Regional Water Board fact sheets on regional monitoring strategies:

• Region 1 - North Coast Region
• Region 2 - San Francisco Bay Region
• Region 3 - Central Coast Region
• Region 4 - Los Angeles Region
• Region 5 - Central Valley Region
• Region 6 - Lahontan Region
• Region 7 - Colorado River Basin Region
• Region 8 - Santa Ana Region
• Region 9 - San Diego Region