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Water Supply Forecasts Northwest River Forecast Center Friday June 20, 2008 at 20:21 GMT Observed precipitation through the 16th Future precip assumed to be normal No snow included Observed runoff through May note: current month runoff based on OBSERVED + ESP to the end of JUN UPPER COLUMBIA BASINS Jun-08 Mid Month ________________Forecast______________ __________Runoff___________ Stream and Station Probable % Maximum % Minimum % Average PrevYr CurYR % COLUMBIA RIVER MICA RESERVOIR INFLOW, BC JAN-JUL 9680.0 101 11000.0 114 8410.0 87 9619. 9985 7045 93 FEB-SEP 13000.0 100 14300.0 110 11700.0 90 12960. 12300 7045 93 APR-SEP 12600.0 101 13800.0 110 11300.0 90 12500. 11850 7045 93 REVELSTOKE, BC JAN-JUL 13800.0 99 14800.0 107 12800.0 92 13880. 14190 10710 95 ARROW LAKES INFLOW JAN-JUL 20200.0 96 22000.0 105 18400.0 88 20960. 20790 16040 89 FEB-SEP 25600.0 97 27500.0 104 23800.0 90 26460. 24050 16040 89 APR-SEP 24700.0 98 26500.0 106 22900.0 91 25110. 22920 16040 89 BIRCHBANK, BC (1) JAN-JUL 36900.0 95 41000.0 105 32800.0 84 38930. 41180 31610 91 APR-SEP 42000.0 97 46100.0 106 37900.0 87 43500. 42860 31610 91 GRAND COULEE, WA (1) JAN-JUL 60900.0 97 66700.0 106 55100.0 88 62900. 66890 54230 91 APR-SEP 64800.0 101 70600.0 110 59000.0 92 63990. 63870 54230 91 ROCK ISLAND DAM BLO, WA (1) JAN-JUL 67200.0 98 74100.0 108 60300.0 88 68910. 71930 58570 90 APR-SEP 71300.0 103 78200.0 112 64400.0 93 69540. 68910 58570 90 THE DALLES NR, OR (1) JAN-JUL 101000.0 94 109000.0 102 92600.0 86 107300. 114700 95950 89 APR-AUG 94700.0 102 103000.0 111 86500.0 93 93090. 97540 95950 89 APR-SEP 100000.0 101 109000.0 110 92100.0 93 98650. 101700 95950 89 KOOTENAI RIVER LIBBY RES INFLOW, MT (1) JAN-JUL 5860.0 93 6910.0 110 4810.0 76 6306. 6909 5051 85 APR-AUG 5960.0 95 7010.0 112 4910.0 79 6248. 6628 5051 85 APR-SEP 6320.0 95 7370.0 111 5270.0 79 6638. 6922 5051 85 LEONIA, ID (1) APR-JUL 6860.0 97 8160.0 116 5560.0 79 7041. 7768 6757 86 APR-SEP 7910.0 97 9210.0 113 6610.0 81 8125. 8545 6757 86 BONNERS FERRY, ID APR-JUL 7510.0 99 8780.0 115 6230.0 82 7619. 8380 7380 87 KOOTENAY RIVER KOOTENAY LAKE INFLOW, BC JAN-JUL 14800.0 92 16500.0 103 13100.0 82 16010. 17210 13040 86 APR-SEP 15700.0 95 17700.0 108 13800.0 84 16450. 16790 13040 86 DUNCAN RIVER DUNCAN RESERVOIR INFLOW, BC JAN-JUL 1710.0 95 2060.0 114 1360.0 76 1800. 2033 1358 92 FEB-SEP 2190.0 95 2540.0 110 1840.0 80 2305. 2361 1358 92 APR-SEP 2130.0 96 2480.0 111 1780.0 80 2227. 