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Water Supply Forecasts Northwest River Forecast Center Monday May 07, 2007 at 20:06 GMT Full month of observed precipitation Future precip assumed to be normal Snow included in this run Full complement runoff applied through APR UPPER COLUMBIA BASINS May-07 Final ________________Forecast______________ __________Runoff___________ Stream and Station Probable % Maximum % Minimum % Average PrevYr CurYR % COLUMBIA RIVER MICA RESERVOIR INFLOW, BC JAN-JUL 10800.0 112 12100.0 126 9480.0 99 9619. 9985 2481 97 FEB-SEP 14500.0 112 15800.0 122 13200.0 102 12960. 12300 2481 97 APR-SEP 14000.0 112 15200.0 122 12700.0 102 12500. 11850 2481 97 REVELSTOKE, BC JAN-JUL 15400.0 111 16400.0 118 14300.0 103 13880. 14190 3477 93 ARROW LAKES INFLOW JAN-JUL 22700.0 108 24700.0 118 20700.0 99 20960. 20790 6162 91 FEB-SEP 28800.0 109 30800.0 116 26800.0 101 26460. 24050 6162 91 APR-SEP 27300.0 109 29300.0 117 25300.0 101 25110. 22920 6162 91 BIRCHBANK, BC (1) JAN-JUL 42700.0 110 47100.0 121 38200.0 98 38930. 41180 13750 109 APR-SEP 46800.0 108 51200.0 118 42300.0 97 43500. 42860 13750 109 GRAND COULEE, WA (1) JAN-JUL 65300.0 104 72000.0 114 58500.0 93 62900. 66890 26800 109 APR-SEP 64800.0 101 71600.0 112 58100.0 91 63990. 63870 26800 109 ROCK ISLAND DAM BLO, WA (1) JAN-JUL 73300.0 106 81100.0 118 65500.0 95 68910. 71930 29870 111 APR-SEP 72300.0 104 80100.0 115 64500.0 93 69540. 68910 29870 111 THE DALLES NR, OR (1) JAN-JUL 99100.0 92 110000.0 103 88200.0 82 107300. 114700 52080 97 APR-AUG 84200.0 90 95100.0 102 73300.0 79 93090. 97540 52080 97 APR-SEP 89200.0 90 100000.0 101 78300.0 79 98650. 101700 52080 97 KOOTENAI RIVER LIBBY RES INFLOW, MT (1) JAN-JUL 6790.0 108 7990.0 127 5590.0 89 6306. 6909 2456 118 APR-AUG 6560.0 105 7760.0 124 5360.0 86 6248. 6628 2456 118 APR-SEP 6980.0 105 8180.0 123 5780.0 87 6638. 6922 2456 118 LEONIA, ID (1) APR-JUL 7270.0 103 8750.0 124 5790.0 82 7041. 7768 3704 122 APR-SEP 8390.0 103 9870.0 121 6910.0 85 8125. 8545 3704 122 BONNERS FERRY, ID APR-JUL 7670.0 101 9180.0 120 6240.0 82 7619. 8380 4149 124 KOOTENAY RIVER KOOTENAY LAKE INFLOW, BC JAN-JUL 17800.0 111 19900.0 124 15700.0 98 16010. 17210 6779 122 APR-SEP 17700.0 108 20100.0 122 15300.0 93 16450. 16790 6779 122 DUNCAN RIVER DUNCAN RESERVOIR INFLOW, BC JAN-JUL 2020.0 112 2380.0 132 1660.0 92 1800. 2033 512 104 FEB-SEP 2580.0 112 2940.0 128 2220.0 96 2305. 