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Special Contributing Area Loading Program user’s manual

September 23, 2026

Information on the Special Contributing Area Loading Program execution and functions are presented in this user’s manual. An appendix presents a potential improvement for the user to consider. The hydrologic routing simulation method to model flow through multiple reservoirs, or sewer system components, is described. The use of Special Contributing Areas is described to run a successful simulation, which includes user input of hydrologic time series of flow components and the necessary formats. Upon completion of a successful Special Contributing Area Loading Program simulation, the program outputs hydrologic time series and a descriptive text file containing the model results for each defined sub-unit, or Special Contributing Area. The output time series contain flows through, and overflows from, the three reservoirs in the series, and the text file contains input and output path locations.

Publication Year 2026
Title Special Contributing Area Loading Program user’s manual
DOI 10.3133/ofr20261030
Authors Richard J. Huizinga, David H Dupre
Publication Type Report
Publication Subtype USGS Numbered Series
Series Title Open-File Report
Series Number 2026-1030
Index ID ofr20261030
Record Source USGS Publications Warehouse
USGS Organization Central Midwest Water Science Center
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