1. What is this site and what does it do?
  2. How do I find the information I'm looking for?
  3. How do I use the interactive map?
  4. What is the state water planning process?
  5. How are the locations of the projects determined?
  6. Where does this data come from?
  7. Where can I access current and previous state water plans?
  8. Glossary
  9. About Us
  10. Site Policies
  11. Credits

What is this site and what does it do?

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This website is an integral part of the state water planning process that lets water users statewide take an up-close look at planning data and how water needs change over time. The user-friendly website, which is also easily viewed on most mobile devices, shows:

  • projected water demands,
  • existing water supplies,
  • the relative severity and projected water needs (potential shortages),
  • the water management strategies recommended to address potential shortages, and
  • recommended capital projects and their sponsors.

over the next 50 years in geographical and tabular forms. Note that all county-based water user group categories are mapped to the same location at the center of each county.

How do I find the information I'm looking for?

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A good place to start is the ‘View data for’ drop down menu found in the upper left of the home page. From this drop down you can navigate to pages with state water plan data organized by a specific area of interest or data type.

Once you’ve navigated to a specific page you can start exploring the data related to that topic/area. Each page will contain demand, existing supply, need (potential shortage), and strategy supply data related to that page topic. The data are presented in a variety of formats such as graphs, figures, tables, and maps. Many of the page elements are interactive so you can hover over and click elements to show more detail, use embedded search and sort functions to locate information, or click hyperlinks to navigate to other pages in the application. If you are interested in digging deeper and interacting more with the data on a page, scroll down to the ‘Raw Data’ section. In addition to reflecting the decade and theme button selections in the banner above the map, the data displayed in this section can be filtered and sorted using the drop-down boxes below the ‘Raw Data’ section heading. The column toggles allow you to control the aggregation levels of the data.

  • To change an existing column, update that selected drop-down to another item in the list
  • To remove an existing column, update that selected drop-down to the blank entry in the list
  • To add a new column, select it from the ‘Sub Dimension…’ drop down list

Additionally, you can filter by specific data within the table using the 'solo' feature. To do this, hover the mouse over the data element you wish to filter by until a 'solo' button appears. Selecting this feature will filter all the data in the table based on your selection. Multiple filters may be added using the same method, and all applied filters will be listed in the area above the column headers. To remove a solo filter, simply click the 'X' button to the left of the item listed in the area above the column headers.

Wholesale water provider (WWP) contract and sales data is collected, but not displayed in the 2022 Interactive State Water Plan since this application is designed to be a summary of water user group (WUG) data. Water management strategy supply being developed, but not assigned to a specific WUG is also collected and not displayed in the 2022 Interactive State Water Plan because that data is not included in recommended strategy supply totals in the state water plan. To find information related to WWPs and unassigned water volumes, click the following link to go to a TWDB webpage containing an Excel workbook summary of the 2022 State Water Plan data which includes that information here. You can also contact wrpdatarequests@twdb.texas.gov to request these types of datasets.

How do I use the interactive map?

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Interactive maps are included to view and explore the state water plan data geographically. Here are some tools that will help you navigate and use the maps:

  • Pan – To move the map; click and hold the left mouse button and drag the map to a new place.
  • Zoom – To see more details or a larger area on the map you can zoom in and out using the +/- sign buttons in the top right. Double left clicking your mouse on a map area will also zoom you into that location.
  • Statewide View – To quickly view all of Texas click on the button in the upper right with the Texas graphic.
  • Lock Extent – To freeze the map at a specific location and zoom level click the lock button on the right side of the screen. The button will darken when turned on and lock the map extent as you click through the different theme and decade buttons. This function may be turned off by clicking the lock button a second time.
  • Map Information – Symbol descriptions, notes, and disclaimers may appear just below the map panel to provide more information about what is being displayed.
  • Hover Labels – Some map items will display labels when you hover your mouse over them. Clicking on any of these items will navigate you away from the current page to a page related to that item in the interactive state water plan.
  • Decade Buttons – These are in the banner above the map and filter the map data by decade. For example, Project symbols will begin displaying on the map in the decade that matches the project’s online decade and continue to show in all subsequent decades.
  • Theme Buttons – These are in the banner above the map and filter the map data by type.
  • Symbol Popups – You can click on individual symbols to open a popup displaying data associated with that item. If there are overlapping symbols clicking on the cluster will cause them to spread out and allow you to select each one individually.

