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SUSPENDED SEDIMENT AND METALS REMOVAL FROM URBAN RUNOFF BY A SMALL LAKE 1
Author(s) -
Striegl Robert G.
Publication year - 1987
Publication title -
jawra journal of the american water resources association
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.957
H-Index - 105
eISSN - 1752-1688
pISSN - 1093-474X
DOI - 10.1111/j.1752-1688.1987.tb00848.x
Subject(s) - sediment , surface runoff , silt , environmental science , cadmium , mercury (programming language) , hydrology (agriculture) , urban runoff , aquatic ecosystem , environmental chemistry , suspended solids , zinc , environmental engineering , geology , stormwater , ecology , wastewater , chemistry , geomorphology , geotechnical engineering , organic chemistry , computer science , biology , programming language
A small lake in the Chicago Metropolitan Area was from 91 to 95 percent efficient in removing suspended sediment and from 76 to 94 percent efficient in removing copper, iron, lead, and zinc from urban runoff. Sediments accumulated in the lake in the form of an organic‐rich mud at an average rate of 20 millimeters per year; this reduced lake storage and covered potential habitat for aquatic organisms. Copper, lead, and zinc concentrations were closely associated with suspended‐sediment concentrations and with silt‐ and clay‐sized fractions of lake sediment. Although concentrations of mercury and cadmium were near detection limits in runoff, measurable concentrations of these metals accumulated in the lake sediments.