So ( fr. La Saulx , sometimes in the Russian-language literature the spelling “Salt” is given) is a river in northern France , a tributary of the Marne River. The river is 115.4 km long. [one]
| With | |
|---|---|
| fr. Saulx | |
 | |
| Characteristic | |
| Length | 115.4 km |
| Swimming pool | 2100 km² |
| Watercourse | |
| Source | |
| • Coordinates | |
| Mouth | Marna |
| • Coordinates | |
| Location | |
| Water system | Marne → Seine → English Channel → Atlantic Ocean |
| A country |
|
| Region | Grand est |
 - source  - mouth | |
The name of the city Parni-sur-So located on it came from the name of the river.
The tributary is the She river.
Hydrometry
Co belongs to the Seine basin. The river, like most of the rivers flowing from the Barrois plateau, is full of water. The average monthly water discharge was observed for 49 years (from 1957 to 2005) at the station in Vitry en Pertois, which is located near the confluence of So and Marne. The area of the river basin is 2100 km ², water consumption - 25.7 m / ³ sec.
There are seasonal changes in water flow rate from 44 to 52 m³ / s from December to March inclusive (with a maximum in January-February). In the summer from June to October, the flow rate can decrease to 7.34 m³ / s (in August).
The average monthly water discharge (m³ / s) of the Co river. By measuring the hydrological station Vitry-en-Pertois.
Follow-up - 49 years