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Water Supply Forecasts Northwest River Forecast Center Thursday December 21, 2006 at 15:50 GMT Observed precipitation through the 18th Future precip assumed to be normal No snow included Observed runoff through November note: current month runoff based on OBSERVED + ESP to the end of DEC UPPER COLUMBIA BASINS Dec-06 Mid Month ________________Forecast______________ __________Runoff___________ Stream and Station Probable % Maximum % Minimum % Average PrevYr CurYR % COLUMBIA RIVER MICA RESERVOIR INFLOW, BC JAN-JUL 9830.0 102 12400.0 129 7240.0 75 9619. 9079 1031 77 FEB-SEP 13200.0 102 15800.0 122 10700.0 83 12960. 11800 1031 77 APR-SEP 12800.0 102 15400.0 123 10200.0 82 12500. 11360 1031 77 REVELSTOKE, BC JAN-JUL 14300.0 103 16500.0 119 12000.0 86 13880. 12860 1391 72 ARROW LAKES INFLOW JAN-JUL 21400.0 102 24600.0 117 18300.0 87 20960. 18580 2434 76 FEB-SEP 27000.0 102 30200.0 114 23900.0 90 26460. 22700 2434 76 APR-SEP 25700.0 102 28800.0 115 22500.0 90 25110. 21650 2434 76 BIRCHBANK, BC (1) JAN-JUL 41400.0 106 51800.0 133 31000.0 80 38930. 34250 4589 87 APR-SEP 46200.0 106 56600.0 130 35800.0 82 43500. 37220 4589 87 GRAND COULEE, WA (1) JAN-JUL 66700.0 106 84800.0 135 48500.0 77 62900. 54180 8379 101 APR-SEP 67800.0 106 86000.0 134 49700.0 78 63990. 52740 8379 101 ROCK ISLAND DAM BLO, WA (1) JAN-JUL 75600.0 110 95900.0 139 55200.0 80 68910. 58540 9454 105 APR-SEP 76300.0 110 96600.0 139 55900.0 80 69540. 56310 9454 105 THE DALLES NR, OR (1) JAN-JUL 111000.0 103 141000.0 131 81700.0 76 107300. 87690 17440 104 APR-AUG 96700.0 104 126000.0 135 66900.0 72 93090. 73770 17440 104 APR-SEP 102000.0 103 132000.0 134 72700.0 74 98650. 77440 17440 104 KOOTENAI RIVER LIBBY RES INFLOW, MT (1) JAN-JUL 7090.0 112 9310.0 148 4870.0 77 6306. 5187 897 100 APR-AUG 7020.0 112 9240.0 148 4810.0 77 6248. 5084 897 100 APR-SEP 7460.0 112 9680.0 146 5240.0 79 6638. 5340 897 100 LEONIA, ID (1) APR-JUL 7920.0 112 10600.0 151 5200.0 74 7041. 5608 1253 111 APR-SEP 9140.0 112 11900.0 146 6420.0 79 8125. 6276 1253 111 BONNERS FERRY, ID APR-JUL 8570.0 112 10900.0 143 6310.0 83 7619. 5943 1335 112 KOOTENAY RIVER KOOTENAY LAKE INFLOW, BC JAN-JUL 17800.0 111 21900.0 137 13700.0 86 16010. 13420 2169 106 APR-SEP 18300.0 111 22600.0 137 14100.0 86 16450. 13430 2169 106 DUNCAN RIVER DUNCAN RESERVOIR INFLOW, BC JAN-JUL 1970.0 109 2410.0 134 1520.0 84 1800. 1696 202 82 FEB-SEP 2520.0 109 2970.0 129 2080.0 90 2305. 