Due to the nature of the state water plan data, not everything is relevant to display on the map. Please keep the following in mind when exploring the interactive maps:

  • The map for a selected region page will only display projects that benefit water user group splits within that planning region.
  • Sources will only display in the map if at least one water user group has an existing supply or water management strategy supply amount greater than zero tied to it in the selected decade.
  • Only the following sources are mapped: groundwater, indirect reuse, reservoir, system, run-of-river, and seawater. Sources are mapped using either a point, line, or polygon to the general location of the source which is based on the best information available. For example, the Austin Off-Channel reservoir is mapped to the center of the City of Austin until a more specific location is provided.
  • The following sources are not mapped to a specific location: 'Direct Reuse', 'Local Surface Water Supply', 'Atmosphere', and 'Rainwater Harvesting'.
  • If a water user group is related to a zero value for a specific theme and decade it will not display on the map, except for WUGs with zero associated population on the project page. For example, the needs map theme will not display a WUG point if they have zero needs in the selected decade.
  • Information about recommended WMS projects that are not specifically associated with water user groups are displayed on the WMS Project application page although, because the water supply is not assigned to water user groups, neither the WMS project or associated supply will display on any of the other application pages until that strategy supply has been assigned to a water user group. These types of projects are recommended by the region to develop supply where a benefiting water user group has not yet been identified.

What is the state water planning process?

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Development of the state water plan is central to the mission of the TWDB. Based on 16 regional water plans, the plan addresses the needs of all water user groups in the state – municipal, irrigation, manufacturing, livestock, mining, and steam-electric power – during a repeat of the drought of record. The regional and state water plans consider a 50-year planning horizon.

Water planning in Texas starts at the regional level with 16 regional water planning groups, one for each of the 16 designated planning areas in the state. Each planning group consists of about 25 members who represent at least 12 interests, as required by Texas statute, including agriculture, industry, public, environment, municipalities, business, water districts, river authorities, water utilities, counties, power generation, and groundwater management areas.

During each five-year planning cycle, planning groups evaluate:

  • population projections,
  • water demand projections, and
  • existing water supplies that would be available during times of drought.

Planning groups identify

  • water user groups that will not have enough water during times of drought, and
  • recommend strategies and projects that could be implemented to address shortages, and
  • estimate the costs of these strategies.

While carrying out these tasks, planning groups assess risks and uncertainties in the planning process and evaluate potential impacts of water management strategies on the state's water, agricultural, and natural resources.

Once the planning groups adopt their regional water plans, they are submitted to the TWDB — the state's water supply planning and financing agency — for approval. TWDB then compiles the state water plan, which serves as a guide to state water policy, with information from the regional water plans and policy recommendations to the Texas Legislature. Each step of the process is open to the public and provides numerous opportunities for public input.

How are the locations of the projects determined?

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Water “projects” are the future capital investments in infrastructure that support water management strategies. Capital project symbols (red triangles) are mapped to a single point as a necessary simplification to represent a geographic location of each water project (e.g., well fields, reservoirs, pipelines) solely for the purposes of representing the water plan visually. The basis for selecting each representative location varied depending on the regional water plan and particular type of infrastructure but, in general, the default project locations relate to:

  • approximate locations of at least one component of major infrastructure such as dams, water treatment plants, water intakes for pipelines, or well fields proposed in the plan; or
  • the primary location of the water user group in which certain types of infrastructure would be located, such as some water treatment plants within a city or water conservation investments; or
  • the centroid of the county in which a project with dispersed infrastructure would be located, such as county-wide irrigation, mining, or manufacturing conservation projects; or
  • the centroid of a county-aquifer polygon for certain, generalized groundwater supply projects.
  • Although project triangles related to the source types ‘Direct Reuse’, ‘Local Surface Water Supply’, ‘Atmosphere’, and ‘Rainwater Harvesting’ may have a generalized location, the source is not mapped to a specific location.

The actual locations and physical extent of recommended projects will vary and, in many instances such as pipelines, will encompass multiple geographic locations and facilities.

Where does this data come from?

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All data presented are based on the Regional Water Planning Data Application used to collect data directly from the regional water planning groups.

Where can I access current and previous state water plans?

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Looking for the most current 2022 Interactive State Water Plan website? View it at https://2022.texasstatewaterplan.org.

Looking for an Excel workbook containing a summary of the 2022 State Water Plan data? Click the following link to go to a TWDB webpage where it is stored https://www.twdb.texas.gov/waterplanning/data/rwp-database/index.asp.

