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Water Supply Forecasts Northwest River Forecast Center Thursday December 18, 2008 at 21:59 GMT Observed precipitation through the 16th Future precip assumed to be normal No snow included Estimated runoff applied to forecasts UPPER COLUMBIA BASINS Dec-08 Mid Month ________________Forecast______________ __________Runoff___________ Stream and Station Probable % Maximum % Minimum % Average PrevYr CurYR % COLUMBIA RIVER MICA RESERVOIR INFLOW, BC JAN-JUL 9610.0 100 12200.0 127 7020.0 73 9619. 9199 FEB-SEP 13000.0 100 15500.0 120 10400.0 80 12960. 12030 APR-SEP 12500.0 100 15100.0 121 9900.0 79 12500. 11570 REVELSTOKE, BC JAN-JUL 13900.0 100 16200.0 117 11700.0 84 13880. 13420 ARROW LAKES INFLOW JAN-JUL 20300.0 97 23400.0 112 17100.0 82 20960. 19230 FEB-SEP 25600.0 97 28700.0 108 22500.0 85 26460. 23880 APR-SEP 24300.0 97 27400.0 109 21200.0 84 25110. 22910 BIRCHBANK, BC (1) JAN-JUL 36400.0 94 46800.0 120 26000.0 67 38930. 36130 APR-SEP 40600.0 93 51000.0 117 30300.0 70 43500. 40800 GRAND COULEE, WA (1) JAN-JUL 58000.0 92 76100.0 121 39800.0 63 62900. 59650 APR-SEP 59000.0 92 77100.0 120 40800.0 64 63990. 62860 ROCK ISLAND DAM BLO, WA (1) JAN-JUL 64400.0 93 84700.0 123 44000.0 64 68910. 64110 APR-SEP 65000.0 93 85300.0 123 44600.0 64 69540. 67150 THE DALLES NR, OR (1) JAN-JUL 92900.0 87 123000.0 115 63100.0 59 107300. 99210 APR-AUG 80600.0 87 110000.0 118 50800.0 55 93090. 93200 APR-SEP 85400.0 87 115000.0 117 55700.0 56 98650. 97910 KOOTENAI RIVER LIBBY RES INFLOW, MT (1) JAN-JUL 5650.0 90 7870.0 125 3430.0 54 6306. 5516 APR-AUG 5600.0 90 7810.0 125 3380.0 54 6248. 5539 APR-SEP 5950.0 90 8160.0 123 3730.0 56 6638. 5887 LEONIA, ID (1) APR-JUL 6250.0 89 8970.0 127 3530.0 50 7041. 6568 APR-SEP 7210.0 89 9940.0 122 4490.0 55 8125. 7516 BONNERS FERRY, ID APR-JUL 6770.0 89 9120.0 120 4480.0 59 7619. 7099 KOOTENAY RIVER KOOTENAY LAKE INFLOW, BC JAN-JUL 14100.0 88 18300.0 114 9880.0 62 16010. 14250 APR-SEP 14500.0 88 18800.0 114 10200.0 62 16450. 15060 DUNCAN RIVER DUNCAN RESERVOIR INFLOW, BC JAN-JUL 1730.0 96 2180.0 121 1290.0 72 1800. 1691 FEB-SEP 2220.0 96 2660.0 115 1770.0 77 2305. 2170 APR-SEP 2140.0 96 2590.0 116 1700.0 76 2227. 2111 CLARK FORK BLACKFOOT RIVER ABV, MT APR-SEP 700.0 99 1100.0 156 300.0 43 704. 852 MISSOULA ABV, MT APR-SEP 1590.0 100 2340.0 147 845.0 53 1595. 1798 MISSOULA BLO, MT APR-SEP 2870.0 97 4130.0 139 1610.0 54 2962. 3420 ST. REGIS, MT (1) APR-SEP 3720.0 95 5770.0 148 1670.0 43 3907. 4509 PLAINS NR, MT (1) APR-SEP 10300.0 93 15100.0 137 5490.0 50 11060. 12090 WHITEHORSE RAPIDS, ID (1) APR-SEP 11300.0 91 16700.0 134 5850.0 47 12460. 13630 BLACKFOOT RIVER BONNER NR, MT APR-SEP 885.0 99 1240.0 139 530.0 59 892. 