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Water Supply Forecasts Northwest River Forecast Center Thursday February 26, 2009 at 15:53 GMT Observed precipitation through the 23th Future precip_ 130% of normal rest of month then assumed to be normal Snow included in this run Observed runoff through January note: current month runoff based on OBSERVED + ESP to the end of FEB UPPER COLUMBIA BASINS Mar-09 EarlyBird ________________Forecast______________ __________Runoff___________ Stream and Station Probable % Maximum % Minimum % Average PrevYr CurYR % COLUMBIA RIVER MICA RESERVOIR INFLOW, BC JAN-JUL 8740.0 91 10200.0 106 7320.0 76 9619. 9199 1732 96 FEB-JUL 8500.0 91 9910.0 106 7080.0 76 9372. 8909 1732 96 APR-SEP 11300.0 90 12700.0 102 9910.0 79 12500. 11570 1732 96 REVELSTOKE, BC JAN-JUL 12800.0 92 14100.0 102 11600.0 84 13880. 13420 2632 102 ARROW LAKES INFLOW JAN-JUL 19200.0 92 21600.0 103 16800.0 80 20960. 19230 4094 90 FEB-JUL 18600.0 92 21000.0 104 16200.0 80 20230. 18670 4094 90 APR-SEP 23100.0 92 25500.0 102 20700.0 82 25110. 22910 4094 90 BIRCHBANK, BC (1) JAN-JUL 34200.0 88 40500.0 104 27900.0 72 38930. 36130 7209 93 APR-SEP 38300.0 88 44600.0 103 32000.0 74 43500. 40800 7209 93 GRAND COULEE, WA (1) JAN-JUL 53400.0 85 63600.0 101 43100.0 69 62900. 59650 11560 85 APR-SEP 54700.0 85 65000.0 102 44500.0 70 63990. 62860 11560 85 ROCK ISLAND DAM BLO, WA (1) JAN-JUL 58400.0 85 70200.0 102 46500.0 67 68910. 64110 12860 88 APR-SEP 59100.0 85 71000.0 102 47300.0 68 69540. 67150 12860 88 THE DALLES NR, OR (1) JAN-JUL 84600.0 79 102000.0 95 66900.0 62 107300. 99210 25080 84 APR-AUG 73300.0 79 91000.0 98 55700.0 60 93090. 93200 25080 84 APR-SEP 77700.0 79 95300.0 97 60000.0 61 98650. 97910 25080 84 KOOTENAI RIVER LIBBY RES INFLOW, MT (1) JAN-JUL 5070.0 80 6470.0 103 3670.0 58 6306. 5516 1005 76 APR-AUG 5070.0 81 6470.0 104 3670.0 59 6248. 5539 1005 76 APR-SEP 5380.0 81 6780.0 102 3980.0 60 6638. 5887 1005 76 LEONIA, ID (1) APR-JUL 5630.0 80 7360.0 105 3910.0 56 7041. 6568 1199 69 APR-SEP 6500.0 80 8220.0 101 4770.0 59 8125. 7516 1199 69 BONNERS FERRY, ID APR-JUL 6150.0 81 7750.0 102 4550.0 60 7619. 7099 1258 68 KOOTENAY RIVER KOOTENAY LAKE INFLOW, BC JAN-JUL 12900.0 81 15700.0 98 10200.0 64 16010. 14250 2471 78 APR-SEP 13400.0 81 16500.0 100 10400.0 63 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 625.0 89 1010.0 143 245.0 35 704. 852 302 110 MISSOULA ABV, MT APR-SEP 1420.0 89 1940.0 122 890.0 56 1595. 1798 535 116 MISSOULA BLO, MT APR-SEP 2580.0 87 3360.0 113 1790.0 60 2962. 3420 895 116 ST. REGIS, MT (1) APR-SEP 3330.0 85 4730.0 121 1930.0 49 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 785.0 88 1110.0 124 460.0 52 892. 946 232 125 BITTERROOT RIVER AT MOUTH, MT APR-SEP 1160.0 85 1470.0 108 855.0 63 1364. 