 483.8 64 753 679
APR-SEP 732.7 86 988.6 116 563.5 66 855 762
JAN-JUL 1424.3 84 1803.9 106 1248.6 73 1703 1856 360.56 67
JAN-SEP 1521.3 84 1909.0 106 1327.1 74 1805 1939 360.56 67
OCT-SEP 2287.2 91 2674.9 106 2093.1 83 2522
SOUTH SANTIAM - AT WATERLOO APR-AUG 508.6 89 794.6 139 316.4 55 571 518
APR-JUL 488.2 87 765.4 137 303.6 54 558 506
APR-SEP 523.7 89 819.1 139 327.3 55 590 524
JAN-JUL 1266.9 87 1626.5 111 1067.6 73 1462 1609 356.00 68
JAN-SEP 1304.4 87 1670.0 112 1098.8 74 1494 1627 356.00 68
OCT-SEP 1982.5 92 2348.2 109 1776.9 83 2146
WILLAMETTE - AT SALEM APR-AUG 4114.2 91 5927.8 131 2821.2 62 4539 4216
APR-JUL 3922.1 91 5681.8 131 2676.9 62 4324 4013
APR-SEP 4283.5 90 6141.0 129 2958.5 62 4754 4397
JAN-JUL 10377.8 91 12686.9 111 9099.6 79 11461 13126 3335.23 80
JAN-SEP 10750.5 90 13134.4 110 9456.6 80 11890 13511 3335.23 80
OCT-SEP 15761.1 97 18144.9 111 14467.1 89 16315
CLACKAMAS - AT ESTACADA APR-AUG 564.7 83 777.1 115 445.4 66 677 622
APR-JUL 514.2 82 717.7 115 401.5 64 624 574
APR-SEP 621.8 85 831.6 113 484.6 66 733 668
JAN-JUL 1152.2 86 1432.1 107 1016.8 76 1341 1413 263.01 65
JAN-SEP 1248.2 86 1540.8 106 1102.9 76 1450 1507 263.01 65
OCT-SEP 1763.9 89 2056.4 104 1618.6 82 1975
LEWIS - MERWIN DAM APR-AUG 909.2 94 1239.7 128 685.9 71 969 940
APR-JUL 847.8 96 1173.2 133 643.7 73 881 877
APR-SEP 988.2 91 1322.4 122 726.8 67 1082 995
JAN-JUL 1960.5 91 2437.3 113 1717.4 79 2162 2261 405.89 53
JAN-SEP 2055.9 87 2533.1 107 1807.0 76 2363 2379 405.89 53
OCT-SEP 3058.2 89 3535.3 103 2809.2 82 3417
---------------------Forecast --------------------- ----------Runoff-----------
River Basin Period Probable % Maximum % Minimum % Average PrevYR CurYR %
COWLITZ - MAYFIELD RESERVOIR APR-AUG 1673.3 95 2233.0 127 1369.3 78 1765 1168
APR-JUL 1562.2 95 2112.1 128 1280.5 78 1648 1071
APR-SEP 1766.0 95 2408.2 129 1450.8 78 1864 1252
JAN-JUL 2824.2 88 3583.3 112 2561.8 80 3204 2489 459.52 50
JAN-SEP 3013.7 88 3796.1 111 2723.5 80 3420 2670 459.52 50
OCT-SEP 3966.8 86 4749.2 103 3676.6 80 4624
COWLITZ - AT CASTLE ROCK APR-AUG 2214.3 94 3023.6 128 1778.3 75 2366 1657
APR-JUL 2074.1 94 2867.1 130 1664.8 75 2213 1545
APR-SEP 2317.7 93 3233.0 129 1893.2 76 2504 1748
JAN-JUL 3964.0 85 5162.5 111 3533.5 76 4638 3925 710.76 50
JAN-SEP 4214.3 86 5439.1 110 3796.5 77 4929 4128 710.76 50
OCT-SEP 5748.5 85 6973.3 103 5330.7 79 6739
ROGUE - AT RAYGOLD APR-AUG 883.1 116 1150.3 152 706.9 93 759 694
APR-JUL 799.3 116 1052.3 153 630.6 92 687 622
APR-SEP 960.4 116 1237.1 149 775.2 93 831 763
JAN-JUL 1777.5 123 2167.0 150 1574.7 109 1442 1541 502.76 120
JAN-SEP 1943.2 123 2351.8 148 1717.3 108 1586 1682 502.76 120
OCT-SEP 2542.7 125 2951.2 145 2316.7 114 2032
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