2361 512 104 APR-SEP 2460.0 110 2820.0 127 2100.0 94 2227. 2291 512 104 CLARK FORK BLACKFOOT RIVER ABV, MT APR-SEP 565.0 80 790.0 112 345.0 49 704. 504 388 88 MISSOULA ABV, MT APR-SEP 1290.0 81 1680.0 105 905.0 57 1595. 1344 817 101 MISSOULA BLO, MT APR-SEP 2310.0 78 2920.0 99 1710.0 58 2962. 2770 1472 109 ST. REGIS, MT (1) APR-SEP 3120.0 80 4020.0 103 2220.0 57 3907. 3648 2033 109 PLAINS NR, MT (1) APR-SEP 9710.0 88 11600.0 105 7810.0 71 11060. 10840 5257 115 WHITEHORSE RAPIDS, ID (1) APR-SEP 10800.0 87 13100.0 105 8530.0 68 12460. 12060 6031 110 BLACKFOOT RIVER BONNER NR, MT APR-SEP 720.0 81 965.0 108 470.0 53 892. 840 430 117 BITTERROOT RIVER AT MOUTH, MT APR-SEP 1030.0 76 1290.0 95 765.0 56 1364. 1319 627 115 May-07 Final ________________Forecast______________ __________Runoff___________ Stream and Station Probable % Maximum % Minimum % Average PrevYr CurYR % N.F. FLATHEAD RIVE COLUMBIA FALLS NR, MT APR-SEP 1780.0 99 2100.0 117 1460.0 81 1801. 1780 885 156 M.F. FLATHEAD RIVE WEST GLACIER NR, MT APR-SEP 1590.0 91 1850.0 106 1320.0 76 1740. 1737 810 149 S.F. FLATHEAD RIVE HUNGRY HORSE RES IN, MT (1) JAN-JUL 2050.0 92 2480.0 112 1620.0 73 2224. 2357 952 127 APR-SEP 1810.0 85 2240.0 105 1380.0 65 2124. 2175 952 127 UPPER/MIDDLE COLUMBIA BASINS May-07 Final ________________Forecast______________ __________Runoff___________ Stream and Station Probable % Maximum % Minimum % Average PrevYr CurYR % FLATHEAD RIVER COLUMBIA FALLS, MT APR-SEP 5350.0 92 6380.0 110 4310.0 74 5825. 6002 2595 134 FLATHEAD LAKE INFLOW, MT (1) APR-SEP 6210.0 93 7500.0 112 4920.0 73 6713. 7002 3308 137 PRIEST RIVER PRIEST RIVER, ID (1) APR-JUL 755.0 93 955.0 117 555.0 68 814. 997 694 125 PEND OREILLE RIVER PEND OREILLE LAKE IN, ID (1) APR-SEP 12100.0 87 14600.0 105 9640.0 69 13910. 14260 8051 120 APR-JUL 11100.0 87 13600.0 107 8620.0 68 12740. 13520 8051 120 BOX CANYON BLO, WA (1) APR-SEP 12400.0 88 15000.0 106 9900.0 70 14090. 14500 8363 120 KETTLE RIVER LAURIER NR, WA APR-SEP 1890.0 96 2230.0 113 1540.0 78 1972. 2366 582 96 COEUR D'ALENE RIVE ENAVILLE, ID (1) APR-SEP 610.0 78 775.0 100 450.0 58 778. 871 1061 120 APR-JUL 580.0 78 745.0 101 420.0 57 739. 841 1061 120 COEUR D'ALENE LAKE IN, ID APR-JUL 1950.0 76 2480.0 97 1420.0 56 2552. 2456 3010 107 SPOKANE RIVER SPOKANE, WA (1) APR-SEP 2190.0 80 2270.0 83 2120.0 77 2744. 2705 3238 113 ST JOE RIVER CALDER, ID APR-SEP 995.0 83 1180.0 98 805.0 67 1205. 1263 994 123 APR-JUL 935.0 82 1120.0 99 750.0 66 1136. 