946 BITTERROOT RIVER AT MOUTH, MT APR-SEP 1280.0 94 1830.0 134 720.0 53 1364. 1597 Dec-08 Mid Month ________________Forecast______________ __________Runoff___________ Stream and Station Probable % Maximum % Minimum % Average PrevYr CurYR % N.F. FLATHEAD RIVE COLUMBIA FALLS NR, MT APR-SEP 1620.0 90 2090.0 116 1150.0 64 1801. 1865 M.F. FLATHEAD RIVE WEST GLACIER NR, MT APR-SEP 1620.0 93 2060.0 118 1180.0 68 1740. 2103 S.F. FLATHEAD RIVE HUNGRY HORSE RES IN, MT (1) JAN-JUL 2090.0 94 2910.0 131 1270.0 57 2224. 2506 APR-SEP 2000.0 94 2810.0 132 1180.0 56 2124. 2530 UPPER/MIDDLE COLUMBIA BASINS Dec-08 Mid Month ________________Forecast______________ __________Runoff___________ Stream and Station Probable % Maximum % Minimum % Average PrevYr CurYR % FLATHEAD RIVER COLUMBIA FALLS, MT APR-SEP 5360.0 92 7060.0 121 3650.0 63 5825. 6676 FLATHEAD LAKE INFLOW, MT (1) APR-SEP 6310.0 94 8990.0 134 3620.0 54 6713. 7562 PRIEST RIVER PRIEST RIVER, ID (1) APR-JUL 735.0 90 1070.0 131 405.0 50 814. 849 PEND OREILLE RIVER PEND OREILLE LAKE IN, ID (1) APR-SEP 12600.0 91 18500.0 133 6710.0 48 13910. 15810 APR-JUL 11500.0 90 17400.0 137 5620.0 44 12740. 14580 BOX CANYON BLO, WA (1) APR-SEP 12900.0 92 17900.0 127 7780.0 55 14090. 16110 KETTLE RIVER LAURIER NR, WA APR-SEP 1820.0 92 2340.0 119 1300.0 66 1972. 1517 COEUR D'ALENE RIVE ENAVILLE, ID (1) APR-SEP 740.0 95 1030.0 132 455.0 58 778. 1302 APR-JUL 705.0 95 990.0 134 420.0 57 739. 1258 COEUR D'ALENE LAKE IN, ID APR-JUL 2370.0 93 3470.0 136 1260.0 49 2552. 3826 SPOKANE RIVER SPOKANE, WA (1) APR-SEP 2550.0 93 2740.0 100 2370.0 86 2744. 4128 ST JOE RIVER CALDER, ID APR-SEP 1140.0 95 1550.0 129 730.0 61 1205. 1656 APR-JUL 1070.0 94 1480.0 130 660.0 58 1136. 1571 OKANAGAN RIVER TONASKET NR, WA (1) APR-SEP 1550.0 88 2510.0 142 595.0 34 1766. 1542 SIMILKAMEEN RIVER NIGHTHAWK NR, WA (1) APR-JUL 1260.0 93 2030.0 150 485.0 36 1350. 1189 APR-SEP 1350.0 93 2130.0 147 580.0 40 1450. 1259 METHOW RIVER PATEROS NR, WA (1) APR-SEP 905.0 92 1420.0 144 390.0 40 985. 926 CHELAN RIVER LAKE CHELAN INFLOW, WA (1) APR-SEP 1080.0 91 1280.0 108 885.0 75 1185. 1157 WENATCHEE RIVER PESHASTIN, WA APR-SEP 1550.0 95 2170.0 133 925.0 57 1635. 1521 YAKIMA AND MAINSTEM SNAKE BASINS Dec-08 Mid Month ________________Forecast______________ __________Runoff___________ Stream and Station Probable % Maximum % Minimum % Average PrevYr CurYR % YAKIMA RIVER KEECHELUS LAKE IN, WA (1) APR-SEP 127.0 95 179.0 135 75.0 56 133. 174 CLE ELUM, WA APR-SEP 860.0 95 1170.0 130 545.0 60 903. 1013 PARKER NR, WA APR-SEP 1820.0 95 2460.0 128 1180.0 62 1918. 2325 KACHESS RIVER KACHESS LAKE INFLOW, WA (1) APR-SEP 113.0 94 162.0 135 63.0 52 120. 