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Water Supply Forecasts Northwest River Forecast Center Friday February 20, 2009 at 15:57 GMT Observed precipitation through the 16th Future precip assumed to be normal No snow included Observed runoff through January note: current month runoff based on OBSERVED + ESP to the end of FEB UPPER COLUMBIA BASINS Feb-09 Mid Month ________________Forecast______________ __________Runoff___________ Stream and Station Probable % Maximum % Minimum % Average PrevYr CurYR % COLUMBIA RIVER MICA RESERVOIR INFLOW, BC JAN-JUL 8960.0 93 10400.0 108 7540.0 78 9619. 9199 1732 96 FEB-JUL 8720.0 93 10100.0 108 7300.0 78 9372. 8909 1732 96 APR-SEP 11600.0 93 13000.0 104 10200.0 82 12500. 11570 1732 96 REVELSTOKE, BC JAN-JUL 13100.0 94 14400.0 104 12000.0 86 13880. 13420 2632 102 ARROW LAKES INFLOW JAN-JUL 19600.0 94 22000.0 105 17200.0 82 20960. 19230 4094 90 FEB-JUL 18900.0 93 21300.0 105 16500.0 82 20230. 18670 4094 90 APR-SEP 23600.0 94 26000.0 104 21200.0 84 25110. 22910 4094 90 BIRCHBANK, BC (1) JAN-JUL 34400.0 88 40700.0 105 28100.0 72 38930. 36130 7209 93 APR-SEP 38600.0 89 44900.0 103 32300.0 74 43500. 40800 7209 93 GRAND COULEE, WA (1) JAN-JUL 53700.0 85 63900.0 102 43400.0 69 62900. 59650 11560 85 APR-SEP 55000.0 86 65300.0 102 44800.0 70 63990. 62860 11560 85 ROCK ISLAND DAM BLO, WA (1) JAN-JUL 58700.0 85 70600.0 102 46900.0 68 68910. 64110 12860 88 APR-SEP 59500.0 86 71300.0 103 47600.0 68 69540. 67150 12860 88 THE DALLES NR, OR (1) JAN-JUL 84900.0 79 103000.0 96 67300.0 63 107300. 99210 25080 84 APR-AUG 73700.0 79 91300.0 98 56000.0 60 93090. 93200 25080 84 APR-SEP 78100.0 79 95700.0 97 60500.0 61 98650. 97910 25080 84 KOOTENAI RIVER LIBBY RES INFLOW, MT (1) JAN-JUL 4940.0 78 6340.0 101 3540.0 56 6306. 5516 1005 76 APR-AUG 4930.0 79 6330.0 101 3530.0 56 6248. 5539 1005 76 APR-SEP 5230.0 79 6630.0 100 3830.0 58 6638. 5887 1005 76 LEONIA, ID (1) APR-JUL 5460.0 78 7180.0 102 3730.0 53 7041. 6568 1199 69 APR-SEP 6300.0 78 8020.0 99 4570.0 56 8125. 7516 1199 69 BONNERS FERRY, ID APR-JUL 5960.0 78 7560.0 99 4350.0 57 7619. 7099 1258 68 KOOTENAY RIVER KOOTENAY LAKE INFLOW, BC JAN-JUL 12800.0 80 15600.0 97 9970.0 62 16010. 14250 2471 78 APR-SEP 13200.0 80 16300.0 99 10100.0 61 16450. 15060 2471 78 DUNCAN RIVER DUNCAN RESERVOIR INFLOW, BC JAN-JUL 1680.0 93 2070.0 115 1280.0 71 1800. 1691 361 108 FEB-JUL 1630.0 93 2020.0 116 1230.0 70 1746. 