The ice on Lake Pepin has not diminished very much even with the warmer weather this month.
The U-S Army Corps of Engineers conducted a second survey on Wednesday and discovered there is still in excess of two feet thick of ice in most areas.
The deepest ice was found two miles above Reads Landing where it was still 30 inches thick, a drop of only two inches in two weeks. The ice was 27 inches thick one mile above Reads Landing.
At almost all of the other 15 survey locations the ice was still 24-to-26 inches deep.
That could mean a later opening of the commercial shipping season on the Upper Mississippi River where the average opening at St. Paul over the last ten years has been March 21st.
The shipping season in Winona may open sooner once Lock and Dam Eight south of La Crosse is opened for barge traffic this coming Monday after undergoing winter repairs. That opening was delayed one week because of thick ice.