Use your best judgement based on your wading experience and knowledge of the water you are wading in. Keep in mind that there are many in-stream springs that feed into the Guadalupe downstream of the monitoring station. These raise the flow above what is actually being released from the dam. God, The Army Corps of Engineers Regional Office in Ft. Worth and the Guadalupe Blanco River Authority, in that Order.
Canyon Lake is a flood controlling reservoir.
The Corps' goal is to maintain the Canyon reservoir at a conservation pool level of 909 feet above mean sea level. Often changing conditions in locales other than the immediate area are more important than what is happening just below the dam. If the in-flow is significant and the lake level is over 909 feet, then you can be fairly certain that the outflows in the Guadalupe will continue to be high. Generally, the Corps will try to get the outflow to match the inflow to maintain the level once the level is at 909 feet. The Corps of Engineers controls water releases at lake levels of 909 feet above mean sea level and higher.