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Water Supply Forecasts Northwest River Forecast Center Thursday March 01, 2007 at 21:51 GMT Observed precipitation through the 26th Future precip is 120% of normal for the Columbia above Coulee for the first half of MAR and normal for all other areas and for rest of period Snow included in this run Observed Runoff through February note: current month runoff based on OBSERVED + ESP to the end of FEB UPPER COLUMBIA BASINS Mar-07 EarlyBird ________________Forecast______________ __________Runoff___________ Stream and Station Probable % Maximum % Minimum % Average PrevYr CurYR % COLUMBIA RIVER MICA RESERVOIR INFLOW, BC JAN-JUL 11000.0 114 12400.0 129 9580.0 100 9619. 9985 1515 84 FEB-SEP 14800.0 114 16300.0 126 13400.0 103 12960. 12300 1515 84 APR-SEP 14300.0 114 15700.0 126 12900.0 103 12500. 11850 1515 84 REVELSTOKE, BC JAN-JUL 15400.0 111 16600.0 120 14200.0 102 13880. 14190 2011 78 ARROW LAKES INFLOW JAN-JUL 23100.0 110 25500.0 122 20700.0 99 20960. 20790 3476 76 FEB-SEP 29300.0 111 31700.0 120 26900.0 102 26460. 24050 3476 76 APR-SEP 28100.0 112 30500.0 121 25700.0 102 25110. 22920 3476 76 BIRCHBANK, BC (1) JAN-JUL 42900.0 110 49200.0 126 36600.0 94 38930. 41180 6846 88 APR-SEP 48400.0 111 54700.0 126 42100.0 97 43500. 42860 6846 88 GRAND COULEE, WA (1) JAN-JUL 66700.0 106 77000.0 122 56500.0 90 62900. 66890 12580 93 APR-SEP 69000.0 108 79300.0 124 58800.0 92 63990. 63870 12580 93 ROCK ISLAND DAM BLO, WA (1) JAN-JUL 74900.0 109 86700.0 126 63000.0 91 68910. 71930 13940 95 APR-SEP 76900.0 111 88700.0 128 65000.0 93 69540. 68910 13940 95 THE DALLES NR, OR (1) JAN-JUL 103000.0 96 121000.0 113 85900.0 80 107300. 114700 27330 92 APR-AUG 91700.0 99 109000.0 117 74100.0 80 93090. 97540 27330 92 APR-SEP 97200.0 99 115000.0 117 79500.0 81 98650. 101700 27330 92 KOOTENAI RIVER LIBBY RES INFLOW, MT (1) JAN-JUL 6730.0 107 8130.0 129 5330.0 85 6306. 6909 1275 97 APR-AUG 6740.0 108 8140.0 130 5340.0 85 6248. 6628 1275 97 APR-SEP 7160.0 108 8560.0 129 5760.0 87 6638. 6922 1275 97 LEONIA, ID (1) APR-JUL 7620.0 108 9340.0 133 5890.0 84 7041. 7768 1804 103 APR-SEP 8790.0 108 10500.0 129 7070.0 87 8125. 8545 1804 103 BONNERS FERRY, ID APR-JUL 8270.0 109 9870.0 130 6690.0 88 7619. 8380 1926 104 KOOTENAY RIVER KOOTENAY LAKE INFLOW, BC JAN-JUL 17700.0 111 20300.0 127 15000.0 94 16010. 17210 3156 100 APR-SEP 18400.0 112 21200.0 129 15400.0 94 16450. 16790 3156 100 DUNCAN RIVER DUNCAN RESERVOIR INFLOW, BC JAN-JUL 1950.0 108 2350.0 131 1560.0 87 1800. 2033 309 92 FEB-SEP 2490.0 108 2890.0 125 2100.0 91 2305. 2361 309 92 APR-SEP 2410.0 108 2800.0 126 2010.0 90 2227. 2291 309 92 CLARK FORK BLACKFOOT RIVER ABV, MT APR-SEP 670.0 95 1050.0 149 290.0 41 704. 504 255 93 MISSOULA ABV, MT APR-SEP 1500.0 94 2020.0 127 975.0 61 1595. 1344 463 101 MISSOULA BLO, MT APR-SEP 2770.0 94 3560.0 120 1990.0 67 2962. 