1638 361 108 APR-SEP 2070.0 93 2470.0 111 1680.0 75 2227. 2111 361 108 CLARK FORK BLACKFOOT RIVER ABV, MT APR-SEP 630.0 89 1010.0 143 250.0 36 704. 852 302 110 MISSOULA ABV, MT APR-SEP 1430.0 90 1950.0 122 900.0 56 1595. 1798 535 116 MISSOULA BLO, MT APR-SEP 2590.0 87 3370.0 114 1800.0 61 2962. 3420 895 116 ST. REGIS, MT (1) APR-SEP 3340.0 85 4740.0 121 1940.0 50 3907. 4509 1198 116 PLAINS NR, MT (1) APR-SEP 9440.0 85 12200.0 110 6700.0 61 11060. 12090 2244 91 WHITEHORSE RAPIDS, ID (1) APR-SEP 10400.0 83 13500.0 108 7240.0 58 12460. 13630 2378 82 BLACKFOOT RIVER BONNER NR, MT APR-SEP 795.0 89 1120.0 126 470.0 53 892. 946 232 125 BITTERROOT RIVER AT MOUTH, MT APR-SEP 1160.0 85 1470.0 108 855.0 63 1364. 1597 386 125 Feb-09 Mid Month ________________Forecast______________ __________Runoff___________ Stream and Station Probable % Maximum % Minimum % Average PrevYr CurYR % N.F. FLATHEAD RIVE COLUMBIA FALLS NR, MT APR-SEP 1430.0 79 1770.0 98 1090.0 61 1801. 1865 187 63 M.F. FLATHEAD RIVE WEST GLACIER NR, MT APR-SEP 1440.0 83 1770.0 102 1120.0 64 1740. 2103 192 67 S.F. FLATHEAD RIVE HUNGRY HORSE RES IN, MT (1) JAN-JUL 2050.0 92 2580.0 116 1530.0 69 2224. 2506 345 95 APR-SEP 1970.0 93 2490.0 117 1440.0 68 2124. 2530 345 95 UPPER/MIDDLE COLUMBIA BASINS Feb-09 Mid Month ________________Forecast______________ __________Runoff___________ Stream and Station Probable % Maximum % Minimum % Average PrevYr CurYR % FLATHEAD RIVER COLUMBIA FALLS, MT APR-SEP 4960.0 85 6240.0 107 3690.0 63 5825. 6676 730 74 FLATHEAD LAKE INFLOW, MT (1) APR-SEP 5810.0 87 7400.0 110 4230.0 63 6713. 7562 1156 94 PRIEST RIVER PRIEST RIVER, ID (1) APR-JUL 610.0 75 840.0 103 380.0 47 814. 849 167 66 PEND OREILLE RIVER PEND OREILLE LAKE IN, ID (1) APR-SEP 11300.0 81 14600.0 105 7890.0 57 13910. 15810 3012 86 APR-JUL 10400.0 82 13700.0 108 7000.0 55 12740. 14580 3012 86 BOX CANYON BLO, WA (1) APR-SEP 11400.0 81 14600.0 104 8190.0 58 14090. 16110 3136 87 KETTLE RIVER LAURIER NR, WA APR-SEP 1640.0 83 2050.0 104 1240.0 63 1972. 1517 149 79 COEUR D'ALENE RIVE ENAVILLE, ID (1) APR-SEP 570.0 73 800.0 103 335.0 43 778. 1302 227 58 APR-JUL 540.0 73 770.0 104 305.0 41 739. 1258 227 58 COEUR D'ALENE LAKE IN, ID APR-JUL 1860.0 73 2610.0 102 1110.0 43 2552. 3826 981 74 SPOKANE RIVER SPOKANE, WA (1) APR-SEP 1990.0 73 2110.0 77 1880.0 69 2744. 4128 1053 77 ST JOE RIVER CALDER, ID APR-SEP 895.0 74 1170.0 97 615.0 51 1205. 1656 377 105 APR-JUL 850.0 75 1130.0 99 570.0 50 1136. 