Northwest River Forecast Center
Water Supply Seasonal Forecasts
Ensemble Date: 2025-09-18 Issued Date: 2025-09-18
Water Year 2025
---------------------Forecast --------------------- ----------Runoff-----------
River Basin Period Probable % Maximum % Minimum % Average PrevYR CurYR %
SILVIES - NEAR BURNS APR-AUG 156.8 222 156.8 222 156.8 222 71 75 158.30
APR-JUL 154.9 222 154.9 222 154.9 222 70 75 156.41
APR-SEP 158.2 221 158.2 221 158.2 221 71 76 159.04 223
JAN-JUL 280.5 259 280.5 259 280.5 259 108 125 280.55
JAN-SEP 283.8 258 283.8 258 283.8 258 110 126 283.18 258
OCT-SEP 291.7 252 291.8 252 291.7 252 116
DONNER UND BLITZEN - NR FRENCHGLEN APR-AUG 77.0 128 77.0 128 77.0 128 60 69 76.52
APR-JUL 73.5 128 73.5 128 73.5 128 57 67 72.99
APR-SEP 80.0 128 80.0 128 80.0 128 63 72 78.26 127
JAN-JUL 114.6 154 114.6 154 114.6 154 74 90 114.01
JAN-SEP 121.1 153 121.2 153 121.1 153 79 95 119.28 152
OCT-SEP 136.1 155 136.1 155 136.1 155 88
DUNGENESS - NEAR SEQUIM APR-AUG 107.9 80 107.9 80 107.9 80 136 79 108.13
APR-JUL 99.5 82 99.5 82 99.5 82 121 71 99.72
APR-SEP 113.2 78 113.5 78 113.2 78 145 84 111.23 79
JAN-JUL 146.4 75 146.4 75 146.4 75 195 135 146.58
JAN-SEP 160.1 73 160.3 73 160.1 73 219 148 158.09 74
OCT-SEP 217.1 76 217.3 76 217.1 76 287
SKAGIT - NEAR CONCRETE APR-AUG 3960.0 71 3960.0 71 3960.0 71 5549 3847 3966.48
APR-JUL 3538.2 71 3538.2 71 3538.2 71 4959 3376 3544.60
APR-SEP 4236.8 71 4261.4 72 4233.4 71 5955 4137 4124.12 71
JAN-JUL 5439.7 74 5439.7 74 5439.7 74 7334 5683 5445.45
JAN-SEP 6138.4 74 6162.9 74 6134.9 74 8330 6443 6024.97 74
OCT-SEP 8615.0 79 8639.6 79 8611.6 78 10972
COLUMBIA - MICA DAM APR-AUG 10195.0 91 10195.0 91 10195.0 91 11166 8865 10190.81
APR-JUL 8136.5 90 8136.5 90 8136.5 90 9064 6864 8132.35
APR-SEP 11345.9 92 11368.1 92 11343.9 92 12296 10139 11028.10 93
JAN-JUL 8924.0 91 8924.0 91 8924.0 91 9850 7469 8925.42
JAN-SEP 12133.5 93 12155.6 93 12131.4 93 13082 10743 11821.17 94
OCT-SEP 13975.5 97 13997.7 97 13973.5 97 14472
COLUMBIA - REVELSTOKE DAM APR-AUG 14443.2 92 14443.2 92 14443.2 92 15746 12525 14447.25
APR-JUL 11781.2 90 11781.2 90 11781.2 90 13046 9980 11785.26
APR-SEP 15914.3 92 15940.6 92 15908.3 92 17242 14161 15493.24 93
JAN-JUL 12937.3 92 12937.3 92 12937.3 92 14115 10965 12936.18
JAN-SEP 17070.4 93 17096.7 93 17064.3 93 18311 15147 16644.16 94
OCT-SEP 19894.4 98 19920.8 98 19888.4 98 20340
---------------------Forecast --------------------- ----------Runoff-----------
River Basin Period Probable % Maximum % Minimum % Average PrevYR CurYR %
COLUMBIA - ARROW LAKES (HUGH KEENLEYSIDE DAM)APR-AUG 20014.9 90 20014.9 90 20014.9 90 22135 17325 20022.81
APR-JUL 16687.8 89 16687.8 89 16687.8 89 18779 14200 16695.71
APR-SEP 21849.5 91 21879.6 91 21842.8 91 24059 19383 21297.90 91
JAN-JUL 18817.4 91 18817.4 91 18817.4 91 20698 16327 18826.22
JAN-SEP 23979.1 92 24009.2 92 23972.4 92 25978 21509 23428.41 93
OCT-SEP 28319.9 97 28350.0 97 28313.2 97 29084
KOOTENAI - LIBBY DAM APR-AUG 4254.5 70 4254.5 70 4254.5 70 6080 4789 4257.17
APR-JUL 3837.1 69 3837.1 69 3837.1 69 5570 4352 3839.75
APR-SEP 4495.5 70 4496.6 70 4495.0 70 6429 5091 4403.53 70
JAN-JUL 4312.8 69 4312.8 69 4312.8 69 6227 4940 4313.59
JAN-SEP 4971.2 70 4972.3 70 4970.7 70 7086 5679 4877.37 70
OCT-SEP 5763.2 72 5764.4 72 5762.8 72 7981
KOOTENAI - AT LEONIA APR-AUG 5177.7 70 5177.7 70 5177.7 70 7409 5708 5183.14
APR-JUL 4735.5 69 4735.5 69 4735.5 69 6858 5228 4740.90
APR-SEP 5445.0 70 5446.2 70 5444.5 70 7803 6043 5343.29 70
JAN-JUL 5486.6 70 5486.6 70 5486.6 70 7877 6189 5488.28
JAN-SEP 6196.1 70 6197.3 70 6195.6 70 8822 7003 6090.67 70
OCT-SEP 7105.0 72 7106.2 72 7104.5 72 9923
MOYIE - AT EASTPORT APR-AUG 252.8 65 252.8 65 252.8 65 390 271 253.19
APR-JUL 245.5 64 245.5 64 245.5 64 382 267 245.87
APR-SEP 256.9 65 257.0 65 256.9 65 395 274 255.59 65
JAN-JUL 274.2 64 274.2 64 274.2 64 431 322 274.27
JAN-SEP 285.7 64 285.8 64 285.7 64 443 330 283.99 64
OCT-SEP 297.6 62 297.7 62 297.6 62 479
KOOTENAI - AT BONNERS FERRY APR-AUG 5643.8 70 5643.8 70 5643.8 70 8061 6208 5649.91
APR-JUL 5167.8 69 5167.8 69 5167.8 69 7495 5703 5173.89
APR-SEP 5937.2 70 5938.5 70 5936.8 70 8463 6562 5826.59 70
JAN-JUL 5959.7 69 5959.7 69 5959.7 69 8596 6723 5962.45
JAN-SEP 6729.1 70 6730.3 70 6728.6 70 9565 7582 6615.15 70
OCT-SEP 7667.1 71 7668.3 72 7666.6 71 10724
DUNCAN - DUNCAN DAM APR-AUG 1743.1 85 1743.1 85 1743.1 85 2040 1617 1743.78
APR-JUL 1454.8 85 1454.8 85 1454.8 85 1713 1330 1455.43
APR-SEP 1923.0 86 1923.6 86 1922.8 86 2224 1794 1867.17 87
JAN-JUL 1588.2 86 1588.2 86 1588.2 86 1849 1474 1588.69
JAN-SEP 2056.5 87 2057.0 87 2056.2 87 2361 1938 2000.43 87
OCT-SEP 2394.7 91 2395.3 91 2394.5 91 2620
---------------------Forecast --------------------- ----------Runoff-----------
River Basin Period Probable % Maximum % Minimum % Average PrevYR CurYR %
KOOTENAI - KOOTENAY L AT QUEENS BAY APR-AUG 10969.5 73 10969.5 73 10969.5 73 15052 11303 10978.51
APR-JUL 10010.6 72 10010.6 72 10010.6 72 13836 10270 10019.58
APR-SEP 11555.1 73 11556.9 73 11554.4 73 15842 11963 11330.00 73
JAN-JUL 11486.7 73 11486.7 73 11486.7 73 15754 12270 11491.52
JAN-SEP 13031.2 73 13033.1 73 13030.5 73 17761 13963 12801.94 73
OCT-SEP 14893.0 75 14894.9 75 14892.3 75 19885
SLOCAN - NEAR CRESCENT VALLEY APR-AUG 1428.1 77 1428.1 77 1428.1 77 1850 1293 1429.12
APR-JUL 1337.5 78 1337.5 78 1337.5 78 1708 1195 1338.52
APR-SEP 1477.2 76 1477.2 76 1477.2 76 1933 1352 1459.27 77
JAN-JUL 1493.9 79 1493.9 79 1493.9 79 1892 1416 1494.38
JAN-SEP 1633.5 77 1633.5 77 1633.5 77 2116 1573 1615.13 78
OCT-SEP 1858.0 79 1858.0 79 1858.0 79 2364
COLUMBIA - AT BIRCHBANK APR-AUG 32729.3 82 32729.3 82 32729.3 82 39736 30510 32748.03
APR-JUL 28344.3 81 28344.3 81 28344.3 81 34960 26164 28363.03
