Grand-Terrace, California

8 Land Tracts in Riverside County , Santa Ana Watershed

Grand-Terrace, California, located in San Bernardino County, faces a very high risk of natural disasters and climate-related hazards. The area is characterized by relatively high risk factors such as flash flooding, landslides, and wildfires due to its mountainous terrain and semi-arid climate. The region is prone to extreme temperatures, with high average precipitation levels that can lead to flooding events, impacting the local population of over 217,000.

The city of Grand-Terrace is situated within the Southern California Coastal hydrologic subregion, which includes the Santa Ana hydrologic unit. This region is susceptible to drought conditions, leading to increased wildfire risk. Additionally, being near fault lines, such as the San Andreas Fault, presents a potential risk of seismic activity and earthquakes. The nearby water bodies, including the Santa Ana River, can pose flood risks during heavy rainfall events. These geographical features, combined with the climate factors, contribute to the overall high hazard risk in the area.

Despite its very high risk rating, Grand-Terrace benefits from a relatively low hurricane risk due to its inland location. However, the community still faces challenges in terms of climate resilience and emergency preparedness. Historical events like the 2003 Grand Prix Fire that burned over 80,000 acres in the surrounding areas highlight the significant impact of wildfires in the region. With a comprehensive understanding of the geological features and climate factors at play, it is crucial for residents and authorities to prioritize proactive measures to mitigate the potential risks and enhance disaster resilience in Grand-Terrace, California.