1203 994 123 OKANAGAN RIVER TONASKET NR, WA (1) APR-SEP 1900.0 108 2410.0 136 1380.0 78 1766. 1470 1051 158 SIMILKAMEEN RIVER NIGHTHAWK NR, WA (1) APR-JUL 1580.0 117 1920.0 142 1250.0 93 1350. 1079 882 222 APR-SEP 1700.0 117 2040.0 141 1370.0 94 1450. 1122 882 222 METHOW RIVER PATEROS NR, WA (1) APR-SEP 1120.0 114 1340.0 136 890.0 90 985. 1144 509 181 CHELAN RIVER LAKE CHELAN INFLOW, WA (1) APR-SEP 1280.0 108 1420.0 120 1130.0 95 1185. 1345 777 168 WENATCHEE RIVER PESHASTIN, WA APR-SEP 1650.0 101 2160.0 132 1130.0 69 1635. 1669 1227 142 YAKIMA AND MAINSTEM SNAKE BASINS May-07 Final ________________Forecast______________ __________Runoff___________ Stream and Station Probable % Maximum % Minimum % Average PrevYr CurYR % YAKIMA RIVER KEECHELUS LAKE IN, WA (1) APR-SEP 130.0 98 156.0 117 103.0 77 133. 137 176 117 CLE ELUM, WA APR-SEP 865.0 96 980.0 109 750.0 83 903. 906 1059 129 PARKER NR, WA APR-SEP 1910.0 100 2140.0 112 1690.0 88 1918. 2346 2658 139 KACHESS RIVER KACHESS LAKE INFLOW, WA (1) APR-SEP 121.0 101 138.0 115 103.0 86 120. 122 167 129 CLE ELUM RIVER CLE ELUM LAKE INFLOW, WA (1) APR-SEP 425.0 95 475.0 106 375.0 84 448. 475 424 135 NACHES RIVER NACHES NR, WA APR-SEP 800.0 96 915.0 109 685.0 82 837. 1086 1025 162 BUMPING RIVER BUMPING LAKE INFLOW, WA (1) APR-SEP 137.0 102 160.0 119 114.0 85 134. 154 148 154 TIETON RIVER RIMROCK LAKE INFLOW, WA (1) APR-SEP 235.0 97 265.0 110 200.0 83 242. 244 253 140 AHTANUM CREEKS TAMPICO NR, WA APR-SEP 38.0 83 54.0 117 22.0 48 46. 0 SNAKE RIVER JACKSON LAKE INFLOW, WY (1) APR-JUL 575.0 71 700.0 86 445.0 55 815. 812 264 98 APR-SEP 640.0 71 765.0 85 510.0 56 904. 861 264 98 PALISADES RES INFLOW, ID (1) APR-JUL 2180.0 65 2640.0 79 1710.0 51 3331. 3267 1335 92 APR-SEP 2540.0 66 3000.0 77 2080.0 54 3875. 3672 1335 92 HEISE NR, ID APR-JUL 2340.0 66 2840.0 80 1830.0 51 3561. 3618 1580 95 APR-SEP 2730.0 66 3230.0 78 2220.0 53 4159. 4188 1580 95 SHELLEY NR, ID (1) APR-JUL 3040.0 69 3680.0 83 2400.0 54 4428. 4634 2524 107 APR-SEP 3660.0 69 4300.0 81 3010.0 57 5324. 5339 2524 107 BLACKFOOT NR, ID (1) APR-JUL 3060.0 66 3720.0 81 2400.0 52 4604. 0 AMER. FALLS RES IN, ID (1) APR-JUL 1560.0 48 2500.0 77 610.0 19 3242. 2929 2760 86 MILNER, ID APR-JUL 215.0 18 630.0 51 130.0 11 1228. 996 520 25 KING HILL, ID (1) APR-JUL 1630.0 54 2510.0 82 740.0 24 3045. 3030 3257 62 MURPHY NR, ID (1) APR-JUL 1690.0 55 2620.0 85 750.0 24 3092. 3104 3389 62 WEISER, ID (1) JAN-JUL 5100.0 52 6670.0 68 3540.0 36 9793. 