Seth A. Siefken Daniel W. Armstrong Katherine J. Chase Peter M. McCarthy Steven K. Sando 20201208 text file Reston, Virginia U.S. Geological Survey https://doi.org/10.5066/P91HB8GI Steven Sando Peter McCarthy 2018 U.S. Geological Survey Scientific Investigations Report Scientific Investigations Report 2018-5046 Reston, Virginia U.S. Geological Survey This file (wymt_ffa_2018C.psf) contains specifications to run PeakFQ version 7.3 for peak-flow frequency analyses for selected streamgages in Carbon County, Montana, based on data through water year 2018. This file defines the analysis specifications for the U.S. Geological Survey PeakFQ computer program used for peak-flow frequency analyses. It sets the location and name of other input and output files and describes the analysis type, perception thresholds, beginning year, ending year, historic period, skew option, outlier detection option, and additional settings for each of the sites within the WATSTORE input file. 1905 2018 ground condition Complete As needed -109.3674 -108.8015 45.5179 45.0099 ISO 19115 Topic Category inlandWaters USGS Thesaurus computational methods statistical analysis time series analysis stream-gage measurement hydrologic processes floods streamflow hazards USGS-CC Natural Hazards hazard preparedness watershed management General peak-flow frequency annual exceedance probability streamflow hydrology USGS Metadata Identifier USGS:5fcaadc3d34e30b912389495 Common geographic areas Land North America United States Montana Carbon none none Seth Siefken U.S. Geological Survey WY-MT Water Science Center mailing and physical

3162 Bozeman Ave

Helena MT 59601 US 406-457-5935 ssiefken@usgs.gov Montana Department of Natural Resources Veilleux, A.G., Cohn, T.A., Flynn, K.M., Mason, R.R., Jr., and Hummel, P.R. 2014 publication U.S. Geological Survey Fact Sheet 2013-3108 Reston, Virginia U.S. Geological Survey https://water.usgs.gov/software/PeakFQ/ U.S. Geological Survey 2019 application/service Reston, Virginia U.S. Geological Survey http://nwis.waterdata.usgs.gov/usa/nwis/peak No formal attribute accuracy tests were conducted No formal logical accuracy tests were conducted Data set is considered complete for the information presented, as described in the abstract. Users are advised to read the rest of the metadata record carefully for additional details. No formal positional accuracy tests were conducted No formal positional accuracy tests were conducted U.S. Geological Survey 2020 online Reston, Virginia U.S. Geological Survey https://nwis.waterdata.usgs.gov/usa/nwis/peak annual peak-flow data 1905 2018 see dates NWIS Peak-flow data obtained from NWIS USGS streamgage numbers obtained from NWIS. 2020 USGS streamgage number is appended with analysis designation in the format XXXXXXXX.AB where XXXXXXXX is the streamgage identification number, A is the regulation status for the analysis period, and B is the type of peak-flow frequency analysis. Values of A (regulation status) are defined as: A = 0, unregulated; A = 1, regulated by major regulation; and A =2, total; that is, the combined unregulated and regulated peak-flow records for streamgages with peak-flow records before and after the start of regulation. Values of B (type of peak-flow frequency analysis) are defined as: B = 0, at-site peak-flow frequency analysis conducted on recorded data; B = 1, peak-flow frequency analysis conducted on combined recorded and synthesized data; synthesized data from Maintenance of Variance Extension Type III (MOVE.3) record extension procedure; B =2, peak-flow frequency analysis determined from regional regression equations (RREs); and B = 3, at-site peak-flow frequency analysis weighted with results from RREs. 2020 PeakFQ User's Manual Appendix B.1. (Batch Specifications). Flynn, K.M., Kirby, W.H., and Hummel, P.R., 2006, User’s Manual for Program PeakFQ Annual Flood-Frequency Analysis Using Bulletin 17B Guidelines: U.S. Geological Survey, Techniques and Methods Book 4, Chapter B4; 42 pgs. https://pubs.usgs.gov/tm/2006/tm4b4/ GS ScienceBase U.S. Geological Survey mailing address

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Denver CO 80225 US 1-888-275-8747 sciencebase@usgs.gov Unless otherwise stated, all data, metadata and related materials are considered to satisfy the quality standards relative to the purpose for which the data were collected. Although these data and associated metadata have been reviewed for accuracy and completeness and approved for release by the U.S. Geological Survey (USGS), no warranty expressed or implied is made regarding the display or utility of the data on any other system or for general or scientific purposes, nor shall the act of distribution constitute any such warranty. Users should be familiar with hydrologic and statistical methods used for calculating, interpreting and applying these data. 20201208 Seth Siefken U.S.Geological Survey Wyoming-Montana Water Science Center Civil Engineer mailing and physical

3162 Bozeman Ave

Helena MT 59601 US 406-457-5935 ssiefken@usgs.gov Content Standard for Digital Geospatial Metadata FGDC-STD-001-1998