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Water Supply Forecasts Northwest River Forecast Center Thursday May 29, 2008 at 23:37 GMT Observed precipitation through the 26th Future precip assumed to be normal No snow included Observed runoff through April note: current month runoff based on OBSERVED + ESP to the end of MAY UPPER COLUMBIA BASINS Jun-08 EarlyBird ________________Forecast______________ __________Runoff___________ Stream and Station Probable % Maximum % Minimum % Average PrevYr CurYR % COLUMBIA RIVER MICA RESERVOIR INFLOW, BC JAN-JUL 10000.0 104 11300.0 117 8770.0 91 9619. 9985 4327 100 FEB-SEP 13500.0 104 14800.0 114 12200.0 94 12960. 12300 4327 100 APR-SEP 13100.0 105 14300.0 114 11800.0 94 12500. 11850 4327 100 REVELSTOKE, BC JAN-JUL 14300.0 103 15400.0 111 13200.0 95 13880. 14190 6557 100 ARROW LAKES INFLOW JAN-JUL 21000.0 100 22900.0 109 19100.0 91 20960. 20790 10140 90 FEB-SEP 26700.0 101 28600.0 108 24800.0 94 26460. 24050 10140 90 APR-SEP 25800.0 103 27700.0 110 23900.0 95 25110. 22920 10140 90 BIRCHBANK, BC (1) JAN-JUL 38000.0 98 42300.0 109 33800.0 87 38930. 41180 20430 92 APR-SEP 43300.0 100 47600.0 109 39100.0 90 43500. 42860 20430 92 GRAND COULEE, WA (1) JAN-JUL 60700.0 97 66900.0 106 54500.0 87 62900. 66890 36010 88 APR-SEP 64600.0 101 70800.0 111 58400.0 91 63990. 63870 36010 88 ROCK ISLAND DAM BLO, WA (1) JAN-JUL 67200.0 98 74500.0 108 59900.0 87 68910. 71930 38800 86 APR-SEP 71300.0 103 78600.0 113 64000.0 92 69540. 68910 38800 86 THE DALLES NR, OR (1) JAN-JUL 99100.0 92 109000.0 102 89500.0 83 107300. 114700 66780 83 APR-AUG 92800.0 100 102000.0 110 83300.0 89 93090. 97540 66780 83 APR-SEP 98300.0 100 108000.0 109 88800.0 90 98650. 101700 66780 83 KOOTENAI RIVER LIBBY RES INFLOW, MT (1) JAN-JUL 5840.0 93 6960.0 110 4710.0 75 6306. 6909 3175 84 APR-AUG 5940.0 95 7070.0 113 4820.0 77 6248. 6628 3175 84 APR-SEP 6300.0 95 7430.0 112 5180.0 78 6638. 6922 3175 84 LEONIA, ID (1) APR-JUL 6820.0 97 8210.0 117 5430.0 77 7041. 7768 4539 86 APR-SEP 7870.0 97 9260.0 114 6480.0 80 8125. 8545 4539 86 BONNERS FERRY, ID APR-JUL 7460.0 98 8780.0 115 6100.0 80 7619. 8380 5039 86 KOOTENAY RIVER KOOTENAY LAKE INFLOW, BC JAN-JUL 14900.0 93 16800.0 105 12900.0 81 16010. 17210 8618 86 APR-SEP 15800.0 96 18000.0 109 13600.0 83 16450. 16790 8618 86 DUNCAN RIVER DUNCAN RESERVOIR INFLOW, BC JAN-JUL 1740.0 97 2090.0 116 1380.0 77 1800. 2033 856 97 FEB-SEP 2230.0 97 2580.0 112 1870.0 81 2305. 