# //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: 2026-08-06 18:50:01 # //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="12340000 " TIME_ZONE="MST" DST_FLAG=Y # //STATION NAME="Blackfoot River near Bonner MT" # //LABEL="Discharge ft^3/s" # //PARAMETER CODE="00060" # //RATING ID="9.0" TYPE="STGQ" NAME="stage-discharge" AGING=Working # //RATING REMARKS="Redrawn for since gage was moved downstream in WY 2025. Based upon QMs: 813-819. Same offset and similar BP as rating 8.00 since the gage was moved downstream but in same gage pool. Carried to twice the amount of QM 818. Rating extended down below 120 cfs (lowesest estimated discharge since 2000). " # //RATING EXPANSION="logarithmic" # //RATING BREAKPOINT1=4.283322E+00 # //RATING OFFSET1=1.500000E-01 OFFSET2=6.000000E-01 # //RATING_INDEP ROUNDING="????" PARAMETER="Gage height (ft)" # //RATING_DEP ROUNDING="????" PARAMETER="Discharge (ft^3/s)" # //RATING_DATETIME BEGIN=20251130121500 BZONE=-07:00 END=-------------- EZONE=--- AGING=None # //RATING_DATETIME COMMENT="End rating 8.0 and begin rating 9.0 at stages 1.65, change in Q = 348.4-347.6 = +0.8 cfs / 347.6 = 0.23, % difference. " INDEP DEP STOR 16N 16N 1S 1.0000000E+00 1.0241000E+02 * 4.2833225E+00 3.0961826E+03 * 8.8232328E+00 1.2511860E+04 *