The letters following each Review Question refer to the corresponding Learning Objective from the Chapter Opener. A hotel chain would like to build a new beachfront hotel along a north-south- trending stretch of beach where a strong longshore current flows from south to north. The neighbor to the south has constructed an east-west-trending groin on the property line. Will this groin pose a problem? If so, what solutions could the hotel try? (G)

First, understand that the beach has a north-south-trending stretch, and there is a strong longshore current flowing from south to north. A neighboring property to the south has constructed an east-west-trending groin on the property line.

The primary problem with the groin is that it may interrupt the natural longshore current and cause sand accumulation on one side (south side, in this case) and erosion on the other side (north side, where the hotel chain is planning to build). This erosion could pose a threat to the stability and longevity of the beachfront hotel.

There are several possible solutions that the hotel chain could consider. 1. Negotiate with the neighbor: They could try to negotiate with the neighbor who built the groin and discuss the concerns. Potentially, the neighbor could remove or modify the groin, which could help with sand erosion and accumulation issues. 2. Build another groin: The hotel chain could construct their own groin to help counteract the effects of the existing groin. This would involve building an additional east-west-trending groin on their property line to help in mitigating the erosion caused due to the earlier groin. 3. Implement beach nourishment: The hotel chain can invest in beach nourishment techniques, which involve bringing in additional sand from another location to compensate for the erosion caused by the longshore current interruption. The hotel can then continually monitor the beach and replenish the sand as needed. 4. Use alternative coastal structure: Instead of a groin, the hotel chain could consider using other coastal structures, such as seawalls or breakwaters, which could serve to protect the beachfront while minimizing the impact on the natural sand movement. 5. Relocate the hotel: As a last resort, the hotel chain might consider relocating the hotel to another suitable location along the coast where there is no such impact of a groin or other coastal structures, ensuring the beachfront remains stable and secure.