Looking for the 2017 Interactive State Water Plan website? View it at https://2017.texasstatewaterplan.org.

For past State Water Plans, please visit http://www.twdb.texas.gov/waterplanning/index.asp.


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Volume of water needed to cover 1 acre to a depth of 1 foot. It equals 325,851 gallons.


An aggregation of residential, commercial, and institutional water users in cities with less than 500 people or utilities that provide less than an average of 250,000 gallons per day, as well as unincorporated rural areas in a given county.


Term is generally applied to periods of less than average precipitation over a certain period of time. Associated definitions include meteorological drought (abnormally dry weather), agricultural drought (adverse impact on crop or range production), and hydrologic drought (below average water content in aquifers and/or reservoirs).


Period of time during recorded history when natural hydrological conditions provided the least amount of water supply. For Texas as a whole, the drought of record is generally considered to be from about 1950 to 1957.


Maximum amount of water available from existing sources for use during drought of record conditions that is physically and legally available for use.


Projected water demands in excess of existing water supplies for a water user group or a wholesale water provider. (i.e., potential shortage if no water management strategy is recommended).


Specific project or action to increase water supply or maximize existing supply to meet a specific need.


Portion of the demand for water that exceeds water supply after inclusion of all recommended water management strategies in a regional water plan.


Quantity of water projected to meet the overall necessities of a water user group in a specific future year.


Municipal WUGs in the 2021 Regional Water Plans (RWPGs) are defined as:

a) Privately-owned utilities that provide an average of more than 100 acre-feet per year for municipal use for all owned water systems;
b) Public water systems serving institutions or facilities owned by the state or federal government that provide more than 100 acre-feet per year for municipal use;
c) All other retail public water utilities not covered in paragraphs (a) and (b) that provide more than 100 acre-feet per year for municipal use;
d) Collective Reporting Units, or groups of retail public Utilities that have a common association and are requested for inclusion by the Regional Water Planning Groups (RWPGs); and
e) Municipal and domestic water use, referred to as County-Other, not included in paragraphs (a)-(d) of this subsection

About Us

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This website is a product of the Texas Water Development Board (TWDB). This project is part of our ongoing efforts to communicate information from the state and regional water plans to planners, scientists, policy makers, and the public.

TWDB is charged by the Texas Legislature with administering the regional water planning process and developing a state water plan every five years. The data presented are the result of that process and are based on the expertise of numerous people and organizations throughout the state of Texas who participated in development of the regional water plans, including the more than 450 regional water planning group members, consultants, and administrative agencies; staff of the TWDB; Texas Parks and Wildlife Department, Texas Department of Agriculture, Texas Commission on Environmental Quality, and Texas State Soil and Water Conservation Board; and the individuals and organizations that provided public input throughout the planning process.

Site Policies

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This website is an official TWDB ancillary website operated for authorized use only and provided as a public service. This policy describes the TWDB's privacy and security practices regarding information collected from visitors to the website, including what information is collected and how that information is used. Regardless of the information being transmitted to the TWDB, we will protect all such information consistent with applicable law. The privacy of our customers and the security of this website are of utmost importance to the TWDB.

Privacy Policy

The TWDB analyzes server logs for statistical purposes only and makes no attempt to personally identify website visitors. The TWDB does not collect any personally identifiable information, such as names, addresses, phone numbers or e-mail addresses, unless you choose to provide such information. Statistics such as time, date, or pages requested are used for accessing the information of most interest to users and identifying system performance or problem areas. This information is also gathered for anonymous File Transfer Protocol (ftp), remote account login, or for other comparable connections. Information that may be collected at this website through questionnaires, feedback forms, or other means, enables the TWDB to determine a visitor's interests, with the goal of providing better customer service.

All information collected, including server log information and information submitted on electronic forms, is subject to disclosure to others upon request according to the requirements of the Public Information Act (codified at Texas Government Code, Section 552.011, Vernon's 2000) and the State Government Privacy Policies Act (codified at Texas Government Code, Section 559, Vernon's 2001). Information collected by electronic mail and by web forms may be subject to the Public Information Act; however, email addresses of those who correspond with the TWDB are confidential and may not be disclosed unless the sender agrees to such. Exceptions to confidentiality may be reviewed at Texas Government code, Section 552.137.