2770 824 107 ST. REGIS, MT (1) APR-SEP 3710.0 95 5110.0 131 2310.0 59 3907. 3648 1061 103 PLAINS NR, MT (1) APR-SEP 11100.0 100 13800.0 125 8340.0 75 11060. 10840 2607 106 WHITEHORSE RAPIDS, ID (1) APR-SEP 12300.0 99 15400.0 124 9130.0 73 12460. 12060 2893 100 BLACKFOOT RIVER BONNER NR, MT APR-SEP 830.0 93 1150.0 129 500.0 56 892. 840 209 113 BITTERROOT RIVER AT MOUTH, MT APR-SEP 1280.0 94 1580.0 116 975.0 71 1364. 1319 347 112 Mar-07 EarlyBird ________________Forecast______________ __________Runoff___________ Stream and Station Probable % Maximum % Minimum % Average PrevYr CurYR % N.F. FLATHEAD RIVE COLUMBIA FALLS NR, MT APR-SEP 1890.0 105 2230.0 124 1550.0 86 1801. 1780 424 142 M.F. FLATHEAD RIVE WEST GLACIER NR, MT APR-SEP 1790.0 103 2110.0 121 1460.0 84 1740. 1737 385 135 S.F. FLATHEAD RIVE HUNGRY HORSE RES IN, MT (1) JAN-JUL 2180.0 98 2700.0 121 1650.0 74 2224. 2357 409 112 APR-SEP 2100.0 99 2620.0 123 1570.0 74 2124. 2175 409 112 UPPER/MIDDLE COLUMBIA BASINS Mar-07 EarlyBird ________________Forecast______________ __________Runoff___________ Stream and Station Probable % Maximum % Minimum % Average PrevYr CurYR % FLATHEAD RIVER COLUMBIA FALLS, MT APR-SEP 5930.0 102 7210.0 124 4650.0 80 5825. 6002 1188 120 FLATHEAD LAKE INFLOW, MT (1) APR-SEP 6900.0 103 8490.0 126 5320.0 79 6713. 7002 1578 129 PRIEST RIVER PRIEST RIVER, ID (1) APR-JUL 865.0 106 1090.0 134 635.0 78 814. 997 264 104 PEND OREILLE RIVER PEND OREILLE LAKE IN, ID (1) APR-SEP 13900.0 100 17200.0 124 10500.0 75 13910. 14260 3859 110 APR-JUL 12700.0 100 16100.0 126 9380.0 74 12740. 13520 3859 110 BOX CANYON BLO, WA (1) APR-SEP 14200.0 101 17300.0 123 11000.0 78 14090. 14500 4009 111 KETTLE RIVER LAURIER NR, WA APR-SEP 2080.0 105 2490.0 126 1680.0 85 1972. 2366 117 62 COEUR D'ALENE RIVE ENAVILLE, ID (1) APR-SEP 780.0 100 1010.0 130 545.0 70 778. 871 435 111 APR-JUL 740.0 100 975.0 132 510.0 69 739. 841 435 111 COEUR D'ALENE LAKE IN, ID APR-JUL 2510.0 98 3270.0 128 1760.0 69 2552. 2456 1324 100 SPOKANE RIVER SPOKANE, WA (1) APR-SEP 2880.0 105 2990.0 109 2760.0 101 2744. 2705 1406 102 ST JOE RIVER CALDER, ID APR-SEP 1200.0 100 1480.0 123 925.0 77 1205. 1263 406 114 APR-JUL 1130.0 99 1410.0 124 850.0 75 1136. 1203 406 114 OKANAGAN RIVER TONASKET NR, WA (1) APR-SEP 2000.0 113 2610.0 148 1400.0 79 1766. 1470 453 118 SIMILKAMEEN RIVER NIGHTHAWK NR, WA (1) APR-JUL 1670.0 124 2070.0 153 1270.0 94 1350. 1079 354 161 APR-SEP 1790.0 123 2190.0 151 1390.0 96 1450. 1122 354 161 METHOW RIVER PATEROS NR, WA (1) APR-SEP 1160.0 118 1490.0 151 835.0 85 985. 1144 194 138 CHELAN RIVER LAKE CHELAN INFLOW, WA (1) APR-SEP 1390.0 117 1600.0 135 1180.0 100 1185. 1345 386 150 WENATCHEE RIVER PESHASTIN, WA APR-SEP 1970.0 120 2520.0 154 1420.0 87 1635. 1669 619 124 YAKIMA AND MAINSTEM SNAKE BASINS Mar-07 EarlyBird ________________Forecast______________ __________Runoff___________ Stream and Station Probable % Maximum % Minimum % Average PrevYr CurYR % YAKIMA RIVER KEECHELUS LAKE IN, WA (1) APR-SEP 151.0 114 182.0 137 119.0 89 133. 