2291 1358 92 CLARK FORK BLACKFOOT RIVER ABV, MT APR-SEP 855.0 121 1080.0 153 635.0 90 704. 504 895 105 MISSOULA ABV, MT APR-SEP 1760.0 110 2010.0 126 1510.0 95 1595. 1344 1752 98 MISSOULA BLO, MT APR-SEP 3270.0 110 3640.0 123 2900.0 98 2962. 2770 3210 99 ST. REGIS, MT (1) APR-SEP 4310.0 110 4950.0 127 3670.0 94 3907. 3648 4268 98 PLAINS NR, MT (1) APR-SEP 11800.0 107 13200.0 119 10400.0 94 11060. 10840 10960 94 WHITEHORSE RAPIDS, ID (1) APR-SEP 13300.0 107 15000.0 120 11600.0 93 12460. 12060 12270 91 BLACKFOOT RIVER BONNER NR, MT APR-SEP 905.0 101 995.0 112 820.0 92 892. 840 857 92 BITTERROOT RIVER AT MOUTH, MT APR-SEP 1540.0 113 1710.0 125 1360.0 100 1364. 1319 1493 102 Jun-08 Mid Month ________________Forecast______________ __________Runoff___________ Stream and Station Probable % Maximum % Minimum % Average PrevYr CurYR % N.F. FLATHEAD RIVE COLUMBIA FALLS NR, MT APR-SEP 1890.0 105 2070.0 115 1700.0 94 1801. 1780 1654 95 M.F. FLATHEAD RIVE WEST GLACIER NR, MT APR-SEP 2080.0 120 2280.0 131 1890.0 109 1740. 1737 1841 109 S.F. FLATHEAD RIVE HUNGRY HORSE RES IN, MT (1) JAN-JUL 2290.0 103 2710.0 122 1870.0 84 2224. 2357 2180 99 APR-SEP 2280.0 107 2700.0 127 1860.0 88 2124. 2175 2180 99 UPPER/MIDDLE COLUMBIA BASINS Jun-08 Mid Month ________________Forecast______________ __________Runoff___________ Stream and Station Probable % Maximum % Minimum % Average PrevYr CurYR % FLATHEAD RIVER COLUMBIA FALLS, MT APR-SEP 6410.0 110 7140.0 123 5680.0 98 5825. 6002 5766 99 FLATHEAD LAKE INFLOW, MT (1) APR-SEP 7320.0 109 8490.0 126 6140.0 91 6713. 7002 6743 98 PRIEST RIVER PRIEST RIVER, ID (1) APR-JUL 945.0 116 1130.0 139 765.0 94 814. 997 1076 98 PEND OREILLE RIVER PEND OREILLE LAKE IN, ID (1) APR-SEP 15300.0 110 17300.0 124 13400.0 96 13910. 14260 15030 96 APR-JUL 14000.0 110 15900.0 125 12100.0 95 12740. 13520 15030 96 BOX CANYON BLO, WA (1) APR-SEP 15700.0 111 17700.0 126 13700.0 97 14090. 14500 15420 97 KETTLE RIVER LAURIER NR, WA APR-SEP 1670.0 85 1930.0 98 1410.0 72 1972. 2366 1488 77 COEUR D'ALENE RIVE ENAVILLE, ID (1) APR-SEP 1330.0 171 1420.0 183 1230.0 158 778. 871 1451 113 APR-JUL 1260.0 171 1350.0 183 1160.0 157 739. 841 1451 113 COEUR D'ALENE LAKE IN, ID APR-JUL 3750.0 147 4030.0 158 3470.0 136 2552. 2456 4631 107 SPOKANE RIVER SPOKANE, WA (1) APR-SEP 4230.0 154 4300.0 157 4170.0 152 2744. 2705 4925 111 ST JOE RIVER CALDER, ID APR-SEP 1570.0 130 1690.0 140 1460.0 121 1205. 1263 1566 101 APR-JUL 1480.0 130 1600.0 141 1370.0 121 1136. 