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Water Supply Forecasts Northwest River Forecast Center Thursday March 15, 2007 at 20:17 GMT Observed precipitation through the 12th Future precip assumed to be normal No snow included Observed runoff through February note: current month runoff based on OBSERVED + ESP to the end of MAR UPPER COLUMBIA BASINS Mar-07 Mid Month ________________Forecast______________ __________Runoff___________ Stream and Station Probable % Maximum % Minimum % Average PrevYr CurYR % COLUMBIA RIVER MICA RESERVOIR INFLOW, BC JAN-JUL 10500.0 109 11800.0 123 9160.0 95 9619. 9985 1818 89 FEB-SEP 14100.0 109 15500.0 120 12800.0 99 12960. 12300 1818 89 APR-SEP 13600.0 109 14900.0 119 12300.0 98 12500. 11850 1818 89 REVELSTOKE, BC JAN-JUL 14800.0 107 16000.0 115 13700.0 99 13880. 14190 2447 83 ARROW LAKES INFLOW JAN-JUL 22200.0 106 24300.0 116 20100.0 96 20960. 20790 4378 83 FEB-SEP 28200.0 107 30300.0 115 26200.0 99 26460. 24050 4378 83 APR-SEP 26900.0 107 28900.0 115 24800.0 99 25110. 22920 4378 83 BIRCHBANK, BC (1) JAN-JUL 41500.0 107 46800.0 120 36300.0 93 38930. 41180 8901 96 APR-SEP 46400.0 107 51600.0 119 41100.0 94 43500. 42860 8901 96 GRAND COULEE, WA (1) JAN-JUL 64400.0 102 73000.0 116 55900.0 89 62900. 66890 17030 98 APR-SEP 66000.0 103 74500.0 116 57400.0 90 63990. 63870 17030 98 ROCK ISLAND DAM BLO, WA (1) JAN-JUL 72500.0 105 82000.0 119 63100.0 92 68910. 71930 19040 101 APR-SEP 73700.0 106 83100.0 119 64200.0 92 69540. 68910 19040 101 THE DALLES NR, OR (1) JAN-JUL 101000.0 94 114000.0 106 87300.0 81 107300. 114700 36960 94 APR-AUG 88500.0 95 102000.0 110 74900.0 80 93090. 97540 36960 94 APR-SEP 93700.0 95 107000.0 108 80100.0 81 98650. 101700 36960 94 KOOTENAI RIVER LIBBY RES INFLOW, MT (1) JAN-JUL 6610.0 105 7910.0 125 5310.0 84 6306. 6909 1549 99 APR-AUG 6600.0 106 7900.0 126 5300.0 85 6248. 6628 1549 99 APR-SEP 7010.0 106 8310.0 125 5710.0 86 6638. 6922 1549 99 LEONIA, ID (1) APR-JUL 7320.0 104 8900.0 126 5740.0 82 7041. 7768 2343 108 APR-SEP 8450.0 104 10000.0 123 6870.0 85 8125. 8545 2343 108 BONNERS FERRY, ID APR-JUL 7880.0 103 9380.0 123 6340.0 83 7619. 8380 2559 110 KOOTENAY RIVER KOOTENAY LAKE INFLOW, BC JAN-JUL 17200.0 107 19700.0 123 14800.0 92 16010. 17210 4125 106 APR-SEP 17700.0 108 20500.0 125 14900.0 91 16450. 16790 4125 106 DUNCAN RIVER DUNCAN RESERVOIR INFLOW, BC JAN-JUL 1920.0 107 2290.0 127 1540.0 86 1800. 