2147 202 82 APR-SEP 2440.0 110 2880.0 129 1990.0 89 2227. 2066 202 82 CLARK FORK BLACKFOOT RIVER ABV, MT APR-SEP 770.0 109 1170.0 166 370.0 53 704. 617 148 87 MISSOULA ABV, MT APR-SEP 1740.0 109 2490.0 156 995.0 62 1595. 1353 302 106 MISSOULA BLO, MT APR-SEP 3210.0 108 4470.0 151 1950.0 66 2962. 2767 566 119 ST. REGIS, MT (1) APR-SEP 4260.0 109 6310.0 162 2210.0 57 3907. 3591 740 119 PLAINS NR, MT (1) APR-SEP 11600.0 105 16400.0 148 6800.0 61 11060. 8624 1914 127 WHITEHORSE RAPIDS, ID (1) APR-SEP 12800.0 103 18300.0 147 7400.0 59 12460. 9321 2148 124 BLACKFOOT RIVER BONNER NR, MT APR-SEP 975.0 109 1330.0 149 615.0 69 892. 736 154 135 BITTERROOT RIVER AT MOUTH, MT APR-SEP 1470.0 108 2030.0 149 910.0 67 1364. 1317 248 128 Dec-06 Mid Month ________________Forecast______________ __________Runoff___________ Stream and Station Probable % Maximum % Minimum % Average PrevYr CurYR % N.F. FLATHEAD RIVE COLUMBIA FALLS NR, MT APR-SEP 1920.0 107 2390.0 133 1450.0 81 1801. 1404 348 171 M.F. FLATHEAD RIVE WEST GLACIER NR, MT APR-SEP 1850.0 106 2290.0 132 1410.0 81 1740. 1418 314 161 S.F. FLATHEAD RIVE HUNGRY HORSE RES IN, MT (1) JAN-JUL 2400.0 108 3220.0 145 1580.0 71 2224. 1817 311 133 APR-SEP 2290.0 108 3110.0 146 1480.0 70 2124. 1692 311 133 UPPER/MIDDLE COLUMBIA BASINS Dec-06 Mid Month ________________Forecast______________ __________Runoff___________ Stream and Station Probable % Maximum % Minimum % Average PrevYr CurYR % FLATHEAD RIVER COLUMBIA FALLS, MT APR-SEP 6210.0 107 7920.0 136 4510.0 77 5825. 4553 940 143 FLATHEAD LAKE INFLOW, MT (1) APR-SEP 7020.0 105 9710.0 145 4340.0 65 6713. 4984 1163 152 PRIEST RIVER PRIEST RIVER, ID (1) APR-JUL 865.0 106 1190.0 146 535.0 66 814. 662 197 139 PEND OREILLE RIVER PEND OREILLE LAKE IN, ID (1) APR-SEP 14500.0 104 20400.0 147 8660.0 62 13910. 10350 2785 135 APR-JUL 13300.0 104 19200.0 151 7420.0 58 12740. 9715 2785 135 BOX CANYON BLO, WA (1) APR-SEP 14900.0 106 19800.0 141 9750.0 69 14090. 10850 2868 136 KETTLE RIVER LAURIER NR, WA APR-SEP 2190.0 111 2710.0 137 1670.0 85 1972. 1569 63 51 COEUR D'ALENE RIVE ENAVILLE, ID (1) APR-SEP 875.0 112 1160.0 149 590.0 76 778. 419 226 137 APR-JUL 830.0 112 1120.0 152 545.0 74 739. 393 226 137 COEUR D'ALENE LAKE IN, ID APR-JUL 2850.0 112 3960.0 155 1750.0 69 2552. 1367 666 124 SPOKANE RIVER SPOKANE, WA (1) APR-SEP 3010.0 110 3200.0 117 2830.0 103 2744. 1623 704 123 ST JOE RIVER CALDER, ID APR-SEP 1360.0 113 1760.0 146 950.0 79 1205. 