National Park Service

Gulf Coast Network (GULN)

Parks in this Network

GULN Network Map
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Network Map

Gulf Coast Network

American alligator at Jean Lafitte National Historical Park and Preserve Barrier Islands at Gulf Island NS Pileated woodpecker at Vicksburg National Military Park Sunrise at Padre Island NS Jean Lafitte National Historical Park and Preserve Big Thicket National Preserve American toad at Vicksburg National Military Park Mission San Juan Capistrano at San Antonio Missions NHP Pileated woodpecker at Vicksburg National Military Park Basket grass at Vicksburg National Military Park Eastern diamondback rattlesnake at Gulf Island NS Gulf Island National Seashore Marsh along Lake Salvador at Jean Lafitte NHPP Metal Ford Branch on the Natchez Trace Parkway
The Gulf Coast Network (GULN) includes eight national parks. The network's geographic area encompasses the western third of Florida, all of Mississippi and Louisiana, the southeastern quarter of Texas, and extends up through the northwest corner of Alabama into Nashville, Tennessee.

The network's habitat variation includes barrier islands/seashores, coastal fresh to brackish marshes, bottomland hardwoods, cypress-tupelogum swamps, Mississippi River alluvial floodplain and loessal bluffs, rolling hill country and pastures, and the dry scrub/grasslands of Edwards Plateau.

This site provides access to study results, data, and related analysis about the natural resources investigated by the GULN network, its parks, research, and land management partners. Park managers use this information to make decisions about park resources.


Featured Information

Status of Water Quality within Big Thicket National Preserve

Water Quality Report

Water quality and quantity is monitored quarterly at six locations within the Preserve as directed by the GULN.
Sampling is performed at 13 sites proximal to the Preserve by the LNVA and at 6 stations in the Lower Neches River Valley by the USGS.
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Live Webcams
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Video: Inventory and Monitoring Across the National Park Service

Published Report:
Water Quality of San Antonio Missions National Historical Park

Water Quality of San Antonio Missions National Historical Park

In a semiarid land like south-central Texas, the spring-fed San Antonio River has been a cultural oasis for centuries. The importance of this water is evident throughout the 331 hectares (ha) of San Antonio Missions National Historical Park (SAAN).
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Generate a park species list

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What's the difference?

A Checklist A Checklist contains only those species that are designated as "present" or "probably present" in the park.

The Full List with Details includes all the Checklist species plus species that are unconfirmed, historically detected, or incorrectly reported in the park. The Full List also contains species that are "in review" because their status in the park hasn't been fully determined. Additional details about the status of each species is included in the Full List.

The Checklist will almost always contain fewer species than the Full List.

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Visit NPSpecies for more comprehensive information and advanced search capability. Have a suggestion or comment on this list? Let us know.

Last Updated: June 23, 2014 Contact Webmaster