1571 377 105 OKANAGAN RIVER TONASKET NR, WA (1) APR-SEP 1070.0 61 1670.0 95 460.0 26 1766. 1542 325 85 SIMILKAMEEN RIVER NIGHTHAWK NR, WA (1) APR-JUL 835.0 62 1230.0 91 435.0 32 1350. 1189 214 97 APR-SEP 895.0 62 1290.0 89 495.0 34 1450. 1259 214 97 METHOW RIVER PATEROS NR, WA (1) APR-SEP 615.0 62 940.0 95 285.0 29 985. 926 164 117 CHELAN RIVER LAKE CHELAN INFLOW, WA (1) APR-SEP 875.0 74 1080.0 91 665.0 56 1185. 1157 310 121 WENATCHEE RIVER PESHASTIN, WA APR-SEP 1270.0 78 1820.0 111 720.0 44 1635. 1521 610 122 YAKIMA AND MAINSTEM SNAKE BASINS Feb-09 Mid Month ________________Forecast______________ __________Runoff___________ Stream and Station Probable % Maximum % Minimum % Average PrevYr CurYR % YAKIMA RIVER KEECHELUS LAKE IN, WA (1) APR-SEP 100.0 75 131.0 98 69.0 52 133. 174 101 100 CLE ELUM, WA APR-SEP 685.0 76 820.0 91 555.0 61 903. 1013 621 121 PARKER NR, WA APR-SEP 1490.0 78 1830.0 95 1140.0 59 1918. 2325 1244 108 KACHESS RIVER KACHESS LAKE INFLOW, WA (1) APR-SEP 85.0 71 111.0 93 59.0 49 120. 150 88 106 CLE ELUM RIVER CLE ELUM LAKE INFLOW, WA (1) APR-SEP 345.0 77 415.0 93 280.0 63 448. 479 232 120 NACHES RIVER NACHES NR, WA APR-SEP 640.0 76 795.0 95 480.0 57 837. 991 433 119 BUMPING RIVER BUMPING LAKE INFLOW, WA (1) APR-SEP 111.0 83 141.0 105 81.0 60 134. 155 61 97 TIETON RIVER RIMROCK LAKE INFLOW, WA (1) APR-SEP 193.0 80 240.0 99 146.0 60 242. 247 114 97 AHTANUM CREEKS TAMPICO NR, WA APR-SEP 38.0 83 56.0 122 20.0 43 46. 0 SNAKE RIVER JACKSON LAKE INFLOW, WY (1) APR-JUL 720.0 88 900.0 110 540.0 66 815. 894 140 80 APR-SEP 800.0 88 975.0 108 620.0 69 904. 970 140 80 PALISADES RES INFLOW, ID (1) APR-JUL 2890.0 87 3600.0 108 2180.0 65 3331. 3352 833 91 APR-SEP 3360.0 87 4080.0 105 2650.0 68 3875. 3850 833 91 HEISE NR, ID APR-JUL 3090.0 87 3880.0 109 2290.0 64 3561. 3644 1013 96 APR-SEP 3600.0 87 4400.0 106 2810.0 68 4159. 4282 1013 96 SHELLEY NR, ID (1) APR-JUL 3960.0 89 4820.0 109 3100.0 70 4428. 4541 1461 92 APR-SEP 4760.0 89 5620.0 106 3900.0 73 5324. 5320 1461 92 BLACKFOOT NR, ID (1) APR-JUL 3990.0 87 4870.0 106 3110.0 68 4604. 0 AMER. FALLS RES IN, ID (1) APR-JUL 2420.0 75 3610.0 111 1230.0 38 3242. 2731 1737 81 MILNER, ID APR-JUL 270.0 22 1170.0 95 159.0 13 1228. 160 173 14 KING HILL, ID (1) APR-JUL 1710.0 56 2760.0 91 660.0 22 3045. 1765 2054 58 MURPHY NR, ID (1) APR-JUL 1840.0 60 2960.0 96 710.0 23 3092. 1549 2248 61 WEISER, ID (1) JAN-JUL 5050.0 52 7450.0 76 2650.0 27 9793. 