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Water Supply Forecasts Northwest River Forecast Center Thursday March 13, 2008 at 20:21 GMT Observed precipitation through the 10th 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-08 Mid Month ________________Forecast______________ __________Runoff___________ Stream and Station Probable % Maximum % Minimum % Average PrevYr CurYR % COLUMBIA RIVER MICA RESERVOIR INFLOW, BC JAN-JUL 9900.0 103 11200.0 116 8570.0 89 9619. 9985 2135 105 FEB-SEP 13300.0 103 14600.0 113 12000.0 93 12960. 12300 2135 105 APR-SEP 12900.0 103 14200.0 114 11500.0 92 12500. 11850 2135 105 REVELSTOKE, BC JAN-JUL 14300.0 103 15400.0 111 13100.0 94 13880. 14190 3118 106 ARROW LAKES INFLOW JAN-JUL 20800.0 99 22900.0 109 18800.0 90 20960. 20790 4662 88 FEB-SEP 26400.0 100 28500.0 108 24400.0 92 26460. 24050 4662 88 APR-SEP 25300.0 101 27400.0 109 23300.0 93 25110. 22920 4662 88 BIRCHBANK, BC (1) JAN-JUL 38300.0 98 43600.0 112 33100.0 85 38930. 41180 8345 90 APR-SEP 43600.0 100 48800.0 112 38300.0 88 43500. 42860 8345 90 GRAND COULEE, WA (1) JAN-JUL 61100.0 97 69700.0 111 52600.0 84 62900. 66890 13510 78 APR-SEP 64800.0 101 73300.0 115 56300.0 88 63990. 63870 13510 78 ROCK ISLAND DAM BLO, WA (1) JAN-JUL 67400.0 98 76800.0 111 58000.0 84 68910. 71930 14220 75 APR-SEP 71200.0 102 80600.0 116 61800.0 89 69540. 68910 14220 75 THE DALLES NR, OR (1) JAN-JUL 101000.0 94 114000.0 106 87300.0 81 107300. 114700 29220 74 APR-AUG 93600.0 101 107000.0 115 80000.0 86 93090. 97540 29220 74 APR-SEP 98800.0 100 112000.0 114 85200.0 86 98650. 101700 29220 74 KOOTENAI RIVER LIBBY RES INFLOW, MT (1) JAN-JUL 6080.0 96 7380.0 117 4780.0 76 6306. 6909 1182 76 APR-AUG 6190.0 99 7490.0 120 4890.0 78 6248. 6628 1182 76 APR-SEP 6570.0 99 7870.0 119 5270.0 79 6638. 6922 1182 76 LEONIA, ID (1) APR-JUL 7230.0 103 8810.0 125 5650.0 80 7041. 7768 1578 73 APR-SEP 8340.0 103 9920.0 122 6760.0 83 8125. 8545 1578 73 BONNERS FERRY, ID APR-JUL 7910.0 104 9450.0 124 6360.0 83 7619. 8380 1695 73 KOOTENAY RIVER KOOTENAY LAKE INFLOW, BC JAN-JUL 15600.0 97 18000.0 112 13000.0 81 16010. 17210 2919 75 APR-SEP 16600.0 101 19400.0 118 13700.0 83 16450. 16790 2919 75 DUNCAN RIVER DUNCAN RESERVOIR INFLOW, BC JAN-JUL 1810.0 101 2180.0 121 1430.0 79 1800. 2033 349 92 FEB-SEP 2320.0 101 2690.0 117 1940.0 84 2305. 2361 349 92 APR-SEP 2250.0 101 2630.0 118 1880.0 84 2227. 2291 349 92 CLARK FORK BLACKFOOT RIVER ABV, MT APR-SEP 685.0 97 1020.0 145 355.0 50 704. 