# //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: 2023-10-30 18:45:02 # //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="06119600 " TIME_ZONE="MST" DST_FLAG=Y # //STATION NAME="Musselshell River nr Martinsdale, MT" # //LABEL="Discharge ft^3/s" # //PARAMETER CODE="00060" # //RATING ID="7.0" TYPE="STGQ" NAME="stage-discharge" AGING=Working # //RATING REMARKS="Developed new rating due to higher flows in Apr/May 2023, low flows from 2018-2019WY, 2022-2023WY, and was based on new GZF from the 2022wy at 0.75ft. The upper end used Qm 177-178 from the 2023WY, as well as high flow measurements from 2021-2022wy as well as histroical high flows Qm's from 2018WY and 2019WY. The low end used Qm 179-180 from the 2023wy as well as Qm's 168-169, 171, 173, and 174, which showed slight fill. Balance the low flow Qm's. The lower to middle portion of the rating has a slope of 2.135ft indicating section control and then the upper middle and upper portion of the rating had a slope of less than 2, indicating channel control. " # //RATING EXPANSION="logarithmic" # //RATING OFFSET1=7.500000E-01 # //RATING_INDEP ROUNDING="????" PARAMETER="Gage height (ft)" # //RATING_DEP ROUNDING="????" PARAMETER="Discharge (ft^3/s)" # //RATING_DATETIME BEGIN=20230411000000 BZONE=-07:00 END=-------------- EZONE=--- AGING=Working # //RATING_DATETIME COMMENT="developed new rating due to higher flows in Apr/May 2023." INDEP DEP STOR 16N 16N 1S 7.5000000E-01 0.0000000E+00 * 8.1000000E-01 1.2300000E-01 * 9.2000000E-01 1.1370000E+00 * 2.8400000E+00 2.4128000E+02 * 4.4300000E+00 6.9700000E+02 * 6.3000000E+00 1.3900000E+03 * 6.7000000E+00 1.5752000E+03 *