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Water Supply Forecasts Northwest River Forecast Center Thursday February 28, 2008 at 21:18 GMT Observed precipitation through the 25th Future precip 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-08 EarlyBird ________________Forecast______________ __________Runoff___________ Stream and Station Probable % Maximum % Minimum % Average PrevYr CurYR % COLUMBIA RIVER MICA RESERVOIR INFLOW, BC JAN-JUL 10100.0 105 11500.0 120 8700.0 90 9619. 9985 1905 106 FEB-SEP 13600.0 105 15000.0 116 12200.0 94 12960. 12300 1905 106 APR-SEP 13100.0 105 14500.0 116 11700.0 94 12500. 11850 1905 106 REVELSTOKE, BC JAN-JUL 14600.0 105 15900.0 115 13400.0 97 13880. 14190 2784 108 ARROW LAKES INFLOW JAN-JUL 21400.0 102 23800.0 114 19000.0 91 20960. 20790 3985 87 FEB-SEP 27200.0 103 29600.0 112 24800.0 94 26460. 24050 3985 87 APR-SEP 26000.0 104 28400.0 113 23600.0 94 25110. 22920 3985 87 BIRCHBANK, BC (1) JAN-JUL 39000.0 100 45300.0 116 32700.0 84 38930. 41180 7147 92 APR-SEP 44000.0 101 50300.0 116 37700.0 87 43500. 42860 7147 92 GRAND COULEE, WA (1) JAN-JUL 61700.0 98 71900.0 114 51400.0 82 62900. 66890 10890 80 APR-SEP 64300.0 100 74500.0 116 54000.0 84 63990. 63870 10890 80 ROCK ISLAND DAM BLO, WA (1) JAN-JUL 68300.0 99 80100.0 116 56400.0 82 68910. 71930 11410 78 APR-SEP 70900.0 102 82700.0 119 59000.0 85 69540. 68910 11410 78 THE DALLES NR, OR (1) JAN-JUL 103000.0 96 121000.0 113 85900.0 80 107300. 114700 22070 74 APR-AUG 94300.0 101 112000.0 120 76700.0 82 93090. 97540 22070 74 APR-SEP 99900.0 101 118000.0 120 82300.0 83 98650. 101700 22070 74 KOOTENAI RIVER LIBBY RES INFLOW, MT (1) JAN-JUL 5960.0 95 7360.0 117 4560.0 72 6306. 6909 1002 76 APR-AUG 6000.0 96 7400.0 118 4600.0 74 6248. 6628 1002 76 APR-SEP 6370.0 96 7770.0 117 4970.0 75 6638. 6922 1002 76 LEONIA, ID (1) APR-JUL 6900.0 98 8620.0 122 5170.0 73 7041. 7768 1296 74 APR-SEP 7960.0 98 9690.0 119 6240.0 77 8125. 8545 1296 74 BONNERS FERRY, ID APR-JUL 7550.0 99 9130.0 120 5950.0 78 7619. 8380 1392 75 KOOTENAY RIVER KOOTENAY LAKE INFLOW, BC JAN-JUL 15600.0 97 18300.0 114 12900.0 81 16010. 17210 2456 78 APR-SEP 16300.0 99 19300.0 117 13300.0 81 16450. 16790 2456 78 DUNCAN RIVER DUNCAN RESERVOIR INFLOW, BC JAN-JUL 1840.0 102 2230.0 124 1440.0 80 1800. 2033 314 94 FEB-SEP 2360.0 102 2750.0 119 1960.0 85 2305. 2361 314 94 APR-SEP 2280.0 102 2680.0 120 1890.0 85 2227. 