Northwest River Forecast Center
Water Supply Seasonal Forecasts
Ensemble Date: 2015-01-02 Issued Date: 2015-01-02
Water Year 2015
---------------------Forecast --------------------- ----------Runoff-----------
River Basin Period Probable % Maximum % Minimum % Average PrevYR CurYR %
DONNER UND BLITZEN - NR FRENCHGLEN APR-AUG 61.9 95 92.3 142 36.9 57 65 34
APR-JUL 59.1 95 88.1 142 34.9 56 62 33
APR-SEP 64.4 95 95.0 140 38.9 57 68 36
JAN-JUL 81.7 100 123.7 151 54.5 66 82 48
DUNGENESS - NEAR SEQUIM APR-AUG 99.8 73 141.6 104 82.7 61 136 120
APR-JUL 92.5 77 127.4 106 73.9 62 120 108
APR-SEP 106.9 74 151.5 104 87.5 60 145 128
JAN-JUL 176.4 92 226.5 118 142.6 74 192 172 1.00 35
SKAGIT - NEAR CONCRETE APR-AUG 5051.0 92 6326.9 115 4308.2 78 5519 6633
APR-JUL 4550.0 93 5590.9 114 3790.4 77 4914 5961
APR-SEP 5448.3 92 6870.9 116 4730.6 80 5934 7024
JAN-JUL 6968.2 97 8546.2 119 5920.6 82 7181 8605 47.00 55
COLUMBIA - MICA DAM APR-AUG 10852.3 99 12483.9 114 9638.2 88 10972 11186
APR-JUL 8783.7 100 9970.5 114 7683.1 88 8750 9059
APR-SEP 11907.9 98 13994.9 116 10536.3 87 12090 12408
JAN-JUL 9535.8 100 10758.0 113 8462.7 89 9514 9817 29.00 110
COLUMBIA - REVELSTOKE DAM APR-AUG 15169.1 98 17526.6 113 13534.9 87 15509 15801
APR-JUL 12487.8 99 14104.7 112 11117.8 88 12632 13070
APR-SEP 16639.5 98 19449.7 115 14717.6 87 16985 17486
JAN-JUL 13532.1 99 15200.1 111 12160.8 89 13671 14066 48.00 135
COLUMBIA - ARROW LAKES (HUGH KEENLEYSIDE DAM)APR-AUG 20795.9 95 24457.5 111 18576.5 85 21975 22207
APR-JUL 17503.3 95 20310.0 111 15425.8 84 18338 18862
APR-SEP 22882.6 96 26761.6 112 20419.4 85 23944 24195
JAN-JUL 19650.2 96 22463.5 110 17552.4 86 20381 20367 50.00 72
KOOTENAI - LIBBY DAM APR-AUG 5848.1 99 7151.7 122 4673.2 79 5885 6673
APR-JUL 5283.4 99 6552.4 123 4225.5 79 5342 6197
APR-SEP 6228.1 100 7482.0 120 4957.0 79 6254 7018
JAN-JUL 6012.6 100 7289.4 121 5054.6 84 6002 6780 14.00 65
KOOTENAI - AT LEONIA APR-AUG 7182.1 100 8765.1 122 5887.7 82 7200 8259
APR-JUL 6576.7 99 8088.1 122 5362.4 81 6616 7704
APR-SEP 7584.5 100 9432.5 124 6217.6 82 7610 8672
JAN-JUL 7727.5 101 9256.4 121 6444.2 85 7619 8650 22.00 75
---------------------Forecast --------------------- ----------Runoff-----------
River Basin Period Probable % Maximum % Minimum % Average PrevYR CurYR %
MOYIE - AT EASTPORT APR-AUG 407.8 107 517.6 135 289.9 76 382 442
APR-JUL 397.9 106 504.7 135 281.8 75 374 435
APR-SEP 415.0 107 525.7 136 296.3 77 387 447
JAN-JUL 447.1 107 557.3 133 345.7 83 418 469 1.00 98
KOOTENAI - AT BONNERS FERRY APR-AUG 7847.8 100 9583.6 122 6443.4 82 7837 8950
APR-JUL 7253.9 100 8903.1 123 5903.9 82 7240 8399
APR-SEP 8276.4 100 10334.7 125 6795.4 82 8256 9353
JAN-JUL 8523.7 102 10200.5 123 7018.2 84 8317 9350 25.00 81
DUNCAN - DUNCAN DAM APR-AUG 1906.8 95 2241.9 112 1701.7 85 2008 2081
APR-JUL 1562.5 94 1895.5 114 1334.6 80 1662 1773
APR-SEP 2068.2 94 2445.4 112 1858.7 85 2189 2259
JAN-JUL 1714.8 95 2079.1 116 1476.0 82 1799 1894 4.00 75
KOOTENAI - KOOTENAY L AT QUEENS BAY APR-AUG 14668.4 99 17878.4 121 12322.7 83 14778 16072
APR-JUL 13437.3 100 16259.0 121 11232.9 83 13474 14867
APR-SEP 15440.8 99 19076.8 122 12976.4 83 15590 16845
JAN-JUL 15560.5 101 18569.5 121 13138.6 86 15355 16544 44.00 78
SLOCAN - NEAR CRESCENT VALLEY APR-AUG 1900.4 105 2232.2 123 1601.8 88 1814 1792
APR-JUL 1777.3 107 2053.6 124 1434.5 86 1660 1671
APR-SEP 2002.3 105 2334.0 123 1674.4 88 1905 1861
JAN-JUL 2018.7 110 2255.9 123 1628.5 89 1838 1825 6.00 107
COLUMBIA - AT BIRCHBANK APR-AUG 37977.4 98 43155.8 111 33696.0 87 38910 40895
APR-JUL 33076.2 98 37906.3 112 29095.8 86 33840 36187
APR-SEP 40472.1 97 47178.9 113 36011.3 86 41747 43823
JAN-JUL 37850.3 100 43223.2 114 33472.1 88 37905 39654 106.00 83
