We just published a paper on the value of crowdsourced web content for informing water systems operations. More details and the full paper are available here.

M. Giuliani, A. Castelletti, R. Fedorov, and P. Fraternali, Using crowdsourced web content for informing water systems operations in snow-dominated catchments, Hydrol. Earth Syst. Sci., 20, 5049-5062, doi:10.5194/hess-20-5049-2016, 2016.