Lower Susquehanna NAWQA Fact Sheet

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National Water Quality Assessment Program - an overview

Pennsylvania State Fact Sheet

Susquehanna River Watershed - NYSDEC

USGS WRIR 98-4245: Distribution of Major Herbicides in Ground Water of the U.S.

national water-quality assessment program - USGS Water

PDF) Naturally occurring contaminants in the Piedmont and Blue Ridge crystalline-rock aquifers and Piedmont Early Mesozoic Basin siliciclastic-rock aquifers, Eastern United States, 1994-2008

USGS NAWQA STUDY UNIT CLICKABLE MAP

national water-quality assessment program - USGS Water

Susquehanna River's nitrogen levels threatening Chesapeake Bay - Baltimore Post-Examiner

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