2361 856 97 APR-SEP 2170.0 97 2530.0 114 1820.0 82 2227. 2291 856 97 CLARK FORK BLACKFOOT RIVER ABV, MT APR-SEP 765.0 109 985.0 140 545.0 77 704. 504 556 87 MISSOULA ABV, MT APR-SEP 1650.0 103 1900.0 119 1400.0 88 1595. 1344 1128 87 MISSOULA BLO, MT APR-SEP 3120.0 105 3490.0 118 2750.0 93 2962. 2770 2015 89 ST. REGIS, MT (1) APR-SEP 4100.0 105 4840.0 124 3360.0 86 3907. 3648 2728 89 PLAINS NR, MT (1) APR-SEP 11500.0 104 13200.0 119 9870.0 89 11060. 10840 6787 84 WHITEHORSE RAPIDS, ID (1) APR-SEP 13100.0 105 15000.0 120 11200.0 90 12460. 12060 7692 81 BLACKFOOT RIVER BONNER NR, MT APR-SEP 870.0 98 960.0 108 785.0 88 892. 840 572 86 BITTERROOT RIVER AT MOUTH, MT APR-SEP 1470.0 108 1640.0 120 1290.0 95 1364. 1319 920 97 Jun-08 EarlyBird ________________Forecast______________ __________Runoff___________ Stream and Station Probable % Maximum % Minimum % Average PrevYr CurYR % N.F. FLATHEAD RIVE COLUMBIA FALLS NR, MT APR-SEP 1850.0 103 2030.0 113 1660.0 92 1801. 1780 1007 87 M.F. FLATHEAD RIVE WEST GLACIER NR, MT APR-SEP 1860.0 107 2060.0 118 1670.0 96 1740. 1737 1112 100 S.F. FLATHEAD RIVE HUNGRY HORSE RES IN, MT (1) JAN-JUL 2190.0 98 2600.0 117 1770.0 80 2224. 2357 1374 92 APR-SEP 2170.0 102 2590.0 122 1750.0 82 2124. 2175 1374 92 UPPER/MIDDLE COLUMBIA BASINS Jun-08 EarlyBird ________________Forecast______________ __________Runoff___________ Stream and Station Probable % Maximum % Minimum % Average PrevYr CurYR % FLATHEAD RIVER COLUMBIA FALLS, MT APR-SEP 6030.0 104 6760.0 116 5300.0 91 5825. 6002 3523 91 FLATHEAD LAKE INFLOW, MT (1) APR-SEP 7060.0 105 8230.0 123 5880.0 88 6713. 7002 4206 91 PRIEST RIVER PRIEST RIVER, ID (1) APR-JUL 840.0 103 1030.0 127 650.0 80 814. 997 694 79 PEND OREILLE RIVER PEND OREILLE LAKE IN, ID (1) APR-SEP 14400.0 104 16500.0 119 12400.0 89 13910. 14260 9806 87 APR-JUL 13200.0 104 15300.0 120 11100.0 87 12740. 13520 9806 87 BOX CANYON BLO, WA (1) APR-SEP 14600.0 104 16700.0 119 12400.0 88 14090. 14500 10100 88 KETTLE RIVER LAURIER NR, WA APR-SEP 1780.0 90 2040.0 103 1520.0 77 1972. 2366 994 73 COEUR D'ALENE RIVE ENAVILLE, ID (1) APR-SEP 1040.0 134 1130.0 145 940.0 121 778. 871 1171 101 APR-JUL 985.0 133 1080.0 146 890.0 120 739. 841 1171 101 COEUR D'ALENE LAKE IN, ID APR-JUL 3250.0 127 3530.0 138 2970.0 116 2552. 2456 3582 94 SPOKANE RIVER SPOKANE, WA (1) APR-SEP 3610.0 132 3680.0 134 3540.0 129 2744. 2705 3662 95 ST JOE RIVER CALDER, ID APR-SEP 1480.0 123 1600.0 133 1370.0 114 1205. 1263 1031 81 APR-JUL 1400.0 123 1510.0 133 1290.0 114 1136. 