Northwest River Forecast Center
Water Supply Seasonal Forecasts
Ensemble Date: 2026-01-16 Issued Date: 2026-01-16
Water Year 2026
---------------------Forecast --------------------- ----------Runoff-----------
River Basin Period Probable % Maximum % Minimum % Average PrevYR CurYR %
SILVIES - NEAR BURNS APR-AUG 19.0 27 40.1 57 8.5 12 71 158
APR-JUL 19.0 27 40.1 57 8.5 12 70 156
APR-SEP 19.1 27 40.3 56 8.5 12 71 160
JAN-JUL 47.4 44 80.1 74 32.5 30 108 281 3.55 115
JAN-SEP 47.4 43 80.1 73 32.5 30 110 284 3.55 115
OCT-SEP 55.1 48 87.8 76 40.2 35 116
DONNER UND BLITZEN - NR FRENCHGLEN APR-AUG 37.9 63 62.8 104 19.1 32 60 77
APR-JUL 35.7 62 59.8 104 17.3 30 57 73
APR-SEP 40.0 64 65.5 105 20.9 33 63 80
JAN-JUL 53.2 72 83.0 112 37.7 51 74 114 2.26 101
JAN-SEP 57.5 73 88.4 111 41.5 52 79 121 2.26 101
OCT-SEP 67.8 77 98.7 112 51.8 59 88
DUNGENESS - NEAR SEQUIM APR-AUG 118.0 87 152.7 113 92.0 68 136 108
APR-JUL 107.6 89 136.8 113 83.2 69 121 100
APR-SEP 125.5 87 164.4 114 98.6 68 145 113
JAN-JUL 190.1 98 243.2 125 154.0 79 195 147 19.18 113
JAN-SEP 210.9 96 267.2 122 169.5 78 219 160 19.18 113
OCT-SEP 304.4 106 360.7 126 263.0 92 287
SKAGIT - NEAR CONCRETE APR-AUG 5087.1 92 6275.9 113 4309.8 78 5549 3966
APR-JUL 4569.4 92 5578.1 112 3861.7 78 4959 3545
APR-SEP 5536.6 93 6753.6 113 4606.6 77 5955 4236
JAN-JUL 7445.2 102 8526.5 116 6502.3 89 7334 5445 756.96 149
JAN-SEP 8371.9 101 9559.0 115 7358.3 88 8330 6136 756.96 149
OCT-SEP 12508.7 114 13695.8 125 11495.1 105 10972
COLUMBIA - MICA DAM APR-AUG 12583.0 113 14094.8 126 10870.9 97 11166 10191
APR-JUL 10000.2 110 11927.2 132 8138.9 90 9064 8132
APR-SEP 13766.6 112 15373.5 125 12115.1 99 12296 11509
JAN-JUL 10806.5 110 12742.7 129 8965.5 91 9850 8925 139.38 91
JAN-SEP 14573.0 111 16124.7 123 12831.9 98 13082 12302 139.38 91
OCT-SEP 15851.3 110 17402.9 120 14110.1 97 14472
COLUMBIA - REVELSTOKE DAM APR-AUG 17830.4 113 19702.2 125 15366.6 98 15746 14447
APR-JUL 14536.0 111 16916.3 130 12097.8 93 13046 11785
APR-SEP 19374.9 112 21482.3 125 16778.0 97 17242 16099
JAN-JUL 15717.3 111 18043.4 128 13245.6 94 14115 12936 229.96 111
JAN-SEP 20592.2 112 22718.1 124 17873.6 98 18311 17250 229.96 111
OCT-SEP 22562.5 111 24688.3 121 19843.9 98 20340
---------------------Forecast --------------------- ----------Runoff-----------
River Basin Period Probable % Maximum % Minimum % Average PrevYR CurYR %
COLUMBIA - ARROW LAKES (HUGH KEENLEYSIDE DAM)APR-AUG 25268.6 114 27851.4 126 21751.4 98 22135 20023
APR-JUL 21282.5 113 24394.6 130 17795.7 95 18779 16696
APR-SEP 27393.8 114 30381.9 126 23563.9 98 24059 22004
JAN-JUL 23445.5 113 26431.7 128 19825.4 96 20698 18826 437.30 121
JAN-SEP 29587.1 114 32553.9 125 25828.6 99 25978 24134 437.30 121
OCT-SEP 32607.9 112 35574.6 122 28849.3 99 29084
KOOTENAI - LIBBY DAM APR-AUG 6843.7 113 7933.1 130 5552.0 91 6080 4257
APR-JUL 6247.1 112 7304.4 131 5036.4 90 5570 3840
APR-SEP 7292.4 113 8340.2 130 5957.1 93 6429 4497
JAN-JUL 7165.5 115 8162.2 131 6022.9 97 6227 4314 188.03 163
JAN-SEP 8166.3 115 9179.7 130 6935.9 98 7086 4971 188.03 163
OCT-SEP 9114.4 114 10127.8 127 7884.0 99 7981
KOOTENAI - AT LEONIA APR-AUG 8150.2 110 9412.1 127 6612.0 89 7409 5183
APR-JUL 7560.4 110 8620.1 126 6077.7 89 6858 4741
APR-SEP 8564.0 110 9848.5 126 7159.4 92 7803 5446
JAN-JUL 8854.6 112 10011.2 127 7600.5 96 7877 5488 298.16 186
JAN-SEP 9837.9 112 11153.0 126 8559.2 97 8822 6194 298.16 186
OCT-SEP 11405.8 115 12720.8 128 10127.1 102 9923
MOYIE - AT EASTPORT APR-AUG 406.4 104 537.6 138 290.4 74 390 253
APR-JUL 396.6 104 522.5 137 281.6 74 382 246
APR-SEP 413.6 105 546.8 139 297.5 75 395 257
JAN-JUL 485.7 113 612.4 142 390.5 91 431 274 18.28 329
JAN-SEP 503.3 114 636.7 144 405.9 92 443 286 18.28 329
OCT-SEP 576.2 120 709.6 148 478.8 100 479
KOOTENAI - AT BONNERS FERRY APR-AUG 8803.0 109 10421.8 129 7169.5 89 8061 5650
APR-JUL 8213.6 110 9597.5 128 6614.2 88 7495 5174
APR-SEP 9215.7 109 10838.4 128 7690.6 91 8463 5941
JAN-JUL 9586.8 112 10984.3 128 8314.7 97 8596 5962 321.89 189
JAN-SEP 10716.9 112 12264.7 128 9307.1 97 9565 6729 321.89 189
OCT-SEP 12454.9 116 14002.7 131 11045.1 103 10724
DUNCAN - DUNCAN DAM APR-AUG 2258.4 111 2566.1 126 2039.3 100 2040 1744
APR-JUL 1914.8 112 2260.9 132 1697.4 99 1713 1455
APR-SEP 2429.7 109 2712.2 122 2186.4 98 2224 1928
JAN-JUL 2063.9 112 2417.9 131 1842.5 100 1849 1589 34.47 114
JAN-SEP 2583.6 109 2869.3 122 2326.0 99 2361 2062 34.47 114
OCT-SEP 2793.0 107 3078.7 118 2535.4 97 2620
---------------------Forecast --------------------- ----------Runoff-----------
River Basin Period Probable % Maximum % Minimum % Average PrevYR CurYR %
KOOTENAI - KOOTENAY L AT QUEENS BAY APR-AUG 16864.9 112 18835.9 125 13799.7 92 15052 10979
APR-JUL 15569.4 113 17204.2 124 12620.4 91 13836 10020
APR-SEP 17698.3 112 19775.8 125 14783.6 93 15842 11519
JAN-JUL 18015.1 114 19690.3 125 14849.7 94 15754 11492 490.02 158
JAN-SEP 20281.2 114 22214.1 125 17012.9 96 17761 12991 490.02 158
OCT-SEP 22932.6 115 24865.5 125 19664.4 99 19885
SLOCAN - NEAR CRESCENT VALLEY APR-AUG 2207.7 119 2533.3 137 1743.2 94 1850 1429
APR-JUL 2037.2 119 2327.3 136 1589.4 93 1708 1339
APR-SEP 2357.5 122 2689.2 139 1847.5 96 1933 1478
JAN-JUL 2238.9 118 2535.0 134 1789.1 95 1892 1494 49.10 155
JAN-SEP 2566.9 121 2878.6 136 2047.2 97 2116 1634 49.10 155
OCT-SEP 2762.8 117 3074.6 130 2243.1 95 2364
COLUMBIA - AT BIRCHBANK APR-AUG 44148.9 111 48489.2 122 37181.0 94 39736 32748
APR-JUL 38275.8 109 43720.4 125 32318.8 92 34960 28363
