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Water Supply Forecasts Northwest River Forecast Center Friday December 28, 2007 at 20:37 GMT Observed precipitation through the 25th Future precip is 110% of normal across region for first half of Jan Future precip is 100% of normal for the remainder of the period Snow included in this run UPPER COLUMBIA BASINS Jan-08 EarlyBird ________________Forecast______________ __________Runoff___________ Stream and Station Probable % Maximum % Minimum % Average PrevYr CurYR % COLUMBIA RIVER MICA RESERVOIR INFLOW, BC JAN-JUL 10300.0 107 12900.0 134 7750.0 81 9619. 9985 1226 92 FEB-SEP 13900.0 107 16500.0 127 11300.0 87 12960. 12300 1226 92 APR-SEP 13400.0 107 16000.0 128 10900.0 87 12500. 11850 1226 92 REVELSTOKE, BC JAN-JUL 14800.0 107 17100.0 123 12600.0 91 13880. 14190 1884 97 ARROW LAKES INFLOW JAN-JUL 22000.0 105 25100.0 120 18800.0 90 20960. 20790 2654 83 FEB-SEP 27700.0 105 30900.0 117 24600.0 93 26460. 24050 2654 83 APR-SEP 26300.0 105 29400.0 117 23200.0 92 25110. 22920 2654 83 BIRCHBANK, BC (1) JAN-JUL 40700.0 105 51100.0 131 30300.0 78 38930. 41180 4465 85 APR-SEP 45500.0 105 55900.0 129 35100.0 81 43500. 42860 4465 85 GRAND COULEE, WA (1) JAN-JUL 63000.0 100 81200.0 129 44900.0 71 62900. 66890 6251 75 APR-SEP 64100.0 100 82300.0 129 46000.0 72 63990. 63870 6251 75 ROCK ISLAND DAM BLO, WA (1) JAN-JUL 69800.0 101 90200.0 131 49500.0 72 68910. 71930 6645 74 APR-SEP 70500.0 101 90800.0 131 50100.0 72 69540. 68910 6645 74 THE DALLES NR, OR (1) JAN-JUL 103000.0 96 132000.0 123 72800.0 68 107300. 114700 12030 72 APR-AUG 89000.0 96 119000.0 128 59300.0 64 93090. 97540 12030 72 APR-SEP 94300.0 96 124000.0 126 64600.0 65 98650. 101700 12030 72 KOOTENAI RIVER LIBBY RES INFLOW, MT (1) JAN-JUL 6510.0 103 8730.0 138 4290.0 68 6306. 6909 604 67 APR-AUG 6450.0 103 8670.0 139 4240.0 68 6248. 6628 604 67 APR-SEP 6850.0 103 9070.0 137 4640.0 70 6638. 6922 604 67 LEONIA, ID (1) APR-JUL 7250.0 103 9980.0 142 4530.0 64 7041. 7768 757 67 APR-SEP 8370.0 103 11100.0 137 5650.0 70 8125. 8545 757 67 BONNERS FERRY, ID APR-JUL 7880.0 103 10200.0 134 5580.0 73 7619. 8380 801 67 KOOTENAY RIVER KOOTENAY LAKE INFLOW, BC JAN-JUL 16600.0 104 20800.0 130 12500.0 78 16010. 17210 1440 70 APR-SEP 17100.0 104 21400.0 130 12800.0 78 16450. 16790 1440 70 DUNCAN RIVER DUNCAN RESERVOIR INFLOW, BC JAN-JUL 1850.0 103 2300.0 128 1410.0 78 1800. 2033 199 81 FEB-SEP 2370.0 103 2820.0 122 1930.0 84 2305. 