Water Resources Research Laboratory Comment Card

The Hydraulic Investigations and Laboratory Services Group
welcomes your comments and questions

Comments submitted through this form are sent to our webmaster, who will forward them to an appropriate staff member. If you wish to contact one of our staff directly, their e-mail addresses and specialties are listed below. Please send requests for information to only one person. We are most able to respond to detailed, specific requests.

Please enter your name:

and e-mail address:

We can only respond if you provide your email address.

Laboratory Phone Numbers

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

Our Staff and Their Specialties

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

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

Brent Mefford, P.E. (Colorado), Technical Specialist-Hydraulic Engineer. B.S. Watershed Science, M.S. Civil Engineering, Colorado State University. (303) 445-2149. bmefford@usbr.gov, [Environmental Hydraulics, Dam Safety]

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

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

K. Warren Frizell. 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. wfrizell@usbr.gov, [Operation and maintenance of hydraulic systems]

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

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

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

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

Billy Baca, Civil Engineering Technician (303) 445-2331. bbaca@usbr.gov

Connie DeMoyer, Hydraulic Engineer. B.S. Civil & Environmental Engineering, Lehigh University. M.S. Civil Engineering, University of Minnesota. EIT. (303) 445-2152. cdemoyer@usbr.gov. [Selective withdrawal, water quality.]

Tom Gill, Hydraulic Engineer, B.S. and M.S. Civil Engineering, Colorado State University. (303) 445-2201. tgill@usbr.gov


Mailing Address Bureau of Reclamation Hydraulic Investigations and Laboratory Services Group Mail Code 86-68460 PO Box 25007 Denver, CO 80225-0007 Phone/Fax Numbers Phone: 303-445-2150 Fax: 303-445-6324	Package Delivery Address Bureau of Reclamation Hydraulic Investigations and Laboratory Services Group Bldg. 67, Rm. 152, 86-68460 Denver Federal Center 6th Avenue and Kipling St. Denver, CO 80225-0007 Map	Sending and Receiving Large Electronic Files We cannot receive files larger than 25 MB via e-mail. To send or receive large files, establish temporary access to our FTP site.

Last reviewed: 03/19/09