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Water Supply Forecasts Northwest River Forecast Center Thursday May 31, 2007 at 20:29 GMT Observed precipitation through the 28th 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 MAY UPPER COLUMBIA BASINS Jun-07 EarlyBird ________________Forecast______________ __________Runoff___________ Stream and Station Probable % Maximum % Minimum % Average PrevYr CurYR % COLUMBIA RIVER MICA RESERVOIR INFLOW, BC JAN-JUL 11000.0 114 12300.0 128 9710.0 101 9619. 9985 4671 108 FEB-SEP 14800.0 114 16100.0 124 13600.0 105 12960. 12300 4671 108 APR-SEP 14300.0 114 15500.0 124 13000.0 104 12500. 11850 4671 108 REVELSTOKE, BC JAN-JUL 15500.0 112 16600.0 120 14500.0 104 13880. 14190 6581 101 ARROW LAKES INFLOW JAN-JUL 22800.0 109 24700.0 118 20900.0 100 20960. 20790 10990 97 FEB-SEP 29000.0 110 30900.0 117 27100.0 102 26460. 24050 10990 97 APR-SEP 27500.0 110 29400.0 117 25600.0 102 25110. 22920 10990 97 BIRCHBANK, BC (1) JAN-JUL 43200.0 111 47500.0 122 39000.0 100 38930. 41180 24160 109 APR-SEP 47500.0 109 51700.0 119 43200.0 99 43500. 42860 24160 109 GRAND COULEE, WA (1) JAN-JUL 66100.0 105 72200.0 115 59900.0 95 62900. 66890 43340 106 APR-SEP 65700.0 103 71900.0 112 59500.0 93 63990. 63870 43340 106 ROCK ISLAND DAM BLO, WA (1) JAN-JUL 74400.0 108 81700.0 119 67100.0 97 68910. 71930 48450 108 APR-SEP 73600.0 106 80900.0 116 66300.0 95 69540. 68910 48450 108 THE DALLES NR, OR (1) JAN-JUL 100000.0 93 109000.0 102 90400.0 84 107300. 114700 77140 96 APR-AUG 85200.0 92 94700.0 102 75700.0 81 93090. 97540 77140 96 APR-SEP 90300.0 92 99800.0 101 80800.0 82 98650. 101700 77140 96 KOOTENAI RIVER LIBBY RES INFLOW, MT (1) JAN-JUL 7200.0 114 8320.0 132 6070.0 96 6306. 6909 4504 120 APR-AUG 7010.0 112 8140.0 130 5890.0 94 6248. 6628 4504 120 APR-SEP 7450.0 112 8580.0 129 6330.0 95 6638. 6922 4504 120 LEONIA, ID (1) APR-JUL 7610.0 108 9000.0 128 6220.0 88 7041. 7768 6228 118 APR-SEP 8780.0 108 10200.0 126 7390.0 91 8125. 8545 6228 118 BONNERS FERRY, ID APR-JUL 8020.0 105 9440.0 124 6670.0 88 7619. 8380 7097 121 KOOTENAY RIVER KOOTENAY LAKE INFLOW, BC JAN-JUL 18300.0 114 20200.0 126 16300.0 102 16010. 17210 11760 118 APR-SEP 18200.0 111 20400.0 124 16000.0 97 16450. 16790 11760 118 DUNCAN RIVER DUNCAN RESERVOIR INFLOW, BC JAN-JUL 2040.0 113 2390.0 133 1680.0 93 1800. 2033 954 108 FEB-SEP 2600.0 113 2960.0 128 2250.0 98 2305. 2361 954 108 APR-SEP 2480.0 111 2840.0 128 2130.0 96 2227. 