APR-SEP 47093.7 111 52792.1 124 39888.2 94 42578 35371
JAN-JUL 43617.7 111 48293.4 123 37194.2 95 39168 32229 1028.42 141
JAN-SEP 52428.1 112 57850.2 124 45520.4 97 46786 39237 1028.42 141
OCT-SEP 58335.2 111 63757.2 122 51427.3 98 52397
BLACKFOOT - NEAR BONNER APR-AUG 663.2 78 951.3 111 504.4 59 855 415
APR-JUL 619.2 76 898.4 111 471.5 58 811 390
APR-SEP 698.4 78 995.1 112 540.2 61 891 435
JAN-JUL 792.5 85 1086.8 116 658.5 70 937 474 34.02 184
JAN-SEP 867.5 85 1181.8 116 721.0 71 1017 519 34.02 184
OCT-SEP 998.1 89 1312.4 117 851.6 76 1126
CLARK FORK - ABOVE BLACKFOOT APR-AUG 637.6 100 987.0 155 461.4 72 637 380
APR-JUL 598.2 101 926.6 156 429.7 72 594 358
APR-SEP 684.1 101 1048.4 154 494.5 73 680 399
JAN-JUL 781.0 103 1103.7 146 589.9 78 756 483 32.39 124
JAN-SEP 868.4 103 1222.6 145 654.6 78 842 523 32.39 124
OCT-SEP 1012.2 102 1366.4 137 798.5 80 996
CLARK FORK - ABOVE MISSOULA APR-AUG 1349.0 90 1938.4 130 984.9 66 1492 795
APR-JUL 1268.0 90 1825.0 130 918.5 65 1405 748
APR-SEP 1424.6 91 2040.6 130 1061.9 68 1571 834
JAN-JUL 1603.2 95 2157.6 127 1262.6 75 1693 956 66.41 149
JAN-SEP 1772.5 95 2373.2 128 1406.0 76 1859 1042 66.41 149
OCT-SEP 2046.9 96 2647.6 125 1680.5 79 2122
---------------------Forecast --------------------- ----------Runoff-----------
River Basin Period Probable % Maximum % Minimum % Average PrevYR CurYR %
BITTERROOT - NEAR DARBY APR-AUG 483.9 97 635.2 128 327.6 66 497 323
APR-JUL 451.5 97 600.1 129 305.4 66 465 296
APR-SEP 506.7 98 661.0 127 346.3 67 519 339
JAN-JUL 508.5 98 662.9 127 364.5 70 521 342 13.27 166
JAN-SEP 563.0 98 721.5 125 409.6 71 575 384 13.27 166
OCT-SEP 626.1 100 784.6 126 472.8 76 624
BITTERROOT - NEAR MISSOULA APR-AUG 1228.3 99 1534.0 124 928.4 75 1241 812
APR-JUL 1173.2 99 1476.0 124 885.0 74 1191 777
APR-SEP 1279.3 99 1588.8 123 974.1 76 1289 843
JAN-JUL 1429.3 103 1835.7 133 1125.9 81 1385 942 56.22 190
JAN-SEP 1528.2 103 1954.1 132 1217.3 82 1484 1008 56.22 190
OCT-SEP 1810.7 109 2236.6 134 1499.7 90 1669
CLARK FORK - BELOW MISSOULA APR-AUG 2646.3 96 3533.0 128 2003.8 72 2767 1551
APR-JUL 2482.5 94 3345.7 127 1890.4 72 2630 1465
APR-SEP 2779.2 96 3690.5 128 2119.9 73 2893 1626
JAN-JUL 3096.4 99 3993.6 128 2413.2 77 3121 1838 117.31 157
JAN-SEP 3372.8 100 4349.8 129 2665.9 79 3384 1999 117.31 157
OCT-SEP 3921.3 102 4898.2 128 3214.4 84 3838
CLARK FORK - AT ST REGIS APR-AUG 3430.0 95 4576.0 127 2718.2 75 3610 2086
APR-JUL 3228.9 94 4332.7 126 2553.9 74 3429 1970
APR-SEP 3613.6 96 4777.4 127 2867.1 76 3771 2185
JAN-JUL 4088.6 99 5295.5 129 3339.8 81 4109 2467 183.15 183
JAN-SEP 4489.9 101 5713.6 128 3650.4 82 4451 2682 183.15 183
OCT-SEP 5290.3 105 6514.1 129 4450.8 88 5042
NF FLATHEAD - NEAR COLUMBIA FALLS APR-AUG 1545.9 91 1974.1 117 1213.7 72 1690 1231
APR-JUL 1456.6 91 1871.0 117 1145.4 72 1600 1157
APR-SEP 1612.4 92 2039.5 117 1265.6 72 1750 1272
JAN-JUL 1746.3 99 2119.4 120 1475.8 83 1771 1291 70.16 261
JAN-SEP 1894.2 99 2299.9 120 1605.2 84 1921 1406 70.16 261
OCT-SEP 2273.4 107 2679.1 126 1984.5 93 2133
MF FLATHEAD - NEAR WEST GLACIER APR-AUG 1489.6 90 1872.7 113 1077.7 65 1651 1232
APR-JUL 1415.3 90 1769.2 112 1023.5 65 1576 1181
APR-SEP 1538.2 91 1927.6 114 1114.8 66 1697 1258
JAN-JUL 1665.0 95 2054.0 118 1384.7 79 1744 1339 72.63 295
JAN-SEP 1791.4 96 2210.9 119 1466.8 79 1865 1416 72.63 295
OCT-SEP 2239.0 108 2658.6 129 1914.4 93 2065
---------------------Forecast --------------------- ----------Runoff-----------
River Basin Period Probable % Maximum % Minimum % Average PrevYR CurYR %
SF FLATHEAD - HUNGRY HORSE DAM APR-AUG 1821.5 89 2313.6 113 1582.5 77 2043 1423
APR-JUL 1764.9 89 2244.5 113 1530.8 77 1981 1388
APR-SEP 1883.0 90 2355.8 113 1621.1 78 2088 1445
JAN-JUL 2159.9 97 2603.1 116 1830.2 82 2236 1645 92.66 252
JAN-SEP 2263.2 97 2736.7 117 1925.3 82 2343 1702 92.66 252
OCT-SEP 2790.0 109 3263.5 127 2452.1 96 2567
FLATHEAD - AT COLUMBIA FALLS APR-AUG 5059.4 92 6289.6 115 3864.2 71 5473 3853
APR-JUL 4807.5 92 6026.8 115 3676.4 70 5237 3691
APR-SEP 5217.6 93 6452.3 115 4003.7 71 5634 3940
JAN-JUL 5706.6 98 6988.2 120 4716.1 81 5847 4174 244.13 265
JAN-SEP 6118.7 98 7472.0 120 5018.1 80 6244 4422 244.13 265
OCT-SEP 7463.5 108 8816.8 128 6363.0 92 6906
FLATHEAD - SELI’Š KSANKA QLISPE’ DAMAPR-AUG 5784.8 90 7264.4 114 4418.7 69 6396 4521
APR-JUL 5535.7 90 6991.3 114 4225.6 69 6137 4325
APR-SEP 5980.8 91 7444.4 113 4569.4 69 6577 4616
JAN-JUL 6664.4 95 8336.4 119 5404.0 77 7010 5036 289.29 215
JAN-SEP 7191.8 97 8873.7 119 5704.2 77 7450 5327 289.29 215
OCT-SEP 8733.5 106 10415.4 126 7245.9 88 8277
CLARK FORK - NEAR PLAINS APR-AUG 9393.9 92 12402.4 121 7568.8 74 10215 6872
APR-JUL 8866.5 91 11805.5 121 7155.5 73 9749 6542
APR-SEP 9835.0 93 12812.1 121 7900.7 75 10574 7082
JAN-JUL 11155.5 98 13969.0 123 9247.7 82 11342 7814 490.21 203
JAN-SEP 12058.5 99 15122.5 124 9933.8 82 12168 8354 490.21 203
OCT-SEP 14463.1 106 17527.0 129 12338.2 91 13632
CLARK FORK - CABINET GORGE DAM APR-AUG 10792.8 96 14284.9 127 8785.5 78 11280 6998
APR-JUL 10133.6 94 13544.1 126 8262.3 77 10767 6687
APR-SEP 11345.1 97 14832.1 127 9215.2 79 11639 7179
JAN-JUL 12964.1 103 16144.2 128 10961.1 87 12591 7935 553.83 207
JAN-SEP 14136.7 105 17570.7 131 11831.3 88 13463 8428 553.83 207
OCT-SEP 16784.5 112 20218.5 135 14479.0 97 14991
PRIEST - NEAR PRIEST RIVER APR-AUG 598.5 73 819.2 100 440.0 53 823 637
APR-JUL 562.0 70 768.7 96 421.9 53 800 621
APR-SEP 628.5 75 860.5 102 460.5 55 843 649
