hey boomer, interesting topic. just to get a conversation started, would like to see some educated responses on this. you might check with your local County offices to see what kind if any easements or restrictions apply to year-round creeks.
on your second question, it depends if he will use entire flow for his pond or only divert some of it. With the entire flow used, creek on your property would go dry til pond reaches full pool.
My only reference for this scenario is out here in CA. to my knowledge, all perennial creeks in the foothills, and many seasonal creeks are protected watershed and carry a 100 foot no building easement, so any pond construction across creek would (now) be illegal. My pond is constructed across a seasonal creek with such restrictions, but was built a long time ago (before the environmental protection laws and building easements were instituted).
