Where can I find detailed sampling methods for surface water and ground water?
USGS protocols for the collection of ground-water and surface-water samples have been published in the report National Field Manual for the Collection of Water-Quality Data.. The National Field Manual was published in chapters, and copies of this Techniques of Water-Resources Investigations, Book 9, handbook can be ordered by calling 1-888-ASK-USGS or at Ordering U.S. Geological Survey Products.