1203 1566 101 OKANAGAN RIVER TONASKET NR, WA (1) APR-SEP 1660.0 94 2100.0 119 1220.0 69 1766. 1470 1603 89 SIMILKAMEEN RIVER NIGHTHAWK NR, WA (1) APR-JUL 1220.0 90 1520.0 113 915.0 68 1350. 1079 1262 89 APR-SEP 1310.0 90 1610.0 111 1010.0 70 1450. 1122 1262 89 METHOW RIVER PATEROS NR, WA (1) APR-SEP 965.0 98 1160.0 118 770.0 78 985. 1144 921 97 CHELAN RIVER LAKE CHELAN INFLOW, WA (1) APR-SEP 1130.0 95 1340.0 113 920.0 78 1185. 1345 1072 93 WENATCHEE RIVER PESHASTIN, WA APR-SEP 1570.0 96 2070.0 127 1060.0 65 1635. 1669 1567 86 YAKIMA AND MAINSTEM SNAKE BASINS Jun-08 Mid Month ________________Forecast______________ __________Runoff___________ Stream and Station Probable % Maximum % Minimum % Average PrevYr CurYR % YAKIMA RIVER KEECHELUS LAKE IN, WA (1) APR-SEP 170.0 128 193.0 145 146.0 110 133. 137 213 93 CLE ELUM, WA APR-SEP 1090.0 121 1220.0 135 960.0 106 903. 906 1211 90 PARKER NR, WA APR-SEP 2360.0 123 2660.0 139 2050.0 107 1918. 2346 2865 95 KACHESS RIVER KACHESS LAKE INFLOW, WA (1) APR-SEP 150.0 125 168.0 140 132.0 110 120. 122 189 94 CLE ELUM RIVER CLE ELUM LAKE INFLOW, WA (1) APR-SEP 500.0 112 565.0 126 440.0 98 448. 475 550 95 NACHES RIVER NACHES NR, WA APR-SEP 980.0 117 1110.0 133 855.0 102 837. 1086 1119 99 BUMPING RIVER BUMPING LAKE INFLOW, WA (1) APR-SEP 152.0 113 180.0 134 124.0 93 134. 154 173 97 TIETON RIVER RIMROCK LAKE INFLOW, WA (1) APR-SEP 250.0 103 280.0 116 220.0 91 242. 244 275 89 AHTANUM CREEKS TAMPICO NR, WA APR-SEP 51.0 111 66.0 143 36.0 78 46. 0 SNAKE RIVER JACKSON LAKE INFLOW, WY (1) APR-JUL 895.0 110 1050.0 129 740.0 91 815. 812 936 106 APR-SEP 995.0 110 1150.0 127 835.0 92 904. 861 936 106 PALISADES RES INFLOW, ID (1) APR-JUL 3030.0 91 3460.0 104 2590.0 78 3331. 3267 3367 89 APR-SEP 3520.0 91 3960.0 102 3080.0 79 3875. 3672 3367 89 HEISE NR, ID APR-JUL 3270.0 92 3760.0 106 2780.0 78 3561. 3618 3671 89 APR-SEP 3820.0 92 4300.0 103 3330.0 80 4159. 4188 3671 89 SHELLEY NR, ID (1) APR-JUL 4150.0 94 4680.0 106 3630.0 82 4428. 4634 5022 92 APR-SEP 4990.0 94 5520.0 104 4460.0 84 5324. 5339 5022 92 BLACKFOOT NR, ID (1) APR-JUL 4330.0 94 4890.0 106 3760.0 82 4604. 0 AMER. FALLS RES IN, ID (1) APR-JUL 2620.0 81 3340.0 103 1900.0 59 3242. 2929 4312 78 MILNER, ID APR-JUL 210.0 17 405.0 33 140.0 11 1228. 996 244 9 KING HILL, ID (1) APR-JUL 1760.0 58 2520.0 83 1010.0 33 3045. 3030 3852 56 MURPHY NR, ID (1) APR-JUL 1710.0 55 2540.0 82 880.0 28 3092. 3104 3848 54 WEISER, ID (1) JAN-JUL 6040.0 62 7370.0 75 4710.0 48 9793. 