Ontario has a comprehensive source water protection program that ensures drinking water safety from source to tap. This webpage provides an overview of the source water protection program, and contains links to municipality protection plans.
This is a source water protection project focused on evaluating the relationship between land-use practices and water quality in the St. Joseph River, a tributary of the western Lake Erie Basin.
The USGS's Daily Streamflow Conditions dataset includes data on streamflow at 9,936 sites across the United States.
The Streams and Waterbodies of the United States data layer shows the location of water features throughout the United States, Puerto Rico, and U.S. Virgin Islands
The Groundwater Contours of Michigan dataset includes individual county datasets of the elevation of the water table (first water) encountered every 30 meter across the landscape.
This document provides the goals for New York's state-wide source water assessment program plan to protect sources for New York 10,000+ water systems.
The New England Interstate Water Pollution Control Commission compiles source water assessment for interstate source waters, and provides GIS data. The document provides information on regulation, delineation, inventory, management, contingency planning, enforcement, and progress measurements.
The EPA's DWMAPS is an online mapping tool designed to help concerned citizens and resource managers find information about drinking water in their communities and take action to protect their source water.