2291 314 94 CLARK FORK BLACKFOOT RIVER ABV, MT APR-SEP 640.0 91 1020.0 145 260.0 37 704. 504 216 79 MISSOULA ABV, MT APR-SEP 1450.0 91 1980.0 124 930.0 58 1595. 1344 363 79 MISSOULA BLO, MT APR-SEP 2860.0 97 3650.0 123 2070.0 70 2962. 2770 617 80 ST. REGIS, MT (1) APR-SEP 3830.0 98 5230.0 134 2430.0 62 3907. 3648 831 80 PLAINS NR, MT (1) APR-SEP 10700.0 97 13400.0 121 7920.0 72 11060. 10840 1755 71 WHITEHORSE RAPIDS, ID (1) APR-SEP 11900.0 96 15000.0 120 8700.0 70 12460. 12060 1834 63 BLACKFOOT RIVER BONNER NR, MT APR-SEP 810.0 91 1130.0 127 480.0 54 892. 840 149 80 BITTERROOT RIVER AT MOUTH, MT APR-SEP 1400.0 103 1710.0 125 1100.0 81 1364. 1319 259 84 Mar-08 EarlyBird ________________Forecast______________ __________Runoff___________ Stream and Station Probable % Maximum % Minimum % Average PrevYr CurYR % N.F. FLATHEAD RIVE COLUMBIA FALLS NR, MT APR-SEP 1750.0 97 2090.0 116 1410.0 78 1801. 1780 208 70 M.F. FLATHEAD RIVE WEST GLACIER NR, MT APR-SEP 1700.0 98 2020.0 116 1370.0 79 1740. 1737 205 72 S.F. FLATHEAD RIVE HUNGRY HORSE RES IN, MT (1) JAN-JUL 2130.0 96 2650.0 119 1610.0 72 2224. 2357 257 71 APR-SEP 2070.0 97 2590.0 122 1550.0 73 2124. 2175 257 71 UPPER/MIDDLE COLUMBIA BASINS Mar-08 EarlyBird ________________Forecast______________ __________Runoff___________ Stream and Station Probable % Maximum % Minimum % Average PrevYr CurYR % FLATHEAD RIVER COLUMBIA FALLS, MT APR-SEP 5620.0 96 6890.0 118 4340.0 75 5825. 6002 677 68 FLATHEAD LAKE INFLOW, MT (1) APR-SEP 6480.0 97 8070.0 120 4900.0 73 6713. 7002 959 78 PRIEST RIVER PRIEST RIVER, ID (1) APR-JUL 855.0 105 1080.0 133 625.0 77 814. 997 189 74 PEND OREILLE RIVER PEND OREILLE LAKE IN, ID (1) APR-SEP 13400.0 96 16800.0 121 10100.0 73 13910. 14260 2583 74 APR-JUL 12300.0 97 15600.0 122 8900.0 70 12740. 13520 2583 74 BOX CANYON BLO, WA (1) APR-SEP 13700.0 97 16900.0 120 10500.0 75 14090. 14500 2614 72 KETTLE RIVER LAURIER NR, WA APR-SEP 1850.0 94 2250.0 114 1450.0 74 1972. 2366 121 64 COEUR D'ALENE RIVE ENAVILLE, ID (1) APR-SEP 860.0 111 1090.0 140 625.0 80 778. 871 167 43 APR-JUL 815.0 110 1050.0 142 580.0 78 739. 841 167 43 COEUR D'ALENE LAKE IN, ID APR-JUL 2790.0 109 3540.0 139 2040.0 80 2552. 2456 669 51 SPOKANE RIVER SPOKANE, WA (1) APR-SEP 3090.0 113 3210.0 117 2980.0 109 2744. 2705 710 52 ST JOE RIVER CALDER, ID APR-SEP 1310.0 109 1590.0 132 1030.0 85 1205. 1263 187 52 APR-JUL 1230.0 108 1510.0 133 950.0 84 1136. 