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ORDER CLASSIFICATION OF URBAN CATCHMENTS 1
Author(s) -
Grigg Neil S.,
Sriburi Thavivongse
Publication year - 1978
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.1752-1688.1978.tb02126.x
Subject(s) - tributary , sanitary sewer , order (exchange) , hydrology (agriculture) , bifurcation , environmental science , mathematics , geography , geology , environmental engineering , cartography , geotechnical engineering , physics , nonlinear system , quantum mechanics , economics , finance
Stream order systems provide useful classification methods according to the number of tributaries collected. In urban catchments, sewer line order is a concepot concept providing for the same type of classification. Horton's stream order system is used to classify sewers beginning with the smallest lines as first order to the largest main sewer which is sixth order for two catchments studied. Average tributary area, average length and number of lines are shown as functions of order. The bifurcation ratios are also presented. They can be used for finding the number of sewer lines in the next order. The number of first order lines depend on lot size and the bifurcation ratios vary widely.