Posts tagged #water resources

How much does a groundwater modeler cost?


After my last job as a staff groundwater modeler I have received 6 unsolicited job offerings. Of course many modelers with more years and more conections than I have received much more offers, however, I feel happy with my humble record. The point of this comparison is that senior groundwater modelers with experience in mining hydrogeology are really scarce. Mining and consultant companies are looking for talented groundwater modelers, and somehow there are not much modelers coming out from the universities.




Why is MODFLOW better than other softwares for groundwater modelling?


MODFLOW is the groundwater modelling software developed by the U.S. Geological Survey (USGS). It appeared in 1984 and has had a constant developement till now. MODFLOW's capacities allow the representation of regional or local groundwater flow and its interaction with superficial water bodies.

Posted on October 3, 2013 and filed under Hydrogeology, Modeling.



Geostatistics on water resources investigation

Before talking about the different researches that have had as main focus the water resources, I think it is necessary to explain first what geostatistics is.

Geostatistics is a type of statistics that is used in order to analyze and interpret geographically referenced data. It is not restricted to only work with point data, but can also work with GIS layers to explore spatial variation, improving generation of digital elevation models (DEM) and their respective simulations, optimization of spatial sampling, etc.

Posted on October 3, 2013 and filed under Hidrology, Modeling.



What about landsat LDCM for water resources?


A new Landsat satellite was launched one Monday (Feb. 11, 2013) from the Vanderberg Air Force Base in California. The LDCM or Landsat Data Continuity Mission joined the 15-year-old Landsat 7 and the 30-year-old Landsat 5. Since satellites are attracted by earth gravity, the launch of new satellites is important to preserve the continuity of the image registration.



Groundwater monitoring system implementation

A monitoring system is a platform where the level and quality records that describe groundwater resources are generated, made available and evaluated. These records are consistent, representative and long lasting. To manage the aquifer on a local or regional level it is required to have environmental managers with easy access to comprehensive, representative and reliable information.



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.



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).



Why consultants, mines and organizations should migrate to QGIS?

At the beginning it was not easy to get used to the QGIS environment, and sometimes I just did some basic stuff, and then shift to ArcGIS to complete my work. The real jump to QGIS was the second time I taught “GIS on Water Resources Managenment” course at PUCP in Lima. In a moment of academic, artistic and open minded inspiration I decided to change the GIS software from ArcView to QGIS. The logic behind that was: if I gave the course in QGIS, I would end learning QGIS as well. The university environment allows you to make these kind  of experiments.

Posted on September 28, 2013 and filed under GIS.