2361 199 81 APR-SEP 2290.0 103 2740.0 123 1850.0 83 2227. 2291 199 81 CLARK FORK BLACKFOOT RIVER ABV, MT APR-SEP 665.0 94 1060.0 151 265.0 38 704. 504 123 73 MISSOULA ABV, MT APR-SEP 1480.0 93 2230.0 140 735.0 46 1595. 1344 203 72 MISSOULA BLO, MT APR-SEP 2760.0 93 4020.0 136 1500.0 51 2962. 2770 349 73 ST. REGIS, MT (1) APR-SEP 3640.0 93 5690.0 146 1590.0 41 3907. 3648 458 73 PLAINS NR, MT (1) APR-SEP 9950.0 90 14800.0 134 5150.0 47 11060. 10840 965 64 WHITEHORSE RAPIDS, ID (1) APR-SEP 11200.0 90 16600.0 133 5760.0 46 12460. 12060 986 57 BLACKFOOT RIVER BONNER NR, MT APR-SEP 815.0 91 1170.0 131 460.0 52 892. 840 81 71 BITTERROOT RIVER AT MOUTH, MT APR-SEP 1280.0 94 1830.0 134 720.0 53 1364. 1319 148 76 Jan-08 EarlyBird ________________Forecast______________ __________Runoff___________ Stream and Station Probable % Maximum % Minimum % Average PrevYr CurYR % N.F. FLATHEAD RIVE COLUMBIA FALLS NR, MT APR-SEP 1660.0 92 2130.0 118 1200.0 67 1801. 1780 131 64 M.F. FLATHEAD RIVE WEST GLACIER NR, MT APR-SEP 1570.0 90 2010.0 116 1130.0 65 1740. 1737 128 65 S.F. FLATHEAD RIVE HUNGRY HORSE RES IN, MT (1) JAN-JUL 2030.0 91 2850.0 128 1220.0 55 2224. 2357 141 60 APR-SEP 1940.0 91 2760.0 130 1120.0 53 2124. 2175 141 60 UPPER/MIDDLE COLUMBIA BASINS Jan-08 EarlyBird ________________Forecast______________ __________Runoff___________ Stream and Station Probable % Maximum % Minimum % Average PrevYr CurYR % FLATHEAD RIVER COLUMBIA FALLS, MT APR-SEP 5300.0 91 7010.0 120 3600.0 62 5825. 6002 407 62 FLATHEAD LAKE INFLOW, MT (1) APR-SEP 6080.0 91 8770.0 131 3400.0 51 6713. 7002 523 68 PRIEST RIVER PRIEST RIVER, ID (1) APR-JUL 765.0 94 1090.0 134 435.0 53 814. 997 99 70 PEND OREILLE RIVER PEND OREILLE LAKE IN, ID (1) APR-SEP 12600.0 91 18500.0 133 6710.0 48 13910. 14260 1356 66 APR-JUL 11500.0 90 17400.0 137 5620.0 44 12740. 13520 1356 66 BOX CANYON BLO, WA (1) APR-SEP 12900.0 92 17900.0 127 7810.0 55 14090. 14500 1361 65 KETTLE RIVER LAURIER NR, WA APR-SEP 2020.0 102 2540.0 129 1500.0 76 1972. 2366 60 49 COEUR D'ALENE RIVE ENAVILLE, ID (1) APR-SEP 735.0 94 1020.0 131 450.0 58 778. 871 86 52 APR-JUL 700.0 95 990.0 134 415.0 56 739. 841 86 52 COEUR D'ALENE LAKE IN, ID APR-JUL 2380.0 93 3480.0 136 1270.0 50 2552. 2456 287 54 SPOKANE RIVER SPOKANE, WA (1) APR-SEP 2540.0 93 2720.0 99 2360.0 86 2744. 2705 291 51 ST JOE RIVER CALDER, ID APR-SEP 1150.0 95 1550.0 129 740.0 61 1205. 1263 97 56 APR-JUL 1080.0 95 1480.0 130 665.0 59 1136. 