Northwest River Forecast Center
Water Supply Seasonal Forecasts
Ensemble Date: 2024-08-03 Issued Date: 2024-08-03
Water Year 2024
---------------------Forecast --------------------- ----------Runoff-----------
River Basin Period Probable % Maximum % Minimum % Average PrevYR CurYR %
SILVIES - NEAR BURNS APR-AUG 74.8 106 74.8 106 74.8 106 71 183 74.92 107
APR-JUL 74.6 107 74.6 107 74.6 107 70 182 74.89
APR-SEP 74.9 105 75.3 105 74.8 105 71 184 74.92 107
JAN-JUL 125.5 116 125.5 116 125.5 116 108 198 125.48
JAN-SEP 125.8 114 126.1 115 125.7 114 110 201 125.51 116
OCT-SEP 132.4 114 132.8 115 132.3 114 116
DONNER UND BLITZEN - NR FRENCHGLEN APR-AUG 69.4 115 69.5 115 69.4 115 60 83 66.90 116
APR-JUL 66.5 116 66.5 116 66.5 116 57 80 66.57
APR-SEP 71.8 115 72.1 115 71.8 115 63 86 66.90 116
JAN-JUL 90.0 121 90.0 121 90.0 121 74 92 90.06
JAN-SEP 95.3 120 95.7 121 95.3 120 79 97 90.39 121
OCT-SEP 103.5 118 103.8 118 103.5 118 88
DUNGENESS - NEAR SEQUIM APR-AUG 79.0 58 79.4 59 78.9 58 136 101 71.93 59
APR-JUL 70.9 59 70.9 59 70.9 59 121 94 71.00
APR-SEP 85.0 59 87.5 60 84.7 58 145 108 71.93 59
JAN-JUL 134.5 69 134.5 69 134.5 69 195 137 134.67
JAN-SEP 148.6 68 151.1 69 148.2 68 219 151 135.60 69
OCT-SEP 196.4 68 198.9 69 196.1 68 287
SKAGIT - NEAR CONCRETE APR-AUG 3820.3 69 3872.5 70 3789.8 68 5549 4378 3426.62 68
APR-JUL 3372.5 68 3372.5 68 3372.5 68 4959 4014 3376.13
APR-SEP 4135.9 69 4358.8 73 4062.8 68 5955 4616 3426.62 68
JAN-JUL 5677.6 77 5677.6 77 5677.6 77 7334 5395 5682.90
JAN-SEP 6441.0 77 6663.9 80 6367.9 76 8330 5997 5733.39 77
OCT-SEP 8461.1 77 8684.0 79 8388.0 76 10972
COLUMBIA - MICA DAM APR-AUG 8500.2 76 8652.8 77 8415.8 75 11166 9542 7072.77 76
APR-JUL 6838.1 75 6838.1 75 6838.1 75 9064 7750 6837.54
APR-SEP 9341.8 76 9645.3 78 9112.0 74 12296 10467 7072.77 76
JAN-JUL 7435.4 75 7435.4 75 7435.4 75 9850 8372 7441.69
JAN-SEP 9939.0 76 10242.6 78 9709.3 74 13082 11089 7676.92 76
OCT-SEP 10972.7 76 11276.2 78 10743.0 74 14472
COLUMBIA - REVELSTOKE DAM APR-AUG 12105.5 77 12329.7 78 12011.2 76 15746 13147 10260.61 77
APR-JUL 9963.4 76 9963.4 76 9963.4 76 13046 10899 9966.16
APR-SEP 13254.1 77 13632.5 79 13007.4 75 17242 14324 10260.61 77
JAN-JUL 10946.1 78 10946.1 78 10946.1 78 14115 11757 10951.34
JAN-SEP 14236.8 78 14615.1 80 13990.1 76 18311 15182 11245.79 78
OCT-SEP 15848.8 78 16227.1 80 15602.1 77 20340
---------------------Forecast --------------------- ----------Runoff-----------
River Basin Period Probable % Maximum % Minimum % Average PrevYR CurYR %
COLUMBIA - ARROW LAKES (HUGH KEENLEYSIDE DAM)APR-AUG 16860.2 76 17127.2 77 16759.7 76 22135 18495 14464.55 75
APR-JUL 14225.6 76 14225.6 76 14225.6 76 18779 15681 14203.67
APR-SEP 18405.7 77 18918.4 79 18065.1 75 24059 20023 14464.55 75
JAN-JUL 16343.9 79 16343.9 79 16343.9 79 20698 17048 16329.97
JAN-SEP 20523.9 79 21036.6 81 20183.4 78 25978 21390 16590.85 79
OCT-SEP 23301.3 80 23814.0 82 22960.8 79 29084
KOOTENAI - LIBBY DAM APR-AUG 4768.6 78 4780.2 79 4764.8 78 6080 4323 4398.56 78
APR-JUL 4351.0 78 4351.0 78 4351.0 78 5570 4025 4352.14
APR-SEP 5070.8 79 5214.1 81 5030.3 78 6429 4554 4398.56 78
JAN-JUL 4938.5 79 4938.5 79 4938.5 79 6227 4449 4940.08
JAN-SEP 5658.4 80 5801.7 82 5617.9 79 7086 4978 4986.50 79
OCT-SEP 6362.1 80 6505.4 82 6321.6 79 7981
KOOTENAI - AT LEONIA APR-AUG 5689.0 77 5701.3 77 5684.9 77 7409 5300 5279.72 76
APR-JUL 5225.4 76 5225.4 76 5225.4 76 6858 4963 5228.04
APR-SEP 6030.5 77 6176.8 79 5990.9 77 7803 5562 5279.72 76
JAN-JUL 6186.5 79 6186.5 79 6186.5 79 7877 5547 6188.92
JAN-SEP 6991.6 79 7137.9 81 6952.0 79 8822 6146 6240.60 79
OCT-SEP 7911.4 80 8057.7 81 7871.8 79 9923
MOYIE - AT EASTPORT APR-AUG 271.5 70 272.0 70 271.4 70 390 256 267.25 70
APR-JUL 266.4 70 266.4 70 266.4 70 382 253 266.74
APR-SEP 276.1 70 277.0 70 275.7 70 395 259 267.25 70
JAN-JUL 322.0 75 322.0 75 322.0 75 431 267 322.09
JAN-SEP 331.7 75 332.5 75 331.2 75 443 273 322.60 75
OCT-SEP 354.4 74 355.3 74 354.0 74 479
KOOTENAI - AT BONNERS FERRY APR-AUG 6177.4 77 6190.3 77 6173.0 77 8061 5722 5757.09 76
APR-JUL 5699.5 76 5699.5 76 5699.5 76 7495 5369 5702.63
APR-SEP 6525.9 77 6660.9 79 6488.4 77 8463 5999 5757.09 76
JAN-JUL 6720.6 78 6720.6 78 6720.6 78 8596 5983 6723.14
JAN-SEP 7546.9 79 7682.0 80 7509.5 79 9565 6614 6777.60 78
OCT-SEP 8512.0 79 8647.1 81 8474.7 79 10724
DUNCAN - DUNCAN DAM APR-AUG 1603.5 79 1629.2 80 1590.3 78 2040 1679 1364.08 78
APR-JUL 1329.0 78 1329.0 78 1329.0 78 1713 1417 1329.70
APR-SEP 1749.4 79 1776.6 80 1714.8 77 2224 1830 1364.08 78
JAN-JUL 1473.7 80 1473.7 80 1473.7 80 1849 1532 1473.81
JAN-SEP 1894.1 80 1921.3 81 1859.5 79 2361 1944 1508.19 80
OCT-SEP 2127.3 81 2154.4 82 2092.7 80 2620
---------------------Forecast --------------------- ----------Runoff-----------
River Basin Period Probable % Maximum % Minimum % Average PrevYR CurYR %
KOOTENAI - KOOTENAY L AT QUEENS BAY APR-AUG 11280.0 75 11310.6 75 11266.2 75 15052 11265 10392.71 74
APR-JUL 10258.4 74 10258.4 74 10258.4 74 13836 10464 10270.17
APR-SEP 11932.3 75 12137.2 77 11895.8 75 15842 11815 10392.71 74
JAN-JUL 12266.3 78 12266.3 78 12266.3 78 15754 11498 12270.15
JAN-SEP 13940.2 78 14145.1 80 13903.7 78 17761 12849 12392.69 78
OCT-SEP 15755.0 79 15959.9 80 15718.4 79 19885
SLOCAN - NEAR CRESCENT VALLEY APR-AUG 1293.5 70 1329.4 72 1290.7 70 1850 1499 1207.78 70
APR-JUL 1194.3 70 1194.3 70 1194.3 70 1708 1428 1195.16
APR-SEP 1373.6 71 1457.2 75 1342.0 69 1933 1549 1207.78 70
JAN-JUL 1415.3 75 1415.3 75 1415.3 75 1892 1524 1415.80
JAN-SEP 1594.5 75 1678.2 79 1562.9 74 2116 1645 1428.42 75
OCT-SEP 1787.5 76 1871.2 79 1755.9 74 2364
COLUMBIA - AT BIRCHBANK APR-AUG 29918.2 75 30266.5 76 29795.5 75 39736 31714 26683.81 75
APR-JUL 26175.9 75 26175.9 75 26175.9 75 34960 28018 26167.84