APR-SEP 35253.9 83 35291.7 83 35246.7 83 42578 33308 34421.24 83
JAN-JUL 32214.8 82 32214.8 82 32214.8 82 39168 30729 32228.76
JAN-SEP 39124.4 84 39162.2 84 39117.2 84 46786 37873 38286.97 84
OCT-SEP 45528.6 87 45566.3 87 45521.3 87 52397
BLACKFOOT - NEAR BONNER APR-AUG 414.5 48 414.5 48 414.5 48 855 373 415.18
APR-JUL 389.5 48 389.5 48 389.5 48 811 346 390.18
APR-SEP 434.6 49 434.6 49 434.6 49 891 396 426.18 49
JAN-JUL 473.4 51 473.4 51 473.4 51 937 441 473.60
JAN-SEP 518.4 51 518.4 51 518.4 51 1017 491 509.60 51
OCT-SEP 592.0 53 592.1 53 592.0 53 1126
CLARK FORK - ABOVE BLACKFOOT APR-AUG 379.1 60 379.1 60 379.1 60 637 390 379.65
APR-JUL 357.4 60 357.4 60 357.4 60 594 365 357.91
APR-SEP 397.2 58 397.3 58 397.2 58 680 415 389.57 59
JAN-JUL 482.3 64 482.3 64 482.3 64 756 529 482.56
JAN-SEP 522.1 62 522.2 62 522.1 62 842 579 514.22 62
OCT-SEP 634.4 64 634.5 64 634.4 64 996
CLARK FORK - ABOVE MISSOULA APR-AUG 793.6 53 793.6 53 793.6 53 1492 763 794.82
APR-JUL 746.9 53 746.9 53 746.9 53 1405 711 748.08
APR-SEP 831.8 53 831.9 53 831.8 53 1571 812 815.74 53
JAN-JUL 955.7 56 955.7 56 955.7 56 1693 970 956.15
JAN-SEP 1040.5 56 1040.7 56 1040.5 56 1859 1070 1023.81 56
OCT-SEP 1226.5 58 1226.6 58 1226.4 58 2122
---------------------Forecast --------------------- ----------Runoff-----------
River Basin Period Probable % Maximum % Minimum % Average PrevYR CurYR %
BITTERROOT - NEAR DARBY APR-AUG 322.3 65 322.3 65 322.3 65 497 358 322.55
APR-JUL 296.1 64 296.1 64 296.1 64 465 335 296.44
APR-SEP 341.8 66 342.0 66 341.8 66 519 380 334.57 66
JAN-JUL 341.5 65 341.5 65 341.5 65 521 378 341.57
JAN-SEP 387.2 67 387.4 67 387.1 67 575 423 379.70 67
OCT-SEP 421.0 67 421.2 67 421.0 67 624
BITTERROOT - NEAR MISSOULA APR-AUG 811.0 65 811.0 65 811.0 65 1241 796 812.21
APR-JUL 776.0 65 776.0 65 776.0 65 1191 760 777.20
APR-SEP 844.3 65 844.5 66 844.3 65 1289 841 829.96 65
JAN-JUL 941.5 68 941.5 68 941.5 68 1385 922 941.90
JAN-SEP 1009.9 68 1010.0 68 1009.9 68 1484 1003 994.66 68
OCT-SEP 1137.0 68 1137.2 68 1137.0 68 1669
CLARK FORK - BELOW MISSOULA APR-AUG 1548.7 56 1548.7 56 1548.7 56 2767 1546 1551.00
APR-JUL 1463.2 56 1463.2 56 1463.2 56 2630 1457 1465.49
APR-SEP 1625.0 56 1625.3 56 1625.0 56 2893 1640 1592.62 56
JAN-JUL 1837.3 59 1837.3 59 1837.3 59 3121 1875 1838.18
JAN-SEP 1999.1 59 1999.4 59 1999.0 59 3384 2057 1965.31 59
OCT-SEP 2321.7 60 2322.0 60 2321.7 60 3838
CLARK FORK - AT ST REGIS APR-AUG 2082.5 58 2082.5 58 2082.5 58 3610 2061 2086.02
APR-JUL 1966.9 57 1966.9 57 1966.9 57 3429 1942 1970.39
APR-SEP 2183.4 58 2183.7 58 2183.4 58 3771 2186 2140.91 58
JAN-JUL 2466.3 60 2466.3 60 2466.3 60 4109 2486 2467.47
JAN-SEP 2682.8 60 2683.1 60 2682.8 60 4451 2730 2637.99 60
OCT-SEP 3101.1 62 3101.3 62 3101.0 62 5042
NF FLATHEAD - NEAR COLUMBIA FALLS APR-AUG 1229.9 73 1229.9 73 1229.9 73 1690 1303 1231.28
APR-JUL 1155.4 72 1155.4 72 1155.4 72 1600 1234 1156.81
APR-SEP 1271.4 73 1271.4 73 1271.4 73 1750 1348 1254.91 73
JAN-JUL 1290.3 73 1290.3 73 1290.3 73 1771 1431 1290.67
JAN-SEP 1406.3 73 1406.3 73 1406.3 73 1921 1546 1388.77 73
OCT-SEP 1521.4 71 1521.4 71 1521.4 71 2133
MF FLATHEAD - NEAR WEST GLACIER APR-AUG 1230.4 75 1230.4 75 1230.4 75 1651 1227 1232.45
APR-JUL 1179.3 75 1179.3 75 1179.3 75 1576 1170 1181.40
APR-SEP 1256.6 74 1256.6 74 1256.6 74 1697 1267 1248.24 74
JAN-JUL 1339.0 77 1339.0 77 1339.0 77 1744 1356 1339.32
JAN-SEP 1416.3 76 1416.3 76 1416.3 76 1865 1453 1406.16 76
OCT-SEP 1508.8 73 1508.8 73 1508.8 73 2065
---------------------Forecast --------------------- ----------Runoff-----------
River Basin Period Probable % Maximum % Minimum % Average PrevYR CurYR %
SF FLATHEAD - HUNGRY HORSE DAM APR-AUG 1420.3 70 1420.3 70 1420.3 70 2043 1375 1422.86
APR-JUL 1385.9 70 1385.9 70 1385.9 70 1981 1335 1388.46
APR-SEP 1444.3 69 1444.3 69 1444.3 69 2088 1408 1435.95 69
JAN-JUL 1644.0 74 1644.0 74 1644.0 74 2236 1577 1644.89
JAN-SEP 1702.4 73 1702.4 73 1702.4 73 2343 1651 1692.38 73
OCT-SEP 1836.8 72 1836.8 72 1836.8 72 2567
FLATHEAD - AT COLUMBIA FALLS APR-AUG 3847.2 70 3847.2 70 3847.2 70 5473 3922 3853.06
APR-JUL 3685.7 70 3685.7 70 3685.7 70 5237 3756 3691.48
APR-SEP 3939.5 70 3939.5 70 3939.5 70 5634 4035 3904.48 70
JAN-JUL 4172.3 71 4172.3 71 4172.3 71 5847 4364 4173.63
JAN-SEP 4426.1 71 4426.1 71 4426.1 71 6244 4643 4386.63 71
OCT-SEP 4719.5 68 4719.5 68 4719.5 68 6906
FLATHEAD - SELI’Š KSANKA QLISPE’ DAMAPR-AUG 4515.9 71 4515.9 71 4515.9 71 6396 4499 4520.94
APR-JUL 4319.7 70 4319.7 70 4319.7 70 6137 4298 4324.70
APR-SEP 4616.3 70 4616.4 70 4616.3 70 6577 4637 4578.66 70
JAN-JUL 5035.4 72 5035.4 72 5035.4 72 7010 5115 5037.37
JAN-SEP 5332.1 72 5332.2 72 5332.1 72 7450 5454 5291.33 72
OCT-SEP 5800.0 70 5800.1 70 5800.0 70 8277
CLARK FORK - NEAR PLAINS APR-AUG 6863.2 67 6863.2 67 6863.2 67 10215 6688 6871.72
APR-JUL 6533.2 67 6533.2 67 6533.2 67 9749 6329 6541.73
APR-SEP 7081.8 67 7082.6 67 7081.7 67 10574 6971 6991.62 67
JAN-JUL 7812.4 69 7812.4 69 7812.4 69 11342 7732 7813.86
JAN-SEP 8361.0 69 8361.8 69 8360.9 69 12168 8375 8263.75 69
OCT-SEP 9274.0 68 9274.8 68 9274.0 68 13632
CLARK FORK - CABINET GORGE DAM APR-AUG 6986.1 62 6986.1 62 6986.1 62 11280 6875 6997.51
APR-JUL 6675.3 62 6675.3 62 6675.3 62 10767 6552 6686.73
APR-SEP 7181.7 62 7182.7 62 7181.7 62 11639 7126 7099.64 62
JAN-JUL 7934.8 63 7934.8 63 7934.8 63 12591 7995 7935.47
JAN-SEP 8441.2 63 8442.1 63 8441.2 63 13463 8568 8348.38 63
OCT-SEP 9244.4 62 9245.3 62 9244.4 62 14991
PRIEST - NEAR PRIEST RIVER APR-AUG 635.0 77 635.0 77 635.0 77 823 591 637.49
APR-JUL 618.1 77 618.1 77 618.1 77 800 576 620.60
APR-SEP 653.6 78 654.3 78 653.6 78 843 602 644.92 77
JAN-JUL 803.8 78 803.8 78 803.8 78 1026 891 803.59