1203 187 52 OKANAGAN RIVER TONASKET NR, WA (1) APR-SEP 1450.0 82 2060.0 117 845.0 48 1766. 1470 321 84 SIMILKAMEEN RIVER NIGHTHAWK NR, WA (1) APR-JUL 1150.0 85 1550.0 115 755.0 56 1350. 1079 205 93 APR-SEP 1240.0 86 1640.0 113 840.0 58 1450. 1122 205 93 METHOW RIVER PATEROS NR, WA (1) APR-SEP 925.0 94 1250.0 127 595.0 60 985. 1144 128 91 CHELAN RIVER LAKE CHELAN INFLOW, WA (1) APR-SEP 1190.0 100 1400.0 118 975.0 82 1185. 1345 220 86 WENATCHEE RIVER PESHASTIN, WA APR-SEP 1800.0 110 2350.0 144 1260.0 77 1635. 1669 343 68 YAKIMA AND MAINSTEM SNAKE BASINS Mar-08 EarlyBird ________________Forecast______________ __________Runoff___________ Stream and Station Probable % Maximum % Minimum % Average PrevYr CurYR % YAKIMA RIVER KEECHELUS LAKE IN, WA (1) APR-SEP 159.0 120 190.0 143 128.0 96 133. 137 65 64 CLE ELUM, WA APR-SEP 1060.0 117 1200.0 133 930.0 103 903. 906 303 59 PARKER NR, WA APR-SEP 2210.0 115 2560.0 133 1870.0 97 1918. 2346 752 65 KACHESS RIVER KACHESS LAKE INFLOW, WA (1) APR-SEP 144.0 120 170.0 142 118.0 98 120. 122 55 66 CLE ELUM RIVER CLE ELUM LAKE INFLOW, WA (1) APR-SEP 525.0 117 590.0 132 460.0 103 448. 475 131 68 NACHES RIVER NACHES NR, WA APR-SEP 920.0 110 1080.0 129 765.0 91 837. 1086 270 74 BUMPING RIVER BUMPING LAKE INFLOW, WA (1) APR-SEP 149.0 111 179.0 134 119.0 89 134. 154 52 83 TIETON RIVER RIMROCK LAKE INFLOW, WA (1) APR-SEP 260.0 107 305.0 126 215.0 89 242. 244 88 75 AHTANUM CREEKS TAMPICO NR, WA APR-SEP 48.0 104 66.0 143 30.0 65 46. 0 SNAKE RIVER JACKSON LAKE INFLOW, WY (1) APR-JUL 805.0 99 985.0 121 630.0 77 815. 812 174 100 APR-SEP 895.0 99 1070.0 118 715.0 79 904. 861 174 100 PALISADES RES INFLOW, ID (1) APR-JUL 3270.0 98 3980.0 119 2550.0 77 3331. 3267 778 85 APR-SEP 3810.0 98 4520.0 117 3100.0 80 3875. 3672 778 85 HEISE NR, ID APR-JUL 3460.0 97 4260.0 120 2670.0 75 3561. 3618 878 83 APR-SEP 4040.0 97 4840.0 116 3240.0 78 4159. 4188 878 83 SHELLEY NR, ID (1) APR-JUL 4580.0 103 5440.0 123 3720.0 84 4428. 4634 1332 84 APR-SEP 5510.0 103 6370.0 120 4650.0 87 5324. 5339 1332 84 BLACKFOOT NR, ID (1) APR-JUL 4610.0 100 5490.0 119 3730.0 81 4604. 0 AMER. FALLS RES IN, ID (1) APR-JUL 3060.0 94 4250.0 131 1870.0 58 3242. 2929 1652 77 MILNER, ID APR-JUL 420.0 34 1380.0 112 165.0 13 1228. 996 142 11 KING HILL, ID (1) APR-JUL 2090.0 69 3140.0 103 1040.0 34 3045. 3030 2175 61 MURPHY NR, ID (1) APR-JUL 2190.0 71 3310.0 107 1060.0 34 3092. 3104 2189 59 WEISER, ID (1) JAN-JUL 7420.0 76 9820.0 100 5020.0 51 9793. 