867 230 134 APR-JUL 1280.0 113 1690.0 149 875.0 77 1136. 814 230 134 OKANAGAN RIVER TONASKET NR, WA (1) APR-SEP 2190.0 124 3150.0 178 1230.0 70 1766. 847 392 168 SIMILKAMEEN RIVER NIGHTHAWK NR, WA (1) APR-JUL 1790.0 133 2560.0 190 1010.0 75 1350. 807 326 234 APR-SEP 1920.0 132 2690.0 186 1140.0 79 1450. 837 326 234 METHOW RIVER PATEROS NR, WA (1) APR-SEP 1330.0 135 1840.0 187 820.0 83 985. 674 137 152 CHELAN RIVER LAKE CHELAN INFLOW, WA (1) APR-SEP 1530.0 129 1720.0 145 1330.0 112 1185. 973 283 182 WENATCHEE RIVER PESHASTIN, WA APR-SEP 2070.0 127 2690.0 165 1450.0 89 1635. 1263 438 145 YAKIMA AND MAINSTEM SNAKE BASINS Dec-06 Mid Month ________________Forecast______________ __________Runoff___________ Stream and Station Probable % Maximum % Minimum % Average PrevYr CurYR % YAKIMA RIVER KEECHELUS LAKE IN, WA (1) APR-SEP 177.0 133 230.0 173 125.0 94 133. 97 70 115 CLE ELUM, WA APR-SEP 1190.0 132 1510.0 167 880.0 97 903. 667 372 127 PARKER NR, WA APR-SEP 2580.0 135 3220.0 168 1940.0 101 1918. 1554 909 149 KACHESS RIVER KACHESS LAKE INFLOW, WA (1) APR-SEP 158.0 132 205.0 171 108.0 90 120. 87 64 133 CLE ELUM RIVER CLE ELUM LAKE INFLOW, WA (1) APR-SEP 595.0 133 745.0 166 445.0 99 448. 353 162 140 NACHES RIVER NACHES NR, WA APR-SEP 1130.0 135 1410.0 168 860.0 103 837. 714 396 211 BUMPING RIVER BUMPING LAKE INFLOW, WA (1) APR-SEP 182.0 136 235.0 175 130.0 97 134. 100 65 179 TIETON RIVER RIMROCK LAKE INFLOW, WA (1) APR-SEP 325.0 134 400.0 165 255.0 105 242. 198 107 168 AHTANUM CREEKS TAMPICO NR, WA APR-SEP 61.0 133 82.0 178 40.0 87 46. 0 SNAKE RIVER JACKSON LAKE INFLOW, WY (1) APR-SEP 910.0 101 1150.0 127 675.0 75 904. 717 96 89 APR-JUL 820.0 101 1060.0 130 585.0 72 815. 639 96 89 PALISADES RES INFLOW, ID (1) APR-JUL 3310.0 99 4390.0 132 2230.0 67 3331. 2288 570 95 HEISE NR, ID APR-JUL 3510.0 99 4690.0 132 2320.0 65 3561. 2472 679 99 SHELLEY NR, ID (1) APR-JUL 4400.0 99 5760.0 130 3040.0 69 4428. 2899 1043 98 BLACKFOOT NR, ID (1) APR-JUL 4430.0 96 5840.0 127 3010.0 65 4604. 0 AMER. FALLS RES IN, ID (1) APR-JUL 3030.0 93 4750.0 147 1300.0 40 3242. 1071 1209 93 MILNER, ID APR-JUL 425.0 35 1770.0 144 300.0 24 1228. 43 124 18 KING HILL, ID (1) APR-JUL 1890.0 62 3270.0 107 505.0 17 3045. 1416 1494 71 MURPHY NR, ID (1) APR-JUL 2020.0 65 3420.0 111 615.0 20 3092. 1399 1520 70 WEISER, ID (1) JAN-JUL 7150.0 73 10300.0 105 4040.0 41 9793. 5271 2279 78 APR-JUL 4210.0 73 7330.0 127 1100.0 19 5765. 3085 2279 78 BROWNLEE RES INFLOW APR-JUL 4740.0 75 8000.0 127 1470.0 23 6313. 