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We have been forced to disable our electronic comment card page due to excessive quantities of frivolous and spam e-mail. If you have a question or comment, please call one of our staff. Their specialties and phone numbers are listed below. Please contact Tony Wahl for comments directly related to the web site.

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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. [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).] Web site manager.

 

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: 01/07/14