JAN-SEP 839.3 79 840.0 79 839.3 79 1069 917 827.91 78
OCT-SEP 942.6 77 943.2 78 942.6 77 1217
---------------------Forecast --------------------- ----------Runoff-----------
River Basin Period Probable % Maximum % Minimum % Average PrevYR CurYR %
PEND OREILLE - ALBENI FALLS DAM APR-AUG 8753.1 68 8753.1 68 8753.1 68 12919 8475 8764.48
APR-JUL 8379.2 68 8379.2 68 8379.2 68 12369 8056 8390.53
APR-SEP 9007.5 67 9013.6 68 9007.4 67 13347 8809 8911.55 68
JAN-JUL 10472.9 70 10472.9 70 10472.9 70 14922 10517 10473.14
JAN-SEP 11101.2 70 11107.4 70 11101.1 70 15900 11270 10994.16 70
OCT-SEP 12455.0 70 12461.2 70 12454.9 70 17911
COLUMBIA - AT INTL BOUNDARY APR-AUG 42185.3 79 42185.3 79 42185.3 79 53664 39674 42218.02
APR-JUL 37419.7 77 37419.7 77 37419.7 77 48307 34884 37452.43
APR-SEP 44957.4 79 44997.3 79 44950.0 79 56951 42785 44033.36 79
JAN-JUL 43531.0 79 43531.0 79 43531.0 79 55223 42323 43551.28
JAN-SEP 51068.6 80 51108.6 80 51061.2 80 63866 50224 50132.21 80
OCT-SEP 58904.0 82 58944.0 82 58896.6 82 71709
KETTLE - AT LAURIER APR-AUG 1667.0 86 1667.0 86 1667.0 86 1928 1413 1670.14
APR-JUL 1642.9 87 1642.9 87 1642.9 87 1886 1388 1646.01
APR-SEP 1679.5 86 1679.7 86 1679.5 86 1954 1430 1677.29 86
JAN-JUL 1797.3 87 1797.3 87 1797.3 87 2058 1732 1797.53
JAN-SEP 1833.8 86 1834.1 86 1833.8 86 2125 1775 1828.81 86
OCT-SEP 1913.4 85 1913.6 85 1913.4 85 2247
NF COEUR D ALENE - AT ENAVILLE APR-AUG 459.3 63 459.3 63 459.3 63 727 378 462.11
APR-JUL 447.2 63 447.2 63 447.2 63 708 363 450.02
APR-SEP 468.7 63 469.3 63 468.7 63 743 392 467.35 63
JAN-JUL 830.1 74 830.1 74 830.1 74 1129 788 831.04
JAN-SEP 851.6 73 852.2 73 851.6 73 1164 817 848.37 73
OCT-SEP 965.4 73 966.0 73 965.4 73 1322
ST JOE - AT CALDER APR-AUG 743.0 67 743.0 67 743.0 67 1112 692 745.31
APR-JUL 719.3 67 719.3 67 719.3 67 1076 663 721.70
APR-SEP 761.5 67 761.6 67 761.5 67 1138 715 755.91 67
JAN-JUL 1019.5 72 1019.5 72 1019.5 72 1415 965 1020.00
JAN-SEP 1061.7 72 1061.7 72 1061.7 72 1477 1017 1054.21 72
OCT-SEP 1167.0 71 1167.0 71 1167.0 71 1636
COEUR D ALENE - COEUR D ALENE LAKE APR-AUG 1475.0 60 1475.0 60 1475.0 60 2470 1309 1484.23
APR-JUL 1463.5 60 1463.5 60 1463.5 60 2428 1287 1472.64
APR-SEP 1493.6 60 1493.7 60 1493.6 60 2504 1336 1490.30 60
JAN-JUL 2713.8 70 2713.8 70 2713.8 70 3868 2557 2716.86
JAN-SEP 2744.0 70 2744.1 70 2744.0 70 3945 2606 2734.52 70
OCT-SEP 3152.8 71 3152.9 71 3152.8 71 4461
---------------------Forecast --------------------- ----------Runoff-----------
River Basin Period Probable % Maximum % Minimum % Average PrevYR CurYR %
SPOKANE - AT SPOKANE APR-AUG 1544.3 61 1544.3 61 1544.3 61 2540 1374 1552.94
APR-JUL 1517.0 61 1517.0 61 1517.0 61 2475 1338 1525.63
APR-SEP 1565.3 61 1565.4 61 1565.3 61 2587 1402 1560.03 61
JAN-JUL 2775.4 71 2775.4 71 2775.4 71 3926 2601 2778.27
JAN-SEP 2823.7 70 2823.8 70 2823.7 70 4038 2665 2812.67 70
OCT-SEP 3263.7 71 3263.8 71 3263.7 71 4584
SPOKANE - AT LONGLAKE APR-AUG 1696.0 60 1696.0 60 1696.0 60 2817 1538 1705.33
APR-JUL 1639.6 60 1639.6 60 1639.6 60 2714 1470 1648.96
APR-SEP 1752.0 60 1752.2 60 1752.0 60 2901 1595 1731.29 60
JAN-JUL 3081.1 70 3081.1 70 3081.1 70 4433 2912 3084.47
JAN-SEP 3193.5 69 3193.7 69 3193.5 69 4619 3038 3166.80 69
OCT-SEP 3734.5 71 3734.7 71 3734.5 71 5295
COLUMBIA - GRAND COULEE DAM APR-AUG 45412.9 78 45412.9 78 45412.9 78 58186 42426 45447.93
APR-JUL 40703.0 77 40703.0 77 40703.0 77 52774 37633 40738.05
APR-SEP 48188.0 78 48227.7 78 48180.6 78 61483 45518 47237.76 79
JAN-JUL 48434.6 78 48434.6 78 48434.6 78 61749 47073 48445.25
JAN-SEP 55919.6 79 55959.3 79 55912.2 79 70457 54958 54944.96 79
OCT-SEP 64217.6 81 64257.3 82 64210.2 81 78842
SIMILKAMEEN - NEAR HEDLEY APR-AUG 463.3 47 463.3 47 463.3 47 984 576 464.15
APR-JUL 453.1 47 453.1 47 453.1 47 956 557 453.92
APR-SEP 471.9 47 472.0 47 471.9 47 1004 588 468.13 47
JAN-JUL 542.9 50 542.9 50 542.9 50 1078 668 543.09
JAN-SEP 561.7 50 561.8 50 561.7 50 1126 699 557.30 50
OCT-SEP 636.8 51 636.9 51 636.8 51 1257
SIMILKAMEEN - NEAR NIGHTHAWK APR-AUG 663.3 50 663.3 50 663.3 50 1335 784 664.38
APR-JUL 645.0 50 645.0 50 645.0 50 1286 754 645.99
APR-SEP 675.4 49 675.4 49 675.4 49 1366 804 670.73 50
JAN-JUL 744.5 52 744.5 52 744.5 52 1443 896 744.74
JAN-SEP 774.9 51 775.0 51 774.9 51 1522 946 769.48 51
OCT-SEP 873.4 52 873.5 52 873.4 52 1692
OKANOGAN - NEAR TONASKET APR-AUG 854.2 52 854.2 52 854.2 52 1656 905 855.46
APR-JUL 813.4 52 813.4 52 813.4 52 1566 856 814.61
APR-SEP 888.3 52 888.3 52 888.3 52 1720 950 874.51 52
JAN-JUL 976.5 53 976.5 53 976.5 53 1832 1068 977.01
JAN-SEP 1051.5 53 1051.5 53 1051.5 53 1986 1162 1036.91 53
OCT-SEP 1222.2 55 1222.3 55 1222.2 55 2238
---------------------Forecast --------------------- ----------Runoff-----------
River Basin Period Probable % Maximum % Minimum % Average PrevYR CurYR %
METHOW - NEAR PATEROS APR-AUG 678.4 72 678.4 72 678.4 72 942 665 679.42
APR-JUL 657.8 73 657.8 73 657.8 73 904 641 658.82
APR-SEP 694.8 72 694.8 72 694.8 72 965 683 688.48 72
JAN-JUL 744.1 74 744.1 74 744.1 74 1001 793 744.28
JAN-SEP 781.1 74 781.1 74 781.1 74 1063 836 773.94 73
OCT-SEP 842.6 72 842.7 72 842.6 72 1162
STEHEKIN - AT STEHEKIN APR-AUG 557.5 72 557.5 72 557.5 72 778 531 558.53
APR-JUL 520.8 73 520.8 73 520.8 73 710 491 521.76
APR-SEP 580.2 71 580.9 71 580.2 71 814 554 573.00 72
JAN-JUL 612.1 76 612.1 76 612.1 76 809 616 612.27
JAN-SEP 671.6 74 672.3 74 671.5 74 913 679 663.51 74
OCT-SEP 750.7 72 751.4 72 750.6 72 1046
CHELAN - LAKE CHELAN DAM APR-AUG 766.9 70 766.9 70 766.9 70 1102 724 772.20
APR-JUL 727.1 71 727.1 71 727.1 71 1029 676 732.21
APR-SEP 791.4 69 792.4 70 791.3 69 1139 743 788.28 70
JAN-JUL 885.1 73 885.1 73 885.1 73 1217 901 885.60
JAN-SEP 949.4 72 950.5 72 949.4 72 1326 968 941.67 72
