Partial table of contents:

WATER QUALITY TRENDS.

Review of Methods for the Detection and Estimation of Trends with Emphasis on Water Quality Applications (S. Esterby).

Trends in the Chemistry of Precipitation and Surface Water in a National Network of Small Watersheds (B. Aulenbach, et al.).

Pathogenic Agents in Freshwater Resources (E. Geldreich).

Trends in Groundwater Quality (J. Loftis).

GEOCHEMICAL MASS BALANCE.

Atmospheric Deposition to Watersheds in Complex Terrain (G. Lovett, et al.).

Comparison of Methods for Calculating Annual Solute Exports from Six Forested Appalachian Watersheds (B. Swistock, et al.).

Application of the Geographical Information Systems Approach to Watershed Mass Balance Studies (P. Richards & L. Kump).

Nitrogen Fluxes in a High Elevation Colorado Rocky Mountain Basin (J. Baron & D. Campbell).

Sulfur and Nitrogen Budgets for Five Forested Appalachian Plateau Basins (C. Dow & D. DeWalle).

Index.