The National Mountain Safety Monitoring System (Snosm) was established in 1996 by the Information and Safety Commission (CIS) of the Higher Council for Mountain Sports (CSSM), coordinated by the Ministry of the Interior (Directorate of Defense and Civil Security) and the Ministry of Youth and Sports (Directorate of Sports). During the winter season, the SNOSM’s objective is to track rescue operations in ski areas to provide a better understanding of mountain accidents and thereby enable the development of a prevention policy. The system relies on recording rescue service interventions on the slopes each year from December to April in the 26 French departments with at least one winter sports resort. The information is centralized by department at the prefectural level and transmitted to the SNOSM. An assessment of this system was conducted in 2007 to evaluate the extent to which the existing system met its established objectives. The aim was to assess the system’s relevance, procedures, and results based on an analysis of existing documents, an evaluation of the database, interviews with the system’s partners, and a mail survey of stakeholders in winter sports resorts and prefectures. As a system for monitoring emergency service interventions, the system strictly adheres to the principles established by the CIS and provides results with a high level of comprehensiveness. It has provided insights into winter sports accidents where little data previously existed. However, it has certain limitations, particularly regarding the population covered, the nature of the data collected (in aggregated form, with very few details on the characteristics of the injured, the circumstances of the accidents, and the treatment provided), and the analysis and presentation of the report. The system therefore does not meet all objectives and has hardly evolved since its implementation. To improve the system, areas for consideration have been proposed in light of redefined objectives, particularly regarding the information flow, the presentation of results and the report’s structure, the evolution of the network of stations—with a smaller number of stations but collecting more detailed data on accidents—the integration of other data sources, notably those from the Association of Mountain Doctors or hospital data, and improved communication regarding the results. (R.A.)