University activities/operations that can impact the quantity and quality of stormwater runoff. Cascadilla Creek and Fall Creek run through Cornell University's Ithaca Campus. Campus stormwater systems discharge into these creeks and ultimately to Cayuga Lake. The campus sits within three MS4's - Town of Ithaca, City of Ithaca and Cayuga Heights. Stormwater runoff from construction projects is subject to NYSDEC regulations and projects within each MS4 must be approved according to their individual codes. Codes and regulations for each MS4 and the state are located in the links below.