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  Sangdo An is graduate student in Civil Engineering at Colorado State University. He is currently studying PhD in hydraulics. He graduated fromCurrently Research Assistant Professor at Myoungji University South Korea jiuncivil@gmail.com Chungbuk National University, South Korea in 2001 with a MS degree in Hydro-system Engineering. Since 2002, He has been working for Korea Water Resources Corporation (K water), which is establishing an integrated water management system focused on water utilization and flood control. At K water, he usually did detailed design and 3D numerical analysis for multi-purpose dam. He is now interested in turbidity flow analysis using various numerical models. Recently, high turbidity flow became a big issue in Korea because the turbidity effects into several parts badly such as fishery and sightseeing, and water treatment. The Imha reservoir is the worst reservoir which has a high turbidity problem in Korea. Sangdo is going to establish the Turbidity Flow Simulation System using various numerical models for Imha reservoir for his dissertation. |
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Ted is using HEC-RAS, a 1-dimensional hydraulic model, to determine the water surface elevation profiles for the Bosque reach of the Middle Rio Grande. His analysis includes simulations for 25 flow discharges varying in increments of 200 cfs up to 5,000 cfs. This analysis is to provide a better understanding of the historical overbanking throughout this reach. To achieve this, Ted is repeating his analysis with four different bed geometry conditions based on HEC-RAS model geometries for 1962, 1972, 1992, and 2002. These HEC-RAS models, in conjunction with aerial photographs analyzed using a GIS, will aid in his analysis. A total of 100 different hydraulic simulations will be completed to be analyzed in his reach report. |
Estimates
of extreme floods and
probabilities are needed for hydrologic engineering and dam safety risk
analysis. Physically-based, distributed watershed models are
used
as an avenue to estimate extreme floods, and as a basis to extrapolate
frequency curves. This research focuses on applied
hydrology
and
hydraulics of extreme floods on large
watersheds. The main
elements of this 
research
include improving and
using a
two-dimensional, physically-based rainfall-runoff model (CASC2D) to
estimate extr
eme
floods and probabilities for
dam safety on a large (12,000 km2) watershed, the Arkansas River above
Pueblo, Colorado. New tools have been
developed, including a
channel mesh generator, so the model can be applied at this
scale. The main research goals are to: demonstrate that
CASC2D
can be used to simulate extreme floods on large watersheds; and add new
process components, including extreme storms and initial conditions, so
that CASC2D can be used to develop a flood frequency curve.
In
addition, we are conducting sensitivity studies to examine: the spatial
distribution of storm rainfall with area and elevation; storm duration;
initial soil saturation; and channel floodplains; and their effects on
the model flood frequency curve extrapolation, hydrograph shape,
timing, peak and volume.
Noah Friesen is a
Masters student in the hydraulics and river mechanics program at CSU.
After getting a BS in Civil Engineering in 2005 from CSU, he returned
for graduate school in the spring of 2006. He spent the summer of 2006
in Las Vegas, Nevada working at the Desert Research Institute, which is
the research branch of the University of Nevada system.
Weather Service River Forecast
System's Sacramento Soil Moisture Accounting (SAC-SMA) program to
create a conceptual soil moisture routine for the TREX model. By
accounting for the soil moisture recovery and return flows, the new
model will bridge the gap between major runoff events and allow for
mid- to long-term hydrophysical modeling.
intrusion in the estuary and prevent a large flood due to high tides.
The channel of Nakdong River was designed to convey a design flood of
18,300
cubic meters per second. The estuary barrage impacts the Lower Nakdong
River
in the following fields: hydraulics, hydrology, sedimentation,
water-quality and stream ecology. Especially, because of the
construction of the barrage, the Lower Nakdong River has experienced
sedimentation problems requiring
dredging operation annually. The primary purpose of the dredging
operations
is to maintain the conveyance capacity of the channel in the event of a
large
flood combined with high water levels during high tides. The recent
historical
record shows dredging volumes of about 400,000 cubic meters of dredged
material
per year. The material dredged is primarily non-cohesive very fine sand.
CASC2D framework
has
been developed since 1991 by Dr. Julien and his
students. CASC2D is the
numerical integrated surface hydrology and sedimentation program.
Additionally, it
can provide the runoff and sediment transport movies with time series. 
The
purpose of this project was to update this database with the most
recent possible data, using sources such as the U.S. Bureau of
Reclamation office, U. S. Geological Survey, and the USBR reports. The
data, analyses for each reach studied in the Middle Rio Grande, and the
reports themselves were organized into an interactive database DVD that
can
be accessed like a webpage. Through this, it is possible to view
analyses from each reach of the Rio Grande, each report, and the theses
and dissertations written by the students who have worked on this
project for the past several years.
Hydraulic
Modeling Analysis![C:\Documents and Settings\b0etepso\Local Settings\Temporary Internet Files\Content.Word\MSH_09_20_2007_207[1].jpg](O%27brien.jpg)
Tracy is a Masters student at Colorado State University,
majoring in Hydraulic Engineering.
Kiyoung Park is a graduate student of hydraulics
in Civil Engineering at Colorado State University. He is currently studying
Seema Shah-Fairbank completed her graduate
studies in Civil Engineering at Colorado State University.
Young-ho
Shin will take
the analysis effects on
downstream
river channel
using aerial photographs which taken before and after dam construction.
The study focuses on the aspect of water, sediment and vegetation
interaction in the sand bed channel where the river flow is regulated
by upstream dams, in order words, hydro-geomorphologic changes in a
sand bed channel and thus vegetation expansion on the sandbars in the
channel by changes in the flow regime. The study area is the Nakdong
River in Korea. This river
is the longest river in South
Korea with its river length of 506km. The basin area of the river is
23,394km2, the second largest after the Han River (32,200km2). It
locates in the south east of the Korean Peninsula and generally the
river flows from north to south. The
riverbed is composed mostly of
sands except in the far upstream in the mountain area where it is composed
of gravel
and cobble. In the river basin, dams have been built since
1970’s
starting from the Andong
Dam in 1976. Since then,
more major
dams including the Imha Dam
(completed in 1991) and Hapcheon Dam (completed in 1988) have been
built for flood control, water supply and hydroelectric power
generation. Also, estuary barrage which is located at the end of
Nakdong River have been built to reduce salt-water intrusion and
prevent a large flood due to high tides. 
Andy Steininger is a master’s degree candidate studying hydraulics
and hydrology in the Civil and Environmental Engineering Department at Colorado
State University.
To
meet this need,
a numerical model to simulate the transport and fate of chemicals
across watersheds is under development. The model development effort
focuses on surface water hydrology with an emphasis on the transport
and fate of particle-associated chemicals. A computer code that
integrates the most critical hydrologic, sediment transport, and
chemical transport and fate processes into a single framework was
developed (Figure 1). This new code is called the Two-dimensional
Runoff, Erosion, and eXport (TREX) model and is based on Colorado State
University’s CASC2D watershed model with chemical transport
and
fate processes from the USEPA WASP and IPX series of stream water
quality models.
I am a
part-time
graduate student in hydraulic engineering at Colorado State University.
Both Oregon State University and CSU felt obliged to offer me a
bachelors and masters degree in civil engineering, respectively. In
between school and work I managed to become a licensed professional
engineer in Oregon and a registered professional hydrologist through
the American Institute of Hydrology. In order to insure that my
graduate studies progress at a glacial pace, I currently work as the
forest hydrologist on the White River National Forest in Glenwood
Springs.
