Points of Interest: 
The mean annual precipitation over the basin is 38 inches and varies from about 27 inches in the northwestern extremity of the Basin to about 51 inches at the lower end. 

One of the principal goals of the Clean Rivers Program is the creation and maintenance of a comprehensive statewide water quality monitoring program.  Each CRP Planning Agency (such as the Trinity River Authority) is responsible for implementing such a monitoring program within their respective basins.  In the Trinity basin, there are many local entities which have been conducting fixed monitoring programs for years.  

	Monitoring Maps and Water Quality Data		Current Coordinated Monitoring Table
	click above to access maps and water quality data viewer		click above to see the current Trinity Basin monitoring schedule
	Trinity River Information Management System		TCEQ Surface Water Quality Data Viewer
	click above to access online GIS mapping capabilities		click above to access statewide water quality data through TCEQ

These entities monitor water quality for one of two primary reasons: (1) Water Supply Protection or (2) Municipal Storm Water Monitoring under TPDES permits. Although these programs have each been initiated, funded and are operated by autonomous entities for their own purposes, they collectively cover most of the Trinity River basin. 

Trinity River Basin CRP staff work with each of these agencies to incorporate their programs into the Clean Rivers Program and to get the data they produce into a common database format which can be easily shared among local and regional entities.  Utilizing this approach maximizes CRP funds, freeing money for special projects to address known or suspected water quality issues.   To date the cities of Arlington, Dallas, Fort Worth, Grand Prairie and Irving as well as TRA's Lake Livingston Program and the Tarrant Regional Water District are participating in the Trinity River basin CRP by submitting quality assured data.