# //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: 2023-06-20 18:30:01 # //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="06111800 " TIME_ZONE="MST" DST_FLAG=Y # //STATION NAME="Big Spring Cr at R&B Trading Post nr Lewistown MT" # //LABEL="Discharge ft^3/s" # //PARAMETER CODE="00060" # //RATING ID="4.0" TYPE="STGQ" NAME="stage-discharge" AGING=Working # //RATING REMARKS="Revised upper end due to recent flooding based on Meas. 64 and backwater. A breakpoint was inserted at 4.40 ft where recent higher measurements suggest a slope change. Minor backwater occurs as stage increases from brushy left bank. A breakpoint was used due to reversals as deviates from straight line rating. A couple descriptor points added near breakpoint to smooth transition. Some minor fill ocurring on lower end since when gage first started. Low flow control more like combined or channel than section at intermediate stages." # //RATING EXPANSION="logarithmic" # //RATING BREAKPOINT1=4.400000E+00 # //RATING OFFSET1=2.400000E+00 OFFSET2=3.300000E+00 # //RATING_INDEP ROUNDING="????" PARAMETER="Gage height (ft)" # //RATING_DEP ROUNDING="????" PARAMETER="Discharge (ft^3/s)" # //RATING_DATETIME BEGIN=20230601150000 BZONE=-07:00 END=-------------- EZONE=--- AGING=Working # //RATING_DATETIME COMMENT="" INDEP DEP STOR 16N 16N 1S 3.3700000E+00 7.8000000E+01 * 4.3300000E+00 3.0350000E+02 * 4.4000000E+00 3.2519000E+02 * 4.4800000E+00 3.5020000E+02 * 7.0000000E+00 1.1590000E+03 *