137 103 102 CLE ELUM, WA APR-SEP 1030.0 114 1170.0 130 900.0 100 903. 906 593 116 PARKER NR, WA APR-SEP 2190.0 114 2530.0 132 1840.0 96 1918. 2346 1423 123 KACHESS RIVER KACHESS LAKE INFLOW, WA (1) APR-SEP 135.0 113 161.0 134 109.0 91 120. 122 96 115 CLE ELUM RIVER CLE ELUM LAKE INFLOW, WA (1) APR-SEP 510.0 114 575.0 128 445.0 99 448. 475 232 120 NACHES RIVER NACHES NR, WA APR-SEP 925.0 111 1080.0 129 770.0 92 837. 1086 564 155 BUMPING RIVER BUMPING LAKE INFLOW, WA (1) APR-SEP 153.0 114 183.0 137 123.0 92 134. 154 88 140 TIETON RIVER RIMROCK LAKE INFLOW, WA (1) APR-SEP 265.0 110 310.0 128 220.0 91 242. 244 157 133 AHTANUM CREEKS TAMPICO NR, WA APR-SEP 54.0 117 72.0 157 36.0 78 46. 0 SNAKE RIVER JACKSON LAKE INFLOW, WY (1) APR-SEP 770.0 85 950.0 105 595.0 66 904. 861 155 89 APR-JUL 695.0 85 875.0 107 515.0 63 815. 812 155 89 PALISADES RES INFLOW, ID (1) APR-JUL 2660.0 80 3370.0 101 1940.0 58 3331. 3267 846 92 HEISE NR, ID APR-JUL 2840.0 80 3640.0 102 2040.0 57 3561. 3618 1010 96 SHELLEY NR, ID (1) APR-JUL 3810.0 86 4670.0 105 2950.0 67 4428. 4634 1645 103 BLACKFOOT NR, ID (1) APR-JUL 3840.0 83 4720.0 103 2960.0 64 4604. 0 AMER. FALLS RES IN, ID (1) APR-JUL 2270.0 70 3460.0 107 1080.0 33 3242. 2929 1878 88 MILNER, ID APR-JUL 161.0 13 345.0 28 135.0 11 1228. 996 369 29 KING HILL, ID (1) APR-JUL 1640.0 54 2690.0 88 590.0 19 3045. 3030 2397 67 MURPHY NR, ID (1) APR-JUL 1740.0 56 2860.0 92 610.0 20 3092. 3104 2502 68 WEISER, ID (1) JAN-JUL 5800.0 59 8200.0 84 3400.0 35 9793. 12140 3604 68 APR-JUL 3360.0 58 5760.0 100 950.0 16 5765. 8160 3604 68 BROWNLEE RES INFLOW APR-JUL 3760.0 60 6050.0 96 1460.0 23 6313. 8975 3837 68 HELLS CANYON, ID (1) APR-JUL 3840.0 59 6290.0 97 1400.0 22 6493. 9324 3955 70 LOWER GRANITE RES IN, WA (1) JAN-JUL 23800.0 79 31000.0 103 16500.0 55 30020. 32200 8150 81 FEB-SEP 24300.0 80 31600.0 104 17100.0 56 30370. 31790 8150 81 APR-JUL 17500.0 81 24800.0 115 10200.0 47 21550. 24440 8150 81 UPPER SNAKE BASINS Mar-07 EarlyBird ________________Forecast______________ __________Runoff___________ Stream and Station Probable % Maximum % Minimum % Average PrevYr CurYR % GREY'S RIVER PALISADES ABV, WY APR-SEP 305.0 77 400.0 102 210.0 53 394. 401 83 108 SALT RIVER ETNA NR, WY APR-JUL 255.0 75 395.0 115 119.0 35 342. 363 149 94 HENRYS FORK ASHTON NR, ID APR-JUL 525.0 92 650.0 114 395.0 69 571. 659 412 97 ST. ANTHONY, ID APR-JUL 660.0 90 905.0 123 410.0 56 734. 819 529 106 REXBURG NR, ID APR-JUL 1400.0 90 1790.0 115 1000.0 64 1559. 1016 682 84 FALLS RIVER SQUIRREL NR, ID (1) APR-JUL 330.0 85 410.0 106 255.0 66 386. 370 115 79 TETON RIVER ST. ANTHONY NR, ID APR-JUL 340.0 84 480.0 119 198.0 49 403. 464 156 110 BIG LOST RIVER MACKAY RESERVOIR INFLOW, ID APR-JUL 107.0 75 184.0 130 30.0 21 142. 