1203 1031 81 OKANAGAN RIVER TONASKET NR, WA (1) APR-SEP 1640.0 93 2110.0 119 1170.0 66 1766. 1470 1034 86 SIMILKAMEEN RIVER NIGHTHAWK NR, WA (1) APR-JUL 1280.0 95 1590.0 118 960.0 71 1350. 1079 827 93 APR-SEP 1370.0 94 1680.0 116 1050.0 72 1450. 1122 827 93 METHOW RIVER PATEROS NR, WA (1) APR-SEP 935.0 95 1140.0 116 725.0 74 985. 1144 634 105 CHELAN RIVER LAKE CHELAN INFLOW, WA (1) APR-SEP 1180.0 100 1390.0 117 970.0 82 1185. 1345 779 99 WENATCHEE RIVER PESHASTIN, WA APR-SEP 1680.0 103 2180.0 133 1170.0 72 1635. 1669 1081 81 YAKIMA AND MAINSTEM SNAKE BASINS Jun-08 EarlyBird ________________Forecast______________ __________Runoff___________ Stream and Station Probable % Maximum % Minimum % Average PrevYr CurYR % YAKIMA RIVER KEECHELUS LAKE IN, WA (1) APR-SEP 164.0 123 187.0 141 140.0 105 133. 137 162 83 CLE ELUM, WA APR-SEP 1070.0 118 1190.0 132 935.0 104 903. 906 922 83 PARKER NR, WA APR-SEP 2360.0 123 2660.0 139 2050.0 107 1918. 2346 2250 89 KACHESS RIVER KACHESS LAKE INFLOW, WA (1) APR-SEP 147.0 123 165.0 138 129.0 108 120. 122 148 87 CLE ELUM RIVER CLE ELUM LAKE INFLOW, WA (1) APR-SEP 540.0 121 605.0 135 475.0 106 448. 475 407 90 NACHES RIVER NACHES NR, WA APR-SEP 1000.0 119 1130.0 135 880.0 105 837. 1086 870 97 BUMPING RIVER BUMPING LAKE INFLOW, WA (1) APR-SEP 148.0 110 176.0 131 120.0 90 134. 154 125 91 TIETON RIVER RIMROCK LAKE INFLOW, WA (1) APR-SEP 265.0 110 295.0 122 235.0 97 242. 244 210 86 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 875.0 107 1030.0 126 720.0 88 815. 812 502 94 APR-SEP 970.0 107 1130.0 125 815.0 90 904. 861 502 94 PALISADES RES INFLOW, ID (1) APR-JUL 3400.0 102 3830.0 115 2960.0 89 3331. 3267 2092 84 APR-SEP 3950.0 102 4390.0 113 3510.0 91 3875. 3672 2092 84 HEISE NR, ID APR-JUL 3620.0 102 4110.0 115 3130.0 88 3561. 3618 2325 84 APR-SEP 4230.0 102 4710.0 113 3740.0 90 4159. 4188 2325 84 SHELLEY NR, ID (1) APR-JUL 4730.0 107 5280.0 119 4180.0 94 4428. 4634 3334 89 APR-SEP 5690.0 107 6240.0 117 5140.0 97 5324. 5339 3334 89 BLACKFOOT NR, ID (1) APR-JUL 4760.0 103 5350.0 116 4170.0 91 4604. 0 AMER. FALLS RES IN, ID (1) APR-JUL 3360.0 104 4170.0 129 2550.0 79 3242. 2929 3186 73 MILNER, ID APR-JUL 420.0 34 1070.0 87 200.0 16 1228. 996 203 8 KING HILL, ID (1) APR-JUL 2040.0 67 2840.0 93 1240.0 41 3045. 3030 3400 56 MURPHY NR, ID (1) APR-JUL 2020.0 65 2900.0 94 1150.0 37 3092. 3104 3407 53 WEISER, ID (1) JAN-JUL 6360.0 65 7780.0 79 4940.0 50 9793. 12140 6175 59 APR-JUL 4320.0 75 5730.0 99 2900.0 50 5765. 