504 272 79 MISSOULA ABV, MT APR-SEP 1530.0 96 1990.0 125 1070.0 67 1595. 1344 460 79 MISSOULA BLO, MT APR-SEP 2990.0 101 3690.0 125 2300.0 78 2962. 2770 777 80 ST. REGIS, MT (1) APR-SEP 4030.0 103 5100.0 131 2960.0 76 3907. 3648 1040 79 PLAINS NR, MT (1) APR-SEP 11200.0 101 13400.0 121 8870.0 80 11060. 10840 2182 70 WHITEHORSE RAPIDS, ID (1) APR-SEP 12400.0 100 15100.0 121 9790.0 79 12460. 12060 2429 65 BLACKFOOT RIVER BONNER NR, MT APR-SEP 835.0 94 1120.0 126 550.0 62 892. 840 190 79 BITTERROOT RIVER AT MOUTH, MT APR-SEP 1460.0 107 1750.0 128 1170.0 86 1364. 1319 324 83 Mar-08 Mid Month ________________Forecast______________ __________Runoff___________ Stream and Station Probable % Maximum % Minimum % Average PrevYr CurYR % N.F. FLATHEAD RIVE COLUMBIA FALLS NR, MT APR-SEP 1900.0 105 2250.0 125 1550.0 86 1801. 1780 247 68 M.F. FLATHEAD RIVE WEST GLACIER NR, MT APR-SEP 1760.0 101 2050.0 118 1470.0 84 1740. 1737 241 69 S.F. FLATHEAD RIVE HUNGRY HORSE RES IN, MT (1) JAN-JUL 2090.0 94 2530.0 114 1650.0 74 2224. 2357 313 68 APR-SEP 2060.0 97 2510.0 118 1620.0 76 2124. 2175 313 68 UPPER/MIDDLE COLUMBIA BASINS Mar-08 Mid Month ________________Forecast______________ __________Runoff___________ Stream and Station Probable % Maximum % Minimum % Average PrevYr CurYR % FLATHEAD RIVER COLUMBIA FALLS, MT APR-SEP 5870.0 101 7140.0 123 4600.0 79 5825. 6002 814 66 FLATHEAD LAKE INFLOW, MT (1) APR-SEP 6760.0 101 8140.0 121 5380.0 80 6713. 7002 1175 76 PRIEST RIVER PRIEST RIVER, ID (1) APR-JUL 875.0 107 1100.0 135 655.0 80 814. 997 246 68 PEND OREILLE RIVER PEND OREILLE LAKE IN, ID (1) APR-SEP 13900.0 100 16800.0 121 11000.0 79 13910. 14260 3403 74 APR-JUL 12700.0 100 15600.0 122 9840.0 77 12740. 13520 3403 74 BOX CANYON BLO, WA (1) APR-SEP 14300.0 101 17300.0 123 11300.0 80 14090. 14500 3461 72 KETTLE RIVER LAURIER NR, WA APR-SEP 1940.0 98 2310.0 117 1570.0 80 1972. 2366 150 55 COEUR D'ALENE RIVE ENAVILLE, ID (1) APR-SEP 865.0 111 1060.0 136 670.0 86 778. 871 273 47 APR-JUL 820.0 111 1010.0 137 625.0 85 739. 841 273 47 COEUR D'ALENE LAKE IN, ID APR-JUL 2830.0 111 3460.0 136 2200.0 86 2552. 2456 1094 56 SPOKANE RIVER SPOKANE, WA (1) APR-SEP 3320.0 121 3400.0 124 3240.0 118 2744. 2705 1071 54 ST JOE RIVER CALDER, ID APR-SEP 1340.0 111 1570.0 130 1110.0 92 1205. 1263 257 50 APR-JUL 1260.0 111 1490.0 131 1030.0 91 1136. 1203 257 50 OKANAGAN RIVER TONASKET NR, WA (1) APR-SEP 1380.0 78 1940.0 110 820.0 46 1766. 