Regional Water Plan: Region H, 2016, Volume 1. Main Report Page: 1-14
1809 p. : ill. ; 28 cm.View a full description of this report.
Extracted Text
The following text was automatically extracted from the image on this page using optical character recognition software:
November 2015
Yegua Formation and the Jackson Group comprise the Yegua-Jackson aquifer, located in parts of
Madison, Walker, Trinity, and Polk Counties. The Brazos River alluvium occurs along the main stem
of the Brazos as it passes through the region, except in Brazoria County. Figure 1-3 and Figure 1-4
illustrate these groundwater sources. Groundwater withdrawals accounted for approximately 34
percent of the total regional water supply in 2000 and approximately 37 percent in 2010.
Groundwater use is regulated in Harris, Galveston, Fort Bend, and Montgomery Counties due to the
potential for over-drafting of the Gulf Coast Aquifer and related subsidence and water level impacts.
For these areas, the availability of groundwater is determined by the regulatory plans developed for
each county or area in accordance with the goals of each regulating entity; the Harris-Galveston
Subsidence District, the Fort Bend Subsidence District, and the Lone Star GCD. In addition,
Groundwater Management Plans have been published for Austin, Brazoria, Leon, Madison, Polk,
Trinity, Walker, and Waller Counties by the Bluebonnet, Brazoria County, Mid-East Texas and Lower
Trinity GCDs. The active GCDs and Subsidence Districts within Region H are shown on Figure 1-5.
Region H is divided into Groundwater Management Areas (GMAs) 11, 12, and 14. Trinity County lies
within GMA 11. GMA 12 encompasses the areas of Leon and Madison Counties with all other Region
H Counties falling within GMA 14. All three GMAs are currently in the process of updating their
Desired Future Conditions (DFCs) for their relevant aquifers which will be used to determine the
Modeled Available Groundwater (MAG) for incorporation into planning documents for the GCDs
within each GMA.
1.4.2 Surface Water Sources
Surface water sources in Region H are reservoir storage and run-of-river supply for the three rivers in
the area: the Trinity, the San Jacinto, and the Brazos. There are no major springs located within Region
H, although small springs and seeps supply base flows for some streams. Historically there were
numerous small seeps identified throughout the region. Many of these have ceased flowing due to
land use changes and groundwater pumping.
Figure 1-6 illustrates the region's surface water sources. A selected bibliography of related references
is included in Appendix 1-A.Region H 2016 Regional Water Plan
Chapter 1 - Description of Region
1-14
Upcoming Pages
Here’s what’s next.
Search Inside
This report can be searched. Note: Results may vary based on the legibility of text within the document.
Tools / Downloads
Get a copy of this page or view the extracted text.
Citing and Sharing
Basic information for referencing this web page. We also provide extended guidance on usage rights, references, copying or embedding.
Reference the current page of this Report.
Region H Water Planning Group. Regional Water Plan: Region H, 2016, Volume 1. Main Report, report, November 2015; Conroe, Texas. (https://texashistory.unt.edu/ark:/67531/metapth838720/m1/62/: accessed July 16, 2024), University of North Texas Libraries, The Portal to Texas History, https://texashistory.unt.edu; crediting UNT Libraries Government Documents Department.