12140 7333 61 APR-JUL 4000.0 69 5330.0 92 2670.0 46 5765. 8160 7333 61 APR-SEP 5410.0 75 6740.0 94 4090.0 57 7192. 9471 7333 61 BROWNLEE RES INFLOW APR-JUL 4520.0 72 6240.0 99 2800.0 44 6313. 8975 7994 62 APR-SEP 5600.0 72 7320.0 94 3880.0 50 7801. 10350 7994 62 HELLS CANYON, ID (1) APR-JUL 4730.0 73 6190.0 95 3260.0 50 6493. 9324 8453 64 APR-SEP 6170.0 77 7630.0 96 4700.0 59 7977. 10740 8453 64 LOWER GRANITE RES IN, WA (1) JAN-JUL 27100.0 90 30300.0 101 23800.0 79 30020. 32200 27920 85 FEB-SEP 28200.0 93 31500.0 104 24900.0 82 30370. 31790 27920 85 APR-JUL 22400.0 104 25700.0 119 19100.0 89 21550. 24440 27920 85 APR-SEP 24700.0 102 28000.0 116 21400.0 89 24140. 26590 27920 85 UPPER SNAKE BASINS Jun-08 Mid Month ________________Forecast______________ __________Runoff___________ Stream and Station Probable % Maximum % Minimum % Average PrevYr CurYR % GREY'S RIVER PALISADES ABV, WY APR-SEP 350.0 89 395.0 100 300.0 76 394. 401 392 107 SALT RIVER ETNA NR, WY APR-JUL 305.0 89 365.0 107 245.0 72 342. 363 378 80 HENRYS FORK ASHTON NR, ID APR-JUL 525.0 92 595.0 104 450.0 79 571. 659 801 82 ST. ANTHONY, ID APR-JUL 670.0 91 780.0 106 560.0 76 734. 819 1070 87 REXBURG NR, ID APR-JUL 1340.0 86 1510.0 97 1160.0 74 1559. 1016 1528 69 FALLS RIVER SQUIRREL NR, ID (1) APR-JUL 285.0 74 345.0 89 230.0 60 386. 370 330 67 TETON RIVER ST. ANTHONY NR, ID APR-JUL 375.0 93 450.0 112 305.0 76 403. 464 446 92 BIG LOST RIVER MACKAY RESERVOIR INFLOW, ID APR-JUL 59.0 42 100.0 70 19.0 13 142. 229 119 66 WILLOW CREEK RIRIE RESERVOIR INFLOW APR-JUL 45.0 52 69.0 80 21.0 24 86. 94 52 49 PORTNEUF RIVER TOPAZ, ID APR-SEP 56.0 59 68.0 72 44.0 46 95. 120 74 59 GOOSE CREEK OAKLEY RES INFLOW, ID APR-JUL 22.0 76 28.0 97 16.5 57 29. 0 BIG WOOD RIVER HAILEY, ID (1) APR-JUL 171.0 67 245.0 96 98.0 38 256. 431 195 70 MAGIC RESERVOIR INFLOW, ID APR-JUL 164.0 56 215.0 74 113.0 39 291. 591 176 52 LITTLE WOOD RIVER CAREY NR, ID APR-JUL 39.0 45 56.0 64 21.0 24 87. 163 60 56 MIDDLE SNAKE BASINS Jun-08 Mid Month ________________Forecast______________ __________Runoff___________ Stream and Station Probable % Maximum % Minimum % Average PrevYr CurYR % BRUNEAU RIVER HOT SPRING NR, ID APR-JUL 158.0 76 200.0 96 114.0 55 208. 276 175 66 OWYHEE RIVER OWYHEE RES INFLOW, OR MAR-JUL 465.0 76 530.0 86 400.0 65 613. 1050 530 66 OWYHEE RES OUTFLOW APR-JUL 28.0 13 34.0 16 25.0 12 217. 594 51 13 BOISE RIVER TWIN SPRINGS NR, ID (1) APR-JUL 625.0 98 725.0 114 525.0 83 636. 828 730 95 BOISE NR, ID (1) APR-JUL 1270.0 90 1490.0 105 1050.0 74 1414. 