TDUBYA,
I have been following your thread with interest. I have a similar creek on my Texas property. Mine has a bedrock base with sand and gravel continually washing down with each heavy rain/flood event. I have considered building a temporary weir of sand bags across a narrow section to create a small pond and see if it's really what I want and to better understand the issues of silt/gravel buildup before investing in a more permanent effort. I figure if sand bags can hold back the Mississippi river they ought to work in my project. Your thoughts?