229 54 87 WILLOW CREEK RIRIE RESERVOIR INFLOW APR-JUL 58.0 67 94.0 109 22.0 26 86. 94 15 88 PORTNEUF RIVER TOPAZ, ID APR-SEP 74.0 78 99.0 104 49.0 52 95. 120 41 86 GOOSE CREEK OAKLEY RES INFLOW, ID APR-JUL 22.0 76 38.0 131 5.1 18 29. 0 BIG WOOD RIVER HAILEY, ID (1) APR-JUL 186.0 73 295.0 115 78.0 30 256. 431 56 100 MAGIC RESERVOIR INFLOW, ID APR-JUL 162.0 56 330.0 113 0.0 0 291. 591 42 99 LITTLE WOOD RIVER CAREY NR, ID APR-JUL 56.0 64 102.0 117 10.0 11 87. 163 20 100 MIDDLE SNAKE BASINS Mar-07 EarlyBird ________________Forecast______________ __________Runoff___________ Stream and Station Probable % Maximum % Minimum % Average PrevYr CurYR % BRUNEAU RIVER HOT SPRING NR, ID APR-JUL 151.0 73 260.0 125 41.0 20 208. 276 34 76 OWYHEE RIVER OWYHEE RES INFLOW, OR MAR-JUL 350.0 57 550.0 90 148.0 24 613. 1050 153 71 OWYHEE RES OUTFLOW APR-JUL 28.0 13 210.0 97 7.4 3 217. 594 17 27 BOISE RIVER TWIN SPRINGS NR, ID (1) APR-JUL 510.0 80 650.0 102 375.0 59 636. 828 144 97 BOISE NR, ID (1) APR-JUL 1100.0 78 1520.0 107 690.0 49 1414. 2060 323 89 PARMA NR, ID APR-JUL 134.0 23 510.0 86 72.0 12 593. 1102 252 61 S.F. BOISE RIVER ANDERSON RNCH RES IN, ID (1) APR-JUL 420.0 77 530.0 98 310.0 57 542. 816 103 99 MALHEUR RIVER DREWSEY NR, OR MAR-JUL 66.0 60 118.0 107 13.2 12 110. 239 30 72 N.F. MALHEUR RIVER BEULAH RES INFLOW, OR (1) MAR-JUL 54.0 67 79.0 98 30.0 37 81. 155 21 74 PAYETTE RIVER HORSESHOE BEND NR, ID (1) APR-JUL 1360.0 84 1850.0 114 870.0 54 1617. 2214 426 91 EMMETT NR, ID APR-JUL 1060.0 85 1590.0 128 530.0 43 1246. 1977 339 64 DEADWOOD RIVER DEADWOOD RES INFLOW, ID (1) APR-JUL 113.0 84 145.0 108 81.0 60 134. 180 27 102 N.F. PAYETTE RIVER CASCADE RES INFLOW, ID (1) APR-JUL 430.0 87 565.0 114 295.0 60 495. 684 146 92 WEISER RIVER WEISER NR, ID (1) APR-JUL 320.0 82 530.0 136 108.0 28 391. 717 131 59 BURNT RIVER HEREFORD NR, OR MAR-JUL 32.0 63 52.0 102 11.2 22 51. 81 13 76 LOWER SNAKE AND CENTRAL OREGON BASINS Mar-07 EarlyBird ________________Forecast______________ __________Runoff___________ Stream and Station Probable % Maximum % Minimum % Average PrevYr CurYR % POWDER RIVER SUMPTER NR, OR MAR-JUL 46.0 66 67.0 96 26.0 37 70. 90 IMNAHA RIVER IMNAHA, OR MAR-JUL 235.0 78 320.0 106 152.0 50 301. 394 56 87 SALMON RIVER SALMON, ID (1) APR-JUL 745.0 87 1090.0 127 405.0 47 857. 1078 387 104 WHITEBIRD, ID (1) JAN-JUL 5960.0 88 7720.0 113 4200.0 62 6805. 7274 1415 96 APR-JUL 5140.0 88 6900.0 118 3380.0 58 5851. 6441 1415 96 GRANDE RONDE RIVER LA GRANDE, OR MAR-JUL 171.0 69 250.0 100 94.0 38 249. 238 62 86 APR-JUL 126.0 68 205.0 111 49.0 27 184. 202 62 86 TROY, OR (1) MAR-JUL 1300.0 82 1740.0 110 865.0 55 1578. 1573 522 89 APR-JUL 1050.0 82 1490.0 117 615.0 48 1274. 1369 522 89 CLEARWATER RIVER OROFINO, ID (1) APR-JUL 4420.0 95 5980.0 129 2860.0 62 4645. 4316 1213 106 SPALDING, ID (1) JAN-JUL 9130.0 94 11500.0 119 6730.0 70 9683. 9175 2446 108 APR-JUL 7140.0 96 9540.0 128 4740.0 64 7435. 