2291 954 108 CLARK FORK BLACKFOOT RIVER ABV, MT APR-SEP 605.0 86 830.0 118 385.0 55 704. 504 567 89 MISSOULA ABV, MT APR-SEP 1400.0 88 1650.0 103 1150.0 72 1595. 1344 1283 99 MISSOULA BLO, MT APR-SEP 2620.0 88 2990.0 101 2250.0 76 2962. 2770 2432 108 ST. REGIS, MT (1) APR-SEP 3390.0 87 4130.0 106 2650.0 68 3907. 3648 3214 105 PLAINS NR, MT (1) APR-SEP 10200.0 92 11900.0 108 8560.0 77 11060. 10840 8646 107 WHITEHORSE RAPIDS, ID (1) APR-SEP 11200.0 90 13100.0 105 9330.0 75 12460. 12060 9703 103 BLACKFOOT RIVER BONNER NR, MT APR-SEP 790.0 89 875.0 98 700.0 78 892. 840 714 108 BITTERROOT RIVER AT MOUTH, MT APR-SEP 1230.0 90 1400.0 103 1050.0 77 1364. 1319 1065 112 Jun-07 EarlyBird ________________Forecast______________ __________Runoff___________ Stream and Station Probable % Maximum % Minimum % Average PrevYr CurYR % N.F. FLATHEAD RIVE COLUMBIA FALLS NR, MT APR-SEP 1820.0 101 2000.0 111 1630.0 91 1801. 1780 1494 129 M.F. FLATHEAD RIVE WEST GLACIER NR, MT APR-SEP 1660.0 95 1850.0 106 1460.0 84 1740. 1737 1356 122 S.F. FLATHEAD RIVE HUNGRY HORSE RES IN, MT (1) JAN-JUL 2240.0 101 2660.0 120 1820.0 82 2224. 2357 1763 118 APR-SEP 2010.0 95 2430.0 114 1590.0 75 2124. 2175 1763 118 UPPER/MIDDLE COLUMBIA BASINS Jun-07 EarlyBird ________________Forecast______________ __________Runoff___________ Stream and Station Probable % Maximum % Minimum % Average PrevYr CurYR % FLATHEAD RIVER COLUMBIA FALLS, MT APR-SEP 5680.0 98 6410.0 110 4940.0 85 5825. 6002 4579 118 FLATHEAD LAKE INFLOW, MT (1) APR-SEP 6510.0 97 7680.0 114 5330.0 79 6713. 7002 5484 118 PRIEST RIVER PRIEST RIVER, ID (1) APR-JUL 735.0 90 925.0 114 545.0 67 814. 997 949 108 PEND OREILLE RIVER PEND OREILLE LAKE IN, ID (1) APR-SEP 12500.0 90 14600.0 105 10500.0 75 13910. 14260 12300 110 APR-JUL 11400.0 89 13500.0 106 9330.0 73 12740. 13520 12300 110 BOX CANYON BLO, WA (1) APR-SEP 12800.0 91 14900.0 106 10700.0 76 14090. 14500 12660 110 KETTLE RIVER LAURIER NR, WA APR-SEP 1820.0 92 2080.0 105 1560.0 79 1972. 2366 1265 93 COEUR D'ALENE RIVE ENAVILLE, ID (1) APR-SEP 555.0 71 650.0 84 460.0 59 778. 871 1229 106 APR-JUL 525.0 71 620.0 84 430.0 58 739. 841 1229 106 COEUR D'ALENE LAKE IN, ID APR-JUL 1840.0 72 2120.0 83 1560.0 61 2552. 2456 3654 96 SPOKANE RIVER SPOKANE, WA (1) APR-SEP 2080.0 76 2150.0 78 2010.0 73 2744. 2705 3970 103 ST JOE RIVER CALDER, ID APR-SEP 975.0 81 1090.0 90 860.0 71 1205. 1263 1352 107 APR-JUL 915.0 81 1030.0 91 800.0 70 1136. 