# //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: 2023-12-14 16:25:02
# //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="06123030       " TIME_ZONE="MST" DST_FLAG=Y
# //STATION NAME="Musselshell River ab Mud Cr nr Shawmut MT"
# //LABEL="Discharge ft^3/s"
# //PARAMETER CODE="00060"
# //RATING ID="10.0" TYPE="STGQ" NAME="stage-discharge" AGING=Working
# //RATING REMARKS="Redeveloped new rating due to scour that occurred in Apr on 2023wy. There is a distinct change when looking at 2021-2022WY measurments below about 4.34ft. Then most measurements, present and historical, above about 7.60ft. When looking at the pictures on visit 7/25/2022 and 11/1/2022 compared to the picture on 9/14/2023 visit, there is a stark difference. There was one GZF collected on the 2023wy, but was done on 3/29/2023, before the large rise. The bridge is most likely the main control feature due to how the rating plots with a slope of greater than 2.0ft all the way to about 7.68ft. The 6/4/2023 visit had pictures showing how the river has not quite broke out to overbank yet on the left, confirming the rating up to that point. Used histoical ratings and looked at the wading measurement on 9/14/2023 and well as the 11/2/2023 measurement and took the gage height minus the depth to get an approximate new GZF and used that as the offset, 1.55ft, for the rating and adjusted rating offset for best fit.The slope slightly changed from 2.436ft to 2.9ft or so, but when looking at the pictures, can see the slight change in slope over that range with the combination of bridge section control and gravel control about 80-100ft downstream."
# //RATING EXPANSION="logarithmic"
# //RATING OFFSET1=1.550000E+00
# //RATING_INDEP ROUNDING="????" PARAMETER="Gage height (ft)"
# //RATING_DEP ROUNDING="????" PARAMETER="Discharge (ft^3/s)"
# //RATING_DATETIME BEGIN=20230410224500 BZONE=-07:00 END=-------------- EZONE=--- AGING=Working
# //RATING_DATETIME COMMENT="RT 9.0 with 3/29/2023 shift applied and RT 10.0. Date/time of rating switch is were the ratings overlay, with shift applied to RT 9.0, No transition shift needed. "
INDEP	DEP	STOR
16N	16N	1S
1.5600000E+00	3.3650000E-04	*
1.9700000E+00	3.0300000E+00	*
4.3500000E+00	3.0787000E+02	*
4.4800000E+00	3.4490000E+02	*
4.6000000E+00	3.8762000E+02	*
7.6800000E+00	2.7599200E+03	*
7.8600000E+00	3.0255600E+03	*
8.0200000E+00	3.3321700E+03	*
8.1600000E+00	3.7215900E+03	*
8.3800000E+00	4.4226400E+03	*
8.8900000E+00	6.4816600E+03	*