Dinas Powys village is spread across the full width of a traditional wooded valley, with the Cadoxton River running in the river valley.

The surrounding soils within the village bounds are mostly a strong, brown, dry earth, well adapted for arable farming and the growing of grains of all kinds that contributed to the area being a mostly farming community until the modern era.
The substratum under the whole area is a limestone that was likely laid down under a warm ocean at some stage in the distant past.

The village has not been able to spread northwards, because there were (and still are) golf courses and protected woodlands between the village and Michaelston-le-pit.
The freeholders of Cwrt-yr-Ala Estate prevented the two from merging.
More recent housing development has taken place in a linear fashion either side of the main Cardiff road and in the direction of Cadoxton and Barry.
Cwm George and Cwrt-yr-Ala are woodlands in the area.

It is obvious by comparing variously aged maps that over the last hundred years Penarth and Dinas Powys have spread and grown closer together.
In many places the two communities are only separated by a few hundred yards and a couple of fields, although no direct road connections have been added entailing a roundabout car route of several miles via Llandough.
The only existing direct road is the medieval and winding single track 'Cross Common Road'.
Another traditional lane crossing that existed between the current site of Tesco Express and the current Erw Delyn school at Redlands Heights, Penarth was closed to through traffic following extensions to the Murch estate in the 1970s.

According to the Environment Agency, in the October floods of 1998 only six properties at Dinas Powys were affected.
Flooding was caused by the floodwater overtopping the banks of the Cadoxton River among others and ordinary watercourses, restrictions to flow in channels and surcharging of drains.
Dinas Powys village is spread across the full width of a traditional wooded valley, with the Cadoxton River running in the river valley.
The surrounding soils within the village bounds are mostly a strong, brown, dry earth, well adapted for arable farming and the growing of grains of all kinds that contributed to the area being a mostly farming community until the modern era. The substratum under the whole area is a limestone that was likely laid down under a warm ocean at some stage in the distant past. 
The village has not been able to spread northwards, because there were (and still are) golf courses and protected woodlands between the village and Michaelston-le-pit. The freeholders of Cwrt-yr-Ala Estate prevented the two from merging. More recent housing development has taken place in a linear fashion either side of the main Cardiff road and in the direction of Cadoxton and Barry. Cwm George and Cwrt-yr-Ala are woodlands in the area.
It is obvious by comparing variously aged maps that over the last hundred years Penarth and Dinas Powys have spread and grown closer together. In many places the two communities are only separated by a few hundred yards and a couple of fields, although no direct road connections have been added entailing a roundabout car route of several miles via Llandough. The only existing direct road is the medieval and winding single track 'Cross Common Road'. Another traditional lane crossing that existed between the current site of Tesco Express and the current Erw Delyn school at Redlands Heights, Penarth was closed to through traffic following extensions to the Murch estate in the 1970s.
According to the Environment Agency, in the October floods of 1998 only six properties at Dinas Powys were affected. Flooding was caused by the floodwater overtopping the banks of the Cadoxton River among others and ordinary watercourses, restrictions to flow in channels and surcharging of drains.
Dinas Powys