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Service Description: <div style='text-align:Left;'><div><div><p><span>This map displays the 211 major reservoirs including Elephant Butte in New Mexico as defined by the Texas Water Development Board (TWDB). Major reservoirs are surface water bodies with a storage capacity exceeding 5,000 acre feet.</span></p><p><span>The map is intended for visualization and review of statewide surface water resources and to support planning, decision making, and communication related to TWDB water supply and flood prevention strategies. Prepared for internal use and data sharing in July 2026.</span></p></div></div></div>

Map Name: TWDB MajorReservoirs 2026

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Description: This map displays the 211 major reservoirs including Elephant Butte in New Mexico as defined by the Texas Water Development Board (TWDB). Major reservoirs are surface water bodies with a storage capacity exceeding 5,000 acre feet.The map is intended for visualization and review of statewide surface water resources and to support planning, decision making, and communication related to TWDB water supply and flood prevention strategies. Prepared for internal use and data sharing in July 2026.

Service Item Id: 2717f0c782bf469fb9917c5863cd0383

Copyright Text: Texas Water Development Board (TWDB), Surface Water Division – Water Availability Department members Nelun Fernando and John Zhu with Josi Robertson, Holly Holmquist, Erik O'Brian

Spatial Reference: 4269  (4269)


Single Fused Map Cache: false

Initial Extent:

XMin: -109.99426797806379
YMin: 23.66736686065807
XMax: -87.3546493987246
YMax: 38.736751911897954
Spatial Reference: 4269  (4269)

Full Extent:

XMin: -107.2144357247289
YMin: 25.980874897158856
XMax: -93.56353743450495
YMax: 36.36163061216308
Spatial Reference: 4269  (4269)

Units: esriDecimalDegrees

Supported Image Format Types: PNG32,PNG24,PNG,JPG,DIB,TIFF,EMF,PS,PDF,GIF,SVG,SVGZ,BMP

Document Info:

Title: TWDB Major Reservoirs 2026
Author:
Comments: This map displays the 211 major reservoirs including Elephant Butte in New Mexico as defined by the Texas Water Development Board (TWDB). Major reservoirs are surface water bodies with a storage capacity exceeding 5,000 acre feet.The map is intended for visualization and review of statewide surface water resources and to support planning, decision making, and communication related to TWDB water supply and flood prevention strategies. Prepared for internal use and data sharing in July 2026.
Subject: This map presents the major reservoirs in Texas plus Elephant Butte in New Mexico for 2026. It is designed to support visualization, review, and analysis of statewide large reservoirs that is equal to or greater than 5,000 acre feet in capacity.
Category:
Keywords: Surface Water,Major Reservoirs,Reservoirs,Texas,TWDB
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Supported Query Formats: JSON, geoJSON, PBF

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