I don't think it stands very well on its own. Perhaps some text indicating that this is a flood plain in a particular region and discussing the level of water in the creek being unusually high or low at this time of year?
The light is flat. The highlight of the image is the creek forming a triangle in the lower left. Vegetation is dull. There is not much to look at. Some large and dangerous animal drinking from the near end of the creek would add a lot.
I agree. The light is just flat. You filled the frame and have a diagonal with the bank but the colors aren't popping and the focal purpose is missing. I always ask the question before I take the shot, "What is the image"? What is the subject. In cases like this when there is a lack of obvious subject, I move to an interesting angle. In this one I would try low, as in place the camera on or nearly on the ground or water surface and give a slight tilt. As there is nothing of note in the background I may go wide open and blow the background out but still keep a diagonal line involved. But yeah, just my thoughts.