APR-SEP 32178.7 76 33075.2 78 31807.5 75 42578 33872 26683.81 75
JAN-JUL 30742.1 78 30742.1 78 30742.1 78 39168 30660 30732.50
JAN-SEP 36744.9 79 37641.5 80 36373.7 78 46786 36514 31248.47 79
OCT-SEP 41393.9 79 42290.5 81 41022.7 78 52397
BLACKFOOT - NEAR BONNER APR-AUG 370.8 43 371.4 43 370.7 43 855 759 348.71 43
APR-JUL 345.7 43 345.7 43 345.7 43 811 719 346.06
APR-SEP 394.2 44 396.8 45 393.4 44 891 794 348.71 43
JAN-JUL 440.8 47 440.8 47 440.8 47 937 809 441.02
JAN-SEP 489.3 48 491.9 48 488.5 48 1017 884 443.67 47
OCT-SEP 593.1 53 595.7 53 592.4 53 1126
CLARK FORK - ABOVE BLACKFOOT APR-AUG 390.7 61 394.7 62 389.4 61 637 781 367.95 61
APR-JUL 364.8 61 364.8 61 364.8 61 594 744 365.36
APR-SEP 422.4 62 434.9 64 417.5 61 680 819 367.95 61
JAN-JUL 528.9 70 528.9 70 528.9 70 756 864 529.34
JAN-SEP 586.5 70 599.0 71 581.6 69 842 939 531.93 70
OCT-SEP 750.4 75 762.8 77 745.5 75 996
CLARK FORK - ABOVE MISSOULA APR-AUG 761.5 51 766.2 51 760.1 51 1492 1539 716.65 51
APR-JUL 710.5 51 710.5 51 710.5 51 1405 1463 711.41
APR-SEP 817.0 52 832.0 53 811.1 52 1571 1613 716.65 51
JAN-JUL 969.7 57 969.7 57 969.7 57 1693 1673 970.35
JAN-SEP 1076.2 58 1091.2 59 1070.3 58 1859 1823 975.59 57
OCT-SEP 1343.8 63 1358.9 64 1338.0 63 2122
---------------------Forecast --------------------- ----------Runoff-----------
River Basin Period Probable % Maximum % Minimum % Average PrevYR CurYR %
BITTERROOT - NEAR DARBY APR-AUG 357.7 72 360.4 73 356.6 72 497 415 336.62 72
APR-JUL 334.4 72 334.4 72 334.4 72 465 383 334.53
APR-SEP 377.7 73 381.5 74 375.7 72 519 436 336.62 72
JAN-JUL 378.1 72 378.1 72 378.1 72 521 416 378.16
JAN-SEP 421.4 73 425.2 74 419.4 73 575 469 380.25 72
OCT-SEP 464.9 74 468.6 75 462.9 74 624
BITTERROOT - NEAR MISSOULA APR-AUG 793.9 64 796.4 64 792.9 64 1241 1030 762.74 64
APR-JUL 759.1 64 759.1 64 759.1 64 1191 988 759.69
APR-SEP 834.0 65 840.9 65 831.7 65 1289 1071 762.74 64
JAN-JUL 921.2 67 921.2 67 921.2 67 1385 1106 921.51
JAN-SEP 996.0 67 1003.0 68 993.7 67 1484 1189 924.56 66
OCT-SEP 1157.9 69 1164.8 70 1155.5 69 1669
CLARK FORK - BELOW MISSOULA APR-AUG 1541.8 56 1549.3 56 1539.6 56 2767 2616 1465.75 55
APR-JUL 1455.9 55 1455.9 55 1455.9 55 2630 2488 1457.40
APR-SEP 1637.8 57 1656.3 57 1629.7 56 2893 2746 1465.75 55
JAN-JUL 1873.8 60 1873.8 60 1873.8 60 3121 2834 1874.82
JAN-SEP 2055.7 61 2074.2 61 2047.6 60 3384 3092 1883.17 60
OCT-SEP 2488.0 65 2506.5 65 2479.8 65 3838
CLARK FORK - AT ST REGIS APR-AUG 2060.2 57 2068.0 57 2057.8 57 3610 3171 1953.90 57
APR-JUL 1939.8 57 1939.8 57 1939.8 57 3429 3011 1941.90
APR-SEP 2186.1 58 2205.8 58 2177.6 58 3771 3328 1953.90 57
JAN-JUL 2485.0 60 2485.0 60 2485.0 60 4109 3439 2486.25
JAN-SEP 2731.3 61 2751.0 62 2722.8 61 4451 3757 2498.25 60
OCT-SEP 3268.7 65 3288.3 65 3260.1 65 5042
NF FLATHEAD - NEAR COLUMBIA FALLS APR-AUG 1297.7 77 1297.7 77 1297.7 77 1690 952 1241.14 77
APR-JUL 1232.9 77 1232.9 77 1232.9 77 1600 906 1233.62
APR-SEP 1346.1 77 1353.6 77 1346.1 77 1750 1006 1241.14 77
JAN-JUL 1430.3 81 1430.3 81 1430.3 81 1771 993 1430.93
JAN-SEP 1543.5 80 1551.0 81 1543.5 80 1921 1093 1438.45 81
OCT-SEP 1753.4 82 1760.9 83 1753.4 82 2133
MF FLATHEAD - NEAR WEST GLACIER APR-AUG 1230.3 75 1232.9 75 1230.3 75 1651 1141 1177.47 74
APR-JUL 1169.7 74 1169.7 74 1169.7 74 1576 1095 1170.34
APR-SEP 1269.0 75 1289.7 76 1269.0 75 1697 1192 1177.47 74
JAN-JUL 1356.2 78 1356.2 78 1356.2 78 1744 1160 1356.67
JAN-SEP 1455.5 78 1476.2 79 1455.5 78 1865 1257 1363.80 78
OCT-SEP 1641.0 79 1661.6 80 1641.0 79 2065
---------------------Forecast --------------------- ----------Runoff-----------
River Basin Period Probable % Maximum % Minimum % Average PrevYR CurYR %
SF FLATHEAD - HUNGRY HORSE DAM APR-AUG 1377.8 67 1380.7 68 1377.7 67 2043 1570 1340.15 67
APR-JUL 1333.7 67 1333.7 67 1333.7 67 1981 1526 1334.73
APR-SEP 1414.1 68 1426.1 68 1412.1 68 2088 1609 1340.15 67
JAN-JUL 1576.4 70 1576.4 70 1576.4 70 2236 1668 1577.12
JAN-SEP 1656.7 71 1668.7 71 1654.8 71 2343 1751 1582.54 71
OCT-SEP 1849.3 72 1861.3 73 1847.3 72 2567
FLATHEAD - AT COLUMBIA FALLS APR-AUG 3928.3 72 3936.0 72 3928.2 72 5473 3734 3775.00 72
APR-JUL 3753.6 72 3753.6 72 3753.6 72 5237 3600 3755.84
APR-SEP 4059.4 72 4097.1 73 4057.1 72 5634 3877 3775.00 72
JAN-JUL 4361.6 75 4361.6 75 4361.6 75 5847 3900 4363.38
JAN-SEP 4667.4 75 4705.1 75 4665.1 75 6244 4177 4382.54 75
OCT-SEP 5251.9 76 5289.6 77 5249.7 76 6906
FLATHEAD - SELI’Š KSANKA QLISPE’ DAMAPR-AUG 4477.1 70 4485.9 70 4476.5 70 6396 4243 4325.13 70
APR-JUL 4291.9 70 4291.9 70 4291.9 70 6137 4098 4297.67
APR-SEP 4615.9 70 4658.2 71 4610.9 70 6577 4384 4325.13 70
JAN-JUL 5115.0 73 5115.0 73 5115.0 73 7010 4574 5115.03
JAN-SEP 5439.0 73 5481.3 74 5434.0 73 7450 4859 5142.49 73
OCT-SEP 6113.6 74 6155.9 74 6108.6 74 8277
CLARK FORK - NEAR PLAINS APR-AUG 6668.3 65 6685.9 65 6665.0 65 10215 7534 6372.27 65
APR-JUL 6320.7 65 6320.7 65 6320.7 65 9749 7215 6328.71
APR-SEP 6956.1 66 7014.8 66 6941.1 66 10574 7840 6372.27 65
JAN-JUL 7730.9 68 7730.9 68 7730.9 68 11342 8149 7732.30
JAN-SEP 8366.3 69 8425.0 69 8351.2 69 12168 8774 7775.86 68
OCT-SEP 9634.4 71 9693.0 71 9619.3 71 13632
CLARK FORK - CABINET GORGE DAM APR-AUG 6960.5 62 6980.1 62 6956.8 62 11280 8065 6588.12 61
APR-JUL 6543.4 61 6543.4 61 6543.4 61 10767 7762 6551.92
APR-SEP 7321.9 63 7385.2 63 7304.4 63 11639 8353 6588.12 61
JAN-JUL 7995.0 63 7995.0 63 7995.0 63 12591 8705 7994.76
JAN-SEP 8773.4 65 8836.7 66 8756.0 65 13463 9295 8030.96 63
OCT-SEP 10014.0 67 10077.4 67 9996.6 67 14991
PRIEST - NEAR PRIEST RIVER APR-AUG 599.1 73 603.7 73 598.5 73 823 634 578.37 72
APR-JUL 574.9 72 574.9 72 574.9 72 800 616 576.26
APR-SEP 625.0 74 632.9 75 620.8 74 843 646 578.37 72
JAN-JUL 891.4 87 891.4 87 891.4 87 1026 703 891.40
JAN-SEP 941.4 88 949.4 89 937.3 88 1069 733 893.51 87
