# //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: 2023-03-08 23:50:02
# //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="06130500       " TIME_ZONE="MST" DST_FLAG=Y
# //STATION NAME="Musselshell River at Mosby MT"
# //LABEL="Discharge ft^3/s"
# //PARAMETER CODE="00060"
# //RATING ID="31.0" TYPE="STGQ" NAME="stage-discharge" AGING=Working
# //RATING REMARKS="JBS (3/8/2023) - Rating 31.0 was developed to address a shape problem with rating 30.1 below 4.0 ft. The offset of 2.09 ft on the low end is consistent with recently obtained GZFs. A breakpoint was used at 3.45 ft and an offset of 2.80 ft was used above it to best fit the higher measurements. A transition zone exists between 2.90 and 4.00 ft where a bar in the center of the channel downstream of the bridge is drowning out. There are a few reversals but they are all below 3%, see rating smoothing check worksheet attached in the sites location details. Rating segment slopes are consistent with the control types that they define. The rating computes zero flow below the bottom input point, 2.10 ft. And was extended to 17.00 ft, which is just above the 2011 high flow measurements. It was determined not necessary to extend to 2X the highest measured flow. Shifting to rating 31.0 will consist of a low flow shift curve that is a half house that has a merge point at the top of the transition zone at 4.00 ft and an elbow at the bottom of the transition at 2.90 ft. Shifting for high flows will also consist of a half house curve that blends back to the top of the rating at 17.00 ft with an elbow at the transition to a slightly different stage-discharge relationship at 9.90 ft. "
# //RATING EXPANSION="logarithmic"
# //RATING BREAKPOINT1=3.450000E+00
# //RATING OFFSET1=2.090000E+00 OFFSET2=2.800000E+00
# //RATING_INDEP ROUNDING="????" PARAMETER="Gage height (ft)"
# //RATING_DEP ROUNDING="????" PARAMETER="Discharge (ft^3/s)"
# //RATING_DATETIME BEGIN=20220318220000 BZONE=-07:00 END=-------------- EZONE=--- AGING=Working
# //RATING_DATETIME COMMENT="Start rating 31.0 just before ice comes off and gage height is available for computations."
INDEP	DEP	STOR
16N	16N	1S
2.1000000E+00	1.1088000E-02	*
2.9000000E+00	1.2880000E+02	*
3.1300000E+00	1.9915000E+02	*
3.4500000E+00	2.8190000E+02	*
3.7600000E+00	3.6911000E+02	*
4.0000000E+00	4.7100000E+02	*
9.9000000E+00	9.7930000E+03	*
1.7000000E+01	2.5780000E+04	*