Permanent Retention of Documentation
Hydraulic reports and H&H calculations should be retained in the District/Area Office project file for permanent reference. The need for such records may not arise until years after the project has been completed. Retaining these records will provide many benefits, including:
- Ease of reference for future alteration or rehabilitation of the subject drainage structure
- Justification of design decisions in case of future challenges or litigation
- Valuable reference information for the design of other structures crossing the same stream or in the same watershed
- Proof of intended compliance with regulations such as