7274 2446 108 APR-SEP 7530.0 96 9930.0 127 5130.0 65 7849. 7550 2446 108 N.F. CLEARWATER RI DWORSHAK RES INFLOW, ID (1) JAN-JUL 3310.0 93 4240.0 120 2380.0 67 3547. 3507 1012 109 APR-JUL 2540.0 96 3460.0 131 1610.0 61 2644. 2676 1012 109 APR-SEP 2700.0 96 3630.0 130 1770.0 63 2803. 2786 1012 109 S.F. WALLA WALLA R MILTON NR, OR APR-JUL 55.0 104 72.0 136 39.0 74 53. 63 56 116 UMATILLA RIVER GIBBON NR, OR APR-JUL 70.0 96 100.0 137 40.0 55 73. 86 77 118 PENDLETON, OR APR-JUL 131.0 88 200.0 134 60.0 40 149. 178 178 116 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 485.0 81 745.0 125 225.0 38 597. 745 262 102 JOHN DAY RIVER SERVICE CREEK, OR (1) MAR-SEP 885.0 77 1320.0 114 445.0 39 1153. 1235 310 74 APR-SEP 665.0 77 1110.0 128 225.0 26 865. 1038 310 74 DESCHUTES RIVER BENHAM FALLS, OR APR-SEP 490.0 93 545.0 103 440.0 83 528. 497 373 92 Mar-07 EarlyBird ________________Forecast______________ __________Runoff___________ Stream and Station Probable % Maximum % Minimum % Average PrevYr CurYR % CROOKED RIVER PRINEVILLE RES INFLOW, OR MAR-JUL 114.0 62 191.0 104 38.0 21 184. 316 62 72 OCHOCO CREEK OCHOCO RES INFLOW, OR MAR-JUL 18.3 51 34.0 94 2.7 8 36. 59 WESTSIDE AND SOUTHERN OREGON BASINS Mar-07 EarlyBird ________________Forecast______________ __________Runoff___________ Stream and Station Probable % Maximum % Minimum % Average PrevYr CurYR % SKAGIT RIVER CONCRETE NR, WA APR-SEP 6940.0 109 8390.0 132 5490.0 86 6365. 5621 4696 118 COWLITZ RIVER MAYFIELD RES INFLOW, WA JAN-JUL 3160.0 98 4120.0 128 2200.0 68 3217. 3453 2684 119 APR-JUL 1740.0 103 2700.0 160 780.0 46 1689. 1642 2684 119 APR-SEP 1980.0 103 2940.0 153 1020.0 53 1922. 1817 2684 119 CASTLE ROCK, WA APR-SEP 2600.0 99 3960.0 150 1250.0 47 2639. 2380 4291 122 JAN-JUL 4550.0 97 5900.0 125 3190.0 68 4709. 5136 4291 122 LEWIS RIVER ARIEL, WA JAN-JUL 2140.0 91 2510.0 107 1760.0 75 2351. 2514 2087 107 MCKENZIE RIVER VIDA NR, OR APR-SEP 1170.0 97 1460.0 122 875.0 73 1201. 1142 1659 111 S. SANTIAM RIVER WATERLOO, OR APR-SEP 545.0 93 815.0 139 280.0 48 587. 540 1548 114 N. SANTIAM RIVER MEHAMA, OR APR-SEP 785.0 94 1050.0 126 515.0 62 834. 754 1613 115 WILLAMETTE RIVER SALEM, OR APR-SEP 4350.0 91 6010.0 125 2690.0 56 4804. 4373 10960 107 CLACKAMAS RIVER ESTACADA, OR APR-SEP 725.0 97 925.0 124 520.0 70 748. 678 1300 119 N. UMPQUA RIVER LEMOLO LAKE INFLOW, OR (1) APR-SEP 139.0 92 176.0 117 102.0 68 151. 156 80 71 JAN-JUL 151.0 83 188.0 104 114.0 63 181. 195 80 71 ROGUE RIVER RAYGOLD, OR APR-SEP 845.0 95 1070.0 120 615.0 69 889. 895 960 89 JAN-JUL 1380.0 87 1610.0 102 1150.0 73 1584. 1970 960 89 CHEWAUCAN RIVER PAISLEY NR, OR MAR-JUL 63.0 71 99.0 111 28.0 31 89. 16 SILVIES RIVER BURNS NR, OR MAR-JUL 90.0 70 170.0 132 10.5 8 129. 196 17 63 APR-SEP 69.0 70 149.0 151 0.0 0 99. 167 17 63 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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