Confirm Computational Timestep Compatibility

[danmcgraw94]

Summary

Verify that rfaR correctly handles all computational timesteps supported by RMC-RFA: 15-minute, 1-hour, 6-hour, and 12-hour. Ensure routing, hydrograph scaling, and all dependent calculations produce correct results across all four intervals.

Motivation

RMC-RFA supports multiple hydrograph timesteps, and rfaR must match that behavior for benchmark validation and interoperability. Timestep mismatches or silent assumptions baked into routing arithmetic (e.g., hardcoded seconds-per-step values) could produce incorrect stage-frequency results without any obvious error signal.

Scope

• Audit hydrograph_setup(), scale_hydrograph(), and mod_puls_routing() for any hardcoded timestep assumptions.
• Confirm that the storage-indicator interpolation and Modified Puls arithmetic correctly handle each of the four timestep intervals.
• Verify unit consistency (seconds vs. minutes vs. hours) across all routing calculations at each timestep.
• Run benchmark comparisons against RMC-RFA output at each timestep using JMD or Cherry Creek example data.