12140 5127 59 APR-JUL 2810.0 49 4380.0 76 1240.0 22 5765. 8160 5127 59 APR-SEP 4190.0 58 5760.0 80 2620.0 36 7192. 9471 5127 59 BROWNLEE RES INFLOW APR-JUL 3040.0 48 4940.0 78 1140.0 18 6313. 8975 5509 59 APR-SEP 4360.0 56 6260.0 80 2460.0 32 7801. 10350 5509 59 HELLS CANYON, ID (1) APR-JUL 3120.0 48 4860.0 75 1380.0 21 6493. 9324 5704 60 APR-SEP 4520.0 57 6260.0 78 2780.0 35 7977. 10740 5704 60 LOWER GRANITE RES IN, WA (1) JAN-JUL 20600.0 69 24800.0 83 16500.0 55 30020. 32200 14380 77 FEB-SEP 20900.0 69 25100.0 83 16800.0 55 30370. 31790 14380 77 APR-JUL 14200.0 66 18400.0 85 10100.0 47 21550. 24440 14380 77 APR-SEP 16000.0 66 20200.0 84 11900.0 49 24140. 26590 14380 77 UPPER SNAKE BASINS May-07 Final ________________Forecast______________ __________Runoff___________ Stream and Station Probable % Maximum % Minimum % Average PrevYr CurYR % GREY'S RIVER PALISADES ABV, WY APR-SEP 250.0 63 300.0 76 198.0 50 394. 401 149 113 SALT RIVER ETNA NR, WY APR-JUL 205.0 60 285.0 83 124.0 36 342. 363 231 92 HENRYS FORK ASHTON NR, ID APR-JUL 435.0 76 555.0 97 320.0 56 571. 659 638 101 ST. ANTHONY, ID APR-JUL 515.0 70 675.0 92 350.0 48 734. 819 810 110 REXBURG NR, ID APR-JUL 1150.0 74 1410.0 90 890.0 57 1559. 1016 1005 83 FALLS RIVER SQUIRREL NR, ID (1) APR-JUL 270.0 70 335.0 87 205.0 53 386. 370 181 83 TETON RIVER ST. ANTHONY NR, ID APR-JUL 270.0 67 350.0 87 190.0 47 403. 464 247 113 BIG LOST RIVER MACKAY RESERVOIR INFLOW, ID APR-JUL 76.0 54 109.0 77 43.0 30 142. 229 73 84 WILLOW CREEK RIRIE RESERVOIR INFLOW APR-JUL 29.0 34 58.0 67 0.2 0 86. 94 34 71 PORTNEUF RIVER TOPAZ, ID APR-SEP 53.0 56 65.0 68 41.0 43 95. 120 61 77 GOOSE CREEK OAKLEY RES INFLOW, ID APR-JUL 18.5 64 29.0 100 8.0 28 29. 0 BIG WOOD RIVER HAILEY, ID (1) APR-JUL 128.0 50 205.0 80 49.0 19 256. 431 95 95 MAGIC RESERVOIR INFLOW, ID APR-JUL 75.0 26 175.0 60 0.0 0 291. 591 85 51 LITTLE WOOD RIVER CAREY NR, ID APR-JUL 28.0 32 53.0 61 3.2 4 87. 163 28 52 MIDDLE SNAKE BASINS May-07 Final ________________Forecast______________ __________Runoff___________ Stream and Station Probable % Maximum % Minimum % Average PrevYr CurYR % BRUNEAU RIVER HOT SPRING NR, ID APR-JUL 129.0 62 210.0 101 50.0 24 208. 276 80 66 OWYHEE RIVER OWYHEE RES INFLOW, OR MAR-JUL 177.0 29 325.0 53 26.0 4 613. 1050 242 40 OWYHEE RES OUTFLOW APR-JUL 25.0 12 137.0 63 8.9 4 217. 594 44 15 BOISE RIVER TWIN SPRINGS NR, ID (1) APR-JUL 400.0 63 510.0 80 290.0 46 636. 