OCT-SEP 1107.9 91 1115.9 92 1103.8 91 1217
---------------------Forecast --------------------- ----------Runoff-----------
River Basin Period Probable % Maximum % Minimum % Average PrevYR CurYR %
PEND OREILLE - ALBENI FALLS DAM APR-AUG 8483.1 66 8519.0 66 8475.9 66 12919 9785 8108.95 65
APR-JUL 8045.2 65 8045.2 65 8045.2 65 12369 9394 8056.35
APR-SEP 8845.2 66 8928.6 67 8815.2 66 13347 10175 8108.95 65
JAN-JUL 10516.2 70 10516.2 70 10516.2 70 14922 10774 10516.58
JAN-SEP 11316.2 71 11399.6 72 11286.2 71 15900 11555 10569.18 70
OCT-SEP 13164.1 73 13247.5 74 13134.1 73 17911
COLUMBIA - AT INTL BOUNDARY APR-AUG 39139.1 73 39522.0 74 39031.7 73 53664 41997 35466.25 72
APR-JUL 34881.2 72 34881.2 72 34881.2 72 48307 37905 34887.30
APR-SEP 41803.1 73 42756.3 75 41435.4 73 56951 44542 35466.25 72
JAN-JUL 42333.6 77 42333.6 77 42333.6 77 55223 42035 42326.25
JAN-SEP 49255.5 77 50208.7 79 48887.9 77 63866 48672 42905.20 77
OCT-SEP 55927.6 78 56880.8 79 55560.0 77 71709
KETTLE - AT LAURIER APR-AUG 1404.8 73 1409.4 73 1404.0 73 1928 1747 1390.80 74
APR-JUL 1385.5 73 1385.5 73 1385.5 73 1886 1726 1387.60
APR-SEP 1419.1 73 1436.8 74 1413.8 72 1954 1762 1390.80 74
JAN-JUL 1732.2 84 1732.2 84 1732.2 84 2058 1790 1732.47
JAN-SEP 1765.7 83 1783.5 84 1760.4 83 2125 1827 1735.67 84
OCT-SEP 1843.9 82 1861.7 83 1838.6 82 2247
NF COEUR D ALENE - AT ENAVILLE APR-AUG 376.9 52 377.1 52 376.9 52 727 572 364.35 51
APR-JUL 361.2 51 361.2 51 361.2 51 708 558 362.68
APR-SEP 390.5 53 390.9 53 390.3 53 743 584 364.35 51
JAN-JUL 787.4 70 787.4 70 787.4 70 1129 680 787.77
JAN-SEP 816.7 70 817.1 70 816.6 70 1164 706 789.44 70
OCT-SEP 926.6 70 927.0 70 926.5 70 1322
ST JOE - AT CALDER APR-AUG 687.2 62 687.7 62 687.0 62 1112 913 665.72 62
APR-JUL 661.3 61 661.3 61 661.3 61 1076 886 662.56
APR-SEP 707.6 62 709.6 62 706.8 62 1138 934 665.72 62
JAN-JUL 964.7 68 964.7 68 964.7 68 1415 998 964.98
JAN-SEP 1011.0 68 1013.0 69 1010.2 68 1477 1046 968.14 68
OCT-SEP 1107.4 68 1109.5 68 1106.7 68 1636
COEUR D ALENE - COEUR D ALENE LAKE APR-AUG 1314.0 53 1314.6 53 1313.8 53 2470 1980 1290.18 53
APR-JUL 1282.5 53 1282.5 53 1282.5 53 2428 1957 1286.95
APR-SEP 1345.1 54 1347.9 54 1344.3 54 2504 2003 1290.18 53
JAN-JUL 2556.1 66 2556.1 66 2556.1 66 3868 2506 2557.20
JAN-SEP 2618.7 66 2621.5 66 2617.9 66 3945 2552 2560.43 66
OCT-SEP 2962.7 66 2965.6 66 2961.9 66 4461
---------------------Forecast --------------------- ----------Runoff-----------
River Basin Period Probable % Maximum % Minimum % Average PrevYR CurYR %
SPOKANE - AT SPOKANE APR-AUG 1379.9 54 1380.8 54 1379.7 54 2540 1996 1343.16 54
APR-JUL 1334.2 54 1334.2 54 1334.2 54 2475 1956 1338.49
APR-SEP 1423.9 55 1426.8 55 1422.8 55 2587 2025 1343.16 54
JAN-JUL 2599.7 66 2599.7 66 2599.7 66 3926 2574 2601.01
JAN-SEP 2689.4 67 2692.3 67 2688.4 67 4038 2643 2605.68 66
OCT-SEP 3069.1 67 3072.1 67 3068.1 67 4584
SPOKANE - AT LONGLAKE APR-AUG 1548.0 55 1548.9 55 1547.8 55 2817 2203 1477.52 54
APR-JUL 1464.9 54 1464.9 54 1464.9 54 2714 2127 1469.56
APR-SEP 1627.8 56 1630.7 56 1627.0 56 2901 2263 1477.52 54
JAN-JUL 2910.5 66 2910.5 66 2910.5 66 4433 2919 2912.11
JAN-SEP 3073.5 67 3076.3 67 3072.6 67 4619 3055 2920.07 66
OCT-SEP 3556.0 67 3558.9 67 3555.1 67 5295
COLUMBIA - GRAND COULEE DAM APR-AUG 42004.1 72 42391.0 73 41897.1 72 58186 46237 38210.21 71
APR-JUL 37632.6 71 37632.6 71 37632.6 71 52774 42139 37637.22
APR-SEP 44761.8 73 45742.1 74 44394.3 72 61483 48819 38210.21 71
JAN-JUL 47084.2 76 47084.2 76 47084.2 76 61749 47164 47076.77
JAN-SEP 54213.5 77 55193.8 78 53845.9 76 70457 53844 47649.76 76
OCT-SEP 61298.4 78 62278.6 79 60930.7 77 78842
SIMILKAMEEN - NEAR HEDLEY APR-AUG 565.8 57 568.2 58 564.5 57 984 581 558.41 58
APR-JUL 556.4 58 556.4 58 556.4 58 956 569 556.83
APR-SEP 575.3 57 584.5 58 570.0 57 1004 591 558.41 58
JAN-JUL 667.3 62 667.3 62 667.3 62 1078 629 667.53
JAN-SEP 686.2 61 695.4 62 680.9 60 1126 651 669.11 62
OCT-SEP 767.1 61 776.3 62 761.8 61 1257
SIMILKAMEEN - NEAR NIGHTHAWK APR-AUG 774.7 58 777.1 58 773.6 58 1335 857 757.28 59
APR-JUL 753.4 59 753.4 59 753.4 59 1286 839 754.00
APR-SEP 793.5 58 802.5 59 788.2 58 1366 876 757.28 59
JAN-JUL 896.0 62 896.0 62 896.0 62 1443 911 896.31
JAN-SEP 936.1 61 945.1 62 930.8 61 1522 948 899.59 62
OCT-SEP 1049.0 62 1058.0 63 1043.7 62 1692
OKANOGAN - NEAR TONASKET APR-AUG 892.6 54 895.4 54 891.4 54 1656 1127 860.33 55
APR-JUL 855.3 55 855.3 55 855.3 55 1566 1092 856.12
APR-SEP 939.3 55 961.2 56 933.9 54 1720 1164 860.33 55
JAN-JUL 1067.9 58 1067.9 58 1067.9 58 1832 1268 1068.41
JAN-SEP 1151.9 58 1173.8 59 1146.5 58 1986 1340 1072.62 58
OCT-SEP 1340.2 60 1362.1 61 1334.7 60 2238
---------------------Forecast --------------------- ----------Runoff-----------
River Basin Period Probable % Maximum % Minimum % Average PrevYR CurYR %
METHOW - NEAR PATEROS APR-AUG 662.4 70 662.8 70 662.3 70 942 923 643.03 71
APR-JUL 639.7 71 639.7 71 639.7 71 904 903 640.51
APR-SEP 682.8 71 683.8 71 682.4 71 965 942 643.03 71
JAN-JUL 793.0 79 793.0 79 793.0 79 1001 964 793.27
JAN-SEP 836.0 79 837.0 79 835.6 79 1063 1003 795.79 79
OCT-SEP 938.1 81 939.1 81 937.7 81 1162
STEHEKIN - AT STEHEKIN APR-AUG 526.1 68 527.1 68 525.8 68 778 673 496.90 69
APR-JUL 490.9 69 490.9 69 490.9 69 710 633 491.38
APR-SEP 545.1 67 549.2 67 543.7 67 814 696 496.90 69
JAN-JUL 615.7 76 615.7 76 615.7 76 809 674 615.95
JAN-SEP 670.0 73 674.0 74 668.5 73 913 737 621.47 76
OCT-SEP 794.9 76 798.9 76 793.5 76 1046
CHELAN - LAKE CHELAN DAM APR-AUG 711.5 65 712.4 65 711.2 65 1102 1023 683.41 66
APR-JUL 675.0 66 675.0 66 675.0 66 1029 983 675.89
APR-SEP 730.5 64 738.4 65 729.1 64 1139 1040 683.41 66
JAN-JUL 900.8 74 900.8 74 900.8 74 1217 1071 901.20
JAN-SEP 956.3 72 964.1 73 954.9 72 1326 1128 908.72 74
OCT-SEP 1128.0 74 1135.8 75 1126.5 74 1518
