# //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: 2026-02-26 23:00:02 # //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="01645762 " TIME_ZONE="EST" DST_FLAG=Y # //STATION NAME="S F LITTLE DIFFICULT RUN ABOVE MOUTH NR VIENNA, VA" # //LABEL="Discharge (ft^3/s)" # //PARAMETER CODE="00060" # //RATING SHIFTED="20260226230002 EST" # //RATING ID="4.0" TYPE="STGQ" NAME="stage-discharge" AGING=???? # //RATING REMARKS="Modified lower-end based on recent GHZF. Lower-end based also on nos. 48-56, upper-end based on slope-area measurements, and used the surveyd elevations to define the transition to over banks." # //RATING EXPANSION="logarithmic" # //RATING OFFSET1=-5.000000E-02 # //RATING_INDEP ROUNDING="????" PARAMETER="Gage height (ft)" # //RATING_DEP ROUNDING="????" PARAMETER="Discharge (ft^3/s)" # //RATING_DATETIME BEGIN=20130130193501 BZONE=-05:00 END=20161018230000 EZONE=-05:00 AGING=1 # //RATING_DATETIME COMMENT="Modified lower-end based on recent GHZF. Lower-end based also on nos. 48-56, upper-end based on slope-area measurements, and used the surveyd elevations to define the transition to over banks." # //RATING_DATETIME BEGIN=20161018230000 BZONE=-05:00 END=20170404230000 EZONE=-05:00 AGING=1 # //RATING_DATETIME COMMENT="Modified lower-end based on recent GHZF. Lower-end based also on nos. 48-56, upper-end based on slope-area measurements, and used the surveyd elevations to define the transition to over banks." # //RATING_DATETIME BEGIN=20170404230000 BZONE=-05:00 END=-------------- EZONE=--- AGING=1 # //RATING_DATETIME COMMENT="Modified lower-end based on recent GHZF. Lower-end based also on nos. 48-56, upper-end based on slope-area measurements, and used the surveyd elevations to define the transition to over banks." # //SHIFT_PREV BEGIN="20260226110551" BZONE="-05:00" END="--------------" EZONE="---" # //SHIFT_PREV STAGE1="0.10" SHIFT1="0.03" STAGE2="0.90" SHIFT2="0.03" STAGE3="2.10" SHIFT3="0.00" # //SHIFT_PREV COMMENT="Temp shift to meas. 145" # //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 0.02 0.03 0.08 0.03 0.03 0.10 0.04 0.03 0.12 0.05 0.03 0.15 * 0.06 0.03 0.18 0.07 0.03 0.22 0.08 0.03 0.25 0.09 0.03 0.29 0.10 0.03 0.34 0.11 0.03 0.38 0.12 0.03 0.43 0.13 0.03 0.49 0.14 0.03 0.55 0.15 0.03 0.61 0.16 0.03 0.68 0.17 0.03 0.75 0.18 0.03 0.82 0.19 0.03 0.90 0.20 0.03 0.99 0.21 0.03 1.08 0.22 0.03 1.17 0.23 0.03 1.27 0.24 0.03 1.37 0.25 0.03 1.48 0.26 0.03 1.59 0.27 0.03 1.70 0.28 0.03 1.83 0.29 0.03 1.95 0.30 0.03 2.08 0.31 0.03 2.22 0.32 0.03 2.36 0.33 0.03 2.51 0.34 0.03 2.66 0.35 0.03 2.82 0.36 0.03 2.98 0.37 0.03 3.15 0.38 0.03 3.32 0.39 0.03 3.50 0.40 0.03 3.68 0.41 0.03 