Using drones (UAVs) to measure turbidity (water quality) in small streams

I didn't write this myself, but I wanted to post the link anyway since this is a project I have been working on closely from design to data collection to analysis, along with a research fellow (Essayas Kaba Ayana) at Columbia University that I'm mentoring through the NatureNet program. We originally hoped to do this work in Kenya but legal and logistical difficulties required us to switch to Maryland:
http://blog.nature.org/science/2015/11/05/drones-in-the-field/