Northwest River Forecast Center
Water Supply Seasonal Forecasts
Ensemble Date: 2025-02-16 Issued Date: 2025-02-16
Water Year 2025
---------------------Forecast --------------------- ----------Runoff-----------
River Basin Period Probable % Maximum % Minimum % Average PrevYR CurYR %
SILVIES - NEAR BURNS APR-AUG 142.1 201 212.1 300 85.5 121 71 75
APR-JUL 140.4 201 208.6 298 84.2 120 70 75
APR-SEP 144.3 202 215.9 302 87.3 122 71 76
JAN-JUL 242.3 223 340.4 314 201.5 186 108 125 15.03 141
JAN-SEP 245.8 223 346.9 315 204.4 186 110 126 15.03 141
OCT-SEP 253.8 219 354.8 306 212.4 183 116
DONNER UND BLITZEN - NR FRENCHGLEN APR-AUG 84.0 140 122.2 203 59.9 100 60 69
APR-JUL 80.8 141 117.4 204 56.9 99 57 67
APR-SEP 86.9 139 125.5 201 62.5 100 63 72
JAN-JUL 122.0 164 161.8 218 102.6 138 74 90 12.24 189
JAN-SEP 128.3 162 169.6 214 108.5 137 79 95 12.24 189
OCT-SEP 143.2 163 184.6 210 123.5 141 88
DUNGENESS - NEAR SEQUIM APR-AUG 123.9 91 156.6 115 103.9 77 136 79
APR-JUL 112.6 93 141.3 117 93.6 77 121 71
APR-SEP 133.2 92 169.1 117 111.3 77 145 84
JAN-JUL 159.9 82 196.0 101 141.0 72 195 135 19.82 45
JAN-SEP 182.7 84 222.2 102 159.4 73 219 148 19.82 45
OCT-SEP 239.8 84 279.3 97 216.4 75 287
SKAGIT - NEAR CONCRETE APR-AUG 4581.8 83 5530.5 100 3897.5 70 5549 3847
APR-JUL 4030.4 81 4950.6 100 3441.5 69 4959 3376
APR-SEP 4938.1 83 5916.4 99 4184.3 70 5955 4137
JAN-JUL 5740.5 78 7024.3 96 5131.2 70 7334 5683 669.76 49
JAN-SEP 6590.4 79 7924.3 95 5894.8 71 8330 6443 669.76 49
OCT-SEP 9067.0 83 10400.9 95 8371.4 76 10972
COLUMBIA - MICA DAM APR-AUG 9307.4 83 10400.6 93 7925.4 71 11166 8865
APR-JUL 7445.2 82 8767.5 97 6217.0 69 9064 6864
APR-SEP 10193.9 83 11562.0 94 8651.1 70 12296 10139
JAN-JUL 8162.5 83 9530.2 97 6908.4 70 9850 7469 377.71 90
JAN-SEP 10871.7 83 12330.1 94 9350.8 71 13082 10743 377.71 90
OCT-SEP 12713.8 88 14172.1 98 11192.9 77 14472
COLUMBIA - REVELSTOKE DAM APR-AUG 14323.3 91 15702.4 100 12332.7 78 15746 12525
APR-JUL 11596.0 89 13249.2 102 10058.1 77 13046 9980
APR-SEP 15620.7 91 17317.3 100 13431.7 78 17242 14161
JAN-JUL 12633.1 89 14307.5 101 11050.4 78 14115 10965 544.91 97
JAN-SEP 16602.5 91 18373.2 100 14469.5 79 18311 15147 544.91 97
OCT-SEP 19426.5 96 21197.3 104 17293.6 85 20340
---------------------Forecast --------------------- ----------Runoff-----------
River Basin Period Probable % Maximum % Minimum % Average PrevYR CurYR %
COLUMBIA - ARROW LAKES (HUGH KEENLEYSIDE DAM)APR-AUG 19679.7 89 22051.0 100 17079.0 77 22135 17325
APR-JUL 16574.3 88 18635.1 99 14205.7 76 18779 14200
APR-SEP 21619.7 90 24106.2 100 18434.3 77 24059 19383
JAN-JUL 18559.6 90 20645.1 100 16093.4 78 20698 16327 976.18 99
JAN-SEP 23530.5 91 26188.6 101 20411.4 79 25978 21509 976.18 99
OCT-SEP 27871.3 96 30529.4 105 24752.2 85 29084
KOOTENAI - LIBBY DAM APR-AUG 4451.3 73 5299.7 87 3689.7 61 6080 4789
APR-JUL 4061.4 73 4878.1 88 3292.7 59 5570 4352
APR-SEP 4696.0 73 5574.1 87 4029.1 63 6429 5091
JAN-JUL 4501.3 72 5345.9 86 3735.7 60 6227 4940 205.73 63
JAN-SEP 5163.6 73 6039.2 85 4500.9 64 7086 5679 205.73 63
OCT-SEP 5955.6 75 6831.2 86 5292.9 66 7981
KOOTENAI - AT LEONIA APR-AUG 5423.9 73 6428.4 87 4474.1 60 7409 5708
APR-JUL 4976.5 73 5924.5 86 4065.7 59 6858 5228
APR-SEP 5711.2 73 6766.4 87 4835.9 62 7803 6043
JAN-JUL 5662.9 72 6642.3 84 4723.1 60 7877 6189 275.90 59
JAN-SEP 6430.1 73 7415.4 84 5526.5 63 8822 7003 275.90 59
OCT-SEP 7339.0 74 8324.3 84 6435.4 65 9923
MOYIE - AT EASTPORT APR-AUG 285.4 73 369.1 95 197.2 51 390 271
APR-JUL 274.6 72 356.8 93 190.1 50 382 267
APR-SEP 291.7 74 376.8 95 202.7 51 395 274
JAN-JUL 299.2 69 383.4 89 215.5 50 431 322 7.23 42
JAN-SEP 318.0 72 403.4 91 227.8 51 443 330 7.23 42
OCT-SEP 330.0 69 415.4 87 239.8 50 479
KOOTENAI - AT BONNERS FERRY APR-AUG 5893.9 73 7071.5 88 4819.2 60 8061 6208
APR-JUL 5401.8 72 6583.1 88 4424.3 59 7495 5703
APR-SEP 6199.8 73 7432.4 88 5180.1 61 8463 6562
JAN-JUL 6133.8 71 7300.0 85 5115.2 60 8596 6723 290.95 58
JAN-SEP 6946.6 73 8143.3 85 5948.1 62 9565 7582 290.95 58
OCT-SEP 7884.6 74 9081.3 85 6886.1 64 10724
DUNCAN - DUNCAN DAM APR-AUG 1674.5 82 1915.0 94 1494.7 73 2040 1617
APR-JUL 1387.7 81 1635.7 95 1210.3 71 1713 1330
APR-SEP 1832.1 82 2051.7 92 1627.9 73 2224 1794
JAN-JUL 1507.1 81 1765.5 95 1324.1 72 1849 1474 67.76 89
JAN-SEP 1946.2 82 2193.3 93 1742.6 74 2361 1938 67.76 89
OCT-SEP 2284.4 87 2531.6 97 2080.8 79 2620
---------------------Forecast --------------------- ----------Runoff-----------
River Basin Period Probable % Maximum % Minimum % Average PrevYR CurYR %
KOOTENAI - KOOTENAY L AT QUEENS BAY APR-AUG 11812.9 78 13226.0 88 9704.6 64 15052 11303
APR-JUL 10671.6 77 12126.5 88 8734.2 63 13836 10270
APR-SEP 12395.6 78 14019.1 88 10292.2 65 15842 11963
JAN-JUL 12034.7 76 13478.0 86 10302.7 65 15754 12270 563.43 63
JAN-SEP 13745.8 77 15275.3 86 11946.3 67 17761 13963 563.43 63
OCT-SEP 15607.5 78 17137.1 86 13808.1 69 19885
SLOCAN - NEAR CRESCENT VALLEY APR-AUG 1612.6 87 1795.2 97 1251.6 68 1850 1293
APR-JUL 1461.7 86 1682.1 98 1138.5 67 1708 1195
APR-SEP 1694.8 88 1883.4 97 1314.6 68 1933 1352
JAN-JUL 1639.1 87 1844.0 97 1299.5 69 1892 1416 75.00 84
JAN-SEP 1854.1 88 2042.6 97 1481.4 70 2116 1573 75.00 84
OCT-SEP 2078.6 88 2267.0 96 1705.9 72 2364
COLUMBIA - AT BIRCHBANK APR-AUG 32928.3 83 36586.6 92 28009.6 70 39736 30510
APR-JUL 28464.1 81 31898.6 91 24409.4 70 34960 26164
APR-SEP 35551.2 83 39383.1 92 30071.6 71 42578 33308