2033 367 97 FEB-SEP 2440.0 106 2820.0 122 2070.0 90 2305. 2361 367 97 APR-SEP 2350.0 106 2720.0 122 1970.0 88 2227. 2291 367 97 CLARK FORK BLACKFOOT RIVER ABV, MT APR-SEP 650.0 92 985.0 140 320.0 45 704. 504 339 98 MISSOULA ABV, MT APR-SEP 1370.0 86 1830.0 115 915.0 57 1595. 1344 636 109 MISSOULA BLO, MT APR-SEP 2540.0 86 3230.0 109 1840.0 62 2962. 2770 1105 113 ST. REGIS, MT (1) APR-SEP 3400.0 87 4470.0 114 2330.0 60 3907. 3648 1461 110 PLAINS NR, MT (1) APR-SEP 10100.0 91 12400.0 112 7820.0 71 11060. 10840 3440 110 WHITEHORSE RAPIDS, ID (1) APR-SEP 11300.0 91 14000.0 112 8690.0 70 12460. 12060 3956 106 BLACKFOOT RIVER BONNER NR, MT APR-SEP 705.0 79 990.0 111 415.0 47 892. 840 298 124 BITTERROOT RIVER AT MOUTH, MT APR-SEP 1170.0 86 1450.0 106 880.0 65 1364. 1319 453 116 Mar-07 Mid Month ________________Forecast______________ __________Runoff___________ Stream and Station Probable % Maximum % Minimum % Average PrevYr CurYR % N.F. FLATHEAD RIVE COLUMBIA FALLS NR, MT APR-SEP 1730.0 96 2080.0 115 1380.0 77 1801. 1780 526 146 M.F. FLATHEAD RIVE WEST GLACIER NR, MT APR-SEP 1640.0 94 1930.0 111 1350.0 78 1740. 1737 467 134 S.F. FLATHEAD RIVE HUNGRY HORSE RES IN, MT (1) JAN-JUL 2010.0 90 2460.0 111 1570.0 71 2224. 2357 554 120 APR-SEP 1880.0 89 2320.0 109 1430.0 67 2124. 2175 554 120 UPPER/MIDDLE COLUMBIA BASINS Mar-07 Mid Month ________________Forecast______________ __________Runoff___________ Stream and Station Probable % Maximum % Minimum % Average PrevYr CurYR % FLATHEAD RIVER COLUMBIA FALLS, MT APR-SEP 5390.0 93 6660.0 114 4120.0 71 5825. 6002 1527 125 FLATHEAD LAKE INFLOW, MT (1) APR-SEP 6370.0 95 7750.0 115 4990.0 74 6713. 7002 2023 130 PRIEST RIVER PRIEST RIVER, ID (1) APR-JUL 840.0 103 1060.0 130 620.0 76 814. 997 375 104 PEND OREILLE RIVER PEND OREILLE LAKE IN, ID (1) APR-SEP 12800.0 92 15700.0 113 9860.0 71 13910. 14260 5258 114 APR-JUL 11700.0 92 14600.0 115 8790.0 69 12740. 13520 5258 114 BOX CANYON BLO, WA (1) APR-SEP 13000.0 92 16000.0 114 10100.0 72 14090. 14500 5458 114 KETTLE RIVER LAURIER NR, WA APR-SEP 1990.0 101 2360.0 120 1620.0 82 1972. 2366 170 62 COEUR D'ALENE RIVE ENAVILLE, ID (1) APR-SEP 740.0 95 940.0 121 545.0 70 778. 871 717 123 APR-JUL 705.0 95 900.0 122 510.0 69 739. 841 717 123 COEUR D'ALENE LAKE IN, ID APR-JUL 2420.0 95 3050.0 120 1780.0 70 2552. 2456 2095 108 SPOKANE RIVER SPOKANE, WA (1) APR-SEP 2850.0 104 2930.0 107 2770.0 101 2744. 