White Oak Bayou flooding. The first crest is from the hurricane, the second crest is from a thunderstorm the next day. Fortunately it was a cold front storm, so all those folks without power got a little break from heat and humidity.
This is from a public source:
http://ahps.srh.noaa.gov/ahps2/hydrograph.php?wfo=hgx&gage=hgtt2