3522 2363 76 HELLS CANYON, ID (1) APR-JUL 4850.0 75 8260.0 127 1430.0 22 6493. 3743 2458 80 LOWER GRANITE RES IN, WA (1) JAN-JUL 29300.0 98 40100.0 134 18400.0 61 30020. 23810 5210 98 FEB-SEP 29600.0 97 40500.0 133 18700.0 62 30370. 23940 5210 98 APR-JUL 21000.0 97 31900.0 148 10100.0 47 21550. 16730 5210 98 UPPER SNAKE BASINS Dec-06 Mid Month ________________Forecast______________ __________Runoff___________ Stream and Station Probable % Maximum % Minimum % Average PrevYr CurYR % GREY'S RIVER PALISADES ABV, WY APR-SEP 395.0 100 540.0 137 255.0 65 394. 292 58 112 SALT RIVER ETNA NR, WY APR-JUL 345.0 101 515.0 151 170.0 50 342. 176 101 96 HENRYS FORK ASHTON NR, ID APR-JUL 545.0 95 690.0 121 405.0 71 571. 378 225 85 ST. ANTHONY, ID APR-JUL 725.0 99 990.0 135 460.0 63 734. 382 309 104 REXBURG NR, ID APR-JUL 1500.0 96 1920.0 123 1080.0 69 1559. 394 421 81 FALLS RIVER SQUIRREL NR, ID (1) APR-JUL 365.0 95 450.0 117 280.0 73 386. 187 82 87 TETON RIVER ST. ANTHONY NR, ID APR-JUL 375.0 93 535.0 133 215.0 53 403. 261 101 108 BIG LOST RIVER MACKAY RESERVOIR INFLOW, ID APR-JUL 130.0 92 225.0 158 33.0 23 142. 74 32 78 WILLOW CREEK RIRIE RESERVOIR INFLOW APR-JUL 82.0 95 133.0 155 32.0 37 86. 13 9 87 PORTNEUF RIVER TOPAZ, ID APR-SEP 85.0 89 119.0 125 52.0 55 95. 39 24 85 GOOSE CREEK OAKLEY RES INFLOW, ID APR-JUL 25.0 86 45.0 155 4.0 14 29. 0 BIG WOOD RIVER HAILEY, ID (1) APR-JUL 240.0 94 395.0 154 86.0 34 256. 229 39 107 MAGIC RESERVOIR INFLOW, ID APR-JUL 265.0 91 520.0 179 9.8 3 291. 147 29 111 LITTLE WOOD RIVER CAREY NR, ID APR-JUL 77.0 89 149.0 171 6.1 7 87. 56 14 118 MIDDLE SNAKE BASINS Dec-06 Mid Month ________________Forecast______________ __________Runoff___________ Stream and Station Probable % Maximum % Minimum % Average PrevYr CurYR % BRUNEAU RIVER HOT SPRING NR, ID APR-JUL 193.0 93 315.0 151 71.0 34 208. 112 21 99 OWYHEE RIVER OWYHEE RES INFLOW, OR MAR-JUL 495.0 81 990.0 162 0.0 0 613. 158 60 85 OWYHEE RES OUTFLOW APR-JUL 55.0 25 550.0 253 0.0 0 217. 30 14 136 BOISE RIVER TWIN SPRINGS NR, ID (1) APR-JUL 630.0 99 820.0 129 440.0 69 636. 586 96 117 BOISE NR, ID (1) APR-JUL 1410.0 100 2010.0 142 810.0 57 1414. 1129 208 112 PARMA NR, ID APR-JUL 315.0 53 850.0 143 69.0 12 593. 195 162 82 S.F. BOISE RIVER ANDERSON RNCH RES IN, ID (1) APR-JUL 540.0 100 680.0 125 395.0 73 542. 393 70 118 MALHEUR RIVER DREWSEY NR, OR MAR-JUL 94.0 85 158.0 144 29.0 26 110. 60 14 95 N.F. MALHEUR RIVER BEULAH RES INFLOW, OR (1) MAR-JUL 70.0 86 108.0 133 31.0 38 81. 