Upon determining that a sufficient petition has been filed, the judge making such determination shall cause written notice thereof to be given to the director of the department of natural resources, the director of environmental protection, and to the board of directors of any conservancy district having jurisdiction over all or part of the territory affected by the proceeding or within the same major watershed area as defined by the department of natural resources and the director of environmental protection. The director of natural resources, the director of environmental protection, and the directors of such conservancy districts may appear at any hearing considering the establishment, dissolution or merger of any conservancy district or subdistrict thereof, and be heard concerning the need for a conservancy district, the area that should be included, desirable improvements, and any other matters which in their opinion should be brought to the attention of the court.