Harris County Flood Control District home pageAbout the districtPrograms and projectsLearning centerMaps and exhibitsFrequently asked questionsDownloadsLinksNews and media events
Your opinion matters. Take our quick survey.
2009 Hurricane
Tracker
2009 Hurricane
Tracker en español
Tropical Weather Center
Glossary
Photo Gallery
VR Panorama Tour
Family Flood Preparedness
Flood Damage Reduction Tools
Flood Insurance Rate Maps
Flood Insurance: Who Needs It?
Floodplains Explained
Greens Bayou Wetlands
Mitigation Bank VR Tour
Harris County's
Drainage Network
Harris County's
Flooding History
Harris County's
Floodplain Types
Harris County's
Watersheds
Addicks Reservoir
Armand Bayou
Barker Reservoir
Brays Bayou
Buffalo Bayou
Carpenters Bayou
Cedar Bayou
Clear Creek
Cypress Creek*
Galveston Bay
Greens Bayou
Hunting Bayou
Jackson Bayou
Luce Bayou
San Jacinto River
Sims Bayou
Spring Creek
Spring Gully & Goose Creek
Vince Bayou
White Oak Bayou
Willow Creek
Harris County
Watersheds Puzzle
Landowner's Bill of Rights
LiDAR: What is it?
Maintenance or Management?
Quizzes
Stormwater Detention: How It Works
TS-Allison Overview
Who Owns the Raindrop?
WRDA: What is it?

Galveston Bay Watershed


Map illustration of Galveston Bay Watershed About the Watershed
The Galveston Bay watershed is located at the southeastern edge of Harris County. The watershed primarily drains the area that includes La Porte, Morgans Point and portions of Pasadena. However, Galveston Bay is the ultimate outfall for all drainage in Harris County. The Galveston Bay watershed covers about 20 square miles and includes two primary streams: Little Cedar Bayou and Pine Gully. There are about 24 miles of open streams within the watershed, including the primary streams and tributary channels. The estimated population within the Galveston Bay watershed (Harris County portion) is just under 20,000.

Structural flooding has occurred in low-lying areas adjacent to the water bodies. However, water surface elevations in Galveston Bay are not affected by the flow from the bayou system. Water Surface elevations in Galveston Bay are tidally influenced and can be affected by storm surge.

Land Use
Much of the watershed has been developed, including several areas of significant industrial and pertrochemical activity. The watershed is adjacent to the Houston Ship Channel.

Environment
Galveston Bay supports a wide diversity of marine habitat and wildlife, including adjacent marshes and estuaries. Many areas within the watershed are considered environmentally sensitive.

Galveston Bay Watershed Stats:

Drainage Area Watershed Population (in Harris County) Open Stream Miles Primary Streams
20 Sq. Miles 19,868 24 Miles Little Cedar Bayou
Pine Gully


Click on any of the watershed links below (also found in the in the left nav) to view detailed information about each of Harris County's watersheds.

> See also Watersheds & Channels Reference Guide PDF


> Addicks Reservoir
> Armand Bayou
> Barker Reservoir
> Brays Bayou
> Buffalo Bayou
> Carpenters Bayou
> Cedar Bayou
> Clear Creek
> Cypress Creek*
> Galveston Bay
> Greens Bayou
> Hunting Bayou
> Jackson Bayou
> Luce Bayou
> San Jacinto River
> Sims Bayou
> Spring Creek
> Spring Gully & Goose Creek
> Vince Bayou
> White Oak Bayou
> Willow Creek

Harris County Flood Control District
Footer navigation Home About the District Programs and Projects Learning Center Maps and Exhibits Frequently Asked Questions Downloads Links News and Events Contact Us Employment Site map Terms, Conditions and Notices Privacy Policy Accessibility Search