JAN-JUL 1026.9 100 1231.2 120 832.8 81 1026 804 55.79 190
JAN-SEP 1080.2 101 1313.8 123 883.4 83 1069 832 55.79 190
OCT-SEP 1308.1 108 1541.7 127 1111.2 91 1217
---------------------Forecast --------------------- ----------Runoff-----------
River Basin Period Probable % Maximum % Minimum % Average PrevYR CurYR %
PEND OREILLE - ALBENI FALLS DAM APR-AUG 11737.5 91 15294.7 118 9617.8 74 12919 8764
APR-JUL 11209.2 91 14635.0 118 9148.8 74 12369 8391
APR-SEP 12214.0 92 15795.5 118 10016.0 75 13347 9030
JAN-JUL 14594.4 98 18283.4 123 12526.6 84 14922 10473 723.64 196
JAN-SEP 15658.2 98 19639.3 124 13455.0 85 15900 11112 723.64 196
OCT-SEP 19093.0 107 23074.1 129 16889.8 94 17911
COLUMBIA - AT INTL BOUNDARY APR-AUG 56405.5 105 63931.8 119 48242.0 90 53664 42218
APR-JUL 49613.2 103 57463.8 119 42501.8 88 48307 37452
APR-SEP 60341.3 106 68714.3 121 51268.8 90 56951 45091
JAN-JUL 59615.3 108 65790.2 119 51725.4 94 55223 43551 1812.18 160
JAN-SEP 69786.3 109 77927.7 122 60803.2 95 63866 51189 1812.18 160
OCT-SEP 79318.1 111 87459.6 122 70335.1 98 71709
KETTLE - AT LAURIER APR-AUG 1379.7 72 1928.9 100 742.6 39 1928 1670
APR-JUL 1357.2 72 1857.0 98 713.5 38 1886 1646
APR-SEP 1396.8 72 1961.0 100 760.9 39 1954 1682
JAN-JUL 1559.9 76 2159.3 105 869.8 42 2058 1798 37.78 197
JAN-SEP 1656.1 78 2281.3 107 914.1 43 2125 1833 37.78 197
OCT-SEP 1771.8 79 2397.0 107 1029.8 46 2247
NF COEUR D ALENE - AT ENAVILLE APR-AUG 575.7 79 802.2 110 345.4 47 727 462
APR-JUL 556.5 79 777.2 110 328.6 46 708 450
APR-SEP 591.4 80 819.9 110 360.3 49 743 472
JAN-JUL 1041.5 92 1355.8 120 794.3 70 1129 831 105.21 195
JAN-SEP 1078.1 93 1395.3 120 825.0 71 1164 853 105.21 195
OCT-SEP 1510.0 114 1827.3 138 1257.0 95 1322
ST JOE - AT CALDER APR-AUG 928.9 84 1317.1 118 646.7 58 1112 745
APR-JUL 895.5 83 1270.1 118 616.3 57 1076 722
APR-SEP 953.4 84 1347.5 118 669.8 59 1138 763
JAN-JUL 1340.9 95 1755.0 124 1095.2 77 1415 1020 105.21 253
JAN-SEP 1402.8 95 1820.4 123 1144.5 77 1477 1062 105.21 253
OCT-SEP 1830.0 112 2247.5 137 1571.6 96 1636
COEUR D ALENE - COEUR D ALENE LAKE APR-AUG 1964.2 80 2707.4 110 1300.5 53 2470 1484
APR-JUL 1920.6 79 2652.5 109 1258.8 52 2428 1473
APR-SEP 2000.7 80 2749.9 110 1335.6 53 2504 1499
JAN-JUL 3418.6 88 4585.2 119 2684.9 69 3868 2717 333.72 177
JAN-SEP 3503.2 89 4683.2 119 2755.3 70 3945 2744 333.72 177
OCT-SEP 4642.7 104 5822.7 131 3894.8 87 4461
---------------------Forecast --------------------- ----------Runoff-----------
River Basin Period Probable % Maximum % Minimum % Average PrevYR CurYR %
SPOKANE - AT SPOKANE APR-AUG 2020.9 80 2790.8 110 1354.0 53 2540 1553
APR-JUL 1957.8 79 2711.3 110 1293.7 52 2475 1526
APR-SEP 2064.4 80 2841.6 110 1395.9 54 2587 1570
JAN-JUL 3463.6 88 4644.6 118 2716.2 69 3926 2778 336.17 172
JAN-SEP 3576.4 89 4767.0 118 2809.5 70 4038 2823 336.17 172
OCT-SEP 4678.8 102 5869.4 128 3911.8 85 4584
SPOKANE - AT LONGLAKE APR-AUG 2264.7 80 3075.1 109 1630.0 58 2817 1705
APR-JUL 2162.6 80 2956.2 109 1530.2 56 2714 1649
APR-SEP 2345.8 81 3165.4 109 1711.5 59 2901 1753
JAN-JUL 3914.9 88 5207.9 117 3106.2 70 4433 3084 361.02 151
JAN-SEP 4103.7 89 5416.4 117 3272.9 71 4619 3189 361.02 151
OCT-SEP 5298.9 100 6611.6 125 4468.1 84 5295
COLUMBIA - GRAND COULEE DAM APR-AUG 59944.3 103 69000.1 119 50929.5 88 58186 45448
APR-JUL 53148.7 101 62104.9 118 45774.9 87 52774 40738
APR-SEP 63998.1 104 74067.9 120 54553.0 89 61483 48260
JAN-JUL 65252.2 106 72161.5 117 56424.3 91 61749 48445 2156.16 157
JAN-SEP 75297.4 107 85120.9 121 65795.2 93 70457 55967 2156.16 157
OCT-SEP 85855.7 109 95679.2 121 76353.4 97 78842
SIMILKAMEEN - NEAR HEDLEY APR-AUG 1228.0 125 1549.5 157 931.5 95 984 464
APR-JUL 1198.4 125 1487.9 156 910.7 95 956 454
APR-SEP 1254.6 125 1577.3 157 948.3 94 1004 471
JAN-JUL 1473.0 137 1746.7 162 1207.0 112 1078 543 64.19 344
JAN-SEP 1525.0 135 1804.5 160 1245.2 111 1126 560 64.19 344
OCT-SEP 1806.7 144 2086.2 166 1526.9 121 1257
SIMILKAMEEN - NEAR NIGHTHAWK APR-AUG 1567.4 117 1953.8 146 1155.1 87 1335 664
APR-JUL 1514.1 118 1874.4 146 1131.7 88 1286 646
APR-SEP 1600.9 117 1989.3 146 1183.8 87 1366 675
JAN-JUL 1872.9 130 2177.9 151 1445.3 100 1443 745 75.37 293
JAN-SEP 1931.2 127 2315.1 152 1498.4 98 1522 774 75.37 293
OCT-SEP 2257.8 133 2641.8 156 1825.0 108 1692
OKANOGAN - NEAR TONASKET APR-AUG 1793.3 108 2261.1 137 1266.1 76 1656 855
APR-JUL 1710.3 109 2139.3 137 1223.2 78 1566 815
APR-SEP 1856.3 108 2336.0 136 1325.0 77 1720 889
JAN-JUL 2116.8 116 2576.7 141 1647.5 90 1832 977 84.68 198
JAN-SEP 2279.0 115 2790.8 141 1743.5 88 1986 1051 84.68 198
OCT-SEP 2662.3 119 3174.2 142 2126.9 95 2238
---------------------Forecast --------------------- ----------Runoff-----------
River Basin Period Probable % Maximum % Minimum % Average PrevYR CurYR %
METHOW - NEAR PATEROS APR-AUG 1171.0 124 1550.1 165 900.9 96 942 679
APR-JUL 1138.9 126 1507.1 167 867.5 96 904 659
APR-SEP 1193.8 124 1576.4 163 923.5 96 965 695
JAN-JUL 1375.1 137 1718.5 172 1103.6 110 1001 744 49.90 334
JAN-SEP 1440.3 136 1792.7 169 1158.2 109 1063 781 49.90 334
OCT-SEP 1669.9 144 2022.3 174 1387.9 119 1162
STEHEKIN - AT STEHEKIN APR-AUG 721.1 93 895.6 115 611.0 79 778 559
APR-JUL 656.0 92 786.7 111 560.5 79 710 522
APR-SEP 753.8 93 952.8 117 631.7 78 814 580
JAN-JUL 796.7 98 928.1 115 704.8 87 809 612 32.41 197
JAN-SEP 905.4 99 1108.1 121 790.3 87 913 671 32.41 197
OCT-SEP 1185.7 113 1388.4 133 1070.6 102 1046
CHELAN - LAKE CHELAN DAM APR-AUG 1011.5 92 1342.3 122 837.4 76 1102 772