1203 1352 107 OKANAGAN RIVER TONASKET NR, WA (1) APR-SEP 2030.0 115 2500.0 142 1560.0 88 1766. 1470 1660 138 SIMILKAMEEN RIVER NIGHTHAWK NR, WA (1) APR-JUL 1620.0 120 1930.0 143 1300.0 96 1350. 1079 1455 164 APR-SEP 1740.0 120 2060.0 142 1430.0 99 1450. 1122 1455 164 METHOW RIVER PATEROS NR, WA (1) APR-SEP 1240.0 126 1440.0 146 1030.0 105 985. 1144 936 156 CHELAN RIVER LAKE CHELAN INFLOW, WA (1) APR-SEP 1340.0 113 1550.0 131 1130.0 95 1185. 1345 1164 148 WENATCHEE RIVER PESHASTIN, WA APR-SEP 1700.0 104 2200.0 135 1190.0 73 1635. 1669 1736 130 YAKIMA AND MAINSTEM SNAKE BASINS Jun-07 EarlyBird ________________Forecast______________ __________Runoff___________ Stream and Station Probable % Maximum % Minimum % Average PrevYr CurYR % YAKIMA RIVER KEECHELUS LAKE IN, WA (1) APR-SEP 127.0 95 150.0 113 103.0 77 133. 137 218 112 CLE ELUM, WA APR-SEP 830.0 92 960.0 106 700.0 78 903. 906 1317 118 PARKER NR, WA APR-SEP 1950.0 102 2250.0 117 1640.0 86 1918. 2346 3324 131 KACHESS RIVER KACHESS LAKE INFLOW, WA (1) APR-SEP 114.0 95 132.0 110 96.0 80 120. 122 204 120 CLE ELUM RIVER CLE ELUM LAKE INFLOW, WA (1) APR-SEP 445.0 99 505.0 113 380.0 85 448. 475 574 126 NACHES RIVER NACHES NR, WA APR-SEP 850.0 102 975.0 116 725.0 87 837. 1086 1319 146 BUMPING RIVER BUMPING LAKE INFLOW, WA (1) APR-SEP 134.0 100 162.0 121 105.0 78 134. 154 191 139 TIETON RIVER RIMROCK LAKE INFLOW, WA (1) APR-SEP 240.0 99 270.0 112 210.0 87 242. 244 324 133 AHTANUM CREEKS TAMPICO NR, WA APR-SEP 37.0 80 52.0 113 22.0 48 46. 0 SNAKE RIVER JACKSON LAKE INFLOW, WY (1) APR-JUL 555.0 68 710.0 87 400.0 49 815. 812 499 94 APR-SEP 615.0 68 770.0 85 460.0 51 904. 861 499 94 PALISADES RES INFLOW, ID (1) APR-JUL 1990.0 60 2420.0 73 1550.0 47 3331. 3267 2047 83 APR-SEP 2320.0 60 2760.0 71 1880.0 49 3875. 3672 2047 83 HEISE NR, ID APR-JUL 2150.0 60 2640.0 74 1660.0 47 3561. 3618 2374 86 APR-SEP 2510.0 60 3000.0 72 2020.0 49 4159. 4188 2374 86 SHELLEY NR, ID (1) APR-JUL 2730.0 62 3290.0 74 2180.0 49 4428. 4634 3434 91 APR-SEP 3280.0 62 3830.0 72 2730.0 51 5324. 5339 3434 91 BLACKFOOT NR, ID (1) APR-JUL 2750.0 60 3340.0 73 2160.0 47 4604. 0 AMER. FALLS RES IN, ID (1) APR-JUL 1230.0 38 2040.0 63 425.0 13 3242. 2929 3038 70 MILNER, ID APR-JUL 182.0 15 260.0 21 130.0 11 1228. 996 539 22 KING HILL, ID (1) APR-JUL 1610.0 53 2410.0 79 810.0 27 3045. 3030 3691 60 MURPHY NR, ID (1) APR-JUL 1600.0 52 2480.0 80 725.0 23 3092. 3104 3805 60 WEISER, ID (1) JAN-JUL 5070.0 52 6490.0 66 3660.0 37 9793. 