BLACKFOOT - NEAR BONNER APR-AUG 1102.7 144 1555.3 204 780.0 102 764 1098
APR-JUL 1028.1 143 1471.2 204 729.4 101 720 1045
APR-SEP 1150.5 144 1612.6 201 820.6 102 801 1135
JAN-JUL 1175.4 140 1582.5 189 887.7 106 838 1161 2.00 62
CLARK FORK - ABOVE BLACKFOOT APR-AUG 860.6 150 1138.2 199 601.9 105 573 782
APR-JUL 800.6 151 1061.7 200 572.1 108 531 726
APR-SEP 917.4 149 1199.6 194 651.7 106 617 831
JAN-JUL 982.3 143 1265.2 184 793.8 115 689 894 4.00 87
---------------------Forecast --------------------- ----------Runoff-----------
River Basin Period Probable % Maximum % Minimum % Average PrevYR CurYR %
CLARK FORK - ABOVE MISSOULA APR-AUG 2010.7 150 2529.4 189 1393.6 104 1337 1879
APR-JUL 1896.0 152 2383.7 191 1314.2 105 1251 1770
APR-SEP 2115.3 149 2650.7 187 1478.5 104 1418 1965
JAN-JUL 2242.5 147 2792.8 183 1671.9 109 1527 2054 6.00 76
BITTERROOT - NEAR DARBY APR-AUG 579.0 129 805.9 179 414.1 92 450 732
APR-JUL 543.5 129 763.3 182 383.4 91 420 692
APR-SEP 605.3 128 834.7 176 435.7 92 473 754
JAN-JUL 609.8 129 865.2 184 447.4 95 471 762 1.00 72
BITTERROOT - NEAR MISSOULA APR-AUG 1427.1 120 1844.4 156 1053.2 89 1185 1743
APR-JUL 1370.2 121 1775.1 157 997.1 88 1131 1681
APR-SEP 1487.8 120 1902.8 154 1106.5 89 1238 1789
JAN-JUL 1563.0 119 2054.3 156 1224.4 93 1315 1912 5.00 97
CLARK FORK - BELOW MISSOULA APR-AUG 3414.3 135 4239.4 167 2467.9 97 2535 3634
APR-JUL 3246.2 135 4011.8 167 2329.9 97 2397 3454
APR-SEP 3598.3 135 4428.8 166 2618.6 98 2668 3762
JAN-JUL 3898.6 136 4784.3 167 2883.5 101 2860 3978 11.00 84
CLARK FORK - AT ST REGIS APR-AUG 4446.3 133 5474.1 164 3192.0 95 3345 4609
APR-JUL 4235.8 134 5183.0 164 2976.5 94 3162 4382
APR-SEP 4647.1 132 5703.9 162 3387.2 96 3514 4783
JAN-JUL 4932.4 130 6272.6 165 3814.3 100 3807 5078 15.00 84
NF FLATHEAD - NEAR COLUMBIA FALLS APR-AUG 1500.1 92 1954.6 120 1153.8 71 1631 2212
APR-JUL 1409.1 92 1850.4 120 1078.5 70 1536 2110
APR-SEP 1561.0 92 2020.9 119 1207.5 71 1696 2269
JAN-JUL 1608.8 95 2047.8 121 1312.7 77 1697 2260 5.00 100
MF FLATHEAD - NEAR WEST GLACIER APR-AUG 1640.8 104 2032.0 129 1348.6 85 1578 2268
APR-JUL 1569.5 105 1920.2 128 1282.3 85 1500 2164
APR-SEP 1689.2 104 2086.9 128 1401.5 86 1631 2316
JAN-JUL 1730.7 105 2156.3 130 1467.4 89 1653 2290 4.00 88
SF FLATHEAD - HUNGRY HORSE DAM APR-AUG 2018.5 104 2487.3 128 1631.5 84 1936 2682
APR-JUL 1948.8 104 2421.0 129 1569.0 84 1871 2600
APR-SEP 2085.3 105 2551.9 128 1687.5 85 1988 2726
JAN-JUL 2185.1 104 2732.8 130 1808.5 86 2098 2781 5.00 78
---------------------Forecast --------------------- ----------Runoff-----------
River Basin Period Probable % Maximum % Minimum % Average PrevYR CurYR %
FLATHEAD - AT COLUMBIA FALLS APR-AUG 5338.2 101 6634.0 126 4342.2 82 5270 7132
APR-JUL 5115.5 102 6303.5 126 4092.2 82 5021 6834
APR-SEP 5523.0 101 6824.3 125 4542.0 83 5450 7293
JAN-JUL 5697.2 102 7055.0 126 4738.1 85 5592 7284 15.00 89
FLATHEAD - KERR DAM APR-AUG 6371.6 105 7954.3 131 4984.9 82 6076 8418
APR-JUL 6123.5 105 7572.9 130 4739.1 82 5807 8060
APR-SEP 6594.9 105 8195.5 131 5283.8 84 6270 8599
JAN-JUL 6961.8 106 8573.4 130 5749.4 87 6575 8841 23.00 104
CLARK FORK - NEAR PLAINS APR-AUG 11312.8 117 13823.9 143 8635.9 89 9691 13050
APR-JUL 10687.1 116 13047.5 142 8173.8 89 9208 12466
APR-SEP 11800.1 117 14342.8 142 9111.1 90 10078 13417
JAN-JUL 12278.8 115 15074.9 141 9929.0 93 10716 13905 39.00 90
CLARK FORK - CABINET GORGE DAM APR-AUG 12948.1 118 15843.8 145 9931.7 91 10945 14384
APR-JUL 12193.7 117 14934.6 144 9378.4 90 10391 13758
APR-SEP 13541.8 119 16510.4 145 10407.8 91 11376 14758
JAN-JUL 14196.2 116 17407.5 142 11529.4 94 12242 15414 29.00 56
PRIEST - NEAR PRIEST RIVER APR-AUG 657.3 81 855.6 106 466.5 58 809 879