8160 6175 59 APR-SEP 5740.0 80 7160.0 100 4320.0 60 7192. 9471 6175 59 BROWNLEE RES INFLOW APR-JUL 4820.0 76 6540.0 104 3100.0 49 6313. 8975 6741 59 APR-SEP 5940.0 76 7660.0 98 4220.0 54 7801. 10350 6741 59 HELLS CANYON, ID (1) APR-JUL 5020.0 77 6590.0 101 3440.0 53 6493. 9324 7075 62 APR-SEP 6470.0 81 8040.0 101 4890.0 61 7977. 10740 7075 62 LOWER GRANITE RES IN, WA (1) JAN-JUL 26500.0 88 30000.0 100 23000.0 77 30020. 32200 19990 77 FEB-SEP 27600.0 91 31100.0 102 24100.0 79 30370. 31790 19990 77 APR-JUL 21800.0 101 25400.0 118 18300.0 85 21550. 24440 19990 77 APR-SEP 24100.0 100 27600.0 114 20600.0 85 24140. 26590 19990 77 UPPER SNAKE BASINS Jun-08 EarlyBird ________________Forecast______________ __________Runoff___________ Stream and Station Probable % Maximum % Minimum % Average PrevYr CurYR % GREY'S RIVER PALISADES ABV, WY APR-SEP 400.0 102 450.0 114 355.0 90 394. 401 262 108 SALT RIVER ETNA NR, WY APR-JUL 325.0 95 385.0 113 265.0 77 342. 363 284 77 HENRYS FORK ASHTON NR, ID APR-JUL 560.0 98 635.0 111 490.0 86 571. 659 670 80 ST. ANTHONY, ID APR-JUL 735.0 100 850.0 116 620.0 84 734. 819 844 83 REXBURG NR, ID APR-JUL 1520.0 97 1700.0 109 1340.0 86 1559. 1016 1167 68 FALLS RIVER SQUIRREL NR, ID (1) APR-JUL 360.0 93 415.0 108 305.0 79 386. 370 223 63 TETON RIVER ST. ANTHONY NR, ID APR-JUL 430.0 107 505.0 125 360.0 89 403. 464 295 89 BIG LOST RIVER MACKAY RESERVOIR INFLOW, ID APR-JUL 124.0 87 164.0 115 83.0 58 142. 229 82 69 WILLOW CREEK RIRIE RESERVOIR INFLOW APR-JUL 55.0 64 81.0 94 28.0 33 86. 94 45 50 PORTNEUF RIVER TOPAZ, ID APR-SEP 79.0 83 91.0 96 67.0 71 95. 120 63 59 GOOSE CREEK OAKLEY RES INFLOW, ID APR-JUL 26.0 90 32.0 110 20.0 69 29. 0 BIG WOOD RIVER HAILEY, ID (1) APR-JUL 225.0 88 300.0 117 147.0 57 256. 431 142 78 MAGIC RESERVOIR INFLOW, ID APR-JUL 240.0 82 290.0 100 189.0 65 291. 591 142 55 LITTLE WOOD RIVER CAREY NR, ID APR-JUL 65.0 75 82.0 94 48.0 55 87. 163 51 60 MIDDLE SNAKE BASINS Jun-08 EarlyBird ________________Forecast______________ __________Runoff___________ Stream and Station Probable % Maximum % Minimum % Average PrevYr CurYR % BRUNEAU RIVER HOT SPRING NR, ID APR-JUL 177.0 85 220.0 106 133.0 64 208. 276 135 67 OWYHEE RIVER OWYHEE RES INFLOW, OR MAR-JUL 465.0 76 530.0 86 400.0 65 613. 1050 493 66 OWYHEE RES OUTFLOW APR-JUL 28.0 13 34.0 16 25.0 12 217. 594 40 11 BOISE RIVER TWIN SPRINGS NR, ID (1) APR-JUL 645.0 101 745.0 117 545.0 86 636. 828 572 100 BOISE NR, ID (1) APR-JUL 1350.0 95 1590.0 112 1120.0 79 1414. 