1203 97 56 OKANAGAN RIVER TONASKET NR, WA (1) APR-SEP 1660.0 94 2620.0 148 705.0 40 1766. 1470 172 74 SIMILKAMEEN RIVER NIGHTHAWK NR, WA (1) APR-JUL 1350.0 100 2120.0 157 575.0 43 1350. 1079 115 82 APR-SEP 1450.0 100 2220.0 153 670.0 46 1450. 1122 115 82 METHOW RIVER PATEROS NR, WA (1) APR-SEP 965.0 98 1480.0 150 450.0 46 985. 1144 70 78 CHELAN RIVER LAKE CHELAN INFLOW, WA (1) APR-SEP 1150.0 97 1350.0 114 955.0 81 1185. 1345 130 84 WENATCHEE RIVER PESHASTIN, WA APR-SEP 1590.0 97 2210.0 135 965.0 59 1635. 1669 208 69 YAKIMA AND MAINSTEM SNAKE BASINS Jan-08 EarlyBird ________________Forecast______________ __________Runoff___________ Stream and Station Probable % Maximum % Minimum % Average PrevYr CurYR % YAKIMA RIVER KEECHELUS LAKE IN, WA (1) APR-SEP 129.0 97 181.0 136 77.0 58 133. 137 44 72 CLE ELUM, WA APR-SEP 875.0 97 1190.0 132 560.0 62 903. 906 191 65 PARKER NR, WA APR-SEP 1830.0 95 2470.0 129 1190.0 62 1918. 2346 454 74 KACHESS RIVER KACHESS LAKE INFLOW, WA (1) APR-SEP 115.0 96 165.0 138 66.0 55 120. 122 34 71 CLE ELUM RIVER CLE ELUM LAKE INFLOW, WA (1) APR-SEP 435.0 97 590.0 132 285.0 64 448. 475 87 75 NACHES RIVER NACHES NR, WA APR-SEP 800.0 96 1070.0 128 530.0 63 837. 1086 165 88 BUMPING RIVER BUMPING LAKE INFLOW, WA (1) APR-SEP 129.0 96 181.0 135 77.0 57 134. 154 35 96 TIETON RIVER RIMROCK LAKE INFLOW, WA (1) APR-SEP 230.0 95 300.0 124 159.0 66 242. 244 52 82 AHTANUM CREEKS TAMPICO NR, WA APR-SEP 44.0 96 65.0 141 23.0 50 46. 0 SNAKE RIVER JACKSON LAKE INFLOW, WY (1) APR-JUL 780.0 96 1020.0 125 545.0 67 815. 812 93 86 APR-SEP 865.0 96 1100.0 122 630.0 70 904. 861 93 86 PALISADES RES INFLOW, ID (1) APR-JUL 3150.0 95 4230.0 127 2070.0 62 3331. 3267 444 74 APR-SEP 3670.0 95 4740.0 122 2590.0 67 3875. 3672 444 74 HEISE NR, ID APR-JUL 3340.0 94 4520.0 127 2150.0 60 3561. 3618 501 73 APR-SEP 3900.0 94 5080.0 122 2710.0 65 4159. 4188 501 73 SHELLEY NR, ID (1) APR-JUL 4420.0 100 5780.0 131 3060.0 69 4428. 4634 735 69 APR-SEP 5310.0 100 6670.0 125 3950.0 74 5324. 5339 735 69 BLACKFOOT NR, ID (1) APR-JUL 4450.0 97 5860.0 127 3030.0 66 4604. 0 AMER. FALLS RES IN, ID (1) APR-JUL 2900.0 89 4620.0 143 1170.0 36 3242. 2929 887 68 MILNER, ID APR-JUL 187.0 15 1030.0 84 130.0 11 1228. 996 44 7 KING HILL, ID (1) APR-JUL 1830.0 60 3210.0 105 445.0 15 3045. 3030 1153 54 MURPHY NR, ID (1) APR-JUL 1950.0 63 3350.0 108 545.0 18 3092. 3104 1147 53 WEISER, ID (1) JAN-JUL 6930.0 71 10000.0 102 3820.0 39 9793. 