JAN-JUL 31963.1 82 35423.8 90 27624.2 71 39168 30729 1623.32 79
JAN-SEP 38858.9 83 42992.7 92 33612.9 72 46786 37873 1623.32 79
OCT-SEP 45263.1 86 49396.9 94 40017.1 76 52397
BLACKFOOT - NEAR BONNER APR-AUG 465.4 54 576.9 67 320.0 37 855 373
APR-JUL 433.9 54 542.7 67 300.1 37 811 346
APR-SEP 492.5 55 607.2 68 344.6 39 891 396
JAN-JUL 498.8 53 622.5 66 365.3 39 937 441 34.54 63
JAN-SEP 553.6 54 691.4 68 409.4 40 1017 491 34.54 63
OCT-SEP 627.3 56 765.0 68 483.0 43 1126
CLARK FORK - ABOVE BLACKFOOT APR-AUG 398.9 63 636.3 100 245.0 38 637 390
APR-JUL 366.7 62 594.6 100 227.9 38 594 365
APR-SEP 432.4 64 680.9 100 265.9 39 680 415
JAN-JUL 473.4 63 702.8 93 341.1 45 756 529 55.53 73
JAN-SEP 538.8 64 789.0 94 379.1 45 842 579 55.53 73
OCT-SEP 651.1 65 901.3 90 491.4 49 996
CLARK FORK - ABOVE MISSOULA APR-AUG 870.5 58 1199.0 80 590.8 40 1492 763
APR-JUL 815.8 58 1123.8 80 549.7 39 1405 711
APR-SEP 924.7 59 1272.2 81 645.4 41 1571 812
JAN-JUL 984.5 58 1297.5 77 737.1 44 1693 970 90.07 69
JAN-SEP 1095.3 59 1445.9 78 819.7 44 1859 1070 90.07 69
OCT-SEP 1281.2 60 1631.8 77 1005.6 47 2122
---------------------Forecast --------------------- ----------Runoff-----------
River Basin Period Probable % Maximum % Minimum % Average PrevYR CurYR %
BITTERROOT - NEAR DARBY APR-AUG 392.8 79 525.9 106 269.7 54 497 358
APR-JUL 368.6 79 490.1 105 249.3 54 465 335
APR-SEP 411.6 79 549.7 106 287.8 55 519 380
JAN-JUL 400.3 77 522.0 100 281.1 54 521 378 16.45 68
JAN-SEP 444.0 77 581.6 101 319.6 56 575 423 16.45 68
OCT-SEP 477.8 77 615.4 99 353.5 57 624
BITTERROOT - NEAR MISSOULA APR-AUG 1097.4 88 1305.7 105 820.3 66 1241 796
APR-JUL 1049.7 88 1253.2 105 780.9 66 1191 760
APR-SEP 1142.6 89 1353.9 105 862.2 67 1289 841
JAN-JUL 1193.0 86 1387.2 100 922.5 67 1385 922 59.55 67
JAN-SEP 1289.6 87 1490.7 100 1002.3 68 1484 1003 59.55 67
OCT-SEP 1416.8 85 1617.8 97 1129.5 68 1669
CLARK FORK - BELOW MISSOULA APR-AUG 1956.9 71 2419.0 87 1422.5 51 2767 1546
APR-JUL 1846.2 70 2288.8 87 1343.4 51 2630 1457
APR-SEP 2058.4 71 2536.3 88 1503.6 52 2893 1640
JAN-JUL 2156.6 69 2613.7 84 1680.6 54 3121 1875 152.40 68
JAN-SEP 2367.2 70 2855.6 84 1843.4 54 3384 2057 152.40 68
OCT-SEP 2689.8 70 3178.2 83 2166.0 56 3838
CLARK FORK - AT ST REGIS APR-AUG 2594.9 72 3127.1 87 1936.9 54 3610 2061
APR-JUL 2450.3 71 2956.0 86 1824.0 53 3429 1942
APR-SEP 2717.0 72 3279.6 87 2045.0 54 3771 2186
JAN-JUL 2851.1 69 3371.5 82 2264.7 55 4109 2486 193.87 64
JAN-SEP 3122.9 70 3676.8 83 2485.8 56 4451 2730 193.87 64
OCT-SEP 3541.1 70 4095.0 81 2904.0 58 5042
NF FLATHEAD - NEAR COLUMBIA FALLS APR-AUG 1184.4 70 1436.1 85 908.3 54 1690 1303
APR-JUL 1112.1 69 1350.4 84 846.8 53 1600 1234
APR-SEP 1237.0 71 1493.9 85 953.7 54 1750 1348
JAN-JUL 1224.1 69 1452.0 82 959.3 54 1771 1431 51.22 67
JAN-SEP 1347.1 70 1595.5 83 1066.2 56 1921 1546 51.22 67
OCT-SEP 1462.2 69 1710.6 80 1181.3 55 2133
MF FLATHEAD - NEAR WEST GLACIER APR-AUG 1278.2 77 1673.6 101 989.2 60 1651 1227
APR-JUL 1210.7 77 1580.8 100 938.3 60 1576 1170
APR-SEP 1324.9 78 1727.9 102 1022.9 60 1697 1267
JAN-JUL 1288.4 74 1671.3 96 1018.5 58 1744 1356 41.64 58
JAN-SEP 1392.5 75 1804.1 97 1117.8 60 1865 1453 41.64 58
OCT-SEP 1485.0 72 1896.7 92 1210.3 59 2065
---------------------Forecast --------------------- ----------Runoff-----------
River Basin Period Probable % Maximum % Minimum % Average PrevYR CurYR %
SF FLATHEAD - HUNGRY HORSE DAM APR-AUG 1598.1 78 1931.8 95 1299.2 64 2043 1375
APR-JUL 1536.4 78 1863.2 94 1249.7 63 1981 1335
APR-SEP 1638.6 78 1977.2 95 1339.9 64 2088 1408
JAN-JUL 1717.2 77 2031.6 91 1409.1 63 2236 1577 61.46 57
JAN-SEP 1810.8 77 2130.5 91 1499.5 64 2343 1651 61.46 57
OCT-SEP 1945.2 76 2264.9 88 1633.8 64 2567
FLATHEAD - AT COLUMBIA FALLS APR-AUG 4240.8 77 5158.5 94 3142.1 57 5473 3922
APR-JUL 4027.3 77 4907.9 94 2979.0 57 5237 3756
APR-SEP 4388.2 78 5318.2 94 3270.1 58 5634 4035
JAN-JUL 4301.0 74 5364.7 92 3384.6 58 5847 4364 113.74 43
JAN-SEP 4676.8 75 5770.3 92 3661.5 59 6244 4643 113.74 43
OCT-SEP 4970.1 72 6063.6 88 3954.9 57 6906
FLATHEAD - SELI’Š KSANKA QLISPE’ DAMAPR-AUG 4716.2 74 5811.6 91 3498.3 55 6396 4499
APR-JUL 4476.8 73 5547.6 90 3323.7 54 6137 4298
APR-SEP 4877.9 74 5982.5 91 3632.5 55 6577 4637
JAN-JUL 4897.0 70 6159.6 88 3776.9 54 7010 5115 224.29 58
JAN-SEP 5296.7 71 6624.5 89 4057.8 54 7450 5454 224.29 58
OCT-SEP 5764.6 70 7092.5 86 4525.7 55 8277
CLARK FORK - NEAR PLAINS APR-AUG 7445.5 73 9260.6 91 5766.2 56 10215 6688
APR-JUL 7068.8 73 8816.9 90 5432.2 56 9749 6329
APR-SEP 7748.1 73 9602.3 91 6041.4 57 10574 6971
JAN-JUL 7992.7 70 9888.6 87 6327.3 56 11342 7732 417.91 59
JAN-SEP 8660.7 71 10674.0 88 6927.0 57 12168 8375 417.91 59
OCT-SEP 9573.8 70 11587.0 85 7840.1 58 13632
CLARK FORK - CABINET GORGE DAM APR-AUG 8491.0 75 10546.7 93 6607.3 59 11280 6875
APR-JUL 8053.3 75 10001.6 93 6195.3 58 10767 6552
APR-SEP 8854.1 76 10963.2 94 6937.6 60 11639 7126
JAN-JUL 9025.2 72 11178.3 89 7132.5 57 12591 7995 329.31 41
JAN-SEP 9879.6 73 12136.6 90 7861.8 58 13463 8568 329.31 41
OCT-SEP 10682.8 71 12939.8 86 8665.0 58 14991
PRIEST - NEAR PRIEST RIVER APR-AUG 664.2 81 807.1 98 507.0 62 823 591
APR-JUL 627.3 78 760.1 95 485.2 61 800 576
APR-SEP 696.0 83 850.3 101 530.1 63 843 602
JAN-JUL 855.9 83 1008.2 98 658.0 64 1026 891 43.55 49
JAN-SEP 924.2 86 1108.8 104 718.2 67 1069 917 43.55 49
OCT-SEP 1027.5 84 1212.1 100 821.5 68 1217