2060 1209 86 PARMA NR, ID APR-JUL 305.0 51 520.0 88 121.0 20 593. 1102 485 50 S.F. BOISE RIVER ANDERSON RNCH RES IN, ID (1) APR-JUL 480.0 89 585.0 108 380.0 70 542. 816 376 80 MALHEUR RIVER DREWSEY NR, OR MAR-JUL 80.0 73 85.0 77 76.0 69 110. 239 89 63 N.F. MALHEUR RIVER BEULAH RES INFLOW, OR (1) MAR-JUL 75.0 93 79.0 98 71.0 88 81. 155 77 82 PAYETTE RIVER HORSESHOE BEND NR, ID (1) APR-JUL 1700.0 105 2020.0 125 1380.0 85 1617. 2214 1520 97 EMMETT NR, ID APR-JUL 1390.0 112 1740.0 140 1040.0 83 1246. 1977 1311 91 DEADWOOD RIVER DEADWOOD RES INFLOW, ID (1) APR-JUL 141.0 105 165.0 123 117.0 87 134. 180 107 105 N.F. PAYETTE RIVER CASCADE RES INFLOW, ID (1) APR-JUL 525.0 106 620.0 125 425.0 86 495. 684 492 100 WEISER RIVER WEISER NR, ID (1) APR-JUL 460.0 118 585.0 150 335.0 86 391. 717 632 94 BURNT RIVER HEREFORD NR, OR MAR-JUL 55.0 108 59.0 116 52.0 102 51. 81 LOWER SNAKE AND CENTRAL OREGON BASINS Jun-08 EarlyBird ________________Forecast______________ __________Runoff___________ Stream and Station Probable % Maximum % Minimum % Average PrevYr CurYR % POWDER RIVER SUMPTER NR, OR MAR-JUL 70.0 100 80.0 114 61.0 87 70. 90 IMNAHA RIVER IMNAHA, OR MAR-JUL 320.0 106 365.0 121 280.0 93 301. 394 235 95 SALMON RIVER SALMON, ID (1) APR-JUL 855.0 100 1140.0 133 570.0 67 857. 1078 735 95 WHITEBIRD, ID (1) JAN-JUL 7000.0 103 8000.0 118 6000.0 88 6805. 7274 4722 105 APR-JUL 6230.0 106 7230.0 124 5230.0 89 5851. 6441 4722 105 GRANDE RONDE RIVER LA GRANDE, OR MAR-JUL 290.0 116 310.0 124 270.0 108 249. 238 294 103 APR-JUL 225.0 122 245.0 133 205.0 111 184. 202 294 103 TROY, OR (1) MAR-JUL 1740.0 110 2140.0 136 1350.0 86 1578. 1573 1548 91 APR-JUL 1530.0 120 1930.0 151 1140.0 89 1274. 1369 1548 91 CLEARWATER RIVER OROFINO, ID (1) APR-JUL 5100.0 110 6150.0 132 4040.0 87 4645. 4316 3626 84 SPALDING, ID (1) JAN-JUL 9340.0 96 10800.0 112 7880.0 81 9683. 9175 6352 82 APR-JUL 8220.0 111 9680.0 130 6760.0 91 7435. 7274 6352 82 APR-SEP 8620.0 110 10100.0 129 7160.0 91 7849. 7550 6352 82 N.F. CLEARWATER RI DWORSHAK RES INFLOW, ID (1) JAN-JUL 3220.0 91 3650.0 103 2790.0 79 3547. 3507 2310 76 APR-JUL 2830.0 107 3260.0 123 2390.0 90 2644. 2676 2310 76 APR-SEP 3000.0 107 3430.0 122 2570.0 92 2803. 2786 2310 76 S.F. WALLA WALLA R MILTON NR, OR APR-JUL 86.0 162 94.0 177 78.0 147 53. 63 117 123 UMATILLA RIVER GIBBON NR, OR APR-JUL 105.0 144 115.0 158 95.0 130 73. 86 162 107 PENDLETON, OR APR-JUL 220.0 148 235.0 158 205.0 138 149. 