Contaminated water from neighbors horse pasture causing blue green algae called oscillatoria, can I dam stop the water?
asked 11 March 2017 asked by Linehand (450 points)
I do not know where you are located but if I were you I would try to see with the environment department. The province in the case of Canada and the local EPA branch in the case of US.
In Oregon we have riparian setbacks. http://www.deq.state.or.us/wq/dwp/docs/setbacksRMAs.pdf http://www.oregon.gov/oprd/rules/docs/sww_log.pdf