Section 717 - Boundaries and map of local government to which territory is annexed1. Within a reasonable time after an annexation pursuant to this article, the governing board of a local government to which territory has been so annexed shall cause (a) a survey to be made of the annexed territory, (b) the boundaries of the same to be marked with monuments, and (c) a map to be made of such local government including the annexed territory. In cooperation with the local government or governments in which such territory was situated prior to such annexation, it shall also cause a partial map to be made of such local government or governments, which map shall be sufficient to show the exclusion of such territory from such local government or governments. Copies of such maps shall be filed in the office of the clerk of the local government, in the office of the clerk of each county in which the affected local governments are situated and in the office of the secretary of state.