# //UNITED STATES GEOLOGICAL SURVEY http://water.usgs.gov/ # //NATIONAL WATER INFORMATION SYSTEM http://water.usgs.gov/data.html # //DATA ARE PROVISIONAL AND SUBJECT TO CHANGE UNTIL PUBLISHED BY USGS # //RETRIEVED: 2026-07-23 19:30:02 # //WARNING # //WARNING The stage-discharge rating provided in this file should be # //WARNING considered provisional and subject to change. Stage-discharge # //WARNING ratings change over time as the channel features that control # //WARNING the relation between stage and discharge vary. Users are # //WARNING cautioned to consider carefully the applicability of this # //WARNING rating before using it for decisions that concern personal or # //WARNING public safety or operational consequences. # //FILE TYPE="NWIS RATING" # //DATABASE NUMBER=01 DESCRIPTION=" Standard data base for this site." # //STATION AGENCY="USGS " NUMBER="06019500 " TIME_ZONE="MST" DST_FLAG=Y # //STATION NAME="Ruby River above reservoir near Alder, MT" # //LABEL="Discharge (ft^3/s)" # //PARAMETER CODE="00060" # //RATING SHIFTED="20260723193002 MST" # //RATING ID="16.2" TYPE="STGQ" NAME="stage-discharge" AGING=???? # //RATING REMARKS="Rating created in 2026 to address negative shifting pattern on lower end of Rating. Appears clear Qms started plotting to the left beginning mid-2023. Most weight placed in clear Qms from the past few years. " # //RATING EXPANSION="logarithmic" # //RATING BREAKPOINT1=3.300000E+00 # //RATING OFFSET1=1.380000E+00 OFFSET2=2.570000E+00 # //RATING_INDEP ROUNDING="????" PARAMETER="Gage height (ft)" # //RATING_DEP ROUNDING="????" PARAMETER="Discharge (ft^3/s)" # //RATING_DATETIME BEGIN=20260626103700 BZONE=-07:00 END=-------------- EZONE=--- AGING=Working # //SHIFT_PREV BEGIN="20260626103701" BZONE="-07:00" END="--------------" EZONE="---" # //SHIFT_PREV STAGE1="3.00" SHIFT1="-0.04" STAGE2="3.30" SHIFT2="0.00" STAGE3="4.50" SHIFT3="0.00" # //SHIFT_PREV COMMENT="First implementation of new Rating 16.2 (final shift from Rating 16.1 in 2026). Was previously -0.12 and 0 " # //SHIFT_NEXT BEGIN="--------------" BZONE="---" END="--------------" EZONE="---" # //SHIFT_NEXT STAGE1="---" SHIFT1="---" STAGE2="---" SHIFT2="---" STAGE3="---" SHIFT3="---" # //SHIFT_NEXT COMMENT=" " INDEP SHIFT DEP STOR 16N 16N 16N 1S 2.59 -0.04 29.25 2.60 -0.04 31.45 2.61 -0.04 33.79 2.62 -0.04 36.29 2.63 -0.04 38.94 * 2.64 -0.04 41.77 2.65 -0.04 44.78 2.66 -0.04 47.98 2.67 -0.04 51.37 2.68 -0.04 53.62 2.69 -0.04 55.06 2.70 -0.04 56.53 2.71 -0.04 58.02 2.72 -0.04 59.54 2.73 -0.04 61.09 2.74 -0.04 62.67 2.75 -0.04 64.27 2.76 -0.04 65.91 2.77 -0.04 67.57 2.78 -0.04 69.26 2.79 -0.04 70.99 2.80 -0.04 72.74 2.81 -0.04 74.52 2.82 -0.04 76.33 2.83 -0.04 78.17 2.84 -0.04 80.05 2.85 -0.04 81.95 2.86 -0.04 83.89 2.87 -0.04 85.86 2.88 -0.04 87.86 2.89 -0.04 89.89 2.90 -0.04 91.96 2.91 -0.04 94.05 2.92 -0.04 96.19 2.93 -0.04 98.35 2.94 -0.04 100.55 2.95 -0.04 102.79 2.96 -0.04 105.06 2.97 -0.04 107.36 2.98 -0.04 109.70 2.99 -0.04 112.07 3.00 -0.04 114.48 3.01 -0.04 117.26 3.02 -0.04 120.08 