Low water flow


Updated on 06/09/2018
Définition
Sens technique
Minimum stream flow calculated in a given time step during low water periods. For a given year, we will talk about: daily low water flow, low water flow on n consecutive days, monthly low flow - average daily flow in a low-flow month (QMNA). With several years of observation, the statistical processing of series of low flows allows calculating a low- flow frequency. For example, the five-year low water flow (or QMNA 5) is a monthly flow that occurs on average once every five years. The QMNA 5 is the reference low water flow for the implementation of the water policy.
Source
according to the Ministry of the Environment and AFB
Thématiques associées
Review status
Soumis au comité de relecture.