12140 1635 56 APR-JUL 4080.0 71 7190.0 125 960.0 17 5765. 8160 1635 56 APR-SEP 5500.0 76 8610.0 120 2380.0 33 7192. 9471 1635 56 BROWNLEE RES INFLOW APR-JUL 4590.0 73 7850.0 124 1330.0 21 6313. 8975 1700 55 APR-SEP 6010.0 77 9270.0 119 2750.0 35 7801. 10350 1700 55 HELLS CANYON, ID (1) APR-JUL 4700.0 72 8120.0 125 1290.0 20 6493. 9324 1741 57 APR-SEP 6150.0 77 9560.0 120 2730.0 34 7977. 10740 1741 57 LOWER GRANITE RES IN, WA (1) JAN-JUL 27200.0 91 38000.0 127 16300.0 54 30020. 32200 3344 63 FEB-SEP 27500.0 91 38300.0 126 16600.0 55 30370. 31790 3344 63 APR-JUL 19500.0 90 30400.0 141 8630.0 40 21550. 24440 3344 63 APR-SEP 21800.0 90 32700.0 135 11000.0 46 24140. 26590 3344 63 UPPER SNAKE BASINS Jan-08 EarlyBird ________________Forecast______________ __________Runoff___________ Stream and Station Probable % Maximum % Minimum % Average PrevYr CurYR % GREY'S RIVER PALISADES ABV, WY APR-SEP 360.0 91 500.0 127 215.0 55 394. 401 38 73 SALT RIVER ETNA NR, WY APR-JUL 310.0 91 485.0 142 136.0 40 342. 363 66 62 HENRYS FORK ASHTON NR, ID APR-JUL 550.0 96 695.0 122 410.0 72 571. 659 183 69 ST. ANTHONY, ID APR-JUL 520.0 71 780.0 106 255.0 35 734. 819 194 65 REXBURG NR, ID APR-JUL 905.0 58 1320.0 85 485.0 31 1559. 1016 284 55 FALLS RIVER SQUIRREL NR, ID (1) APR-JUL 365.0 95 450.0 117 280.0 73 386. 370 41 43 TETON RIVER ST. ANTHONY NR, ID APR-JUL 375.0 93 530.0 132 215.0 53 403. 464 71 76 BIG LOST RIVER MACKAY RESERVOIR INFLOW, ID APR-JUL 123.0 87 220.0 155 26.0 18 142. 229 20 49 WILLOW CREEK RIRIE RESERVOIR INFLOW APR-JUL 72.0 84 122.0 142 22.0 26 86. 94 4 38 PORTNEUF RIVER TOPAZ, ID APR-SEP 84.0 88 118.0 124 51.0 54 95. 120 15 53 GOOSE CREEK OAKLEY RES INFLOW, ID APR-JUL 23.0 79 44.0 152 2.5 9 29. 0 BIG WOOD RIVER HAILEY, ID (1) APR-JUL 225.0 88 380.0 148 73.0 29 256. 431 22 61 MAGIC RESERVOIR INFLOW, ID APR-JUL 245.0 84 500.0 172 8.2 2 291. 591 10 38 LITTLE WOOD RIVER CAREY NR, ID APR-JUL 74.0 85 146.0 168 3.2 4 87. 163 8 67 MIDDLE SNAKE BASINS Jan-08 EarlyBird ________________Forecast______________ __________Runoff___________ Stream and Station Probable % Maximum % Minimum % Average PrevYr CurYR % BRUNEAU RIVER HOT SPRING NR, ID APR-JUL 184.0 88 305.0 147 62.0 30 208. 276 11 52 OWYHEE RIVER OWYHEE RES INFLOW, OR MAR-JUL 465.0 76 960.0 157 29.0 4 613. 1050 44 63 OWYHEE RES OUTFLOW APR-JUL 85.0 39 580.0 267 6.1 3 217. 594 8 78 BOISE RIVER TWIN SPRINGS NR, ID (1) APR-JUL 595.0 94 785.0 123 405.0 64 636. 