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POLLUTANT LOADS IN URBAN STORMWATER: REVIEW OF METHODS FOR PLANNING‐LEVEL ESTIMATES 1
Author(s) -
Marsalek Jiri
Publication year - 1991
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.1752-1688.1991.tb03133.x
Subject(s) - surface runoff , environmental science , stormwater , urban runoff , pollutant , calibration , nonpoint source pollution , hydrology (agriculture) , computer science , engineering , statistics , ecology , chemistry , mathematics , geotechnical engineering , organic chemistry , biology
A review of methods for planning‐level estimates of pollutant loads in urban stormwater focuses on transfer of charac. teristic runoff quality data to unmonitored sites, runoff monitoring, and simulation models. Load estimation by transfer of runoff quality data is the least expensive, but the accuracy of estimates is unknown. Runoff monitoring methods provide best estimates of existing loads, but cannot be used to predict load changes resulting from runoff controls, or other changes of the urban system. Simulation models require extensive calibration for reliable application. Models with optional formulations of pollutant build up, washoff, and transport can be better calibrated and the selection of options should be based on a statistical analysis of calibration data. Calibrated simulation models can be used for evaluation of control alternatives.