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 direct a question to one specific staff member, please mention that in your note. The specialty areas of our staff are listed below. 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), Group Manager-Hydraulic Engineer. B.S., Univ. of Kansas, M.S. Iowa State University. (303) 445-2142. [Water management, flow measurement, irrigation, hydraulic structures modeling]

Connie Svoboda, Hydraulic Engineer. B.S. Civil & Environmental Engineering, Lehigh University. M.S. Civil Engineering, University of Minnesota. EIT. (303) 445-2152. [Selective withdrawal, water quality, fishery hydraulics.]

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. [Hydraulic equipment and machinery, cavitation] (retired effective 1/3/13)

Tom Gill, Hydraulic Engineer, B.S. and M.S. Civil Engineering, Colorado State University. (303) 445-2201. [ Water management and delivery system improvement, remote monitoring of canal systems]

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

Bryan Heiner, EIT, Hydraulic Engineer. B.S. and M.S., Civil Engineering, Utah State University, (303) 445-2140 [physical hydraulic modeling, factors affecting accuracy of Parshall flumes].

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

Joseph P. Kubitschek, P.E. (Colorado), Hydraulic Engineer. B.S. and M.S., Mechanical Engineering, University of Colorado at Boulder (303) 445-2148. [Environmental hydraulics, fish passage and protection, hydrodynamic jets, zebra and quagga mussel issues.]

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

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 fish passage, overtopping protection for embankment dams].

Josh Mortensen, EIT, Hydraulic Engineer. B.S. and M.S., Civil Engineering, Utah State University, (303) 445-2156 [physical hydraulic modeling, air entrainment in hydraulic jumps].

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]

Tony L. 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), canal automation, Coanda-effect screens, embankment dam breach research, fuse plug embankments, hydropower & cavitation, SonTek ADV probe & software (WinADV).]


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 exchange single large files within the Reclamation Wide-Area Network (Reclamation users only), visit the intranet file transfer site. To exchange large files between Reclamation and non-Reclamation users, use our FTP site.

Last reviewed: 12/27/12