---------------------Forecast --------------------- ----------Runoff-----------
River Basin Period Probable % Maximum % Minimum % Average PrevYR CurYR %
PEND OREILLE - ALBENI FALLS DAM APR-AUG 9762.3 76 11932.6 92 7535.3 58 12919 8475
APR-JUL 9231.1 75 11314.9 91 7111.7 57 12369 8056
APR-SEP 10192.8 76 12392.3 93 7888.2 59 13347 8809
JAN-JUL 10933.7 73 13280.3 89 8665.0 58 14922 10517 603.84 54
JAN-SEP 11894.3 75 14346.6 90 9398.1 59 15900 11270 603.84 54
OCT-SEP 13248.2 74 15700.4 88 10752.0 60 17911
COLUMBIA - AT INTL BOUNDARY APR-AUG 43132.1 80 49227.8 92 38134.3 71 53664 39674
APR-JUL 37833.9 78 43319.2 90 33443.4 69 48307 34884
APR-SEP 46039.3 81 52821.9 93 41125.6 72 56951 42785
JAN-JUL 43929.7 80 48418.2 88 38600.1 70 55223 42323 2263.26 70
JAN-SEP 51430.2 81 58383.4 91 45955.5 72 63866 50224 2263.26 70
OCT-SEP 59265.6 83 66218.8 92 53790.8 75 71709
KETTLE - AT LAURIER APR-AUG 1782.9 92 2359.8 122 1246.9 65 1928 1413
APR-JUL 1740.0 92 2293.5 122 1214.2 64 1886 1388
APR-SEP 1816.9 93 2400.6 123 1268.5 65 1954 1430
JAN-JUL 1845.2 90 2406.0 117 1359.1 66 2058 1732 42.80 72
JAN-SEP 1935.2 91 2511.3 118 1416.8 67 2125 1775 42.80 72
OCT-SEP 2014.7 90 2590.8 115 1496.3 67 2247
NF COEUR D ALENE - AT ENAVILLE APR-AUG 625.0 86 826.0 114 441.2 61 727 378
APR-JUL 604.5 85 800.1 113 423.9 60 708 363
APR-SEP 644.4 87 844.2 114 456.0 61 743 392
JAN-JUL 870.4 77 1069.4 95 687.7 61 1129 788 58.28 33
JAN-SEP 909.1 78 1111.4 95 719.6 62 1164 817 58.28 33
OCT-SEP 1022.9 77 1225.2 93 833.4 63 1322
ST JOE - AT CALDER APR-AUG 918.0 83 1149.0 103 685.7 62 1112 692
APR-JUL 884.8 82 1102.0 102 656.1 61 1076 663
APR-SEP 943.7 83 1177.9 104 708.2 62 1138 715
JAN-JUL 1144.1 81 1375.0 97 968.1 68 1415 965 59.36 43
JAN-SEP 1201.6 81 1442.5 98 1015.0 69 1477 1017 59.36 43
OCT-SEP 1306.9 80 1547.8 95 1120.3 68 1636
COEUR D ALENE - COEUR D ALENE LAKE APR-AUG 2124.7 86 2640.6 107 1499.7 61 2470 1309
APR-JUL 2078.7 86 2581.3 106 1461.0 60 2428 1287
APR-SEP 2162.5 86 2683.2 107 1532.7 61 2504 1336
JAN-JUL 3024.3 78 3715.7 96 2583.4 67 3868 2557 241.97 40
JAN-SEP 3108.7 79 3811.0 97 2653.6 67 3945 2606 241.97 40
OCT-SEP 3517.5 79 4219.8 95 3062.4 69 4461
---------------------Forecast --------------------- ----------Runoff-----------
River Basin Period Probable % Maximum % Minimum % Average PrevYR CurYR %
SPOKANE - AT SPOKANE APR-AUG 2183.4 86 2740.0 108 1549.4 61 2540 1374
APR-JUL 2119.4 86 2650.1 107 1493.4 60 2475 1338
APR-SEP 2227.1 86 2793.3 108 1588.8 61 2587 1402
JAN-JUL 3117.4 79 3817.4 97 2660.2 68 3926 2601 284.63 46
JAN-SEP 3232.6 80 3944.8 98 2753.4 68 4038 2665 284.63 46
OCT-SEP 3672.7 80 4384.8 96 3193.4 70 4584
SPOKANE - AT LONGLAKE APR-AUG 2477.3 88 3033.5 108 1802.7 64 2817 1538
APR-JUL 2371.5 87 2902.8 107 1709.0 63 2714 1470
APR-SEP 2566.0 88 3127.3 108 1880.1 65 2901 1595
JAN-JUL 3618.4 82 4372.9 99 3099.2 70 4433 2912 366.93 49
JAN-SEP 3812.6 83 4584.8 99 3281.8 71 4619 3038 366.93 49
OCT-SEP 4353.6 82 5125.9 97 3822.9 72 5295
COLUMBIA - GRAND COULEE DAM APR-AUG 47585.5 82 54490.3 94 41748.1 72 58186 42426
APR-JUL 42370.8 80 48660.3 92 37102.3 70 52774 37633
APR-SEP 50830.2 83 58314.3 95 45095.0 73 61483 45518
JAN-JUL 49253.6 80 55420.6 90 43547.6 71 61749 47073 2585.99 64
JAN-SEP 57543.6 82 65641.4 93 51252.3 73 70457 54958 2585.99 64
OCT-SEP 65841.6 84 73939.5 94 59550.5 76 78842
SIMILKAMEEN - NEAR HEDLEY APR-AUG 593.4 60 804.1 82 426.6 43 984 576
APR-JUL 585.2 61 786.5 82 421.9 44 956 557
APR-SEP 602.3 60 817.6 81 439.4 44 1004 588
JAN-JUL 680.0 63 894.4 83 536.7 50 1078 668 32.24 58
JAN-SEP 700.4 62 924.1 82 554.1 49 1126 699 32.24 58
OCT-SEP 775.5 62 999.2 80 629.2 50 1257
SIMILKAMEEN - NEAR NIGHTHAWK APR-AUG 672.6 50 930.2 70 445.0 33 1335 784
APR-JUL 671.3 52 906.9 71 444.8 35 1286 754
APR-SEP 681.4 50 953.4 70 455.9 33 1366 804
JAN-JUL 773.0 54 1024.7 71 546.7 38 1443 896 40.03 53
JAN-SEP 791.1 52 1055.2 69 559.0 37 1522 946 40.03 53
OCT-SEP 889.6 53 1153.7 68 657.5 39 1692
OKANOGAN - NEAR TONASKET APR-AUG 927.0 56 1333.5 81 672.8 41 1656 905
APR-JUL 885.0 57 1256.2 80 631.1 40 1566 856
APR-SEP 974.5 57 1386.9 81 713.8 42 1720 950
JAN-JUL 1080.5 59 1447.9 79 818.5 45 1832 1068 74.12 58
JAN-SEP 1173.3 59 1584.4 80 900.8 45 1986 1162 74.12 58
OCT-SEP 1344.1 60 1755.2 78 1071.6 48 2238
---------------------Forecast --------------------- ----------Runoff-----------
River Basin Period Probable % Maximum % Minimum % Average PrevYR CurYR %
METHOW - NEAR PATEROS APR-AUG 480.0 51 600.1 64 345.3 37 942 665
APR-JUL 458.3 51 577.3 64 324.9 36 904 641
APR-SEP 498.1 52 619.1 64 362.4 38 965 683
JAN-JUL 530.4 53 651.2 65 389.0 39 1001 793 30.36 70
JAN-SEP 571.5 54 692.9 65 426.5 40 1063 836 30.36 70
OCT-SEP 633.1 54 754.4 65 488.1 42 1162
STEHEKIN - AT STEHEKIN APR-AUG 562.1 72 664.4 85 455.8 59 778 531
APR-JUL 526.4 74 618.6 87 424.8 60 710 491
APR-SEP 581.2 71 693.5 85 473.2 58 814 554
JAN-JUL 598.2 74 708.3 88 514.3 64 809 616 23.32 49
JAN-SEP 655.5 72 786.9 86 563.7 62 913 679 23.32 49
OCT-SEP 734.6 70 866.0 83 642.8 61 1046
CHELAN - LAKE CHELAN DAM APR-AUG 753.2 68 940.2 85 575.2 52 1102 724
APR-JUL 711.4 69 901.3 88 551.0 54 1029 676
APR-SEP 777.7 68 961.5 84 589.5 52 1139 743
JAN-JUL 845.9 70 1068.7 88 707.7 58 1217 901 37.09 42
JAN-SEP 904.6 68 1127.0 85 758.8 57 1326 968 37.09 42
OCT-SEP 1022.5 67 1244.8 82 876.5 58 1518
WENATCHEE - AT PESHASTIN APR-AUG 1164.2 80 1407.2 97 948.0 65 1454 955
APR-JUL 1108.8 80 1344.1 97 902.1 65 1379 914