APR-JUL 952.8 93 1219.4 118 778.1 76 1029 732
APR-SEP 1043.3 92 1420.2 125 867.9 76 1139 790
JAN-JUL 1244.7 102 1499.2 123 1052.5 87 1217 886 75.00 245
JAN-SEP 1349.4 102 1736.7 131 1144.8 86 1326 943 75.00 245
OCT-SEP 1803.0 119 2190.4 144 1598.5 105 1518
WENATCHEE - AT PESHASTIN APR-AUG 1137.7 78 1528.3 105 939.0 65 1454 1082
APR-JUL 1076.6 78 1436.5 104 899.4 65 1379 1046
APR-SEP 1176.2 79 1567.2 105 968.2 65 1496 1104
JAN-JUL 1572.7 91 1916.2 111 1363.5 79 1726 1337 112.25 195
JAN-SEP 1671.3 91 2075.4 113 1447.7 79 1842 1394 112.25 195
OCT-SEP 2433.6 112 2837.6 130 2209.9 102 2175
COLUMBIA - BLO ROCK ISLAND DAM APR-AUG 66084.9 103 76274.1 119 55819.1 87 64028 49150
APR-JUL 58765.5 101 68213.5 117 50495.3 87 58256 44311
APR-SEP 69921.2 104 81651.3 121 59604.3 88 67524 52003
JAN-JUL 71856.1 105 79790.9 117 62423.0 91 68440 52894 2600.04 166
JAN-SEP 82444.5 106 93513.4 120 72566.8 93 77708 60586 2600.04 166
OCT-SEP 95094.8 109 106163.7 122 85217.1 98 87167
COLUMBIA - BLO PRIEST RAPIDS DAM APR-AUG 66084.9 102 76276.3 118 55839.1 86 64656 49743
APR-JUL 58762.6 100 68192.7 116 50500.4 86 58905 44904
APR-SEP 69932.8 103 81655.5 120 59618.0 87 68162 52642
JAN-JUL 71861.2 104 79788.8 115 62442.5 90 69359 53727 2614.80 163
JAN-SEP 82467.5 105 93537.3 119 72591.9 92 78616 61465 2614.80 163
OCT-SEP 95414.7 108 106484.5 121 85539.2 97 88197
---------------------Forecast --------------------- ----------Runoff-----------
River Basin Period Probable % Maximum % Minimum % Average PrevYR CurYR %
YAKIMA - NEAR MARTIN APR-AUG 92.6 74 129.6 104 62.8 50 124 91
APR-JUL 89.8 76 122.7 104 60.3 51 118 88
APR-SEP 96.1 74 132.9 103 66.1 51 129 92
JAN-JUL 144.9 82 182.8 104 116.9 66 176 144 11.26 93
JAN-SEP 151.1 80 190.8 102 123.1 66 188 147 11.26 93
OCT-SEP 263.7 106 303.4 122 235.7 95 249
KACHESS - NEAR EASTON APR-AUG 82.1 76 108.4 101 53.7 50 108 80
APR-JUL 80.9 78 105.0 101 52.8 51 104 75
APR-SEP 83.5 73 110.3 97 54.8 48 114 84
JAN-JUL 134.2 85 166.3 105 104.6 66 158 123 11.43 107
JAN-SEP 137.5 82 170.2 101 107.6 64 168 132 11.43 107
OCT-SEP 235.4 108 268.1 123 205.6 94 218
CLE ELUM - NEAR ROSLYN APR-AUG 315.8 78 428.9 105 230.5 57 407 290
APR-JUL 307.9 80 414.0 107 225.1 58 386 274
APR-SEP 321.4 77 437.8 105 235.4 56 419 296
JAN-JUL 441.5 86 544.2 106 355.4 69 512 405 31.86 134
JAN-SEP 452.6 83 565.4 104 366.4 67 545 426 31.86 134
OCT-SEP 744.9 111 857.8 128 658.8 98 672
YAKIMA - NEAR HORLICK APR-AUG 714.6 78 964.1 105 503.9 55 916 623
APR-JUL 691.0 79 915.5 104 481.5 55 876 602
APR-SEP 750.8 78 1004.1 104 539.1 56 962 653
JAN-JUL 1139.3 87 1415.1 108 895.2 68 1311 1005 95.78 124
JAN-SEP 1201.9 86 1496.0 107 956.9 68 1398 1056 95.78 124
OCT-SEP 1973.0 113 2267.1 130 1728.0 99 1746
BUMPING - BELOW BUMPING DAM APR-AUG 88.6 74 131.2 109 71.6 59 120 90
APR-JUL 85.4 74 124.0 108 68.7 60 115 87
APR-SEP 91.2 73 135.4 109 74.1 59 125 92
JAN-JUL 121.0 77 165.8 105 107.5 68 158 122 6.74 81
JAN-SEP 128.4 77 172.9 103 113.5 68 168 127 6.74 81
OCT-SEP 209.2 101 253.6 123 194.2 94 207
TIETON - AT TIETON DAM APR-AUG 197.6 95 239.8 115 172.1 82 209 161
APR-JUL 177.1 93 216.9 114 150.0 79 191 147
APR-SEP 214.2 95 257.6 115 187.4 83 225 164
JAN-JUL 271.4 100 318.6 118 233.8 86 271 217 18.60 127
JAN-SEP 309.0 101 360.7 118 267.8 88 305 234 18.60 127
OCT-SEP 448.4 121 500.1 134 407.3 109 372
---------------------Forecast --------------------- ----------Runoff-----------
River Basin Period Probable % Maximum % Minimum % Average PrevYR CurYR %
NACHES - NEAR NACHES APR-AUG 651.5 84 894.5 116 501.0 65 773 584
APR-JUL 620.5 84 854.5 116 473.5 64 737 566
APR-SEP 674.5 84 933.4 116 523.0 65 807 585
JAN-JUL 1055.2 102 1351.4 131 899.1 87 1030 790 116.99 240
JAN-SEP 1109.1 101 1416.2 129 953.0 87 1100 809 116.99 240
OCT-SEP 1678.1 129 1985.2 153 1522.0 117 1297
YAKIMA - NEAR PARKER APR-AUG 1545.4 86 2072.9 115 1177.8 65 1804 1228
APR-JUL 1456.5 85 1964.3 114 1093.2 64 1721 1188
APR-SEP 1652.7 87 2183.6 115 1311.9 69 1899 1268
JAN-JUL 2486.8 96 3128.5 121 2117.7 82 2596 1952 169.65 116
JAN-SEP 2684.3 97 3334.6 120 2336.2 84 2774 2032 169.65 116
OCT-SEP 3991.5 117 4641.7 136 3643.4 107 3404
YAKIMA - AT KIONA APR-AUG 754.1 72 1200.6 115 566.3 54 1043 589
APR-JUL 668.6 70 1103.9 116 486.9 51 952 530
APR-SEP 841.1 73 1293.8 113 644.6 56 1149 655
JAN-JUL 1651.8 93 2185.9 122 1284.7 72 1785 1150 183.08 136
JAN-SEP 1821.0 92 2370.1 120 1451.1 73 1982 1275 183.08 136
OCT-SEP 2636.0 105 3185.2 127 2266.2 90 2516
SNAKE - JACKSON LAKE AT DAM APR-AUG 900.1 110 1057.5 130 719.5 88 816 561
APR-JUL 850.2 110 1003.9 130 680.0 88 771 537
APR-SEP 935.8 110 1098.3 129 751.2 88 849 581
JAN-JUL 948.5 109 1129.6 130 801.1 92 869 626 20.26 107
JAN-SEP 1032.9 109 1217.2 129 869.9 92 947 670 20.26 107
OCT-SEP 1127.0 108 1311.3 126 964.1 93 1039
GREYS - AB RES NR ALPINE APR-AUG 332.4 95 420.1 120 258.0 74 350 300
APR-JUL 299.9 94 375.4 117 236.1 74 321 278
APR-SEP 355.0 96 448.7 121 276.0 74 371 317
JAN-JUL 336.0 93 409.9 113 276.9 77 361 309 7.64 111
JAN-SEP 389.3 95 482.7 117 316.8 77 412 347 7.64 111
OCT-SEP 435.3 94 528.7 115 362.9 79 461
SALT - ABV PALISADES RES NR ETNA APR-AUG 326.9 98 436.1 130 224.6 67 335 263
APR-JUL 292.9 97 386.6 128 198.0 66 301 238
APR-SEP 362.2 98 480.5 131 253.4 69 368 291
JAN-JUL 372.8 97 473.7 124 290.6 76 383 317 16.76 116
JAN-SEP 442.3 98 559.0 124 350.0 78 450 370 16.76 116
OCT-SEP 534.0 98 650.8 119 441.8 81 545
---------------------Forecast --------------------- ----------Runoff-----------
