Advisory or warnings

Sir,
Come hot summer and many get drowned in rivers and canal in an effort to keep cool with a dip. Har Ki Paudi in particular on Tawi although the river looking silent in flow proves a death trap. Elsewhere its route of flow, it takes away many lives. A few days back likewise Chenab claimed two picnickers who tried to have a dip in the river. Although it is not possible to post police personnel or Fire fighting personnel to prevent such mishaps, yet warnings in Hindi, English and Urdu languages could be fixed on the banks at vulnerable points that without proper safety measures bathing and swimming could prove dangerous. This type of warnings plus patrolling could prevent many fatal drowning. Shall authorities act in the matter?
Yours etc ….
Anil Kalsotra
Akhnoor