2705 2128 106 ST JOE RIVER CALDER, ID APR-SEP 1140.0 95 1370.0 114 905.0 75 1205. 1263 613 120 APR-JUL 1070.0 94 1300.0 114 840.0 74 1136. 1203 613 120 OKANAGAN RIVER TONASKET NR, WA (1) APR-SEP 2070.0 117 2630.0 149 1510.0 86 1766. 1470 653 134 SIMILKAMEEN RIVER NIGHTHAWK NR, WA (1) APR-JUL 1680.0 124 2050.0 152 1320.0 98 1350. 1079 471 174 APR-SEP 1810.0 125 2180.0 150 1450.0 100 1450. 1122 471 174 METHOW RIVER PATEROS NR, WA (1) APR-SEP 1060.0 108 1310.0 133 815.0 83 985. 1144 282 158 CHELAN RIVER LAKE CHELAN INFLOW, WA (1) APR-SEP 1350.0 114 1530.0 129 1180.0 100 1185. 1345 488 149 WENATCHEE RIVER PESHASTIN, WA APR-SEP 1800.0 110 2330.0 143 1270.0 78 1635. 1669 863 136 YAKIMA AND MAINSTEM SNAKE BASINS Mar-07 Mid Month ________________Forecast______________ __________Runoff___________ Stream and Station Probable % Maximum % Minimum % Average PrevYr CurYR % YAKIMA RIVER KEECHELUS LAKE IN, WA (1) APR-SEP 155.0 117 181.0 136 128.0 96 133. 137 138 115 CLE ELUM, WA APR-SEP 1050.0 116 1150.0 127 945.0 105 903. 906 833 131 PARKER NR, WA APR-SEP 2190.0 114 2410.0 126 1970.0 103 1918. 2346 2074 139 KACHESS RIVER KACHESS LAKE INFLOW, WA (1) APR-SEP 140.0 117 159.0 133 120.0 100 120. 122 131 129 CLE ELUM RIVER CLE ELUM LAKE INFLOW, WA (1) APR-SEP 525.0 117 580.0 129 470.0 105 448. 475 328 138 NACHES RIVER NACHES NR, WA APR-SEP 930.0 111 1030.0 123 835.0 100 837. 1086 818 173 BUMPING RIVER BUMPING LAKE INFLOW, WA (1) APR-SEP 153.0 114 171.0 128 136.0 101 134. 154 117 153 TIETON RIVER RIMROCK LAKE INFLOW, WA (1) APR-SEP 270.0 112 305.0 126 240.0 99 242. 244 206 142 AHTANUM CREEKS TAMPICO NR, WA APR-SEP 53.0 115 70.0 152 36.0 78 46. 0 SNAKE RIVER JACKSON LAKE INFLOW, WY (1) APR-SEP 760.0 84 900.0 100 620.0 69 904. 861 187 90 APR-JUL 685.0 84 830.0 102 545.0 67 815. 812 187 90 PALISADES RES INFLOW, ID (1) APR-JUL 2620.0 79 3160.0 95 2070.0 62 3331. 3267 1019 93 HEISE NR, ID APR-JUL 2790.0 78 3390.0 95 2180.0 61 3561. 3618 1209 96 SHELLEY NR, ID (1) APR-JUL 3700.0 84 4430.0 100 2970.0 67 4428. 4634 1960 105 BLACKFOOT NR, ID (1) APR-JUL 3720.0 81 4480.0 97 2970.0 65 4604. 0 AMER. FALLS RES IN, ID (1) APR-JUL 2190.0 68 3260.0 101 1130.0 35 3242. 2929 2303 89 MILNER, ID APR-JUL 153.0 12 255.0 21 135.0 11 1228. 996 596 37 KING HILL, ID (1) APR-JUL 1630.0 54 2590.0 85 680.0 22 3045. 3030 3011 69 MURPHY NR, ID (1) APR-JUL 1730.0 56 2720.0 88 730.0 24 3092. 