APR-SEP 1197.8 80 1451.6 97 978.6 65 1496 981
JAN-JUL 1322.9 77 1596.1 92 1133.5 66 1726 1239 74.45 44
JAN-SEP 1412.4 77 1695.6 92 1226.0 67 1842 1307 74.45 44
OCT-SEP 1572.1 72 1855.3 85 1385.7 64 2175
COLUMBIA - BLO ROCK ISLAND DAM APR-AUG 51178.0 80 58959.6 92 44768.7 70 64028 45464
APR-JUL 45374.6 78 52882.9 91 39868.1 68 58256 40631
APR-SEP 54724.9 81 62776.8 93 48298.8 72 67524 48596
JAN-JUL 53563.5 78 60633.5 89 47032.3 69 68440 51145 2932.45 64
JAN-SEP 62043.8 80 71300.8 92 55241.9 71 77708 59110 2932.45 64
OCT-SEP 70791.6 81 80048.6 92 63989.6 73 87167
COLUMBIA - BLO PRIEST RAPIDS DAM APR-AUG 51181.4 79 58956.9 91 44770.6 69 64656 45355
APR-JUL 45373.1 77 52875.5 90 39867.7 68 58905 40429
APR-SEP 54730.5 80 62782.7 92 48304.1 71 68162 48518
JAN-JUL 53635.5 77 60699.6 88 47105.8 68 69359 51017 2997.26 63
JAN-SEP 62121.0 79 71372.2 91 55321.4 70 78616 59106 2997.26 63
OCT-SEP 71207.7 81 80458.7 91 64408.0 73 88197
---------------------Forecast --------------------- ----------Runoff-----------
River Basin Period Probable % Maximum % Minimum % Average PrevYR CurYR %
YAKIMA - NEAR MARTIN APR-AUG 95.8 77 116.7 94 76.5 61 124 101
APR-JUL 92.3 78 111.6 95 74.1 63 118 96
APR-SEP 98.7 76 120.8 94 78.8 61 129 104
JAN-JUL 133.9 76 165.1 94 111.6 63 176 145 13.59 42
JAN-SEP 141.2 75 174.3 93 117.1 62 188 152 13.59 42
OCT-SEP 182.9 73 216.0 87 158.8 64 249
KACHESS - NEAR EASTON APR-AUG 84.7 79 106.0 99 69.2 64 108 78
APR-JUL 83.3 80 103.1 100 67.5 65 104 74
APR-SEP 86.1 76 107.8 95 70.5 62 114 85
JAN-JUL 121.5 77 148.6 94 101.6 64 158 118 11.32 39
JAN-SEP 125.5 75 156.4 93 104.6 62 168 129 11.32 39
OCT-SEP 155.3 71 186.2 85 134.4 62 218
CLE ELUM - NEAR ROSLYN APR-AUG 337.7 83 418.1 103 290.8 71 407 285
APR-JUL 330.2 86 403.9 105 284.9 74 386 267
APR-SEP 343.8 82 424.1 101 296.3 71 419 290
JAN-JUL 422.0 82 518.6 101 372.3 73 512 391 27.36 41
JAN-SEP 436.9 80 548.6 101 383.7 70 545 413 27.36 41
OCT-SEP 510.2 76 622.0 93 457.0 68 672
YAKIMA - NEAR HORLICK APR-AUG 815.0 89 980.0 107 716.9 78 916 628
APR-JUL 765.3 87 931.1 106 654.3 75 876 599
APR-SEP 895.1 93 1061.1 110 796.1 83 962 651
JAN-JUL 1058.8 81 1281.9 98 929.3 71 1311 989 90.27 41
JAN-SEP 1194.7 85 1405.6 101 1085.0 78 1398 1041 90.27 41
OCT-SEP 1399.2 80 1610.1 92 1289.5 74 1746
BUMPING - BELOW BUMPING DAM APR-AUG 114.9 95 137.5 114 92.5 77 120 85
APR-JUL 110.7 96 131.8 115 89.3 78 115 82
APR-SEP 117.9 95 140.9 113 95.6 77 125 88
JAN-JUL 144.7 92 184.9 117 130.0 82 158 123 9.33 40
JAN-SEP 151.9 91 193.5 115 138.4 83 168 129 9.33 40
OCT-SEP 170.8 83 212.4 103 157.3 76 207
TIETON - AT TIETON DAM APR-AUG 206.1 99 235.5 113 179.6 86 209 155
APR-JUL 185.3 97 213.2 112 160.2 84 191 141
APR-SEP 220.4 98 252.6 112 193.9 86 225 171
JAN-JUL 245.9 91 276.2 102 219.5 81 271 211 25.23 59
JAN-SEP 282.2 93 318.3 104 254.9 84 305 241 25.23 59
OCT-SEP 316.0 85 352.1 95 288.8 78 372
---------------------Forecast --------------------- ----------Runoff-----------
River Basin Period Probable % Maximum % Minimum % Average PrevYR CurYR %
NACHES - NEAR NACHES APR-AUG 642.9 83 810.7 105 542.9 70 773 510
APR-JUL 608.3 83 775.0 105 515.4 70 737 487
APR-SEP 676.0 84 838.0 104 573.4 71 807 547
JAN-JUL 790.3 77 1020.3 99 705.2 68 1030 742 50.53 34
JAN-SEP 848.7 77 1089.5 99 774.3 70 1100 802 50.53 34
OCT-SEP 935.1 72 1175.9 91 860.7 66 1297
YAKIMA - NEAR PARKER APR-AUG 1788.7 99 2039.6 113 1621.2 90 1804 1200
APR-JUL 1572.5 91 1897.5 110 1327.3 77 1721 1136
APR-SEP 2012.3 106 2258.8 119 1875.3 99 1899 1256
JAN-JUL 2122.8 82 2592.8 100 1933.1 74 2596 1906 187.40 43
JAN-SEP 2608.4 94 2930.9 106 2475.0 89 2774 2027 187.40 43
OCT-SEP 2970.6 87 3293.2 97 2837.2 83 3404
YAKIMA - AT KIONA APR-AUG 629.1 60 862.4 83 485.1 47 1043 567
APR-JUL 553.5 58 784.2 82 414.6 44 952 479
APR-SEP 693.6 60 934.5 81 543.3 47 1149 664
JAN-JUL 1030.0 58 1320.2 74 896.5 50 1785 1225 190.52 46
JAN-SEP 1163.8 59 1481.6 75 1017.8 51 1982 1410 190.52 46
OCT-SEP 1475.7 59 1793.5 71 1329.7 53 2516
SNAKE - JACKSON LAKE AT DAM APR-AUG 605.4 74 720.5 88 490.3 60 816 645
APR-JUL 562.5 73 676.8 88 457.5 59 771 622
APR-SEP 635.5 75 753.4 89 519.5 61 849 667
JAN-JUL 646.5 74 759.7 87 546.0 63 869 711 48.69 93
JAN-SEP 719.1 76 836.3 88 607.7 64 947 755 48.69 93
OCT-SEP 773.1 74 890.3 86 661.7 64 1039
GREYS - AB RES NR ALPINE APR-AUG 318.1 91 389.7 111 266.9 76 350 302
APR-JUL 285.1 89 348.5 109 244.2 76 321 278
APR-SEP 343.1 92 415.9 112 285.1 77 371 320
JAN-JUL 318.5 88 377.2 104 272.0 75 361 320 15.55 80
JAN-SEP 373.6 91 444.6 108 314.4 76 412 362 15.55 80
OCT-SEP 416.2 90 487.3 106 357.1 77 461
SALT - ABV PALISADES RES NR ETNA APR-AUG 339.5 101 423.8 127 265.1 79 335 361
APR-JUL 304.4 101 381.3 127 236.3 79 301 328
APR-SEP 376.6 102 466.4 127 296.8 81 368 393
JAN-JUL 383.2 100 461.8 121 320.3 84 383 414 40.26 99
JAN-SEP 454.7 101 543.6 121 377.9 84 450 479 40.26 99
OCT-SEP 548.7 101 637.6 117 471.9 87 545
---------------------Forecast --------------------- ----------Runoff-----------
River Basin Period Probable % Maximum % Minimum % Average PrevYR CurYR %
SNAKE - NEAR IRWIN APR-AUG 2877.8 86 3648.5 109 2305.1 69 3362 3117
APR-JUL 2611.3 84 3305.8 107 2114.3 68 3097 2889
APR-SEP 3092.8 86 3880.9 108 2475.0 69 3577 3311
JAN-JUL 3030.5 85 3723.5 104 2548.0 71 3584 3351 211.55 86
JAN-SEP 3535.9 87 4295.7 106 2908.8 72 4064 3773 211.55 86
OCT-SEP 3993.2 87 4753.0 103 3366.1 73 4612