1470 368 76 SIMILKAMEEN RIVER NIGHTHAWK NR, WA (1) APR-JUL 1060.0 79 1430.0 106 695.0 51 1350. 1079 240 89 APR-SEP 1140.0 79 1510.0 104 780.0 54 1450. 1122 240 89 METHOW RIVER PATEROS NR, WA (1) APR-SEP 855.0 87 1100.0 112 610.0 62 985. 1144 158 88 CHELAN RIVER LAKE CHELAN INFLOW, WA (1) APR-SEP 1140.0 96 1310.0 111 960.0 81 1185. 1345 277 84 WENATCHEE RIVER PESHASTIN, WA APR-SEP 1780.0 109 2310.0 141 1250.0 76 1635. 1669 425 67 YAKIMA AND MAINSTEM SNAKE BASINS Mar-08 Mid Month ________________Forecast______________ __________Runoff___________ Stream and Station Probable % Maximum % Minimum % Average PrevYr CurYR % YAKIMA RIVER KEECHELUS LAKE IN, WA (1) APR-SEP 165.0 124 191.0 144 139.0 105 133. 137 80 66 CLE ELUM, WA APR-SEP 1080.0 120 1180.0 131 975.0 108 903. 906 397 63 PARKER NR, WA APR-SEP 2210.0 115 2430.0 127 1990.0 104 1918. 2346 1017 68 KACHESS RIVER KACHESS LAKE INFLOW, WA (1) APR-SEP 148.0 123 168.0 140 129.0 108 120. 122 71 70 CLE ELUM RIVER CLE ELUM LAKE INFLOW, WA (1) APR-SEP 545.0 122 600.0 134 490.0 109 448. 475 165 69 NACHES RIVER NACHES NR, WA APR-SEP 890.0 106 985.0 118 795.0 95 837. 1086 351 74 BUMPING RIVER BUMPING LAKE INFLOW, WA (1) APR-SEP 145.0 108 162.0 121 127.0 95 134. 154 60 78 TIETON RIVER RIMROCK LAKE INFLOW, WA (1) APR-SEP 255.0 105 290.0 120 225.0 93 242. 244 106 73 AHTANUM CREEKS TAMPICO NR, WA APR-SEP 50.0 109 67.0 146 33.0 72 46. 0 SNAKE RIVER JACKSON LAKE INFLOW, WY (1) APR-JUL 785.0 96 925.0 113 645.0 79 815. 812 205 99 APR-SEP 875.0 97 1010.0 112 730.0 81 904. 861 205 99 PALISADES RES INFLOW, ID (1) APR-JUL 3180.0 95 3720.0 112 2630.0 79 3331. 3267 907 83 APR-SEP 3700.0 95 4240.0 109 3160.0 82 3875. 3672 907 83 HEISE NR, ID APR-JUL 3400.0 95 4000.0 112 2790.0 78 3561. 3618 1023 81 APR-SEP 3970.0 95 4570.0 110 3360.0 81 4159. 4188 1023 81 SHELLEY NR, ID (1) APR-JUL 4480.0 101 5210.0 118 3750.0 85 4428. 4634 1550 83 APR-SEP 5390.0 101 6120.0 115 4650.0 87 5324. 5339 1550 83 BLACKFOOT NR, ID (1) APR-JUL 4510.0 98 5270.0 114 3750.0 81 4604. 0 AMER. FALLS RES IN, ID (1) APR-JUL 3060.0 94 4120.0 127 1990.0 61 3242. 2929 1984 76 MILNER, ID APR-JUL 420.0 34 1270.0 103 177.0 14 1228. 996 183 11 KING HILL, ID (1) APR-JUL 2090.0 69 3050.0 100 1140.0 37 3045. 3030 2653 61 MURPHY NR, ID (1) APR-JUL 2190.0 71 3190.0 103 1200.0 39 3092. 3104 2678 59 WEISER, ID (1) JAN-JUL 6800.0 69 8540.0 87 5050.0 52 9793. 12140 4063 58 APR-JUL 4690.0 81 6440.0 112 2940.0 51 5765. 