828 79 96 BOISE NR, ID (1) APR-JUL 1330.0 94 1940.0 137 730.0 52 1414. 2060 145 78 PARMA NR, ID APR-JUL 240.0 40 785.0 132 62.0 10 593. 1102 118 60 S.F. BOISE RIVER ANDERSON RNCH RES IN, ID (1) APR-JUL 515.0 95 660.0 122 370.0 68 542. 816 45 76 MALHEUR RIVER DREWSEY NR, OR MAR-JUL 91.0 83 156.0 142 27.0 25 110. 239 9 61 N.F. MALHEUR RIVER BEULAH RES INFLOW, OR (1) MAR-JUL 66.0 81 104.0 128 27.0 33 81. 155 8 64 PAYETTE RIVER HORSESHOE BEND NR, ID (1) APR-JUL 1590.0 98 2280.0 141 890.0 55 1617. 2214 238 91 EMMETT NR, ID APR-JUL 1280.0 103 2020.0 162 525.0 42 1246. 1977 187 71 DEADWOOD RIVER DEADWOOD RES INFLOW, ID (1) APR-JUL 134.0 100 186.0 139 82.0 61 134. 180 14 88 N.F. PAYETTE RIVER CASCADE RES INFLOW, ID (1) APR-JUL 490.0 99 690.0 139 290.0 59 495. 684 88 95 WEISER RIVER WEISER NR, ID (1) APR-JUL 375.0 96 620.0 159 132.0 34 391. 717 41 56 BURNT RIVER HEREFORD NR, OR MAR-JUL 48.0 94 74.0 145 22.0 43 51. 81 LOWER SNAKE AND CENTRAL OREGON BASINS Jan-08 EarlyBird ________________Forecast______________ __________Runoff___________ Stream and Station Probable % Maximum % Minimum % Average PrevYr CurYR % POWDER RIVER SUMPTER NR, OR MAR-JUL 66.0 94 92.0 131 39.0 56 70. 90 IMNAHA RIVER IMNAHA, OR MAR-JUL 275.0 91 380.0 126 171.0 57 301. 394 21 61 SALMON RIVER SALMON, ID (1) APR-JUL 835.0 97 1280.0 149 395.0 46 857. 1078 183 77 WHITEBIRD, ID (1) JAN-JUL 6750.0 99 9100.0 134 4400.0 65 6805. 7274 791 87 APR-JUL 5800.0 99 8150.0 139 3450.0 59 5851. 6441 791 87 GRANDE RONDE RIVER LA GRANDE, OR MAR-JUL 225.0 90 310.0 124 142.0 57 249. 238 11 47 APR-JUL 166.0 90 250.0 136 83.0 45 184. 202 11 47 TROY, OR (1) MAR-JUL 1480.0 94 2220.0 141 735.0 47 1578. 1573 136 55 APR-JUL 1200.0 94 1940.0 152 450.0 35 1274. 1369 136 55 CLEARWATER RIVER OROFINO, ID (1) APR-JUL 4630.0 100 6840.0 147 2420.0 52 4645. 4316 377 65 SPALDING, ID (1) JAN-JUL 9690.0 100 13400.0 138 5950.0 61 9683. 9175 650 61 APR-JUL 7440.0 100 11200.0 151 3700.0 50 7435. 7274 650 61 APR-SEP 7850.0 100 11600.0 148 4110.0 52 7849. 7550 650 61 N.F. CLEARWATER RI DWORSHAK RES INFLOW, ID (1) JAN-JUL 3510.0 99 4760.0 134 2260.0 64 3547. 3507 257 57 APR-JUL 2620.0 99 3870.0 146 1370.0 52 2644. 2676 257 57 APR-SEP 2780.0 99 4030.0 144 1530.0 55 2803. 2786 257 57 S.F. WALLA WALLA R MILTON NR, OR APR-JUL 54.0 102 73.0 138 36.0 68 53. 63 11 44 UMATILLA RIVER GIBBON NR, OR APR-JUL 74.0 101 110.0 151 39.0 53 73. 86 15 56 PENDLETON, OR APR-JUL 148.0 99 225.0 151 69.0 46 149. 