3.88 0.42 0.03 4.07 0.43 0.03 4.27 0.44 0.03 4.48 0.45 0.03 4.69 0.46 0.03 4.91 0.47 0.03 5.14 0.48 0.03 5.37 0.49 0.03 5.61 0.50 0.03 5.85 0.51 0.03 6.10 0.52 0.03 6.35 0.53 0.03 6.62 0.54 0.03 6.88 0.55 0.03 7.16 0.56 0.03 7.44 0.57 0.03 7.73 0.58 0.03 8.02 0.59 0.03 8.32 0.60 0.03 8.63 0.61 0.03 8.94 0.62 0.03 9.26 0.63 0.03 9.58 0.64 0.03 9.92 0.65 0.03 10.26 0.66 0.03 10.60 0.67 0.03 10.96 0.68 0.03 11.32 0.69 0.03 11.68 0.70 0.03 12.06 0.71 0.03 12.44 0.72 0.03 12.83 0.73 0.03 13.22 0.74 0.03 13.62 0.75 0.03 14.03 0.76 0.03 14.45 0.77 0.03 14.87 0.78 0.03 15.30 0.79 0.03 15.74 0.80 0.03 16.19 0.81 0.03 16.64 0.82 0.03 17.10 0.83 0.03 17.57 0.84 0.03 18.04 0.85 0.03 18.53 0.86 0.03 19.02 0.87 0.03 19.51 0.88 0.03 20.02 0.89 0.03 20.53 0.90 0.03 21.05 0.91 0.03 21.57 0.92 0.03 22.09 0.93 0.03 22.62 0.94 0.03 23.16 0.95 0.03 23.70 0.96 0.03 24.25 0.97 0.03 24.81 0.98 0.03 25.38 0.99 0.03 25.96 1.00 0.03 26.54 1.01 0.03 27.13 1.02 0.03 27.73 1.03 0.03 28.33 1.04 0.03 28.95 1.05 0.03 29.57 1.06 0.03 30.20 1.07 0.03 30.83 1.08 0.03 31.48 1.09 0.03 32.13 1.10 0.02 32.79 1.11 0.02 33.46 1.12 0.02 34.13 1.13 0.02 34.82 1.14 0.02 35.51 1.15 0.02 36.21 1.16 0.02 36.92 1.17 0.02 37.64 1.18 0.02 38.36 1.19 0.02 39.09 1.20 0.02 39.83 1.21 0.02 40.58 1.22 0.02 41.34 1.23 0.02 42.11 1.24 0.02 42.88 1.25 0.02 43.66 1.26 0.02 44.46 1.27 0.02 45.25 1.28 0.02 46.06 1.29 0.02 46.88 1.30 0.02 47.70 1.31 0.02 48.54 1.32 0.02 49.38 1.33 0.02 50.23 1.34 0.02 51.09 1.35 0.02 51.95 1.36 0.02 52.83 1.37 0.02 53.72 1.38 0.02 54.61 1.39 0.02 55.51 1.40 0.02 56.42 1.41 0.02 57.34 1.42 0.02 58.27 1.43 0.02 59.21 1.44 0.02 60.15 1.45 0.02 61.11 1.46 0.02 62.07 1.47 0.02 63.05 1.48 0.02 64.03 1.49 0.02 65.02 1.50 0.02 66.02 1.51 0.01 67.03 1.52 0.01 68.04 1.53 0.01 69.07 1.54 0.01 70.11 1.55 0.01 71.15 1.56 0.01 72.21 1.57 0.01 73.27 1.58 0.01 74.34 1.59 0.01 75.42 1.60 0.01 76.51 1.61 0.01 77.61 1.62 0.01 78.72 1.63 0.01 79.84 1.64 0.01 80.97 1.65 0.01 82.11 1.66 0.01 83.26 1.67 0.01 84.41 1.68 0.01 85.58 1.69 0.01 86.75 1.70 0.01 87.94 1.71 0.01 89.13 1.72 0.01 90.34 1.73 0.01 91.55 1.74 0.01 92.77 1.75 0.01 94.00 1.76 0.01 95.25 1.77 0.01 96.50 1.78 0.01 97.76 1.79 0.01 99.03 1.80 0.01 100.31 1.81 0.01 101.60 1.82 0.01 102.90 1.83 0.01 104.21 1.84 0.01 105.53 1.85 0.01 106.86 1.86 0.01 108.20 1.87 0.01 109.55 1.88 0.01 110.91 1.89 0.01 112.28 1.90 0.00 113.66 1.91 0.00 115.05 1.92 0.00 116.45 1.93 0.00 117.85 1.94 0.00 119.27 1.95 0.00 120.70 1.96 0.00 122.14 1.97 0.00 123.59 1.98 0.00 125.05 1.99 0.00 126.52 2.00 0.00 128.00 2.01 0.00 129.49 2.02 0.00 130.99 2.03 0.00 132.50 2.04 0.00 134.02 2.05 0.00 135.55 2.06 0.00 137.09 2.07 