5966 3057 58 APR-JUL 3010.0 52 5410.0 94 605.0 10 5765. 3926 3057 58 APR-SEP 4400.0 61 6800.0 95 1990.0 28 7192. 5218 3057 58 BROWNLEE RES INFLOW APR-JUL 3340.0 53 5640.0 89 1040.0 16 6313. 4367 3460 61 APR-SEP 4730.0 61 7030.0 90 2430.0 31 7801. 5699 3460 61 HELLS CANYON, ID (1) APR-JUL 3400.0 52 5840.0 90 950.0 15 6493. 4738 3536 62 APR-SEP 4800.0 60 7250.0 91 2360.0 30 7977. 6060 3536 62 LOWER GRANITE RES IN, WA (1) JAN-JUL 22200.0 74 29500.0 98 14900.0 50 30020. 27520 7554 75 FEB-SEP 22200.0 73 29400.0 97 14900.0 49 30370. 28890 7554 75 APR-JUL 16100.0 75 23400.0 109 8870.0 41 21550. 22830 7554 75 APR-SEP 18100.0 75 25300.0 105 10800.0 45 24140. 25390 7554 75 UPPER SNAKE BASINS Feb-09 Mid Month ________________Forecast______________ __________Runoff___________ Stream and Station Probable % Maximum % Minimum % Average PrevYr CurYR % GREY'S RIVER PALISADES ABV, WY APR-SEP 365.0 93 460.0 117 265.0 67 394. 389 74 96 SALT RIVER ETNA NR, WY APR-JUL 310.0 91 450.0 132 172.0 50 342. 311 150 95 HENRYS FORK ASHTON NR, ID APR-JUL 470.0 82 595.0 104 345.0 60 571. 518 366 86 ST. ANTHONY, ID APR-JUL 545.0 74 790.0 108 295.0 40 734. 703 425 85 REXBURG NR, ID APR-JUL 1220.0 78 1610.0 103 820.0 53 1559. 905 520 64 FALLS RIVER SQUIRREL NR, ID (1) APR-JUL 320.0 83 400.0 104 245.0 63 386. 308 80 55 TETON RIVER ST. ANTHONY NR, ID APR-JUL 310.0 77 450.0 112 169.0 42 403. 445 135 96 BIG LOST RIVER MACKAY RESERVOIR INFLOW, ID APR-JUL 103.0 73 180.0 127 26.0 18 142. 80 42 67 WILLOW CREEK RIRIE RESERVOIR INFLOW APR-JUL 73.0 85 109.0 127 37.0 43 86. 41 9 53 PORTNEUF RIVER TOPAZ, ID APR-SEP 76.0 80 101.0 106 50.0 53 95. 61 32 67 GOOSE CREEK OAKLEY RES INFLOW, ID APR-JUL 22.0 76 39.0 134 5.7 20 29. 0 BIG WOOD RIVER HAILEY, ID (1) APR-JUL 168.0 66 275.0 107 60.0 23 256. 185 49 88 MAGIC RESERVOIR INFLOW, ID APR-JUL 164.0 56 330.0 113 0.0 0 291. 172 21 49 LITTLE WOOD RIVER CAREY NR, ID APR-JUL 57.0 66 103.0 118 11.0 13 87. 50 15 75 MIDDLE SNAKE BASINS Feb-09 Mid Month ________________Forecast______________ __________Runoff___________ Stream and Station Probable % Maximum % Minimum % Average PrevYr CurYR % BRUNEAU RIVER HOT SPRING NR, ID APR-JUL 180.0 87 290.0 139 70.0 34 208. 155 26 58 OWYHEE RIVER OWYHEE RES INFLOW, OR MAR-JUL 465.0 76 665.0 108 265.0 43 613. 452 111 52 OWYHEE RES OUTFLOW APR-JUL 24.0 11 175.0 81 5.8 3 217. 53 14 22 BOISE RIVER TWIN SPRINGS NR, ID (1) APR-JUL 475.0 75 610.0 96 335.0 53 636. 