APR-JUL 612.8 78 803.7 103 447.0 57 782 848
APR-SEP 692.2 83 898.1 108 489.4 59 831 896
JAN-JUL 1016.8 101 1300.4 130 824.3 82 1002 1037 4.00 76
PEND OREILLE - ALBENI FALLS DAM APR-AUG 13608.7 110 16346.1 132 10453.9 85 12354 16220
APR-JUL 12889.8 109 15568.2 132 9907.3 84 11777 15511
APR-SEP 14188.9 111 16952.5 132 10964.1 86 12815 16703
JAN-JUL 15357.0 108 18566.5 131 12543.0 88 14189 17802 40.00 61
COLUMBIA - AT INTL BOUNDARY APR-AUG 51886.5 99 58667.8 112 46363.5 88 52448 57929
APR-JUL 45959.8 98 52430.5 112 41145.7 88 46746 52400
APR-SEP 54937.2 98 63536.6 114 50036.3 90 55784 61373
JAN-JUL 53479.1 100 60519.6 113 48506.7 91 53529 58402 150.00 74
KETTLE - AT LAURIER APR-AUG 1979.4 107 2624.9 142 1443.5 78 1845 1743
APR-JUL 1945.1 108 2521.2 140 1415.5 79 1795 1708
APR-SEP 2007.8 107 2650.9 141 1465.0 78 1875 1766
JAN-JUL 2139.3 109 2863.9 147 1612.8 83 1954 1814 5.00 152
---------------------Forecast --------------------- ----------Runoff-----------
River Basin Period Probable % Maximum % Minimum % Average PrevYR CurYR %
NF COEUR D ALENE - AT ENAVILLE APR-AUG 733.1 101 1025.1 142 449.9 62 723 827
APR-JUL 712.4 102 1001.0 143 431.9 62 701 808
APR-SEP 749.5 101 1045.1 141 465.9 63 739 842
JAN-JUL 1136.0 102 1468.1 132 864.9 78 1110 1248 4.00 43
ST JOE - AT CALDER APR-AUG 1053.6 96 1421.1 130 708.7 65 1093 1314
APR-JUL 1013.2 96 1375.3 130 677.2 64 1055 1277
APR-SEP 1081.9 97 1450.5 130 732.4 65 1120 1337
JAN-JUL 1393.1 101 1790.2 130 1040.9 75 1380 1639 4.00 55
COEUR D ALENE - COEUR D ALENE LAKE APR-AUG 2385.4 98 3255.4 134 1511.9 62 2430 2767
APR-JUL 2329.6 98 3187.0 134 1470.1 62 2383 2726
APR-SEP 2424.5 98 3305.6 134 1551.8 63 2468 2792
JAN-JUL 3735.8 100 5098.7 137 2883.2 77 3735 4209 12.00 39
SPOKANE - AT SPOKANE APR-AUG 2452.3 99 3378.8 136 1562.1 63 2480 2861
APR-JUL 2378.8 99 3279.5 136 1502.7 62 2410 2796
APR-SEP 2502.3 99 3438.8 136 1609.2 64 2530 2900
JAN-JUL 3805.2 101 5201.1 138 2933.1 78 3770 4344 13.00 41
COLUMBIA - GRAND COULEE DAM APR-AUG 57116.4 101 64826.8 114 50122.2 88 56763 62620
APR-JUL 51196.8 100 58285.4 114 44607.0 87 51015 57073
APR-SEP 60811.0 101 69301.2 115 54236.2 90 60110 66104
JAN-JUL 60280.2 101 68833.9 115 53907.0 90 59599 65006 176.00 74
SIMILKAMEEN - NEAR HEDLEY APR-AUG 1097.0 118 1475.8 158 849.9 91 933 1278
APR-JUL 1063.5 118 1408.9 156 822.7 91 903 1248
APR-SEP 1120.6 118 1504.6 158 869.9 91 953 1296
JAN-JUL 1208.9 119 1521.8 150 962.0 95 1013 1364 3.00 86
SIMILKAMEEN - NEAR NIGHTHAWK APR-AUG 1426.5 114 1966.2 157 1052.0 84 1252 1609
APR-JUL 1380.8 115 1852.5 155 1032.7 86 1198 1562
APR-SEP 1478.9 115 2012.5 157 1077.5 84 1283 1637
JAN-JUL 1541.4 115 2032.7 152 1194.9 89 1341 1718 4.00 88
OKANOGAN - NEAR TONASKET APR-AUG 1674.5 110 2304.4 152 1201.1 79 1516 1973
APR-JUL 1590.4 112 2139.2 151 1155.3 81 1419 1889
APR-SEP 1765.0 111 2388.2 151 1250.4 79 1583 2023
JAN-JUL 1874.5 112 2516.6 151 1451.6 87 1668 2176 5.00 67
---------------------Forecast --------------------- ----------Runoff-----------
River Basin Period Probable % Maximum % Minimum % Average PrevYR CurYR %
METHOW - NEAR PATEROS APR-AUG 908.2 104 1271.2 146 663.8 76 872 849
APR-JUL 873.1 105 1218.7 146 634.7 76 833 810
APR-SEP 932.5 104 1297.7 145 684.7 77 895 871
JAN-JUL 973.6 105 1329.2 144 748.2 81 923 889 3.00 115
STEHEKIN - AT STEHEKIN APR-AUG 685.4 91 864.0 115 549.5 73 753 850
APR-JUL 630.5 92 782.8 115 497.1 73 682 776
APR-SEP 715.9 91 908.8 115 573.4 72 791 887
JAN-JUL 754.5 97 943.6 122 599.3 77 776 864 3.00 105
CHELAN - LAKE CHELAN DAM APR-AUG 954.6 88 1294.6 120 743.4 69 1080 1133
APR-JUL 899.9 90 1206.7 121 667.7 67 1000 1044
APR-SEP 997.7 89 1340.8 120 765.7 69 1116 1170
