Field Survey
PACE needed to provide a detailed hydraulic study of major streams within the San Juan Creek watershed located in South Orange County. The hydraulic model needed a detailed stream assessment in order to generate the Manning’s n-value or the resistance of water flow over the surface. The model also needed more detail for the bank and stream elevations. PACE sent a crew of engineers with a GPS enabled camera and a GPS to document the channel in greater detail. The photos were compared to well documented samples that have Manning’s n values assigned, and the elevations were used to generate profiles within the hydraulic model. The project provided PACE with a greater understanding of the channel characteristics and was able to successfully produce a detailed model of the necessary channels.
Software/Hardware:
- RICOH GPS Camera
- Trimble GPS
- Mobile Mapper
- ArcGIS
- PhotoLink
- Google Earth