Ying Ouyang, Research Hydrologist

Ying Ouyang

Research Hydrologist
775 Stone Blvd., Thompson Hall, Room 309
Mississippi State, MS 39762
Email: ying.ouyang@usda.gov
Phone: 662-325-8654
Fax: 662-325-3278

Current Research

Predicting stream discharge, groundwater flow, and sediment/nutrient transport in the Lower Mississippi River Alluvial Valley (LMRAV) as affected by agricultural/forest managements and climate change using watershed models such as HSPF and MODFLOW.  Performing real-time monitoring of tree sap flux, soil water movement, stream discharge, groundwater flow, and water quantity in the soil-tree-stream-groundwater continuum.  Analyzing the long-term meteorological,  hydrological, and water quality data using HYDSTRA model and multi-variant statistical methods such as copula, flow/load duration curve, Mann-Kendall test, principal component analysis, and wavelet analysis.  Developing and applying STELLA-based models to predict woody biomass production and CO2 emission from bioenergy plantations as affected by soil nutrient and water availability as well as by hydrological and climatic conditions.  Developing and applying a STELLA-based model to simultaneously evaluate farm pond water availability and crop irrigation demand in the LMRAV.


  • Oregon State University, Soil Science (Soil Physics), 1991
  • Oregon State University, Soil Science (Soil Physics), 1987
  • South China Agricultural University, Soil Chenistry , 1982

Professional Organizations

  • American Institute of Hydrology, Professional Hydrologist (2002 - Current
  • American Geophysical Union, Member (1991 - Current
  • Soil Science Society of America, Member (1989 - Current

Awards & Recognition

  • Certificate of appreciation for work as Associate Editor , 2010
    Certificate of appreciation from the American Society of Agronomy/Crop Science Society of America/Soil Science Society of America for work as Associate Editor of the Journal of Environmental Quality for six years (two terms) in 2010..
  • Ten years service award , 2009
    Ten years service award by the St. Johns River Water Management District, Florida, 2009..

Research Highlights


Estimating impacts of extreme rainfall events for local watersheds

Many future climate scenarios project impacts of climate variability on water quantity and quality. However, these scenarios may not be accurate and do not have flexibility for local and small watershed analyses. They are not able to answer questions such as: what will happen to stream flow, water quality, and water availability for a given local watershed if extreme rainfall events such as very dry summers and wet winters occur in the next ten years? This information is crucial to state and local water resource managers and stakeholders for implementing adaptive management practices on crop and forest lands.   


Estimating the ratio of pond size to irrigated crop land: A tool to conserve groundwater resources in Mississippi

Groundwater withdrawals in the Mississippi Delta region and around the nation have increased dramatically since the last century, resulting in the depletion of water resources from subsurface aquifers. Although more on-farm water storage ponds have been constructed in recent years to mitigate groundwater depletion in Mississippi, little effort has been devoted to addressing the question of how many hectares (1 hectare = 2.47 acres) of crop land can be irrigated with water from one hectare of agricultural pond. Forest Service scientists developed a computer modeling tool to address this need.


Last updated on :26-AUG-2020 09:44:14