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I am a civil engineer with a strong background in hydrology, mathematics, statistics, probability and data analysis, and the ability to lead and communicate information effectively and efficiently. I can also conduct research at multiple levels, working individually or in interdisciplinary groups, thinking in abstract, and coding in different programming languages. My main interests are extreme value analysis, probabilistic and statistical modeling, data analysis, stochastic models applied to hydrology and eco-hydraulics.

Work experience


University of Costa Rica (UCR)
  • Advanced hydrology (Licentiate in Civil Engineering)
  • Stochastic hydrology (Master of Science course in Hydraulic Engineering )
  • Hydrological processes and catchment modeling (Master of Science course in Hydraulic Engineering )

Hydrological data analyst

Costa Rican Electricity Institute (ICE)
  • Hydrological and sedimentological studies for hydropower development and environmental impact assessment.
  • Adaptive (compensatory) flow studies for hydropower development.
  • Sediment management and reservoir maintenance.
  • Planning and supervision of flushing maneuvers.
  • Hydraulic modeling of river reaches using one and two-dimensional models (e.g., HEC-RAS and Iber models).
  • Hydrological modeling using probability theory and data analysis methods.
  • Technical counseling to the Republic of Costa Rica Government in contentious proceedings before the International Court of Justice involving a claim of transboundary environmental damage arising from road works.

Hydrologist/ Hydraulic engineer

Setecoop R.L.
  • Hydrological studies for hydropower development.
  • Hydraulic design of small dams, intake structures, weirs, penstocks, and channels for hydropower development.
  • Feasibility studies and dam site selection using Geographical Information Systems

Engineering assistant

  • Hydrological studies.
  • Land development design.
  • Storm drain and sanitary sewer systems design.
  • Irrigation and drinking water distribution systems design.

Research assistant

National Laboratory of Materials and Structural Models (LANAMME-UCR) - University of Costa Rica
  • Spatial analysis using Geographical Information Systems
  • Maintenance of the national bridge database

Research assistant

Seismic Engineering Laboratory (LIS-UCR) - University of Costa Rica
  • Earthquake mapping using GMT (Generic Mapping Tools) software.

Main projects

Change in the runoff pattern in the upper basin of the Tempisque River under climate change scenarios

Statistical downscaling of precipitation and temperature monthly time series from General Circulation Model's (GCM) was conducted via Principal Component  Analysis (PCA), Canonical Correlation Analysis (CCA), and Delta Scheme. The downscaled time series served as input to a water balance model, and the change in the mean value of runoff was estimated for two different time horizons.

  • Leitón-Montero, J.J (2011). Change in the runoff pattern in the upper basin of the Tempisque River under climate change scenarios. Licentiate thesis. The University of Costa Rica.

Report on hydrology and sediments for the Costa Rican river basins draining directly to the San Juan River

Conceptualizing, planning, and conducting hydrological and sedimentological studies in the San Juan river basin to determine the average liquid and solid discharge regimes and build detailed sediment budged for the main basin system using the Universal Soil Loss Equation (USLE).

  • Technical counseling to the Costa Rican legal team during the oral proceedings before the International Court of Justice at The Hague, The Netherlands (April 2015).

Methodology for the determination of adaptive flow

Regionalization of hydrological descriptors (mean annual runoff, variance, and flow duration curves) in three Costa Rican basins using the hydrostochastic interpolation approach.

  • Krasovskaia, I., Gottschalk, L., Leitón-Montero, J.J., Zuñiga-Mora, J.A. & Leblois, E. (2014). REGINA - Regionalisation of hydrological descriptors. In I. Krasovskaia & L. Gottschalk (Eds.), Compensatory Flow Phase 2: Methodology for the determination of adaptive flow - Final Report. (English edition, pp. 25-79). San José, Costa Rica: Costa Rican Electricity Institute.

Statistical analysis of multi-model climate projections with a Bayesian hierarchical model over Europe

A hierarchical Bayesian model was used to analyze the seasonal temperature and precipitation projections over the PRUDENCE regions of the CH2018 multi-model ensemble (RCP8.5). The implementation of this model expands the work done by Kerkhoff (2014), Tay (2016), and Künsch (2017) by evaluating both temperature and precipitation variables for every region-season combination.

Posterior distributions for the parameters associated with bias assumption coefficients, climatological means, inter-annual variability, and additive bias were estimated. Similarly, climate change estimates were calculated, for five different time horizons, with respect to 1995. A generalized variation pattern was found for temperature along all the region-season combinations analyzed, while season-dependent and region-dependent patterns were identified for precipitation.

Reduction of the absolute additive bias due to dynamical scaling was evaluated by comparing the bias components associated with the RCM-GCM chains and their corresponding drivers. Results were evaluated in terms of the probabilities of reducing at least 20% in the said component, and region-season-chain combinations were classified based on this value.

  • Leitón-Montero, J.J. (2017). Statistical analysis of multi-model climate projections with a Bayesian hierarchical model over Europe. Master thesis. ETH Zürich


Master's degree in Mathematics with emphasis in Applied Mathematics (currently enrolled)

University of Costa Rica
  • Thesis pending

Master's degree in Statistics

Eidgenössische Technische Hochschule Zürich (ETHZ)
  • Master thesis: Statistical analysis of multi-model climate projections with a Bayesian hierarchical model over Europe.

Licentiate's degree in Civil Engineering

University of Costa Rica
  • Graduated with honors
  • Licentiate's thesis: Change in the runoff pattern in the upper basin of the Tempisque River under climate change scenarios.


Quantitative risk management
  • Extreme value analysis
  • Time series analysis
  • Multivariate models
Hydraulic modelling
  • One and two-dimensional hydraulic modeling for river modeling and environmental impact assessment studies
Statistical modelling
  • Generalized linear models (time-series models, geostatistical models, Spatio-temporal models)
  • Extreme value analysis
  • Multivariate statistics (PCA, CCA, ICA, MDS)
  • Cluster analysis (k-means, fuzzy clustering, hierarchical clustering, DBSCAN, OPTICS)
  • Hierarchical bayesian models
R programming
  • Data wrangling
  • Data visualization
  • Statistical modeling
  • Probabilistic modeling
Geographic information system (GIS)
  • Hydrological analysis
  • Spatial and geostatistical analysis


Prof. Hans-Rudolf Künsch, PhD                     
Eidgenössische Technische Hochschule Zürich

Prof. Lars Gottschalk, PhD                     
Wuhan University

Prof. Etienne Leblois, PhD

Prof. Colin Thorne, PhD
The University of Nottingham

Eng. Alberto Serrano Pacheco, PhD
University of Costa Rica