Santa Margarita Region Hydrology Model
SMRHM Features
The purpose of SMRHM is to size hydromodification management or flow control facilities to mitigate the effects of increased runoff (peak discharge, duration, and volume) from proposed land use changes that impact natural streams, wetlands, and other water courses. SMRHM provides:
• A uniform methodology for Santa Margarita Region County
• A more accurate methodology than single-event design storms
• An easy-to-use software package 2 SMRHM is based on: • Continuous simulation hydrology (HSPF)
• Actual long-term recorded precipitation data
• Measured pan evaporation data • Existing vegetation (for predevelopment conditions)