OCT-SEP 1067.2 70 1068.3 70 1067.2 70 1518
WENATCHEE - AT PESHASTIN APR-AUG 1079.1 74 1079.1 74 1079.1 74 1454 955 1081.81
APR-JUL 1043.6 76 1043.6 76 1043.6 76 1379 914 1046.31
APR-SEP 1102.1 74 1102.1 74 1102.1 74 1496 981 1095.63 74
JAN-JUL 1336.0 77 1336.0 77 1336.0 77 1726 1239 1336.56
JAN-SEP 1394.4 76 1394.4 76 1394.4 76 1842 1307 1385.88 76
OCT-SEP 1554.1 71 1554.1 71 1554.1 71 2175
COLUMBIA - BLO ROCK ISLAND DAM APR-AUG 49101.1 77 49101.1 77 49101.1 77 64028 45464 49149.96
APR-JUL 44262.6 76 44262.6 76 44262.6 76 58256 40631 44311.43
APR-SEP 51966.5 77 52007.8 77 51959.2 77 67524 48596 50976.58 77
JAN-JUL 52875.1 77 52875.1 77 52875.1 77 68440 51145 52894.47
JAN-SEP 60579.1 78 60620.3 78 60571.7 78 77708 59110 59559.62 78
OCT-SEP 69326.8 80 69368.1 80 69319.4 80 87167
COLUMBIA - BLO PRIEST RAPIDS DAM APR-AUG 49691.8 77 49691.8 77 49691.8 77 64656 45355 49742.91
APR-JUL 44853.1 76 44853.1 76 44853.1 76 58905 40429 44904.14
APR-SEP 52609.5 77 52650.4 77 52602.1 77 68162 48518 51613.60 77
JAN-JUL 53726.1 77 53726.1 77 53726.1 77 69359 51017 53727.06
JAN-SEP 61482.5 78 61523.5 78 61475.1 78 78616 59106 60436.52 78
OCT-SEP 70569.1 80 70610.1 80 70561.7 80 88197
---------------------Forecast --------------------- ----------Runoff-----------
River Basin Period Probable % Maximum % Minimum % Average PrevYR CurYR %
YAKIMA - NEAR MARTIN APR-AUG 90.4 73 90.4 73 90.4 73 124 101 91.80
APR-JUL 87.9 75 87.9 75 87.9 75 118 96 88.11
APR-SEP 91.5 71 91.9 71 91.5 71 129 104 91.69 72
JAN-JUL 143.3 81 143.3 81 143.3 81 176 145 143.52
JAN-SEP 146.9 78 147.3 78 146.9 78 188 152 147.10 79
OCT-SEP 188.7 76 189.0 76 188.7 76 249
KACHESS - NEAR EASTON APR-AUG 79.7 74 79.7 74 79.7 74 108 78 79.90
APR-JUL 74.4 72 74.4 72 74.4 72 104 74 74.64
APR-SEP 83.5 73 83.6 73 83.5 73 114 85 82.47 74
JAN-JUL 122.8 78 122.8 78 122.8 78 158 118 122.97
JAN-SEP 131.8 78 131.9 78 131.8 78 168 129 130.80 79
OCT-SEP 161.6 74 161.8 74 161.6 74 218
CLE ELUM - NEAR ROSLYN APR-AUG 289.5 71 289.5 71 289.5 71 407 285 290.31
APR-JUL 273.6 71 273.6 71 273.6 71 386 267 274.40
APR-SEP 295.1 70 295.2 70 295.1 70 419 290 293.32 71
JAN-JUL 404.7 79 404.7 79 404.7 79 512 391 405.01
JAN-SEP 426.2 78 426.3 78 426.2 78 545 413 423.93 78
OCT-SEP 499.5 74 499.7 74 499.5 74 672
YAKIMA - NEAR HORLICK APR-AUG 620.7 68 620.7 68 620.7 68 916 628 623.42
APR-JUL 599.6 68 599.6 68 599.6 68 876 599 601.99
APR-SEP 651.1 68 651.8 68 651.1 68 962 651 640.52 68
JAN-JUL 1003.6 77 1003.6 77 1003.6 77 1311 989 1004.71
JAN-SEP 1055.1 75 1055.8 76 1055.1 75 1398 1041 1043.24 76
OCT-SEP 1259.7 72 1260.4 72 1259.7 72 1746
BUMPING - BELOW BUMPING DAM APR-AUG 89.5 74 89.5 74 89.5 74 120 85 89.73
APR-JUL 86.9 76 86.9 76 86.9 76 115 82 87.21
APR-SEP 91.5 73 91.6 74 91.5 73 125 88 90.83 74
JAN-JUL 122.2 77 122.2 77 122.2 77 158 123 122.29
JAN-SEP 126.8 76 126.9 76 126.8 76 168 129 125.91 76
OCT-SEP 145.7 70 145.7 70 145.7 70 207
TIETON - AT TIETON DAM APR-AUG 160.2 77 160.2 77 160.2 77 209 155 160.53
APR-JUL 146.4 77 146.4 77 146.4 77 191 141 146.72
APR-SEP 168.0 75 168.3 75 167.8 75 225 171 161.44 74
JAN-JUL 216.6 80 216.6 80 216.6 80 271 211 216.71
JAN-SEP 238.2 78 238.4 78 238.0 78 305 241 231.43 78
OCT-SEP 272.0 73 272.2 73 271.8 73 372
---------------------Forecast --------------------- ----------Runoff-----------
River Basin Period Probable % Maximum % Minimum % Average PrevYR CurYR %
NACHES - NEAR NACHES APR-AUG 582.0 75 582.0 75 582.0 75 773 510 584.04
APR-JUL 564.3 77 564.3 77 564.3 77 737 487 566.40
APR-SEP 589.5 73 589.9 73 589.3 73 807 547 584.63 74
JAN-JUL 789.4 77 789.4 77 789.4 77 1030 742 789.73
JAN-SEP 814.5 74 815.0 74 814.3 74 1100 802 807.96 74
OCT-SEP 901.0 69 901.4 70 900.8 69 1297
YAKIMA - NEAR PARKER APR-AUG 1222.9 68 1222.9 68 1222.9 68 1804 1200 1228.01
APR-JUL 1182.6 69 1182.6 69 1182.6 69 1721 1136 1187.71
APR-SEP 1273.8 67 1274.7 67 1273.5 67 1899 1256 1248.63 67
JAN-JUL 1950.2 75 1950.2 75 1950.2 75 2596 1906 1952.01
JAN-SEP 2041.4 74 2042.3 74 2041.1 74 2774 2027 2012.93 74
OCT-SEP 2403.6 71 2404.6 71 2403.3 71 3404
YAKIMA - AT KIONA APR-AUG 585.4 56 585.4 56 585.4 56 1043 567 589.43
APR-JUL 525.9 55 525.9 55 525.9 55 952 479 529.99
APR-SEP 656.9 57 657.0 57 656.9 57 1149 664 624.93 56
JAN-JUL 1148.3 64 1148.3 64 1148.3 64 1785 1225 1149.96
JAN-SEP 1279.2 65 1279.4 65 1279.2 65 1982 1410 1244.90 64
OCT-SEP 1591.1 63 1591.3 63 1591.1 63 2516
SNAKE - JACKSON LAKE AT DAM APR-AUG 560.4 69 560.4 69 560.4 69 816 645 560.63
APR-JUL 536.9 70 536.9 70 536.9 70 771 622 537.17
APR-SEP 580.4 68 580.6 68 580.4 68 849 667 572.23 68
JAN-JUL 625.3 72 625.3 72 625.3 72 869 711 625.76
JAN-SEP 668.8 71 669.0 71 668.8 71 947 755 660.82 71
OCT-SEP 722.8 70 723.0 70 722.8 70 1039
GREYS - AB RES NR ALPINE APR-AUG 299.8 86 299.8 86 299.8 86 350 302 299.95
APR-JUL 278.2 87 278.2 87 278.2 87 321 278 278.40
APR-SEP 316.4 85 316.7 85 316.4 85 371 320 309.65 85
JAN-JUL 308.9 86 308.9 86 308.9 86 361 320 308.97
JAN-SEP 347.1 84 347.3 84 347.1 84 412 362 340.22 84
OCT-SEP 389.8 85 390.0 85 389.8 85 461
SALT - ABV PALISADES RES NR ETNA APR-AUG 262.2 78 262.2 78 262.2 78 335 361 262.54
APR-JUL 237.3 79 237.3 79 237.3 79 301 328 237.60
APR-SEP 290.6 79 290.9 79 290.5 79 368 393 278.19 78
JAN-JUL 316.5 83 316.5 83 316.5 83 383 414 316.73
JAN-SEP 369.8 82 370.1 82 369.7 82 450 479 357.32 82
OCT-SEP 463.8 85 464.1 85 463.8 85 545
---------------------Forecast --------------------- ----------Runoff-----------
River Basin Period Probable % Maximum % Minimum % Average PrevYR CurYR %
SNAKE - NEAR IRWIN APR-AUG 2680.2 80 2680.2 80 2680.2 80 3362 3117 2682.79
APR-JUL 2495.9 81 2495.9 81 2495.9 81 3097 2889 2498.41
APR-SEP 2844.6 80 2846.0 80 2844.5 80 3577 3311 2779.37 80
