Bio


A hydrologist and water resources specialist, Freyberg studies reservoir sedimentation and hydrology, hydrologic ecosystem services, summer drying of Pacific coast intermittent streams, tropical rainfall and throughfall, surface water-ground water interactions, especially in reservoir/sediment systems, and scaling and spatial distribution of recycled water systems.

Academic Appointments


Honors & Awards


  • Presidential Young Investigator, National Science Foundation (1985-1990)
  • Award for Excellence in Undergraduate Teaching, Tau Beta Pi (1993, 2009)
  • Bing Teaching Fellow, Stanford University (1994)
  • University Fellow in Undergraduate Education, Landreth Family (2002-2007)
  • Eugene Grant Award for Excellence in Teaching, Eugene L. Grant (2009)

Boards, Advisory Committees, Professional Organizations


  • Member, Board of Directors, Consortium of Universities for the Advancement of Hydrologic Science, Inc. (CUAHSI) (2008 - Present)
  • Member, Advisory Board, Penn State University Sustainability Institute (2012 - Present)
  • Member, Environmental Fluid Mechanics and Hydrology Program (1981 - Present)

Professional Education


  • PhD, Stanford University (1981)

2013-14 Courses


Postdoctoral Advisees


Journal Articles


  • Assessing the scale of resource recovery for centralized and satellite wastewater treatment. Environmental science & technology Lee, E. J., Criddle, C. S., Bobel, P., Freyberg, D. L. 2013; 47 (19): 10762-10770

    Abstract

    Wastewater treatment to recover water, energy, and other resources is largely carried out at centralized treatment facilities. An alternative is local treatment at satellite facilities where wastewater is removed from a collection system, resources are recovered locally, and the residuals are returned to the collection system. Satellite systems decrease the pipe and energy required for delivery of treated water and may decrease cost. But decisions regarding the geographic scale of resource recovery require consideration of many criteria. In this study, we rank water and energy recovery options for a simplified test case at three scale configurations: a centralized configuration and two hybrid configurations. We first choose criteria for decision-making. Quantitative performance metrics are defined for each criterion, weighted, and computed for each configuration. We then rank configurations. Rankings depend upon the decision-making strategy. For our test case, though, several strategies yield the same top-ranked configuration: a hybrid where communities close to the centralized facility use centralized resource recovery; communities far from the centralized facility use satellite resource recovery. Our ranking is sensitive to initial investment cost for satellite treatment. The results underscore the importance of cost-effective treatment systems and of an accurate and comprehensive analysis of design components.

    View details for DOI 10.1021/es401011k

    View details for PubMedID 23930682

  • Land cover effects on groundwater recharge in the tropics: ecohydrologic mechanisms ECOHYDROLOGY Brauman, K. A., Freyberg, D. L., Daily, G. C. 2012; 5 (4): 435-444

    View details for DOI 10.1002/eco.236

    View details for Web of Science ID 000307882700007

  • Potential evapotranspiration from forest and pasture in the tropics: A case study in Kona, Hawai ' i JOURNAL OF HYDROLOGY Brauman, K. A., Freyberg, D. L., Daily, G. C. 2012; 440: 52-61
  • A comparison of past small dam removals in highly sediment-impacted systems in the U.S. GEOMORPHOLOGY Sawaske, S. R., Freyberg, D. L. 2012; 151: 50-58
  • Forest structure influences on rainfall partitioning and cloud interception: A comparison of native forest sites in Kona, Hawai'i AGRICULTURAL AND FOREST METEOROLOGY Brauman, K. A., Freyberg, D. L., Daily, G. C. 2010; 150 (2): 265-275
  • The Effect of Social Presence on Affective and Cognitive Learning in an International Engineering Course Taught via Distance Learning JOURNAL OF ENGINEERING EDUCATION Mackey, K. R., Freyberg, D. L. 2010; 99 (1): 23-34
  • Implementing Hydrologic Boundary Conditions in a Multiphysics Model JOURNAL OF HYDROLOGIC ENGINEERING Chui, T. F., Freyberg, D. L. 2009; 14 (12): 1374-1377
  • Simulating a lake as a high-conductivity variably saturated porous medium GROUND WATER Chui, T. F., Freyberg, D. L. 2008; 46 (5): 688-694

    Abstract

    One approach for simulating ground water-lake interactions is to incorporate the lake into the ground water solution domain as a high-conductivity region. Previous studies have developed this approach using fully saturated models. This study extends this approach to variably saturated models, so that ground water-lake interactions may be more easily simulated with commonly used or public domain variably saturated codes that do not explicitly support coupled lake-water balance modeling. General guidelines are developed for the choices of saturated hydraulic conductivity and moisture retention and relative permeability curves for the lake region. When applied to an example ground water-lake system, model results are very similar to those from a model in which the lake is represented as a specified head boundary continuously updated by a lake mass balance. The high-conductivity region approach is most suitable for relatively simple geometries and lakes with slower and smaller fluctuations when the overall flow pattern and system fluxes, rather than the detailed flow pattern around the intersection of the lake and land surfaces, are of interest.