8160 4063 58 APR-SEP 6120.0 85 7870.0 109 4380.0 61 7192. 9471 4063 58 BROWNLEE RES INFLOW APR-JUL 5280.0 84 7430.0 118 3120.0 49 6313. 8975 4507 60 APR-SEP 6710.0 86 8860.0 114 4550.0 58 7801. 10350 4507 60 HELLS CANYON, ID (1) APR-JUL 5420.0 83 7360.0 113 3470.0 53 6493. 9324 4742 63 APR-SEP 6880.0 86 8820.0 111 4930.0 62 7977. 10740 4742 63 LOWER GRANITE RES IN, WA (1) JAN-JUL 27900.0 93 32800.0 109 23000.0 77 30020. 32200 9386 68 FEB-SEP 29100.0 96 34000.0 112 24200.0 80 30370. 31790 9386 68 APR-JUL 22500.0 104 27400.0 127 17600.0 82 21550. 24440 9386 68 APR-SEP 24900.0 103 29800.0 123 20000.0 83 24140. 26590 9386 68 UPPER SNAKE BASINS Mar-08 Mid Month ________________Forecast______________ __________Runoff___________ Stream and Station Probable % Maximum % Minimum % Average PrevYr CurYR % GREY'S RIVER PALISADES ABV, WY APR-SEP 365.0 93 430.0 109 295.0 75 394. 401 147 160 SALT RIVER ETNA NR, WY APR-JUL 310.0 91 415.0 121 210.0 61 342. 363 143 76 HENRYS FORK ASHTON NR, ID APR-JUL 565.0 99 680.0 119 445.0 78 571. 659 385 76 ST. ANTHONY, ID APR-JUL 725.0 99 945.0 129 510.0 69 734. 819 475 79 REXBURG NR, ID APR-JUL 1500.0 96 1850.0 119 1160.0 74 1559. 1016 651 67 FALLS RIVER SQUIRREL NR, ID (1) APR-JUL 365.0 95 430.0 111 295.0 76 386. 370 109 64 TETON RIVER ST. ANTHONY NR, ID APR-JUL 405.0 100 525.0 130 285.0 71 403. 464 143 83 BIG LOST RIVER MACKAY RESERVOIR INFLOW, ID APR-JUL 134.0 94 192.0 135 77.0 54 142. 229 47 64 WILLOW CREEK RIRIE RESERVOIR INFLOW APR-JUL 76.0 88 108.0 126 45.0 52 86. 94 11 47 PORTNEUF RIVER TOPAZ, ID APR-SEP 86.0 91 107.0 113 65.0 68 95. 120 37 60 GOOSE CREEK OAKLEY RES INFLOW, ID APR-JUL 25.0 86 39.0 134 11.9 41 29. 0 BIG WOOD RIVER HAILEY, ID (1) APR-JUL 255.0 100 340.0 133 167.0 65 256. 431 51 74 MAGIC RESERVOIR INFLOW, ID APR-JUL 285.0 98 400.0 137 166.0 57 291. 591 30 37 LITTLE WOOD RIVER CAREY NR, ID APR-JUL 89.0 102 119.0 137 59.0 68 87. 163 19 64 MIDDLE SNAKE BASINS Mar-08 Mid Month ________________Forecast______________ __________Runoff___________ Stream and Station Probable % Maximum % Minimum % Average PrevYr CurYR % BRUNEAU RIVER HOT SPRING NR, ID APR-JUL 193.0 93 290.0 139 94.0 45 208. 276 36 49 OWYHEE RIVER OWYHEE RES INFLOW, OR MAR-JUL 520.0 85 730.0 119 310.0 51 613. 1050 184 43 OWYHEE RES OUTFLOW APR-JUL 33.0 15 190.0 88 15.0 7 217. 594 15 9 BOISE RIVER TWIN SPRINGS NR, ID (1) APR-JUL 630.0 99 750.0 118 515.0 81 636. 828 179 84 BOISE NR, ID (1) APR-JUL 1380.0 98 1670.0 118 1080.0 76 1414. 