watercourse Stats is planning measures that may have an appreciable adverse effect upon it, the former Stats may request the latter to apply the provisions of article 12. The request shall be accompanied by a documented explanation setting forth the reasons for such belief. 2. In the event that the State planning the measures nevertheless finds that it is not under an obligation to provide a notification under article 12, it shall so inform the other State, providing a documented explanation setting forth the reasons for such finding. If this finding doss not satisfy the other State, the States concerned shall, at the request of that other State, promptly enter into consultations and negotiations in the mannar indicated in paragraphs 1 and 2 of article 17. 3.During the course of the consultations and negotiations, the State planning the measures shall, if so requested by the other State at the time it requests the initiation of consulations and negotiations, refrain from implementing or permitting the implementation of those measures for a period not exceeding six months. AU/ This article is based on article 13 as proposed by the Special Rapporteur in 1987. la/ This article is based on article 14 as proposed by the Special Rapporteur in 1987. - 143 ..1,In the event that the implementation of planned maaeufas is of the utmost urgency in order to protect public health, public safety or other squally important interests, the Stats planning the measure8 may, subject to articles 6 and 8, immediately proceed to implamentation, notwithetanding the provisions of article 14 and paragraph 3 of article 17. 2.In such cases, a formal declaration of the urgency of the maaeuree shall be communicated to the other watercourse States referred to in article 12 together with the relevant data and information.
**Analysis**
The text appears to be discussing international cooperation and notification procedures regarding planned measures that may have an adverse effect on a watercourse. It highlights the importance of transparency and consultation between states, as well as the possibility of urgent implementation in cases of public health, safety, or other important interests. Given the focus on international cooperation and environmental considerations, it is likely that this text falls under a category related to natural resources and environment.

**Category**
Natural resources and environment