Montana Title 7. Local Government § 7-11-1023. Alteration of special districts

(a) occur more than once each year unless the governing body makes a special finding that an alteration is necessary;

(b) delete any portion of the area if the deletion will create an island of included or excluded lands;

(c) delete any portion of the area that is negatively contributing or may reasonably be expected to negatively contribute to environmental impacts that fall within the scope of the special district's program; and

(d) affect indebtedness existing at the time of the change.