JAN-JUL 2925.1 82 2925.1 82 2925.1 82 3584 3351 2926.55
JAN-SEP 3273.9 81 3275.3 81 3273.8 81 4064 3773 3207.51 81
OCT-SEP 3731.2 81 3732.6 81 3731.1 81 4612
SNAKE - NEAR HEISE APR-AUG 2720.1 75 2720.1 75 2720.1 75 3605 3357 2722.89
APR-JUL 2508.4 76 2508.4 76 2508.4 76 3308 3127 2511.13
APR-SEP 2909.0 76 2910.4 76 2908.9 76 3849 3549 2833.31 76
JAN-JUL 3019.6 78 3019.6 78 3019.6 78 3871 3651 3021.31
JAN-SEP 3420.2 78 3421.6 78 3420.1 78 4413 4074 3343.49 77
OCT-SEP 3983.8 79 3985.2 79 3983.7 79 5050
FALL RIVER - NEAR CHESTER APR-AUG 259.0 74 259.0 74 259.0 74 352 280 259.26
APR-JUL 238.3 72 238.3 72 238.3 72 329 258 238.63
APR-SEP 280.1 74 280.5 74 280.1 74 377 306 271.47 74
JAN-JUL 317.8 76 317.8 76 317.8 76 416 346 318.00
JAN-SEP 359.6 78 359.9 78 359.6 78 464 394 350.84 77
OCT-SEP 443.6 79 444.0 79 443.6 79 559
HENRYS FORK - AT ST. ANTHONY APR-AUG 482.1 67 482.1 67 482.1 67 720 565 482.83
APR-JUL 420.8 66 420.8 66 420.8 66 639 506 421.44
APR-SEP 536.4 68 537.5 68 536.0 67 794 618 515.28 67
JAN-JUL 670.2 72 670.2 72 670.2 72 931 788 670.93
JAN-SEP 785.9 72 787.0 72 785.5 72 1086 901 764.77 72
OCT-SEP 1005.8 74 1006.9 74 1005.4 74 1358
TETON - NEAR ST. ANTHONY APR-AUG 311.9 76 311.9 76 311.9 76 412 419 312.20
APR-JUL 282.2 77 282.2 77 282.2 77 368 381 282.57
APR-SEP 334.2 75 334.5 75 334.2 75 447 450 325.10 75
JAN-JUL 354.3 79 354.3 79 354.3 79 448 453 354.50
JAN-SEP 406.2 77 406.5 77 406.2 77 526 523 397.03 78
OCT-SEP 484.3 79 484.6 79 484.3 79 614
HENRYS FORK - AT REXBURG APR-AUG 1038.8 68 1038.8 68 1038.8 68 1536 1221 1040.10
APR-JUL 922.3 69 922.3 69 922.3 69 1335 1080 923.62
APR-SEP 1134.0 66 1134.7 66 1133.0 66 1710 1340 1103.56 67
JAN-JUL 1252.8 73 1252.8 73 1252.8 73 1721 1403 1253.69
JAN-SEP 1464.4 70 1465.1 70 1463.5 70 2096 1664 1433.63 71
OCT-SEP 1866.1 74 1866.8 74 1865.1 74 2527
---------------------Forecast --------------------- ----------Runoff-----------
River Basin Period Probable % Maximum % Minimum % Average PrevYR CurYR %
WILLOW CREEK - NEAR RIRIE APR-AUG 36.3 61 36.3 61 36.3 61 59 106 36.35
APR-JUL 35.2 60 35.2 60 35.2 60 58 103 35.18
APR-SEP 36.9 61 37.0 61 36.9 61 60 108 36.77 61
JAN-JUL 46.5 67 46.5 67 46.5 67 69 116 46.48
JAN-SEP 48.2 68 48.3 68 48.2 68 71 121 48.07 68
OCT-SEP 57.3 73 57.4 73 57.3 73 79
SNAKE - NEAR SHELLEY APR-AUG 3264.4 72 3264.4 72 3264.4 72 4520 4113 3268.02
APR-JUL 3011.4 74 3011.4 74 3011.4 74 4090 3824 3015.08
APR-SEP 3540.3 72 3542.0 72 3540.0 72 4905 4378 3430.26 72
JAN-JUL 3822.5 79 3822.5 79 3822.5 79 4841 4707 3825.06
JAN-SEP 4351.4 77 4353.1 77 4351.1 77 5656 5261 4240.24 77
OCT-SEP 5171.7 78 5173.4 78 5171.5 78 6605
PORTNEUF - AT TOPAZ APR-AUG 55.0 83 55.0 83 55.0 83 66 91 55.16
APR-JUL 46.6 81 46.6 81 46.6 81 58 80 46.77
APR-SEP 61.1 85 61.3 85 61.1 85 72 99 58.85 84
JAN-JUL 74.0 89 74.0 89 74.0 89 83 114 74.03
JAN-SEP 88.4 90 88.6 90 88.4 90 98 133 86.11 90
OCT-SEP 113.0 96 113.1 96 113.0 96 118
SNAKE - AT AMERICAN FALLS DAM APR-AUG 1095.5 43 1095.5 43 1095.5 43 2531 2058 1217.39
APR-JUL 1243.9 49 1243.9 49 1243.9 49 2529 2142 1320.62
APR-SEP 1126.7 43 1128.2 43 1126.5 43 2624 2097 1204.34 47
JAN-JUL 2264.4 62 2264.4 62 2264.4 62 3651 3221 2340.63
JAN-SEP 2147.3 57 2148.8 57 2147.0 57 3745 3175 2224.35 60
OCT-SEP 3083.5 63 3085.0 63 3083.2 63 4883
SALMON FALLS CREEK - NR SAN JACINTO APR-AUG 35.1 53 35.1 53 35.1 53 66 75 35.28
APR-JUL 34.4 53 34.4 53 34.4 53 65 74 34.51
APR-SEP 37.0 55 37.1 55 37.0 54 68 77 36.27 54
JAN-JUL 52.9 61 52.9 61 52.9 61 87 95 52.92
JAN-SEP 55.5 62 55.6 62 55.5 62 90 97 54.68 61
OCT-SEP 64.9 65 65.0 65 64.9 65 100
BIG LOST - AT HOWELL RANCH NEAR CHILLY APR-AUG 108.9 66 108.9 66 108.9 66 165 130 108.94
APR-JUL 103.4 67 103.4 67 103.4 67 154 123 103.44
APR-SEP 113.2 66 113.3 66 113.2 66 172 136 111.46 66
JAN-JUL 117.2 70 117.2 70 117.2 70 168 141 117.27
JAN-SEP 127.0 68 127.1 68 127.0 68 186 153 125.29 68
OCT-SEP 141.8 69 141.9 69 141.8 69 204
---------------------Forecast --------------------- ----------Runoff-----------
River Basin Period Probable % Maximum % Minimum % Average PrevYR CurYR %
BIG LOST - MACKAY RESERVOIR NEAR MACKAY APR-AUG 79.3 63 79.3 63 79.3 63 126 111 79.32
APR-JUL 69.0 61 69.0 61 69.0 61 113 98 69.04
APR-SEP 87.5 64 87.5 64 87.5 64 136 122 84.69 64
JAN-JUL 94.0 66 94.0 66 94.0 66 141 129 94.04
JAN-SEP 112.5 68 112.5 68 112.5 68 164 153 109.69 68
OCT-SEP 142.8 73 142.9 73 142.8 73 197
BIG WOOD - AT HAILEY APR-AUG 164.1 67 164.1 67 164.1 67 246 186 164.27
APR-JUL 156.5 68 156.5 68 156.5 68 232 177 156.67
APR-SEP 170.5 66 170.6 66 170.5 66 257 195 167.90 66
JAN-JUL 184.6 70 184.6 70 184.6 70 263 212 184.68
JAN-SEP 198.6 69 198.7 69 198.6 69 289 230 195.91 69
OCT-SEP 225.2 70 225.3 70 225.2 70 321
BIG WOOD - MAGIC DAM APR-AUG 125.1 53 125.1 53 125.1 53 235 152 132.05
APR-JUL 117.5 52 117.5 52 117.5 52 227 146 123.46
APR-SEP 126.7 53 126.9 53 126.7 53 240 154 133.50 56
JAN-JUL 186.5 68 186.5 68 186.5 68 273 188 188.18
JAN-SEP 195.7 68 195.9 68 195.7 68 286 196 198.22 70
OCT-SEP 192.4 63 192.6 63 192.4 63 307
LITTLE WOOD - NEAR CAREY APR-AUG 33.6 45 33.6 45 33.6 45 74 57 33.93
APR-JUL 32.4 45 32.4 45 32.4 45 71 54 32.70
APR-SEP 34.1 45 34.2 45 34.1 45 77 59 34.23 45
JAN-JUL 44.5 50 44.5 50 44.5 50 89 71 44.54
JAN-SEP 46.2 49 46.4 49 46.2 49 94 76 46.07 50
OCT-SEP 53.6 51 53.7 52 53.6 51 104
SNAKE - AT KING HILL APR-AUG 2139.9 73 2139.9 73 2139.9 73 2925 2822 2142.76
APR-JUL 1748.4 71 1748.4 71 1748.4 71 2450 2374 1751.30
APR-SEP 2571.7 75 2578.9 76 2571.2 75 3412 3271 2381.69 74
JAN-JUL 2844.8 69 2844.8 69 2844.8 69 4129 3517 2847.94
JAN-SEP 3668.1 72 3675.3 72 3667.6 72 5090 4413 3478.33 71
OCT-SEP 4892.5 74 4899.7 74 4891.9 74 6626