1597 386 125 Mar-09 EarlyBird ________________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 Mar-09 EarlyBird ________________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 615.0 76 845.0 104 385.0 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 14700.0 104 8280.0 59 14090. 16110 3136 87 KETTLE RIVER LAURIER NR, WA APR-SEP 1650.0 84 2050.0 104 1250.0 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 73 775.0 105 305.0 41 739. 1258 227 58 COEUR D'ALENE LAKE IN, ID APR-JUL 1830.0 72 2580.0 101 1070.0 42 2552. 3826 981 74 SPOKANE RIVER SPOKANE, WA (1) APR-SEP 1980.0 72 2090.0 76 1870.0 68 2744. 4128 1053 77 ST JOE RIVER CALDER, ID APR-SEP 865.0 72 1140.0 95 585.0 49 1205. 1656 377 105 APR-JUL 830.0 73 1110.0 98 550.0 48 1136. 1571 377 105 OKANAGAN RIVER TONASKET NR, WA (1) APR-SEP 1050.0 59 1660.0 94 440.0 25 1766. 1542 325 85 SIMILKAMEEN RIVER NIGHTHAWK NR, WA (1) APR-JUL 825.0 61 1220.0 90 425.0 31 1350. 1189 214 97 APR-SEP 885.0 61 1290.0 89 485.0 33 1450. 1259 214 97 METHOW RIVER PATEROS NR, WA (1) APR-SEP 595.0 60 920.0 93 270.0 27 985. 926 164 117 CHELAN RIVER LAKE CHELAN INFLOW, WA (1) APR-SEP 855.0 72 1060.0 89 645.0 54 1185. 1157 310 121 WENATCHEE RIVER PESHASTIN, WA APR-SEP 1210.0 74 1760.0 108 660.0 40 1635. 1521 610 122 YAKIMA AND MAINSTEM SNAKE BASINS Mar-09 EarlyBird ________________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 91 550.0 61 903. 1013 621 121 PARKER NR, WA APR-SEP 1460.0 76 1810.0 94 1120.0 58 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 625.0 75 780.0 93 470.0 56 837. 991 433 119 BUMPING RIVER BUMPING LAKE INFLOW, WA (1) APR-SEP 109.0 81 139.0 104 79.0 59 134. 155 61 97 TIETON RIVER RIMROCK LAKE INFLOW, WA (1) APR-SEP 189.0 78 235.0 97 142.0 59 242. 247 114 97 AHTANUM CREEKS TAMPICO NR, WA APR-SEP 37.0 80 55.0 120 19.4 42 46. 0 SNAKE RIVER JACKSON LAKE INFLOW, WY (1) APR-JUL 735.0 90 915.0 112 555.0 68 815. 894 140 80 APR-SEP 815.0 90 995.0 110 635.0 70 904. 970 140 80 PALISADES RES INFLOW, ID (1) APR-JUL 2930.0 88 3640.0 109 2210.0 66 3331. 3352 833 91 APR-SEP 3410.0 88 4120.0 106 2700.0 70 3875. 3850 833 91 HEISE NR, ID APR-JUL 3130.0 88 3930.0 110 2330.0 65 3561. 3644 1013 96 APR-SEP 3650.0 88 4450.0 107 2850.0 69 4159. 4282 1013 96 SHELLEY NR, ID (1) APR-JUL 4020.0 91 4880.0 110 3160.0 71 4428. 4541 1461 92 APR-SEP 4830.0 91 5690.0 107 3970.0 75 5324. 5320 1461 92 BLACKFOOT NR, ID (1) APR-JUL 4050.0 88 4930.0 107 3170.0 69 4604. 0 AMER. FALLS RES IN, ID (1) APR-JUL 2480.0 76 3670.0 113 1290.0 40 3242. 2731 1737 81 MILNER, ID APR-JUL 280.0 23 1220.0 99 164.0 13 1228. 160 173 14 KING HILL, ID (1) APR-JUL 1720.0 56 2770.0 91 670.0 22 3045. 1765 2054 58 MURPHY NR, ID (1) APR-JUL 1850.0 60 2970.0 96 720.0 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 22100.0 74 29400.0 98 14800.0 49 30020. 27520 7554 75 FEB-SEP 22100.0 73 29300.0 96 14800.0 49 30370. 28890 7554 75 APR-JUL 16100.0 75 23300.0 108 8790.0 41 21550. 