1. S.R. Abt, and R.J. Wittier , 1988 . Product Number Flood Hazard Concept-Verification Study, Prepared for the Boulder Flood Utility , Boulder, Colorado, 32 pp.
2. City of Boulder, Colorado , 1981 . Boulder Revised Code, Title 9 Chapter 9, Section 2 (A12).
3. City of Boulder , 1987 . Staff Position, Flood Hazard Zone, presented at the Council Study Session, City of Boulder, Colorado, March 9.
4. Federal Emergency Management Agency , 1987 . National Flood Insurance Program and Related Regulations, Revised with Amendment, 44 CFR, Chapter I, Section 59.1, June 30.