150 CLE ELUM RIVER CLE ELUM LAKE INFLOW, WA (1) APR-SEP 430.0 96 580.0 129 280.0 63 448. 479 NACHES RIVER NACHES NR, WA APR-SEP 785.0 94 1050.0 125 510.0 61 837. 991 BUMPING RIVER BUMPING LAKE INFLOW, WA (1) APR-SEP 128.0 96 180.0 134 77.0 57 134. 155 TIETON RIVER RIMROCK LAKE INFLOW, WA (1) APR-SEP 220.0 91 290.0 120 148.0 61 242. 247 AHTANUM CREEKS TAMPICO NR, WA APR-SEP 42.0 91 63.0 137 21.0 46 46. 0 SNAKE RIVER JACKSON LAKE INFLOW, WY (1) APR-JUL 710.0 87 945.0 116 475.0 58 815. 894 APR-SEP 790.0 87 1020.0 113 550.0 61 904. 970 PALISADES RES INFLOW, ID (1) APR-JUL 2890.0 87 3970.0 119 1810.0 54 3331. 3352 APR-SEP 3360.0 87 4440.0 115 2290.0 59 3875. 3850 HEISE NR, ID APR-JUL 3090.0 87 4270.0 120 1910.0 54 3561. 3644 APR-SEP 3610.0 87 4790.0 115 2420.0 58 4159. 4282 SHELLEY NR, ID (1) APR-JUL 4000.0 90 5360.0 121 2640.0 60 4428. 4541 APR-SEP 4810.0 90 6170.0 116 3450.0 65 5324. 5320 BLACKFOOT NR, ID (1) APR-JUL 4030.0 88 5440.0 118 2610.0 57 4604. 0 AMER. FALLS RES IN, ID (1) APR-JUL 2460.0 76 4190.0 129 735.0 23 3242. 2731 MILNER, ID APR-JUL 230.0 19 1380.0 112 130.0 11 1228. 160 KING HILL, ID (1) APR-JUL 1670.0 55 3050.0 100 290.0 10 3045. 1765 MURPHY NR, ID (1) APR-JUL 1780.0 58 3180.0 103 380.0 12 3092. 1549 WEISER, ID (1) JAN-JUL 5450.0 56 8570.0 88 2340.0 24 9793. 5966 APR-JUL 3210.0 56 6330.0 110 98.0 2 5765. 3926 APR-SEP 4600.0 64 7720.0 107 1490.0 21 7192. 5218 BROWNLEE RES INFLOW APR-JUL 3580.0 57 6840.0 108 320.0 5 6313. 4367 APR-SEP 4970.0 64 8230.0 105 1710.0 22 7801. 5699 HELLS CANYON, ID (1) APR-JUL 3650.0 56 7060.0 109 230.0 4 6493. 4738 APR-SEP 5060.0 63 8470.0 106 1640.0 21 7977. 6060 LOWER GRANITE RES IN, WA (1) JAN-JUL 23700.0 79 34500.0 115 12800.0 43 30020. 27520 FEB-SEP 23900.0 79 34800.0 115 13100.0 43 30370. 28890 APR-JUL 17000.0 79 27900.0 129 6120.0 28 21550. 22830 APR-SEP 19000.0 79 29900.0 124 8160.0 34 24140. 25390 UPPER SNAKE BASINS Dec-08 Mid Month ________________Forecast______________ __________Runoff___________ Stream and Station Probable % Maximum % Minimum % Average PrevYr CurYR % GREY'S RIVER PALISADES ABV, WY APR-SEP 355.0 90 495.0 126 210.0 53 394. 389 SALT RIVER ETNA NR, WY APR-JUL 295.0 86 470.0 137 123.0 36 342. 311 HENRYS FORK ASHTON NR, ID APR-JUL 485.0 85 630.0 110 345.0 60 571. 518 ST. ANTHONY, ID APR-JUL 615.0 84 880.0 120 350.0 48 734. 703 REXBURG NR, ID APR-JUL 1330.0 85 1750.0 112 910.0 58 1559. 905 FALLS RIVER SQUIRREL NR, ID (1) APR-JUL 320.0 83 405.0 105 230.0 60 386. 308 TETON RIVER ST. ANTHONY NR, ID APR-JUL 330.0 82 485.0 120 168.0 42 403. 445 BIG LOST RIVER MACKAY RESERVOIR INFLOW, ID APR-JUL 102.0 72 199.0 140 5.4 4 142. 80 WILLOW CREEK RIRIE RESERVOIR INFLOW APR-JUL 75.0 87 125.0 145 24.0 28 86. 