Power of cities and towns to bind themselves to perform or execute assurances regarding construction of flood walls or other flood control measures

The cities and towns authorized to adopt resolutions and ordinances pursuant to § 62.1-148 shall have the power to irrevocably bind themselves to do any and all things necessary to perform or execute the assurances authorized to be given pursuant to § 62.1-148 regarding construction of flood walls or other flood control measures, anything in the charters of such cities or towns to the contrary notwithstanding.