JAN-JUL 1145.2 97 1511.8 128 868.4 74 1178 1206 4.00 74
WENATCHEE - AT PESHASTIN APR-AUG 1388.8 96 1706.1 118 1037.2 72 1446 1568
APR-JUL 1295.7 95 1611.0 118 993.8 73 1368 1488
APR-SEP 1437.2 97 1770.5 119 1067.6 72 1489 1610
JAN-JUL 1670.8 98 2013.1 118 1304.8 77 1700 1827 8.00 81
COLUMBIA - BLO ROCK ISLAND DAM APR-AUG 62377.8 101 71661.1 116 54953.9 89 61742 67335
APR-JUL 56342.7 101 64878.0 116 48994.7 88 55772 61628
APR-SEP 66226.9 102 75831.7 116 58244.7 89 65202 70873
JAN-JUL 66564.2 102 76147.6 117 59211.9 91 65319 70552 179.00 68
COLUMBIA - BLO PRIEST RAPIDS DAM APR-AUG 62376.9 99 71670.7 113 54963.5 87 63174 69132
APR-JUL 56338.5 99 64868.4 114 49001.6 86 57020 63215
APR-SEP 66229.7 99 75835.9 114 58256.8 87 66778 72778
JAN-JUL 66642.2 99 76229.4 113 59302.6 88 67248 72661 176.00 61
YAKIMA - NEAR MARTIN APR-AUG 99.4 82 141.9 117 72.9 60 121 136
APR-JUL 96.0 83 131.7 114 69.8 60 116 128
APR-SEP 104.8 83 149.7 119 78.7 62 126 140
JAN-JUL 152.3 88 199.8 115 127.5 74 173 196 1.00 50
KACHESS - NEAR EASTON APR-AUG 86.6 80 120.0 111 61.4 57 108 121
APR-JUL 85.2 82 110.8 107 60.2 58 104 118
APR-SEP 88.4 78 124.2 110 64.7 57 113 128
JAN-JUL 139.9 89 182.2 116 115.4 73 157 181 1.00 56
---------------------Forecast --------------------- ----------Runoff-----------
River Basin Period Probable % Maximum % Minimum % Average PrevYR CurYR %
CLE ELUM - NEAR ROSLYN APR-AUG 330.6 81 445.1 110 243.6 60 406 450
APR-JUL 323.8 84 429.2 112 237.9 62 384 424
APR-SEP 335.9 81 467.8 112 252.2 60 417 461
JAN-JUL 455.7 90 572.0 113 375.6 75 504 556 2.00 52
YAKIMA - NEAR HORLICK APR-AUG 765.5 83 1035.7 113 554.2 60 920 1003
APR-JUL 728.3 83 967.3 110 530.2 60 879 964
APR-SEP 807.1 84 1117.0 116 594.8 62 966 1042
JAN-JUL 1214.5 94 1537.1 119 949.4 73 1293 1459 7.00
BUMPING - BELOW BUMPING DAM APR-AUG 106.0 88 141.9 118 80.4 67 120 132
APR-JUL 102.0 89 136.5 120 77.2 68 114 125
APR-SEP 110.2 89 148.8 120 84.0 68 124 136
JAN-JUL 143.0 92 185.7 120 111.3 72 155 171 1.00 72
TIETON - AT TIETON DAM APR-AUG 187.8 92 240.0 117 156.1 76 205 235
APR-JUL 168.2 90 213.0 114 137.5 74 187 213
APR-SEP 204.2 93 257.2 117 170.8 78 220 250
JAN-JUL 251.8 96 314.4 120 207.6 79 263 299 2.00 83
NACHES - NEAR NACHES APR-AUG 660.9 88 882.9 117 493.9 66 752 821
APR-JUL 628.8 88 852.0 119 461.2 65 715 774
APR-SEP 687.8 88 922.5 118 526.8 67 784 853
JAN-JUL 938.0 95 1201.8 122 720.7 73 989 1094
YAKIMA - NEAR PARKER APR-AUG 1598.1 90 2126.8 120 1275.7 72 1767 1924
APR-JUL 1512.5 90 2001.5 119 1190.2 71 1686 1813
APR-SEP 1704.8 91 2274.0 122 1379.9 74 1864 2019
JAN-JUL 2483.5 98 3169.4 125 1974.4 78 2531 2675 14.00 57
YAKIMA - AT KIONA APR-AUG 919.8 97 1438.4 152 642.7 68 944 1089
APR-JUL 810.8 95 1310.5 154 551.7 65 852 938
APR-SEP 1022.9 97 1555.7 148 733.5 70 1050 1264
JAN-JUL 1648.5 99 2314.2 139 1150.7 69 1660 1678 16.00 68
SNAKE - JACKSON LAKE AT DAM APR-AUG 866.0 107 1070.1 132 669.7 83 811 905
APR-JUL 818.2 107 1008.1 132 633.9 83 765 847
APR-SEP 904.2 107 1107.5 131 699.2 83 845 944
JAN-JUL 905.8 105 1095.3 127 719.7 84 861 961 1.00 30
---------------------Forecast --------------------- ----------Runoff-----------
River Basin Period Probable % Maximum % Minimum % Average PrevYR CurYR %
GREYS - AB RES NR ALPINE APR-AUG 425.9 127 535.1 159 319.2 95 336 433
APR-JUL 391.3 127 487.8 159 294.4 96 307 394
APR-SEP 452.8 126 564.6 158 338.9 95 358 459
JAN-JUL 441.9 128 547.8 158 350.8 101 346 427 1.00 83
SALT - ABV PALISADES RES NR ETNA APR-AUG 411.1 123 525.5 157 266.9 80 335 347
APR-JUL 369.3 123 478.3 159 237.2 79 301 305
APR-SEP 455.1 123 574.9 155 298.2 81 370 386
JAN-JUL 461.1 122 587.5 155 340.8 90 379 379 2.00 79
SNAKE - NEAR IRWIN APR-AUG 3951.8 120 4779.9 146 2874.9 88 3285 4030