41 PORTNEUF RIVER TOPAZ, ID APR-SEP 81.0 85 114.0 120 47.0 49 95. 61 GOOSE CREEK OAKLEY RES INFLOW, ID APR-JUL 22.0 76 43.0 148 1.4 5 29. 0 BIG WOOD RIVER HAILEY, ID (1) APR-JUL 191.0 75 345.0 135 37.0 14 256. 185 MAGIC RESERVOIR INFLOW, ID APR-JUL 186.0 64 440.0 151 0.0 0 291. 172 LITTLE WOOD RIVER CAREY NR, ID APR-JUL 69.0 79 140.0 161 0.0 0 87. 50 MIDDLE SNAKE BASINS Dec-08 Mid Month ________________Forecast______________ __________Runoff___________ Stream and Station Probable % Maximum % Minimum % Average PrevYr CurYR % BRUNEAU RIVER HOT SPRING NR, ID APR-JUL 158.0 76 280.0 135 36.0 17 208. 155 OWYHEE RIVER OWYHEE RES INFLOW, OR MAR-JUL 455.0 74 950.0 155 0.0 0 613. 452 OWYHEE RES OUTFLOW APR-JUL 17.5 8 315.0 145 0.0 0 217. 53 BOISE RIVER TWIN SPRINGS NR, ID (1) APR-JUL 550.0 86 740.0 116 360.0 57 636. 655 BOISE NR, ID (1) APR-JUL 1200.0 85 1800.0 127 595.0 42 1414. 1290 PARMA NR, ID APR-JUL 134.0 23 670.0 113 46.0 8 593. 319 S.F. BOISE RIVER ANDERSON RNCH RES IN, ID (1) APR-JUL 455.0 84 595.0 110 310.0 57 542. 442 MALHEUR RIVER DREWSEY NR, OR MAR-JUL 80.0 73 144.0 131 15.4 14 110. 85 N.F. MALHEUR RIVER BEULAH RES INFLOW, OR (1) MAR-JUL 60.0 74 98.0 121 21.0 26 81. 80 PAYETTE RIVER HORSESHOE BEND NR, ID (1) APR-JUL 1270.0 79 1960.0 121 570.0 35 1617. 1701 EMMETT NR, ID APR-JUL 910.0 73 1650.0 132 315.0 25 1246. 1394 DEADWOOD RIVER DEADWOOD RES INFLOW, ID (1) APR-JUL 110.0 82 162.0 121 58.0 43 134. 141 N.F. PAYETTE RIVER CASCADE RES INFLOW, ID (1) APR-JUL 400.0 81 605.0 122 200.0 40 495. 525 WEISER RIVER WEISER NR, ID (1) APR-JUL 260.0 66 505.0 129 14.8 4 391. 479 BURNT RIVER HEREFORD NR, OR MAR-JUL 37.0 73 63.0 124 11.3 22 51. 57 LOWER SNAKE AND CENTRAL OREGON BASINS Dec-08 Mid Month ________________Forecast______________ __________Runoff___________ Stream and Station Probable % Maximum % Minimum % Average PrevYr CurYR % POWDER RIVER SUMPTER NR, OR MAR-JUL 53.0 76 79.0 113 27.0 39 70. 80 IMNAHA RIVER IMNAHA, OR MAR-JUL 245.0 81 350.0 116 141.0 47 301. 337 SALMON RIVER SALMON, ID (1) APR-JUL 735.0 86 1180.0 138 295.0 34 857. 806 WHITEBIRD, ID (1) JAN-JUL 6000.0 88 8350.0 123 3650.0 54 6805. 7310 APR-JUL 5160.0 88 7510.0 128 2810.0 48 5851. 6560 GRANDE RONDE RIVER LA GRANDE, OR MAR-JUL 193.0 78 275.0 110 109.0 44 249. 347 APR-JUL 143.0 78 225.0 122 59.0 32 184. 301 TROY, OR (1) MAR-JUL 1280.0 81 2020.0 128 535.0 34 1578. 1971 APR-JUL 1030.0 81 1770.0 139 290.0 23 1274. 1761 CLEARWATER RIVER OROFINO, ID (1) APR-JUL 4250.0 91 6450.0 139 2040.0 44 4645. 5729 SPALDING, ID (1) JAN-JUL 8880.0 92 12600.0 130 5140.0 53 9683. 10500 APR-JUL 6820.0 92 10600.0 143 3080.0 41 7435. 9382 APR-SEP 7200.0 92 10900.0 139 3460.0 44 7849. 