46 12 96 PAYETTE RIVER HORSESHOE BEND NR, ID (1) APR-JUL 1590.0 98 2280.0 141 890.0 55 1617. 1490 275 105 EMMETT NR, ID APR-JUL 1220.0 98 1970.0 158 465.0 37 1246. 1177 217 83 DEADWOOD RIVER DEADWOOD RES INFLOW, ID (1) APR-JUL 134.0 100 186.0 139 82.0 61 134. 133 20 125 N.F. PAYETTE RIVER CASCADE RES INFLOW, ID (1) APR-JUL 490.0 99 690.0 139 290.0 59 495. 530 95 103 WEISER RIVER WEISER NR, ID (1) APR-JUL 400.0 102 645.0 165 153.0 39 391. 369 53 73 BURNT RIVER HEREFORD NR, OR MAR-JUL 48.0 94 74.0 145 22.0 43 51. 28 9 113 LOWER SNAKE AND CENTRAL OREGON BASINS Dec-06 Mid Month ________________Forecast______________ __________Runoff___________ Stream and Station Probable % Maximum % Minimum % Average PrevYr CurYR % POWDER RIVER SUMPTER NR, OR MAR-JUL 65.0 93 91.0 130 38.0 54 70. 45 IMNAHA RIVER IMNAHA, OR MAR-JUL 295.0 98 400.0 133 192.0 64 301. 261 41 119 SALMON RIVER SALMON, ID (1) APR-JUL 885.0 103 1330.0 155 445.0 52 857. 676 248 104 WHITEBIRD, ID (1) JAN-JUL 7140.0 105 9490.0 139 4790.0 70 6805. 5978 962 106 APR-JUL 6140.0 105 8490.0 145 3790.0 65 5851. 5081 962 106 GRANDE RONDE RIVER LA GRANDE, OR MAR-JUL 225.0 90 310.0 124 142.0 57 249. 191 18 77 APR-JUL 166.0 90 250.0 136 83.0 45 184. 130 18 77 TROY, OR (1) MAR-JUL 1490.0 94 2230.0 141 745.0 47 1578. 1410 297 119 APR-JUL 1200.0 94 1940.0 152 460.0 36 1274. 1032 297 119 CLEARWATER RIVER OROFINO, ID (1) APR-JUL 5250.0 113 7460.0 161 3040.0 65 4645. 4382 785 136 SPALDING, ID (1) JAN-JUL 11000.0 114 14800.0 153 7290.0 75 9683. 9879 1525 143 APR-JUL 8470.0 114 12200.0 164 4730.0 64 7435. 6870 1525 143 APR-SEP 8940.0 114 12700.0 162 5200.0 66 7849. 7159 1525 143 N.F. CLEARWATER RI DWORSHAK RES INFLOW, ID (1) JAN-JUL 4090.0 115 5340.0 151 2840.0 80 3547. 3564 684 152 APR-JUL 3050.0 115 4300.0 163 1800.0 68 2644. 2300 684 152 APR-SEP 3230.0 115 4480.0 160 1980.0 71 2803. 2399 684 152 S.F. WALLA WALLA R MILTON NR, OR APR-JUL 57.0 108 75.0 142 38.0 72 53. 48 26 104 UMATILLA RIVER GIBBON NR, OR APR-JUL 76.0 104 111.0 152 40.0 55 73. 66 37 139 PENDLETON, OR APR-JUL 152.0 102 230.0 154 73.0 49 149. 111 85 152 M.F. JOHN DAY RIVE RITTER, OR (1) MAR-JUL 162.0 101 220.0 138 105.0 66 160. 0 APR-JUL 125.0 102 181.0 147 68.0 55 123. 0 N.F. JOHN DAY RIVE MONUMENT NR, OR APR-JUL 595.0 100 880.0 147 315.0 53 597. 471 69 81 JOHN DAY RIVER SERVICE CREEK, OR (1) MAR-SEP 1170.0 101 1680.0 146 650.0 56 1153. 842 129 87 APR-SEP 875.0 101 1390.0 161 360.0 42 865. 