655 120 81 BOISE NR, ID (1) APR-JUL 1000.0 71 1410.0 100 585.0 41 1414. 1290 258 71 PARMA NR, ID APR-JUL 140.0 24 505.0 85 85.0 14 593. 319 254 62 S.F. BOISE RIVER ANDERSON RNCH RES IN, ID (1) APR-JUL 375.0 69 485.0 89 265.0 49 542. 442 86 83 MALHEUR RIVER DREWSEY NR, OR MAR-JUL 58.0 53 110.0 100 5.4 5 110. 85 23 55 N.F. MALHEUR RIVER BEULAH RES INFLOW, OR (1) MAR-JUL 45.0 56 69.0 85 20.0 25 81. 80 17 60 PAYETTE RIVER HORSESHOE BEND NR, ID (1) APR-JUL 1060.0 66 1550.0 96 575.0 36 1617. 1701 342 73 EMMETT NR, ID APR-JUL 735.0 59 1270.0 102 340.0 27 1246. 1394 312 59 DEADWOOD RIVER DEADWOOD RES INFLOW, ID (1) APR-JUL 92.0 69 124.0 93 60.0 45 134. 141 24 90 N.F. PAYETTE RIVER CASCADE RES INFLOW, ID (1) APR-JUL 335.0 68 470.0 95 199.0 40 495. 525 109 68 WEISER RIVER WEISER NR, ID (1) APR-JUL 245.0 63 455.0 116 31.0 8 391. 479 88 39 BURNT RIVER HEREFORD NR, OR MAR-JUL 33.0 65 54.0 106 12.9 25 51. 57 14 81 LOWER SNAKE AND CENTRAL OREGON BASINS Feb-09 Mid Month ________________Forecast______________ __________Runoff___________ Stream and Station Probable % Maximum % Minimum % Average PrevYr CurYR % POWDER RIVER SUMPTER NR, OR MAR-JUL 47.0 67 68.0 97 27.0 39 70. 80 IMNAHA RIVER IMNAHA, OR MAR-JUL 220.0 73 305.0 101 138.0 46 301. 337 55 85 SALMON RIVER SALMON, ID (1) APR-JUL 665.0 78 1010.0 118 325.0 38 857. 806 329 88 WHITEBIRD, ID (1) JAN-JUL 5530.0 81 7290.0 107 3770.0 55 6805. 7310 1287 88 APR-JUL 4750.0 81 6510.0 111 2990.0 51 5851. 6560 1287 88 GRANDE RONDE RIVER LA GRANDE, OR MAR-JUL 197.0 79 275.0 110 120.0 48 249. 347 55 76 APR-JUL 146.0 79 225.0 122 69.0 38 184. 301 55 76 TROY, OR (1) MAR-JUL 1330.0 84 1770.0 112 895.0 57 1578. 1971 447 76 APR-JUL 1080.0 85 1520.0 119 640.0 50 1274. 1761 447 76 CLEARWATER RIVER OROFINO, ID (1) APR-JUL 4240.0 91 5790.0 125 2680.0 58 4645. 5729 1228 108 SPALDING, ID (1) JAN-JUL 8510.0 88 10900.0 113 6100.0 63 9683. 10500 2164 96 APR-JUL 6530.0 88 8940.0 120 4130.0 56 7435. 9382 2164 96 APR-SEP 6900.0 88 9300.0 118 4500.0 57 7849. 9851 2164 96 N.F. CLEARWATER RI DWORSHAK RES INFLOW, ID (1) JAN-JUL 3000.0 85 3930.0 111 2080.0 59 3547. 3823 855 92 APR-JUL 2230.0 84 3160.0 120 1300.0 49 2644. 3434 855 92 APR-SEP 2360.0 84 3290.0 117 1440.0 51 2803. 3659 855 92 S.F. WALLA WALLA R MILTON NR, OR APR-JUL 51.0 96 67.0 126 35.0 66 53. 92 42 87 UMATILLA RIVER GIBBON NR, OR APR-JUL 69.0 95 99.0 136 39.0 53 73. 127 57 87 PENDLETON, OR APR-JUL 141.0 95 210.0 141 70.0 47 149. 