0.00 138.64 2.08 0.00 140.20 2.09 0.00 141.77 2.10 0.00 143.36 2.11 0.00 144.99 2.12 0.00 146.63 2.13 0.00 148.29 2.14 0.00 149.96 2.15 0.00 151.63 2.16 0.00 153.32 2.17 0.00 155.02 2.18 0.00 156.73 2.19 0.00 158.45 2.20 0.00 160.19 2.21 0.00 161.93 2.22 0.00 163.69 2.23 0.00 165.45 2.24 0.00 167.23 2.25 0.00 169.02 2.26 0.00 170.82 2.27 0.00 172.63 2.28 0.00 174.45 2.29 0.00 176.28 2.30 0.00 178.13 2.31 0.00 179.99 2.32 0.00 181.85 2.33 0.00 183.73 2.34 0.00 185.62 2.35 0.00 187.53 2.36 0.00 189.44 2.37 0.00 191.36 2.38 0.00 193.30 2.39 0.00 195.25 2.40 0.00 197.21 2.41 0.00 199.18 2.42 0.00 201.16 2.43 0.00 203.16 2.44 0.00 205.16 2.45 0.00 207.18 2.46 0.00 209.21 2.47 0.00 211.25 2.48 0.00 213.30 2.49 0.00 215.37 2.50 0.00 217.44 2.51 0.00 219.53 2.52 0.00 221.63 2.53 0.00 223.74 2.54 0.00 225.87 2.55 0.00 228.00 2.56 0.00 230.15 2.57 0.00 232.31 2.58 0.00 234.48 2.59 0.00 236.66 2.60 0.00 238.86 2.61 0.00 241.06 2.62 0.00 243.28 2.63 0.00 245.51 2.64 0.00 247.76 2.65 0.00 250.01 2.66 0.00 252.28 2.67 0.00 254.56 2.68 0.00 256.85 2.69 0.00 259.15 2.70 0.00 261.47 2.71 0.00 263.79 2.72 0.00 266.13 2.73 0.00 268.49 2.74 0.00 270.85 2.75 0.00 273.23 2.76 0.00 275.61 2.77 0.00 278.02 2.78 0.00 280.43 2.79 0.00 282.85 2.80 0.00 285.29 2.81 0.00 287.74 2.82 0.00 290.21 2.83 0.00 292.68 2.84 0.00 295.17 2.85 0.00 297.67 2.86 0.00 300.18 2.87 0.00 302.71 2.88 0.00 305.24 2.89 0.00 307.79 2.90 0.00 310.36 2.91 0.00 312.93 2.92 0.00 315.52 2.93 0.00 318.12 2.94 0.00 320.73 2.95 0.00 323.36 2.96 0.00 325.99 2.97 0.00 328.64 2.98 0.00 331.31 2.99 0.00 333.98 3.00 0.00 336.67 3.01 0.00 339.37 3.02 0.00 342.09 3.03 0.00 344.82 3.04 0.00 347.56 3.05 0.00 350.31 3.06 0.00 353.07 3.07 0.00 355.85 3.08 0.00 358.64 3.09 0.00 361.45 3.10 0.00 364.26 3.11 0.00 367.09 3.12 0.00 369.94 3.13 0.00 372.79 3.14 0.00 375.66 3.15 0.00 378.54 3.16 0.00 381.44 3.17 0.00 384.35 3.18 0.00 387.27 3.19 0.00 390.20 3.20 0.00 393.15 3.21 0.00 396.11 3.22 0.00 399.08 3.23 0.00 402.07 3.24 0.00 405.07 3.25 0.00 408.08 3.26 0.00 411.11 3.27 0.00 414.15 3.28 0.00 417.20 3.29 0.00 420.26 3.30 0.00 423.34 3.31 0.00 426.44 3.32 0.00 429.54 3.33 0.00 432.66 3.34 0.00 435.79 3.35 0.00 438.94 3.36 0.00 442.10 3.37 0.00 445.27 3.38 0.00 448.45 3.39 0.00 451.65 3.40 0.00 454.87 3.41 0.00 458.09 3.42 0.00 461.33 3.43 0.00 464.58 3.44 0.00 467.85 3.45 0.00 471.13 3.46 0.00 474.42 3.47 0.00 477.73 3.48 0.00 481.05 3.49 0.00 484.38 3.50 0.00 487.73 3.51 0.00 491.09 3.52 0.00 494.47 3.53 0.00 497.86 3.54 0.00 501.26 3.55 0.00 504.68 3.56 0.00 508.11 3.57 0.00 511.55 3.58 0.00 515.01 3.59 0.00 518.48 3.60 0.00 521.96 3.61 0.00 525.46 3.62 0.00 528.97 3.63 0.00 