WENATCHEE - AT PESHASTIN APR-AUG 955.6 66 955.6 66 955.6 66 1454 1176 918.54 66
APR-JUL 912.3 66 912.3 66 912.3 66 1379 1142 913.62
APR-SEP 987.7 66 992.0 66 987.6 66 1496 1200 918.54 66
JAN-JUL 1238.5 72 1238.5 72 1238.5 72 1726 1290 1239.12
JAN-SEP 1313.9 71 1318.2 72 1313.8 71 1842 1347 1244.04 72
OCT-SEP 1560.9 72 1565.3 72 1560.9 72 2175
COLUMBIA - BLO ROCK ISLAND DAM APR-AUG 45140.5 71 45529.9 71 45033.1 70 64028 50314 41184.07 70
APR-JUL 40614.8 70 40614.8 70 40614.8 70 58256 46114 40634.39
APR-SEP 48014.8 71 49013.8 73 47664.6 71 67524 52893 41184.07 70
JAN-JUL 51167.2 75 51167.2 75 51167.2 75 68440 51899 51148.17
JAN-SEP 58567.3 75 59566.2 77 58217.1 75 77708 58677 51697.85 75
OCT-SEP 66401.0 76 67399.9 77 66050.8 76 87167
COLUMBIA - BLO PRIEST RAPIDS DAM APR-AUG 44945.9 70 45334.4 70 44838.6 69 64656 50898 40982.62 69
APR-JUL 40415.2 69 40415.2 69 40415.2 69 58905 46707 40433.01
APR-SEP 47823.9 70 48819.9 72 47474.7 70 68162 53441 40982.62 69
JAN-JUL 51042.6 74 51042.6 74 51042.6 74 69359 52403 51020.62
JAN-SEP 58451.2 74 59447.2 76 58102.1 74 78616 59137 51570.23 74
OCT-SEP 66488.6 75 67484.6 77 66139.4 75 88197
---------------------Forecast --------------------- ----------Runoff-----------
River Basin Period Probable % Maximum % Minimum % Average PrevYR CurYR %
YAKIMA - NEAR MARTIN APR-AUG 100.1 80 100.2 81 100.0 80 124 108 97.17 82
APR-JUL 96.3 82 96.3 82 96.3 82 118 105 96.47
APR-SEP 103.3 80 107.5 83 102.6 79 129 116 97.17 82
JAN-JUL 145.2 82 145.2 82 145.2 82 176 132 145.28
JAN-SEP 152.2 81 156.4 83 151.5 81 188 144 145.98 82
OCT-SEP 194.8 78 199.1 80 194.1 78 249
KACHESS - NEAR EASTON APR-AUG 75.9 71 76.0 71 75.9 71 108 86 74.62 72
APR-JUL 74.3 72 74.3 72 74.3 72 104 80 74.40
APR-SEP 77.5 68 79.5 70 77.3 68 114 93 74.62 72
JAN-JUL 118.5 75 118.5 75 118.5 75 158 104 118.45
JAN-SEP 121.8 72 123.8 74 121.6 72 168 116 118.67 75
OCT-SEP 162.0 74 164.0 75 161.8 74 218
CLE ELUM - NEAR ROSLYN APR-AUG 273.8 67 273.9 67 273.8 67 407 338 269.47 69
APR-JUL 267.0 69 267.0 69 267.0 69 386 316 267.41
APR-SEP 279.3 67 288.0 69 279.2 67 419 347 269.47 69
JAN-JUL 390.8 76 390.8 76 390.8 76 512 379 390.97
JAN-SEP 403.1 74 411.7 76 403.0 74 545 409 393.03 76
OCT-SEP 502.5 75 511.1 76 502.4 75 672
YAKIMA - NEAR HORLICK APR-AUG 620.5 68 620.9 68 620.4 68 916 745 602.22 68
APR-JUL 598.0 68 598.0 68 598.0 68 876 724 599.26
APR-SEP 673.4 70 685.0 71 672.7 70 962 790 602.22 68
JAN-JUL 989.1 75 989.1 75 989.1 75 1311 944 989.45
JAN-SEP 1064.5 76 1076.0 77 1063.8 76 1398 1010 992.41 75
OCT-SEP 1331.1 76 1342.7 77 1330.5 76 1746
BUMPING - BELOW BUMPING DAM APR-AUG 85.0 71 85.1 71 85.0 71 120 96 82.30 71
APR-JUL 81.8 71 81.8 71 81.8 71 115 92 81.88
APR-SEP 87.8 70 88.4 71 87.7 70 125 99 82.30 71
JAN-JUL 123.3 78 123.3 78 123.3 78 158 113 123.42
JAN-SEP 129.3 77 130.0 78 129.2 77 168 119 123.84 78
OCT-SEP 168.5 82 169.1 82 168.4 81 207
TIETON - AT TIETON DAM APR-AUG 160.2 77 161.9 78 158.9 76 209 195 142.41 74
APR-JUL 141.0 74 141.0 74 141.0 74 191 181 140.72
APR-SEP 174.1 77 177.7 79 171.9 76 225 209 142.41 74
JAN-JUL 211.7 78 211.7 78 211.7 78 271 226 211.21
JAN-SEP 244.8 80 248.4 81 242.6 80 305 254 212.90 78
OCT-SEP 308.9 83 312.5 84 306.7 82 372
---------------------Forecast --------------------- ----------Runoff-----------
River Basin Period Probable % Maximum % Minimum % Average PrevYR CurYR %
NACHES - NEAR NACHES APR-AUG 516.6 67 518.4 67 515.3 67 773 704 490.16 66
APR-JUL 486.7 66 486.7 66 486.7 66 737 680 486.94
APR-SEP 538.3 67 544.1 67 535.8 66 807 720 490.16 66
JAN-JUL 742.6 72 742.6 72 742.6 72 1030 834 742.37
JAN-SEP 794.3 72 800.0 73 791.7 72 1100 874 745.59 72
OCT-SEP 964.2 74 969.9 75 961.6 74 1297
YAKIMA - NEAR PARKER APR-AUG 1206.1 67 1208.1 67 1205.3 67 1804 1620 1141.33 66
APR-JUL 1133.7 66 1133.7 66 1133.7 66 1721 1556 1135.74
APR-SEP 1394.7 73 1400.4 74 1392.6 73 1899 1709 1141.33 66
JAN-JUL 1905.9 73 1905.9 73 1905.9 73 2596 2051 1906.29
JAN-SEP 2167.0 78 2172.7 78 2164.8 78 2774 2205 1911.88 73
OCT-SEP 2686.3 79 2692.0 79 2684.2 79 3404
YAKIMA - AT KIONA APR-AUG 588.8 56 589.9 57 587.6 56 1043 952 490.96 51
APR-JUL 476.6 50 476.6 50 476.6 50 952 887 478.83
APR-SEP 665.5 58 667.6 58 664.4 58 1149 1047 490.96 51
JAN-JUL 1223.9 69 1223.9 69 1223.9 69 1785 1433 1224.95
JAN-SEP 1412.8 71 1414.8 71 1411.7 71 1982 1593 1237.08 69
OCT-SEP 1817.1 72 1819.2 72 1816.0 72 2516
SNAKE - JACKSON LAKE AT DAM APR-AUG 651.0 80 651.8 80 650.6 80 816 734 625.04 80
APR-JUL 622.0 81 622.0 81 622.0 81 771 684 622.35
APR-SEP 675.8 80 679.6 80 674.2 79 849 766 625.04 80
JAN-JUL 710.5 82 710.5 82 710.5 82 869 775 710.61
JAN-SEP 764.3 81 768.1 81 762.7 81 947 857 713.30 82
OCT-SEP 845.9 81 849.7 82 844.3 81 1039
GREYS - AB RES NR ALPINE APR-AUG 299.5 86 300.0 86 299.3 86 350 358 280.60 86
APR-JUL 278.0 87 278.0 87 278.0 87 321 330 278.13
APR-SEP 316.2 85 317.8 86 315.6 85 371 380 280.60 86
JAN-JUL 319.6 88 319.6 88 319.6 88 361 360 319.78
JAN-SEP 357.9 87 359.5 87 357.3 87 412 410 322.25 88
OCT-SEP 409.8 89 411.4 89 409.2 89 461
SALT - ABV PALISADES RES NR ETNA APR-AUG 364.8 109 367.3 110 363.8 109 335 422 331.11 108
APR-JUL 327.8 109 327.8 109 327.8 109 301 382 328.04
APR-SEP 408.4 111 413.7 112 405.0 110 368 460 331.11 108
JAN-JUL 414.2 108 414.2 108 414.2 108 383 448 414.45
JAN-SEP 494.9 110 500.2 111 491.4 109 450 526 417.52 108
OCT-SEP 602.6 110 607.9 111 599.1 110 545
---------------------Forecast --------------------- ----------Runoff-----------
River Basin Period Probable % Maximum % Minimum % Average PrevYR CurYR %
SNAKE - NEAR IRWIN APR-AUG 3110.7 93 3118.9 93 3107.2 92 3362 3455 2912.43 93
APR-JUL 2886.9 93 2886.9 93 2886.9 93 3097 3149 2888.63
APR-SEP 3309.1 93 3329.6 93 3298.7 92 3577 3679 2912.43 93
JAN-JUL 3349.6 93 3349.6 93 3349.6 93 3584 3531 3350.72
