Determination of the groundwater vulnerability index in Novo Hamburgo (RS)
Keywords:
GOD Index, Aquifer, Groundwater.Abstract
The municipality of Novo Hamburgo is located in the metropolitan region of Greater Porto Alegre (RS) and has a high consumption of water from underground springs. This makes it important to analyze the natural vulnerability of this aquifer. To do this, the GOD index was used to analyze it, as this index has easy-to-acquire parameters: type of aquifer, lithology of the layer above the saturated zone and depth to the top of the saturated layer. For the municipality, 84 wells were registered in the SIAGAS database, from where the index data was acquired. Of these wells, 81 are in the low class and 3 are in the medium class of the index. Based on the GOD index, the municipality does not have any areas with high natural vulnerability to aquifer contamination, but further work relating the index to land use in the municipality is recommended.