532.50 3.64 0.00 536.04 3.65 0.00 539.59 3.66 0.00 543.16 3.67 0.00 546.74 3.68 0.00 550.34 3.69 0.00 553.95 3.70 0.00 557.57 3.71 0.00 561.21 3.72 0.00 564.86 3.73 0.00 568.52 3.74 0.00 572.20 3.75 0.00 575.90 3.76 0.00 579.60 3.77 0.00 583.33 3.78 0.00 587.06 3.79 0.00 590.81 3.80 0.00 594.57 3.81 0.00 598.35 3.82 0.00 602.14 3.83 0.00 605.95 3.84 0.00 609.77 3.85 0.00 613.61 3.86 0.00 617.45 3.87 0.00 621.32 3.88 0.00 625.19 3.89 0.00 629.08 3.90 0.00 632.99 3.91 0.00 636.91 3.92 0.00 640.84 3.93 0.00 644.79 3.94 0.00 648.76 3.95 0.00 652.73 3.96 0.00 656.72 3.97 0.00 660.73 3.98 0.00 664.75 3.99 0.00 668.79 4.00 0.00 672.83 4.01 0.00 676.90 4.02 0.00 680.98 4.03 0.00 685.07 4.04 0.00 689.18 4.05 0.00 693.30 4.06 0.00 697.43 4.07 0.00 701.58 4.08 0.00 705.75 4.09 0.00 709.93 4.10 0.00 714.12 4.11 0.00 718.33 4.12 0.00 722.55 4.13 0.00 726.79 4.14 0.00 731.05 4.15 0.00 735.31 4.16 0.00 739.59 4.17 0.00 743.89 4.18 0.00 748.20 4.19 0.00 752.53 4.20 0.00 756.87 4.21 0.00 761.23 4.22 0.00 765.60 4.23 0.00 769.98 4.24 0.00 774.38 4.25 0.00 778.80 4.26 0.00 783.23 4.27 0.00 787.67 4.28 0.00 792.13 4.29 0.00 796.60 4.30 0.00 801.09 4.31 0.00 805.60 4.32 0.00 810.12 4.33 0.00 814.65 4.34 0.00 819.20 4.35 0.00 823.76 4.36 0.00 828.34 4.37 0.00 832.93 4.38 0.00 837.54 4.39 0.00 842.17 4.40 0.00 846.80 4.41 0.00 851.46 4.42 0.00 856.13 4.43 0.00 860.81 4.44 0.00 865.51 4.45 0.00 870.22 4.46 0.00 874.95 4.47 0.00 879.70 4.48 0.00 884.46 4.49 0.00 889.23 4.50 0.00 894.02 4.51 0.00 898.83 4.52 0.00 903.65 4.53 0.00 908.48 4.54 0.00 913.33 4.55 0.00 918.20 4.56 0.00 923.08 4.57 0.00 927.98 4.58 0.00 932.89 4.59 0.00 937.82 4.60 0.00 942.76 4.61 0.00 947.72 4.62 0.00 952.69 4.63 0.00 957.68 4.64 0.00 962.68 4.65 0.00 967.70 4.66 0.00 972.74 4.67 0.00 977.79 4.68 0.00 982.86 4.69 0.00 987.94 4.70 0.00 993.03 4.71 0.00 998.15 4.72 0.00 1003.27 4.73 0.00 1008.42 4.74 0.00 1013.58 4.75 0.00 1018.75 4.76 0.00 1023.94 4.77 0.00 1029.14 4.78 0.00 1034.37 4.79 0.00 1039.60 4.80 0.00 1044.85 4.81 0.00 1050.12 4.82 0.00 1055.41 4.83 0.00 1060.71 4.84 0.00 1066.02 4.85 0.00 1071.35 4.86 0.00 1076.70 4.87 0.00 1082.06 4.88 0.00 1087.44 4.89 0.00 1092.83 4.90 0.00 1098.24 * 4.91 0.00 1105.09 4.92 0.00 1111.98 4.93 0.00 1118.89 4.94 0.00 1125.83 4.95 0.00 1132.80 * 4.96 0.00 1139.90 4.97 0.00 1147.03 4.98 0.00 1154.19 4.99 0.00 1161.39 5.00 0.00 1168.61 * 5.01 0.00 1176.13 5.02 0.00 1183.67 5.03 0.00 1191.26 5.04 0.00 1198.87 5.05 0.00 1206.52 5.06 0.00 1214.20 5.07 0.00 1221.92 5.08 0.00 1229.67 5.09 0.00 1237.46 5.10 0.00 1245.27 5.11 0.00 1253.13 5.12 0.00 1261.01 5.13 0.00 1268.93 5.14 0.00 1276.89 5.15 0.00 1284.88 5.16 0.00 