178 27 48 M.F. JOHN DAY RIVE RITTER, OR (1) MAR-JUL 153.0 96 210.0 131 97.0 61 160. 0 APR-JUL 118.0 96 175.0 142 62.0 50 123. 0 N.F. JOHN DAY RIVE MONUMENT NR, OR APR-JUL 570.0 95 855.0 143 290.0 49 597. 745 42 50 JOHN DAY RIVER SERVICE CREEK, OR (1) MAR-SEP 1090.0 95 1600.0 139 570.0 49 1153. 1235 71 48 APR-SEP 815.0 94 1330.0 154 300.0 35 865. 1038 71 48 DESCHUTES RIVER BENHAM FALLS, OR APR-SEP 470.0 89 545.0 103 390.0 74 528. 497 244 96 Jan-08 EarlyBird ________________Forecast______________ __________Runoff___________ Stream and Station Probable % Maximum % Minimum % Average PrevYr CurYR % CROOKED RIVER PRINEVILLE RES INFLOW, OR MAR-JUL 151.0 82 250.0 136 52.0 28 184. 316 9 33 OCHOCO CREEK OCHOCO RES INFLOW, OR MAR-JUL 29.0 81 48.0 133 9.7 27 36. 59 WESTSIDE AND SOUTHERN OREGON BASINS Jan-08 EarlyBird ________________Forecast______________ __________Runoff___________ Stream and Station Probable % Maximum % Minimum % Average PrevYr CurYR % SKAGIT RIVER CONCRETE NR, WA APR-SEP 6300.0 99 8270.0 130 4330.0 68 6365. 5621 2212 90 COWLITZ RIVER MAYFIELD RES INFLOW, WA JAN-JUL 3220.0 100 4590.0 143 1850.0 58 3217. 3453 744 62 APR-JUL 1690.0 100 3060.0 181 315.0 19 1689. 1642 744 62 APR-SEP 1920.0 100 3290.0 171 550.0 29 1922. 1817 744 62 CASTLE ROCK, WA APR-SEP 2620.0 99 4520.0 171 720.0 27 2639. 2380 1174 64 JAN-JUL 4680.0 99 6580.0 140 2780.0 59 4709. 5136 1174 64 LEWIS RIVER ARIEL, WA JAN-JUL 2380.0 101 2810.0 120 1960.0 83 2351. 2514 757 72 MCKENZIE RIVER VIDA NR, OR APR-SEP 1160.0 97 1450.0 121 865.0 72 1201. 1142 606 78 S. SANTIAM RIVER WATERLOO, OR APR-SEP 575.0 98 845.0 144 305.0 52 587. 540 469 67 N. SANTIAM RIVER MEHAMA, OR APR-SEP 825.0 99 1120.0 134 530.0 64 834. 754 617 84 WILLAMETTE RIVER SALEM, OR APR-SEP 4690.0 98 6350.0 132 3030.0 63 4804. 4373 2960 60 CLACKAMAS RIVER ESTACADA, OR APR-SEP 750.0 100 985.0 132 515.0 69 748. 678 421 75 N. UMPQUA RIVER LEMOLO LAKE INFLOW, OR (1) APR-SEP 145.0 96 194.0 128 96.0 64 151. 156 55 82 JAN-JUL 176.0 97 225.0 124 127.0 70 181. 195 55 82 ROGUE RIVER RAYGOLD, OR APR-SEP 880.0 99 1210.0 136 550.0 62 889. 895 310 60 JAN-JUL 1560.0 98 1890.0 119 1240.0 78 1584. 1970 310 60 CHEWAUCAN RIVER PAISLEY NR, OR MAR-JUL 68.0 76 113.0 127 24.0 27 89. 16 SILVIES RIVER BURNS NR, OR MAR-JUL 102.0 79 189.0 147 15.5 12 129. 196 APR-SEP 78.0 79 165.0 167 9.0 8 99. 167 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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