12140 3188 60 APR-JUL 4810.0 83 7210.0 125 2410.0 42 5765. 8160 3188 60 APR-SEP 6250.0 87 8650.0 120 3840.0 53 7192. 9471 3188 60 BROWNLEE RES INFLOW APR-JUL 5390.0 85 7690.0 122 3090.0 49 6313. 8975 3401 60 APR-SEP 6830.0 88 9130.0 117 4530.0 58 7801. 10350 3401 60 HELLS CANYON, ID (1) APR-JUL 5540.0 85 7980.0 123 3090.0 48 6493. 9324 3486 62 APR-SEP 7010.0 88 9450.0 118 4560.0 57 7977. 10740 3486 62 LOWER GRANITE RES IN, WA (1) JAN-JUL 29000.0 97 36300.0 121 21700.0 72 30020. 32200 6490 65 FEB-SEP 30300.0 100 37600.0 124 23000.0 76 30370. 31790 6490 65 APR-JUL 22900.0 106 30100.0 140 15600.0 72 21550. 24440 6490 65 APR-SEP 25400.0 105 32600.0 135 18100.0 75 24140. 26590 6490 65 UPPER SNAKE BASINS Mar-08 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. 401 62 81 SALT RIVER ETNA NR, WY APR-JUL 305.0 89 445.0 130 166.0 49 342. 363 122 77 HENRYS FORK ASHTON NR, ID APR-JUL 565.0 99 695.0 122 440.0 77 571. 659 343 81 ST. ANTHONY, ID APR-JUL 740.0 101 990.0 135 490.0 67 734. 819 394 79 REXBURG NR, ID APR-JUL 1530.0 98 1920.0 123 1130.0 72 1559. 1016 548 67 FALLS RIVER SQUIRREL NR, ID (1) APR-JUL 385.0 100 460.0 119 305.0 79 386. 370 90 62 TETON RIVER ST. ANTHONY NR, ID APR-JUL 405.0 100 545.0 135 260.0 65 403. 464 119 84 BIG LOST RIVER MACKAY RESERVOIR INFLOW, ID APR-JUL 144.0 101 220.0 155 67.0 47 142. 229 42 67 WILLOW CREEK RIRIE RESERVOIR INFLOW APR-JUL 79.0 92 115.0 134 43.0 50 86. 94 8 47 PORTNEUF RIVER TOPAZ, ID APR-SEP 83.0 87 109.0 115 58.0 61 95. 120 31 65 GOOSE CREEK OAKLEY RES INFLOW, ID APR-JUL 25.0 86 41.0 141 8.4 29 29. 0 BIG WOOD RIVER HAILEY, ID (1) APR-JUL 260.0 102 370.0 145 154.0 60 256. 431 42 75 MAGIC RESERVOIR INFLOW, ID APR-JUL 290.0 100 455.0 156 125.0 43 291. 591 24 56 LITTLE WOOD RIVER CAREY NR, ID APR-JUL 91.0 105 137.0 157 45.0 52 87. 163 16 80 MIDDLE SNAKE BASINS Mar-08 EarlyBird ________________Forecast______________ __________Runoff___________ Stream and Station Probable % Maximum % Minimum % Average PrevYr CurYR % BRUNEAU RIVER HOT SPRING NR, ID APR-JUL 184.0 88 295.0 142 75.0 36 208. 276 24 54 OWYHEE RIVER OWYHEE RES INFLOW, OR MAR-JUL 565.0 92 765.0 125 365.0 60 613. 1050 102 48 OWYHEE RES OUTFLOW APR-JUL 38.0 18 225.0 104 17.8 8 217. 594 13 21 BOISE RIVER TWIN SPRINGS NR, ID (1) APR-JUL 630.0 99 765.0 120 490.0 77 636. 828 141 95 BOISE NR, ID (1) APR-JUL 1380.0 98 1790.0 127 960.0 68 1414. 2060 280 78 PARMA NR, ID APR-JUL 285.0 48 655.0 110 93.0 16 593. 