178 395 112 M.F. JOHN DAY RIVE RITTER, OR (1) MAR-JUL 170.0 106 187.0 117 152.0 95 160. 0 APR-JUL 160.0 130 177.0 144 142.0 115 123. 0 N.F. JOHN DAY RIVE MONUMENT NR, OR APR-JUL 785.0 131 870.0 146 700.0 117 597. 745 964 106 JOHN DAY RIVER SERVICE CREEK, OR (1) MAR-SEP 1250.0 108 1540.0 134 965.0 84 1153. 1235 1248 92 APR-SEP 1040.0 120 1320.0 153 755.0 87 865. 1038 1248 92 DESCHUTES RIVER BENHAM FALLS, OR APR-SEP 515.0 98 540.0 102 490.0 93 528. 497 630 95 Jun-08 EarlyBird ________________Forecast______________ __________Runoff___________ Stream and Station Probable % Maximum % Minimum % Average PrevYr CurYR % CROOKED RIVER PRINEVILLE RES INFLOW, OR MAR-JUL 164.0 89 177.0 96 152.0 83 184. 316 186 71 OCHOCO CREEK OCHOCO RES INFLOW, OR MAR-JUL 36.0 100 40.0 111 32.0 89 36. 59 WESTSIDE AND SOUTHERN OREGON BASINS Jun-08 EarlyBird ________________Forecast______________ __________Runoff___________ Stream and Station Probable % Maximum % Minimum % Average PrevYr CurYR % SKAGIT RIVER CONCRETE NR, WA APR-SEP 6650.0 104 7790.0 122 5520.0 87 6365. 5621 6603 94 COWLITZ RIVER MAYFIELD RES INFLOW, WA JAN-JUL 3240.0 101 4030.0 125 2450.0 76 3217. 3453 3244 88 APR-JUL 2050.0 121 2840.0 168 1260.0 75 1689. 1642 3244 88 APR-SEP 2330.0 121 3120.0 162 1540.0 80 1922. 1817 3244 88 CASTLE ROCK, WA APR-SEP 3070.0 116 4150.0 157 1980.0 75 2639. 2380 5131 91 JAN-JUL 4710.0 100 5790.0 123 3620.0 77 4709. 5136 5131 91 LEWIS RIVER ARIEL, WA JAN-JUL 2280.0 97 2390.0 102 2170.0 92 2351. 2514 2699 88 MCKENZIE RIVER VIDA NR, OR APR-SEP 1520.0 127 1600.0 133 1430.0 119 1201. 1142 2594 106 S. SANTIAM RIVER WATERLOO, OR APR-SEP 825.0 141 935.0 159 715.0 122 587. 540 2173 105 N. SANTIAM RIVER MEHAMA, OR APR-SEP 1260.0 151 1390.0 167 1130.0 135 834. 754 2403 110 WILLAMETTE RIVER SALEM, OR APR-SEP 5540.0 115 6130.0 128 4950.0 103 4804. 4373 15660 100 CLACKAMAS RIVER ESTACADA, OR APR-SEP 1030.0 138 1110.0 148 945.0 126 748. 678 1804 103 N. UMPQUA RIVER LEMOLO LAKE INFLOW, OR (1) APR-SEP 146.0 97 167.0 111 125.0 83 151. 156 155 80 JAN-JUL 168.0 93 189.0 104 146.0 81 181. 195 155 80 ROGUE RIVER RAYGOLD, OR APR-SEP 1010.0 114 1070.0 120 950.0 107 889. 895 1774 96 JAN-JUL 1640.0 104 1700.0 107 1580.0 100 1584. 1970 1774 96 CHEWAUCAN RIVER PAISLEY NR, OR MAR-JUL 57.0 64 79.0 89 35.0 39 89. 16 SILVIES RIVER BURNS NR, OR MAR-JUL 63.0 49 108.0 84 17.2 13 129. 196 APR-SEP 64.0 65 110.0 111 18.5 19 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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