12140 5881 56 APR-JUL 2780.0 48 4190.0 73 1360.0 24 5765. 8160 5881 56 APR-SEP 4160.0 58 5580.0 78 2740.0 38 7192. 9471 5881 56 BROWNLEE RES INFLOW APR-JUL 2990.0 47 4710.0 75 1270.0 20 6313. 8975 6336 56 APR-SEP 4250.0 54 5970.0 77 2530.0 32 7801. 10350 6336 56 HELLS CANYON, ID (1) APR-JUL 3070.0 47 4640.0 71 1500.0 23 6493. 9324 6576 57 APR-SEP 4460.0 56 6030.0 76 2890.0 36 7977. 10740 6576 57 LOWER GRANITE RES IN, WA (1) JAN-JUL 20700.0 69 24200.0 81 17200.0 57 30020. 32200 20000 77 FEB-SEP 21000.0 69 24600.0 81 17500.0 58 30370. 31790 20000 77 APR-JUL 14300.0 66 17900.0 83 10800.0 50 21550. 24440 20000 77 APR-SEP 16100.0 67 19700.0 82 12600.0 52 24140. 26590 20000 77 UPPER SNAKE BASINS Jun-07 EarlyBird ________________Forecast______________ __________Runoff___________ Stream and Station Probable % Maximum % Minimum % Average PrevYr CurYR % GREY'S RIVER PALISADES ABV, WY APR-SEP 245.0 62 295.0 75 197.0 50 394. 401 230 95 SALT RIVER ETNA NR, WY APR-JUL 177.0 52 235.0 69 117.0 34 342. 363 279 76 HENRYS FORK ASHTON NR, ID APR-JUL 375.0 66 445.0 78 300.0 53 571. 659 715 86 ST. ANTHONY, ID APR-JUL 445.0 61 555.0 76 335.0 46 734. 819 965 95 REXBURG NR, ID APR-JUL 945.0 61 1120.0 72 770.0 49 1559. 1016 1220 71 FALLS RIVER SQUIRREL NR, ID (1) APR-JUL 240.0 62 295.0 76 183.0 47 386. 370 254 72 TETON RIVER ST. ANTHONY NR, ID APR-JUL 265.0 66 340.0 84 189.0 47 403. 464 329 99 BIG LOST RIVER MACKAY RESERVOIR INFLOW, ID APR-JUL 74.0 52 114.0 80 34.0 24 142. 229 97 82 WILLOW CREEK RIRIE RESERVOIR INFLOW APR-JUL 24.0 28 50.0 58 0.0 0 86. 94 39 43 PORTNEUF RIVER TOPAZ, ID APR-SEP 49.0 52 61.0 64 37.0 39 95. 120 73 69 GOOSE CREEK OAKLEY RES INFLOW, ID APR-JUL 18.0 62 24.0 83 12.4 43 29. 0 BIG WOOD RIVER HAILEY, ID (1) APR-JUL 126.0 49 200.0 78 50.0 20 256. 431 141 78 MAGIC RESERVOIR INFLOW, ID APR-JUL 66.0 23 117.0 40 14.7 5 291. 591 109 42 LITTLE WOOD RIVER CAREY NR, ID APR-JUL 17.2 20 34.0 39 0.1 0 87. 163 34 40 MIDDLE SNAKE BASINS Jun-07 EarlyBird ________________Forecast______________ __________Runoff___________ Stream and Station Probable % Maximum % Minimum % Average PrevYr CurYR % BRUNEAU RIVER HOT SPRING NR, ID APR-JUL 107.0 51 151.0 73 63.0 30 208. 276 119 59 OWYHEE RIVER OWYHEE RES INFLOW, OR MAR-JUL 143.0 23 210.0 34 78.0 13 613. 1050 265 36 OWYHEE RES OUTFLOW APR-JUL 36.0 17 44.0 20 29.0 13 217. 594 59 17 BOISE RIVER TWIN SPRINGS NR, ID (1) APR-JUL 385.0 61 485.0 76 285.0 45 636. 