1102 233 57 S.F. BOISE RIVER ANDERSON RNCH RES IN, ID (1) APR-JUL 535.0 99 645.0 119 425.0 78 542. 816 88 85 MALHEUR RIVER DREWSEY NR, OR MAR-JUL 121.0 110 173.0 157 68.0 62 110. 239 19 45 N.F. MALHEUR RIVER BEULAH RES INFLOW, OR (1) MAR-JUL 89.0 110 114.0 141 64.0 79 81. 155 18 64 PAYETTE RIVER HORSESHOE BEND NR, ID (1) APR-JUL 1770.0 109 2260.0 140 1280.0 79 1617. 2214 432 92 EMMETT NR, ID APR-JUL 1590.0 128 2120.0 170 1060.0 85 1246. 1977 360 68 DEADWOOD RIVER DEADWOOD RES INFLOW, ID (1) APR-JUL 151.0 113 183.0 137 119.0 89 134. 180 27 102 N.F. PAYETTE RIVER CASCADE RES INFLOW, ID (1) APR-JUL 555.0 112 690.0 139 420.0 85 495. 684 164 103 WEISER RIVER WEISER NR, ID (1) APR-JUL 450.0 115 660.0 169 240.0 61 391. 717 158 71 BURNT RIVER HEREFORD NR, OR MAR-JUL 56.0 110 76.0 149 35.0 69 51. 81 LOWER SNAKE AND CENTRAL OREGON BASINS Mar-08 EarlyBird ________________Forecast______________ __________Runoff___________ Stream and Station Probable % Maximum % Minimum % Average PrevYr CurYR % POWDER RIVER SUMPTER NR, OR MAR-JUL 74.0 106 95.0 136 54.0 77 70. 90 IMNAHA RIVER IMNAHA, OR MAR-JUL 345.0 115 430.0 143 260.0 86 301. 394 45 70 SALMON RIVER SALMON, ID (1) APR-JUL 860.0 100 1200.0 140 520.0 61 857. 1078 330 88 WHITEBIRD, ID (1) JAN-JUL 7000.0 103 8760.0 129 5240.0 77 6805. 7274 1376 94 APR-JUL 6120.0 105 7880.0 135 4360.0 75 5851. 6441 1376 94 GRANDE RONDE RIVER LA GRANDE, OR MAR-JUL 265.0 106 340.0 137 186.0 75 249. 238 36 50 APR-JUL 196.0 107 275.0 149 119.0 65 184. 202 36 50 TROY, OR (1) MAR-JUL 1840.0 117 2280.0 144 1400.0 89 1578. 1573 326 55 APR-JUL 1530.0 120 1960.0 154 1090.0 86 1274. 1369 326 55 CLEARWATER RIVER OROFINO, ID (1) APR-JUL 5110.0 110 6670.0 144 3550.0 76 4645. 4316 726 64 SPALDING, ID (1) JAN-JUL 9970.0 103 12400.0 128 7570.0 78 9683. 9175 1297 57 APR-JUL 8370.0 113 10800.0 145 5970.0 80 7435. 7274 1297 57 APR-SEP 8800.0 112 11200.0 143 6390.0 81 7849. 7550 1297 57 N.F. CLEARWATER RI DWORSHAK RES INFLOW, ID (1) JAN-JUL 3630.0 102 4550.0 128 2700.0 76 3547. 3507 505 54 APR-JUL 2960.0 112 3890.0 147 2030.0 77 2644. 2676 505 54 APR-SEP 3170.0 113 4100.0 146 2250.0 80 2803. 2786 505 54 S.F. WALLA WALLA R MILTON NR, OR APR-JUL 58.0 109 74.0 140 41.0 77 53. 63 33 68 UMATILLA RIVER GIBBON NR, OR APR-JUL 83.0 114 113.0 155 53.0 73 73. 86 45 69 PENDLETON, OR APR-JUL 171.0 115 240.0 161 100.0 67 149. 178 99 64 M.F. JOHN DAY RIVE RITTER, OR (1) MAR-JUL 189.0 118 245.0 153 134.0 84 160. 