Saluda County, South Carolina (SC) County population in 2014: 20,026 (19% urban, 81% rural); it was 19,181 in 2000. County owner-occupied with a mortgage or a loan houses and condos in 2010: 2,961. County owner-occupied free and clear houses and condos in 2010: 2,684. County owner-occupied houses and condos in 2000: 5,745.
Helicoidal flow. Helicoidal flow is the cork-screw-like flow of water in a meander. It is one example of a secondary flow. Helicoidal flow is a contributing factor to the formation of slip-off slopes and river cliffs in a meandering section of the river.
This is a derived parameter which quantifies the tendency for airflow in the lower levels of the troposphere to 'corkscrew' and thus encourage the formation of storms with strong mesoscale circulations, possibly leading to tornadic activity. Helicity is related to: (a): speed shear from surface to 3 km (about 700 hPa) - how much the wind speed changes over this altitude band. (b): directional change of the wind over the same altitude band. (c): the strength of the low-level wind contributing to the speed / directional shear (as above). The numerically-greater each of these elements is, the higher is the helicity available for ingestion into a developing storm complex.