Upon receipt of an application under s. 31.07 procedure shall be had substantially as required by s. 31.06, and if the department finds that such operation and maintenance does not materially obstruct existing navigation or violate other public rights and will not endanger life, health or property, a permit is hereby granted to the applicant, provided the department also finds that the applicant has complied with s. 31.14 (2) or (3).