0 APR-JUL 146.0 119 200.0 163 91.0 74 123. 0 N.F. JOHN DAY RIVE MONUMENT NR, OR APR-JUL 690.0 116 950.0 159 430.0 72 597. 745 162 63 JOHN DAY RIVER SERVICE CREEK, OR (1) MAR-SEP 1330.0 115 1770.0 154 895.0 78 1153. 1235 220 52 APR-SEP 1000.0 116 1440.0 166 560.0 65 865. 1038 220 52 DESCHUTES RIVER BENHAM FALLS, OR APR-SEP 540.0 102 595.0 113 485.0 92 528. 497 395 97 Mar-08 EarlyBird ________________Forecast______________ __________Runoff___________ Stream and Station Probable % Maximum % Minimum % Average PrevYr CurYR % CROOKED RIVER PRINEVILLE RES INFLOW, OR MAR-JUL 205.0 111 280.0 152 127.0 69 184. 316 32 37 OCHOCO CREEK OCHOCO RES INFLOW, OR MAR-JUL 42.0 117 58.0 161 26.0 72 36. 59 WESTSIDE AND SOUTHERN OREGON BASINS Mar-08 EarlyBird ________________Forecast______________ __________Runoff___________ Stream and Station Probable % Maximum % Minimum % Average PrevYr CurYR % SKAGIT RIVER CONCRETE NR, WA APR-SEP 6730.0 106 8170.0 128 5280.0 83 6365. 5621 3482 87 COWLITZ RIVER MAYFIELD RES INFLOW, WA JAN-JUL 3310.0 103 4270.0 133 2350.0 73 3217. 3453 1701 75 APR-JUL 2050.0 121 3010.0 178 1090.0 65 1689. 1642 1701 75 APR-SEP 2330.0 121 3290.0 171 1370.0 71 1922. 1817 1701 75 CASTLE ROCK, WA APR-SEP 3080.0 117 4430.0 168 1720.0 65 2639. 2380 2966 84 JAN-JUL 4860.0 103 6210.0 132 3500.0 74 4709. 5136 2966 84 LEWIS RIVER ARIEL, WA JAN-JUL 2340.0 100 2720.0 116 1970.0 84 2351. 2514 1444 74 MCKENZIE RIVER VIDA NR, OR APR-SEP 1290.0 107 1580.0 132 1000.0 83 1201. 1142 1395 93 S. SANTIAM RIVER WATERLOO, OR APR-SEP 680.0 116 950.0 162 410.0 70 587. 540 1231 90 N. SANTIAM RIVER MEHAMA, OR APR-SEP 935.0 112 1200.0 144 670.0 80 834. 754 1299 93 WILLAMETTE RIVER SALEM, OR APR-SEP 5330.0 111 6990.0 146 3670.0 76 4804. 4373 9641 94 CLACKAMAS RIVER ESTACADA, OR APR-SEP 895.0 120 1100.0 147 695.0 93 748. 678 929 85 N. UMPQUA RIVER LEMOLO LAKE INFLOW, OR (1) APR-SEP 161.0 107 198.0 131 123.0 81 151. 156 90 80 JAN-JUL 176.0 97 215.0 119 139.0 77 181. 195 90 80 ROGUE RIVER RAYGOLD, OR APR-SEP 955.0 107 1180.0 133 725.0 82 889. 895 916 85 JAN-JUL 1610.0 102 1840.0 116 1380.0 87 1584. 1970 916 85 CHEWAUCAN RIVER PAISLEY NR, OR MAR-JUL 81.0 91 117.0 131 46.0 52 89. 16 SILVIES RIVER BURNS NR, OR MAR-JUL 134.0 104 215.0 167 55.0 43 129. 196 APR-SEP 103.0 104 182.0 184 23.0 23 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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