The Redistricting Board shall establish the size and area of house districts, subject to the limitations of this article. Each house district shall be formed of contiguous and compact territory containing as nearly as practicable a relatively integrated socio-economic area. Each shall contain a population as near as practicable to the quotient obtained by dividing the population of the state by forty. Each senate district shall be composed as near as practicable of two contiguous house districts. Consideration may be given to local government boundaries. Drainage and other geographic features shall be used in describing boundaries wherever possible.