285 120 78 M.F. JOHN DAY RIVE RITTER, OR (1) MAR-JUL 126.0 79 181.0 113 71.0 44 160. 0 APR-JUL 97.0 79 152.0 124 42.0 34 123. 0 N.F. JOHN DAY RIVE MONUMENT NR, OR APR-JUL 465.0 78 725.0 121 205.0 34 597. 883 120 47 JOHN DAY RIVER SERVICE CREEK, OR (1) MAR-SEP 965.0 84 1400.0 121 525.0 46 1153. 1362 203 48 APR-SEP 725.0 84 1170.0 135 285.0 33 865. 1152 203 48 DESCHUTES RIVER BENHAM FALLS, OR APR-SEP 470.0 89 520.0 98 415.0 79 528. 504 461 113 Feb-09 Mid Month ________________Forecast______________ __________Runoff___________ Stream and Station Probable % Maximum % Minimum % Average PrevYr CurYR % CROOKED RIVER PRINEVILLE RES INFLOW, OR MAR-JUL 152.0 83 230.0 125 75.0 41 184. 143 24 28 OCHOCO CREEK OCHOCO RES INFLOW, OR MAR-JUL 35.0 97 51.0 142 19.6 54 36. 33 WESTSIDE AND SOUTHERN OREGON BASINS Feb-09 Mid Month ________________Forecast______________ __________Runoff___________ Stream and Station Probable % Maximum % Minimum % Average PrevYr CurYR % SKAGIT RIVER CONCRETE NR, WA APR-SEP 4830.0 76 6280.0 99 3380.0 53 6365. 6790 3331 84 COWLITZ RIVER MAYFIELD RES INFLOW, WA JAN-JUL 3170.0 99 4130.0 128 2210.0 69 3217. 3468 2142 95 APR-JUL 1510.0 89 2470.0 146 555.0 33 1689. 2328 2142 95 APR-SEP 1720.0 89 2680.0 139 765.0 40 1922. 2615 2142 95 CASTLE ROCK, WA APR-SEP 2350.0 89 3700.0 140 995.0 38 2639. 3330 3159 89 JAN-JUL 4660.0 99 6010.0 128 3310.0 70 4709. 4998 3159 89 LEWIS RIVER ARIEL, WA JAN-JUL 2170.0 92 2540.0 108 1790.0 76 2351. 2397 1488 76 MCKENZIE RIVER VIDA NR, OR APR-SEP 1050.0 87 1340.0 112 755.0 63 1201. 1674 1338 89 S. SANTIAM RIVER WATERLOO, OR APR-SEP 485.0 83 755.0 129 220.0 37 587. 895 1079 79 N. SANTIAM RIVER MEHAMA, OR APR-SEP 695.0 83 965.0 116 430.0 52 834. 1413 1208 86 WILLAMETTE RIVER SALEM, OR APR-SEP 4080.0 85 5750.0 120 2420.0 50 4804. 6084 7116 69 CLACKAMAS RIVER ESTACADA, OR APR-SEP 630.0 84 835.0 112 425.0 57 748. 1174 846 78 N. UMPQUA RIVER LEMOLO LAKE INFLOW, OR (1) APR-SEP 136.0 90 173.0 115 99.0 66 151. 164 97 86 JAN-JUL 156.0 86 193.0 107 119.0 66 181. 180 97 86 ROGUE RIVER RAYGOLD, OR APR-SEP 750.0 84 980.0 110 520.0 58 889. 1076 748 70 JAN-JUL 1250.0 79 1480.0 93 1030.0 65 1584. 1697 748 70 CHEWAUCAN RIVER PAISLEY NR, OR MAR-JUL 67.0 75 102.0 115 31.0 35 89. 16 SILVIES RIVER BURNS NR, OR MAR-JUL 93.0 72 173.0 134 13.6 11 129. 79 12 45 APR-SEP 71.0 72 151.0 153 0.0 0 99. 82 12 45 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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