Watershed Management
- Model Watershed Rules and Regulations (.pdf).

NYC Watershed rules and regulations
- See the NYSDOH web pages.

Sole source aquifer

Sole or Principal means that the aquifer is needed to supply 50% or more of the drinking water for the aquifer service area, and that the volume of water which could be supplied by alternative sources is insufficient to replace the sole or principal aquifer should it become contaminated.

From EPA, Sole Source Aquifer Designation Petitioner Guidance, February 1987, EPA 440/6-87-003

EPA documents can be ordered from the EPA.