Article 1 of the above-mentioned Ordinance establishes that when the costs of correction or obstruction of public waters are not covered by subsidies of the Federation, Canton or municipalities, the land owners have to make contribution as set out in the present Ordinance. The text consists of 31 articles divided into 5 chapters as follows: General provisions (I); Calculation of contributions (II); Proceedings (III); Maintenance of dams (IV); Final provisions (V).