By sending the TWDB an electronic mail message or submitting a web-based form, you may be sending the agency personally identifying information, such as name and address. In these cases, the TWDB may retain the information as long as necessary to respond to your request or otherwise resolve the subject matter of your e-mail. The TWDB may redirect your message to another government agency or person who is in a better position to answer your question as necessary. Please be aware that e-mails and web-based forms are not necessarily secure from third-party interception or misdirection. For your own protection, you may wish to communicate sensitive information using another method.

Review of Personal Information

An individual who submits information in electronic format through this website is entitled, on request, to receive and review the information that the TWDB collects about the individual, and to have TWDB correct the information. To make a request, please contact the following person:

Public Information Coordinator
Telephone: (512) 463-8061
Info Desk: (512) 463-7847
E-mail: publicinfo@twdb.texas.gov


For website security purposes and to ensure that this service remains available to all users, the TWDB employs monitors and filters to identify and block unauthorized attempts to upload or change information, or otherwise cause damage to the information on this website. Unauthorized access, modification, or destruction of this website are strictly prohibited and may be punishable under the Texas Penal Code Chapters 33 (Computer Crimes) or 33A (Telecommunications Crimes).

Website Link Policy

This website provides links to other websites, both public and private, for informational purposes. This policy does not apply whenever visitors leave the website and follow a link to another website, including the websites of other state agencies and local governments. Links to other websites from this website are provided solely as a courtesy. The TWDB has no control over the posting of material to such websites and cannot take responsibility for the validity of the content. The TWDB endeavors to follow the State Website Link and Privacy Policy, which addresses linking to and from state agency websites. TWDB encourages organizations that link to this website to comply with the provisions of the State Website Link and Privacy Policy, especially regarding protection of the privacy rights of individuals, and to make reasonable efforts to provide accessible websites.


A cookie is a small text file that resides on the user's hard drive, created at the request of the web server to track specific information. The website will use cookies to create session information to facilitate your use of the site. The information contained in these cookies is randomly created information and contain no personally identifiable information, so your anonymity is preserved. These cookies are not stored or tracked after the session ends.


With respect to documents or information available from this website, or documents or information from other servers made available through this website, neither the TWDB nor any of their employees, nor any of their contractors, subcontractors, or their employees, makes any warranty, express or implied, including the warranties of merchantability and fitness for a particular purpose, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, or represents that its use would not infringe privately owned rights.

TWDB makes no effort to independently verify, and does not exert editorial control over, information on pages outside of the website. TWDB advises website visitors to read the privacy policies of any third-party websites accessed through this website. TWDB does not endorse any of the products, vendors, consultants, or documentation referenced in this website. Any mention of vendors, products, or services is for informational purposes only.

Copyright Policy

The TWDB freely grants permission to copy and distribute its materials. The agency would appreciate acknowledgment.

Accessibility Policy

Due to current technology constraints, there are some instances where the TWDB is unable to provide information in an accessible format (e.g. mapping information).

Policy Intention

The intention of this policy is to state clear accessibility principles that all Texas Water Development Board (TWDB) websites must follow.

The TWDB strives to ensure all of its websites comply with the Web Content Accessibility Guidelines (WCAG) when possible without causing undue burden to the agency. The TWDB will be monitoring these sections and will develop accessible solutions as technology improves. In order to ensure no user is disadvantaged, the TWDB will respond to all accessibility assistance requests by either altering the necessary content as soon as possible or, if requested, by providing the information in an alternative format at no cost to the user within a reasonable timeframe. It is the responsibility of the webpage owner to provide these alternative formats. The TWDB websites will provide appropriate channels of communication that allow visitors to request alternative formats and to give feedback about any accessibility problems

Policy Dimensions

For the purpose of this policy, the term "websites" includes:

  • All websites (public and non-authenticated) managed and maintained by TWDB staff or on the behalf of TWDB, including, all external websites using the.twdb.texas.gov domain, agency ancillary sites, and social media sites.
  • All material associated with pages of the website such as documents, audio, video and any other additional files except for maps.
To Get Information in a Different Format

If you use assistive technology and the format of any material on our website interferes with your ability to access information, please send an e-mail to the TWDB Accessibility Coordinator.

When you contact us, please be sure to tell us each of these points:

  • the nature of your accessibility problem
  • the format in which you prefer to receive the material
  • the web address of the requested material
  • how we can contact you

With this information, we will be able to respond in the most helpful way possible.


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