22830 7554 75 APR-SEP 18000.0 75 25200.0 104 10700.0 44 24140. 25390 7554 75 UPPER SNAKE BASINS Mar-09 EarlyBird ________________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 91 445.0 130 171.0 50 342. 311 150 95 HENRYS FORK ASHTON NR, ID APR-JUL 470.0 82 600.0 105 345.0 60 571. 518 366 86 ST. ANTHONY, ID APR-JUL 560.0 76 805.0 110 310.0 42 734. 703 425 85 REXBURG NR, ID APR-JUL 1240.0 80 1630.0 105 845.0 54 1559. 905 520 64 FALLS RIVER SQUIRREL NR, ID (1) APR-JUL 330.0 85 405.0 105 250.0 65 386. 308 80 55 TETON RIVER ST. ANTHONY NR, ID APR-JUL 320.0 79 465.0 115 180.0 45 403. 445 135 96 BIG LOST RIVER MACKAY RESERVOIR INFLOW, ID APR-JUL 104.0 73 181.0 127 27.0 19 142. 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 38.0 131 5.4 19 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 54.0 62 100.0 115 8.0 9 87. 50 15 75 MIDDLE SNAKE BASINS Mar-09 EarlyBird ________________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 420.0 69 620.0 101 220.0 36 613. 452 111 52 OWYHEE RES OUTFLOW APR-JUL 18.2 8 130.0 60 3.5 2 217. 53 14 22 BOISE RIVER TWIN SPRINGS NR, ID (1) APR-JUL 465.0 73 605.0 95 330.0 52 636. 655 120 81 BOISE NR, ID (1) APR-JUL 980.0 69 1400.0 99 570.0 40 1414. 1290 258 71 PARMA NR, ID APR-JUL 137.0 23 500.0 84 83.0 14 593. 319 254 62 S.F. BOISE RIVER ANDERSON RNCH RES IN, ID (1) APR-JUL 370.0 68 480.0 89 260.0 48 542. 442 86 83 MALHEUR RIVER DREWSEY NR, OR MAR-JUL 56.0 51 108.0 98 3.8 3 110. 85 23 55 N.F. MALHEUR RIVER BEULAH RES INFLOW, OR (1) MAR-JUL 43.0 53 68.0 84 18.4 23 81. 80 17 60 PAYETTE RIVER HORSESHOE BEND NR, ID (1) APR-JUL 1030.0 64 1520.0 94 540.0 33 1617. 1701 342 73 EMMETT NR, ID APR-JUL 705.0 57 1230.0 99 325.0 26 1246. 1394 312 59 DEADWOOD RIVER DEADWOOD RES INFLOW, ID (1) APR-JUL 86.0 64 118.0 88 54.0 40 134. 141 24 90 N.F. PAYETTE RIVER CASCADE RES INFLOW, ID (1) APR-JUL 330.0 67 465.0 94 193.0 39 495. 525 109 68 WEISER RIVER WEISER NR, ID (1) APR-JUL 245.0 63 455.0 116 33.0 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 Mar-09 EarlyBird ________________Forecast______________ __________Runoff___________ Stream and Station Probable % Maximum % Minimum % Average PrevYr CurYR % POWDER RIVER SUMPTER NR, OR MAR-JUL 48.0 69 69.0 99 28.0 40 70. 80 IMNAHA RIVER IMNAHA, OR MAR-JUL 225.0 75 310.0 103 143.0 48 301. 337 55 85 SALMON RIVER SALMON, ID (1) APR-JUL 660.0 77 1000.0 117 320.0 37 857. 806 329 88 WHITEBIRD, ID (1) JAN-JUL 5470.0 80 7230.0 106 3710.0 55 6805. 7310 1287 88 APR-JUL 4690.0 80 6450.0 110 2930.0 50 5851. 6560 1287 88 GRANDE RONDE RIVER LA GRANDE, OR MAR-JUL 193.0 78 270.0 108 116.0 47 249. 347 55 76 APR-JUL 143.0 78 220.0 120 66.0 36 184. 301 55 76 TROY, OR (1) MAR-JUL 1310.0 83 1740.0 110 865.0 55 1578. 1971 447 76 APR-JUL 1060.0 83 1490.0 117 615.0 48 1274. 