The following files were produced using stream-flow monitoring information for the Great Lakes States and Ontario and the BFLOW, HYSEP, PART, and UKIH methods of base-flow separation. Daily values of observed streamflow and calculated base flow compiled by State and province are located in the "IL," "IN," "MI," "MN," "NY," "OH," "PA," and "WI" and "ON" sub-directories. Summaries of these results compiled across the Great Lakes States and Ontario are located in the "greatlakesstates" and "ontario" directories. The names of the files indicate their content; for example, the "bflowbyid.txt" files are summaries by gage identifier (id) of results calculated using the BFLOW method of base-flow separation. The descriptions of the files list the fields in parentheses and then the definition and type (text, integer, or floating point) of the fields. The content of the "julianbyyearmonthday.txt" file can be used to relate Julian dates to calendar dates. The ".txt" files are “zip” compressed. Users can open these files using zip compression software, such as PKUNZIP, PKZIP, WINZIP, or any other zip compression software. MD5 checksums for the uncompressed files are listed below and can be used to confirm the content of the files. (The MD5 checksum for a file is a 128-bit value derived from the contents of the file, something like a fingerprint of the file. This value can be used to verify the integrity of the file's contents). Finally, many of these files are larger than some software programs such as MS Excel can read and it may take several minutes for many of these files to open using common software such as MS Access on a personal computer. ------------------------------------------------------------------------------ julianbyyearmonthday.txt (.zip) Julian dates arranged by year, month, and day (year, month, day, julian) year = year (integer) month = month (integer - 01 to 12) day = day (integer - 01 to 31) julian = Julian date (integer - aa.usno.navy.mil/faq/docs/JD_Formula.html) ------------------------------------------------------------------------------ greatlakesstates/bflowbyid.txt (.zip) ontario/bflowbyid.txt (.zip) BFLOW results summarized by gage (id, countofjulian, bfi) id = gage identifier (text) countofjulian = number of days of data used in the summary (integer) bfi = base-flow index (floating point) ------------------------------------------------------------------------------ greatlakesstates/bflowbyidyearmonth.txt (.zip) ontario/bflowbyidyearmonth.txt (.zip) BFLOW results summarized by gage, year, and month (id, year, month, countofjulian, avgofflow, avgofbase) id = gage identifier (text) year = year (integer) month = month (integer - 01 to 12) countofjulian = number of days of data used in the summary (integer) avgofflow = average of the daily values of streamflow (floating point) avgofbase = average of the daily values of base flow (floating point) ------------------------------------------------------------------------------ greatlakesstates/hysep1byid.txt (.zip) ontario/hysep1byid.txt (.zip) HYSEP method 1 (fixed-interval) results summarized by gage See greatlakesstates/bflowbyid.txt ------------------------------------------------------------------------------ greatlakesstates/hysep1byidyearmonth.txt (.zip) ontario/hysep1byidyearmonth.txt (.zip) HYSEP method 1 (fixed-interval) results summarized by gage, year, and month See greatlakesstates/bflowbyidyearmonth.txt ------------------------------------------------------------------------------ greatlakesstates/hysep2byid.txt (.zip) ontario/hysep2byid.txt (.zip) HYSEP method 2 (sliding-interval) results summarized by gage See greatlakesstates/bflowbyid.txt ------------------------------------------------------------------------------ greatlakesstates/hysep2byidyearmonth.txt (.zip) ontario/hysep2byidyearmonth.txt (.zip) HYSEP method 2 (sliding-interval) results summarized by gage, year, and month See greatlakesstates/bflowbyidyearmonth.txt ------------------------------------------------------------------------------ greatlakesstates/hysep3byid.txt (.zip) ontario/hysep3byid.txt (.zip) HYSEP method 3 (local-minimum) results summarized by gage See greatlakesstates/bflowbyid.txt ------------------------------------------------------------------------------ greatlakesstates/hysep3byidyearmonth.txt (.zip) ontario/hysep3byidyearmonth.txt (.zip) HYSEP method 3 (local-minimum) results summarized by gage, year, and month See greatlakesstates/bflowbyidyearmonth.txt ------------------------------------------------------------------------------ greatlakesstates/partbyid.txt (.zip) ontario/partbyid.txt (.zip) PART results summarized by gage See