2060 1513 84 PARMA NR, ID APR-JUL 305.0 51 505.0 85 187.0 32 593. 1102 559 50 S.F. BOISE RIVER ANDERSON RNCH RES IN, ID (1) APR-JUL 420.0 77 520.0 96 315.0 58 542. 816 489 77 MALHEUR RIVER DREWSEY NR, OR MAR-JUL 89.0 81 93.0 85 84.0 76 110. 239 104 70 N.F. MALHEUR RIVER BEULAH RES INFLOW, OR (1) MAR-JUL 76.0 94 79.0 98 72.0 89 81. 155 96 92 PAYETTE RIVER HORSESHOE BEND NR, ID (1) APR-JUL 1690.0 105 2010.0 124 1370.0 85 1617. 2214 2015 96 EMMETT NR, ID APR-JUL 1350.0 108 1690.0 136 1000.0 80 1246. 1977 1669 91 DEADWOOD RIVER DEADWOOD RES INFLOW, ID (1) APR-JUL 147.0 110 171.0 128 123.0 92 134. 180 162 107 N.F. PAYETTE RIVER CASCADE RES INFLOW, ID (1) APR-JUL 515.0 104 605.0 122 430.0 87 495. 684 656 98 WEISER RIVER WEISER NR, ID (1) APR-JUL 480.0 123 590.0 151 375.0 96 391. 717 729 97 BURNT RIVER HEREFORD NR, OR MAR-JUL 59.0 116 62.0 122 56.0 110 51. 81 LOWER SNAKE AND CENTRAL OREGON BASINS Jun-08 Mid Month ________________Forecast______________ __________Runoff___________ Stream and Station Probable % Maximum % Minimum % Average PrevYr CurYR % POWDER RIVER SUMPTER NR, OR MAR-JUL 76.0 109 85.0 121 67.0 96 70. 90 IMNAHA RIVER IMNAHA, OR MAR-JUL 325.0 108 370.0 123 285.0 95 301. 394 328 100 SALMON RIVER SALMON, ID (1) APR-JUL 740.0 86 1020.0 119 460.0 54 857. 1078 972 86 WHITEBIRD, ID (1) JAN-JUL 6770.0 99 7700.0 113 5840.0 86 6805. 7274 6813 100 APR-JUL 6000.0 103 6940.0 119 5070.0 87 5851. 6441 6813 100 GRANDE RONDE RIVER LA GRANDE, OR MAR-JUL 355.0 143 375.0 151 335.0 135 249. 238 385 123 APR-JUL 310.0 168 330.0 179 290.0 158 184. 202 385 123 TROY, OR (1) MAR-JUL 1940.0 123 2330.0 148 1550.0 98 1578. 1573 2118 104 APR-JUL 1730.0 136 2120.0 166 1340.0 105 1274. 1369 2118 104 CLEARWATER RIVER OROFINO, ID (1) APR-JUL 5460.0 118 6470.0 139 4450.0 96 4645. 4316 6027 103 SPALDING, ID (1) JAN-JUL 10300.0 106 11700.0 121 8850.0 91 9683. 9175 10080 100 APR-JUL 9140.0 123 10600.0 143 7730.0 104 7435. 7274 10080 100 APR-SEP 9580.0 122 11000.0 140 8170.0 104 7849. 7550 10080 100 N.F. CLEARWATER RI DWORSHAK RES INFLOW, ID (1) JAN-JUL 3650.0 103 4070.0 115 3230.0 91 3547. 3507 3651 97 APR-JUL 3260.0 123 3680.0 139 2840.0 107 2644. 2676 3651 97 APR-SEP 3460.0 123 3880.0 138 3040.0 108 2803. 2786 3651 97 S.F. WALLA WALLA R MILTON NR, OR APR-JUL 90.0 170 98.0 185 82.0 155 53. 63 139 130 UMATILLA RIVER GIBBON NR, OR APR-JUL 128.0 175 137.0 188 118.0 162 73. 86 191 118 PENDLETON, OR APR-JUL 295.0 198 310.0 208 280.0 188 149. 