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Great Lakes Daily Ice Observations at NOAA Water Level Gauge Sites, Version 1
Entry ID: G00945_1

Abstract: This data set contains daily visual ice observations taken yearly from 1 November to 30 April at NOAA/National Ocean Service water level gauge sites in the Great Lakes Basin from 1956 to the 1997. Not all gauge sites have reported each season; a list of sites with coordinates and reporting years is included with the data set. The longest records tend to be at river stations such as St. Clair, St. Marys, Detroit, and St. Lawrence. Daily observations are coded (open water, solid ice, honeycombed ice, slush ice, windrowed ice, drifting ice, or ice gorge), as well as first and last reported ice for each season.

Purpose: Scientific Research
Related URL
Description: Direct download, with optional registration page.
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Geographic Coverage
Spatial coordinates   
  N: 49.0   S: 41.0   E: -75.0   W: -93.0

Data Set Citation
Dataset Title: Great Lakes Daily Ice Observations at NOAA Water Level Gauge Sites, Version 1
Dataset Publisher: National Snow and Ice Data Center
Version: 1
Dataset DOI: 10.7265/N5PN93HT
Temporal Coverage
Start Date: 1956-11-01
Stop Date: 1997-04-30
Data Set Progress
Data Center
National Snow and Ice Data Center Supplemental Info
Data Center URL:

Data Center Personnel
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Phone: 1 303 492 6199
Email: nsidc at
Contact Address:
449 UCB
City: Boulder
Province or State: CO
Postal Code: 80309-0449
Country: USA
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Extended Metadata Properties
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Creation and Review Dates
DIF Creation Date: 1995-01-01
Last DIF Revision Date: 2019-04-16