David T. Williams and Associates (DTW) is a certified MBE, SBE, DBE and Service Disabled Veteran owned small business. Dr. David Williams, the president of DTW, has over 40 years of experience in the water resources industry and is known nationally and internationally for his contributions to the industry. He is well versed in the computer programs HEC-1, HEC-HMS, HEC-2, HEC-RAS, HEC-6, STORM, and WQRRS. Dr. Williams is also a nationally recognized expert in sedimentation engineering and in developing innovative solutions to difficult hydraulic and hydrologic design problems in rivers and estuaries.
Dr. Williams previously served as a two time President of the IECA, past chairs of the ASCE Task Committee on Analysis of Laboratory and Field Sediment Data Accuracy and Availability, past chair of the ASCE Committees - Sedimentation Committee, Computational Hydraulics, Stream Restoration and Probabilistic Approaches. He served as a committee member of ASTM A05.12 (Wire specifications), standards for both welded and twisted (woven) gabions and on ASTM D18.25 (Erosion Control Products). While chair of the Federal Interagency Technical Committee on Sedimentation, he worked with hydraulic and sedimentation experts from the Federal Highway Administration, Bureau of Reclamation, U.S. Geological Survey, Bureau of Land Management, Forest Service, TVA, Bureau of Land Management and the Agricultural Research Service. He is the author of more than 100 technical papers and reports on hydraulics and sedimentation. Dr. Williams was formerly an Associate Editor of the ASCE Journal of Hydraulic Engineering, as well as a reviewer and currently on the executive Board of the American Institute of Hydrology.
Dr. Williams has been a short course instructor for ASCE, Federal and State Agencies for computer training workshops on: HEC-2, HEC-RAS, HEC-HMS and HEC-6 and has taught short courses on streambank protection design, sediment transport, bridge scour, and fluvial geomorphology.