Rivière Blanche has its source around the Pic la Selle, which rises to 2,680 meters above sea level, overlooking the mountains of peak.

[1] In the past, the Rivière Blanche flowed into lakes whose arms are channeled either to the northeast of the Étang Saumâtre, or to the northwest of the Trou Caïman.

The former name for this was called the Rivière du Boucan Brou, however today, these arms are channeled under the name Boucanbrou or the Canal Boucambrou.

During the rainy season, the Rivière Blanche becomes impetuous and overflows its banks, especially because the Canal Boucanbrou is not curetted and clear of the mud that reduces the flow of water.

In January 2014, a Memorandum of Understanding between the Ministry of Agriculture and the National Association of Agricultural Producers was signed, to correct the alignment of the Rivière Blanche to re-groove its original channel over a length of 5.5 km long, and by harnessing to strengthen this part of the river course weak.