2060 374 68 PARMA NR, ID APR-JUL 285.0 48 545.0 92 109.0 18 593. 1102 278 47 S.F. BOISE RIVER ANDERSON RNCH RES IN, ID (1) APR-JUL 530.0 98 635.0 117 425.0 78 542. 816 111 74 MALHEUR RIVER DREWSEY NR, OR MAR-JUL 114.0 104 149.0 135 79.0 72 110. 239 55 70 N.F. MALHEUR RIVER BEULAH RES INFLOW, OR (1) MAR-JUL 84.0 104 100.0 123 67.0 83 81. 155 40 82 PAYETTE RIVER HORSESHOE BEND NR, ID (1) APR-JUL 1690.0 105 2060.0 127 1320.0 82 1617. 2214 529 81 EMMETT NR, ID APR-JUL 1500.0 120 1900.0 152 1100.0 88 1246. 1977 496 66 DEADWOOD RIVER DEADWOOD RES INFLOW, ID (1) APR-JUL 140.0 104 165.0 123 115.0 86 134. 180 31 93 N.F. PAYETTE RIVER CASCADE RES INFLOW, ID (1) APR-JUL 530.0 107 645.0 130 410.0 83 495. 684 190 91 WEISER RIVER WEISER NR, ID (1) APR-JUL 455.0 116 625.0 160 280.0 72 391. 717 350 90 BURNT RIVER HEREFORD NR, OR MAR-JUL 54.0 106 69.0 135 40.0 78 51. 81 LOWER SNAKE AND CENTRAL OREGON BASINS Mar-08 Mid Month ________________Forecast______________ __________Runoff___________ Stream and Station Probable % Maximum % Minimum % Average PrevYr CurYR % POWDER RIVER SUMPTER NR, OR MAR-JUL 73.0 104 88.0 126 59.0 84 70. 90 IMNAHA RIVER IMNAHA, OR MAR-JUL 335.0 111 415.0 138 260.0 86 301. 394 64 67 SALMON RIVER SALMON, ID (1) APR-JUL 845.0 99 1160.0 135 535.0 62 857. 1078 391 87 WHITEBIRD, ID (1) JAN-JUL 6830.0 100 8220.0 121 5440.0 80 6805. 7274 1692 91 APR-JUL 6030.0 103 7420.0 127 4640.0 79 5851. 6441 1692 91 GRANDE RONDE RIVER LA GRANDE, OR MAR-JUL 250.0 100 315.0 127 191.0 77 249. 238 86 63 APR-JUL 200.0 109 260.0 141 140.0 76 184. 202 86 63 TROY, OR (1) MAR-JUL 1760.0 112 2170.0 138 1350.0 86 1578. 1573 535 60 APR-JUL 1560.0 122 1960.0 154 1150.0 90 1274. 1369 535 60 CLEARWATER RIVER OROFINO, ID (1) APR-JUL 5160.0 111 6430.0 138 3890.0 84 4645. 4316 1126 68 SPALDING, ID (1) JAN-JUL 9880.0 102 11700.0 121 8100.0 84 9683. 9175 2169 65 APR-JUL 8490.0 114 10300.0 139 6710.0 90 7435. 7274 2169 65 APR-SEP 8910.0 114 10700.0 136 7130.0 91 7849. 7550 2169 65 N.F. CLEARWATER RI DWORSHAK RES INFLOW, ID (1) JAN-JUL 3420.0 96 4040.0 114 2800.0 79 3547. 3507 789 58 APR-JUL 2940.0 111 3560.0 135 2320.0 88 2644. 2676 789 58 APR-SEP 3110.0 111 3730.0 133 2490.0 89 2803. 2786 789 58 S.F. WALLA WALLA R MILTON NR, OR APR-JUL 58.0 109 70.0 132 46.0 87 53. 63 50 81 UMATILLA RIVER GIBBON NR, OR APR-JUL 82.0 112 108.0 148 56.0 77 73. 86 69 75 PENDLETON, OR APR-JUL 169.0 113 235.0 158 103.0 69 149. 