JAN-SEP 3771.8 93 3792.3 93 3761.4 93 4064 4061 3374.52 93
OCT-SEP 4309.4 93 4329.9 94 4298.9 93 4612
SNAKE - NEAR HEISE APR-AUG 3378.0 94 3386.3 94 3374.4 94 3605 3778 3156.28 94
APR-JUL 3128.1 95 3128.1 95 3128.1 95 3308 3456 3129.11
APR-SEP 3598.7 93 3619.4 94 3588.0 93 3849 4031 3156.28 94
JAN-JUL 3652.0 94 3652.0 94 3652.0 94 3871 3908 3653.33
JAN-SEP 4122.6 93 4143.3 94 4111.8 93 4413 4482 3680.50 94
OCT-SEP 4770.4 94 4791.1 95 4759.6 94 5050
FALL RIVER - NEAR CHESTER APR-AUG 271.4 77 272.6 77 269.7 77 352 353 259.82 78
APR-JUL 258.0 78 258.0 78 258.0 78 329 327 258.23
APR-SEP 288.8 77 294.4 78 285.9 76 377 381 259.82 78
JAN-JUL 346.1 83 346.1 83 346.1 83 416 401 346.34
JAN-SEP 376.9 81 382.6 82 374.0 81 464 455 347.93 83
OCT-SEP 474.5 85 480.1 86 471.6 84 559
HENRYS FORK - AT ST. ANTHONY APR-AUG 575.7 80 581.2 81 570.0 79 720 704 511.44 79
APR-JUL 505.0 79 505.0 79 505.0 79 639 632 505.71
APR-SEP 662.7 83 675.6 85 653.3 82 794 772 511.44 79
JAN-JUL 787.3 85 787.3 85 787.3 85 931 860 788.11
JAN-SEP 945.0 87 958.0 88 935.6 86 1086 999 793.84 84
OCT-SEP 1199.2 88 1212.1 89 1189.8 88 1358
TETON - NEAR ST. ANTHONY APR-AUG 417.9 101 420.4 102 416.6 101 412 441 384.09 103
APR-JUL 380.3 103 380.3 103 380.3 103 368 398 380.59
APR-SEP 458.4 103 463.8 104 455.6 102 447 475 384.09 103
JAN-JUL 452.8 101 452.8 101 452.8 101 448 456 453.01
JAN-SEP 530.8 101 536.2 102 528.1 100 526 533 456.51 101
OCT-SEP 621.1 101 626.5 102 618.4 101 614
HENRYS FORK - AT REXBURG APR-AUG 1190.4 78 1197.0 78 1186.8 77 1536 1416 1092.49 80
APR-JUL 1078.0 81 1078.0 81 1078.0 81 1335 1250 1079.28
APR-SEP 1313.3 77 1326.6 78 1304.7 76 1710 1548 1092.49 80
JAN-JUL 1402.2 81 1402.2 81 1402.2 81 1721 1535 1403.03
JAN-SEP 1637.5 78 1650.8 79 1628.8 78 2096 1833 1416.24 81
OCT-SEP 1999.5 79 2012.7 80 1990.8 79 2527
---------------------Forecast --------------------- ----------Runoff-----------
River Basin Period Probable % Maximum % Minimum % Average PrevYR CurYR %
WILLOW CREEK - NEAR RIRIE APR-AUG 105.6 179 105.9 179 105.4 178 59 98 103.51 177
APR-JUL 103.2 177 103.2 177 103.2 177 58 94 103.26
APR-SEP 108.4 180 108.9 181 107.9 179 60 101 103.51 177
JAN-JUL 115.9 168 115.9 168 115.9 168 69 99 115.96
JAN-SEP 121.1 170 121.6 171 120.6 170 71 106 116.21 168
OCT-SEP 138.4 176 138.9 177 137.9 175 79
SNAKE - NEAR SHELLEY APR-AUG 4150.5 92 4166.4 92 4140.6 92 4520 4697 3857.52 93
APR-JUL 3822.2 93 3822.2 93 3822.2 93 4090 4303 3823.80
APR-SEP 4491.0 92 4522.5 92 4465.3 91 4905 5036 3857.52 93
JAN-JUL 4704.8 97 4704.8 97 4704.8 97 4841 5043 4707.08
JAN-SEP 5373.6 95 5405.1 96 5347.9 95 5656 5777 4740.80 97
OCT-SEP 6361.2 96 6392.7 97 6335.5 96 6605
PORTNEUF - AT TOPAZ APR-AUG 89.0 135 89.4 135 88.8 134 66 110 80.90 138
APR-JUL 79.8 138 79.8 138 79.8 138 58 99 79.92
APR-SEP 99.6 138 100.3 139 98.9 137 72 119 80.90 138
JAN-JUL 113.8 136 113.8 136 113.8 136 83 118 113.89
JAN-SEP 133.6 136 134.3 137 133.0 136 98 138 114.87 136
OCT-SEP 162.7 138 163.4 139 162.1 137 118
SNAKE - AT AMERICAN FALLS DAM APR-AUG 2153.4 85 2171.6 86 2143.0 85 2531 2675 2212.80 87
APR-JUL 2142.1 85 2142.1 85 2142.1 85 2529 2657 2214.20
APR-SEP 2282.8 87 2316.0 88 2253.7 86 2624 2771 2212.80 87
JAN-JUL 3218.3 88 3218.3 88 3218.3 88 3651 3567 3293.05
JAN-SEP 3359.0 90 3392.2 91 3329.9 89 3745 3682 3291.65 90
OCT-SEP 4472.6 92 4505.9 92 4443.6 91 4883
SALMON FALLS CREEK - NR SAN JACINTO APR-AUG 75.6 115 75.8 115 75.5 114 66 108 74.29 115
APR-JUL 74.0 115 74.0 115 74.0 115 65 107 74.19
APR-SEP 77.8 115 78.3 115 77.5 114 68 111 74.29 115
JAN-JUL 94.7 109 94.7 109 94.7 109 87 121 94.74
JAN-SEP 98.5 110 99.0 110 98.1 109 90 125 94.84 109
OCT-SEP 110.0 110 110.5 111 109.6 110 100
BIG LOST - AT HOWELL RANCH NEAR CHILLY APR-AUG 131.0 80 131.4 80 130.9 79 165 263 124.21 80
APR-JUL 123.4 80 123.4 80 123.4 80 154 242 123.41
APR-SEP 137.2 80 137.8 80 136.9 80 172 275 124.21 80
JAN-JUL 140.5 84 140.5 84 140.5 84 168 256 140.55
JAN-SEP 154.3 83 155.0 83 154.0 83 186 289 141.35 83
OCT-SEP 179.9 88 180.5 88 179.6 88 204
---------------------Forecast --------------------- ----------Runoff-----------
River Basin Period Probable % Maximum % Minimum % Average PrevYR CurYR %
BIG LOST - MACKAY RESERVOIR NEAR MACKAY APR-AUG 108.5 86 109.0 87 108.4 86 126 202 99.54 87
APR-JUL 98.2 87 98.2 87 98.2 87 113 179 98.22
APR-SEP 117.4 86 118.2 87 117.0 86 136 220 99.54 87
JAN-JUL 128.9 91 128.9 91 128.9 91 141 206 128.97
JAN-SEP 148.2 90 149.0 91 147.8 90 164 246 130.29 91
OCT-SEP 187.1 95 187.9 96 186.7 95 197
BIG WOOD - AT HAILEY APR-AUG 186.7 76 187.3 76 186.7 76 246 385 177.78 76
APR-JUL 176.5 76 176.5 76 176.5 76 232 357 176.66
APR-SEP 195.6 76 196.7 77 195.1 76 257 403 177.78 76
JAN-JUL 211.7 80 211.7 80 211.7 80 263 381 211.74
JAN-SEP 230.7 80 231.8 80 230.3 80 289 427 212.86 80
OCT-SEP 273.5 85 274.6 86 273.1 85 321
BIG WOOD - MAGIC DAM APR-AUG 148.7 63 149.8 64 148.6 63 235 417 147.09 65
APR-JUL 146.4 65 146.4 65 146.4 65 227 405 146.82
APR-SEP 152.0 63 155.0 64 150.7 63 240 428 147.09 65
JAN-JUL 187.8 69 187.8 69 187.8 69 273 415 187.93
JAN-SEP 193.4 68 196.4 69 192.1 67 286 438 188.20 69
OCT-SEP 224.6 73 227.6 74 223.3 73 307
LITTLE WOOD - NEAR CAREY APR-AUG 56.2 76 56.6 76 56.2 76 74 141 54.59 76
APR-JUL 54.1 76 54.1 76 54.1 76 71 136 54.26
APR-SEP 58.3 76 59.4 78 57.9 76 77 146 54.59 76
JAN-JUL 71.2 80 71.2 80 71.2 80 89 145 71.17
JAN-SEP 75.3 80 76.5 82 74.9 80 94 155 71.50 80
OCT-SEP 88.2 85 89.4 86 87.8 84 104
SNAKE - AT KING HILL APR-AUG 2820.0 96 2857.3 98 2797.8 96 2925 2175 2422.31 96
APR-JUL 2369.8 97 2369.8 97 2369.8 97 2450 1779 2374.26
APR-SEP 3264.1 96 3395.7 100 3228.2 95 3412 2603 2422.31 96
JAN-JUL 3514.0 85 3514.0 85 3514.0 85 4129 2836 3516.95
JAN-SEP 4408.3 87 4539.9 89 4372.4 86 5090 3660 3565.00 85
