Another project idea involves scouring and merging tide info (high temporal frequency ~4 records/day) from http://tidesandcurrents.noaa.gov or similar agency with a bay pollution dataset (low frequency ~2 records/month) I have for Morro Bay, then building some models which may include lagged tides, tide rate of change, or other functions of tide to predict pollution.

Check out http://www.martindalecenter.com/CalculatorsD_Wea.html. There's a ton of web-based data in many forms to scour.