APR-JUL 3630.6 121 4409.1 146 2648.1 88 3011 3665
APR-SEP 4204.4 120 5091.9 145 3125.4 89 3501 4297
JAN-JUL 4151.5 119 4969.0 143 3181.3 91 3487 4103 8.00 51
SNAKE - NEAR HEISE APR-AUG 4234.9 120 5104.6 144 3090.4 87 3541 4309
APR-JUL 3870.6 120 4701.8 145 2838.3 88 3237 3911
APR-SEP 4513.1 119 5450.5 144 3370.7 89 3785 4571
JAN-JUL 4480.8 118 5356.4 141 3439.3 91 3790 4453 10.00 55
FALL RIVER - NEAR CHESTER APR-AUG 389.3 111 516.5 147 277.6 79 351 362
APR-JUL 370.7 112 502.4 152 270.6 82 331 328
APR-SEP 412.4 110 545.3 145 295.0 79 375 395
JAN-JUL 469.3 113 598.9 144 370.2 89 416 420 2.00 71
HENRYS FORK - AT ST. ANTHONY APR-AUG 725.6 96 979.7 129 494.5 65 759 646
APR-JUL 666.6 99 901.9 134 454.7 68 672 550
APR-SEP 786.9 94 1046.9 125 528.3 63 836 718
JAN-JUL 923.9 96 1163.7 121 710.5 74 964 804 6.00 61
TETON - NEAR ST. ANTHONY APR-AUG 502.1 120 639.3 153 364.1 87 419 419
APR-JUL 447.2 120 580.0 155 319.4 86 373 369
APR-SEP 545.2 119 690.5 151 401.2 88 457 461
JAN-JUL 527.5 117 663.5 147 397.8 88 451 441 2.00 85
HENRYS FORK - AT REXBURG APR-AUG 1414.6 88 1834.3 114 992.0 62 1607 1225
APR-JUL 1308.7 93 1656.3 118 922.4 66 1403 1077
APR-SEP 1516.3 85 1966.0 110 1078.5 60 1785 1333
JAN-JUL 1633.8 90 2046.8 112 1267.8 70 1824 1424 6.00 43
---------------------Forecast --------------------- ----------Runoff-----------
River Basin Period Probable % Maximum % Minimum % Average PrevYR CurYR %
WILLOW CREEK - NEAR RIRIE APR-AUG 78.7 118 120.8 180 42.3 63 67 25
APR-JUL 77.0 117 118.4 179 42.3 64 66 24
APR-SEP 79.8 116 123.5 179 42.9 62 69 25
JAN-JUL 87.5 114 135.9 176 50.9 66 77 37
SNAKE - NEAR SHELLEY APR-AUG 5268.2 113 6555.1 141 3748.1 81 4643 4955
APR-JUL 4848.3 116 6017.2 144 3441.3 83 4165 4370
APR-SEP 5640.9 112 6973.5 138 4125.4 82 5051 5319
JAN-JUL 5786.4 118 6932.9 141 4379.4 89 4917 5230 17.00 68
PORTNEUF - AT TOPAZ APR-AUG 62.1 84 80.6 109 45.2 61 74 42
APR-JUL 54.2 85 70.9 111 39.5 62 64 37
APR-SEP 69.5 86 89.4 110 51.3 63 81 46
JAN-JUL 77.9 84 96.6 104 60.6 65 93 58
SNAKE - AT AMERICAN FALLS DAM APR-AUG 3626.6 135 4940.3 183 1993.7 74 2696 2794
APR-JUL 3518.9 133 4758.3 180 2025.9 76 2650 2580
APR-SEP 3808.8 136 5185.8 185 2136.2 76 2806 2901
JAN-JUL 4707.2 123 6005.7 156 3253.8 85 3841 3590 16.00 41
SNAKE - AT MILNER APR-AUG 232.1 24 232.1 24 232.1 24 955 260
APR-JUL 204.9 23 207.9 23 204.9 23 895 247
APR-SEP 232.1 23 232.1 23 232.1 23 1006 260
JAN-JUL 233.7 15 233.7 15 233.7 15 1519 323 4.00 19
SALMON FALLS CREEK - NR SAN JACINTO APR-AUG 62.6 87 127.5 177 30.3 42 72 31
APR-JUL 60.9 87 125.5 179 29.6 42 70 30
APR-SEP 64.1 87 130.4 176 31.6 43 74 33
JAN-JUL 79.6 88 145.7 162 45.8 51 90 46
BIG LOST - AT HOWELL RANCH NEAR CHILLY APR-AUG 176.8 103 248.7 145 95.8 56 172 87
APR-JUL 161.8 102 232.1 146 88.9 56 159 80
APR-SEP 184.6 103 263.4 146 100.9 56 180 92
JAN-JUL 170.2 98 243.3 140 108.5 62 174 96
BIG LOST - MACKAY RESERVOIR NEAR MACKAY APR-AUG 166.3 121 249.2 181 91.9 67 138 64
APR-JUL 147.6 119 211.4 170 85.2 69 124 54
APR-SEP 183.2 121 268.6 178 98.8 65 151 73
JAN-JUL 166.6 108 230.7 149 113.4 73 155 82 1.00 96
---------------------Forecast --------------------- ----------Runoff-----------
River Basin Period Probable % Maximum % Minimum % Average PrevYR CurYR %
BIG WOOD - AT HAILEY APR-AUG 240.1 96 358.1 143 158.0 63 251 154
APR-JUL 223.6 95 333.1 142 146.5 62 235 140
APR-SEP 254.0 97 373.9 142 167.6 64 263 162
JAN-JUL 260.8 98 378.0 142 178.7 67 266 170 1.00 105
BIG WOOD - MAGIC DAM APR-AUG 229.0 89 418.7 162 109.2 42 258 82
APR-JUL 225.1 90 396.3 159 106.9 43 250 75
APR-SEP 232.7 88 428.9 162 116.9 44 264 86
JAN-JUL 280.1 96 463.2 159 140.1 48 292 110
LITTLE WOOD - NEAR CAREY APR-AUG 57.2 71 113.7 140 26.1 32 81 27