OCT-SEP 5592.5 84 5724.0 86 5556.6 84 6626
BRUNEAU - NEAR HOT SPRINGS APR-AUG 215.9 120 216.2 120 215.7 120 180 257 212.75 121
APR-JUL 212.0 121 212.0 121 212.0 121 176 251 212.30
APR-SEP 219.7 120 220.6 120 219.2 120 183 261 212.75 121
JAN-JUL 257.1 119 257.1 119 257.1 119 217 274 257.16
JAN-SEP 264.7 118 265.7 118 264.3 118 225 284 257.61 118
OCT-SEP 283.0 117 283.9 118 282.6 117 242
---------------------Forecast --------------------- ----------Runoff-----------
River Basin Period Probable % Maximum % Minimum % Average PrevYR CurYR %
SNAKE - BELOW SWAN FALLS APR-AUG 2802.3 100 2832.3 101 2783.0 99 2812 2144 2479.67 101
APR-JUL 2435.6 101 2435.6 101 2435.6 101 2405 1814 2440.15
APR-SEP 3255.3 100 3372.6 104 3223.5 99 3258 2529 2479.67 101
JAN-JUL 3682.3 88 3682.3 88 3682.3 88 4166 2924 3685.47
JAN-SEP 4502.0 90 4619.3 92 4470.1 89 5020 3639 3724.99 88
OCT-SEP 5765.8 88 5883.1 89 5733.9 87 6584
OWYHEE - OWYHEE DAM APR-AUG 594.0 185 596.4 186 593.6 185 321 544 580.58 188
APR-JUL 575.8 187 575.8 187 575.8 187 307 526 577.11
APR-SEP 607.9 181 611.8 182 606.0 181 336 563 580.58 188
JAN-JUL 859.5 157 859.5 157 859.5 157 547 665 859.69
JAN-SEP 891.5 155 895.4 156 889.7 155 575 702 863.16 157
OCT-SEP 947.1 148 951.0 148 945.2 148 641
SF BOISE - ANDERSON RANCH DAM APR-AUG 370.8 77 371.8 77 370.6 77 480 704 359.54 77
APR-JUL 357.2 77 357.2 77 357.2 77 462 671 357.76
APR-SEP 384.8 78 386.8 78 383.7 78 495 725 359.54 77
JAN-JUL 436.3 79 436.3 79 436.3 79 550 726 436.32
JAN-SEP 463.9 80 465.9 80 462.8 79 583 780 438.10 79
OCT-SEP 521.9 82 523.9 82 520.8 82 637
BOISE - LUCKY PEAK DAM APR-AUG 1043.4 81 1045.4 81 1043.1 81 1284 1680 1009.56 82
APR-JUL 1003.1 81 1003.1 81 1003.1 81 1232 1615 1004.72
APR-SEP 1080.9 81 1086.9 82 1078.8 81 1329 1730 1009.56 82
JAN-JUL 1282.3 82 1282.3 82 1282.3 82 1566 1793 1282.68
JAN-SEP 1360.1 82 1366.2 82 1358.0 82 1663 1908 1287.52 82
OCT-SEP 1520.9 83 1526.9 83 1518.7 83 1829
BOISE - NEAR PARMA APR-AUG 496.6 93 498.7 94 495.0 93 531 829 458.24 93
APR-JUL 453.9 93 453.9 93 453.9 93 486 786 454.98
APR-SEP 531.2 91 533.8 91 528.4 90 584 883 458.24 93
JAN-JUL 631.2 83 631.2 83 631.2 83 761 927 631.59
JAN-SEP 708.5 82 711.0 83 705.7 82 859 1024 634.85 83
OCT-SEP 864.7 85 867.3 85 861.9 84 1023
MALHEUR - NEAR DREWSEY APR-AUG 73.4 115 73.6 115 73.4 115 64 200 73.64 116
APR-JUL 73.3 115 73.3 115 73.3 115 64 199 73.62
APR-SEP 73.5 113 74.0 114 73.4 113 65 201 73.64 116
JAN-JUL 153.5 133 153.5 133 153.5 133 116 217 153.57
JAN-SEP 153.8 131 154.3 132 153.7 131 117 218 153.59 133
OCT-SEP 165.9 127 166.4 127 165.8 127 130
---------------------Forecast --------------------- ----------Runoff-----------
River Basin Period Probable % Maximum % Minimum % Average PrevYR CurYR %
NF MALHEUR - AT BEULAH APR-AUG 50.8 90 50.9 90 50.7 90 57 103 49.93 92
APR-JUL 49.6 92 49.6 92 49.6 92 54 101 49.68
APR-SEP 52.4 88 52.6 89 52.3 88 59 105 49.93 92
JAN-JUL 80.4 96 80.4 96 80.4 96 84 112 80.46
JAN-SEP 83.2 93 83.4 93 83.1 93 89 116 80.71 96
OCT-SEP 94.3 94 94.5 94 94.2 94 101
DEADWOOD - BELOW DEADWOOD RES APR-AUG 106.1 81 106.5 81 106.0 81 131 139 103.67 82
APR-JUL 103.2 83 103.2 83 103.2 83 125 135 103.25
APR-SEP 108.5 80 109.7 81 108.2 80 135 143 103.67 82
JAN-JUL 119.2 84 119.2 84 119.2 84 143 147 119.22
JAN-SEP 124.5 82 125.6 82 124.2 81 153 156 119.64 83
OCT-SEP 139.2 83 140.3 84 138.9 83 168
NF PAYETTE - CASCADE DAM APR-AUG 372.6 79 378.5 80 371.5 79 470 444 362.95 78
APR-JUL 362.3 78 362.3 78 362.3 78 463 426 362.53
APR-SEP 385.8 79 398.6 82 382.1 78 487 459 362.95 78
JAN-JUL 465.1 81 465.1 81 465.1 81 576 486 465.01
JAN-SEP 488.6 81 501.4 84 484.9 81 600 519 465.43 81
OCT-SEP 567.8 83 580.6 85 564.1 82 685
PAYETTE - NEAR HORSESHOE BEND APR-AUG 1280.9 83 1289.2 84 1279.5 83 1540 1617 1238.18 83
APR-JUL 1231.7 83 1231.7 83 1231.7 83 1484 1548 1232.86
APR-SEP 1331.2 83 1350.7 85 1325.5 83 1597 1673 1238.18 83
JAN-JUL 1547.7 83 1547.7 83 1547.7 83 1854 1753 1547.80
JAN-SEP 1647.1 84 1666.7 85 1641.5 83 1968 1877 1553.12 83
OCT-SEP 1874.0 85 1893.5 86 1868.3 85 2208
PAYETTE - NEAR EMMETT APR-AUG 1122.1 88 1125.4 88 1121.8 88 1277 1351 1036.30 87
APR-JUL 1024.0 87 1024.0 87 1024.0 87 1179 1228 1025.08
APR-SEP 1201.3 91 1207.7 91 1199.2 90 1325 1391 1036.30 87
JAN-JUL 1309.8 82 1309.8 82 1309.8 82 1589 1440 1310.29
JAN-SEP 1487.2 86 1493.5 86 1485.1 86 1736 1603 1321.51 82
OCT-SEP 1665.8 86 1672.1 86 1663.7 85 1947
WEISER - NEAR WEISER APR-AUG 293.6 77 294.0 77 293.5 77 380 474 282.04 77
APR-JUL 280.1 77 280.1 77 280.1 77 365 460 280.86
APR-SEP 304.3 78 305.5 78 303.9 78 389 484 282.04 77
JAN-JUL 476.7 74 476.7 74 476.7 74 645 624 476.81
JAN-SEP 500.9 75 502.1 75 500.5 75 669 648 477.99 74
OCT-SEP 534.7 74 535.9 74 534.4 74 726
---------------------Forecast --------------------- ----------Runoff-----------
River Basin Period Probable % Maximum % Minimum % Average PrevYR CurYR %
SNAKE - AT WEISER APR-AUG 5276.8 99 5313.2 100 5253.5 99 5311 5166 4773.11 100
APR-JUL 4704.2 100 4704.2 100 4704.2 100 4718 4589 4712.79
APR-SEP 5960.6 100 6105.5 103 5927.1 100 5956 5736 4773.11 100
JAN-JUL 6871.5 89 6871.5 89 6871.5 89 7719 6421 6876.10
JAN-SEP 8127.8 91 8272.7 92 8094.4 90 8957 7568 6936.42 89
OCT-SEP 9960.4 89 10105.3 90 9927.0 89 11199
BURNT - NR HEREFORD APR-AUG 32.0 106 32.5 107 31.9 105 30 60 31.37 105
APR-JUL 31.1 105 31.1 105 31.1 105 30 58 31.24
APR-SEP 32.8 106 33.5 108 32.5 105 31 62 31.37 105
JAN-JUL 55.8 111 55.8 111 55.8 111 50 66 55.77
JAN-SEP 57.4 112 58.1 113 57.2 111 51 70 55.90 111
OCT-SEP 63.0 109 63.7 110 62.7 108 58
EAGLE CREEK - ABOVE SKULL CK APR-AUG 129.1 77 129.2 77 129.1 77 169 173 124.25 77
APR-JUL 123.5 77 123.5 77 123.5 77 161 164 123.61
APR-SEP 133.7 77 133.7 77 133.6 77 174 179 124.25 77
JAN-JUL 149.4 80 149.4 80 149.4 80 188 177 149.43
