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Longterm Response of Lakes to Acidic Deposition

by Jerald L. Schnoor, Univ of Iowa, United States,
Sijin Lee, Univ of Iowa, United States,
Konstantine P. Georgakakos, Univ of Iowa, United States,



Document Type: Proceeding Paper

Part of: Environmental Engineering

Abstract:

The longterm response of lakes in the northeastern United States to different levels of acidic deposition was predicted by using a lumped parameter hydrologic/biogeochemical model, the Enhanced Trickle-Down Model. Eighty-one lake watersheds were simulated for a 50-year period with constant levels of acid deposition and a 30 percent decreasing ramp function of acid deposition. Results indicated little response under constant loading, but seven percent of the lakes recovered from acidification when acid deposition was decreased. Uncertainty of the results was estimated via a first order second moment analysis.

Subject Headings: Lakes | Hydrologic models | Acids | Water pollution | Air pollution | Acid rain | Mathematical models | United States

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