SNAKE - NEAR HEISE APR-AUG 3198.6 89 4024.0 112 2552.2 71 3605 3357
APR-JUL 2886.6 87 3651.6 110 2332.8 71 3308 3127
APR-SEP 3441.8 89 4284.6 111 2747.4 71 3849 3549
JAN-JUL 3403.2 88 4155.3 107 2862.0 74 3871 3651 256.77 90
JAN-SEP 3948.0 89 4792.1 109 3276.6 74 4413 4074 256.77 90
OCT-SEP 4511.6 89 5355.7 106 3840.2 76 5050
FALL RIVER - NEAR CHESTER APR-AUG 299.5 85 369.8 105 217.2 62 352 280
APR-JUL 287.8 88 356.1 108 212.2 65 329 258
APR-SEP 320.7 85 390.2 104 230.1 61 377 306
JAN-JUL 366.5 88 429.5 103 290.7 70 416 346 40.83 91
JAN-SEP 394.2 85 464.4 100 307.9 66 464 394 40.83 91
OCT-SEP 478.2 86 548.5 98 391.9 70 559
HENRYS FORK - AT ST. ANTHONY APR-AUG 679.1 94 810.3 113 479.4 67 720 565
APR-JUL 598.6 94 722.1 113 432.9 68 639 506
APR-SEP 750.9 95 884.9 111 529.2 67 794 618
JAN-JUL 875.6 94 999.5 107 714.1 77 931 788 140.26 90
JAN-SEP 1022.3 94 1161.5 107 804.8 74 1086 901 140.26 90
OCT-SEP 1242.2 91 1381.4 102 1024.7 75 1358
TETON - NEAR ST. ANTHONY APR-AUG 363.3 88 487.0 118 277.5 67 412 419
APR-JUL 320.1 87 429.2 116 237.2 64 368 381
APR-SEP 404.8 91 531.1 119 310.2 69 447 450
JAN-JUL 385.4 86 496.2 111 307.4 69 448 453 31.74 84
JAN-SEP 469.8 89 598.4 114 383.1 73 526 523 31.74 84
OCT-SEP 547.9 89 676.4 110 461.2 75 614
HENRYS FORK - AT REXBURG APR-AUG 1162.1 76 1460.7 95 854.7 56 1536 1221
APR-JUL 1043.6 78 1328.0 99 764.2 57 1335 1080
APR-SEP 1281.9 75 1582.5 93 955.3 56 1710 1340
JAN-JUL 1397.2 81 1650.2 96 1109.8 64 1721 1403 161.60 81
JAN-SEP 1649.9 79 1895.3 90 1290.1 62 2096 1664 161.60 81
OCT-SEP 2051.6 81 2296.9 91 1691.8 67 2527
---------------------Forecast --------------------- ----------Runoff-----------
River Basin Period Probable % Maximum % Minimum % Average PrevYR CurYR %
WILLOW CREEK - NEAR RIRIE APR-AUG 59.4 100 116.8 198 31.1 53 59 106
APR-JUL 58.4 100 113.8 195 30.7 53 58 103
APR-SEP 60.8 101 119.0 197 32.4 54 60 108
JAN-JUL 69.2 100 124.2 180 43.2 63 69 116 4.50 108
JAN-SEP 71.6 101 128.9 181 44.5 63 71 121 4.50 108
OCT-SEP 80.7 103 138.0 175 53.6 68 79
SNAKE - NEAR SHELLEY APR-AUG 3978.6 88 5073.6 112 3042.6 67 4520 4113
APR-JUL 3588.7 88 4599.3 112 2768.9 68 4090 3824
APR-SEP 4322.1 88 5432.2 111 3300.1 67 4905 4378
JAN-JUL 4402.2 91 5418.8 112 3621.8 75 4841 4707 419.63 108
JAN-SEP 5145.5 91 6231.2 110 4153.0 73 5656 5261 419.63 108
OCT-SEP 5965.9 90 7051.5 107 4973.4 75 6605
PORTNEUF - AT TOPAZ APR-AUG 66.3 100 85.3 129 54.0 82 66 91
APR-JUL 57.6 100 75.0 130 46.7 81 58 80
APR-SEP 73.9 102 94.8 131 60.6 84 72 99
JAN-JUL 82.8 99 96.8 116 72.5 87 83 114 11.01 91
JAN-SEP 98.6 101 117.5 120 86.4 88 98 133 11.01 91
OCT-SEP 123.1 104 142.0 120 110.9 94 118
SNAKE - AT AMERICAN FALLS DAM APR-AUG 2184.0 86 3315.2 131 1200.6 47 2531 2058
APR-JUL 2164.6 86 3201.7 127 1267.2 50 2529 2142
APR-SEP 2300.9 88 3460.2 132 1263.2 48 2624 2097
JAN-JUL 3236.3 89 4295.9 118 2393.6 66 3651 3221 510.88 86
JAN-SEP 3449.7 92 4532.5 121 2389.6 64 3745 3175 510.88 86
OCT-SEP 4385.9 90 5468.7 112 3325.8 68 4883
SALMON FALLS CREEK - NR SAN JACINTO APR-AUG 77.0 117 115.6 175 53.7 81 66 75
APR-JUL 75.1 116 113.2 175 52.3 81 65 74
APR-SEP 79.2 117 118.4 174 56.2 83 68 77
JAN-JUL 93.1 107 125.6 145 74.1 86 87 95 5.30 65
JAN-SEP 97.6 109 130.8 146 77.2 86 90 97 5.30 65
OCT-SEP 107.0 107 140.2 141 86.6 87 100
BIG LOST - AT HOWELL RANCH NEAR CHILLY APR-AUG 141.2 86 221.3 134 79.7 48 165 130
APR-JUL 131.6 85 205.0 133 73.2 47 154 123
APR-SEP 148.0 86 230.3 134 84.4 49 172 136
JAN-JUL 145.2 86 218.6 130 86.7 52 168 141 7.34 102
JAN-SEP 161.6 87 243.8 131 97.9 53 186 153 7.34 102
OCT-SEP 176.3 86 258.6 127 112.7 55 204
---------------------Forecast --------------------- ----------Runoff-----------
River Basin Period Probable % Maximum % Minimum % Average PrevYR CurYR %
BIG LOST - MACKAY RESERVOIR NEAR MACKAY APR-AUG 129.2 103 199.6 158 72.0 57 126 111
APR-JUL 117.3 103 181.2 160 64.0 56 113 98
APR-SEP 138.6 102 213.3 156 78.7 58 136 122
JAN-JUL 142.1 100 205.8 146 88.7 63 141 129 13.53 90
JAN-SEP 163.2 99 237.9 145 103.5 63 164 153 13.53 90
OCT-SEP 193.6 98 268.3 136 133.8 68 197
BIG WOOD - AT HAILEY APR-AUG 191.4 78 274.5 111 118.9 48 246 186
APR-JUL 177.7 77 255.8 110 109.9 47 232 177
APR-SEP 201.8 79 288.1 112 127.4 50 257 195
JAN-JUL 202.0 77 279.3 106 135.1 51 263 212 13.00 88
JAN-SEP 226.1 78 311.6 108 152.5 53 289 230 13.00 88
OCT-SEP 252.8 79 338.3 105 179.2 56 321
BIG WOOD - MAGIC DAM APR-AUG 155.9 66 289.6 123 79.1 34 235 152
APR-JUL 152.0 67 275.6 122 76.9 34 227 146
APR-SEP 160.5 67 297.8 124 81.6 34 240 154
JAN-JUL 189.3 69 313.3 115 107.2 39 273 188 20.72 194
JAN-SEP 198.6 69 335.5 117 112.0 39 286 196 20.72 194
OCT-SEP 195.4 64 332.2 108 108.8 35 307
LITTLE WOOD - NEAR CAREY APR-AUG 52.7 71 105.6 142 28.4 38 74 57
APR-JUL 50.9 71 100.4 141 27.6 39 71 54
APR-SEP 54.4 71 109.6 143 29.2 38 77 59
JAN-JUL 66.1 75 112.2 127 40.3 45 89 71 4.06 69
JAN-SEP 69.8 74 121.6 130 41.7 45 94 76 4.06 69
OCT-SEP 77.2 74 128.9 124 49.1 47 104
SNAKE - AT KING HILL APR-AUG 2135.5 73 3050.3 104 1877.2 64 2925 2822
APR-JUL 1726.1 70 2584.1 105 1480.8 60 2450 2374
APR-SEP 2609.2 76 3567.8 105 2278.2 67 3412 3271
JAN-JUL 2856.8 69 4011.0 97 2589.3 63 4129 3517 580.89 68
JAN-SEP 3738.1 73 4943.9 97 3382.5 66 5090 4413 580.89 68
OCT-SEP 4962.5 75 6168.2 93 4606.9 70 6626
BRUNEAU - NEAR HOT SPRINGS APR-AUG 143.8 80 200.9 112 103.2 57 180 216
APR-JUL 140.7 80 194.5 111 102.0 58 176 212
APR-SEP 146.4 80 205.9 112 104.5 57 183 218
