National Ocean Service (Continued) 
Publications 
Great Lakes Water Levels—-Annual Summary 
Publication Date 
or Interval: Annually 
Location: Great Lakes 
Period of Coverage: 1952-present 
Contents: This publication is a data compilation which contains Great Lakes 
water level gage records in both feet and meters. It shows, in tabular form 
for the calendar year, daily and monthly average levels for each gage in the 
network, the highest and lowest daily average level for each month, and a fre- 
quency distribution of daily average levels showing the number of times each 
month the recorded levels were at or above specific elevations. The locations 
of the recording water level gages are shown; an index lists the gage 
locations, identification numbers, and geographic coordinates. 
Available From: Distribution Branch, N/CG 33 
National Ocean Service 
National Oceanic and Atmospheric Administration 
Riverdale, MD 20737 
(301) 436-6990 
III-11 