828 318 93 BOISE NR, ID (1) APR-JUL 785.0 56 1030.0 73 545.0 39 1414. 2060 709 80 PARMA NR, ID APR-JUL 113.0 19 265.0 45 81.0 14 593. 1102 329 42 S.F. BOISE RIVER ANDERSON RNCH RES IN, ID (1) APR-JUL 275.0 51 375.0 69 171.0 32 542. 816 221 84 MALHEUR RIVER DREWSEY NR, OR MAR-JUL 44.0 40 54.0 49 34.0 31 110. 239 60 51 N.F. MALHEUR RIVER BEULAH RES INFLOW, OR (1) MAR-JUL 32.0 40 40.0 49 25.0 31 81. 155 34 47 PAYETTE RIVER HORSESHOE BEND NR, ID (1) APR-JUL 1010.0 62 1330.0 82 685.0 42 1617. 2214 885 90 EMMETT NR, ID APR-JUL 750.0 60 1100.0 88 405.0 33 1246. 1977 668 64 DEADWOOD RIVER DEADWOOD RES INFLOW, ID (1) APR-JUL 93.0 69 117.0 87 69.0 51 134. 180 63 124 N.F. PAYETTE RIVER CASCADE RES INFLOW, ID (1) APR-JUL 315.0 64 420.0 85 210.0 42 495. 684 282 92 WEISER RIVER WEISER NR, ID (1) APR-JUL 180.0 46 320.0 82 40.0 10 391. 717 254 49 BURNT RIVER HEREFORD NR, OR MAR-JUL 19.2 38 28.0 55 10.5 21 51. 81 27 53 LOWER SNAKE AND CENTRAL OREGON BASINS May-07 Final ________________Forecast______________ __________Runoff___________ Stream and Station Probable % Maximum % Minimum % Average PrevYr CurYR % POWDER RIVER SUMPTER NR, OR MAR-JUL 33.0 47 47.0 67 18.6 27 70. 90 IMNAHA RIVER IMNAHA, OR MAR-JUL 189.0 63 245.0 81 133.0 44 301. 394 120 79 SALMON RIVER SALMON, ID (1) APR-JUL 605.0 71 895.0 104 315.0 37 857. 1078 585 107 WHITEBIRD, ID (1) JAN-JUL 5070.0 75 6200.0 91 3940.0 58 6805. 7274 2571 100 APR-JUL 4150.0 71 5280.0 90 3030.0 52 5851. 6441 2571 100 GRANDE RONDE RIVER LA GRANDE, OR MAR-JUL 156.0 63 195.0 78 117.0 47 249. 238 153 72 APR-JUL 102.0 55 141.0 77 63.0 34 184. 202 153 72 TROY, OR (1) MAR-JUL 1100.0 70 1500.0 95 700.0 44 1578. 1573 1029 82 APR-JUL 820.0 64 1220.0 96 420.0 33 1274. 1369 1029 82 CLEARWATER RIVER OROFINO, ID (1) APR-JUL 3700.0 80 4840.0 104 2570.0 55 4645. 4316 2653 103 SPALDING, ID (1) JAN-JUL 8200.0 85 9800.0 101 6600.0 68 9683. 9175 5215 105 APR-JUL 5840.0 79 7440.0 100 4240.0 57 7435. 7274 5215 105 APR-SEP 6190.0 79 7790.0 99 4590.0 58 7849. 7550 5215 105 N.F. CLEARWATER RI DWORSHAK RES INFLOW, ID (1) JAN-JUL 3000.0 85 3500.0 99 2500.0 70 3547. 3507 2156 107 APR-JUL 2060.0 78 2560.0 97 1560.0 59 2644. 2676 2156 107 APR-SEP 2190.0 78 2690.0 96 1690.0 60 2803. 2786 2156 107 S.F. WALLA WALLA R MILTON NR, OR APR-JUL 49.0 92 59.0 111 38.0 72 53. 63 93 120 UMATILLA RIVER GIBBON NR, OR APR-JUL 55.0 75 73.0 100 37.0 51 73. 86 128 104 PENDLETON, OR APR-JUL 98.0 66 136.0 91 59.0 40 149. 