Kumz I will pm you...
Like I said the plan is not in implementation left, we are partners with people who build dams and ponds etc. so there advice will be asked for and also costs wont be a lot because we are involved in that industry, we do the internet marketing for them, they do the actual ground work...
So far from an image I have seen the lay of the land is quite flat and its a big plot, with 2 streams coming into the property, both from a golf course/nature reserve, so that is good... I have filtration systems I will place into the inlet of the dam to make sure nothing bad gets in...
Havent physically seen it, but none of those factors will need to much attention...
The main thing is I need to secure some land... Stream or not, pumps can be placed underwater in specific positins