Subject: What are the effects of human-introduced silver iodide on the environment?

I am a journalist and environmentalist who is concerned about the re-
introduction of cloud-seeding in my area (SW Colorado)and the potential 
negative mpacts of human interference with weather, from the perspective 
of both environmental and social justice.  What could happen with all the 
silver iodide being introduced to the air (and presumably the water and 
land as it falls)?  And if we get it to snow more in one area, won't that 
take away precipitation from another area that may also need it?  

Re: What are the effects of human-introduced silver iodide on the environment?