APR-JUL 55.0 71 107.3 139 25.3 33 77 24
APR-SEP 59.9 72 118.0 142 27.5 33 83 28
JAN-JUL 72.4 77 122.3 130 40.4 43 94 34
SNAKE - AT KING HILL APR-AUG 1904.9 61 2135.7 69 1748.2 56 3106 2194
APR-JUL 1543.4 59 1758.5 67 1391.1 53 2617 1759
APR-SEP 2288.4 63 2527.5 70 2125.6 59 3627 2619
JAN-JUL 2592.3 58 2816.1 63 2439.9 55 4465 2872 27.00 44
BRUNEAU - NEAR HOT SPRINGS APR-AUG 147.1 78 233.5 124 96.9 52 188 72
APR-JUL 144.3 79 225.8 123 96.4 53 183 67
APR-SEP 149.3 78 239.0 124 97.5 51 192 75
JAN-JUL 194.9 86 297.4 132 136.2 60 226 89
SNAKE - BELOW SWAN FALLS APR-AUG 2169.7 71 2433.0 80 1986.3 65 3035 2111
APR-JUL 1795.1 69 2049.4 79 1617.6 62 2609 1548
APR-SEP 2576.9 73 2853.3 81 2388.8 68 3514 2576
JAN-JUL 3043.0 67 3309.2 73 2864.0 63 4560 2721 28.00 44
OWYHEE - NEAR GOLD CREEK APR-AUG 12.2 58 30.8 147 5.9 28 21 5
APR-JUL 11.9 54 30.4 138 5.7 26 22 5
APR-SEP 12.3 59 31.2 149 6.0 28 21 5
JAN-JUL 20.6 67 42.6 137 11.9 39 31 8
OWYHEE - BELOW OWYHEE DAM APR-AUG 189.4 49 472.2 121 96.9 25 390 67
APR-JUL 179.3 48 455.1 121 88.6 24 375 57
APR-SEP 198.7 49 487.0 120 105.1 26 405 448
JAN-JUL 494.6 73 877.1 130 286.7 42 677 171 1.00 24
---------------------Forecast --------------------- ----------Runoff-----------
River Basin Period Probable % Maximum % Minimum % Average PrevYR CurYR %
SF BOISE - ANDERSON RANCH DAM APR-AUG 517.5 104 699.6 141 334.6 67 496 392
APR-JUL 499.8 105 669.7 140 320.8 67 477 369
APR-SEP 533.7 105 718.7 141 348.6 68 510 409
JAN-JUL 605.4 108 808.0 144 414.9 74 562 470 1.00 50
BOISE - LUCKY PEAK DAM APR-AUG 1371.8 104 1847.1 140 886.0 67 1316 1132
APR-JUL 1317.5 104 1773.9 141 846.4 67 1261 1074
APR-SEP 1418.5 104 1905.2 140 922.5 68 1361 1176
JAN-JUL 1684.1 106 2318.2 146 1184.4 74 1592 1408 3.00 43
BOISE - NEAR PARMA APR-AUG 618.8 117 1136.0 214 488.3 92 530 260
APR-JUL 565.1 117 1083.6 225 460.1 96 481 225
APR-SEP 670.5 114 1192.3 203 505.9 86 588 313
JAN-JUL 824.7 103 1397.1 174 698.7 87 803 376 4.00 50
MALHEUR - NEAR DREWSEY APR-AUG 53.5 77 113.6 165 24.7 36 69 22
APR-JUL 52.8 78 112.7 166 24.0 35 68 22
APR-SEP 54.2 77 116.9 167 25.3 36 70 22
JAN-JUL 107.2 86 193.4 155 69.9 56 125 55
NF MALHEUR - AT BEULAH APR-AUG 48.3 81 85.9 143 27.3 46 60 34
APR-JUL 46.5 82 81.5 143 26.0 46 57 32
APR-SEP 50.5 82 89.7 145 29.0 47 62 37
JAN-JUL 82.3 91 126.3 140 61.0 68 90 53
DEADWOOD - BELOW DEADWOOD RES APR-AUG 131.9 103 168.1 131 93.2 73 128 130
APR-JUL 126.4 103 162.9 132 89.7 73 123 125
APR-SEP 135.8 96 171.5 121 96.3 68 142 134
JAN-JUL 142.4 102 185.7 133 106.7 76 140 146
NF PAYETTE - CASCADE DAM APR-AUG 475.7 101 613.5 131 299.9 64 470 412
APR-JUL 457.4 99 590.7 128 290.8 63 461 403
APR-SEP 494.9 101 635.7 130 311.1 64 489 426
JAN-JUL 542.2 95 706.1 124 373.4 66 569 554 2.00 68
PAYETTE - NEAR HORSESHOE BEND APR-AUG 1653.3 107 2164.4 140 1052.5 68 1544 1428
APR-JUL 1574.5 106 2060.8 139 1008.7 68 1485 1367
APR-SEP 1727.5 108 2228.1 139 1099.6 68 1606 1479
JAN-JUL 1860.6 101 2513.3 136 1350.4 73 1849 1788 5.00 56
---------------------Forecast --------------------- ----------Runoff-----------
River Basin Period Probable % Maximum % Minimum % Average PrevYR CurYR %
PAYETTE - NEAR EMMETT APR-AUG 1351.2 108 1894.9 152 859.5 69 1248 1182
APR-JUL 1226.3 107 1752.6 152 774.3 67 1151 1086
APR-SEP 1437.9 110 1990.6 152 934.3 71 1311 1230
JAN-JUL 1523.1 97 2279.8 144 1092.7 69 1578 1437 5.00 49
WEISER - NEAR WEISER APR-AUG 382.2 99 553.0 143 262.7 68 387 275
APR-JUL 364.2 98 534.9 144 242.2 65 371 260
APR-SEP 393.9 99 566.5 142 275.4 69 398 282
JAN-JUL 700.1 106 985.1 149 494.6 75 663 498 2.00 43
SNAKE - AT WEISER APR-AUG 4906.7 87 6321.4 112 3762.1 67 5633 3585
APR-JUL 4284.1 86 5703.0 114 3226.2 64 5010 3043
