“Houston is a flat, marshy area where an extensive drainage system has been built. The adjoining prairie land drains into the city, which is prone to flooding. Underpinning Houston's land surface are unconsolidated clays, clay shales, and poorly cemented sands up to several miles deep. The region's geology developed from river deposits formed from the erosion of the Rocky Mountains.” From: https://en.wikipedia.org/wiki/Houston

For more nature and ecology, see: The CCERP Website: https://www.ccerp.org The CCERP Facebook page: https://www.facebook.com/groups/1152144714995033 The CCERP Podcast: https://www.spreaker.com/show/ccerp-podcast My iNaturalist account: https://www.inaturalist.org/observations?place_id=any&user_id=michaelgold&verifiable=any My Flickr account: https://www.flickr.com/photos/150241975@N08 My YouTube account: https://www.youtube.com/channel/UCcYrlWltX4GpGUmZr-z6UPQ See also the ReasonRx Podcast, a podcast about all things education :https://www.spreaker.com/show/the-reasonrx-podcast