178 448 121 M.F. JOHN DAY RIVE RITTER, OR (1) MAR-JUL 240.0 150 255.0 159 220.0 138 160. 0 APR-JUL 182.0 148 199.0 162 164.0 133 123. 0 N.F. JOHN DAY RIVE MONUMENT NR, OR APR-JUL 875.0 147 960.0 161 795.0 133 597. 745 1155 113 JOHN DAY RIVER SERVICE CREEK, OR (1) MAR-SEP 1420.0 123 1690.0 147 1150.0 100 1153. 1235 1526 101 APR-SEP 1210.0 140 1470.0 170 940.0 109 865. 1038 1526 101 DESCHUTES RIVER BENHAM FALLS, OR APR-SEP 545.0 103 570.0 108 520.0 98 528. 497 742 99 Jun-08 Mid Month ________________Forecast______________ __________Runoff___________ Stream and Station Probable % Maximum % Minimum % Average PrevYr CurYR % CROOKED RIVER PRINEVILLE RES INFLOW, OR MAR-JUL 161.0 88 174.0 95 149.0 81 184. 316 191 71 OCHOCO CREEK OCHOCO RES INFLOW, OR MAR-JUL 37.0 103 41.0 114 33.0 92 36. 59 WESTSIDE AND SOUTHERN OREGON BASINS Jun-08 Mid Month ________________Forecast______________ __________Runoff___________ Stream and Station Probable % Maximum % Minimum % Average PrevYr CurYR % SKAGIT RIVER CONCRETE NR, WA APR-SEP 6760.0 106 7890.0 124 5620.0 88 6365. 5621 8156 94 COWLITZ RIVER MAYFIELD RES INFLOW, WA JAN-JUL 3310.0 103 4090.0 127 2530.0 79 3217. 3453 3893 94 APR-JUL 2120.0 126 2900.0 172 1340.0 79 1689. 1642 3893 94 APR-SEP 2410.0 125 3190.0 166 1630.0 85 1922. 1817 3893 94 CASTLE ROCK, WA APR-SEP 3280.0 124 4360.0 165 2200.0 83 2639. 2380 5993 96 JAN-JUL 4900.0 104 5980.0 127 3820.0 81 4709. 5136 5993 96 LEWIS RIVER ARIEL, WA JAN-JUL 2350.0 100 2470.0 105 2240.0 95 2351. 2514 3064 93 MCKENZIE RIVER VIDA NR, OR APR-SEP 1710.0 142 1790.0 149 1630.0 136 1201. 1142 2963 111 S. SANTIAM RIVER WATERLOO, OR APR-SEP 935.0 159 1050.0 179 825.0 141 587. 540 2395 111 N. SANTIAM RIVER MEHAMA, OR APR-SEP 1380.0 165 1510.0 181 1250.0 150 834. 754 2735 117 WILLAMETTE RIVER SALEM, OR APR-SEP 6250.0 130 6840.0 142 5660.0 118 4804. 4373 17100 104 CLACKAMAS RIVER ESTACADA, OR APR-SEP 1190.0 159 1270.0 170 1100.0 147 748. 678 2065 109 N. UMPQUA RIVER LEMOLO LAKE INFLOW, OR (1) APR-SEP 122.0 81 143.0 95 101.0 67 151. 156 197 88 JAN-JUL 150.0 83 171.0 94 128.0 71 181. 195 197 88 ROGUE RIVER RAYGOLD, OR APR-SEP 1070.0 120 1130.0 127 1010.0 114 889. 895 1997 100 JAN-JUL 1690.0 107 1750.0 110 1630.0 103 1584. 1970 1997 100 CHEWAUCAN RIVER PAISLEY NR, OR MAR-JUL 62.0 70 84.0 94 39.0 44 89. 16 SILVIES RIVER BURNS NR, OR MAR-JUL 95.0 74 141.0 109 50.0 39 129. 196 APR-SEP 96.0 97 142.0 143 51.0 52 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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