River Basin Period Probable % Maximum % Minimum % Average PrevYR CurYR %
SNAKE - NEAR IRWIN APR-AUG 3399.7 101 4435.8 132 2661.0 79 3362 2683
APR-JUL 3092.8 100 4045.5 131 2453.4 79 3097 2498
APR-SEP 3633.9 102 4701.4 131 2850.9 80 3577 2856
JAN-JUL 3620.1 101 4617.0 129 2997.8 84 3584 2927 96.14 110
JAN-SEP 4156.4 102 5240.4 129 3404.3 84 4064 3285 96.14 110
OCT-SEP 4706.8 102 5790.8 126 3954.7 86 4612
SNAKE - NEAR HEISE APR-AUG 3672.1 102 4789.3 133 2850.9 79 3605 2723
APR-JUL 3336.6 101 4362.8 132 2620.8 79 3308 2511
APR-SEP 3931.8 102 5084.2 132 3061.9 80 3849 2915
JAN-JUL 3942.8 102 5013.5 130 3249.2 84 3871 3021 111.42 110
JAN-SEP 4530.5 103 5701.9 129 3714.3 84 4413 3425 111.42 110
OCT-SEP 5164.6 102 6336.0 125 4348.4 86 5050
FALL RIVER - NEAR CHESTER APR-AUG 323.7 92 417.3 119 221.2 63 352 259
APR-JUL 311.7 95 393.3 120 215.7 66 329 239
APR-SEP 341.0 90 438.8 116 234.0 62 377 281
JAN-JUL 395.5 95 480.5 116 314.1 76 416 318 18.26 114
JAN-SEP 425.7 92 521.0 112 332.4 72 464 360 18.26 114
OCT-SEP 517.9 93 613.2 110 424.6 76 559
HENRYS FORK - AT ST. ANTHONY APR-AUG 647.5 90 796.2 111 428.3 60 720 483
APR-JUL 583.4 91 712.9 112 383.1 60 639 421
APR-SEP 703.1 89 871.8 110 474.0 60 794 539
JAN-JUL 828.7 89 974.4 105 654.6 70 931 671 46.02 84
JAN-SEP 949.3 87 1128.4 104 729.8 67 1086 789 46.02 84
OCT-SEP 1164.6 86 1343.7 99 945.0 70 1358
TETON - NEAR ST. ANTHONY APR-AUG 392.9 95 522.6 127 271.7 66 412 312
APR-JUL 349.4 95 465.6 126 235.9 64 368 283
APR-SEP 429.7 96 566.5 127 302.1 68 447 335
JAN-JUL 419.5 94 530.2 118 307.3 69 448 354 14.70 111
JAN-SEP 499.4 95 634.1 120 373.3 71 526 407 14.70 111
OCT-SEP 578.0 94 712.7 116 451.9 74 614
HENRYS FORK - AT REXBURG APR-AUG 1205.9 79 1441.0 94 804.0 52 1536 1040
APR-JUL 1073.9 80 1313.9 98 723.5 54 1335 924
APR-SEP 1325.0 77 1564.5 91 891.6 52 1710 1147
JAN-JUL 1372.6 80 1637.9 95 1050.0 61 1721 1254 64.79 91
JAN-SEP 1618.6 77 1895.3 90 1229.5 59 2096 1477 64.79 91
OCT-SEP 1939.6 77 2216.3 88 1550.5 61 2527
---------------------Forecast --------------------- ----------Runoff-----------
River Basin Period Probable % Maximum % Minimum % Average PrevYR CurYR %
WILLOW CREEK - NEAR RIRIE APR-AUG 64.2 109 133.6 226 31.8 54 59 36
APR-JUL 63.6 109 130.1 223 31.8 55 58 35
APR-SEP 65.4 108 136.4 226 32.0 53 60 37
JAN-JUL 73.4 107 138.5 201 44.3 64 69 46 1.80 128
JAN-SEP 74.9 105 144.8 204 44.8 63 71 48 1.80 128
OCT-SEP 84.0 107 153.9 196 54.0 69 79
SNAKE - NEAR SHELLEY APR-AUG 4470.8 99 5872.8 130 3292.7 73 4520 3268
APR-JUL 4058.9 99 5339.2 131 3017.5 74 4090 3015
APR-SEP 4826.7 98 6277.8 128 3565.4 73 4905 3539
JAN-JUL 4972.2 103 6262.5 129 3967.9 82 4841 3825 166.63 120
JAN-SEP 5711.5 101 7157.2 127 4540.2 80 5656 4349 166.63 120
OCT-SEP 6590.1 100 8035.9 122 5418.9 82 6605
PORTNEUF - AT TOPAZ APR-AUG 57.3 87 74.5 113 39.0 59 66 55
APR-JUL 49.9 87 65.2 113 33.2 58 58 47
APR-SEP 64.5 89 83.6 116 44.7 62 72 61
JAN-JUL 76.5 92 91.5 110 62.3 75 83 74 4.43 110
JAN-SEP 91.6 94 109.0 111 74.6 76 98 88 4.43 110
OCT-SEP 113.0 96 130.5 111 96.1 81 118
SNAKE - AT AMERICAN FALLS DAM APR-AUG 2755.2 109 4156.1 164 1412.5 56 2531 1100
APR-JUL 2688.8 106 3980.6 157 1487.3 59 2529 1248
APR-SEP 2870.2 109 4380.9 167 1478.3 56 2624 1124
JAN-JUL 3875.3 106 5192.2 142 2762.1 76 3651 2268 200.94 96
JAN-SEP 4013.1 107 5548.9 148 2743.8 73 3745 2144 200.94 96
OCT-SEP 5100.4 104 6636.1 136 3831.1 78 4883
SALMON FALLS CREEK - NR SAN JACINTO APR-AUG 41.7 63 81.4 123 21.5 33 66 35
APR-JUL 40.8 63 79.9 124 20.9 32 65 35
APR-SEP 43.7 64 83.8 123 22.8 34 68 37
JAN-JUL 58.7 68 97.1 112 34.4 40 87 53 2.25 95
JAN-SEP 61.5 68 100.8 112 36.5 41 90 55 2.25 95
OCT-SEP 71.0 71 110.3 111 46.0 46 100
BIG LOST - AT HOWELL RANCH NEAR CHILLY APR-AUG 242.8 147 334.6 203 161.6 98 165 109
APR-JUL 226.6 147 311.9 202 151.0 98 154 103
APR-SEP 251.0 146 346.1 201 168.9 98 172 113
JAN-JUL 243.2 145 328.5 195 168.6 100 168 117 3.79 145
JAN-SEP 267.6 144 362.7 195 185.4 100 186 127 3.79 145
OCT-SEP 285.6 140 380.8 186 203.5 100 204
---------------------Forecast --------------------- ----------Runoff-----------
River Basin Period Probable % Maximum % Minimum % Average PrevYR CurYR %
BIG LOST - MACKAY RESERVOIR NEAR MACKAY APR-AUG 216.6 172 307.9 244 144.1 114 126 79
APR-JUL 198.3 175 280.9 248 131.2 116 113 69
APR-SEP 229.4 168 325.1 239 154.5 113 136 94
JAN-JUL 224.5 159 307.7 217 159.3 113 141 94 4.63 87
JAN-SEP 255.7 156 351.9 214 180.8 110 164 119 4.63 87
OCT-SEP 285.4 145 381.6 194 210.5 107 197
BIG WOOD - AT HAILEY APR-AUG 276.7 112 374.9 152 172.4 70 246 164
APR-JUL 255.4 110 347.5 150 161.1 70 232 157
APR-SEP 289.5 113 391.7 152 181.9 71 257 171
JAN-JUL 282.7 107 376.1 143 197.8 75 263 185 6.35 122
JAN-SEP 317.9 110 419.8 145 219.5 76 289 199 6.35 122
OCT-SEP 349.1 109 451.0 140 250.7 78 321
BIG WOOD - MAGIC DAM APR-AUG 238.5 102 389.4 166 122.5 52 235 131
APR-JUL 230.0 101 366.9 162 120.3 53 227 123
APR-SEP 244.8 102 401.4 167 126.1 52 240 134
JAN-JUL 312.4 115 495.6 182 183.2 67 273 186 6.18 184
JAN-SEP 325.5 114 517.1 181 188.4 66 286 197 6.18 184
OCT-SEP 344.4 112 536.0 175 207.3 68 307
LITTLE WOOD - NEAR CAREY APR-AUG 89.0 120 147.8 199 47.4 64 74 34
APR-JUL 85.8 120 141.3 198 45.6 64 71 33
APR-SEP 91.8 120 153.1 200 49.1 64 77 34
JAN-JUL 108.2 122 171.7 194 67.2 76 89 45 2.81 138
JAN-SEP 114.5 122 183.4 196 71.0 76 94 46 2.81 138
OCT-SEP 126.0 121 194.9 187 82.5 79 104
SNAKE - AT KING HILL APR-AUG 2411.4 82 3959.2 135 1942.5 66 2925 2143
