Posts tagged #water

Water and mining conflicts in the information age

My father was an olive farmer and very active on the valley olive farmer association in Peru. In the eighties, there was a tailings spill that afected the river water and the irrigated lands. Based on what they could understand of contamination and water chemistry, they had the iniciative of taking water samples and show them to water authorities.

Posted on February 10, 2014 and filed under Environment, Mining, Water management.

 

 

Soil cover system design for mine waste dumps

 

Surface water and groundwater surrounding a mining operation can be significantly affected by contaminated seepage from the Acid Rock Drainage (ARD) in the waste-dumps and tailings deposits. An evaluation for prevention and mitigation of environmental impacts generated by the DAR is necessary to minimize the impact to the environment.

Posted on October 4, 2013 and filed under Mining, Water quality.

 

 

Cost (& Time) optimization of hydrogeological studies

Impact on groundwater flow from mining facilities could be evaluated many times alongs the different mining phases, many of these evaluation are done by different consultant companies. This post is focused on strategies and best practices for cost (& time) optimization, specially for hydrogeological investigation on mining projects.

 

 

Isotope investigation for understanding groundwater flow regime

 

Environmental isotope investigation is a tool for understanding the regional groundwater flow and confirms or refutes the inferred relations between aquifers. Isotope investigation can give information about groundwater sources, ages, travel times and flow paths.

Posted on October 3, 2013 and filed under Hydrogeology.

 

 

To learn MODFLOW with MODEL MUSE

 

MODFLOW is the software for groundwater modeling developed by the USGS. The software is capable of representing conditions related to groundwater flow as evapotranspiration, recharge, drainage, river interaction among others. Its finite different approach gives the capability of calculating the flow regime with exceptional control on water budget discrepancy. 

Posted on October 2, 2013 and filed under Modeling.

 

 

Main predictive simulations for an EIA in mining

 

Impact assessment of mining projects on groundwater resources can be a challenging task due to uncertainty on groundwater flow regime, the complex numerical tools to successfully simulate stresses on groundwater resources posed by mining projects, and timeframe and budget of the EIAs.

 

 

Feasibility and environmental assessment of hydropower plants

 

Hydropower is the energy source that requires no fossil fuels and doesn´t present carbon emissions to the environment in its operational stage. Within the global energy framework there is great demand for both types of energy, renewable and non-renewable, and a special interest in the search of undeveloped hydroelectric resources in high potential and the Andean countries.

Posted on October 1, 2013 and filed under Hydraulic.

 

 

Environmental flow determination by hidrological modeling

 

The world water legislation has a common challenge: distribute fresh water resources in a fair, efficient and sustainable way. Traditionally, agriculture, industry, mining and municipalities have competed for these limited resources. The old legal structures were created to satisfy economic and domestic use of water demands ignoring the ecosystem use, that until recently were not fully scientifically understood.

Posted on October 1, 2013 and filed under Modeling.

 

 

Climate change impact on watershed response

Mathematical models of global climate can reproduce many aspects of the physical climate system. General Circulation Models (GCMs) simulate physical processes in the atmosphere, ocean, cryosphere, and on the land surface. Predictive scenarios on climate change will be applied to selected GCM models and their output will be used on the PRMS hydrologic simulations.

Posted on October 1, 2013 and filed under Hidrology.

 

 

Development of a watershed-based water balance

 

Water balance is known as the balance of water entering the system and the water that leaves within a specified time, however, in order to understand it better we need to understand: what is a watershed? Unterstood as a whole, a unity, as a system, as the space bounded by the union of all the headers that form the main river through the territory drained by a single natural drainage system.

 

 

Case studies of watershed-based water balance

 

A watershed can be defined as “the topographic area within which apparent surface water runoff drains to a specific point on a stream or to a waterbody such as a lake” (Shimon, 2010), in this way a watershed works as a large water collector converting water inputs into runoff and water storage (Chavarri, 2012).