3104 3138 69 WEISER, ID (1) JAN-JUL 5690.0 58 7430.0 76 3940.0 40 9793. 12140 4586 66 APR-JUL 3230.0 56 4980.0 86 1480.0 26 5765. 8160 4586 66 BROWNLEE RES INFLOW APR-JUL 3580.0 57 5740.0 91 1420.0 22 6313. 8975 4910 66 HELLS CANYON, ID (1) APR-JUL 3650.0 56 5590.0 86 1710.0 26 6493. 9324 5087 68 LOWER GRANITE RES IN, WA (1) JAN-JUL 22600.0 75 27500.0 92 17600.0 59 30020. 32200 11240 82 FEB-SEP 23000.0 76 28000.0 92 18100.0 60 30370. 31790 11240 82 APR-JUL 16100.0 75 21100.0 98 11200.0 52 21550. 24440 11240 82 UPPER SNAKE BASINS Mar-07 Mid Month ________________Forecast______________ __________Runoff___________ Stream and Station Probable % Maximum % Minimum % Average PrevYr CurYR % GREY'S RIVER PALISADES ABV, WY APR-SEP 300.0 76 370.0 94 230.0 58 394. 401 101 110 SALT RIVER ETNA NR, WY APR-JUL 235.0 69 335.0 98 134.0 39 342. 363 179 95 HENRYS FORK ASHTON NR, ID APR-JUL 490.0 86 610.0 107 370.0 65 571. 659 467 92 ST. ANTHONY, ID APR-JUL 630.0 86 845.0 115 420.0 57 734. 819 644 108 REXBURG NR, ID APR-JUL 1340.0 86 1680.0 108 1000.0 64 1559. 1016 835 86 FALLS RIVER SQUIRREL NR, ID (1) APR-JUL 335.0 87 405.0 105 270.0 70 386. 370 138 81 TETON RIVER ST. ANTHONY NR, ID APR-JUL 320.0 79 435.0 108 200.0 50 403. 464 192 111 BIG LOST RIVER MACKAY RESERVOIR INFLOW, ID APR-JUL 105.0 74 162.0 114 47.0 33 142. 229 62 84 WILLOW CREEK RIRIE RESERVOIR INFLOW APR-JUL 53.0 62 84.0 98 21.0 24 86. 94 26 110 PORTNEUF RIVER TOPAZ, ID APR-SEP 73.0 77 94.0 99 51.0 54 95. 120 52 84 GOOSE CREEK OAKLEY RES INFLOW, ID APR-JUL 22.0 76 36.0 124 8.5 29 29. 0 BIG WOOD RIVER HAILEY, ID (1) APR-JUL 172.0 67 260.0 102 86.0 34 256. 431 71 103 MAGIC RESERVOIR INFLOW, ID APR-JUL 157.0 54 275.0 95 40.0 14 291. 591 67 83 LITTLE WOOD RIVER CAREY NR, ID APR-JUL 54.0 62 84.0 97 24.0 28 87. 163 28 94 MIDDLE SNAKE BASINS Mar-07 Mid Month ________________Forecast______________ __________Runoff___________ Stream and Station Probable % Maximum % Minimum % Average PrevYr CurYR % BRUNEAU RIVER HOT SPRING NR, ID APR-JUL 146.0 70 245.0 118 47.0 23 208. 276 54 73 OWYHEE RIVER OWYHEE RES INFLOW, OR MAR-JUL 330.0 54 540.0 88 119.0 19 613. 1050 243 57 OWYHEE RES OUTFLOW APR-JUL 25.0 12 200.0 92 6.0 3 217. 594 28 16 BOISE RIVER TWIN SPRINGS NR, ID (1) APR-JUL 490.0 77 605.0 95 370.0 58 636. 828 223 104 BOISE NR, ID (1) APR-JUL 1050.0 74 1340.0 95 750.0 53 1414. 2060 515 94 PARMA NR, ID APR-JUL 120.0 20 350.0 59 80.0 13 593. 