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Three-dimensional finite-difference model of ground-water system underlying the Muskegon County wastewater disposal system, Michigan

August 18, 1978

The spray irrigation system used by Muskegon County for wastewater treatment is the largest of its kind in the United States. It has 2200 hectares of irrigated farm land, 688 hectares of treatment lagoons, and 105 kilometers of drainage tile. The system has a design capacity of 1.8 cubic meters of wastewater per second. A three-dimensional finite-difference model was developed to study the effect of the disposal operation on ground-water conditions. Model calculations show that the water table at and adjacent to most of the wastewater site is lower as a result of the operation of the system to date. However, along the northwest boundary of the site, where irrigated land was not undertiled, the water table is 1 to 2 meters higher than it would be under natural conditions. Predictive simulations indicate that, even if the drainage tiles lost 75 percent of their effectiveness, the impact of disposal operations on ground-water levels would be negligible outside of the wastewater site.

Citation Information

Publication Year 1978
Title Three-dimensional finite-difference model of ground-water system underlying the Muskegon County wastewater disposal system, Michigan
DOI
Authors Michael G. McDonald, William B. Fleck
Publication Type Article
Publication Subtype Journal Article
Series Title Journal of Research of the U.S. Geological Survey
Series Number
Index ID 70176608
Record Source USGS Publications Warehouse
USGS Organization Michigan Water Science Center