BRUNEAU - NEAR HOT SPRINGS APR-AUG 117.6 65 117.6 65 117.6 65 180 216 117.93
APR-JUL 114.9 65 114.9 65 114.9 65 176 212 115.25
APR-SEP 120.3 66 120.4 66 120.3 66 183 218 119.45 66
JAN-JUL 165.3 76 165.3 76 165.3 76 217 257 165.35
JAN-SEP 170.6 76 170.8 76 170.6 76 225 263 169.55 76
OCT-SEP 184.2 76 184.3 76 184.2 76 242
---------------------Forecast --------------------- ----------Runoff-----------
River Basin Period Probable % Maximum % Minimum % Average PrevYR CurYR %
SNAKE - BELOW SWAN FALLS APR-AUG 1909.4 68 1909.4 68 1909.4 68 2812 2793 1913.03
APR-JUL 1584.5 66 1584.5 66 1584.5 66 2405 2440 1588.09
APR-SEP 2313.7 71 2316.2 71 2313.6 71 3258 3193 2130.13 69
JAN-JUL 2794.2 67 2794.2 67 2794.2 67 4166 3685 2797.64
JAN-SEP 3523.5 70 3526.0 70 3523.4 70 5020 4438 3339.68 69
OCT-SEP 4794.8 73 4797.3 73 4794.7 73 6584
OWYHEE - OWYHEE DAM APR-AUG 226.7 71 226.7 71 226.7 71 321 595 228.10
APR-JUL 209.8 68 209.8 68 209.8 68 307 577 211.26
APR-SEP 240.7 72 241.2 72 240.7 72 336 611 236.98 72
JAN-JUL 597.0 109 597.0 109 597.0 109 547 860 597.34
JAN-SEP 627.9 109 628.4 109 627.9 109 575 894 623.06 109
OCT-SEP 687.4 107 687.8 107 687.3 107 641
SF BOISE - ANDERSON RANCH DAM APR-AUG 428.8 89 428.8 89 428.8 89 480 375 429.45
APR-JUL 409.7 89 409.7 89 409.7 89 462 356 410.39
APR-SEP 443.5 90 443.7 90 443.5 90 495 389 437.41 89
JAN-JUL 488.4 89 488.4 89 488.4 89 550 434 488.55
JAN-SEP 522.2 90 522.4 90 522.2 90 583 468 515.57 89
OCT-SEP 565.9 89 566.1 89 565.9 89 637
BOISE - LUCKY PEAK DAM APR-AUG 1160.8 90 1160.8 90 1160.8 90 1284 1037 1163.04
APR-JUL 1118.7 91 1118.7 91 1118.7 91 1232 1002 1120.97
APR-SEP 1199.2 90 1199.6 90 1199.1 90 1329 1076 1184.55 90
JAN-JUL 1439.4 92 1439.4 92 1439.4 92 1566 1280 1439.90
JAN-SEP 1519.9 91 1520.3 91 1519.8 91 1663 1354 1503.48 91
OCT-SEP 1642.1 90 1642.5 90 1642.0 90 1829
BOISE - NEAR PARMA APR-AUG 386.9 73 386.9 73 386.9 73 531 492 389.31
APR-JUL 348.5 72 348.5 72 348.5 72 486 455 350.96
APR-SEP 439.0 75 439.2 75 438.9 75 584 546 418.35 74
JAN-JUL 619.7 81 619.7 81 619.7 81 761 632 620.12
JAN-SEP 710.2 83 710.4 83 710.1 83 859 723 687.51 82
OCT-SEP 867.4 85 867.6 85 867.3 85 1023
MALHEUR - NEAR DREWSEY APR-AUG 114.5 179 114.5 179 114.5 179 64 74 115.56
APR-JUL 113.8 179 113.8 179 113.8 179 64 74 114.82
APR-SEP 115.6 178 115.7 178 115.6 178 65 75 116.12 180
JAN-JUL 264.2 228 264.2 228 264.2 228 116 154 264.29
JAN-SEP 266.0 227 266.0 227 266.0 227 117 155 265.59 227
OCT-SEP 286.2 219 286.2 219 286.2 219 130
---------------------Forecast --------------------- ----------Runoff-----------
River Basin Period Probable % Maximum % Minimum % Average PrevYR CurYR %
NF MALHEUR - AT BEULAH APR-AUG 75.6 134 75.6 134 75.6 134 57 52 75.98
APR-JUL 73.2 136 73.2 136 73.2 136 54 50 73.60
APR-SEP 77.9 131 77.9 131 77.8 131 59 54 77.08 132
JAN-JUL 137.7 165 137.7 165 137.7 165 84 80 137.77
JAN-SEP 142.3 160 142.3 160 142.2 159 89 85 141.25 160
OCT-SEP 155.3 154 155.3 154 155.2 154 101
DEADWOOD - BELOW DEADWOOD RES APR-AUG 128.2 98 128.2 98 128.2 98 131 104 128.43
APR-JUL 126.1 101 126.1 101 126.1 101 125 103 126.13
APR-SEP 131.3 97 131.4 97 131.3 97 135 108 130.21 98
JAN-JUL 141.6 99 141.6 99 141.6 99 143 119 141.65
JAN-SEP 146.9 96 147.0 96 146.9 96 153 124 145.73 96
OCT-SEP 160.7 96 160.8 96 160.7 96 168
NF PAYETTE - CASCADE DAM APR-AUG 451.1 96 451.1 96 451.1 96 470 368 451.93
APR-JUL 443.3 96 443.3 96 443.3 96 463 362 444.08
APR-SEP 459.1 94 460.4 95 459.1 94 487 389 455.75 95
JAN-JUL 553.0 96 553.0 96 553.0 96 576 465 553.71
JAN-SEP 568.9 95 570.2 95 568.8 95 600 492 565.38 95
OCT-SEP 645.6 94 646.9 94 645.5 94 685
PAYETTE - NEAR HORSESHOE BEND APR-AUG 1564.3 102 1564.3 102 1564.3 102 1540 1274 1567.04
APR-JUL 1512.3 102 1512.3 102 1512.3 102 1484 1233 1515.00
APR-SEP 1613.0 101 1614.5 101 1612.8 101 1597 1329 1594.21 101
JAN-JUL 1891.3 102 1891.3 102 1891.3 102 1854 1548 1892.30
JAN-SEP 1992.0 101 1993.5 101 1991.9 101 1968 1644 1971.51 101
OCT-SEP 2203.2 100 2204.7 100 2203.0 100 2208
PAYETTE - NEAR EMMETT APR-AUG 1287.9 101 1287.9 101 1287.9 101 1277 1122 1291.24
APR-JUL 1167.8 99 1167.8 99 1167.8 99 1179 1025 1171.16
APR-SEP 1334.1 101 1334.5 101 1334.0 101 1325 1159 1316.48 101
JAN-JUL 1641.6 103 1641.6 103 1641.6 103 1589 1310 1642.30
JAN-SEP 1807.9 104 1808.3 104 1807.9 104 1736 1444 1787.62 104
OCT-SEP 1977.9 102 1978.3 102 1977.8 102 1947
WEISER - NEAR WEISER APR-AUG 370.9 98 370.9 98 370.9 98 380 294 372.80
APR-JUL 356.8 98 356.8 98 356.8 98 365 281 358.63
APR-SEP 380.4 98 380.5 98 380.4 98 389 302 379.06 98
JAN-JUL 756.1 117 756.1 117 756.1 117 645 477 756.81
JAN-SEP 779.7 116 779.8 116 779.7 116 669 498 777.24 117
OCT-SEP 868.0 119 868.1 120 868.0 119 726
---------------------Forecast --------------------- ----------Runoff-----------
River Basin Period Probable % Maximum % Minimum % Average PrevYR CurYR %
SNAKE - AT WEISER APR-AUG 4330.4 82 4330.4 82 4330.4 82 5311 5263 4345.79
APR-JUL 3801.1 81 3801.1 81 3801.1 81 4718 4713 3816.54
APR-SEP 4941.9 83 4942.7 83 4941.6 83 5956 5850 4677.59 82
JAN-JUL 6883.4 89 6883.4 89 6883.4 89 7719 6876 6890.08
JAN-SEP 8024.2 90 8025.0 90 8023.9 90 8957 8013 7751.13 89
OCT-SEP 9928.8 89 9929.7 89 9928.6 89 11199
BURNT - Unity Dam & Burnt RVR NR Hereford APR-AUG 37.8 125 37.8 125 37.8 125 30 33 38.07
APR-JUL 37.5 126 37.5 126 37.5 126 30 31 37.76
APR-SEP 39.3 127 39.3 127 39.3 127 31 34 38.68 126
JAN-JUL 70.3 140 70.3 140 70.3 140 50 56 70.38
JAN-SEP 72.1 140 72.1 140 72.1 140 51 58 71.30 139
OCT-SEP 78.5 136 78.5 136 78.5 136 58
EAGLE CREEK - ABOVE SKULL CK APR-AUG 184.4 109 184.4 109 184.4 109 169 129 184.57
APR-JUL 177.4 110 177.4 110 177.4 110 161 124 177.57
APR-SEP 189.7 109 189.7 109 189.7 109 174 133 187.76 109
JAN-JUL 205.4 110 205.4 110 205.4 110 188 149 205.47