APR-JUL 2005.2 82 3479.7 142 1533.7 63 2450 1751
APR-SEP 2843.7 83 4396.2 129 2376.6 70 3412 2575
JAN-JUL 3403.6 82 5079.2 123 2756.5 67 4129 2848 198.84 67
JAN-SEP 4302.4 85 6171.5 121 3567.4 70 5090 3672 198.84 67
OCT-SEP 5532.5 83 7401.7 112 4797.5 72 6626
BRUNEAU - NEAR HOT SPRINGS APR-AUG 121.6 68 167.7 93 74.4 41 180 118
APR-JUL 118.8 68 162.4 93 74.3 42 176 115
APR-SEP 124.2 68 171.8 94 75.9 41 183 121
JAN-JUL 166.5 77 211.5 97 110.2 51 217 165 3.90 86
JAN-SEP 171.5 76 219.3 98 112.4 50 225 171 3.90 86
OCT-SEP 188.2 78 236.1 98 129.1 53 242
---------------------Forecast --------------------- ----------Runoff-----------
River Basin Period Probable % Maximum % Minimum % Average PrevYR CurYR %
SNAKE - BELOW SWAN FALLS APR-AUG 2628.5 93 4129.3 147 2192.8 78 2812 1913
APR-JUL 2200.9 92 3653.5 152 1746.0 73 2405 1588
APR-SEP 3088.1 95 4592.2 141 2634.6 81 3258 2321
JAN-JUL 3807.1 91 5473.8 131 3169.9 76 4166 2798 212.61 68
JAN-SEP 4768.5 95 6587.6 131 4009.2 80 5020 3531 212.61 68
OCT-SEP 6054.1 92 7873.2 120 5294.7 80 6584
OWYHEE - OWYHEE DAM APR-AUG 199.7 62 492.3 153 103.5 32 321 228
APR-JUL 186.9 61 470.7 153 95.0 31 307 211
APR-SEP 211.4 63 510.1 152 110.5 33 336 242
JAN-JUL 491.0 90 817.4 149 289.4 53 547 597 13.30 56
JAN-SEP 510.3 89 853.3 148 307.9 54 575 628 13.30 56
OCT-SEP 566.3 88 909.3 142 363.8 57 641
SF BOISE - ANDERSON RANCH DAM APR-AUG 452.6 94 582.8 121 271.7 57 480 429
APR-JUL 436.2 94 562.3 122 261.5 57 462 410
APR-SEP 468.2 95 600.7 121 284.1 57 495 443
JAN-JUL 543.3 99 729.4 133 405.9 74 550 489 21.19 190
JAN-SEP 577.9 99 764.5 131 427.5 73 583 521 21.19 190
OCT-SEP 659.9 104 846.5 133 509.5 80 637
BOISE - LUCKY PEAK DAM APR-AUG 1141.3 89 1528.1 119 709.5 55 1284 1163
APR-JUL 1092.3 89 1454.9 118 674.7 55 1232 1121
APR-SEP 1183.2 89 1579.1 119 744.6 56 1329 1202
JAN-JUL 1433.4 92 1944.9 124 1060.8 68 1566 1440 59.64 152
JAN-SEP 1521.4 92 2053.2 123 1131.9 68 1663 1521 59.64 152
OCT-SEP 1750.3 96 2282.1 125 1360.8 74 1829
BOISE - NEAR PARMA APR-AUG 441.5 83 788.5 148 355.6 67 531 389
APR-JUL 395.1 81 738.2 152 331.8 68 486 351
APR-SEP 486.1 83 845.6 145 369.8 63 584 442
JAN-JUL 620.7 82 965.8 127 543.7 71 761 620 27.53 75
JAN-SEP 711.7 83 1073.2 125 589.0 69 859 712 27.53 75
OCT-SEP 871.4 85 1232.9 120 748.7 73 1023
MALHEUR - NEAR DREWSEY APR-AUG 30.0 47 58.6 92 14.6 23 64 116
APR-JUL 29.6 47 57.6 91 14.6 23 64 115
APR-SEP 30.8 48 59.8 92 14.7 23 65 117
JAN-JUL 71.3 62 120.2 104 50.6 44 116 264 3.31 71
JAN-SEP 71.6 61 122.7 105 51.0 44 117 266 3.31 71
OCT-SEP 85.9 66 136.9 105 65.3 50 130
---------------------Forecast --------------------- ----------Runoff-----------
River Basin Period Probable % Maximum % Minimum % Average PrevYR CurYR %
NF MALHEUR - AT BEULAH APR-AUG 35.5 63 68.6 121 20.6 36 57 76
APR-JUL 34.2 64 65.0 121 19.7 37 54 74
APR-SEP 37.0 62 71.7 121 21.9 37 59 78
JAN-JUL 63.4 76 99.1 119 47.2 56 84 138 2.51 85
JAN-SEP 65.9 74 104.4 117 49.4 55 89 143 2.51 85
OCT-SEP 77.7 77 116.1 115 61.2 61 101
DEADWOOD - BELOW DEADWOOD RES APR-AUG 125.3 95 154.4 118 84.6 64 131 128
APR-JUL 122.1 98 149.6 120 82.0 66 125 126
APR-SEP 128.2 95 157.7 117 87.8 65 135 132
JAN-JUL 146.8 103 187.9 132 114.8 81 143 142 5.66 199
JAN-SEP 152.5 100 194.7 128 119.7 78 153 147 5.66 199
OCT-SEP 177.5 106 219.7 131 144.7 86 168
NF PAYETTE - CASCADE DAM APR-AUG 488.4 104 585.5 124 312.5 66 470 452
APR-JUL 469.4 101 563.1 122 303.4 66 463 444
APR-SEP 503.5 103 605.4 124 324.4 67 487 466
JAN-JUL 585.8 102 753.0 131 433.7 75 576 554 37.86 232
JAN-SEP 619.8 103 795.8 133 455.0 76 600 576 37.86 232
OCT-SEP 748.5 109 924.4 135 583.6 85 685
PAYETTE - NEAR HORSESHOE BEND APR-AUG 1505.5 98 1834.3 119 995.3 65 1540 1567
APR-JUL 1443.3 97 1760.2 119 952.7 64 1484 1515
APR-SEP 1561.6 98 1901.0 119 1054.2 66 1597 1622
JAN-JUL 1867.2 101 2427.8 131 1389.0 75 1854 1892 97.14 198
JAN-SEP 1985.0 101 2586.8 131 1475.4 75 1968 2000 97.14 198
OCT-SEP 2334.6 106 2936.4 133 1825.0 83 2208
PAYETTE - NEAR EMMETT APR-AUG 1285.1 101 1737.3 136 784.9 61 1277 1291
APR-JUL 1178.5 100 1613.1 137 693.3 59 1179 1171
APR-SEP 1364.5 103 1832.2 138 858.0 65 1325 1333
JAN-JUL 1591.2 100 2191.7 138 1094.0 69 1589 1642 76.14 141
JAN-SEP 1778.6 102 2410.4 139 1259.4 73 1736 1804 76.14 141
OCT-SEP 2027.0 104 2658.8 137 1507.9 77 1947
WEISER - NEAR WEISER APR-AUG 311.7 82 438.0 115 211.3 56 380 373
APR-JUL 295.7 81 420.5 115 195.9 54 365 359
APR-SEP 324.6 83 450.6 116 222.0 57 389 382
JAN-JUL 589.5 91 794.7 123 399.9 62 645 757 47.53 179
JAN-SEP 616.9 92 823.4 123 425.5 64 669 780 47.53 179
OCT-SEP 689.0 95 895.5 123 497.6 69 726
---------------------Forecast --------------------- ----------Runoff-----------
River Basin Period Probable % Maximum % Minimum % Average PrevYR CurYR %
SNAKE - AT WEISER APR-AUG 5168.4 97 7825.8 147 3956.8 75 5311 4346
APR-JUL 4473.6 95 7111.9 151 3386.6 72 4718 3817
APR-SEP 5873.4 99 8543.3 143 4572.4 77 5956 4961
JAN-JUL 7198.2 93 10391.9 135 5779.7 75 7719 6890 396.81 84
JAN-SEP 8594.1 96 12066.1 135 7009.8 78 8957 8035 396.81 84
OCT-SEP 10591.7 95 14063.7 126 9007.3 80 11199
BURNT - Unity Dam & Burnt RVR NR Hereford APR-AUG 15.8 52 27.1 89 5.7 19 30 38
APR-JUL 15.6 53 26.8 90 5.6 19 30 38
APR-SEP 16.4 53 27.8 90 6.1 20 31 39
JAN-JUL 32.7 65 49.6 99 19.4 39 50 70 1.74 97
JAN-SEP 33.3 65 51.5 100 19.8 38 51 72 1.74 97
OCT-SEP 41.0 71 59.2 102 27.5 48 58
EAGLE CREEK - ABOVE SKULL CK APR-AUG 121.7 72 153.0 91 89.4 53 169 185
APR-JUL 113.9 71 144.8 90 84.1 52 161 178