636 129 87 DESCHUTES RIVER BENHAM FALLS, OR APR-SEP 530.0 100 605.0 115 450.0 85 528. 0 237 93 Dec-06 Mid Month ________________Forecast______________ __________Runoff___________ Stream and Station Probable % Maximum % Minimum % Average PrevYr CurYR % CROOKED RIVER PRINEVILLE RES INFLOW, OR MAR-JUL 181.0 98 280.0 152 82.0 45 184. 68 27 100 OCHOCO CREEK OCHOCO RES INFLOW, OR MAR-JUL 36.0 100 55.0 153 16.2 45 36. 17 WESTSIDE AND SOUTHERN OREGON BASINS Dec-06 Mid Month ________________Forecast______________ __________Runoff___________ Stream and Station Probable % Maximum % Minimum % Average PrevYr CurYR % SKAGIT RIVER CONCRETE NR, WA APR-SEP 7610.0 120 9590.0 151 5640.0 89 6365. 4616 3024 123 COWLITZ RIVER MAYFIELD RES INFLOW, WA JAN-JUL 3920.0 122 5290.0 164 2550.0 79 3217. 3163 1687 141 APR-JUL 2060.0 122 3430.0 203 685.0 41 1689. 1284 1687 141 APR-SEP 2340.0 122 3710.0 193 970.0 50 1922. 1464 1687 141 CASTLE ROCK, WA APR-SEP 3170.0 120 5070.0 192 1270.0 48 2639. 1930 2667 144 JAN-JUL 5670.0 120 7570.0 161 3770.0 80 4709. 4567 2667 144 LEWIS RIVER ARIEL, WA JAN-JUL 2780.0 118 3200.0 136 2360.0 100 2351. 2532 1364 130 MCKENZIE RIVER VIDA NR, OR APR-SEP 1240.0 103 1530.0 127 945.0 79 1201. 968 928 120 S. SANTIAM RIVER WATERLOO, OR APR-SEP 610.0 104 880.0 150 340.0 58 587. 509 879 125 N. SANTIAM RIVER MEHAMA, OR APR-SEP 890.0 107 1180.0 141 595.0 71 834. 727 967 132 WILLAMETTE RIVER SALEM, OR APR-SEP 4960.0 103 6620.0 138 3300.0 69 4804. 4281 5935 120 CLACKAMAS RIVER ESTACADA, OR APR-SEP 840.0 112 1070.0 143 605.0 81 748. 0 742 132 N. UMPQUA RIVER LEMOLO LAKE INFLOW, OR (1) APR-SEP 161.0 107 210.0 139 112.0 74 151. 129 50 75 JAN-JUL 192.0 106 240.0 133 143.0 79 181. 159 50 75 ROGUE RIVER RAYGOLD, OR APR-SEP 945.0 106 1270.0 143 615.0 69 889. 786 513 100 JAN-JUL 1680.0 106 2010.0 127 1350.0 85 1584. 1369 513 100 CHEWAUCAN RIVER PAISLEY NR, OR MAR-JUL 72.0 81 116.0 130 27.0 30 89. 16 SILVIES RIVER BURNS NR, OR MAR-JUL 110.0 85 197.0 153 23.0 18 129. 31 7 88 APR-SEP 85.0 86 172.0 174 0.0 0 99. 27 7 88 Forecasts are selected from those prepared by: National Weather Service Natural Resource Conservation Service B.C. Hydro and Power Authority. Project inflow forecasts have been coordinated with the U.S. Army Corp of Engineers and U.S. Bureau of Reclamation. All forecasts are in thousands of acre-feet. All averages are for the period 1971 through 2000 NOAA/NWS/Northwest River Forecast Center NNNN $$
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