The photo shows a traditional home and a closer look reveals that the eave return integrates a gutter and downspout. This is a great example of architectural design that blends beauty and practicality.
On the one hand the traditional look of a classical eave return compliments the architecture. On the other hand, however, rain water runoff is smartly collected and delivered safely away from the foundation. Keeping rainwater from saturating the earth adjacent to the foundation key to ensuring a dry basement or crawlspace. This, by itself, won't solve moisture control problems in homes but it's a good start.
Pro Dry NH is the interior air quality division of Alae Residential Design LLC, a design firm in NH that creates thoughtful, sensible and energy efficient homes. At Alae we design all aspects of the home to perform at a high standard. Moisture control of basement and crawlspace micro climates begins by keeping the water out. Architects get this wrong far too often, but it's simple. As the renowned building scientist (and notoriously funny guy) Joe Listiburek has said to architects "Ladies and gentlemen, please keep the water out!"
The objective sounds simple enough but it requires due diligence with regard to a multitude of architectural details that work together to keep the building dry. The list of properly executed details is long but include proper gutter detailing, flashing and counter flashing of building assemblies, foundation and sub slab drainage and exterior grading.