Maximum depth and average depth of the pond would determine if I owned property on that body of water. The shallower it is the more problems you can expect. Shallow water is always problematic for weeds due to the sunlight always being able to reach the bottom.
Also fertilization of lawns that drain into the pond will always be a major problem. Everyone wants a nice looking lawn which usually means fertilizer and lawn chemicals; two things you don't want in the pond. IF you have WM and DW then the pond is telling you it is overfertilized. Excess nutrients and annual renewal of nutrients from lawns and the water shed are very hard to overcome even with proper aeration. "Your" pond looks to me, to be one of those poorly designed bodies of water that many developers create just to sell lots. Then the home owners are stuck having to deal with a poorly designed lake that is too shallow and too problematic due a poorly managed water shed.
I think the lake will always be a problem, always requiring lots of herbicides and expense to keep it looking decent. DWeed and WMeal are symptoms of over-enriched water bodies that are in late stages in terms of the life of a water body. Expect to expend lots of effort keeping these types of overenriched ponds weed or algae free.
