The Equivalent Lands were several large tracts of land that the Province of Massachusetts Bay made available to settlers from the Connecticut Colony after April 1716. This was done as compensation for an equivalent area of territory that was under Connecticut's jurisdiction but had been inadvertently settled by citizens of Massachusetts.[1][2]: 137 The problem had arisen due to errors and imprecise surveys made earlier in the seventeenth century. The Equivalent Lands were never mapped.[3]