1102 296 50 S.F. BOISE RIVER ANDERSON RNCH RES IN, ID (1) APR-JUL 395.0 73 500.0 92 290.0 54 542. 816 159 105 MALHEUR RIVER DREWSEY NR, OR MAR-JUL 63.0 57 98.0 89 29.0 26 110. 239 55 70 N.F. MALHEUR RIVER BEULAH RES INFLOW, OR (1) MAR-JUL 53.0 65 70.0 86 36.0 44 81. 155 34 70 PAYETTE RIVER HORSESHOE BEND NR, ID (1) APR-JUL 1290.0 80 1660.0 103 915.0 57 1617. 2214 612 94 EMMETT NR, ID APR-JUL 980.0 79 1380.0 111 575.0 46 1246. 1977 534 71 DEADWOOD RIVER DEADWOOD RES INFLOW, ID (1) APR-JUL 108.0 81 133.0 99 83.0 62 134. 180 33 99 N.F. PAYETTE RIVER CASCADE RES INFLOW, ID (1) APR-JUL 395.0 80 515.0 104 280.0 57 495. 684 197 94 WEISER RIVER WEISER NR, ID (1) APR-JUL 305.0 78 475.0 121 129.0 33 391. 717 207 53 BURNT RIVER HEREFORD NR, OR MAR-JUL 30.0 59 44.0 86 15.5 30 51. 81 19 60 LOWER SNAKE AND CENTRAL OREGON BASINS Mar-07 Mid Month ________________Forecast______________ __________Runoff___________ Stream and Station Probable % Maximum % Minimum % Average PrevYr CurYR % POWDER RIVER SUMPTER NR, OR MAR-JUL 43.0 61 57.0 81 28.0 40 70. 90 IMNAHA RIVER IMNAHA, OR MAR-JUL 215.0 71 295.0 98 140.0 47 301. 394 83 87 SALMON RIVER SALMON, ID (1) APR-JUL 715.0 83 1030.0 120 405.0 47 857. 1078 456 102 WHITEBIRD, ID (1) JAN-JUL 5670.0 83 7060.0 104 4280.0 63 6805. 7274 1836 99 APR-JUL 4780.0 82 6170.0 105 3390.0 58 5851. 6441 1836 99 GRANDE RONDE RIVER LA GRANDE, OR MAR-JUL 161.0 65 220.0 88 100.0 40 249. 238 117 85 APR-JUL 106.0 58 167.0 91 45.0 24 184. 202 117 85 TROY, OR (1) MAR-JUL 1230.0 78 1640.0 104 825.0 52 1578. 1573 798 89 APR-JUL 960.0 75 1370.0 108 550.0 43 1274. 1369 798 89 CLEARWATER RIVER OROFINO, ID (1) APR-JUL 4110.0 88 5380.0 116 2850.0 61 4645. 4316 1748 106 SPALDING, ID (1) JAN-JUL 8730.0 90 10500.0 108 6950.0 72 9683. 9175 3546 107 APR-JUL 6630.0 89 8410.0 113 4850.0 65 7435. 7274 3546 107 APR-SEP 7000.0 89 8780.0 112 5220.0 67 7849. 7550 3546 107 N.F. CLEARWATER RI DWORSHAK RES INFLOW, ID (1) JAN-JUL 3200.0 90 3820.0 108 2580.0 73 3547. 3507 1437 106 APR-JUL 2410.0 91 3030.0 115 1790.0 68 2644. 2676 1437 106 APR-SEP 2560.0 91 3180.0 113 1940.0 69 2803. 2786 1437 106 S.F. WALLA WALLA R MILTON NR, OR APR-JUL 53.0 100 65.0 123 41.0 77 53. 63 78 127 UMATILLA RIVER GIBBON NR, OR APR-JUL 67.0 92 92.0 126 41.0 56 73. 86 109 118 PENDLETON, OR APR-JUL 122.0 82 188.0 126 55.0 37 149. 178 252 111 M.F. JOHN DAY RIVE RITTER, OR (1) MAR-JUL 111.0 69 155.0 97 66.0 41 160. 