4. SOURCES OF DATA 
Table 1. Onshore Data Resources 
A. Pagination 
The large volume of information pertinent to each data source has 
necessitated the use of two pages for each source. These appear on 
facing pages which are numbered consecutively. The information is pre- 
sented in eight groups (five Lakes, three connecting waterways) beginning 
with Lake Superior and proceeding eastward. Data sources are listed geo- 
graphically within each group beginning at an arbitrary point and pro- 
ceeding counterclockwise around each Lake or through each of the water- 
ways. 
Each data source location is numbered serially within its group, 
the number appearing in the first column of each facing page. Numbers 
identify the location on the second page where designation by name has 
been omitted. 
B. Agency and Contact 
In column 3, Agency refers to the particular organization which 
obtains data at the specific location designated in column 2; Contact 
refers to the person within the organization who should be consulted in 
regard to any data recorded. 
In the tabulations a contact is not given for stations whose records 
are available from some central compilation office. Agencies included 
in this category are as follows: 
1. U. S. Weather Bureau First Order, Second Order and Cooperative 
stations, U. S. Naval Air Stations, and U. S. Air Force Bases. Data 
from these agencies are filed with and obtainable from the National 
Weather Records Center, Asheville, North Carolina. 
2. Canadian Meteorological Division Class I, LI, III, and c 
stations. Data from these agencies are filed with and obtainable from 
the Climatological Section, Meteorological Division, Department of 
Transport, Toronto, Ontario. 
3. U. S. Lake Survey water level records. Data are obtainable 
from the U. S. Lake Survey Office, 630 Federal Building, Detroit 26, 
Michigan. 
4. Canada Hydrographic Service water level records. Data are ob- 
tainable from the Dominion Hydrographer, Canadian Hydrographic Service, 
Canada Department of Mines and Technical Surveys, Ottawa, Ontario. 
5. U. S. Coast Guard installations. With respect to collection of 
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