JAN-SEP 159.5 79 159.6 79 159.5 79 201 192 150.07 80
OCT-SEP 178.8 81 178.9 81 178.8 81 221
SNAKE - BROWNLEE DAM APR-AUG 5630.7 98 5666.1 99 5606.4 98 5736 5640 5102.00 98
APR-JUL 5043.7 98 5043.7 98 5043.7 98 5125 5041 5053.36
APR-SEP 6350.2 99 6492.7 101 6314.9 99 6398 6240 5102.00 98
JAN-JUL 7482.2 90 7482.2 90 7482.2 90 8326 7036 7487.66
JAN-SEP 8788.7 92 8931.2 93 8753.4 91 9600 8236 7536.30 90
OCT-SEP 10729.8 90 10872.3 91 10694.5 90 11906
SNAKE - AT HELLS CANYON DAM APR-AUG 5770.2 95 5805.7 96 5745.9 95 6046 5878 5242.52 95
APR-JUL 5173.7 95 5173.7 95 5173.7 95 5429 5267 5183.18
APR-SEP 6489.7 96 6632.2 99 6454.4 96 6725 6478 5242.52 95
JAN-JUL 7689.5 87 7689.5 87 7689.5 87 8834 7263 7694.82
JAN-SEP 9005.5 89 9148.0 90 8970.3 89 10130 8474 7754.16 87
OCT-SEP 10946.3 88 11088.8 89 10911.0 87 12500
IMNAHA - AT IMNAHA APR-AUG 195.7 73 195.7 73 195.7 73 269 309 188.49 73
APR-JUL 187.4 73 187.4 73 187.4 73 258 296 187.63
APR-SEP 202.7 73 202.7 73 202.7 73 277 318 188.49 73
JAN-JUL 247.0 78 247.0 78 247.0 78 315 328 247.06
JAN-SEP 262.3 78 262.3 78 262.3 78 334 349 247.92 78
OCT-SEP 294.5 80 294.5 80 294.5 80 366
---------------------Forecast --------------------- ----------Runoff-----------
River Basin Period Probable % Maximum % Minimum % Average PrevYR CurYR %
SALMON - AT SALMON APR-AUG 624.3 72 628.9 72 623.2 71 873 933 594.91 73
APR-JUL 589.8 73 589.8 73 589.8 73 810 860 590.39
APR-SEP 675.4 73 685.3 74 671.3 72 929 1001 594.91 73
JAN-JUL 794.7 79 794.7 79 794.7 79 1008 1025 795.33
JAN-SEP 880.3 78 890.2 79 876.2 78 1126 1166 799.85 79
OCT-SEP 1110.7 83 1120.6 83 1106.6 82 1346
SALMON - AT WHITEBIRD APR-AUG 4811.6 81 4817.2 81 4810.3 81 5917 6069 4588.57 81
APR-JUL 4557.6 81 4557.6 81 4557.6 81 5614 5738 4560.91
APR-SEP 5059.7 82 5072.3 82 5053.6 82 6158 6349 4588.57 81
JAN-JUL 5445.5 83 5445.5 83 5445.5 83 6555 6373 5447.49
JAN-SEP 5947.6 84 5960.2 84 5941.6 84 7099 6984 5475.15 83
OCT-SEP 6824.3 86 6836.9 86 6818.2 86 7958
GRANDE RONDE - NEAR PERRY APR-AUG 99.6 57 100.2 58 99.5 57 174 148 98.82 57
APR-JUL 98.4 57 98.4 57 98.4 57 172 147 98.72
APR-SEP 101.2 58 102.3 58 100.8 57 176 150 98.82 57
JAN-JUL 197.3 73 197.3 73 197.3 73 271 163 197.37
JAN-SEP 200.1 73 201.2 73 199.7 73 274 166 197.47 73
OCT-SEP 216.2 74 217.3 75 215.8 74 291
LOSTINE - NR LOSTINE APR-AUG 82.0 73 82.3 73 82.0 73 113 101 80.06 74
APR-JUL 79.6 74 79.6 74 79.6 74 108 97 79.66
APR-SEP 83.3 72 86.6 75 82.8 72 116 103 80.06 74
JAN-JUL 91.8 77 91.8 77 91.8 77 119 103 91.81
JAN-SEP 95.5 76 98.7 78 95.0 75 126 109 92.21 77
OCT-SEP 107.7 79 111.0 81 107.2 78 137
GRANDE RONDE - TROY APR-AUG 922.4 71 923.5 71 922.2 71 1293 1287 902.58 72
APR-JUL 895.9 72 895.9 72 895.9 72 1251 1250 899.35
APR-SEP 949.1 71 952.7 72 947.2 71 1331 1322 902.58 72
JAN-JUL 1480.5 79 1480.5 79 1480.5 79 1872 1542 1482.55
JAN-SEP 1533.7 79 1537.3 79 1531.8 78 1952 1614 1485.78 79
OCT-SEP 1743.3 80 1746.9 81 1741.4 80 2170
SNAKE - LOWER GRANITE DAM APR-AUG 17373.3 82 17412.2 82 17344.1 82 21121 20398 16481.32 82
APR-JUL 16352.4 82 16352.4 82 16352.4 82 19946 19295 16377.92
APR-SEP 18480.3 83 18666.9 84 18428.3 83 22232 21413 16481.32 82
JAN-JUL 22234.4 81 22234.4 81 22234.4 81 27450 23417 22244.03
JAN-SEP 24362.2 82 24548.9 83 24310.2 82 29736 25535 22347.43 81
OCT-SEP 28206.9 82 28393.5 83 28154.9 82 34287
---------------------Forecast --------------------- ----------Runoff-----------
River Basin Period Probable % Maximum % Minimum % Average PrevYR CurYR %
CLEARWATER - AT OROFINO APR-AUG 3673.8 81 3677.7 81 3671.8 81 4539 4108 3592.47 81
APR-JUL 3575.5 81 3575.5 81 3575.5 81 4417 3997 3580.04
APR-SEP 3753.3 81 3767.5 81 3744.4 81 4632 4198 3592.47 81
JAN-JUL 4574.0 83 4574.0 83 4574.0 83 5531 4503 4575.38
JAN-SEP 4751.8 83 4766.0 83 4742.9 83 5745 4704 4587.81 83
OCT-SEP 5229.6 83 5243.8 83 5220.8 83 6313
NF CLEARWATER - DWORSHAK DAM APR-AUG 1626.8 64 1630.5 64 1625.7 64 2554 2167 1578.73 64
APR-JUL 1568.6 63 1568.6 63 1568.6 63 2474 2105 1571.44
APR-SEP 1675.3 64 1689.4 64 1671.3 64 2620 2215 1578.73 64
JAN-JUL 2280.8 67 2280.8 67 2280.8 67 3397 2488 2281.48
JAN-SEP 2387.4 67 2401.6 68 2383.5 67 3543 2598 2288.77 67
OCT-SEP 2686.6 67 2700.8 68 2682.7 67 3998
CLEARWATER - AT SPALDING APR-AUG 5361.8 73 5369.6 73 5358.6 73 7319 6601 5227.16 73
APR-JUL 5197.4 73 5197.4 73 5197.4 73 7117 6399 5205.29
APR-SEP 5495.8 73 5521.4 74 5482.7 73 7481 6759 5227.16 73
JAN-JUL 7072.3 75 7072.3 75 7072.3 75 9421 7579 7074.60
JAN-SEP 7370.6 75 7396.3 76 7357.6 75 9785 7938 7096.47 75
OCT-SEP 8184.2 75 8209.9 76 8171.2 75 10841
COLUMBIA - MCNARY DAM APR-AUG 62489.1 71 62906.0 71 62377.3 71 88088 73640 57499.64 70
APR-JUL 56847.5 70 56847.5 70 56847.5 70 80726 67975 56889.63
APR-SEP 66669.0 72 67685.4 73 66269.4 71 92790 77536 57499.64 70
JAN-JUL 74359.3 74 74359.3 74 74359.3 74 99964 78693 74357.16
JAN-SEP 84180.8 75 85197.2 76 83781.2 75 112028 88254 74967.17 74
OCT-SEP 96739.8 76 97756.2 77 96340.2 76 126785
UMATILLA - NEAR GIBBON APR-AUG 48.7 61 48.7 61 48.7 61 80 75 46.67 60
APR-JUL 46.2 60 46.2 60 46.2 60 77 72 46.42
APR-SEP 50.9 62 51.0 62 50.9 62 82 77 46.67 60
JAN-JUL 106.6 74 106.6 74 106.6 74 145 100 106.65
JAN-SEP 111.3 74 111.4 74 111.2 74 150 106 106.90 74
OCT-SEP 135.7 78 135.8 78 135.6 78 174
UMATILLA - AT PENDLETON APR-AUG 87.5 56 87.6 57 87.5 56 155 207 86.56 57
APR-JUL 85.9 56 85.9 56 85.9 56 152 204 86.38
APR-SEP 89.3 57 89.6 57 89.1 56 158 210 86.56 57
JAN-JUL 244.9 75 244.9 75 244.9 75 326 297 245.02
JAN-SEP 248.3 75 248.7 75 248.1 75 331 304 245.20 75
OCT-SEP 303.1 80 303.4 80 302.9 80 380
---------------------Forecast --------------------- ----------Runoff-----------
River Basin Period Probable % Maximum % Minimum % Average PrevYR CurYR %
NF JOHN DAY - AT MONUMENT APR-AUG 439.8 79 440.5 79 439.7 79 558 768 437.09 79
