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Olga Nikolova Nitcheva - Mileva

Position: Associate Professor

Departmen: Fluid Mechanics

Room number: 224

Phone: +359 2 979 6433



Scientific degrees, institution, year:


  • Assoc. Prof., IMech, BAS, Sofia, 2018
  • Ph. D, UACEG, Sofia, 2007
  • MSc, IWP, BAS, Sofia, 1999
  • MEng, UACEG, Sofia, 1988


Fields of Research:

Integrated Water Resources Management:

  • Hydrology and soil water movement processes modeling aiming at evaluation of surface runoff and groundwater recharge of river basins using satellite obtained  digital data;
  • Assessment and management of the nitrogen pollution of  farming lands caused by the agriculture;
  • Field and laboratory work for detection of industrial and agricultural contamination of soils and surface waters.

Extended Information:

Recent Publications:

  1. Nitcheva O. (2018) Hydrology models approach to estimation of the groundwater recharge. Case study in the Bulgarian Danube Watershed. Springer, Environmental Earth Sciences Journal 77: 464,,  ISI IF 1.44;
  2. Nitcheva O., Milev B., Trenkova T., Philipova N., Dobreva P., Koutev V. „Calibration of the Land Surface Model (CLM) throught satellite observed soil moisture (ESA-SM) in Bulgaria“, Proceedings for the 2017 EUMETSATMeteorological Satellite Conference, 2-6 October 2017, Rome, Italy;
  3. Nitcheva O., Milev B., Trenkova T., Philipova N., Dobreva P. (2018), „Kamchia watershed groundwater recharge assessment by the CLM3 model“, NCTAM conference proceedings, Matec, SJR 0.15;
  4. Stoyanova M., Kandilarov A., Koutev V., Nitcheva O., Dobreva P. „Potential of multispectral imaging technology for assessment coniferous forests bitten by a bark beetle in Central Bulgaria“. 145, MATEC Web of Conferences, 2018, DOI:, SJR:0.15
  5. Nitcheva, O., Milev B., „Computation and monitoring of the Soil Moisture Index on the Bulgarian Territory“, Journal of Theoretical and Applied Mechanics, Sofia, 2017, vol. 47, No. 1, pp. 18-26, SJR 0.22
  6. Nitcheva, Olga. The CCM2 river and catcment dataset employed in Bulgarian hydrologic modeling investigations. 2016,;
  7. Milev B., Nitcheva O., Chrischev L., 2015, “Study of the variation and monitoring of the anomalies of soil moisture in Bulgaria”, EUMETSAT Meteorological Satellite Conference, Toulouse, France, ISSN 1011-3932;
  8. Nitcheva O., Marinov D., 2014, “Nitrogen pollution in Bulgaria –Characterization and solutions”, Report of the IES JRC “Towards Macro-Regional Integrated Nutrient Management”, ISSN 1831-9424, pp. 26-29,;
  9. Nitcheva O., Milev B. 2013, “Modelling the drought soil moisture index on the basis of satellite meteorological data”, EUMETSAT meteorological satellite conference, 16-20 Sep, Vienna, ISSN 1011-3932;
  10. Nitcheva O. and Kazandjiev V. (2013), “Estimation of soil hydraulic characteristics in soil moisture modelling”, Journal of Balkan ecology, ISSN 1311-0527, volume 16, N2, pp. 141-150;
  11. Kazandjiev V. and Nitcheva O., “Assessment of the groundwater recharge to groundwater body Bellene by the CLM model”, Magazine “Water Affairs”, N1, 2013,, pp. 141-150, ISSN 1311-0527;
  12. Ioncheva V., Santourjian O. and O. Nitcheva, 2013, “Assessment of the flood waves in the reservoirs in Bulgaria”, Bulgarian Journal of Meteorology and Hydrology, 2013, Volume 16,
  13. Loos R., Wollgast J., Castro-Jiménez J., Mariani G., Huber T., Locoro G., Hanke G., Umlauf G., Bidoglio G., Hohenblum P., Moche W., Weiss S., Schmid H., Leiendecker F., Ternes T., Ortega A. N., Hildebrandt A., Barceló D., Lepom P., Dimitrova I., Nitcheva O., Polesello S., Valsecchi S., Boutrup S., Sortkjaer O., de Boer R., Staeb J.. Laboratory intercomparison study for the analysis of nonylphenol and octylphenol in river water. Trends in Analytical Chemistry, 27, 1, Elsevier Ltd, 2008, DOI:10/1016/j.trac.2007.10.011, 89-95, ISI IF:7.03.

Recent Projects:

  • 2018-2020,  National Science Program "Environmental Protection and Reduction of Risks of Adverse Events and Natural Disasters - Water balance and water resources of Bulgaria”
  • 2016-2018, „Hydrological assessments by mathematical models“, IMech BAS
  • 2015, “Danube Water Nexus”, IES JRC;
  • 2015-2016, “Modelling agricultural pressures on groundwater in Bulgaria and Wallonia”, scientific project WBI-FNRS- Bulgarian Academy of Sciences and Wallonie – Bruxells;
  • 2012-2014, “Drought monitoring and assessment of Soil Moisture Index at country scale”, monthly reports to  the Ministry of Environment and Water in Bulgaria;
  • 2011-2013, “Assessment of the flood waves in the reservoirs in Bulgaria”, Ministry of Environment and Water in Bulgaria.

Membership: The European Water Resources Association (EWRA)

Honors: I was a leader of the project “Assessment of nitrogen pollution on the air, soil and groundwater due to agriculture - case study in Bulgaria”. The outcomes of that research was awarded as one of the most significant results of the Bulgarian Academy of Sciences for 2011.

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Modified date:21-02-2019