3.03 -0.04 122.95 3.04 -0.03 125.87 3.05 -0.03 128.83 3.06 -0.03 131.85 3.07 -0.03 134.91 3.08 -0.03 138.03 3.09 -0.03 141.19 3.10 -0.03 144.40 3.11 -0.03 147.67 3.12 -0.02 150.98 3.13 -0.02 154.35 3.14 -0.02 157.77 3.15 -0.02 161.24 3.16 -0.02 164.77 3.17 -0.02 168.35 3.18 -0.02 171.99 3.19 -0.01 175.67 3.20 -0.01 179.42 3.21 -0.01 183.22 3.22 -0.01 187.07 3.23 -0.01 190.99 3.24 -0.01 194.96 3.25 -0.01 198.98 3.26 -0.01 203.07 3.27 0.00 207.21 3.28 0.00 211.42 3.29 0.00 215.68 3.30 0.00 220.00 * 3.31 0.00 223.55 3.32 0.00 227.11 3.33 0.00 230.67 3.34 0.00 234.25 3.35 0.00 237.83 3.36 0.00 241.42 3.37 0.00 245.02 3.38 0.00 248.63 3.39 0.00 252.24 3.40 0.00 255.87 3.41 0.00 259.50 3.42 0.00 263.13 3.43 0.00 266.78 3.44 0.00 270.43 3.45 0.00 274.09 3.46 0.00 277.76 3.47 0.00 281.43 3.48 0.00 285.12 3.49 0.00 288.81 3.50 0.00 292.50 3.51 0.00 296.21 3.52 0.00 299.92 3.53 0.00 303.63 3.54 0.00 307.36 3.55 0.00 311.09 3.56 0.00 314.83 3.57 0.00 318.57 3.58 0.00 322.32 3.59 0.00 326.08 3.60 0.00 329.84 3.61 0.00 333.61 3.62 0.00 337.39 3.63 0.00 341.17 3.64 0.00 344.96 3.65 0.00 348.76 3.66 0.00 352.56 3.67 0.00 356.37 3.68 0.00 360.18 3.69 0.00 364.00 3.70 0.00 367.83 3.71 0.00 371.66 3.72 0.00 375.50 3.73 0.00 379.34 3.74 0.00 383.19 3.75 0.00 387.05 3.76 0.00 390.91 3.77 0.00 394.78 3.78 0.00 398.65 3.79 0.00 402.53 3.80 0.00 406.41 3.81 0.00 410.30 3.82 0.00 414.20 3.83 0.00 418.10 3.84 0.00 422.00 3.85 0.00 425.91 3.86 0.00 429.83 3.87 0.00 433.75 3.88 0.00 437.68 3.89 0.00 441.61 3.90 0.00 445.55 3.91 0.00 449.50 3.92 0.00 453.44 3.93 0.00 457.40 3.94 0.00 461.36 3.95 0.00 465.32 3.96 0.00 469.29 3.97 0.00 473.26 3.98 0.00 477.24 3.99 0.00 481.23 4.00 0.00 485.22 4.01 0.00 489.21 4.02 0.00 493.21 4.03 0.00 497.21 4.04 0.00 501.22 4.05 0.00 505.24 4.06 0.00 509.25 4.07 0.00 513.28 4.08 0.00 517.30 4.09 0.00 521.34 4.10 0.00 525.37 4.11 0.00 529.42 4.12 0.00 533.46 4.13 0.00 537.51 4.14 0.00 541.57 4.15 0.00 545.63 4.16 0.00 549.69 4.17 0.00 553.76 4.18 0.00 557.84 4.19 0.00 561.91 4.20 0.00 566.00 4.21 0.00 570.08 4.22 0.00 574.18 4.23 0.00 578.27 4.24 0.00 582.37 4.25 0.00 586.48 4.26 0.00 590.58 4.27 0.00 594.70 4.28 0.00 598.81 4.29 0.00 602.94 4.30 0.00 607.06 4.31 0.00 611.19 4.32 0.00 615.33 4.33 0.00 619.46 4.34 0.00 623.61 4.35 0.00 627.75 4.36 0.00 631.90 4.37 0.00 636.06 4.38 0.00 640.22 4.39 0.00 644.38 4.40 0.00 648.55 4.41 0.00 652.72 4.42 0.00 656.89 4.43 0.00 661.07 4.44 0.00 665.26 4.45 0.00 669.44 4.46 0.00 673.63 4.47 0.00 677.83 4.48 0.00 682.03 4.49 0.00 686.23 4.50 0.00 690.44 4.51 0.00 694.65 4.52 0.00 698.86 4.53 0.00 703.08 4.54 0.00 707.30 4.55 0.00 711.53 4.56 0.00 715.75 4.57 0.00 719.99 4.58 0.00 724.22 4.59 0.00 728.46 4.60 0.00 732.71 4.61 0.00 736.96 4.62 0.00 741.21 4.63 0.00 745.46 4.64 0.00 749.72 4.65 0.00 753.98 4.66 0.00 758.25 4.67 0.00 762.52 4.68 0.00 766.79 4.69 0.00 771.07 4.70 0.00 775.35 4.71 0.00 779.63 4.72 0.00 783.92 4.73 0.00 788.21 4.74 0.00 792.51 4.75 0.00 796.80 4.76 0.00 801.11 4.77 0.00 805.41 4.78 0.00 809.72 4.79 0.00 