I also have a waterbody in East Texas impacted by the recent abnormal rains. My creek fed, 18-acre lake is in the Hillister area, just south of Woodville. I have a 21 ft wide concrete primary spillway and a 70 ft wide earthen emergency spillway. I also have two 36" diameter drawdown pipes to help drawdown the lake in advance of tropical storms or other predictable extreme rain events. I am considering adding another concrete lined spillway in place of the earthen emergency spillway since it appears we are having more extreme, unpredictable rain events. Iy you are in the area, you are welcome to come take a look to see if any of the flow controls I have might work for you.

In the mean time, I am struggling to find hydrographs for the creek that feeds my lake (Spurlock Branch). I've downloaded all sorts of rain data and geographic information such as drainage basin and catch basin areas, but can't find 25-yr or 100-yr flow data for the creek. Anyone have any ideas about where I might find that?

Also, anybody know of an experienced spillway designer in the East Texas area?
Attachments
Spillway-2RS.jpg Spillway-1RS.jpg Lake Discharge Pipes-2RS.jpg Lake Discharge Pipes-1RS.jpg