    View details for DOI 10.1111/j.1745-6584.2008.00463.x

    View details for Web of Science ID 000259193300006

    View details for PubMedID 18624695

  • Hydrostratigraphy and geochemistry at a coastal sandfill in Singapore HYDROGEOLOGY JOURNAL Chua, L. H., Lo, E. Y., Freyberg, D. L., Shuy, E. B., Lim, T. T., Tan, S. K., Ngonidzashe, M. 2007; 15 (8): 1591-1604
  • On using the equivalent conductivity to characterize solute spreading in environments with low-permeability lenses WATER RESOURCES RESEARCH Guswa, A. J., Freyberg, D. L. 2002; 38 (8)
  • Slow advection and diffusion through low permeability inclusions JOURNAL OF CONTAMINANT HYDROLOGY Guswa, A. J., Freyberg, D. L. 2000; 46 (3-4): 205-232
  • Solute transport at the borden field experiment: Grain- and field-scale rate limitations GROUNDWATER: AN ENDANGERED RESOURCE Cunningham, J., FREYBERG, D., Roberts, P. 1997: 65-70
  • UPSCALED SOIL-WATER RETENTION USING VAN GENUCHTEN'S FUNCTION JOURNAL OF HYDROLOGIC ENGINEERING Green, T. R., Constantz, J. E., Freyberg, D. L. 1996; 1 (3): 123-130
  • Use of sedimentological information for geometric simulation of natural porous media structure WATER RESOURCES RESEARCH Scheibe, T. D., Freyberg, D. L. 1995; 31 (12): 3259-3270
  • STATE-DEPENDENT ANISOTROPY - COMPARISONS OF QUASI-ANALYTICAL SOLUTIONS WITH STOCHASTIC RESULTS FOR STEADY GRAVITY DRAINAGE WATER RESOURCES RESEARCH Green, T. R., Freyberg, D. L. 1995; 31 (9): 2201-2211
  • EFFICIENT SIMULATION OF SINGLE-SPECIES AND MULTISPECIES TRANSPORT IN GROUNDWATER WITH LOCAL ADAPTIVE-GRID REFINEMENT WATER RESOURCES RESEARCH Wolfsberg, A. V., Freyberg, D. L. 1994; 30 (11): 2979-2991
  • SIMULATION OF ONE-DIMENSIONAL CORRELATED FIELDS USING A MATRIX-FACTORIZATION MOVING AVERAGE APPROACH MATHEMATICAL GEOLOGY Black, T. C., Freyberg, D. L. 1990; 22 (1): 39-62
  • AN EXERCISE IN GROUNDWATER MODEL CALIBRATION AND PREDICTION GROUND WATER Freyberg, D. L. 1988; 26 (3): 350-360
  • STOCHASTIC MODELING OF VERTICALLY AVERAGED CONCENTRATION UNCERTAINTY IN A PERFECTLY STRATIFIED AQUIFER WATER RESOURCES RESEARCH Black, T. C., Freyberg, D. L. 1987; 23 (6): 997-1004
  • A NATURAL GRADIENT EXPERIMENT ON SOLUTE TRANSPORT IN A SAND AQUIFER .1. APPROACH AND OVERVIEW OF PLUME MOVEMENT WATER RESOURCES RESEARCH Mackay, D. M., Freyberg, D. L., Roberts, P. V. 1986; 22 (13): 2017-2029
  • A NATURAL GRADIENT EXPERIMENT ON SOLUTE TRANSPORT IN A SAND AQUIFER .2. SPATIAL MOMENTS AND THE ADVECTION AND DISPERSION OF NONREACTIVE TRACERS WATER RESOURCES RESEARCH Freyberg, D. L. 1986; 22 (13): 2031-2046
  • MODELING THE EFFECTS OF A TIME-DEPENDENT WETTED-PERIMETER ON INFILTRATION FROM EPHEMERAL CHANNELS WATER RESOURCES RESEARCH Freyberg, D. L. 1983; 19 (2): 559-566
  • APPLICATION OF THE GREEN-AMPT MODEL TO INFILTRATION UNDER TIME-DEPENDENT SURFACE-WATER DEPTHS WATER RESOURCES RESEARCH Freyberg, D. L., Reeder, J. W., FRANZINI, J. B., Remson, I. 1980; 16 (3): 517-528
  • INFILTRATION UNDER RAPIDLY VARYING SURFACE-WATER DEPTHS WATER RESOURCES RESEARCH Reeder, J. W., Freyberg, D. L., FRANZINI, J. B., Remson, I. 1980; 16 (1): 97-104