# //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: 2025-07-24 19:40:03
# //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="06183450       " TIME_ZONE="MST" DST_FLAG=Y
# //STATION NAME="Big Muddy Creek near Antelope MT"
# //LABEL="Discharge ft^3/s"
# //PARAMETER CODE="00060"
# //RATING ID="15.0" TYPE="STGQ" NAME="stage-discharge" AGING=Working
# //RATING REMARKS="New rating created due to consistent scour on the mid to low end. Low-mid control is a gravel riffle that is subject to cattle movement. Used most measurements from the 2024wy and 2025wy. Slightly adjusted upper end to smooth out rating at about 4.5-5.5ft as well as, put just a touch more weight on more previous measurements than older measurements. Upper end overall had very minor adjustments. Reviewed by EEE 7/22/25: Lower end offset based on those recent GZF measurements near 1.00 ft for lower section control. Recent scour on lower end but intermediate and upper ends remain consistent. Checked for reversals up to 4.00 ft where there were a couple minor ones but no smoothing required. Recommended smoothing above 4.50 ft at transition and revisions appear reasonable. Overall, an improved rating. Agree more weight given to recent measurements. Typical sigmoid rating shape. Could have possibly used breakpoint on lower end but transition is gradual and not abrupt so ok for now. "
# //RATING EXPANSION="logarithmic"
# //RATING OFFSET1=1.000000E+00
# //RATING_INDEP ROUNDING="????" PARAMETER="Gage height (ft)"
# //RATING_DEP ROUNDING="????" PARAMETER="Discharge (ft^3/s)"
# //RATING_DATETIME BEGIN=20250411024500 BZONE=-07:00 END=-------------- EZONE=--- AGING=Working
# //RATING_DATETIME COMMENT="Start new rating on rise due to scour on mid to low end. No transition shift needed as RT 14.1 shift overlays at 1.73ft at almost same discharge at RT 15.0 direct. "
INDEP	DEP	STOR
16N	16N	1S
1.0800000E+00	0.0000000E+00	*
1.0900000E+00	1.0000000E-02	*
1.2811848E+00	2.3508476E+00	*
1.3250167E+00	4.0822204E+00	*
1.3572205E+00	5.4760043E+00	*
1.4442298E+00	9.3737556E+00	*
1.5604233E+00	1.4193556E+01	*
1.6467480E+00	1.8092501E+01	*
1.9310540E+00	3.1615926E+01	*
3.8336123E+00	1.2370329E+02	*
4.5100000E+00	1.6379000E+02	*
5.0491447E+00	2.0488344E+02	*
5.5679209E+00	2.5135106E+02	*
8.3300000E+00	6.2734000E+02	*
1.6740000E+01	3.0400000E+03	*