APR-SEP 126.8 73 158.5 91 93.6 54 174 190
JAN-JUL 146.4 78 190.3 101 115.7 62 188 205 5.30 134
JAN-SEP 157.6 78 202.7 101 125.0 62 201 218 5.30 134
OCT-SEP 182.2 83 227.4 103 149.7 68 221
SNAKE - BROWNLEE DAM APR-AUG 5580.9 97 8287.6 144 4241.5 74 5736 4812
APR-JUL 4890.1 95 7536.6 147 3664.8 72 5125 4267
APR-SEP 6314.2 99 9034.9 141 4869.9 76 6398 5436
JAN-JUL 7837.2 94 11128.5 134 6267.1 75 8326 7650 436.45 87
JAN-SEP 9242.9 96 12904.2 134 7537.5 79 9600 8819 436.45 87
OCT-SEP 11335.1 95 14996.3 126 9629.7 81 11906
SNAKE - AT HELLS CANYON DAM APR-AUG 5580.9 92 8287.6 137 4241.5 70 6046 5036
APR-JUL 4890.1 90 7536.6 139 3664.8 68 5429 4486
APR-SEP 6314.2 94 9034.9 134 4869.9 72 6725 5670
JAN-JUL 7849.8 89 11141.1 126 6279.7 71 8834 7970 450.59 85
JAN-SEP 9255.5 91 12916.7 128 7550.1 75 10130 9154 450.59 85
OCT-SEP 11370.3 91 15031.5 120 9664.9 77 12500
IMNAHA - AT IMNAHA APR-AUG 224.4 83 291.2 108 145.1 54 269 235
APR-JUL 215.2 83 279.5 108 136.8 53 258 226
APR-SEP 231.8 84 299.4 108 152.0 55 277 242
JAN-JUL 284.1 90 365.1 116 190.6 60 315 283 10.77 158
JAN-SEP 300.8 90 387.2 116 206.3 62 334 299 10.77 158
OCT-SEP 337.2 92 423.7 116 242.8 66 366
---------------------Forecast --------------------- ----------Runoff-----------
River Basin Period Probable % Maximum % Minimum % Average PrevYR CurYR %
SALMON - AT SALMON APR-AUG 958.4 110 1286.9 147 723.5 83 873 696
APR-JUL 880.0 109 1191.9 147 673.0 83 810 647
APR-SEP 1024.8 110 1365.8 147 779.4 84 929 745
JAN-JUL 1075.7 107 1388.1 138 854.7 85 1008 837 38.10 107
JAN-SEP 1220.5 108 1560.3 139 962.6 85 1126 935 38.10 107
OCT-SEP 1450.0 108 1789.8 133 1192.1 89 1346
SALMON - AT WHITEBIRD APR-AUG 5633.9 95 7034.2 119 4061.8 69 5917 4961
APR-JUL 5313.6 95 6581.2 117 3810.5 68 5614 4730
APR-SEP 5907.2 96 7348.0 119 4291.8 70 6158 5162
JAN-JUL 6301.0 96 7777.8 119 4895.2 75 6555 5601 211.48 146
JAN-SEP 6880.1 97 8460.6 119 5407.1 76 7099 6032 211.48 146
OCT-SEP 7894.9 99 9475.4 119 6421.9 81 7958
GRANDE RONDE - NEAR PERRY APR-AUG 131.2 75 231.9 133 51.7 30 174 82
APR-JUL 129.7 75 228.6 133 50.7 29 172 82
APR-SEP 132.7 75 237.0 135 52.8 30 176 83
JAN-JUL 224.5 83 326.4 121 121.6 45 271 205 9.20 101
JAN-SEP 230.4 84 334.4 122 123.6 45 274 206 9.20 101
OCT-SEP 247.5 85 351.5 121 140.7 48 291
LOSTINE - NR LOSTINE APR-AUG 92.0 81 118.4 105 65.5 58 113 88
APR-JUL 89.8 83 112.2 104 63.7 59 108 85
APR-SEP 93.2 81 120.0 104 67.8 59 116 90
JAN-JUL 104.4 88 127.1 107 75.4 63 119 93 2.86 170
JAN-SEP 108.0 85 132.6 105 78.5 62 126 99 2.86 170
OCT-SEP 120.4 88 145.0 106 90.9 67 137
GRANDE RONDE - TROY APR-AUG 994.6 77 1344.4 104 520.3 40 1293 936
APR-JUL 950.3 76 1288.5 103 488.9 39 1251 906
APR-SEP 1033.1 78 1390.6 104 549.1 41 1331 965
JAN-JUL 1632.3 87 1971.5 105 1173.6 63 1872 1557 100.04 141
JAN-SEP 1722.9 88 2075.1 106 1246.1 64 1952 1616 100.04 141
OCT-SEP 1977.4 91 2329.6 107 1500.6 69 2170
SNAKE - LOWER GRANITE DAM APR-AUG 19066.6 90 23195.2 110 13900.0 66 21121 16674
APR-JUL 17726.9 89 21865.5 110 12853.4 64 19946 15809
APR-SEP 20331.1 91 24455.0 110 14947.7 67 22232 17594
JAN-JUL 24540.2 89 31507.7 115 20111.4 73 27450 22893 1278.14 122
JAN-SEP 27065.0 91 34129.8 115 22118.8 74 29736 24677 1278.14 122
OCT-SEP 32301.7 94 39366.5 115 27355.5 80 34287
---------------------Forecast --------------------- ----------Runoff-----------
River Basin Period Probable % Maximum % Minimum % Average PrevYR CurYR %
CLEARWATER - AT OROFINO APR-AUG 3926.0 87 4775.0 105 2786.8 61 4539 3507
APR-JUL 3806.8 86 4659.5 105 2693.5 61 4417 3422
APR-SEP 4008.9 87 4860.5 105 2861.9 62 4632 3573
JAN-JUL 5151.3 93 6460.6 117 4156.4 75 5531 4453 263.75 192
JAN-SEP 5365.0 93 6682.7 116 4310.7 75 5745 4603 263.75 192
OCT-SEP 6357.6 101 7675.4 122 5303.3 84 6313
NF CLEARWATER - DWORSHAK DAM APR-AUG 2080.3 81 2630.8 103 1540.0 60 2554 1819
APR-JUL 2009.6 81 2542.4 103 1481.6 60 2474 1768
APR-SEP 2131.9 81 2690.0 103 1588.4 61 2620 1857
JAN-JUL 3075.3 91 4064.1 120 2633.6 78 3397 2620 219.34 195
JAN-SEP 3198.6 90 4208.0 119 2739.5 77 3543 2708 219.34 195
OCT-SEP 4084.0 102 5093.4 127 3624.8 91 3998
CLEARWATER - AT SPALDING APR-AUG 6127.4 84 7764.1 106 4514.2 62 7319 5441
APR-JUL 5936.3 83 7547.6 106 4348.4 61 7117 5295
APR-SEP 6297.9 84 7928.0 106 4648.8 62 7481 5552
JAN-JUL 8693.3 92 11300.7 120 7290.8 77 9421 7403 522.12 186
JAN-SEP 9060.9 93 11720.4 120 7569.1 77 9785 7660 522.12 186
OCT-SEP 10993.9 101 13653.4 126 9502.1 88 10841
COLUMBIA - MCNARY DAM APR-AUG 84230.4 96 100970.0 115 69334.9 79 88088 65657
APR-JUL 76055.8 94 92127.8 114 62336.5 77 80726 60057
APR-SEP 89358.0 96 107214.0 116 73863.9 80 92790 69577
JAN-JUL 97605.5 98 114590.3 115 86695.7 87 99964 76729 3754.97 132
JAN-SEP 110324.3 98 130215.3 116 98181.7 88 112028 86249 3754.97 132
OCT-SEP 128466.2 101 148356.2 117 116322.9 92 126785
UMATILLA - NEAR GIBBON APR-AUG 52.4 66 72.1 90 29.9 37 80 54
APR-JUL 49.6 64 69.1 90 27.6 36 77 51
APR-SEP 54.9 67 74.7 91 32.0 39 82 58
JAN-JUL 114.6 79 156.1 108 84.8 59 145 130 14.74 150
JAN-SEP 119.8 80 161.9 108 89.4 60 150 137 14.74 150
OCT-SEP 149.6 86 191.7 110 119.2 68 174
UMATILLA - AT PENDLETON APR-AUG 104.3 67 166.6 107 46.5 30 155 88
APR-JUL 101.9 67 163.0 107 45.8 30 152 86
APR-SEP 106.8 68 170.1 108 47.6 30 158 90
JAN-JUL 242.8 75 344.9 106 174.7 54 326 281 22.60 93
JAN-SEP 248.5 75 351.1 106 177.2 53 331 286 22.60 93
OCT-SEP 306.7 81 409.3 108 235.4 62 380
---------------------Forecast --------------------- ----------Runoff-----------
