GLERL Great Lakes Monthly Hydrologic Data (1860-1990)

Dates: 1860-01-01 through 1990-12-31
Investigator: Frank H. Quinn

Summary

Accurate hydrologic data (over-lake precipitation, runoff, lake evaporation, net basin supplies, connecting channel flows, diversion flows, beginning-of-month lake levels, and changes in storage) are required for simulation, forecasting, and water resource studies on the Laurentian Great Lakes and their basins. These data are derived from meteorological and hydrological data. The 1993 reference is an update of the earlier report describing Great Lakes monthly hydrologic data. It was expanded and revised to include all available data through 1990 and to reflect improved computational techniques. The raw data utilized were collected from several sources, so the periods of record for each lake vary.

While most of these data are available in the referenced reports, some of the data are not included in the report. These data may be available directly from GLERL. Daily values of some of these parameters may also be available from GLERL on a limited basis.

These data were derived from quality controlled input data (see reference) and are periodically updated to reflect additional data and to extend the period of record. Note that missing data in the *.CIS files is denoted by -9999. This only occurs in December of the last year.

Coverage includes Lake Superior, Lake Michigan, Lake Huron, Lake Erie, Lake Ontario, and Lake St.Clair.

Note: Most files have been updated through 1999. All data is now presented in spreadsheet format (MS-Excel 97 format). Some additional data types not present in the published report are also included in the data archive. Earlier versions of some of the spreadsheets (through 1995) are available as well (in the ArchivedFiles directory).

Data access

Report (MS-Word 6.0):
ftp://ftp.glerl.noaa.gov/publications/tech_reports/glerl-083/report.doc

Anonymous FTP:
Updated Files:
ftp://ftp.glerl.noaa.gov/publications/tech_reports/glerl-083/UpdatedFiles/

Older (through 1995):
ftp://ftp.glerl.noaa.gov/publications/tech_reports/glerl-083/ArchivedFiles/

References

Quinn, F. H. and R. N. Kelley, Great Lakes Monthly Hydrologic Data. NOAA Data Report ERL GLERL-26, National Technical Information Service, Springfield, Virginia, 22161, 1983.

Hunter, T. S. and T. E. Croley, II, Great Lakes Monthly Hydrologic Data, NOAA Data Report ERL GLERL, National Technical Information Service,Springfield, Virginia, 22161, 1993.

Further information

Tim Hunter, Computer Specialist
tim.hunter@.noaa.gov
734-741-2344
734-741-2055 (FAX)