JAN-SEP 217.8 108 217.8 108 217.8 108 201 159 215.66 109
OCT-SEP 231.4 105 231.4 105 231.4 105 221
SNAKE - BROWNLEE DAM APR-AUG 4796.4 84 4796.4 84 4796.4 84 5736 5610 4812.06
APR-JUL 4251.9 83 4251.9 83 4251.9 83 5125 5054 4267.49
APR-SEP 5432.8 85 5433.5 85 5432.5 85 6398 6226 5151.05 84
JAN-JUL 7640.9 92 7640.9 92 7640.9 92 8326 7488 7650.07
JAN-SEP 8821.8 92 8822.5 92 8821.5 92 9600 8660 8533.63 91
OCT-SEP 10836.1 91 10836.9 91 10835.9 91 11906
SNAKE - AT HELLS CANYON DAM APR-AUG 5019.3 83 5019.3 83 5019.3 83 6046 5743 5035.69
APR-JUL 4469.8 82 4469.8 82 4469.8 82 5429 5183 4486.20
APR-SEP 5658.8 84 5659.5 84 5658.4 84 6725 6355 5377.85 83
JAN-JUL 7961.6 90 7961.6 90 7961.6 90 8834 7695 7970.02
JAN-SEP 9150.6 90 9151.4 90 9150.3 90 10130 8867 8861.67 90
OCT-SEP 11205.2 90 11205.9 90 11204.9 90 12500
IMNAHA - AT IMNAHA APR-AUG 235.0 87 235.0 87 235.0 87 269 195 235.33
APR-JUL 225.5 87 225.5 87 225.5 87 258 188 225.89
APR-SEP 241.7 87 241.7 87 241.7 87 277 201 239.19 87
JAN-JUL 282.5 90 282.5 90 282.5 90 315 247 282.63
JAN-SEP 298.7 89 298.7 89 298.7 89 334 260 295.93 89
OCT-SEP 328.4 90 328.4 90 328.4 90 366
---------------------Forecast --------------------- ----------Runoff-----------
River Basin Period Probable % Maximum % Minimum % Average PrevYR CurYR %
SALMON - AT SALMON APR-AUG 695.1 80 695.1 80 695.1 80 873 632 695.77
APR-JUL 646.6 80 646.6 80 646.6 80 810 590 647.26
APR-SEP 745.9 80 746.3 80 745.8 80 929 672 723.39 80
JAN-JUL 836.5 83 836.5 83 836.5 83 1008 795 836.93
JAN-SEP 935.8 83 936.1 83 935.7 83 1126 877 913.06 83
OCT-SEP 1120.4 83 1120.8 83 1120.3 83 1346
SALMON - AT WHITEBIRD APR-AUG 4956.4 84 4956.4 84 4956.4 84 5917 4796 4961.48
APR-JUL 4725.3 84 4725.3 84 4725.3 84 5614 4561 4730.41
APR-SEP 5161.4 84 5162.0 84 5161.2 84 6158 4999 5077.29 84
JAN-JUL 5598.6 85 5598.6 85 5598.6 85 6555 5447 5600.55
JAN-SEP 6034.7 85 6035.3 85 6034.5 85 7099 5886 5947.43 85
OCT-SEP 6736.7 85 6737.3 85 6736.5 85 7958
GRANDE RONDE - NEAR PERRY APR-AUG 81.8 47 81.8 47 81.8 47 174 100 82.47
APR-JUL 81.3 47 81.3 47 81.3 47 172 99 81.99
APR-SEP 82.4 47 82.5 47 82.4 47 176 101 82.80 47
JAN-JUL 205.2 76 205.2 76 205.2 76 271 197 205.36
JAN-SEP 206.3 75 206.4 75 206.3 75 274 199 206.17 75
OCT-SEP 220.5 76 220.6 76 220.5 76 291
LOSTINE - NR LOSTINE APR-AUG 87.9 78 87.9 78 87.9 78 113 83 87.99
APR-JUL 84.5 78 84.5 78 84.5 78 108 80 84.60
APR-SEP 89.8 78 89.8 78 89.8 78 116 85 89.18 78
JAN-JUL 93.4 79 93.4 79 93.4 79 119 92 93.43
JAN-SEP 98.6 78 98.6 78 98.6 78 126 97 98.01 78
OCT-SEP 103.7 76 103.7 76 103.7 76 137
GRANDE RONDE - TROY APR-AUG 931.9 72 931.9 72 931.9 72 1293 929 935.82
APR-JUL 901.7 72 901.7 72 901.7 72 1251 899 905.63
APR-SEP 961.9 72 961.9 72 961.9 72 1331 958 951.88 72
JAN-JUL 1555.4 83 1555.4 83 1555.4 83 1872 1483 1556.73
JAN-SEP 1615.6 83 1615.7 83 1615.6 83 1952 1542 1602.98 83
OCT-SEP 1788.8 82 1788.9 82 1788.8 82 2170
SNAKE - LOWER GRANITE DAM APR-AUG 16622.8 79 16622.8 79 16622.8 79 21121 17269 16673.62
APR-JUL 15758.5 79 15758.5 79 15758.5 79 19946 16378 15809.28
APR-SEP 17575.0 79 17578.2 79 17574.4 79 22232 18205 17184.97 79
JAN-JUL 22879.0 83 22879.0 83 22879.0 83 27450 22244 22893.08
JAN-SEP 24695.5 83 24698.8 83 24695.0 83 29736 24072 24268.77 83
OCT-SEP 28274.3 82 28277.5 82 28273.7 82 34287
---------------------Forecast --------------------- ----------Runoff-----------
River Basin Period Probable % Maximum % Minimum % Average PrevYR CurYR %
CLEARWATER - AT OROFINO APR-AUG 3499.1 77 3499.1 77 3499.1 77 4539 3674 3507.00
APR-JUL 3414.5 77 3414.5 77 3414.5 77 4417 3580 3422.49
APR-SEP 3567.1 77 3568.3 77 3567.1 77 4632 3759 3546.34 77
JAN-JUL 4450.9 80 4450.9 80 4450.9 80 5531 4575 4452.59
JAN-SEP 4603.5 80 4604.7 80 4603.4 80 5745 4755 4576.44 80
OCT-SEP 4975.7 79 4976.9 79 4975.7 79 6313
NF CLEARWATER - DWORSHAK DAM APR-AUG 1808.0 71 1808.0 71 1808.0 71 2554 1628 1819.01
APR-JUL 1757.4 71 1757.4 71 1757.4 71 2474 1571 1768.41
APR-SEP 1845.8 70 1847.7 71 1845.8 70 2620 1685 1838.97 71
JAN-JUL 2617.8 77 2617.8 77 2617.8 77 3397 2281 2619.59
JAN-SEP 2706.2 76 2708.2 76 2706.2 76 3543 2395 2690.15 77
OCT-SEP 3046.6 76 3048.5 76 3046.6 76 3998
CLEARWATER - AT SPALDING APR-AUG 5421.3 74 5421.3 74 5421.3 74 7319 5367 5441.46
APR-JUL 5274.7 74 5274.7 74 5274.7 74 7117 5205 5294.83
APR-SEP 5539.5 74 5542.1 74 5539.5 74 7481 5523 5508.84 74
JAN-JUL 7399.0 79 7399.0 79 7399.0 79 9421 7075 7402.91
JAN-SEP 7663.8 78 7666.4 78 7663.8 78 9785 7393 7616.92 78
OCT-SEP 8428.0 78 8430.6 78 8427.9 78 10841
COLUMBIA - MCNARY DAM APR-AUG 65556.1 74 65556.1 74 65556.1 74 88088 62451 65657.40
APR-JUL 59956.1 74 59956.1 74 59956.1 74 80726 56877 60057.38
APR-SEP 69545.1 75 69586.1 75 69536.6 75 92790 66757 68078.95 75
JAN-JUL 76695.4 77 76695.4 77 76695.4 77 99964 74344 76729.49
JAN-SEP 86284.5 77 86325.4 77 86276.0 77 112028 84224 84751.06 77
OCT-SEP 98940.1 78 98980.9 78 98931.5 78 126785
UMATILLA - NEAR GIBBON APR-AUG 54.1 68 54.1 68 54.1 68 80 49 54.37
APR-JUL 50.8 66 50.8 66 50.8 66 77 46 51.14
APR-SEP 57.3 69 57.3 70 57.3 69 82 51 56.24 69
JAN-JUL 130.3 90 130.3 90 130.3 90 145 107 130.48
JAN-SEP 136.7 91 136.8 91 136.7 91 150 112 135.58 91
OCT-SEP 157.8 91 157.8 91 157.8 91 174
UMATILLA - AT PENDLETON APR-AUG 87.2 56 87.2 56 87.2 56 155 88 88.08
APR-JUL 84.9 56 84.9 56 84.9 56 152 86 85.80
APR-SEP 89.4 57 89.4 57 89.4 57 158 91 89.31 57
JAN-JUL 280.5 86 280.5 86 280.5 86 326 245 281.01
JAN-SEP 284.9 86 284.9 86 284.9 86 331 249 284.52 86
OCT-SEP 339.4 89 339.5 89 339.4 89 380
---------------------Forecast --------------------- ----------Runoff-----------
River Basin Period Probable % Maximum % Minimum % Average PrevYR CurYR %