178 291 98 M.F. JOHN DAY RIVE RITTER, OR (1) MAR-JUL 88.0 55 114.0 71 63.0 39 160. 0 APR-JUL 68.0 55 94.0 76 43.0 35 123. 0 N.F. JOHN DAY RIVE MONUMENT NR, OR APR-JUL 375.0 63 515.0 86 230.0 39 597. 745 596 89 JOHN DAY RIVER SERVICE CREEK, OR (1) MAR-SEP 755.0 65 1060.0 92 455.0 39 1153. 1235 787 77 APR-SEP 490.0 57 790.0 91 189.0 22 865. 1038 787 77 DESCHUTES RIVER BENHAM FALLS, OR APR-SEP 500.0 95 530.0 100 470.0 89 528. 497 527 93 May-07 Final ________________Forecast______________ __________Runoff___________ Stream and Station Probable % Maximum % Minimum % Average PrevYr CurYR % CROOKED RIVER PRINEVILLE RES INFLOW, OR MAR-JUL 112.0 61 144.0 78 79.0 43 184. 316 155 68 OCHOCO CREEK OCHOCO RES INFLOW, OR MAR-JUL 30.0 83 42.0 117 18.0 50 36. 59 WESTSIDE AND SOUTHERN OREGON BASINS May-07 Final ________________Forecast______________ __________Runoff___________ Stream and Station Probable % Maximum % Minimum % Average PrevYr CurYR % SKAGIT RIVER CONCRETE NR, WA APR-SEP 6330.0 99 7470.0 117 5200.0 82 6365. 5621 7413 134 COWLITZ RIVER MAYFIELD RES INFLOW, WA JAN-JUL 3330.0 104 4140.0 129 2520.0 78 3217. 3453 3899 123 APR-JUL 1600.0 95 2410.0 143 795.0 47 1689. 1642 3899 123 APR-SEP 1820.0 95 2620.0 136 1010.0 53 1922. 1817 3899 123 CASTLE ROCK, WA APR-SEP 2350.0 89 3460.0 131 1240.0 47 2639. 2380 6125 124 JAN-JUL 4840.0 103 5950.0 126 3720.0 79 4709. 5136 6125 124 LEWIS RIVER ARIEL, WA JAN-JUL 2390.0 102 2560.0 109 2230.0 95 2351. 2514 2930 107 MCKENZIE RIVER VIDA NR, OR APR-SEP 975.0 81 1130.0 94 825.0 69 1201. 1142 2294 107 S. SANTIAM RIVER WATERLOO, OR APR-SEP 430.0 73 600.0 102 255.0 43 587. 540 2039 109 N. SANTIAM RIVER MEHAMA, OR APR-SEP 640.0 77 845.0 101 435.0 52 834. 754 2175 111 WILLAMETTE RIVER SALEM, OR APR-SEP 3540.0 74 4570.0 95 2510.0 52 4804. 4373 14590 102 CLACKAMAS RIVER ESTACADA, OR APR-SEP 620.0 83 730.0 98 510.0 68 748. 678 1755 113 N. UMPQUA RIVER LEMOLO LAKE INFLOW, OR (1) APR-SEP 124.0 82 145.0 96 102.0 68 151. 156 139 86 JAN-JUL 150.0 83 172.0 95 129.0 71 181. 195 139 86 ROGUE RIVER RAYGOLD, OR APR-SEP 745.0 84 840.0 94 650.0 73 889. 895 1497 93 JAN-JUL 1330.0 84 1420.0 90 1230.0 78 1584. 1970 1497 93 CHEWAUCAN RIVER PAISLEY NR, OR MAR-JUL 57.0 64 80.0 90 35.0 39 89. 16 SILVIES RIVER BURNS NR, OR MAR-JUL 44.0 34 89.0 69 0.0 0 129. 196 41 38 APR-SEP 32.0 32 78.0 79 0.0 0 99. 167 41 38 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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