Abstract
The height of the level of the sea at any time, exclusive of the astronomical tide, is closely related to the atmospheric pressure and the prevailing wind. Where the gaging station is situated on a tidal river the precipitation over the drainage basin may also be an influence. Important secular trends of these three elements are noted during the history of the tide gage at Charleston, S. C. The progressive rise in sea level as indicated by this gage may have been influenced by these trends.