NF JOHN DAY - AT MONUMENT APR-AUG 496.2 89 496.2 89 496.2 89 558 441 499.05
APR-JUL 491.0 89 491.0 89 491.0 89 551 437 493.89
APR-SEP 502.1 89 502.2 89 502.1 89 564 445 502.16 89
JAN-JUL 1040.8 120 1040.8 120 1040.8 120 869 870 1042.01
JAN-SEP 1051.9 119 1052.0 119 1051.9 119 883 879 1050.28 119
OCT-SEP 1176.4 125 1176.6 125 1176.4 125 945
JOHN DAY - AT SERVICE CK APR-AUG 752.8 95 752.8 95 752.8 95 790 641 757.40
APR-JUL 743.9 95 743.9 95 743.9 95 781 636 748.49
APR-SEP 762.5 96 762.8 96 762.4 95 798 647 762.30 96
JAN-JUL 1626.8 129 1626.8 129 1626.8 129 1262 1369 1629.04
JAN-SEP 1645.5 129 1645.7 129 1645.4 129 1279 1380 1642.85 129
OCT-SEP 1844.2 132 1844.4 132 1844.1 132 1392
COLUMBIA - JOHN DAY DAM APR-AUG 67296.6 77 67296.6 77 67296.6 77 87643 64798 67400.92
APR-JUL 61738.3 77 61738.3 77 61738.3 77 80636 59056 61842.61
APR-SEP 71302.8 77 71343.6 77 71294.4 77 92354 68976 69800.81 77
JAN-JUL 80063.4 79 80063.4 79 80063.4 79 101178 77510 80095.33
JAN-SEP 89628.0 79 89668.7 79 89619.6 79 112896 87430 88053.53 79
OCT-SEP 102874.6 80 102915.3 80 102866.2 80 128295
DESCHUTES - AT MOODY NR BIGGS APR-AUG 1507.6 92 1507.6 92 1507.6 92 1637 1512 1513.06
APR-JUL 1253.5 92 1253.5 92 1253.5 92 1365 1245 1258.96
APR-SEP 1761.5 93 1761.5 93 1761.5 93 1902 1773 1658.38 92
JAN-JUL 2627.0 101 2627.0 101 2627.0 101 2590 2479 2630.99
JAN-SEP 3135.0 100 3135.1 100 3135.0 100 3127 3008 3030.41 100
OCT-SEP 4086.1 99 4086.1 99 4086.1 99 4118
COLUMBIA - THE DALLES DAM APR-AUG 67860.6 76 67860.6 76 67860.6 76 89196 65535 67993.28
APR-JUL 62139.5 76 62139.5 76 62139.5 76 81933 59555 62272.13
APR-SEP 72068.4 77 72109.1 77 72060.0 77 94166 69948 70518.56 77
JAN-JUL 81390.4 78 81390.4 78 81390.4 78 103714 78845 81427.77
JAN-SEP 91319.3 79 91360.0 79 91310.9 79 115946 89238 89674.20 79
OCT-SEP 105394.2 80 105435.0 80 105385.9 80 132314
COLUMBIA - BONNEVILLE DAM APR-AUG 67877.5 75 67877.5 75 67877.5 75 90174 65814 67995.45
APR-JUL 62095.8 75 62095.8 75 62095.8 75 82678 59803 62213.81
APR-SEP 72204.6 76 72245.6 76 72196.2 76 95202 70368 70602.58 76
JAN-JUL 82474.7 78 82474.7 78 82474.7 78 105246 81033 82522.58
JAN-SEP 92583.6 79 92624.5 79 92575.1 79 117770 91598 90911.35 79
OCT-SEP 107429.2 80 107470.1 80 107420.8 80 134527
---------------------Forecast --------------------- ----------Runoff-----------
River Basin Period Probable % Maximum % Minimum % Average PrevYR CurYR %
MCKENZIE - NEAR VIDA APR-AUG 887.2 81 887.2 81 887.2 81 1091 1058 891.46
APR-JUL 755.3 77 755.3 77 755.3 77 978 896 759.56
APR-SEP 990.1 83 990.9 83 990.1 83 1195 1214 953.07 83
JAN-JUL 1920.5 96 1920.5 96 1920.5 96 2001 2094 1924.27
JAN-SEP 2155.3 97 2156.1 97 2155.3 97 2219 2412 2117.78 97
OCT-SEP 2949.3 100 2950.1 100 2949.3 100 2951
NORTH SANTIAM - AT MEHAMA APR-AUG 497.9 62 497.9 62 497.9 62 802 722 500.81
APR-JUL 458.1 61 458.1 61 458.1 61 753 679 460.98
APR-SEP 534.5 63 536.2 63 534.4 63 855 762 522.95 63
JAN-JUL 1436.7 84 1436.7 84 1436.7 84 1703 1856 1440.31
JAN-SEP 1513.1 84 1514.8 84 1513.0 84 1805 1939 1502.28 84
OCT-SEP 2279.0 90 2280.7 90 2279.0 90 2522
SOUTH SANTIAM - AT WATERLOO APR-AUG 294.4 52 294.4 52 294.4 52 571 518 297.15
APR-JUL 284.2 51 284.2 51 284.2 51 558 506 287.01
APR-SEP 304.5 52 305.6 52 304.5 52 590 524 303.56 52
JAN-JUL 1265.6 87 1265.6 87 1265.6 87 1462 1609 1269.13
JAN-SEP 1285.9 86 1286.9 86 1285.8 86 1494 1627 1285.68 86
OCT-SEP 1964.0 92 1965.1 92 1964.0 92 2146
WILLAMETTE - AT SALEM APR-AUG 3168.1 70 3168.1 70 3168.1 70 4539 4216 3193.89
APR-JUL 2985.8 69 2985.8 69 2985.8 69 4324 4013 3011.62
APR-SEP 3351.6 71 3358.3 71 3351.6 71 4754 4397 3300.39 71
JAN-JUL 11299.2 99 11299.2 99 11299.2 99 11461 13126 11342.56
JAN-SEP 11665.0 98 11671.7 98 11664.9 98 11890 13511 11631.33 99
OCT-SEP 16675.5 102 16682.2 102 16675.5 102 16315
CLACKAMAS - AT ESTACADA APR-AUG 461.8 68 461.8 68 461.8 68 677 622 464.03
APR-JUL 423.5 68 423.5 68 423.5 68 624 574 425.69
APR-SEP 503.5 69 504.5 69 503.4 69 733 668 487.66 69
JAN-JUL 1105.2 82 1105.2 82 1105.2 82 1341 1413 1107.74
JAN-SEP 1185.2 82 1186.2 82 1185.2 82 1450 1507 1169.71 82
OCT-SEP 1700.9 86 1701.9 86 1700.8 86 1975
LEWIS - MERWIN DAM APR-AUG 710.0 73 710.0 73 710.0 73 969 940 714.10
APR-JUL 659.7 75 659.7 75 659.7 75 881 877 663.83
APR-SEP 750.3 69 752.9 70 750.3 69 1082 995 737.51 71
JAN-JUL 1795.0 83 1795.0 83 1795.0 83 2162 2261 1799.99
JAN-SEP 1885.7 80 1888.2 80 1885.7 80 2363 2379 1873.67 81
OCT-SEP 2887.9 85 2890.5 85 2887.9 85 3417
---------------------Forecast --------------------- ----------Runoff-----------
River Basin Period Probable % Maximum % Minimum % Average PrevYR CurYR %
COWLITZ - MAYFIELD RESERVOIR APR-AUG 1170.6 66 1170.6 66 1170.6 66 1765 1168 1174.56
APR-JUL 1083.8 66 1083.8 66 1083.8 66 1648 1071 1087.68
APR-SEP 1231.6 66 1233.9 66 1231.5 66 1864 1252 1209.17 66
JAN-JUL 2329.6 73 2329.6 73 2329.6 73 3204 2489 2335.79
JAN-SEP 2477.5 72 2479.7 72 2477.4 72 3420 2670 2457.28 73
OCT-SEP 3430.5 74 3432.8 74 3430.4 74 4624
COWLITZ - AT CASTLE ROCK APR-AUG 1502.6 64 1502.6 64 1502.6 64 2366 1657 1508.00
APR-JUL 1389.0 63 1389.0 63 1389.0 63 2213 1545 1394.37
APR-SEP 1583.3 63 1588.7 63 1583.2 63 2504 1748 1552.96 63
JAN-JUL 3326.8 72 3326.8 72 3326.8 72 4638 3925 3336.29
JAN-SEP 3521.1 71 3526.5 72 3521.0 71 4929 4128 3494.88 72
OCT-SEP 5055.4 75 5060.7 75 5055.2 75 6739
ROGUE - AT RAYGOLD APR-AUG 753.9 99 753.9 99 753.9 99 759 694 756.74
APR-JUL 678.0 99 678.0 99 678.0 99 687 622 680.85
APR-SEP 830.8 100 831.6 100 830.8 100 831 763 800.87 100
JAN-JUL 1827.1 127 1827.1 127 1827.1 127 1442 1541 1831.54
JAN-SEP 1979.8 125 1980.6 125 1979.8 125 1586 1682 1951.56 125
OCT-SEP 2579.2 127 2580.1 127 2579.2 127 2032
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