9851 N.F. CLEARWATER RI DWORSHAK RES INFLOW, ID (1) JAN-JUL 3310.0 93 4560.0 129 2060.0 58 3547. 3823 APR-JUL 2470.0 93 3720.0 141 1220.0 46 2644. 3434 APR-SEP 2620.0 93 3870.0 138 1370.0 49 2803. 3659 S.F. WALLA WALLA R MILTON NR, OR APR-JUL 46.0 87 64.0 121 27.0 51 53. 92 UMATILLA RIVER GIBBON NR, OR APR-JUL 66.0 90 101.0 138 31.0 42 73. 127 PENDLETON, OR APR-JUL 131.0 88 210.0 141 52.0 35 149. 285 M.F. JOHN DAY RIVE RITTER, OR (1) MAR-JUL 128.0 80 185.0 116 72.0 45 160. 0 APR-JUL 99.0 80 155.0 126 42.0 34 123. 0 N.F. JOHN DAY RIVE MONUMENT NR, OR APR-JUL 475.0 80 755.0 126 193.0 32 597. 883 JOHN DAY RIVER SERVICE CREEK, OR (1) MAR-SEP 920.0 80 1430.0 124 405.0 35 1153. 1362 APR-SEP 690.0 80 1210.0 140 177.0 20 865. 1152 DESCHUTES RIVER BENHAM FALLS, OR APR-SEP 490.0 93 570.0 108 415.0 79 528. 504 Dec-08 Mid Month ________________Forecast______________ __________Runoff___________ Stream and Station Probable % Maximum % Minimum % Average PrevYr CurYR % CROOKED RIVER PRINEVILLE RES INFLOW, OR MAR-JUL 128.0 70 225.0 122 29.0 16 184. 143 OCHOCO CREEK OCHOCO RES INFLOW, OR MAR-JUL 25.0 69 44.0 122 5.3 15 36. 33 WESTSIDE AND SOUTHERN OREGON BASINS Dec-08 Mid Month ________________Forecast______________ __________Runoff___________ Stream and Station Probable % Maximum % Minimum % Average PrevYr CurYR % SKAGIT RIVER CONCRETE NR, WA APR-SEP 6060.0 95 8030.0 126 4090.0 64 6365. 6790 COWLITZ RIVER MAYFIELD RES INFLOW, WA JAN-JUL 2860.0 89 4230.0 131 1490.0 46 3217. 3468 APR-JUL 1500.0 89 2870.0 170 133.0 8 1689. 2328 APR-SEP 1710.0 89 3080.0 160 340.0 18 1922. 2615 CASTLE ROCK, WA APR-SEP 2340.0 89 4240.0 161 440.0 17 2639. 3330 JAN-JUL 4180.0 89 6080.0 129 2280.0 48 4709. 4998 LEWIS RIVER ARIEL, WA JAN-JUL 2150.0 91 2570.0 109 1720.0 73 2351. 2397 MCKENZIE RIVER VIDA NR, OR APR-SEP 1130.0 94 1420.0 118 840.0 70 1201. 1674 S. SANTIAM RIVER WATERLOO, OR APR-SEP 555.0 95 825.0 141 285.0 49 587. 895 N. SANTIAM RIVER MEHAMA, OR APR-SEP 790.0 95 1080.0 129 495.0 59 834. 1413 WILLAMETTE RIVER SALEM, OR APR-SEP 4520.0 94 6180.0 129 2860.0 60 4804. 6084 CLACKAMAS RIVER ESTACADA, OR APR-SEP 715.0 96 950.0 127 480.0 64 748. 1174 N. UMPQUA RIVER LEMOLO LAKE INFLOW, OR (1) APR-SEP 138.0 91 187.0 124 89.0 59 151. 164 JAN-JUL 164.0 91 210.0 116 115.0 64 181. 180 ROGUE RIVER RAYGOLD, OR APR-SEP 815.0 92 1140.0 128 485.0 55 889. 1076 JAN-JUL 1450.0 92 1780.0 112 1130.0 71 1584. 1697 CHEWAUCAN RIVER PAISLEY NR, OR MAR-JUL 61.0 69 105.0 118 16.7 19 89. 16 SILVIES RIVER BURNS NR, OR MAR-JUL 90.0 70 177.0 137 3.1 2 129. 79 APR-SEP 69.0 70 156.0 158 0.0 0 99. 82 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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