APR-SEP 5568.6 88 6996.3 110 4329.5 68 6335 4089
JAN-JUL 6588.5 78 8487.6 101 5474.0 65 8404 5114 40.00 42
BURNT - NR HEREFORD APR-AUG 31.7 93 55.1 162 15.4 45 34 15
APR-JUL 31.3 95 54.0 164 15.1 46 33 14
APR-SEP 32.2 92 56.1 160 16.1 46 35 16
JAN-JUL 61.7 112 85.0 154 42.6 78 55 39
POWDER - MASON DAM APR-AUG 47.5 88 84.8 157 21.0 39 54 37
APR-JUL 46.4 86 83.1 154 20.6 38 54 36
APR-SEP 48.2 89 86.8 161 21.6 40 54 37
JAN-JUL 72.6 104 103.2 147 47.8 68 70 55
EAGLE CREEK - ABOVE SKULL CK APR-AUG 185.6 108 238.4 139 126.8 74 172 133
APR-JUL 175.5 108 227.1 139 119.1 73 163 124
APR-SEP 191.4 108 245.8 138 132.5 74 178 139
JAN-JUL 199.9 105 260.5 136 144.9 76 191 158
SNAKE - BROWNLEE DAM APR-AUG 5483.6 90 6810.3 111 4111.1 67 6121 3977
APR-JUL 4858.7 89 6165.4 113 3572.9 65 5474 3436
APR-SEP 6150.4 90 7504.6 110 4710.2 69 6853 4498
JAN-JUL 7455.7 82 9467.9 104 6063.8 66 9124 5764 47.00 46
SNAKE - AT HELLS CANYON DAM APR-AUG 5483.6 86 6810.3 106 4111.1 64 6411 4152
APR-JUL 4858.7 84 6165.4 107 3572.9 62 5759 3592
APR-SEP 6150.4 86 7504.6 105 4710.2 66 7148 4681
JAN-JUL 7453.7 78 9465.9 99 6061.8 63 9555 6071 46.00 44
---------------------Forecast --------------------- ----------Runoff-----------
River Basin Period Probable % Maximum % Minimum % Average PrevYR CurYR %
IMNAHA - AT IMNAHA APR-AUG 294.5 109 378.4 141 206.2 77 269 215
APR-JUL 282.5 110 363.1 141 195.4 76 257 202
APR-SEP 303.6 109 388.4 140 215.1 77 278 224
JAN-JUL 343.2 109 443.0 141 265.2 84 314 279 1.00 76
SALMON - AT SALMON APR-AUG 950.6 113 1411.6 167 648.1 77 843 891
APR-JUL 872.8 112 1297.7 167 604.1 78 777 821
APR-SEP 1023.8 114 1501.8 167 695.2 77 901 945
JAN-JUL 1053.7 108 1485.6 153 792.9 81 973 1021 4.00 63
SALMON - AT WHITEBIRD APR-AUG 5972.2 105 7935.4 140 4238.7 75 5686 6576
APR-JUL 5642.8 105 7499.9 140 3979.4 74 5369 6242
APR-SEP 6261.2 105 8262.7 139 4478.9 75 5935 6803
JAN-JUL 6608.1 105 8475.8 135 4888.6 78 6267 7299 19.00 73
GRANDE RONDE - NEAR PERRY APR-AUG 155.9 86 242.8 134 88.2 49 181 128
APR-JUL 154.3 86 239.4 134 85.7 48 179 127
APR-SEP 157.4 86 245.0 134 90.4 49 183 129
JAN-JUL 299.2 105 389.9 137 196.5 69 284 269 1.00 64
LOSTINE - NR LOSTINE APR-AUG 128.9 115 159.2 142 99.2 89 112 137
APR-JUL 121.7 114 150.3 140 93.8 88 107 132
APR-SEP 132.9 116 162.4 141 101.9 89 115 139
JAN-JUL 128.6 110 157.9 135 101.8 87 117 145
GRANDE RONDE - TROY APR-AUG 1225.6 97 1620.5 128 857.7 68 1269 1172
APR-JUL 1154.1 94 1556.0 127 816.3 67 1223 1124
APR-SEP 1270.1 97 1669.1 127 894.0 68 1310 1207
JAN-JUL 1840.5 102 2346.9 130 1301.4 72 1812 2018 9.00 77
SNAKE - LOWER GRANITE DAM APR-AUG 21562.6 102 26416.4 125 16029.5 76 21091 20780
APR-JUL 20262.7 102 24843.4 125 14973.9 75 19848 19715
APR-SEP 22817.1 102 27711.1 124 17113.8 77 22279 21724
JAN-JUL 26991.7 98 33958.4 124 21174.4 77 27440 26942 88.00 46
CLEARWATER - AT OROFINO APR-AUG 5145.5 116 6451.7 145 3834.6 86 4436 5603
APR-JUL 5006.9 116 6246.5 145 3734.1 87 4307 5471
APR-SEP 5262.2 116 6578.9 145 3945.7 87 4538 5680
JAN-JUL 6179.8 116 8138.5 153 4956.8 93 5318 6759 17.00 76
---------------------Forecast --------------------- ----------Runoff-----------
River Basin Period Probable % Maximum % Minimum % Average PrevYR CurYR %
NF CLEARWATER - DWORSHAK DAM APR-AUG 2651.1 106 3426.5 137 2005.8 80 2509 3031
APR-JUL 2568.6 106 3348.5 138 1940.5 80 2419 2942
APR-SEP 2707.6 105 3485.1 135 2056.2 80 2575 3095
JAN-JUL 3509.3 107 4574.7 139 2861.7 87 3289 3893 9.00 48
CLEARWATER - AT SPALDING APR-AUG 8092.2 114 10018.3 141 5924.4 83 7111 9009
APR-JUL 7876.6 114 9747.0 141 5754.3 83 6897 8777
APR-SEP 8244.4 113 10225.2 140 6119.0 84 7278 9151
JAN-JUL 10207.0 113 13337.0 148 8004.6 89 9005 11317 28.00 62