0 APR-JUL 86.0 70 130.0 106 41.0 33 123. 0 N.F. JOHN DAY RIVE MONUMENT NR, OR APR-JUL 435.0 73 645.0 108 230.0 39 597. 745 425 95 JOHN DAY RIVER SERVICE CREEK, OR (1) MAR-SEP 800.0 69 1150.0 100 455.0 39 1153. 1235 535 75 APR-SEP 575.0 66 920.0 106 225.0 26 865. 1038 535 75 DESCHUTES RIVER BENHAM FALLS, OR APR-SEP 510.0 97 545.0 103 475.0 90 528. 497 495 102 Mar-07 Mid Month ________________Forecast______________ __________Runoff___________ Stream and Station Probable % Maximum % Minimum % Average PrevYr CurYR % CROOKED RIVER PRINEVILLE RES INFLOW, OR MAR-JUL 120.0 65 179.0 97 62.0 34 184. 316 96 59 OCHOCO CREEK OCHOCO RES INFLOW, OR MAR-JUL 21.0 58 36.0 100 6.3 18 36. 59 WESTSIDE AND SOUTHERN OREGON BASINS Mar-07 Mid Month ________________Forecast______________ __________Runoff___________ Stream and Station Probable % Maximum % Minimum % Average PrevYr CurYR % SKAGIT RIVER CONCRETE NR, WA APR-SEP 6910.0 109 8160.0 128 5670.0 89 6365. 5621 5572 118 COWLITZ RIVER MAYFIELD RES INFLOW, WA JAN-JUL 3240.0 101 4110.0 128 2370.0 74 3217. 3453 3130 115 APR-JUL 1820.0 108 2690.0 159 950.0 56 1689. 1642 3130 115 APR-SEP 2070.0 108 2940.0 153 1200.0 62 1922. 1817 3130 115 CASTLE ROCK, WA APR-SEP 2700.0 102 3900.0 148 1500.0 57 2639. 2380 5073 119 JAN-JUL 4710.0 100 5910.0 126 3500.0 74 4709. 5136 5073 119 LEWIS RIVER ARIEL, WA JAN-JUL 2280.0 97 2650.0 113 1910.0 81 2351. 2514 2522 106 MCKENZIE RIVER VIDA NR, OR APR-SEP 1180.0 98 1440.0 120 915.0 76 1201. 1142 2086 114 S. SANTIAM RIVER WATERLOO, OR APR-SEP 555.0 95 805.0 137 310.0 53 587. 540 1930 118 N. SANTIAM RIVER MEHAMA, OR APR-SEP 780.0 94 1020.0 122 545.0 65 834. 754 1974 117 WILLAMETTE RIVER SALEM, OR APR-SEP 4440.0 92 5980.0 124 2900.0 60 4804. 4373 14270 114 CLACKAMAS RIVER ESTACADA, OR APR-SEP 725.0 97 885.0 118 565.0 76 748. 678 1618 122 N. UMPQUA RIVER LEMOLO LAKE INFLOW, OR (1) APR-SEP 139.0 92 176.0 117 102.0 68 151. 156 123 90 JAN-JUL 168.0 93 205.0 113 130.0 72 181. 195 123 90 ROGUE RIVER RAYGOLD, OR APR-SEP 845.0 95 970.0 109 715.0 80 889. 895 1393 102 JAN-JUL 1530.0 97 1660.0 105 1400.0 88 1584. 1970 1393 102 CHEWAUCAN RIVER PAISLEY NR, OR MAR-JUL 58.0 65 94.0 106 22.0 25 89. 16 SILVIES RIVER BURNS NR, OR MAR-JUL 80.0 62 144.0 112 15.9 12 129. 196 35 58 APR-SEP 64.0 65 128.0 129 0.4 0 99. 167 35 58 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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