1292.90 5.17 0.00 1300.96 5.18 0.00 1309.06 5.19 0.00 1317.18 5.20 0.00 1325.35 5.21 0.00 1333.54 5.22 0.00 1341.78 5.23 0.00 1350.05 5.24 0.00 1358.35 5.25 0.00 1366.69 5.26 0.00 1375.06 5.27 0.00 1383.47 5.28 0.00 1391.91 5.29 0.00 1400.39 5.30 0.00 1408.91 5.31 0.00 1417.46 5.32 0.00 1426.05 5.33 0.00 1434.67 5.34 0.00 1443.33 5.35 0.00 1452.03 5.36 0.00 1460.76 5.37 0.00 1469.53 5.38 0.00 1478.33 5.39 0.00 1487.17 5.40 0.00 1496.05 5.41 0.00 1504.96 5.42 0.00 1513.91 5.43 0.00 1522.90 5.44 0.00 1531.92 5.45 0.00 1540.98 5.46 0.00 1550.08 5.47 0.00 1559.22 5.48 0.00 1568.39 5.49 0.00 1577.60 5.50 0.00 1586.84 5.51 0.00 1596.13 5.52 0.00 1605.45 5.53 0.00 1614.81 5.54 0.00 1624.20 5.55 0.00 1633.64 5.56 0.00 1643.11 5.57 0.00 1652.62 5.58 0.00 1662.17 5.59 0.00 1671.75 5.60 0.00 1681.38 5.61 0.00 1691.04 5.62 0.00 1700.74 5.63 0.00 1710.48 5.64 0.00 1720.26 5.65 0.00 1730.07 5.66 0.00 1739.93 5.67 0.00 1749.82 5.68 0.00 1759.75 5.69 0.00 1769.73 5.70 0.00 1779.74 5.71 0.00 1789.79 5.72 0.00 1799.87 5.73 0.00 1810.00 5.74 0.00 1820.17 5.75 0.00 1830.38 5.76 0.00 1840.62 5.77 0.00 1850.91 5.78 0.00 1861.23 5.79 0.00 1871.60 5.80 0.00 1882.00 5.81 0.00 1892.45 5.82 0.00 1902.93 5.83 0.00 1913.46 5.84 0.00 1924.02 5.85 0.00 1934.63 5.86 0.00 1945.27 5.87 0.00 1955.96 5.88 0.00 1966.69 5.89 0.00 1977.45 5.90 0.00 1988.26 5.91 0.00 1999.11 5.92 0.00 2010.00 5.93 0.00 2020.93 5.94 0.00 2031.90 5.95 0.00 2042.92 5.96 0.00 2053.97 5.97 0.00 2065.07 5.98 0.00 2076.20 5.99 0.00 2087.38 6.00 0.00 2098.60 6.01 0.00 2109.86 6.02 0.00 2121.16 6.03 0.00 2132.51 6.04 0.00 2143.89 6.05 0.00 2155.32 6.06 0.00 2166.79 6.07 0.00 2178.31 6.08 0.00 2189.86 6.09 0.00 2201.46 6.10 0.00 2213.10 6.11 0.00 2224.78 6.12 0.00 2236.51 6.13 0.00 2248.27 6.14 0.00 2260.08 6.15 0.00 2271.94 6.16 0.00 2283.83 6.17 0.00 2295.77 6.18 0.00 2307.75 6.19 0.00 2319.78 6.20 0.00 2331.85 6.21 0.00 2343.96 6.22 0.00 2356.11 6.23 0.00 2368.31 6.24 0.00 2380.55 6.25 0.00 2392.84 6.26 0.00 2405.17 6.27 0.00 2417.54 6.28 0.00 2429.96 6.29 0.00 2442.42 6.30 0.00 2454.93 6.31 0.00 2467.48 6.32 0.00 2480.07 6.33 0.00 2492.71 6.34 0.00 2505.39 6.35 0.00 2518.12 6.36 0.00 2530.89 6.37 0.00 2543.71 6.38 0.00 2556.57 6.39 0.00 2569.48 6.40 0.00 2582.43 6.41 0.00 2595.43 6.42 0.00 2608.47 6.43 0.00 2621.56 6.44 0.00 2634.69 6.45 0.00 2647.87 6.46 0.00 2661.09 6.47 0.00 2674.36 6.48 0.00 2687.67 6.49 0.00 2701.03 6.50 0.00 2714.44 6.51 0.00 2727.89 6.52 0.00 2741.39 6.53 0.00 2754.93 6.54 0.00 2768.52 6.55 0.00 2782.16 6.56 0.00 2795.84 6.57 0.00 2809.57 6.58 0.00 2823.35 6.59 0.00 2837.17 6.60 0.00 2851.04 6.61 0.00 2864.96 6.62 0.00 2878.92 6.63 0.00 2892.93 *