1. P.E., Member, ASCE
2. PhD and Dir., Albrook Hydr. Lab., Civ. and Envir. Engrg. Dept., Washington State Univ., Pullman, WA 99164-2910. E-mail: rhh@wsu.edu
3. Civ. Engr., Nemaha Natural Resour. Dist., 125 Jackson St., Tecumseh, NE 68450. E-mail: cwingert@nrcdec.nrc.state.ne.us
4. PhD and Dean, School of Engrg., Room 102, Pangborn Hall, Catholic Univ., Washington, D.C. 20064. E-mail: kellyw@cua.edu