Esenwien, Robert C.Jensen, Richard W. Russell W. Kiesling, and Frank S. ShipleyProceedings: The Second State of the Bay Symposium. February 4 - 6, 19932010-02-152010-02-151993http://hdl.handle.net/1969.3/24146pgs. 281-283Cumulative impacts are incremental effects of projects which are added to the effects of other past, present, and reasonably foreseeable future projects. Forecasting cumulative impacts requires both a knowledge of and means for continually updating existing condition, an understanding of the impacts of proposed projects, and knowledge of what is reasonably foreseeable as future development.cumulative impactdata collectionsmodelsmathematical modelsChapter