Design of water quality monitoring networks with two information scenarios in tropical Andean basins
Biological Oxygen Demand Analysis
Tropical Climate
Water Pollution
0207 environmental engineering
02 engineering and technology
Colombia
Models, Theoretical
15. Life on land
6. Clean water
Rivers
13. Climate action
Water Quality
Geographic Information Systems
14. Life underwater
Environmental Monitoring
DOI:
10.1007/s11356-017-9021-6
Publication Date:
2017-04-21T14:50:35Z
AUTHORS (4)
ABSTRACT
Design and redesign of water quality monitoring networks were evaluated for two similarly sized watersheds in the tropical Andes via optimization techniques using geographic information system technology (GIS) and a matter-element analysis of 5-day biological oxygen demand (BOD5) and total suspended solids (TSS). This resulted in a flexible, objectively based design for a 1128-km2 watershed without prior water quality data (La Miel River), and a network redesign of a 1052-km2 watershed with historical water quality monitoring (Chinchiná River). Monitoring design for the undocumented basin incorporated mathematical expressions for physical, anthropological, and historical factors-and was based on clear objectives for diagnosis and intervention of water pollution. Network redesign identified network redundancy, which resulted in a 64% reduction in the number of water quality monitoring stations along the channel, and a 78% reduction of stations throughout the basin. Most tropical drainage basins throughout the world have little to no prior water quality data. But even in well-studied drainage basins like the Chinchiná River, which is among the most thoroughly studied basins in Colombia, redesign of historical and existing monitoring networks will become a standard tool to advance the restoration of polluted surface waters, not only in Colombia, but also throughout the world.
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