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Laboratory Staff

General Phone Number: (303) 445-2150
Fax: (303) 445-6324

Staff Web pages

Connie DeMoyer Svoboda
Robert Einhellig
Kathy Frizell
K. Warren Frizell

Tom Gill
Leslie Hanna
Jim Higgs
Joseph Kubitschek

Brent Mefford
Tracy Vermeyen
Tony Wahl


WRRL Staff Photo

USBR staff photo

 


Back Row, left to right

Benjamin Travers, Engineering Aide, now on the staff of the Hydropower Technical Services Group

Tom Gill, P.E. (Colorado), Hydraulic Engineer, B.S. and M.S. Civil Engineering, Colorado State University. (303) 445-2201. [Water management, flow measurement, irrigation, remote monitoring, canal system modernization]

Bob Einhellig, P.E. (Iowa), Hydraulic Engineer. B.S., Univ. of Kansas, M.S. Iowa State University. (303) 445-2142. [Water management, flow measurement, irrigation, hydraulic structures modeling]

Dr. Rodney Wittler, P.E. (Colorado), Hydraulic Engineer. B.S., M.S., Ph.D., Civil Engineering, Colorado State University, [River and fishery restoration; riprap design, dam safety, erosion protection/prevention, river mechanics/fluvial geomorphology.] Dr. Wittler has transferred to Reclamation's Weaverville, California office.

Thomas Harris, Student, Colorado School of Mines. (no longer on our staff)

Brent Mefford, P.E. (Colorado), Technical Specialist-Hydraulic Engineer. B.S. Watershed Science, M.S. Civil Engineering, Colorado State University. (303) 445-2149. [Fish screening and passage, environmental hydraulics, dam safety]

Rudy Campbell, Civil Engineering Technician, RETIRED.

Tony Wahl, P.E. (Colorado) Hydraulic Engineer. B.S. and M.S. Civil Engineering, Colorado State University, (303) 445-2155. [water measurement & long-throated flume design software (WinFlume), fish screen modeling, dam breach research, fuse plug embankments, erodibility of cohesive soils, hydropower & cavitation, canal automation, SonTek ADV probe & software (WinADV).]

Tracy Vermeyen, P.E. (Colorado), Hydraulic Engineer, B.S. and M.S. Civil Engineering, Colorado State University. (303) 445-2154. [selective withdrawal, acoustic velocity meters, thermally stratified flows, labyrinth weirs, open channel water measurement]

Jerry Fitzwater. Civil Engineering Technician, RETIRED.

James Higgs, P.E. (Colorado), Hydraulic Engineer. B.S. and M.S., Civil Engineering, Utah State University, (303) 445-2147, [Computational Fluid Dynamics, Rubber gates, Numerical modeling.]

Dr. Joseph P. Kubitschek, P.E. (Colorado), Hydraulic Engineer. B.S., M.S., Ph.D., Mechanical Engineering, University of Colorado at Boulder (303) 445-2148. [Environmental hydraulics, fish passage and protection, hydrodynamic stability.]

Front Row, left to right

Cliff Pugh, Group Manager, RETIRED

Kathy Frizell. Hydraulic Engineer. B.S. Water Resources, UCLA. (303) 445-2144. [Stepped spillway design, overtopping protection design, dam safety, total dissolved gas investigation, fish barrier design, water measurement]

Leslie Hanna, EIT, Hydraulic Engineer. B.S. Mechanical Engineering, Arizona State University. (303) 445-2146, [Environmentally acceptable lubricants for wicket gates, stilling basin erosion problems]

Connie DeMoyer Svoboda, P.E. (Colorado), Hydraulic Engineer.  B.S. Civil & Environmental Engineering, Lehigh University.  M.S. Civil Engineering, University of Minnesota. EIT. (303) 445-2152. [Selective withdrawal, water quality, fish screening and field evaluations.]

Billy Baca, Civil Engineering Technician (303) 445-2331.

Right side

K. Warren Frizell, EIT, Research Hydraulic Engineer. B.S. Mechanical Engineering, University of New Mexico. M.S. Civil Engineering, University of Minnesota. EIT, State of Colorado. (303) 445-2145. [Operation and maintenance of hydraulic systems, turbine hydraulics, cavitation]

Not Shown

Dale Lentz, P.E. (Washington), Hydraulic Engineer. B.S. and M.S., Utah State University, (303)-445-2143. [Fish passage and protection, hydraulic modeling.]

Leah Lottes, Group Secretary, (303) 445-2150.


Last reviewed: 10/14/09