Online Resources

Lone Star GCD is a great resource on all things groundwater and water conservation. We have information for kids and teachers, publications, outside links and maps. 

We work to keep this information relevant and current but note that at times outside links do change, which is beyond our control. If you see a broken link, feel free to contact us!


+ Classes and Events

The Arbor Gate
Montgomery County AgriLife Extension
Montgomery County Master Gardeners
Texas AgriLife Extension Service
The Woodlands Township

+ Native Plants

Lady Bird Johnson Wildflower Center
Native Plant Society of Texas
Texas SmartScape

+ Rainwater Harvesting

American Rainwater Catchment Association
Take Care of Texas Rainwater Harvesting
Texas A&M Rainwater Harvesting
Texas Rainfall Catchment

+ Government Agencies

Texas Water Development Board (TWDB)
Texas Commission on Environmental Quality (TCEQ)
Texas Department of Licensing and Regulation
Texas State Auditor
United States Geological Society (USGS)

+ Engineering/Surveying Organizations

Bleyl & Associates
Brown and Gay Engineers, Inc
Cobb Fendley and Associates
Freese and Nichols
Halff Associates, Inc.
Jones & Carter, Inc.
LBG Guyton & Associates

+ Conservation

Water-Use it Wisely
Texas Manual on Rainwater Harvesting 3rd Edition
Texas Water Resources Institute – Conservation Matters
Best Management Practices Guide – Texas Water Advisory Council
Gulf Coast/Montgomery County Water Efficiency Network

+ Groundwater Levels

Lone Star Static Well Level Monitoring Network Map
USGS Static Water Level Measurements
USGS Real Time Water Level Measurements
USGS Texas Groundwater Data
Texas Water Development Board Groundwater Database

+ USGS Commissioned Reports

Hydrogeology and Simulation of Groundwater Flow and Land-Surface Subsidence in the Northern Part of the Gulf Coast Aquifer System, Texas, 1891-2009
Estimated Land-Surface Subsidence in Harris County, Texas, 1915-17 to 2001
Water-Level Altitudes 2009 and Water-Level Changes in the Chicot, Evangeline, and -Jasper Aquifers and Compaction 1973-2008 in the Chicot and Evangeline Aquifers, Houston-Galveston Region, Texas
Water-Level Altitudes 2010 and Water-Level Changes in the Chicot, Evangeline, and Jasper Aquifers and Compaction 1973-2009 in the Chicot and Evangeline Aquifers, Houston-Galveston Region, Texas

Area Rainfall



Captain Plop’s Water Saving Mission

Join Captain Plop, water-saver extraordinaire, on a free and flushingly wet adventure through the underworld of Emily and Luke’s home!


H2O Tracker 

Does it take more water to take a bath or wash a car? Do you use more water than the average Joe? Do you know how to save up to $200 on your water bill each year? H2OTracker is a water conservation game that helps you estimate water use in and around your house so you can conserve, save money and earn points toward prizes! Track your water use and score!  Want to know the dos and don’ts during a drought? This version will help you know exactly what restrictions are in place for each drought stage. It will also help you learn about snowpack and reservoir levels and why they are critical to our drinking supply.


Rain Harvest

Have you ever wondered how much rain falls on your roof during a typical rain storm? Use this simple rain harvesting calculator to find out. You will be amazed at how much water can be collected from your roof (or any other surface) during even the shortest of rain storms. Why not collect and store this wonderful natural resource and put it to good use later to water your organic garden?


Water Use Calculator

If you’ve ever wondered how much water you use compared to the average person, check out the Water Usage Calculator from The National Ground Water Association. This free iPhone app allows users to see how many gallons of water are being used by answering a few simple questions. This app not only shows you how much you’re using, but it shows you where you are using it (e.g., dishwasher, toilet, shower, lawn and more). After checking out this app, one user was floored to see that her family was using nearly 200 gallons more than the average family due to those long, hot showers.