828 449 79 BOISE NR, ID (1) APR-JUL 755.0 53 985.0 70 520.0 37 1414. 2060 992 71 PARMA NR, ID APR-JUL 109.0 18 225.0 38 78.0 13 593. 1102 362 37 S.F. BOISE RIVER ANDERSON RNCH RES IN, ID (1) APR-JUL 265.0 49 370.0 68 165.0 30 542. 816 319 68 MALHEUR RIVER DREWSEY NR, OR MAR-JUL 40.0 36 45.0 41 35.0 32 110. 239 65 46 N.F. MALHEUR RIVER BEULAH RES INFLOW, OR (1) MAR-JUL 22.0 27 26.0 32 18.4 23 81. 155 39 42 PAYETTE RIVER HORSESHOE BEND NR, ID (1) APR-JUL 1080.0 67 1410.0 87 760.0 47 1617. 2214 1324 85 EMMETT NR, ID APR-JUL 825.0 66 1180.0 95 480.0 39 1246. 1977 952 66 DEADWOOD RIVER DEADWOOD RES INFLOW, ID (1) APR-JUL 105.0 78 129.0 96 81.0 60 134. 180 108 106 N.F. PAYETTE RIVER CASCADE RES INFLOW, ID (1) APR-JUL 340.0 69 435.0 88 240.0 48 495. 684 436 88 WEISER RIVER WEISER NR, ID (1) APR-JUL 149.0 38 275.0 70 24.0 6 391. 717 308 46 BURNT RIVER HEREFORD NR, OR MAR-JUL 19.2 38 23.0 45 15.8 31 51. 81 31 49 LOWER SNAKE AND CENTRAL OREGON BASINS Jun-07 EarlyBird ________________Forecast______________ __________Runoff___________ Stream and Station Probable % Maximum % Minimum % Average PrevYr CurYR % POWDER RIVER SUMPTER NR, OR MAR-JUL 37.0 53 46.0 66 27.0 39 70. 90 IMNAHA RIVER IMNAHA, OR MAR-JUL 199.0 66 240.0 80 156.0 52 301. 394 192 78 SALMON RIVER SALMON, ID (1) APR-JUL 670.0 78 955.0 111 385.0 45 857. 1078 835 108 WHITEBIRD, ID (1) JAN-JUL 5190.0 76 6190.0 91 4190.0 62 6805. 7274 4445 99 APR-JUL 4270.0 73 5270.0 90 3270.0 56 5851. 6441 4445 99 GRANDE RONDE RIVER LA GRANDE, OR MAR-JUL 132.0 53 150.0 60 113.0 45 249. 238 178 63 APR-JUL 78.0 42 97.0 53 59.0 32 184. 202 178 63 TROY, OR (1) MAR-JUL 1020.0 65 1420.0 90 630.0 40 1578. 1573 1326 78 APR-JUL 740.0 58 1140.0 89 345.0 27 1274. 1369 1326 78 CLEARWATER RIVER OROFINO, ID (1) APR-JUL 3700.0 80 4760.0 102 2650.0 57 4645. 4316 4209 97 SPALDING, ID (1) JAN-JUL 8200.0 85 9660.0 100 6740.0 70 9683. 9175 7685 99 APR-JUL 5840.0 79 7300.0 98 4380.0 59 7435. 7274 7685 99 APR-SEP 6190.0 79 7650.0 97 4730.0 60 7849. 7550 7685 99 N.F. CLEARWATER RI DWORSHAK RES INFLOW, ID (1) JAN-JUL 3000.0 85 3440.0 97 2570.0 72 3547. 3507 3004 99 APR-JUL 2060.0 78 2490.0 94 1620.0 61 2644. 2676 3004 99 APR-SEP 2190.0 78 2620.0 93 1750.0 62 2803. 2786 3004 99 S.F. WALLA WALLA R MILTON NR, OR APR-JUL 38.0 72 46.0 87 30.0 57 53. 63 102 107 UMATILLA RIVER GIBBON NR, OR APR-JUL 40.0 55 50.0 68 30.0 41 73. 86 140 93 PENDLETON, OR APR-JUL 70.0 47 86.0 58 54.0 36 149. 