APR-JUL 435.4 79 435.4 79 435.4 79 551 763 436.54
APR-SEP 444.9 79 446.4 79 444.1 79 564 773 437.09 79
JAN-JUL 869.9 100 869.9 100 869.9 100 869 886 870.14
JAN-SEP 879.4 100 880.9 100 878.6 100 883 896 870.69 100
OCT-SEP 950.3 101 951.9 101 949.5 101 945
JOHN DAY - AT SERVICE CK APR-AUG 639.4 81 640.8 81 638.8 81 790 1150 636.72 81
APR-JUL 634.2 81 634.2 81 634.2 81 781 1142 636.04
APR-SEP 647.8 81 651.0 82 646.0 81 798 1159 636.72 81
JAN-JUL 1368.3 108 1368.3 108 1368.3 108 1262 1323 1368.68
JAN-SEP 1381.8 108 1385.1 108 1380.1 108 1279 1341 1369.36 108
OCT-SEP 1499.5 108 1502.8 108 1497.8 108 1392
COLUMBIA - JOHN DAY DAM APR-AUG 64757.3 74 65174.7 74 64646.0 74 87643 73560 59693.91 73
APR-JUL 59007.7 73 59007.7 73 59007.7 73 80636 68191 59059.70
APR-SEP 69016.3 75 70034.3 76 68612.7 74 92354 77307 59693.91 73
JAN-JUL 77511.1 77 77511.1 77 77511.1 77 101178 79353 77513.73
JAN-SEP 87519.6 78 88537.6 78 87116.1 77 112896 88469 78147.94 77
OCT-SEP 100060.5 78 101078.6 79 99656.9 78 128295
DESCHUTES - AT MOODY NR BIGGS APR-AUG 1513.5 92 1513.9 92 1513.5 92 1637 1607 1271.48 91
APR-JUL 1241.8 91 1241.8 91 1241.8 91 1365 1356 1244.89
APR-SEP 1778.9 94 1779.6 94 1778.6 93 1902 1867 1271.48 91
JAN-JUL 2477.1 96 2477.1 96 2477.1 96 2590 2186 2479.34
JAN-SEP 3014.2 96 3014.9 96 3013.9 96 3127 2697 2505.93 95
OCT-SEP 3910.9 95 3911.6 95 3910.6 95 4118
COLUMBIA - THE DALLES DAM APR-AUG 65330.4 73 65747.6 74 65219.1 73 89196 74301 60164.75 73
APR-JUL 59477.8 73 59477.8 73 59477.8 73 81933 68709 59534.89
APR-SEP 69777.7 74 70794.5 75 69373.5 74 94166 78281 60164.75 73
JAN-JUL 78815.5 76 78815.5 76 78815.5 76 103714 80311 78824.91
JAN-SEP 89115.4 77 90132.2 78 88711.2 77 115946 89883 79454.77 76
OCT-SEP 102369.7 77 103386.4 78 101965.5 77 132314
COLUMBIA - BONNEVILLE DAM APR-AUG 65751.0 73 66171.2 73 65642.9 73 90174 75611 60475.14 72
APR-JUL 59754.5 72 59754.5 72 59754.5 72 82678 69925 59806.76
APR-SEP 70295.0 74 71310.8 75 69896.1 73 95202 79889 60475.14 72
JAN-JUL 81019.0 77 81019.0 77 81019.0 77 105246 83356 81036.72
JAN-SEP 91559.4 78 92575.4 79 91160.6 77 117770 93320 81705.10 77
OCT-SEP 106022.0 79 107037.8 80 105623.1 79 134527
---------------------Forecast --------------------- ----------Runoff-----------
River Basin Period Probable % Maximum % Minimum % Average PrevYR CurYR %
MCKENZIE - NEAR VIDA APR-AUG 1026.2 94 1028.2 94 1026.0 94 1091 1250 909.25 92
APR-JUL 893.5 91 893.5 91 893.5 91 978 1129 895.91
APR-SEP 1133.5 95 1151.2 96 1129.9 95 1195 1368 909.25 92
JAN-JUL 2092.1 105 2092.1 105 2092.1 105 2001 1756 2093.68
JAN-SEP 2332.1 105 2349.8 106 2328.5 105 2219 1995 2107.02 105
OCT-SEP 3135.6 106 3153.3 107 3132.0 106 2951
NORTH SANTIAM - AT MEHAMA APR-AUG 715.8 89 720.0 90 715.3 89 802 856 683.09 90
APR-JUL 677.6 90 677.6 90 677.6 90 753 817 678.74
APR-SEP 756.0 88 774.3 91 750.7 88 855 897 683.09 90
JAN-JUL 1854.0 109 1854.0 109 1854.0 109 1703 1347 1855.69
JAN-SEP 1932.4 107 1950.7 108 1927.0 107 1805 1427 1860.04 109
OCT-SEP 2660.9 105 2679.2 106 2655.6 105 2522
SOUTH SANTIAM - AT WATERLOO APR-AUG 519.6 91 521.5 91 519.4 91 571 662 507.59 91
APR-JUL 504.7 90 504.7 90 504.7 90 558 650 506.44
APR-SEP 530.9 90 547.0 93 527.9 89 590 672 507.59 91
JAN-JUL 1608.5 110 1608.5 110 1608.5 110 1462 1112 1609.35
JAN-SEP 1634.7 109 1650.8 110 1631.6 109 1494 1134 1610.50 110
OCT-SEP 2183.8 102 2199.8 102 2180.7 102 2146
WILLAMETTE - AT SALEM APR-AUG 4178.2 92 4203.5 93 4175.9 92 4539 5214 4033.48 93
APR-JUL 3999.6 92 3999.6 92 3999.6 92 4324 5057 4012.81
APR-SEP 4355.5 92 4482.6 94 4322.5 91 4754 5371 4033.48 93
JAN-JUL 13117.6 114 13117.6 114 13117.6 114 11461 9247 13126.44
JAN-SEP 13473.6 113 13600.6 114 13440.6 113 11890 9560 13147.11 114
OCT-SEP 17377.3 107 17504.4 107 17344.4 106 16315
CLACKAMAS - AT ESTACADA APR-AUG 622.0 92 624.8 92 621.4 92 677 694 578.70 92
APR-JUL 572.1 92 572.1 92 572.1 92 624 653 573.85
APR-SEP 672.7 92 684.7 93 668.1 91 733 740 578.70 92
JAN-JUL 1412.4 105 1412.4 105 1412.4 105 1341 1020 1413.37
JAN-SEP 1513.0 104 1524.9 105 1508.4 104 1450 1107 1418.22 105
OCT-SEP 1972.6 100 1984.5 101 1968.0 100 1975
LEWIS - MERWIN DAM APR-AUG 924.3 95 928.0 96 924.3 95 969 1108 882.98 99
APR-JUL 873.7 99 873.7 99 873.7 99 881 1059 876.90
APR-SEP 971.4 90 1000.9 92 962.8 89 1082 1158 882.98 99
JAN-JUL 2259.5 105 2259.5 105 2259.5 105 2162 1952 2261.45
JAN-SEP 2357.2 100 2386.7 101 2348.6 99 2363 2050 2267.53 104
OCT-SEP 3437.3 101 3466.8 101 3428.7 100 3417
---------------------Forecast --------------------- ----------Runoff-----------
River Basin Period Probable % Maximum % Minimum % Average PrevYR CurYR %
COWLITZ - MAYFIELD RESERVOIR APR-AUG 1228.3 70 1234.5 70 1226.0 69 1765 1518 1105.97 67
APR-JUL 1068.7 65 1068.7 65 1068.7 65 1648 1446 1093.98
APR-SEP 1303.3 70 1329.3 71 1291.0 69 1864 1592 1105.97 67
JAN-JUL 2485.2 78 2485.2 78 2485.2 78 3204 2286 2511.64
JAN-SEP 2719.8 80 2745.8 80 2707.5 79 3420 2432 2523.63 78
OCT-SEP 3880.7 84 3906.6 84 3868.4 84 4624
COWLITZ - AT CASTLE ROCK APR-AUG 1727.5 73 1736.5 73 1724.9 73 2366 2155 1562.62 70
APR-JUL 1541.1 70 1541.1 70 1541.1 70 2213 2063 1549.25
APR-SEP 1835.1 73 1876.6 75 1817.5 73 2504 2240 1562.62 70
JAN-JUL 3919.7 85 3919.7 85 3919.7 85 4638 3479 3929.15
JAN-SEP 4213.7 85 4255.2 86 4196.1 85 4929 3655 3942.52 85
OCT-SEP 5967.8 89 6009.3 89 5950.2 88 6739
ROGUE - AT RAYGOLD APR-AUG 683.8 90 686.6 90 683.6 90 759 745 628.33 90
APR-JUL 619.8 90 619.8 90 619.8 90 687 686 621.76
APR-SEP 744.7 90 753.9 91 742.6 89 831 807 628.33 90
JAN-JUL 1540.0 107 1540.0 107 1540.0 107 1442 1099 1540.97
JAN-SEP 1664.9 105 1674.1 106 1662.9 105 1586 1220 1547.54 107
OCT-SEP 1970.2 97 1979.4 97 1968.2 97 2032
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