JAN-JUL 180.4 83 233.9 108 137.7 63 217 257 9.69 65
JAN-SEP 187.3 83 245.3 109 140.1 62 225 263 9.69 65
OCT-SEP 200.9 83 258.9 107 153.7 64 242
---------------------Forecast --------------------- ----------Runoff-----------
River Basin Period Probable % Maximum % Minimum % Average PrevYR CurYR %
SNAKE - BELOW SWAN FALLS APR-AUG 2370.0 84 3309.2 118 2121.1 75 2812 2793
APR-JUL 1948.0 81 2835.6 118 1712.3 71 2405 2440
APR-SEP 2878.6 88 3825.9 117 2565.0 79 3258 3193
JAN-JUL 3241.5 78 4414.2 106 2995.5 72 4166 3685 625.06 70
JAN-SEP 4168.5 83 5377.2 107 3819.1 76 5020 4438 625.06 70
OCT-SEP 5439.9 83 6648.6 101 5090.5 77 6584
OWYHEE - OWYHEE DAM APR-AUG 342.4 107 692.6 215 218.2 68 321 595
APR-JUL 328.3 107 668.7 217 204.4 66 307 577
APR-SEP 356.6 106 714.6 213 230.4 69 336 611
JAN-JUL 761.4 139 1178.9 216 575.9 105 547 860 92.54 118
JAN-SEP 787.9 137 1231.5 214 602.3 105 575 894 92.54 118
OCT-SEP 847.3 132 1290.9 202 661.7 103 641
SF BOISE - ANDERSON RANCH DAM APR-AUG 476.2 99 603.4 126 336.4 70 480 375
APR-JUL 459.0 99 579.4 125 323.9 70 462 356
APR-SEP 492.1 100 622.4 126 350.7 71 495 389
JAN-JUL 528.1 96 659.3 120 400.6 73 550 434 26.87 80
JAN-SEP 561.5 96 702.3 120 427.5 73 583 468 26.87 80
OCT-SEP 605.3 95 746.1 117 471.3 74 637
BOISE - LUCKY PEAK DAM APR-AUG 1435.1 112 1737.9 135 1019.0 79 1284 1037
APR-JUL 1378.2 112 1642.9 133 973.7 79 1232 1002
APR-SEP 1483.4 112 1798.5 135 1058.6 80 1329 1076
JAN-JUL 1584.8 101 1952.7 125 1216.4 78 1566 1280 89.36 73
JAN-SEP 1705.7 103 2105.2 127 1302.4 78 1663 1354 89.36 73
OCT-SEP 1827.9 100 2227.4 122 1424.6 78 1829
BOISE - NEAR PARMA APR-AUG 466.3 88 749.2 141 403.9 76 531 492
APR-JUL 416.2 86 693.7 143 354.9 73 486 455
APR-SEP 526.3 90 812.0 139 431.9 74 584 546
JAN-JUL 661.5 87 947.5 124 589.2 77 761 632 89.57 76
JAN-SEP 771.6 90 1065.7 124 666.7 78 859 723 89.57 76
OCT-SEP 928.8 91 1222.9 120 823.9 81 1023
MALHEUR - NEAR DREWSEY APR-AUG 110.0 172 167.1 261 71.0 111 64 74
APR-JUL 108.5 171 163.3 257 70.0 110 64 74
APR-SEP 112.4 173 171.1 264 72.3 112 65 75
JAN-JUL 215.2 186 287.8 249 183.3 158 116 154 20.91 136
JAN-SEP 218.6 187 294.3 251 186.7 159 117 155 20.91 136
OCT-SEP 238.8 183 314.5 241 206.8 159 130
---------------------Forecast --------------------- ----------Runoff-----------
River Basin Period Probable % Maximum % Minimum % Average PrevYR CurYR %
NF MALHEUR - AT BEULAH APR-AUG 131.8 233 174.2 308 98.6 174 57 52
APR-JUL 124.8 232 164.2 306 94.3 176 54 50
APR-SEP 136.9 231 181.5 306 102.2 172 59 54
JAN-JUL 164.4 197 204.1 244 134.2 161 84 80 9.82 104
JAN-SEP 174.9 196 220.8 248 143.8 161 89 85 9.82 104
OCT-SEP 187.9 187 233.7 232 156.7 156 101
DEADWOOD - BELOW DEADWOOD RES APR-AUG 141.3 108 169.4 129 112.6 86 131 104
APR-JUL 135.9 109 164.5 131 109.5 88 125 103
APR-SEP 144.6 107 172.8 128 115.1 85 135 108
JAN-JUL 148.8 104 182.1 128 122.4 86 143 119 7.00 87
JAN-SEP 157.8 103 190.4 125 129.1 85 153 124 7.00 87
OCT-SEP 171.7 102 204.2 122 142.9 85 168
NF PAYETTE - CASCADE DAM APR-AUG 514.2 109 658.9 140 390.4 83 470 368
APR-JUL 500.6 108 636.9 138 379.7 82 463 362
APR-SEP 528.4 108 679.6 140 404.8 83 487 389
JAN-JUL 599.4 104 735.0 128 483.7 84 576 465 41.30 87
JAN-SEP 635.4 106 770.0 128 510.2 85 600 492 41.30 87
OCT-SEP 712.0 104 846.6 124 586.9 86 685
PAYETTE - NEAR HORSESHOE BEND APR-AUG 1696.2 110 2044.5 133 1283.0 83 1540 1274
APR-JUL 1619.4 109 1960.8 132 1233.8 83 1484 1233
APR-SEP 1757.8 110 2108.0 132 1330.2 83 1597 1329
JAN-JUL 1948.5 105 2354.0 127 1542.7 83 1854 1548 120.94 82
JAN-SEP 2068.3 105 2496.1 127 1661.0 84 1968 1644 120.94 82
OCT-SEP 2279.5 103 2707.3 123 1872.2 85 2208
PAYETTE - NEAR EMMETT APR-AUG 1400.4 110 1779.3 139 993.7 78 1277 1122
APR-JUL 1283.7 109 1656.6 141 894.4 76 1179 1025
APR-SEP 1486.7 112 1868.7 141 1071.5 81 1325 1159
JAN-JUL 1668.5 105 2107.1 133 1265.0 80 1589 1310 128.24 78
JAN-SEP 1870.5 108 2333.9 134 1442.9 83 1736 1444 128.24 78
OCT-SEP 2040.4 105 2503.9 129 1612.9 83 1947
WEISER - NEAR WEISER APR-AUG 464.1 122 605.0 159 358.3 94 380 294
APR-JUL 447.2 123 587.0 161 342.2 94 365 281
APR-SEP 479.2 123 619.5 159 370.5 95 389 302
JAN-JUL 938.3 146 1121.2 174 748.2 116 645 477 110.46 118
JAN-SEP 968.3 145 1152.4 172 775.5 116 669 498 110.46 118
OCT-SEP 1056.5 145 1240.7 171 863.8 119 726
---------------------Forecast --------------------- ----------Runoff-----------
River Basin Period Probable % Maximum % Minimum % Average PrevYR CurYR %
SNAKE - AT WEISER APR-AUG 5661.4 107 7308.1 138 4396.6 83 5311 5263
APR-JUL 4990.1 106 6550.4 139 3808.6 81 4718 4713
APR-SEP 6398.1 107 8098.3 136 5039.2 85 5956 5850
JAN-JUL 8090.1 105 9967.0 129 6638.5 86 7719 6876 1136.72 81
JAN-SEP 9498.3 106 11514.2 129 7910.6 88 8957 8013 1136.72 81
OCT-SEP 11402.9 102 13418.9 120 9815.3 88 11199
BURNT - NR HEREFORD APR-AUG 41.0 135 62.8 207 23.6 78 30 33
APR-JUL 40.1 135 61.7 208 23.4 79 30 31
APR-SEP 42.4 137 63.9 206 24.6 79 31 34
JAN-JUL 56.1 112 77.1 154 42.2 84 50 56 4.66 78
JAN-SEP 58.3 113 79.7 155 44.0 86 51 58 4.66 78
OCT-SEP 64.8 112 86.2 149 50.4 87 58
EAGLE CREEK - ABOVE SKULL CK APR-AUG 181.8 108 219.7 130 145.8 86 169 129
APR-JUL 172.4 107 206.1 128 136.6 85 161 124
APR-SEP 188.2 108 226.9 130 151.5 87 174 133
JAN-JUL 214.4 114 250.0 133 180.5 96 188 149 11.38 100
JAN-SEP 231.2 115 268.1 134 195.7 97 201 159 11.38 100
OCT-SEP 244.8 111 281.8 128 209.4 95 221