River Basin Period Probable % Maximum % Minimum % Average PrevYR CurYR %
NF JOHN DAY - AT MONUMENT APR-AUG 379.9 68 558.4 100 187.2 34 558 499
APR-JUL 372.6 68 550.1 100 184.0 33 551 494
APR-SEP 386.4 69 567.0 101 192.3 34 564 505
JAN-JUL 617.1 71 879.2 101 397.2 46 869 1042 35.40 109
JAN-SEP 634.6 72 895.2 101 405.9 46 883 1053 35.40 109
OCT-SEP 709.9 75 970.4 103 481.1 51 945
JOHN DAY - AT SERVICE CK APR-AUG 467.7 59 703.0 89 248.1 31 790 757
APR-JUL 464.3 59 697.9 89 248.0 32 781 748
APR-SEP 474.7 59 711.7 89 250.5 31 798 767
JAN-JUL 817.7 65 1170.0 93 538.6 43 1262 1629 49.08 92
JAN-SEP 826.7 65 1180.3 92 540.2 42 1279 1648 49.08 92
OCT-SEP 944.4 68 1297.9 93 657.8 47 1392
COLUMBIA - JOHN DAY DAM APR-AUG 85996.1 98 102730.0 117 70880.6 81 87643 67401
APR-JUL 77574.8 96 93776.1 116 63736.7 79 80636 61843
APR-SEP 91279.3 99 109031.0 118 75591.6 82 92354 71335
JAN-JUL 100528.4 99 118089.9 117 89435.7 88 101178 80095 4079.74 133
JAN-SEP 113609.9 101 133773.9 118 101158.2 90 112896 89587 4079.74 133
OCT-SEP 132769.6 103 152933.6 119 120318.1 94 128295
DESCHUTES - AT MOODY NR BIGGS APR-AUG 1475.2 90 1539.8 94 1432.8 88 1637 1513
APR-JUL 1214.5 89 1276.8 94 1176.7 86 1365 1259
APR-SEP 1727.0 91 1795.3 94 1682.4 88 1902 1775
JAN-JUL 2248.9 87 2375.3 92 2176.3 84 2590 2631 156.59 70
JAN-SEP 2760.7 88 2894.7 93 2681.2 86 3127 3147 156.59 70
OCT-SEP 3679.2 89 3813.3 93 3599.8 87 4118
COLUMBIA - THE DALLES DAM APR-AUG 86324.7 97 103079.0 116 71148.1 80 89196 67993
APR-JUL 77778.0 95 94018.1 115 63911.6 78 81933 62272
APR-SEP 91744.8 97 109557.0 116 76054.6 81 94166 72162
JAN-JUL 101116.4 97 118770.5 115 89983.2 87 103714 81428 4135.09 126
JAN-SEP 114467.5 99 134706.5 116 101944.6 88 115946 91317 4135.09 126
OCT-SEP 134353.7 102 154592.7 117 121830.1 92 132314
COLUMBIA - BONNEVILLE DAM APR-AUG 87304.6 97 104270.0 116 72126.8 80 90174 67995
APR-JUL 78742.4 95 95012.4 115 64773.9 78 82678 62214
APR-SEP 92836.1 98 110853.0 116 77170.2 81 95202 72318
JAN-JUL 102968.1 98 120671.6 115 91463.5 87 105246 82523 4223.78 124
JAN-SEP 116287.6 99 136884.6 116 103470.4 88 117770 92627 4223.78 124
OCT-SEP 137237.7 102 157834.7 117 124419.9 92 134527
---------------------Forecast --------------------- ----------Runoff-----------
River Basin Period Probable % Maximum % Minimum % Average PrevYR CurYR %
MCKENZIE - NEAR VIDA APR-AUG 879.2 81 1164.2 107 724.9 66 1091 891
APR-JUL 761.0 78 1028.1 105 618.4 63 978 760
APR-SEP 990.5 83 1288.7 108 820.5 69 1195 995
JAN-JUL 1481.0 74 1899.3 95 1306.3 65 2001 1924 153.80 74
JAN-SEP 1714.2 77 2156.5 97 1508.6 68 2219 2160 153.80 74
OCT-SEP 2316.7 79 2759.1 94 2111.1 72 2951
NORTH SANTIAM - AT MEHAMA APR-AUG 651.7 81 896.1 112 451.4 56 802 501
APR-JUL 605.5 80 844.5 112 409.8 54 753 461
APR-SEP 695.1 81 943.3 110 487.6 57 855 539
JAN-JUL 1378.9 81 1758.5 103 1156.0 68 1703 1440 165.53 83
JAN-SEP 1474.9 82 1861.8 103 1231.3 68 1805 1518 165.53 83
OCT-SEP 2282.1 90 2669.0 106 2038.5 81 2522
SOUTH SANTIAM - AT WATERLOO APR-AUG 498.0 87 761.8 133 289.4 51 571 297
APR-JUL 478.3 86 734.4 132 277.6 50 558 287
APR-SEP 512.6 87 783.0 133 299.5 51 590 307
JAN-JUL 1202.9 82 1567.2 107 949.6 65 1462 1269 139.98 72
JAN-SEP 1241.8 83 1612.5 108 971.6 65 1494 1289 139.98 72
OCT-SEP 1815.8 85 2186.5 102 1545.6 72 2146
WILLAMETTE - AT SALEM APR-AUG 3750.3 83 5475.1 121 2428.2 53 4539 3194
APR-JUL 3569.9 83 5253.6 121 2305.8 53 4324 3012
APR-SEP 3934.7 83 5704.7 120 2549.4 54 4754 3379
JAN-JUL 8742.8 76 12284.5 107 7109.9 62 11461 11343 1036.18 68
JAN-SEP 9117.5 77 12700.5 107 7473.3 63 11890 11710 1036.18 68
OCT-SEP 12677.7 78 16260.8 100 11033.5 68 16315
CLACKAMAS - AT ESTACADA APR-AUG 558.9 83 716.1 106 419.3 62 677 464
APR-JUL 505.4 81 661.2 106 375.2 60 624 426
APR-SEP 606.9 83 769.8 105 461.2 63 733 505
JAN-JUL 1111.3 83 1388.9 104 920.8 69 1341 1108 95.53 66
JAN-SEP 1201.6 83 1490.4 103 1011.5 70 1450 1187 95.53 66
OCT-SEP 1745.2 88 2034.0 103 1555.1 79 1975
LEWIS - MERWIN DAM APR-AUG 850.8 88 1144.5 118 609.1 63 969 714
APR-JUL 805.8 91 1090.9 124 568.8 65 881 664
APR-SEP 908.5 84 1216.5 112 655.8 61 1082 757
JAN-JUL 1961.3 91 2429.9 112 1596.0 74 2162 1800 225.92 82
JAN-SEP 2080.8 88 2535.5 107 1689.7 72 2363 1893 225.92 82
OCT-SEP 3365.6 98 3820.3 112 2974.5 87 3417
---------------------Forecast --------------------- ----------Runoff-----------
River Basin Period Probable % Maximum % Minimum % Average PrevYR CurYR %
COWLITZ - MAYFIELD RESERVOIR APR-AUG 1563.6 89 2086.8 118 1142.9 65 1765 1175
APR-JUL 1446.5 88 1948.3 118 1061.1 64 1648 1088
APR-SEP 1649.3 88 2232.9 120 1209.4 65 1864 1240
JAN-JUL 2838.4 89 3616.4 113 2402.8 75 3204 2336 287.86 87
JAN-SEP 3033.6 89 3820.8 112 2580.7 75 3420 2488 287.86 87
OCT-SEP 4976.0 108 5763.3 125 4523.1 98 4624
COWLITZ - AT CASTLE ROCK APR-AUG 2071.6 88 2816.5 119 1539.1 65 2366 1508
APR-JUL 1924.7 87 2648.9 120 1429.7 65 2213 1394
APR-SEP 2171.7 87 3023.0 121 1629.8 65 2504 1590
JAN-JUL 4233.7 91 5422.3 117 3600.1 78 4638 3336 551.11 108
JAN-SEP 4479.0 91 5687.4 115 3853.4 78 4929 3532 551.11 108
OCT-SEP 7290.9 108 8499.3 126 6665.3 99 6739
ROGUE - AT RAYGOLD APR-AUG 591.5 78 815.2 107 375.4 49 759 757
APR-JUL 528.7 77 738.1 107 327.6 48 687 681
APR-SEP 649.5 78 889.6 107 422.5 51 831 833
JAN-JUL 1029.9 71 1468.1 102 757.0 53 1442 1832 86.24 58
JAN-SEP 1153.3 73 1628.6 103 854.6 54 1586 1984 86.24 58
OCT-SEP 1488.0 73 1963.2 97 1189.3 59 2032
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