UMATILLA - NEAR GIBBON APR-AUG 74.3 96 101.7 132 51.7 67 77 71
APR-JUL 71.2 96 98.4 133 49.0 66 74 68
APR-SEP 77.0 96 104.8 131 54.1 68 80 73
JAN-JUL 136.0 99 178.6 130 102.8 75 137 162 1.00 65
UMATILLA - AT PENDLETON APR-AUG 158.5 103 222.2 144 92.6 60 154 129
APR-JUL 154.5 102 216.9 144 90.9 60 151 124
APR-SEP 162.1 103 226.5 144 94.6 60 157 133
JAN-JUL 338.4 107 464.7 147 242.2 76 317 339 2.00 51
NF JOHN DAY - AT MONUMENT APR-AUG 575.4 98 788.3 134 356.3 60 590 484
APR-JUL 562.4 97 771.7 133 349.9 60 581 477
APR-SEP 585.2 98 800.4 134 363.9 61 598 488
JAN-JUL 1012.9 110 1309.3 142 648.1 70 920 820 3.00 52
JOHN DAY - AT SERVICE CK APR-AUG 791.6 95 1119.2 135 519.5 63 830 634
APR-JUL 779.6 95 1099.0 134 512.9 63 818 628
APR-SEP 802.1 95 1136.3 135 526.5 63 842 639
JAN-JUL 1422.8 107 1937.4 145 900.4 67 1335 1169 6.00 62
DESCHUTES - AT MOODY NR BIGGS APR-AUG 1600.5 97 1701.8 103 1515.0 92 1649 1604
APR-JUL 1326.2 96 1423.3 103 1245.5 90 1377 1315
APR-SEP 1866.0 97 1972.9 103 1775.3 93 1916 1871
JAN-JUL 2636.8 99 2911.3 109 2468.0 93 2660 2682 30.00 74
COLUMBIA - THE DALLES DAM APR-AUG 88803.3 101 99367.1 114 73918.1 84 87532 94548
APR-JUL 80880.2 101 91098.3 114 66944.3 84 79855 86754
APR-SEP 94241.9 102 105369.5 114 78777.2 85 92704 99511
JAN-JUL 103179.3 102 118380.6 117 87321.2 86 101368 108082 318.00 55
---------------------Forecast --------------------- ----------Runoff-----------
River Basin Period Probable % Maximum % Minimum % Average PrevYR CurYR %
MCKENZIE - NEAR VIDA APR-AUG 986.3 91 1168.5 108 765.3 71 1085 1075
APR-JUL 885.8 91 1055.0 109 668.6 69 971 962
APR-SEP 1078.8 91 1259.9 106 853.1 72 1188 1171
JAN-JUL 1937.9 98 2533.7 128 1522.1 77 1987 2447 22.00 62
NORTH SANTIAM - AT MEHAMA APR-AUG 646.4 82 793.6 101 466.3 59 789 820
APR-JUL 608.5 82 749.3 101 422.0 57 739 772
APR-SEP 705.5 84 836.5 100 495.7 59 837 868
JAN-JUL 1403.2 84 1846.2 111 1089.4 65 1670 2113 16.00 48
SOUTH SANTIAM - AT WATERLOO APR-AUG 507.6 89 743.3 131 365.0 64 568 537
APR-JUL 481.7 87 724.2 131 336.4 61 554 524
APR-SEP 534.7 91 766.6 131 377.7 64 587 548
JAN-JUL 1402.7 96 1866.0 128 1061.3 73 1456 1789 13.00 39
WILLAMETTE - AT SALEM APR-AUG 4163.8 92 5570.1 123 3032.2 67 4524 4639
APR-JUL 3958.3 92 5363.7 125 2771.0 64 4306 4394
APR-SEP 4359.4 92 5801.4 123 3216.2 68 4727 4852
JAN-JUL 11369.6 99 15220.0 132 8846.7 77 11495 13456 153.00 57
CLACKAMAS - AT ESTACADA APR-AUG 638.8 94 801.0 118 462.4 68 678 658
APR-JUL 591.5 95 743.1 119 420.9 67 624 604
APR-SEP 678.4 93 847.0 116 493.5 67 732 707
JAN-JUL 1293.3 96 1657.8 123 974.8 72 1349 1530 12.00 47
LEWIS - MERWIN DAM APR-AUG 831.9 78 1133.5 107 640.0 60 1060 1090
APR-JUL 783.3 79 1064.7 107 595.3 60 992 1022
APR-SEP 910.9 81 1182.7 105 675.4 60 1125 1157
JAN-JUL 2054.3 91 2562.1 113 1524.4 67 2259 2531 21.00 46
COWLITZ - MAYFIELD RESERVOIR APR-AUG 1535.3 88 1990.8 114 1254.0 72 1740 1958
APR-JUL 1385.9 85 1850.1 114 1145.4 71 1624 1844
APR-SEP 1647.4 90 2090.6 114 1327.0 72 1835 2041
JAN-JUL 3071.0 99 3896.5 126 2525.8 82 3098 3816 27.00 50
COWLITZ - AT CASTLE ROCK APR-AUG 2022.6 84 2588.7 108 1618.4 67 2399 2552
APR-JUL 1890.8 85 2428.7 109 1482.9 67 2223 2415
APR-SEP 2136.4 84 2763.6 109 1717.2 68 2532 2655
JAN-JUL 4484.3 98 5687.3 125 3621.2 79 4562 5460 38.00 44
---------------------Forecast --------------------- ----------Runoff-----------
River Basin Period Probable % Maximum % Minimum % Average PrevYR CurYR %
ROGUE - AT RAYGOLD APR-AUG 707.3 93 965.9 127 475.2 63 760 556
APR-JUL 636.9 93 887.0 129 416.2 61 687 488
APR-SEP 774.5 93 1042.3 125 539.4 65 833 621
JAN-JUL 1441.5 99 2039.0 140 993.8 68 1454 1204 12.00 47
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