Ramon C Naranjo

Ramon Naranjo is Research Hydrologist with the U.S Geological Survey in Carson City, NV. Interests include understanding biogeochemical processes at the sediment-water interface and characterizing flow and transport in hyporheic and groundwater systems using innovative technologies and modeling.


Recent research activities involve characterization of hyporheic flow and nutrients beneath barrier beaches and streams in the shore zone of Lake Tahoe, and using multi-depth observations of temperature in unlined agricultural canal sediments to quantify seepage losses.  Near-shore water quality and lake clarity is of interest due to nutrient enrichment leading to algal blooms and ongoing efforts to quantify groundwater contributions to nutrient loads.  Understanding the role of groundwater surface-water interactions as it relates to nutrient retention and cycling is an important consideration in this research.  He has designed and patented new instrumentation for continuous monitoring of subsurface temperatures to evaluate spatial and temporal variability in seepage rates that allows further development of new heat as tracer model calibration and uncertainty techniques.  He is actively testing new modeling software being developed to enable the coupled heat-flow and reactive transport processes. He serves as a member of the Tahoe Science Advisory Council.  


Invention, Patent, Licence Held

Device for monitoring subsurface temperatures (Patent No. 62/100,365). Exclusively licensed to Alpha Mach, Inc.  1/06/2015.



Ph.D. in Hydrology, University of Nevada, Reno, 2012

M.S. in Hydrology, University of Nevada, Reno, 2000          

B.S. in Environmental Science, New Mexico Highlands University, 1997  



1992- 1997     Hydrologist, Water Quality and Hydrology, Los Alamos National Laboratory

1997- 2000     Research Assistant, University of Nevada Reno/ Desert Research Institute

2002- 2010     Environmental Scientist III, Nevada Division of Environmental Protection

2004- 2012     Research Assistant, Desert Research Institute, Reno Nevada       

2011- Active   Hydrologist, U.S. Geological Survey, Nevada Water Science Center  


Journal Publications and Reports Not Available Online

Naranjo, R.C. 2012 Hyporheic flow, residence times and nitrogen reactions in a riffle-pool sequence, Truckee River, NV. Dissertation, University of Nevada, Reno. Fall 2012.

Sada, D.W., M. Stone, K. Acharya, R.C Naranjo. 2007. Examining Relationships Between Near Bed Velocity and Turbulence and Benthic Community Structure at the McCarran Ranch Restoration Site, Lower Truckee River, Nevada. Desert Research Institute Report.

Naranjo, R.C., J.J. Warwick and R. French, 2000. Runoff from a military deposition site in a semiarid, highland environment; comparison of environmental results with those predicted by the WEPP model (in Proceedings; AWRA's spring specialty conference; Water resources in extreme environments, Kane,) Technical Publication Series - American Water Resources Association, 00-1 303-308

Naranjo, R.C., 2000. Overland Flow Simulations of the Upper Burning Ground, Herlong CA, M.S. Thesis, University of Nevada, Reno.