814.03 4.80 0.00 818.35 4.81 0.00 822.67 4.82 0.00 826.99 4.83 0.00 831.31 4.84 0.00 835.64 4.85 0.00 839.97 4.86 0.00 844.31 4.87 0.00 848.65 4.88 0.00 852.99 4.89 0.00 857.34 4.90 0.00 861.68 4.91 0.00 866.04 4.92 0.00 870.39 4.93 0.00 874.75 4.94 0.00 879.11 4.95 0.00 883.48 4.96 0.00 887.85 4.97 0.00 892.22 4.98 0.00 896.59 4.99 0.00 900.97 5.00 0.00 905.35 5.01 0.00 909.74 5.02 0.00 914.12 5.03 0.00 918.51 5.04 0.00 922.91 5.05 0.00 927.31 5.06 0.00 931.71 5.07 0.00 936.11 5.08 0.00 940.51 5.09 0.00 944.92 5.10 0.00 949.34 5.11 0.00 953.75 5.12 0.00 958.17 5.13 0.00 962.59 5.14 0.00 967.02 5.15 0.00 971.45 5.16 0.00 975.88 5.17 0.00 980.31 5.18 0.00 984.75 5.19 0.00 989.19 5.20 0.00 993.63 5.21 0.00 998.08 5.22 0.00 1002.52 5.23 0.00 1006.98 5.24 0.00 1011.43 5.25 0.00 1015.89 5.26 0.00 1020.35 5.27 0.00 1024.81 5.28 0.00 1029.28 5.29 0.00 1033.75 5.30 0.00 1038.22 5.31 0.00 1042.70 5.32 0.00 1047.17 5.33 0.00 1051.66 5.34 0.00 1056.14 5.35 0.00 1060.63 5.36 0.00 1065.12 5.37 0.00 1069.61 5.38 0.00 1074.10 5.39 0.00 1078.60 5.40 0.00 1083.10 5.41 0.00 1087.60 5.42 0.00 1092.11 5.43 0.00 1096.62 5.44 0.00 1101.13 5.45 0.00 1105.65 5.46 0.00 1110.16 5.47 0.00 1114.68 5.48 0.00 1119.21 5.49 0.00 1123.73 5.50 0.00 1128.26 5.51 0.00 1132.79 5.52 0.00 1137.33 5.53 0.00 1141.86 5.54 0.00 1146.40 5.55 0.00 1150.95 5.56 0.00 1155.49 5.57 0.00 1160.04 5.58 0.00 1164.59 5.59 0.00 1169.14 5.60 0.00 1173.70 5.61 0.00 1178.25 5.62 0.00 1182.81 5.63 0.00 1187.38 5.64 0.00 1191.94 5.65 0.00 1196.51 5.66 0.00 1201.08 5.67 0.00 1205.66 5.68 0.00 1210.23 5.69 0.00 1214.81 5.70 0.00 1219.39 5.71 0.00 1223.98 5.72 0.00 1228.57 5.73 0.00 1233.15 5.74 0.00 1237.75 5.75 0.00 1242.34 5.76 0.00 1246.94 5.77 0.00 1251.54 5.78 0.00 1256.14 5.79 0.00 1260.74 5.80 0.00 1265.35 5.81 0.00 1269.96 5.82 0.00 1274.57 5.83 0.00 1279.19 5.84 0.00 1283.81 5.85 0.00 1288.42 5.86 0.00 1293.05 5.87 0.00 1297.67 5.88 0.00 1302.30 5.89 0.00 1306.93 5.90 0.00 1311.56 5.91 0.00 1316.19 5.92 0.00 1320.83 5.93 0.00 1325.47 5.94 0.00 1330.11 5.95 0.00 1334.76 5.96 0.00 1339.40 5.97 0.00 1344.05 5.98 0.00 1348.70 5.99 0.00 1353.36 6.00 0.00 1358.01 6.01 0.00 1362.67 6.02 0.00 1367.33 6.03 0.00 1372.00 6.04 0.00 1376.66 6.05 0.00 1381.33 6.06 0.00 1386.00 6.07 0.00 1390.68 6.08 0.00 1395.35 6.09 0.00 1400.03 6.10 0.00 1404.71 6.11 0.00 1409.39 6.12 0.00 1414.07 6.13 0.00 1418.76 6.14 0.00 1423.45 6.15 0.00 1428.14 6.16 0.00 1432.84 6.17 0.00 1437.53 6.18 0.00 1442.23 6.19 0.00 1446.93 6.20 0.00 1451.64 6.21 0.00 1456.34 6.22 0.00 1461.05 6.23 0.00 1465.76 6.24 0.00 1470.47 6.25 0.00 1475.19 6.26 0.00 1479.90 6.27 0.00 1484.62 6.28 0.00 1489.34 6.29 0.00 1494.07 6.30 0.00 1498.79 6.31 0.00 1503.52 6.32 0.00 1508.25 6.33 0.00 1512.98 6.34 0.00 1517.72 6.35 0.00 1522.45 6.36 0.00 1527.19 6.37 0.00 1531.93 6.38 0.00 1536.68 6.39 0.00 1541.42 6.40 0.00 1546.17 6.41 0.00 1550.92 6.42 0.00 1555.67 6.43 0.00 1560.43 6.44 0.00 1565.18 6.45 0.00 1569.94 6.46 0.00 1574.70 6.47 0.00 1579.47 6.48 0.00 1584.23 6.49 0.00 1589.00 *