SNAKE - BROWNLEE DAM APR-AUG 6403.9 112 8193.7 143 4959.1 86 5736 5610
APR-JUL 5640.4 110 7383.6 144 4332.8 85 5125 5054
APR-SEP 7172.8 112 9026.2 141 5644.3 88 6398 6226
JAN-JUL 9118.1 110 11189.5 134 7533.2 90 8326 7488 1278.14 86
JAN-SEP 10596.3 110 12832.1 134 8896.8 93 9600 8660 1278.14 86
OCT-SEP 12610.6 106 14846.5 125 10911.1 92 11906
SNAKE - AT HELLS CANYON DAM APR-AUG 6403.9 106 8193.7 136 4959.1 82 6046 5743
APR-JUL 5640.4 104 7383.6 136 4332.8 80 5429 5183
APR-SEP 7172.8 107 9026.2 134 5644.3 84 6725 6355
JAN-JUL 9142.5 103 11213.8 127 7557.6 86 8834 7695 1301.77 83
JAN-SEP 10620.7 105 12856.5 127 8921.2 88 10130 8867 1301.77 83
OCT-SEP 12675.2 101 14911.0 119 10975.7 88 12500
IMNAHA - AT IMNAHA APR-AUG 318.1 118 399.3 148 237.7 88 269 195
APR-JUL 305.6 118 384.2 149 226.3 88 258 188
APR-SEP 327.1 118 410.0 148 246.3 89 277 201
JAN-JUL 358.3 114 434.9 138 271.8 86 315 247 19.75 95
JAN-SEP 382.4 114 461.5 138 291.6 87 334 260 19.75 95
OCT-SEP 412.1 112 491.1 134 321.2 88 366
---------------------Forecast --------------------- ----------Runoff-----------
River Basin Period Probable % Maximum % Minimum % Average PrevYR CurYR %
SALMON - AT SALMON APR-AUG 709.9 81 1054.7 121 511.9 59 873 632
APR-JUL 648.1 80 958.8 118 474.6 59 810 590
APR-SEP 760.5 82 1125.6 121 551.4 59 929 672
JAN-JUL 835.8 83 1146.5 114 667.0 66 1008 795 94.73 94
JAN-SEP 951.4 84 1313.2 117 743.3 66 1126 877 94.73 94
OCT-SEP 1136.1 84 1497.8 111 927.9 69 1346
SALMON - AT WHITEBIRD APR-AUG 5930.3 100 7341.6 124 4543.3 77 5917 4796
APR-JUL 5626.3 100 6960.6 124 4283.9 76 5614 4561
APR-SEP 6201.4 101 7641.2 124 4774.1 78 6158 4999
JAN-JUL 6404.7 98 7707.5 118 5042.8 77 6555 5447 358.31 85
JAN-SEP 7010.7 99 8388.2 118 5546.0 78 7099 5886 358.31 85
OCT-SEP 7712.7 97 9090.2 114 6248.0 79 7958
GRANDE RONDE - NEAR PERRY APR-AUG 274.1 157 407.1 234 162.6 93 174 100
APR-JUL 271.6 158 403.2 234 160.6 93 172 99
APR-SEP 276.5 157 409.2 233 164.3 93 176 101
JAN-JUL 390.4 144 512.9 190 291.4 108 271 197 26.78 83
JAN-SEP 394.7 144 523.1 191 294.9 108 274 199 26.78 83
OCT-SEP 408.9 141 537.3 185 309.1 106 291
LOSTINE - NR LOSTINE APR-AUG 113.4 100 136.4 121 85.8 76 113 83
APR-JUL 108.1 100 126.5 117 82.7 77 108 80
APR-SEP 115.6 100 139.2 120 89.3 77 116 85
JAN-JUL 114.1 96 132.4 111 90.6 76 119 92 3.07 62
JAN-SEP 120.4 95 144.8 115 96.4 76 126 97 3.07 62
OCT-SEP 125.5 92 149.9 110 101.5 74 137
GRANDE RONDE - TROY APR-AUG 1572.8 122 2041.0 158 1105.7 85 1293 929
APR-JUL 1515.2 121 1965.7 157 1059.1 85 1251 899
APR-SEP 1621.3 122 2095.3 157 1146.7 86 1331 958
JAN-JUL 2061.3 110 2520.8 135 1673.3 89 1872 1483 164.12 68
JAN-SEP 2166.0 111 2648.3 136 1758.3 90 1952 1542 164.12 68
OCT-SEP 2339.3 108 2821.6 130 1931.5 89 2170
SNAKE - LOWER GRANITE DAM APR-AUG 21280.3 101 25587.5 121 16389.5 78 21121 17269
APR-JUL 19908.8 100 24075.8 121 15228.7 76 19946 16378
APR-SEP 22501.5 101 26903.2 121 17504.4 79 22232 18205
JAN-JUL 27141.6 99 30917.7 113 22033.1 80 27450 22244 2267.18 70
JAN-SEP 29752.4 100 33661.1 113 24308.8 82 29736 24072 2267.18 70
OCT-SEP 33331.1 97 37239.9 109 27887.6 81 34287
---------------------Forecast --------------------- ----------Runoff-----------
River Basin Period Probable % Maximum % Minimum % Average PrevYR CurYR %
CLEARWATER - AT OROFINO APR-AUG 4491.1 99 5132.7 113 3524.0 78 4539 3674
APR-JUL 4367.7 99 4962.2 112 3413.3 77 4417 3580
APR-SEP 4583.5 99 5241.5 113 3618.7 78 4632 3759
JAN-JUL 5245.7 95 6057.5 110 4447.5 80 5531 4575 252.86 57
JAN-SEP 5491.2 96 6314.5 110 4622.8 80 5745 4755 252.86 57
OCT-SEP 5863.4 93 6686.7 106 4995.1 79 6313
NF CLEARWATER - DWORSHAK DAM APR-AUG 2345.1 92 2725.3 107 1853.6 73 2554 1628
APR-JUL 2274.1 92 2645.5 107 1793.0 72 2474 1571
APR-SEP 2421.4 92 2786.7 106 1903.0 73 2620 1685
JAN-JUL 3077.8 91 3667.2 108 2652.4 78 3397 2281 200.38 54
JAN-SEP 3214.6 91 3822.3 108 2762.4 78 3543 2395 200.38 54
OCT-SEP 3555.0 89 4162.8 104 3102.8 78 3998
CLEARWATER - AT SPALDING APR-AUG 7068.4 97 8207.3 112 5547.6 76 7319 5367
APR-JUL 6825.1 96 7965.4 112 5359.0 75 7117 5205
APR-SEP 7243.8 97 8383.9 112 5708.9 76 7481 5523
JAN-JUL 8851.4 94 10227.9 109 7545.1 80 9421 7075 488.28 53
JAN-SEP 9223.1 94 10647.4 109 7842.7 80 9785 7393 488.28 53
OCT-SEP 9987.2 92 11411.6 105 8606.9 79 10841
COLUMBIA - MCNARY DAM APR-AUG 73911.1 84 82888.5 94 61819.9 70 88088 62451
APR-JUL 66794.6 83 75455.6 93 55531.4 69 80726 56877
APR-SEP 78639.2 85 87487.2 94 66770.2 72 92790 66757
JAN-JUL 82268.0 82 90684.1 91 71198.6 71 99964 74344 5545.59 65
JAN-SEP 94115.5 84 104391.0 93 82840.2 74 112028 84224 5545.59 65
OCT-SEP 106771.0 84 117046.5 92 95495.7 75 126785
UMATILLA - NEAR GIBBON APR-AUG 84.9 106 118.0 148 61.2 77 80 49
APR-JUL 81.8 106 114.5 148 58.5 76 77 46
APR-SEP 87.6 106 121.1 147 63.6 77 82 51
JAN-JUL 138.0 95 171.2 118 114.8 79 145 107 18.42 60
JAN-SEP 143.8 96 177.5 118 119.9 80 150 112 18.42 60
OCT-SEP 164.9 95 198.5 114 141.0 81 174
UMATILLA - AT PENDLETON APR-AUG 186.2 120 259.7 168 123.1 79 155 88
APR-JUL 183.0 120 254.8 167 120.8 79 152 86
APR-SEP 189.2 120 263.8 167 125.3 79 158 91
JAN-JUL 335.3 103 421.6 129 264.1 81 326 245 54.11 71
JAN-SEP 342.2 103 429.5 130 268.8 81 331 249 54.11 71
OCT-SEP 396.8 104 484.1 127 323.4 85 380
---------------------Forecast --------------------- ----------Runoff-----------
River Basin Period Probable % Maximum % Minimum % Average PrevYR CurYR %
