The colours are the most prominent and nicest in all three of these photos, and I like how you gave the weeds prominence over the dam. But I am also glad you let us see the whole thing in focus in the other two, so we get a better idea. At what time of the day did you take these. Looks like the sun is already getting its golden late afternoon tinge. (Here this starts at around 3:30 these days)
I like the first picture the best. Even though it is an awfully cliche perspective, i still like it. I really love the river in the background and how it is out of focus. I makes me think.