1761 447 76 CLEARWATER RIVER OROFINO, ID (1) APR-JUL 4200.0 90 5760.0 124 2640.0 57 4645. 5729 1228 108 SPALDING, ID (1) JAN-JUL 8410.0 87 10800.0 112 6010.0 62 9683. 10500 2164 96 APR-JUL 6450.0 87 8850.0 119 4050.0 54 7435. 9382 2164 96 APR-SEP 6810.0 87 9210.0 117 4410.0 56 7849. 9851 2164 96 N.F. CLEARWATER RI DWORSHAK RES INFLOW, ID (1) JAN-JUL 2960.0 83 3890.0 110 2030.0 57 3547. 3823 855 92 APR-JUL 2190.0 83 3120.0 118 1260.0 48 2644. 3434 855 92 APR-SEP 2320.0 83 3250.0 116 1390.0 50 2803. 3659 855 92 S.F. WALLA WALLA R MILTON NR, OR APR-JUL 49.0 92 65.0 123 33.0 62 53. 92 42 87 UMATILLA RIVER GIBBON NR, OR APR-JUL 68.0 93 98.0 134 37.0 51 73. 127 57 87 PENDLETON, OR APR-JUL 139.0 93 210.0 141 68.0 46 149. 285 120 78 M.F. JOHN DAY RIVE RITTER, OR (1) MAR-JUL 123.0 77 178.0 111 69.0 43 160. 0 APR-JUL 95.0 77 150.0 122 41.0 33 123. 0 N.F. JOHN DAY RIVE MONUMENT NR, OR APR-JUL 455.0 76 715.0 120 195.0 33 597. 883 120 47 JOHN DAY RIVER SERVICE CREEK, OR (1) MAR-SEP 945.0 82 1380.0 120 505.0 44 1153. 1362 203 48 APR-SEP 710.0 82 1150.0 133 270.0 31 865. 1152 203 48 DESCHUTES RIVER BENHAM FALLS, OR APR-SEP 475.0 90 525.0 99 420.0 80 528. 504 461 113 Mar-09 EarlyBird ________________Forecast______________ __________Runoff___________ Stream and Station Probable % Maximum % Minimum % Average PrevYr CurYR % CROOKED RIVER PRINEVILLE RES INFLOW, OR MAR-JUL 153.0 83 230.0 125 76.0 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 Mar-09 EarlyBird ________________Forecast______________ __________Runoff___________ Stream and Station Probable % Maximum % Minimum % Average PrevYr CurYR % SKAGIT RIVER CONCRETE NR, WA APR-SEP 4680.0 74 6130.0 96 3230.0 51 6365. 6790 3331 84 COWLITZ RIVER MAYFIELD RES INFLOW, WA JAN-JUL 3080.0 96 4040.0 126 2120.0 66 3217. 3468 2142 95 APR-JUL 1440.0 85 2400.0 142 480.0 28 1689. 2328 2142 95 APR-SEP 1640.0 85 2600.0 135 680.0 35 1922. 2615 2142 95 CASTLE ROCK, WA APR-SEP 2230.0 85 3580.0 136 875.0 33 2639. 3330 3159 89 JAN-JUL 4530.0 96 5880.0 125 3180.0 68 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 1040.0 87 1330.0 111 750.0 62 1201. 1674 1338 89 S. SANTIAM RIVER WATERLOO, OR APR-SEP 485.0 83 750.0 128 215.0 37 587. 895 1079 79 N. SANTIAM RIVER MEHAMA, OR APR-SEP 690.0 83 960.0 115 425.0 51 834. 1413 1208 86 WILLAMETTE RIVER SALEM, OR APR-SEP 4060.0 85 5730.0 119 2400.0 50 4804. 6084 7116 69 CLACKAMAS RIVER ESTACADA, OR APR-SEP 625.0 84 830.0 111 425.0 57 748. 1174 846 78 N. UMPQUA RIVER LEMOLO LAKE INFLOW, OR (1) APR-SEP 135.0 89 172.0 114 98.0 65 151. 164 97 86 JAN-JUL 155.0 86 193.0 107 118.0 65 181. 180 97 86 ROGUE RIVER RAYGOLD, OR APR-SEP 745.0 84 975.0 110 520.0 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 32.0 36 89. 16 SILVIES RIVER BURNS NR, OR MAR-JUL 93.0 72 173.0 134 13.7 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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