178 153 68 M.F. JOHN DAY RIVE RITTER, OR (1) MAR-JUL 182.0 114 225.0 141 138.0 86 160. 0 APR-JUL 140.0 114 185.0 150 96.0 78 123. 0 N.F. JOHN DAY RIVE MONUMENT NR, OR APR-JUL 670.0 112 875.0 147 460.0 77 597. 745 374 83 JOHN DAY RIVER SERVICE CREEK, OR (1) MAR-SEP 1300.0 113 1650.0 143 950.0 82 1153. 1235 565 80 APR-SEP 955.0 110 1300.0 150 605.0 70 865. 1038 565 80 DESCHUTES RIVER BENHAM FALLS, OR APR-SEP 520.0 98 560.0 106 485.0 92 528. 497 496 102 Mar-08 Mid Month ________________Forecast______________ __________Runoff___________ Stream and Station Probable % Maximum % Minimum % Average PrevYr CurYR % CROOKED RIVER PRINEVILLE RES INFLOW, OR MAR-JUL 189.0 103 250.0 136 131.0 71 184. 316 64 39 OCHOCO CREEK OCHOCO RES INFLOW, OR MAR-JUL 37.0 103 52.0 144 22.0 61 36. 59 WESTSIDE AND SOUTHERN OREGON BASINS Mar-08 Mid Month ________________Forecast______________ __________Runoff___________ Stream and Station Probable % Maximum % Minimum % Average PrevYr CurYR % SKAGIT RIVER CONCRETE NR, WA APR-SEP 6740.0 106 7990.0 126 5490.0 86 6365. 5621 4146 88 COWLITZ RIVER MAYFIELD RES INFLOW, WA JAN-JUL 3140.0 98 4010.0 125 2270.0 71 3217. 3453 2115 78 APR-JUL 1940.0 115 2810.0 166 1070.0 63 1689. 1642 2115 78 APR-SEP 2210.0 115 3080.0 160 1340.0 70 1922. 1817 2115 78 CASTLE ROCK, WA APR-SEP 2920.0 111 4130.0 156 1720.0 65 2639. 2380 3611 85 JAN-JUL 4610.0 98 5820.0 124 3410.0 72 4709. 5136 3611 85 LEWIS RIVER ARIEL, WA JAN-JUL 2270.0 97 2640.0 112 1900.0 81 2351. 2514 1821 77 MCKENZIE RIVER VIDA NR, OR APR-SEP 1290.0 107 1550.0 129 1030.0 86 1201. 1142 1774 97 S. SANTIAM RIVER WATERLOO, OR APR-SEP 680.0 116 930.0 158 430.0 73 587. 540 1555 95 N. SANTIAM RIVER MEHAMA, OR APR-SEP 950.0 114 1190.0 143 710.0 85 834. 754 1600 95 WILLAMETTE RIVER SALEM, OR APR-SEP 5350.0 111 6890.0 143 3810.0 79 4804. 4373 11950 95 CLACKAMAS RIVER ESTACADA, OR APR-SEP 915.0 122 1070.0 143 755.0 101 748. 678 1172 88 N. UMPQUA RIVER LEMOLO LAKE INFLOW, OR (1) APR-SEP 158.0 105 196.0 130 121.0 80 151. 156 128 93 JAN-JUL 180.0 99 215.0 119 143.0 79 181. 195 128 93 ROGUE RIVER RAYGOLD, OR APR-SEP 940.0 106 1070.0 120 810.0 91 889. 895 1197 88 JAN-JUL 1560.0 98 1690.0 107 1430.0 90 1584. 1970 1197 88 CHEWAUCAN RIVER PAISLEY NR, OR MAR-JUL 72.0 81 108.0 121 36.0 40 89. 16 SILVIES RIVER BURNS NR, OR MAR-JUL 144.0 112 210.0 163 80.0 62 129. 196 APR-SEP 123.0 124 187.0 189 59.0 60 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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