greatlakesstates/bflowbyid.txt ------------------------------------------------------------------------------ greatlakesstates/partbyidyearmonth.txt (.zip) ontario/partbyidyearmonth.txt (.zip) PART results summarized by gage, year, and month See greatlakesstates/bflowbyidyearmonth.txt ------------------------------------------------------------------------------ greatlakesstates/ukihbyid.txt (.zip) ontario/ukihbyid.txt (.zip) UKIH results summarized by gage See greatlakesstates/bflowbyid.txt ------------------------------------------------------------------------------ greatlakesstates/ukihbyidyearmonth.txt (.zip) ontario/ukihbyidyearmonth.txt (.zip) UKIH results summarized by gage, year, and month See greatlakesstates/bflowbyidyearmonth.txt ------------------------------------------------------------------------------ greatlakesstates/IL/bflowbyidjulian.txt (.zip) greatlakesstates/IN/bflowbyidjulian.txt (.zip) greatlakesstates/MI/bflowbyidjulian.txt (.zip) greatlakesstates/MN/bflowbyidjulian.txt (.zip) greatlakesstates/NY/bflowbyidjulian.txt (.zip) greatlakesstates/OH/bflowbyidjulian.txt (.zip) greatlakesstates/PA/bflowbyidjulian.txt (.zip) greatlakesstates/WI/bflowbyidjulian.txt (.zip) ontario/ON/bflowbyidjulian.txt (.zip) BFLOW results arranged by gage and Julian date (id, julian, flow, base) id = gage identifier (text) julian = Julian date (integer - aa.usno.navy.mil/faq/docs/JD_Formula.html) flow = streamflow (floating point) base = base flow (floating point) ------------------------------------------------------------------------------ greatlakesstates/IL/hysep1byidjulian.txt (.zip) greatlakesstates/IN/hysep1byidjulian.txt (.zip) greatlakesstates/MI/hysep1byidjulian.txt (.zip) greatlakesstates/MN/hysep1byidjulian.txt (.zip) greatlakesstates/NY/hysep1byidjulian.txt (.zip) greatlakesstates/OH/hysep1byidjulian.txt (.zip) greatlakesstates/PA/hysep1byidjulian.txt (.zip) greatlakesstates/WI/hysep1byidjulian.txt (.zip) ontario/ON/hysep1byidjulian.txt (.zip) HYSEP method 1 (fixed-interval) results arranged by gage and Julian date See greatlakesstates/IL/bflowbyidjulian.txt ------------------------------------------------------------------------------ greatlakesstates/IL/hysep2byidjulian.txt (.zip) greatlakesstates/IN/hysep2byidjulian.txt (.zip) greatlakesstates/MI/hysep2byidjulian.txt (.zip) greatlakesstates/MN/hysep2byidjulian.txt (.zip) greatlakesstates/NY/hysep2byidjulian.txt (.zip) greatlakesstates/OH/hysep2byidjulian.txt (.zip) greatlakesstates/PA/hysep2byidjulian.txt (.zip) greatlakesstates/WI/hysep2byidjulian.txt (.zip) ontario/ON/hysep2byidjulian.txt (.zip) HYSEP method 2 (sliding-interval) results arranged by gage and Julian date See greatlakesstates/IL/bflowbyidjulian.txt ------------------------------------------------------------------------------ greatlakesstates/IL/hysep3byidjulian.txt (.zip) greatlakesstates/IN/hysep3byidjulian.txt (.zip) greatlakesstates/MI/hysep3byidjulian.txt (.zip) greatlakesstates/MN/hysep3byidjulian.txt (.zip) greatlakesstates/NY/hysep3byidjulian.txt (.zip) greatlakesstates/OH/hysep3byidjulian.txt (.zip) greatlakesstates/PA/hysep3byidjulian.txt (.zip) greatlakesstates/WI/hysep3byidjulian.txt (.zip) ontario/ON/hysep3byidjulian.txt (.zip) HYSEP method 3 (local-minimum) results arranged by gage and Julian date See greatlakesstates/IL/bflowbyidjulian.txt ------------------------------------------------------------------------------ greatlakesstates/IL/partbyidjulian.txt (.zip) greatlakesstates/IN/partbyidjulian.txt (.zip) greatlakesstates/MI/partbyidjulian.txt (.zip) greatlakesstates/MN/partbyidjulian.txt (.zip) greatlakesstates/NY/partbyidjulian.txt (.zip) greatlakesstates/OH/partbyidjulian.txt (.zip) greatlakesstates/PA/partbyidjulian.txt (.zip) greatlakesstates/WI/partbyidjulian.txt (.zip) ontario/ON/partbyidjulian.txt (.zip) PART results arranged by gage and Julian date See greatlakesstates/IL/bflowbyidjulian.txt ------------------------------------------------------------------------------ greatlakesstates/IL/ukihbyidjulian.txt (.zip) greatlakesstates/IN/ukihbyidjulian.txt (.zip) greatlakesstates/MI/ukihbyidjulian.txt (.zip) greatlakesstates/MN/ukihbyidjulian.txt (.zip) greatlakesstates/NY/ukihbyidjulian.txt (.zip) greatlakesstates/OH/ukihbyidjulian.txt (.zip) greatlakesstates/PA/ukihbyidjulian.txt (.zip) greatlakesstates/WI/ukihbyidjulian.txt (.zip) ontario/ON/ukihbyidjulian.txt (.zip) UKIH results arranged by gage and Julian date See greatlakesstates/IL/bflowbyidjulian.txt ------------------------------------------------------------------------------ MD5 checksums for the uncompressed files 8a7c75f5d354d1195cd08751c23ce699 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