Precipitation and Lake Evaporation Data for Texas

Monthly and annual precipitation and lake evaporation rates are provided at this site for each one-degree quadrangle in and adjacent to Texas.  Precipitation data are available from 1940 through 2010 while gross lake surface evaporation data are available from 1954 through 2010. These quadrangle data were computed from all available raw data collected by the National Weather Service and by the Texas Water Development Board. More information on the computing program is provided here. Please refer to the map below when determining reference quadrangle numbers.
For bigger map:
Enlarged Map using Adobe (pdf)
Enlarged Map (Other)

Instructions:
1) Enter the quadrangle number of interest in the textbox below,
2) Select output format, and
3) Click on "SUBMIT" button.

Enter Quadrangle Number:

Select Output Format:
Evaporation Data - Tabular Evaporation Data - Columnar 
Precipitation Data - Tabular  Precipitation Data - Columnar 
Evaporation & Precipitation Statistics 
Evaporation & Precipitation Graphs (gif format) 

 
 

For more information, please contact Public Information at: publicinfo@twdb.texas.gov