The current USGS topographic maps are scaled at 1:24,000 also know as the 7.5 series. Each map is referred to as a quadrangle. If you are not sure which quadrangle you need click the link at the bottom and follow these instructions:

• Once you arrive at the USGS site type in the name of the location (city and state, mountain, national park, etc) you are searching in the search bar in the upper right corner.
• Click on the round 24k red button and the list will display the names of the quadrangles associated with that area.
• Use the zoom in and out button to see the quadrangle grids and names in an overlay of the map. 
• Once you have located the quadrangle you need simply type the name in the Quadrangle name field above , add it to your cart and we will get it printed up and shipped to you. It is that easy.
• 24" w x 30" H

https://ngmdb.usgs.gov/topoview/viewer/#4/39.98/-1...


If you have any questions please feel free to give us a call anytime at 830-438-4080 and we will be happy to assist you with the process of identifying the map you need.

• Source: UT Bureau of Economic Geology
• Depicts Surface Geology for Texas
• Includes a Cross Referenced Stratigraphic Column

Learn more about the geological history of the rocks around you! This full-color map presents surface rock outcrop information - age, depositional environment, rock type, and names of formations - and includes major highways, towns, and landmarks. A stratigraphic column and mileage chart fill out the front of the map and various cross sections, inset maps showing gemstone locations, places of geological interest, fossil localities and much more, cover the back.

• Paper or laminated
  
• Source: Texas Water Development Board
• Includes Rivers, Basins, Aquifers, Cities and Counties
• Great Resource to Study Texas Hydrology