178 308 88 M.F. JOHN DAY RIVE RITTER, OR (1) MAR-JUL 78.0 49 95.0 59 60.0 38 160. 0 APR-JUL 60.0 49 77.0 63 42.0 34 123. 0 N.F. JOHN DAY RIVE MONUMENT NR, OR APR-JUL 315.0 53 400.0 67 230.0 39 597. 745 693 76 JOHN DAY RIVER SERVICE CREEK, OR (1) MAR-SEP 720.0 62 1010.0 88 435.0 38 1153. 1235 927 69 APR-SEP 455.0 53 740.0 86 170.0 20 865. 1038 927 69 DESCHUTES RIVER BENHAM FALLS, OR APR-SEP 475.0 90 500.0 95 450.0 85 528. 497 627 95 Jun-07 EarlyBird ________________Forecast______________ __________Runoff___________ Stream and Station Probable % Maximum % Minimum % Average PrevYr CurYR % CROOKED RIVER PRINEVILLE RES INFLOW, OR MAR-JUL 116.0 63 129.0 70 104.0 57 184. 316 175 67 OCHOCO CREEK OCHOCO RES INFLOW, OR MAR-JUL 22.0 61 26.0 72 18.2 51 36. 59 WESTSIDE AND SOUTHERN OREGON BASINS Jun-07 EarlyBird ________________Forecast______________ __________Runoff___________ Stream and Station Probable % Maximum % Minimum % Average PrevYr CurYR % SKAGIT RIVER CONCRETE NR, WA APR-SEP 6420.0 101 7560.0 119 5290.0 83 6365. 5621 8916 127 COWLITZ RIVER MAYFIELD RES INFLOW, WA JAN-JUL 3200.0 99 3990.0 124 2410.0 75 3217. 3453 4314 116 APR-JUL 1480.0 88 2270.0 134 685.0 41 1689. 1642 4314 116 APR-SEP 1680.0 87 2470.0 129 885.0 46 1922. 1817 4314 116 CASTLE ROCK, WA APR-SEP 2150.0 81 3240.0 123 1060.0 40 2639. 2380 6595 117 JAN-JUL 4650.0 99 5740.0 122 3560.0 76 4709. 5136 6595 117 LEWIS RIVER ARIEL, WA JAN-JUL 2340.0 100 2460.0 105 2230.0 95 2351. 2514 3118 102 MCKENZIE RIVER VIDA NR, OR APR-SEP 950.0 79 1030.0 86 870.0 72 1201. 1142 2513 102 S. SANTIAM RIVER WATERLOO, OR APR-SEP 395.0 67 505.0 86 285.0 49 587. 540 2146 104 N. SANTIAM RIVER MEHAMA, OR APR-SEP 600.0 72 730.0 88 475.0 57 834. 754 2316 106 WILLAMETTE RIVER SALEM, OR APR-SEP 3370.0 70 3960.0 82 2780.0 58 4804. 4373 15460 99 CLACKAMAS RIVER ESTACADA, OR APR-SEP 560.0 75 650.0 87 475.0 64 748. 678 1896 108 N. UMPQUA RIVER LEMOLO LAKE INFLOW, OR (1) APR-SEP 108.0 72 129.0 85 86.0 57 151. 156 149 77 JAN-JUL 137.0 76 159.0 88 116.0 64 181. 195 149 77 ROGUE RIVER RAYGOLD, OR APR-SEP 710.0 80 770.0 87 645.0 73 889. 895 1658 90 JAN-JUL 1290.0 81 1350.0 85 1230.0 78 1584. 1970 1658 90 CHEWAUCAN RIVER PAISLEY NR, OR MAR-JUL 52.0 58 74.0 83 29.0 33 89. 16 SILVIES RIVER BURNS NR, OR MAR-JUL 35.0 27 81.0 63 0.0 0 129. 196 49 34 APR-SEP 23.0 23 69.0 70 0.0 0 99. 167 49 34 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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