NF JOHN DAY - AT MONUMENT APR-AUG 853.9 153 1118.2 200 568.2 102 558 441
APR-JUL 843.3 153 1103.2 200 557.6 101 551 437
APR-SEP 863.9 153 1130.4 200 577.6 102 564 445
JAN-JUL 1395.2 160 1674.8 193 1093.1 126 869 870 167.85 149
JAN-SEP 1416.3 160 1705.5 193 1114.1 126 883 879 167.85 149
OCT-SEP 1540.8 163 1830.0 194 1238.6 131 945
JOHN DAY - AT SERVICE CK APR-AUG 1277.1 162 1614.1 204 853.1 108 790 641
APR-JUL 1256.8 161 1580.1 202 838.1 107 781 636
APR-SEP 1293.9 162 1641.5 206 867.8 109 798 647
JAN-JUL 2019.5 160 2426.3 192 1567.5 124 1262 1369 279.61 157
JAN-SEP 2066.9 162 2479.8 194 1596.0 125 1279 1380 279.61 157
OCT-SEP 2265.6 163 2678.5 192 1794.8 129 1392
COLUMBIA - JOHN DAY DAM APR-AUG 76441.8 87 85675.7 98 63927.5 73 87643 64798
APR-JUL 69346.8 86 78143.9 97 57552.9 71 80636 59056
APR-SEP 81048.8 88 90308.6 98 68936.1 75 92354 68976
JAN-JUL 86316.9 85 94904.2 94 74777.8 74 101178 77510 6047.87 65
JAN-SEP 98195.9 87 108753.6 96 86612.4 77 112896 87430 6047.87 65
OCT-SEP 111442.4 87 121999.4 95 99858.8 78 128295
DESCHUTES - AT MOODY NR BIGGS APR-AUG 1610.0 98 1683.8 103 1550.1 95 1637 1512
APR-JUL 1336.5 98 1407.7 103 1279.3 94 1365 1245
APR-SEP 1875.4 99 1950.5 103 1813.1 95 1902 1773
JAN-JUL 2531.5 98 2622.9 101 2467.6 95 2590 2479 593.36 91
JAN-SEP 3069.3 98 3166.1 101 3001.5 96 3127 3008 593.36 91
OCT-SEP 4020.3 98 4117.1 100 3952.6 96 4118
COLUMBIA - THE DALLES DAM APR-AUG 76859.0 86 86150.0 97 64330.8 72 89196 65535
APR-JUL 69714.8 85 78506.4 96 57815.1 71 81933 59555
APR-SEP 81616.4 87 90975.8 97 69486.3 74 94166 69948
JAN-JUL 87271.0 84 95965.7 93 75679.1 73 103714 78845 6418.40 65
JAN-SEP 99450.6 86 110113.4 95 87810.8 76 115946 89238 6418.40 65
OCT-SEP 113525.6 86 124188.6 94 101885.8 77 132314
COLUMBIA - BONNEVILLE DAM APR-AUG 77906.1 86 87348.2 97 65323.7 72 90174 65814
APR-JUL 70761.6 86 79582.4 96 58663.6 71 82678 59803
APR-SEP 82726.2 87 92310.1 97 70528.9 74 95202 70368
JAN-JUL 88970.7 85 97928.8 93 77235.2 73 105246 81033 6738.58 66
JAN-SEP 101352.5 86 112321.9 95 89587.7 76 117770 91598 6738.58 66
OCT-SEP 116198.3 86 127167.3 95 104433.4 78 134527
---------------------Forecast --------------------- ----------Runoff-----------
River Basin Period Probable % Maximum % Minimum % Average PrevYR CurYR %
MCKENZIE - NEAR VIDA APR-AUG 1004.2 92 1336.7 122 819.2 75 1091 1058
APR-JUL 888.2 91 1208.6 124 720.3 74 978 896
APR-SEP 1106.7 93 1448.4 121 918.6 77 1195 1214
JAN-JUL 1877.7 94 2229.5 111 1705.0 85 2001 2094 542.59 97
JAN-SEP 2090.5 94 2467.2 111 1897.4 86 2219 2412 542.59 97
OCT-SEP 2884.4 98 3261.1 111 2691.3 91 2951
NORTH SANTIAM - AT MEHAMA APR-AUG 690.0 86 941.3 117 530.8 66 802 722
APR-JUL 644.6 86 884.7 117 487.8 65 753 679
APR-SEP 740.8 87 992.6 116 567.6 66 855 762
JAN-JUL 1422.9 84 1811.2 106 1261.2 74 1703 1856 346.73 65
JAN-SEP 1534.3 85 1916.6 106 1341.5 74 1805 1939 346.73 65
OCT-SEP 2300.2 91 2682.6 106 2107.5 84 2522
SOUTH SANTIAM - AT WATERLOO APR-AUG 513.9 90 798.1 140 317.8 56 571 518
APR-JUL 493.4 88 768.9 138 305.1 55 558 506
APR-SEP 527.3 89 823.0 139 332.4 56 590 524
JAN-JUL 1255.3 86 1617.7 111 1054.0 72 1462 1609 336.85 66
JAN-SEP 1294.8 87 1660.9 111 1090.2 73 1494 1627 336.85 66
OCT-SEP 1973.0 92 2339.0 109 1768.3 82 2146
WILLAMETTE - AT SALEM APR-AUG 4153.2 92 5948.5 131 2857.5 63 4539 4216
APR-JUL 3966.7 92 5701.0 132 2712.2 63 4324 4013
APR-SEP 4348.2 91 6162.4 130 2995.0 63 4754 4397
JAN-JUL 10379.9 91 12689.9 111 9048.1 79 11461 13126 3238.96 79
JAN-SEP 10722.6 90 13171.4 111 9405.0 79 11890 13511 3238.96 79
OCT-SEP 15733.1 96 18182.0 111 14415.6 88 16315
CLACKAMAS - AT ESTACADA APR-AUG 573.1 85 784.1 116 451.1 67 677 622
APR-JUL 521.9 84 724.5 116 406.9 65 624 574
APR-SEP 627.1 86 838.9 114 490.5 67 733 668
JAN-JUL 1160.7 87 1436.2 107 1031.8 77 1341 1413 256.20 65
JAN-SEP 1259.3 87 1548.3 107 1119.0 77 1450 1507 256.20 65
OCT-SEP 1775.0 90 2064.0 105 1634.6 83 1975
LEWIS - MERWIN DAM APR-AUG 917.7 95 1248.4 129 692.0 71 969 940
APR-JUL 852.1 97 1186.3 135 649.4 74 881 877
APR-SEP 993.3 92 1341.7 124 733.0 68 1082 995
JAN-JUL 1928.8 89 2395.9 111 1678.4 78 2162 2261 395.55 53
JAN-SEP 2028.2 86 2492.3 105 1768.8 75 2363 2379 395.55 53
OCT-SEP 3030.5 89 3494.6 102 2771.1 81 3417
---------------------Forecast --------------------- ----------Runoff-----------
River Basin Period Probable % Maximum % Minimum % Average PrevYR CurYR %
COWLITZ - MAYFIELD RESERVOIR APR-AUG 1684.5 95 2245.0 127 1378.7 78 1765 1168
APR-JUL 1571.8 95 2123.4 129 1289.2 78 1648 1071
APR-SEP 1772.9 95 2418.6 130 1456.4 78 1864 1252
JAN-JUL 2807.8 88 3564.0 111 2555.9 80 3204 2489 451.04 50
JAN-SEP 3005.3 88 3778.4 110 2711.3 79 3420 2670 451.04 50
OCT-SEP 3958.4 86 4731.4 102 3664.3 79 4624
COWLITZ - AT CASTLE ROCK APR-AUG 2234.9 94 3040.0 128 1788.4 76 2366 1657
APR-JUL 2093.1 95 2882.8 130 1673.9 76 2213 1545
APR-SEP 2339.0 93 3249.5 130 1901.9 76 2504 1748
JAN-JUL 3973.0 86 5143.9 111 3545.9 76 4638 3925 696.52 50
JAN-SEP 4231.5 86 5422.6 110 3789.4 77 4929 4128 696.52 50
OCT-SEP 5765.7 86 6956.8 103 5323.6 79 6739
ROGUE - AT RAYGOLD APR-AUG 889.7 117 1151.0 152 705.9 93 759 694
APR-JUL 803.9 117 1053.1 153 630.0 92 687 622
APR-SEP 970.2 117 1237.7 149 773.9 93 831 763
JAN-JUL 1772.2 123 2127.3 148 1543.7 107 1442 1541 489.20 119
JAN-SEP 1945.0 123 2311.9 146 1689.7 107 1586 1682 489.20 119
OCT-SEP 2544.5 125 2911.4 143 2289.1 113 2032
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